WO2011038546A1

WO2011038546A1 - Method for sealingly conveying flexible material and feeding machine

Info

Publication number: WO2011038546A1
Application number: PCT/CN2009/074328
Authority: WO
Inventors: 牛斌
Original assignee: Niu Bin
Priority date: 2009-09-29
Filing date: 2009-09-30
Publication date: 2011-04-07
Also published as: CN101670941A

Abstract

A method for sealingly conveying flexible material and a feeding machine are disclosed. The method includes extruding and conveying the material mechanically, heating the material to soften them during the conveying process and further conveying the material compactly by extruding mechanically. The feeding machine includes a conveying cavity (2) provided with a feeding inlet. A main shaft (6) with spiral sheets whose thread pitch is gradually smaller is arranged in the conveying cavity, which is used for extruding and conveying mechanically, and the rear part of the main shaft is extended outside of the conveying cavity for thermal conduction. The method sealingly conveys the flexible material in a simple manner and solves the sealing problem during continuously conveying the material.

Description

Instruction manual

Title of Invention: Flexible material sealing and conveying method and feeding machine Flexible material sealing and conveying method and feeding machine

[1] Technical field

[2] The present invention is a flexible material sealing and conveying method and a feeder.

[3] Background Art

[4] The processing or reaction process of many products needs to be carried out in a sealed state.

Generally, the material is charged into the reactor, the reactor is closed, and then the material in the reactor is processed. After the reactor is opened, the reaction product is led out. As a result, the machining process can only be carried out intermittently.

[5] Summary of the invention

[6] The object of the present invention is to disclose a process and apparatus capable of continuously feeding a homogenous seal to complete continuous production.

[7] The technical solution of the present invention is to carry out extrusion conveying of the material, and in the latter stage, the material is heated to soften and densely conveyed under extrusion. In the process of material transportation, the material is extruded at the same time to make it denser in the rear part of the conveying. This dense state realizes the sealing of the conveying cavity during the conveying process. Since the flexible material will become soft after being heated, it is easier to compact after giving the material a certain amount of heat to make it soft. The extrusion conveying and heating promote each other to enhance the compacting effect of the material, thereby ensuring the sealing of the material to the conveying chamber and achieving sealed conveying.

[8] In order to prevent the entry speed of the material from being slow and the input of the material is insufficient to close the conveying cavity, or to prevent the equipment from stopping, no material input, and the conveying chamber is empty, non-extrusion conveying can be set at the rear of the conveying process. And the material sealing space driven by the material passively. In this way, materials are always retained in the material sealing space. Only after the subsequent materials are transported, can the materials be passively pushed out by the subsequent materials, and the subsequent materials are filled into the sealing space, if this part is continuously realized Permanently sealed to ensure a permanent seal of the delivery chamber.

[9] The conveying process of the present invention can directly adopt the conveying method in which the whole process heating and the mechanical pressing are combined, and the process of mechanically pressing and conveying, followed by heating and mechanical pressing combined transportation. For the latter In the case, in order to prevent the heating from prematurely softening the material and affecting the preliminary extrusion conveyance, the heat conduction may be weakened or blocked between the heating and mechanical pressing combined with the conveying process and the mechanical extrusion conveying process of the preceding stage. The thermal barrier can be achieved by not adding a non-thermally conductive material to the conveying pipe and other parts, or by cooling the rear part.

[10] The heat that heats the material during transport can be provided by an independent heat source or by the material heat transfer.

[11] The extrusion conveying method of the material of the invention can adopt a two-stage screw pushing method with a gradually smaller pitch, and a sealing space is arranged between the two-stage screw pushing.

[12] The apparatus for carrying out the above method of the present invention may specifically adopt the following structure: It comprises a conveying chamber with a feeding port, and a conveying shaft provided with a spiral piece having a pitch with a smaller pitch for pressing and conveying, The rear of the spindle extends out of the delivery chamber for heat transfer. The spindle of the present invention can be heated by a specially arranged heat source. If the temperature in the material reactor is high, the heat in the reactor can be absorbed directly from the main shaft and the conveying chamber which are inserted into the reactor, and transmitted to the conveying process to heat the material during the conveying process.

[13] As the spindle rotates, the spiral advances the material. As the pitch becomes smaller, the material is gradually compacted, especially after the material is softened by heat, and the compaction effect is better. As described in the foregoing method, in order to ensure the sealing effect on the conveying cavity, there should be a section of the material sealing space. For the case where the spiral piece is arranged on the main shaft, the spacing portion forms a sealing space at the rear of the conveying cavity; or a spiral The sheet is continuously disposed on the main shaft to the rear of the main shaft, and there is a sealing space between the rear end of the spiral piece and the rear end of the conveying chamber.

[14] The device of the present invention uses a cooling mechanism disposed at the rear of the conveying chamber to block the heat transferred from the main shaft and the conveying chamber by a certain procedure, and the specific cooling mechanism may be a cooling water jacket disposed on the wall of the conveying chamber. .

[15] The present invention is ingeniously conceived, which utilizes a simple structure to achieve a sealing problem in a continuous conveying process which has not been solved in the past, and enables many continuous production processes that were previously impossible to realize.

Figure 1 is a cross-sectional view of a device according to a sixth embodiment of the present invention;

[17] Among them, 1, motor, 2, conveying cavity, 3, feeding bin, 4, cooling water jacket, 5, spiral, 6, spindle

7, spiral, 8, material sealing space, 9, rack.

[18] Specific implementation

[19] Example 1:

[20] The apparatus of the embodiment comprises a conveying chamber with a feed port, and a reciprocating extrusion with a push plate is arranged in the conveying chamber The conveying mechanism, the working process is that the pushing plate continuously pushes the material to the rear of the conveying cavity, and a heating cavity is arranged on the cavity wall of the rear part of the conveying cavity, so that the material is sealed at the rear of the conveying cavity to keep the outlet of the conveying cavity sealed.

[21] Example 2:

[22] The apparatus of the embodiment comprises a conveying chamber with a feeding port, and a reciprocating pressing conveying mechanism with a pushing plate is arranged in the conveying chamber, and the working process is that the pushing plate continuously pushes the material to the rear of the conveying chamber, and A heating chamber is provided on the wall of the rear section of the conveying chamber to seal the outlet of the conveying chamber while the material is dense at the rear of the conveying chamber. The conveying chamber with the heating chamber is connected to the conveying chamber at the front by a heat insulating material such as ceramic to insulate it.

[23] Example 3:

[24] The apparatus of the embodiment comprises a conveying chamber with a feeding port, and the conveying chamber is provided with a main shaft driven by a motor, and a spiral piece with a smaller pitch is fixed on the main shaft, and the end of the spiral piece is located inside the conveying chamber, so that A sealing space is formed between the end and the end of the delivery chamber. A heating chamber with an inlet and an outlet is provided on the wall at the rear of the delivery chamber. After the equipment is running, the spiral material is squeezed and conveyed during the rotation process, and the material is heated at the rear part, and further squeezed and conveyed to make it dense, and a material seal is formed at the end of the conveying chamber.

[25] Example 4:

[26] The apparatus of the embodiment comprises a conveying chamber with a feeding port, and the conveying chamber is provided with a main shaft driven by a motor, and two spiral segments are fixed on the main shaft, the front portion is a spiral piece with a smaller pitch, and the rear portion is equidistant. A spiral or a spiral with a smaller pitch. There is only a sealing space for the main shaft in the conveying chamber between the two segments. A heating chamber with an inlet and an outlet is provided on the wall at the rear of the delivery chamber. After the equipment is running, the spiral material is squeezed and conveyed during the rotation process, and the material is heated at the rear part, further squeezed and conveyed to make it dense, and a material seal is formed in the middle of the conveying chamber. The material passing through the sealed space is sent out from the conveying cavity by the rear spiral piece

[27] Example 5:

[28] The device of the embodiment comprises a conveying chamber with a feeding port, and the conveying chamber is provided with a main shaft driven by a motor, and two spiral segments are fixed on the main shaft, the front portion is a spiral piece with a smaller pitch, and the rear portion is equidistant. A spiral or a spiral with a smaller pitch. There is only a sealing space for the main shaft in the conveying chamber between the two segments. A heating chamber with an inlet and an outlet is provided on the wall at the rear of the delivery chamber. a conveying chamber corresponding to the front end of the heating chamber And the main shaft is respectively provided with a heat insulating material section which is spaced apart from the front and rear sections. After the equipment is running, the spiral material is squeezed and conveyed during the rotation process, and the material is heated at the rear part, and further squeezed and conveyed to make it dense, and a material seal is formed in the middle of the conveying chamber. The material passing through the sealed space is sent out from the conveying cavity by the rear spiral piece. The insulating material section prevents the heat generated by the heating chamber from being conducted to the front end of the main shaft and the conveying chamber, thereby ensuring that the material is not heated in the front portion of the conveying chamber.

[29] Example 6:

[30] As shown in the figure, the embodiment comprises a frame 9 on which a transport chamber 2 with a feed bin 3 is mounted, and a transport spindle 2 has a spindle driven by a motor 1 fixed to the frame 9. 6. The spindle 6 extends from the rear end of the delivery chamber 2 to the delivery chamber 2. The front and rear sections of the main shaft 6 are fixed with a spiral piece 5, 7, and the front stage spiral piece 5 has a structure in which the pitch is gradually reduced, and the rear stage spiral piece 7 is an equidistant structure. The formation of the two-stage spiral piece seals the space 8 . A cooling water jacket 4 having a water inlet and a water outlet is provided on the outer wall of the front section of the conveying chamber 2. In the present embodiment, the material is fed into the delivery chamber 2 from the feed bin 3, and the spiral piece 5 is driven by the spindle 6 to be squeezed and conveyed, and a material seal is formed at the material sealing space 8, that is, the conveying chamber 2 is kept sealed front and rear. Subsequent materials will form a seal after the material seal is pushed out. The pushed material is sent out of the transfer chamber 2 by the rear stage spiral 7 and fed to the reactor. The main shaft 6 of the present embodiment and the rear portion of the cavity of the transfer chamber 2 are inserted into the reactor, and the heat in the absorption reactor is transferred to the transfer chamber 2, and combined with the screw extrusion conveying mechanism to make the material more compact. The heat is weakened and blocked by the low temperature emitted by the cooling water jacket 4

Claims

Claim

[Claim 1] 1. A flexible material sealing and conveying method, which is characterized in that: the material is mechanically extruded and conveyed, and the material is heated to soften during the conveying process and further densely conveyed under mechanical pressing.

[Claim 2] 2. The flexible material sealing and conveying method according to claim 1, wherein: a material sealing space passively pushed by the material is disposed at a rear portion of the conveying process.

[Claim 3] 3. The flexible material sealing and conveying method according to claim 1 or 2, wherein: the conveying process is first performing mechanical extrusion conveying, then performing heating and mechanical pressing combined conveying; heating and mechanical pressing The heat transfer is weakened or blocked between the press-bonding transport process and the mechanical extrusion process of the preceding section.

[Claim 4] 4. The flexible material sealing and conveying method according to claim 3, wherein the weakening or blocking method of heat conduction is realized by cooling.

[Claim 5] 5. The flexible material sealing and conveying method according to any one of claims 2 to 4, characterized in that the heating during the conveying is carried out by heating of the external heating source or by heat conduction by the reaction of the material.

[Claim 6] 6. The flexible material sealing and conveying method according to any one of claims 2 to 4, wherein: the material mechanical extrusion conveying method uses a two-segment screw driving method with a gradually smaller pitch, A sealing space is provided between the two sections of the screw push.

[Claim 7] 7. A flexible material sealing feeder, characterized in that: it comprises a conveying chamber with a feeding port, and a conveying piece is provided with a spiral piece having a pitch smaller for mechanical extrusion conveying. The main shaft, the rear of the main shaft extends out of the conveying chamber for heat conduction.

[Claim 8] 8. The flexible material sealing feeder according to claim 7, wherein: the spiral piece is continuously disposed on the main shaft to the rear of the main shaft, and the rear end of the spiral piece and the rear end of the conveying cavity are sealed. Space; or the spiral piece is composed of at least two segments along the main axis, and the spacing portion forms a sealing space at the rear of the conveying cavity.

[Claim 9] 9. The flexible material sealing feeder according to claim 6 or 7 or 8, characterized in that

: A cooling mechanism is provided at the rear of the conveying chamber.

[Claim 10] 10. The flexible material sealing feeder according to claim 9, wherein: The cooling mechanism is a cooling water jacket on the wall of the conveying chamber.