Improved push gun head structure of PTFE air purification film extruder

Abstract

The utility model discloses an improved push gun head structure of a PTFE (Polytetrafluoroethylene) air purification film extruder, which belongs to the technical field of air purification film extruders and comprises a push shaft, a push head and a buffer head, the push head is detachably connected onto the push shaft, and the buffer head is elastically connected onto the push head. According to the utility model, the spring is additionally arranged between the pushing head and the buffering head, so that the pushing gun head can stretch out and draw back to a certain extent under the action of external force, and the generation of internal negative pressure can be reduced or avoided when the pushing gun head is pulled out; when the push gun head is pushed back to the original position, the elastic force of the spring can help the push gun head to be tightly attached to the internal structure of the extruder, and material leakage is prevented; and meanwhile, the elasticity of the spring can also play a buffering role, so that the impact and abrasion to the internal structure of the extruder in the pulling-out and pushing-in processes of the push gun head are reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of air purification film extruders, in particular to an improved push gun head structure of a PTFE air purification film extruder. Background Art

[0002] PTFE extruder is a kind of equipment used to produce polytetrafluoroethylene (PTFE) products. Its working principle generally includes the steps of feeding, heating, compression and extrusion. During the extrusion process, the PTFE material is heated to a molten state and enters the die head through the pushing action of the screw, and finally extruded into shape.

[0003] The push gun head (or push rod) is a key component in the extruder, used to push the molten PTFE material from the screw to the die. However, when the push gun head is pulled out for maintenance or replacement, due to the high temperature and high pressure environment inside the extruder and the viscosity of the material itself, a negative pressure effect may be generated, causing part of the molten material to be sucked out of the die or the extruder, which will not only cause material waste, but also may affect the normal operation of the equipment and the quality of the product. Utility Model Content

[0004] The purpose of the utility model is to propose an improved push gun head structure for a PTFE air purification membrane extruder in order to solve the problem that when the existing push gun head is pulled out for maintenance or replacement, a negative pressure effect may be generated due to the high temperature and high pressure environment inside the extruder and the viscosity of the material itself, resulting in part of the molten material being sucked out of the die head or the inside of the extruder, which not only causes material waste but also may affect the normal operation of the equipment and the quality of the product.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an improved push gun head structure of a PTFE air purification membrane extruder, comprising a push shaft, a push head and a buffer head, wherein the push head is detachably connected to the push shaft, and the buffer head is elastically connected to the push head.

[0006] As a further description of the above technical solution:

[0007] A thread groove is arranged in the pushing shaft, and a stud is arranged at one end of the pushing head, and the stud is screwed in the thread groove.

[0008] As a further description of the above technical solution:

[0009] A plurality of springs are arranged at the other end of the pusher head, a connector is arranged on the buffer head, and the springs pass through the connector and are connected to the buffer head.

[0010] As a further description of the above technical solution:

[0011] The outer side wall of the other end of the push head is provided with an external thread, and the connecting body is provided with a connecting groove, and the connecting groove is connected to the external thread.

[0012] As a further description of the above technical solution:

[0013] The diameter of the buffer head facing the connecting body matches that of the connecting body.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] 1. In the utility model, a spring is added between the push head and the buffer head. The addition of the spring enables the push gun head to expand and contract to a certain extent when subjected to external force, thereby reducing or avoiding the generation of internal negative pressure when the push gun head is pulled out; when the push gun head is pushed back to its original position, the elastic force of the spring can help the push gun head to fit closely to the internal structure of the extruder to prevent material leakage; at the same time, the elasticity of the spring can also play a buffering role, reducing the impact and wear of the push gun head on the internal structure of the extruder during the pulling out and pushing in process, thereby extending the service life of the equipment.

[0016] 2. In the utility model, the push shaft, the push head and the buffer head can be disassembled from each other, which is convenient for maintenance and replacement, thereby improving the maintenance and replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Decomposition of the improved push gun head structure of a PTFE air purification membrane extruder Figure 1 .

[0019] Figure 2 Decomposition of the improved push gun head structure of a PTFE air purification membrane extruder Figure 2 .

[0020] Figure 3 Decomposition of the improved push gun head structure of a PTFE air purification membrane extruder Figure 3 .

[0021] Legend:

[0022] 1-push shaft; 2-push head; 3-buffer head; 4-thread groove; 5-stud; 6-spring; 7-connector; 8-external thread; 9-connection groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-3The utility model provides a technical solution: an improved push gun head structure of a PTFE air purification membrane extruder, comprising a push shaft 1, a push head 2 and a buffer head 3, wherein the push head 2 is detachably connected to the push shaft 1, and the buffer head 3 is elastically connected to the push head 2.

[0030] The pushing shaft 1 is provided with a thread groove 4, and one end of the pushing head 2 is provided with a stud 5, which is screwed into the thread groove 4, so as to facilitate disassembly and replacement.

[0031] A plurality of springs 6 are provided at the other end of the push head 2, and a connector 7 is provided on the buffer head 3, through which the spring 6 is connected to the buffer head 3. The addition of the spring enables the push gun head to expand and contract to a certain extent when subjected to external force, thereby reducing or avoiding the generation of internal negative pressure when the push gun head is pulled out.

[0032] The outer side wall of the other end of the pusher head 2 is provided with an external thread 8, and the connecting body 7 is provided with a connecting groove 9, and the connecting groove 9 is connected to the external thread 8. It can be easily disassembled and replaced.

[0033] The caliber of the buffer head 3 facing the connector 7 matches the connector 7. When the push gun head is pushed back to its original position, the elastic force of the spring can help the push gun head to fit closely to the internal structure of the extruder to prevent material leakage.

[0034] Working principle: By adding a spring between the push head and the buffer head, the addition of the spring allows the push gun head to expand and contract to a certain extent when subjected to external force, thereby reducing or avoiding the generation of internal negative pressure when the push gun head is pulled out; when the push gun head is pushed back to its original position, the elastic force of the spring can help the push gun head fit closely to the internal structure of the extruder to prevent material leakage; at the same time, the elasticity of the spring can also play a buffering role, reducing the impact and wear of the push gun head on the internal structure of the extruder during the pulling out and pushing in process, thereby extending the service life of the equipment.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved push gun head structure of a PTFE air purification membrane extruder, characterized in that: It includes a pushing shaft, a pushing head and a buffer head. The pushing head is detachably connected to the pushing shaft, and the buffer head is elastically connected to the pushing head. A threaded groove is arranged in the pushing shaft, and a stud is arranged at one end of the pushing head, and the stud is screwed in the threaded groove. A plurality of springs are arranged at the other end of the pushing head, and a connecting body is arranged on the buffer head, and the spring passes through the connecting body and is connected to the buffer head.

2. The improved push gun head structure of a PTFE air purification membrane extruder according to claim 1 is characterized in that: The outer side wall of the other end of the push head is provided with an external thread, and the connecting body is provided with a connecting groove, and the connecting groove is connected to the external thread.

3. The improved push gun head structure of a PTFE air purification membrane extruder according to claim 2 is characterized in that: The diameter of the buffer head facing the connecting body matches that of the connecting body.

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