Suction gun and suction device

Abstract

The utility model discloses an embodiment of a kind of suction gun and suction device. Suction device includes gun body and gun head. Gun body is provided with material conveying passage and with the suction port of material conveying passage intercommunication. Gun head is sleeved in suction port, the inside wall of gun head is provided with limit step, limit step is used to limit the length of gun body into gun head, gun head is provided with multiple filter holes, multiple filter holes are interconnected with suction port, and gun head is configured as non-metal structure. The suction gun provided by the utility model, on the one hand, avoids the problem that large block material enters into material conveying pipeline and causes the blockage of material conveying pipeline. On the other hand, the efficiency of the alignment assembly of gun head and gun body is improved, and the filter hole of gun body is prevented from being blocked. On the other hand, the problem that gun head and material bag or other hard structure are abraded and cause debris to contaminate material is avoided, and the quality of material is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of material conveying, and in particular to a suction gun and suction device. Background Technology

[0002] Traditionally, the suction gun of a suction device is made of stainless steel or aluminum alloy, and the suction gun has no filter screen to prevent foreign objects. As a result, during frequent unpacking operations, the hard collision or friction between the material bag and other debris and metal parts will generate tiny metal fragments, which increases the risk of material blockage in the suction gun, the cost of subsequent removal of metal foreign objects from the material, and serious safety hazards such as internal short circuits and spontaneous combustion of the battery. Utility Model Content

[0003] The purpose of this utility model is to provide a suction gun and suction device to solve the technical problems of existing suction guns, which use stainless steel or aluminum alloy for the gun head and lack a filter mesh structure to prevent foreign objects from entering the suction gun. This increases the risk of material blockage in the suction gun and the cost of subsequent removal of metal foreign objects from the material, as well as the technical problems of increased serious safety hazards such as internal short circuits and spontaneous combustion of batteries.

[0004] In a first aspect, this utility model provides a suction gun, including a gun body and a gun head. The gun body is provided with a material conveying channel and a suction port communicating with the material conveying channel. The gun head is sleeved on the suction port, and a limiting step is provided on the inner side wall of the gun head to limit the length of the gun body extending into the gun head. The gun head is provided with multiple filter holes, and the multiple filter holes are communicating with the suction port. The gun head is configured as a non-metallic structure.

[0005] In conjunction with the first aspect, in one possible implementation, the gun head includes a connecting end cap and a connecting sleeve. The connecting sleeve is connected to the periphery of the connecting end cap. The inner sidewall of the connecting sleeve is provided with a limiting groove to form the limiting step. The gun body is inserted into the connecting sleeve and supported on the limiting step. The length of the connecting sleeve in the axial direction of the suction gun is greater than the depth of the limiting groove in the axial direction of the suction gun.

[0006] In conjunction with the first aspect, in one possible implementation, the plurality of filter holes include a plurality of first filter holes and / or a plurality of second filter holes, wherein the plurality of first filter holes are disposed on the connecting end cap, and the plurality of second filter holes are disposed on the portion of the connecting sleeve that extends above the gun body in the axial direction of the suction gun.

[0007] In conjunction with the first aspect, in one possible implementation, a plurality of second filter holes are arranged at intervals along the circumferential direction of the suction gun, and the radial area of ​​the second filter holes is equal to the radial area of ​​the first filter holes.

[0008] In conjunction with the first aspect, in one possible implementation, the connecting end cap is smoothly connected to the connecting sleeve, the connecting end cap is configured as an arc-shaped plate, and the connecting end cap bends outward relative to the connecting sleeve toward the side facing away from the gun body.

[0009] In conjunction with the first aspect, in one possible implementation, the outer wall of the connecting sleeve on the side opposite to the connecting end cap is provided with a chamfered surface.

[0010] In conjunction with the first aspect, in one possible implementation, the non-metallic structure is a plastic structure, the plastic structure including a tripropylene structure or a polyvinyl chloride structure, and the gun body is configured as a rigid structure, the rigid structure being a metal structure, the metal structure including a stainless steel structure or a conductive polymer structure.

[0011] In conjunction with the first aspect, in one possible implementation, the suction gun further includes a grounding structure disposed on the side of the gun body away from the suction port.

[0012] In conjunction with the first aspect, in one possible implementation, the gun body is further provided with at least one air replenishment hole, and at least one of the air replenishment holes is used to communicate with the material conveying channel and the air replenishment device.

[0013] Secondly, this utility model provides a material suction device, including a frame and a material suction gun as described above, wherein the material suction gun is mounted on the frame.

[0014] The suction gun and suction device provided by this utility model have several advantages. First, the gun head is equipped with multiple filter holes, which prevents large pieces of material from entering the conveying pipe and causing blockage. Second, the inner wall of the gun head is provided with a limiting step, which limits the length of the gun body extending into the gun head, thereby improving the efficiency of the alignment and assembly of the gun head and the gun body and preventing the gun body from clogging the filter holes. Third, the gun head is configured as a non-metallic structure, which avoids wear between the gun head and the material bag or other hard structures, thus preventing debris from contaminating the material and improving the quality of the material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of a partial structure of the suction device and material bag provided in the first embodiment of this utility model.

[0017] Figure 2 yes Figure 1 A cross-sectional view of a portion of the suction gun in the suction device.

[0018] Figure 3 yes Figure 2 An enlarged view of part I of the suction gun in the image.

[0019] Key component symbols: Material bag - 1a; Bag body - 11a; Bag opening - 12a; Suction device - 1000; Frame - 100; Suction gun - 200; Gun body - 10; Conveying channel - 101; Suction port - 102; Air replenishment hole - 103; Gun head - 20; Limiting step - 201; Filter hole - 202; First filter hole - 2021; Second filter hole - 2022; Limiting groove - 203; Connecting end cap - 21; Connecting sleeve - 22; Chamfered surface - 221; Grounding structure - 30; Axial direction - X; Radial direction - Y; Circumferential direction - Z; Central axis - P.

[0020] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It is understood that the terminology in the specification, claims, and accompanying drawings of this utility model is for describing specific embodiments only and is not intended to limit the utility model. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "described" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this utility model, wherein terms indicating direction such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The following description describes preferred embodiments of this invention; however, the foregoing description is intended to illustrate the general principles of this invention and is not intended to limit the scope of this invention. The scope of protection of this invention shall be determined by the appended claims.

[0025] Please see Figure 1 , Figure 1 This is a cross-sectional view of a partial structure of the suction device 1000 and the material bag 1a provided in the first embodiment of this utility model. The suction device 1000 includes a frame 100 and a suction gun 200. The suction gun 200 is mounted on the frame 100. The suction gun 200 is used to transport the material inside the material bag 1a. Specifically, the suction device 1000 also includes a negative pressure generator (not shown in the figure). The negative pressure generator is connected to the suction gun 200 and is used to drive the suction gun 200 to suck the material inside the material bag 1a from the suction port 102 into the inner cavity of the suction gun 200, and then discharge it from the discharge port to a preset station, thereby realizing the suction of the material bag 1a. The negative pressure generator can be, but is not limited to, a negative pressure fan, an air compressor, a vacuum machine, etc.

[0026] Material bag 1a is used for storing materials. Material bag 1a includes a bag body 11a and a bag opening 12a disposed on the bag body 11a. The shape of the bag body 11a can be cylindrical, cubic, cuboid, etc. The shape of the bag opening 12a can be, but is not limited to, cylindrical, elliptical, square, etc. In some embodiments, material bag 1a also includes a cover. The cover is disposed at a position corresponding to the bag opening 12a and is used to close or open the bag opening 12a. The cover is detachably connected to the bag body 11a, for example, the cover and the bag body 11a can be detachably connected together by a zipper structure, Velcro structure, or other mounting structure. Of course, in some other embodiments, the cover and the bag body 11a can also be integrally formed.

[0027] Understandably, the suction gun 200 can open the bag opening 12a by operating the cover cloth with external force; or, the material bag 1a can open the bag opening 12a by piercing the cover cloth and / or the bag body 11a with a knife. Thus, the suction gun 200 can convey the material inside the material bag 1a after being inserted into the bag opening 12a.

[0028] For example, in this embodiment, the material can be a battery material. Battery materials include a variety of materials, such as, but not limited to, positive electrode materials, negative electrode materials, conductive agents, etc. In this embodiment, the material is illustrated as a battery material. It can be understood that the material can also be other materials, such as food materials, pharmaceutical materials, fertilizer materials, building materials, etc., and the category of the material is not limited here.

[0029] It should be noted that, Figure 1 The purpose of this illustration is merely to depict the arrangement between the frame 100 and the suction gun 200, and is not intended to specifically limit the connection positions, connections, or specific structures of the various components. The figure is only a schematic representation of the structure of the suction device 1000 according to an embodiment of this utility model and does not constitute a specific limitation on the suction device 1000. In other embodiments of this utility model, the suction device 1000 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the suction device 1000 may also include, but is not limited to, a bag-tapping component, a lifting component, etc. The bag-tapping component is used to tap the material bag 1a to shake off the material adhering to the material bag 1a, thereby improving the feeding efficiency and effect of the suction gun 200. The lifting component is used to drive the suction gun 200 or the material bag 1a to move up and down.

[0030] Please refer to the following: Figure 2 and Figure 3 , Figure 2 yes Figure 1 A cross-sectional view of a portion of the suction gun 200 of the suction device 1000; Figure 3 yes Figure 2This is an enlarged view of part I of the suction gun 200. The suction gun 200 includes a gun body 10 and a gun head 20. The gun body 10 is provided with a material conveying channel 101 and a suction port 102 communicating with the material conveying channel 101. The gun head 20 is fitted onto the suction port 102. A limiting step 201 is provided on the inner side wall of the gun head 20. The limiting step 201 is used to limit the length of the gun body 10 extending into the gun head 20. The gun head 20 is provided with multiple filter holes 202. The multiple filter holes 202 are connected to the suction port 102. The gun head 20 is configured as a non-metallic structure.

[0031] The suction gun 200 provided in this embodiment of the utility model has several advantages. First, it has multiple filter holes 202 provided in the gun head 20, which prevents large pieces of material from entering the conveying pipe and causing blockage. Second, it has a limiting step 201 on the inner side wall of the gun head 20, which limits the length of the gun body 10 extending into the gun head 20, thereby improving the efficiency of the alignment and assembly of the gun head 20 and the gun body 10, and preventing the gun body 10 from clogging the filter holes 202. Third, it has a non-metallic structure for the gun head 20, which prevents wear between the gun head 20 and the material bag 1a or other hard structures, thus avoiding the problem of debris contaminating the material and improving the quality of the material.

[0032] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 2 For reference, the term "axial direction X" as used in the embodiments and claims herein refers to the direction parallel to the central axis P of the suction gun 200, where the extension direction of the axis is the up-down direction (where the positive axis direction is up); the term "radial direction Y" refers to the direction perpendicular to the central axis P of the suction gun 200, i.e., along the radial direction of the cross-section of the suction gun 200, where the extension direction of the axis is the left-right direction (where the positive axis direction is right); the term "circumferential direction Z" refers to the circumferential direction of the suction gun 200, i.e., the direction surrounding the central axis P of the suction gun 200, where the extension direction of the axis is the front-back direction (where the positive axis direction is back). The axial direction X, radial direction Y, and circumferential direction Z together constitute the three orthogonal directions of the suction gun 200. For ease of description, the up-down, left-right, and front-back orientations in this utility model are relative positions and do not constitute a limitation on implementation. The length, width, and height directions of the suction gun 200 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings, and this utility model does not impose specific limitations.

[0033] The gun body 10 and the gun head 20 are independently configured and detachably fixedly connected, thereby facilitating the disassembly, replacement, and maintenance of the gun body 10 and the gun head 20. Of course, in some embodiments, the gun head 20 can also be non-detachably fixedly connected to the gun body 10 by means of adhesive bonding or injection molding, etc., and this utility model embodiment does not make specific limitations.

[0034] The nozzle 20 is sealed to the nozzle body 10, thereby preventing material from escaping from the connecting sleeve 22 and the nozzle body 10 in the conveying pipe, and improving the safety of the suction gun 200. Specifically, the nozzle 20 and the nozzle body 10 are interference-fitted.

[0035] In some embodiments, the suction gun 200 further includes a sealing structure. The sealing structure is sealed between the connecting sleeve 22 and the gun body 10, thereby preventing material in the conveying pipe from escaping between the connecting sleeve 22 and the gun body 10, and improving the safety of the suction gun 200 in use.

[0036] For example, in this embodiment, the non-metallic structure is a plastic structure, and the gun body 10 is configured as a rigid structure. Therefore, after the gun head 20 is fitted onto the gun body 10, it can be tightened against the outer wall of the gun body 10, thereby achieving a sealed connection between the gun head 20 and the gun body 10. The plastic structure includes a tripropylene polypropylene structure or a polyvinyl chloride structure. The rigid structure is a metal structure. The metal structure includes a stainless steel structure or a conductive polymer structure. Thus, on the one hand, the gun head 20 is configured as a plastic or rubber structure, giving it good wear resistance and improving its ability to disperse mechanical stress, extending the service life of the material suction device 1000; on the other hand, the gun body 10 is configured as a rigid structure, making it less prone to collapse under negative pressure, maintaining a stable flow rate, and improving material conveying efficiency; furthermore, the gun body 10 is configured as a metal structure, allowing it to conduct electricity naturally, quickly releasing static electricity generated by material friction through grounding, and possessing advantages such as good structural strength, wear resistance, aging resistance, and fire resistance. Specifically, the nozzle 20 is made of tripropylene, and the nozzle body 10 is made of 304 stainless steel. This avoids the generation of foreign objects and metal debris during the material suction process, reduces subsequent processing costs, lowers the risk of battery short circuits, and improves product yield. The radial cross-section of the nozzle body 10 is circular. Of course, the radial cross-section of the nozzle body 10 can also be square, elliptical, triangular, polygonal, etc., and this embodiment of the invention does not impose a specific limitation.

[0037] The gun head 20 includes a connecting end cap 21 and a connecting sleeve 22. The connecting sleeve 22 is connected to the periphery of the connecting end cap 21. The inner sidewall of the connecting sleeve 22 is provided with a limiting groove 203 to form a limiting step 201. The gun body 10 is inserted into the connecting sleeve 22 and rests on the limiting step 201. The length of the connecting sleeve 22 in the axial direction X of the suction gun 200 is greater than the depth of the limiting groove 203 in the axial direction X of the suction gun 200. Therefore, on the one hand, the inner wall of the connecting sleeve 22 is provided with a limiting groove 203 to form a limiting step 201, thereby reducing the processing and manufacturing difficulty of the gun head 20 and reducing production costs; on the other hand, the length of the connecting sleeve 22 in the axial direction X of the suction gun 200 is greater than the depth of the limiting groove 203 in the axial direction X of the suction gun 200, thereby enabling the part of the gun head 20 that protrudes from the gun body 10 to absorb mechanical stress before the gun body 10, reducing the risk of deformation or tearing of the gun body 10 under external force, extending the service life of the suction gun 200, and enabling the part of the gun head 20 that protrudes from the gun body 10 to maintain a flexible state, so that the suction gun 200 may automatically rebound when it stops sucking materials, forming a one-way valve effect and reducing the risk of material backflow.

[0038] In this embodiment, the connecting end cap 21 and the connecting sleeve 22 are connected as an integral structure, thereby improving the overall structural strength and aesthetic appearance of the gun head 20. Specifically, the connecting end cap 21 and the connecting sleeve 22 are integrally formed by one-piece molding, thus eliminating the need for an installation structure. This results in a simple and compact structure and avoids the problem of debris generated by the installation structure rubbing against the material, thereby improving the material conveying quality. Of course, in some embodiments, the connecting end cap 21 and the connecting sleeve 22 can also be fixedly connected together by adhesive, screw, snap-fit, or other methods. This embodiment of the present invention does not impose specific limitations on these methods.

[0039] In this embodiment, the plurality of filter holes 202 includes a plurality of first filter holes 2021 and a plurality of second filter holes 2022. The plurality of first filter holes 2021 are disposed on the connecting end cap 21. The plurality of second filter holes 2022 are disposed on the portion of the connecting sleeve 22 that extends above the gun body 10 in the axial direction X of the suction gun 200. Therefore, by providing filter holes 202 on the portions of the connecting end cap 21 and the connecting sleeve 22 that extend above the gun body 10, the flow area of ​​the suction gun 200 is increased, and the suction gun 200 can be fed from different spatial dimensions, thereby dispersing the suction force and avoiding the problem of material accumulation or fiber entanglement leading to blockage that can easily occur when only the gun head 20 is provided with first filter holes 2021 or second filter holes 2022. This improves the reliability of continuous operation and increases the material conveying efficiency. Of course, in some other embodiments, the plurality of filter holes 202 may also include only a plurality of first filter holes 2021 or a plurality of second filter holes 2022; this embodiment of the present invention does not impose a specific limitation.

[0040] In some embodiments, a plurality of second filter holes 2022 are arranged at Z-intervals along the circumferential direction of the suction gun 200. The radial area of ​​the second filter holes 2022 is equal to the radial area of ​​the first filter holes 2021. Thus, on the one hand, the arrangement of the plurality of second filter holes 2022 at Z-intervals along the circumferential direction of the suction gun 200 improves the uniformity of material conveying in the conveying channel 101, reduces the probability of blockage, and increases conveying efficiency; on the other hand, the equal radial area of ​​the second filter holes 2022 facilitates the processing and shaping of the filter holes 202, ensures uniform suction distribution, avoids excessive suction on one side leading to material splashing or insufficient suction, and makes the airflow more balanced, reducing material accumulation or wall adhesion, thereby making the suction gun 200 more stable during the material suction process. Of course, in some embodiments, the radial area of ​​the first filter hole 2021 may be smaller or larger than the radial area of ​​the second filter hole 2022, and the areas of the multiple first filter holes 2021 may be the same or different, and the areas of the multiple second filter holes 2022 may also be the same or different. This embodiment of the present invention does not impose specific limitations. In this embodiment, the radial areas of the multiple first filter holes 2021 are all the same, and the radial areas of the multiple second filter holes 2022 are also the same.

[0041] In this embodiment, the connecting end cap 21 and the connecting sleeve 22 are smoothly connected. The connecting end cap 21 is configured as an arc-shaped plate, and it bends outward relative to the connecting sleeve 22 towards the side facing away from the gun body 10. Therefore, based on the arc-shaped configuration of the connecting end cap 21, on the one hand, the connecting end cap 21 can disperse the negative pressure concentration point, reducing the risk of air intake due to excessive local negative pressure, lowering the probability of material blockage, improving material conveying efficiency, and enhancing the structural strength of the connecting end cap 21; on the other hand, the smooth edge of the arc-shaped plate is less likely to scratch the material bag 1a, reducing the risk of debris contaminating the material due to wear between the gun head 20 and the material bag 1a or other hard structures, thus improving material quality. Of course, in some embodiments, the connecting end cap 21 can also be configured as a hemispherical structure. Specifically, the surface of the connecting end cap 21 facing away from the gun body 10 relative to the connecting sleeve 22 is configured as an arc-shaped surface. In other embodiments, the connecting end cap 21 can also be configured as a flat plate structure; this embodiment of the present invention does not impose specific limitations.

[0042] In some embodiments, the outer wall of the connecting sleeve 22 facing away from the connecting end cap 21 is provided with a chamfered surface 221. Thus, on the one hand, the chamfered surface 221 can prevent material accumulation at the connection corner between the gun head 20 and the gun body 10; on the other hand, it can prevent the right angle of the gun head 20 from colliding or abrading with the material bag 1a or other rigid structures, thus preventing the generation of debris and improving the quality of the material.

[0043] Of course, in some embodiments, a protective structure is provided on the side of the connecting sleeve 22 away from the connecting end cap 21. The protective structure can be a hemispherical structure. The protective structure can be configured as an elastic structure. The elastic structure can include, but is not limited to, plastic structures, rubber structures, etc.

[0044] In some embodiments, the suction gun 200 further includes a grounding structure 30. The grounding structure 30 is disposed on the side of the gun body 10 away from the suction port 102. Thus, on the one hand, the grounding structure 30 can accelerate the flow rate of the material in the conveying pipe and release the static electricity generated when the material flows at high speed, thereby improving the material conveying efficiency and conveying safety. On the other hand, the grounding structure 30 being disposed on the side of the gun body 10 away from the suction port 102 can shorten the static electricity release path, quickly conduct away the charge, reduce the risk of sparks or explosions caused by static electricity accumulation, improve the material suction safety and reliability of the suction gun 200, and prevent the risk of the grounding structure 30 rubbing against the material bag 1a.

[0045] In some embodiments, the gun body 10 is further provided with at least one air replenishment hole 103, which is used to communicate with the conveying channel 101 and the air replenishment device. Thus, the air replenishment device replenishes air into the conveying channel 101 through the air replenishment hole 103, thereby accelerating the flow of material within the conveying channel 101, preventing material blockage, and improving the material conveying effect and efficiency. Exemplarily, in this embodiment, two air replenishment holes 103 are provided, spaced apart along the axial direction X of the gun body 10, thereby adjusting the pressure in different areas of the conveying pipe and improving the material conveying effect and efficiency. The extending direction of the air replenishment hole 103 is parallel to the radial direction Y of the gun body 10. Alternatively, the extending direction of the air replenishment hole 103 is inclined relative to the radial direction Y of the gun body 10, and the air outlet direction of the air replenishment hole 103 faces the material conveying direction, thereby assisting the material flow within the conveying channel 101 and improving the material conveying effect and efficiency. It should be noted that the number and location of the air inlet 103 can be set according to the actual situation, and this embodiment of the utility model does not impose specific limitations.

[0046] In some embodiments, an air supply pipe (not shown) may also be provided on the outer wall of the gun body 10. An air pressure balance channel is formed between the air supply pipe and the gun body 10. The air pressure balance channel and the material conveying channel 101 are separated in the radial direction Y of the suction gun 200. One end of the air pressure balance channel is connected to an air supply device, and the other end is connected to the inner cavity of the material bag 1a. Thus, the air supply device provides positive pressure gas through the air supply channel, blowing it towards the bag opening 12a of the material bag 1a, thereby blowing up the material inside the material bag 1a and assisting the material inside the material bag 1a to enter the suction port 102, preventing material accumulation at the suction port 102, and improving the material conveying effect and efficiency. Furthermore, it keeps the pressure inside the material bag 1a balanced, facilitating the smooth operation of the suction gun 200.

[0047] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A suction gun (200), characterized in that, include: Gun body (10), the gun body (10) is provided with a material conveying channel (101) and a suction port (102) connected to the material conveying channel (101). The gun head (20) is sleeved on the suction port (102). The inner sidewall of the gun head (20) is provided with a limiting step (201). The limiting step (201) is used to limit the length of the gun body (10) extending into the gun head (20). The gun head (20) is provided with a plurality of filter holes (202). The plurality of filter holes (202) are connected to the suction port (102). The gun head (20) is configured as a non-metallic structure.

2. The suction gun (200) as described in claim 1, characterized in that, The gun head (20) includes a connecting end cap (21) and a connecting sleeve (22). The connecting sleeve (22) is connected to the periphery of the connecting end cap (21). The inner sidewall of the connecting sleeve (22) is provided with a limiting groove (203) to form the limiting step (201). The gun body (10) is inserted into the connecting sleeve (22) and supported on the limiting step (201). The length of the connecting sleeve (22) in the axial direction (X) of the suction gun (200) is greater than the depth of the limiting groove (203) in the axial direction (X) of the suction gun (200).

3. The suction gun (200) as described in claim 2, characterized in that, The plurality of filter holes (202) include a plurality of first filter holes (2021) and / or a plurality of second filter holes (2022). The plurality of first filter holes (2021) are disposed on the connecting end cap (21), and the plurality of second filter holes (2022) are disposed on the portion of the connecting sleeve (22) that extends above the gun body (10) in the axial direction (X) of the suction gun (200).

4. The suction gun (200) as described in claim 3, characterized in that, Multiple second filter holes (2022) are arranged at intervals along the circumferential direction (Z) of the suction gun (200), and the radial area of ​​the second filter hole (2022) is equal to the radial area of ​​the first filter hole (2021).

5. The suction gun (200) as described in claim 2, characterized in that, The connecting end cap (21) is smoothly connected to the connecting sleeve (22). The connecting end cap (21) is configured as an arc plate. The connecting end cap (21) bends outward relative to the connecting sleeve (22) towards the side away from the gun body (10).

6. The suction gun (200) as described in claim 2, characterized in that, The outer wall of the connecting sleeve (22) facing away from the connecting end cap (21) is provided with a chamfered surface (221).

7. The suction gun (200) as described in any one of claims 1-6, characterized in that, The non-metallic structure is a plastic structure, and the gun body (10) is configured as a rigid structure, which is a metal structure.

8. The suction gun (200) as described in any one of claims 1-6, characterized in that, The suction gun (200) also includes a grounding structure (30), which is located on the side of the gun body (10) away from the suction port (102).

9. The suction gun (200) as described in any one of claims 1-6, characterized in that, The gun body (10) is also provided with at least one air replenishment hole (103), and at least one of the air replenishment holes (103) is used to communicate with the material conveying channel (101) and the air replenishment device.

10. A material suction device (1000), characterized in that, It includes a frame (100) and a suction gun (200) as described in any one of claims 1-9, the suction gun (200) being mounted on the frame (100).

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