CN212575703U

CN212575703U - Powder feeding and foreign matter preventing filtering device

Info

Publication number: CN212575703U
Application number: CN202020056224.5U
Authority: CN
Inventors: 廖少平; 谭克脑; 张丽丽
Original assignee: Dongguan Xinchen New Material Technology Co ltd
Current assignee: Dongguan Xinchen New Material Technology Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2021-02-23
Anticipated expiration: 2030-01-10

Abstract

The utility model relates to the technical field of extrusion granulation feeding filtration, in particular to a powder feeding foreign matter prevention filtration device, which comprises a filtration bin, wherein the filtration bin comprises an upper bin body, a first filtration bin body, a transition bin body, a second filtration bin body and a lower bin body which are sequentially communicated from top to bottom, the structures of the first filtration bin body and the second filtration bin body are the same, an upper filter screen and a lower filter screen are respectively arranged in the bins of the first filtration bin body and the second filtration bin body, the upper filter screen and the lower filter screen can be respectively detachably arranged in the respective first filtration bin body and the second filtration bin body through a quick-release mechanism, a quick-release groove is arranged on the outer side of the first filtration bin body, a cavity for installing the quick-release mechanism is arranged on the inner wall of the first filtration bin body, a locking block capable of pulling is arranged in the quick-release groove, the locking block is used for pressing the quick-release mechanism in, but this practicality quick assembly disassembly is convenient for maintain in addition.

Description

Powder feeding and foreign matter preventing filtering device

Technical Field

The utility model relates to an extrude the granulation and throw material filtration technical field, concretely relates to powder is thrown material and is prevented foreign matter filter equipment.

Background

In the extrusion granulation process, raw materials need to be fed at fixed points, and the quality requirements of many raw materials are high, so that when the raw materials are fed, the raw materials need to be filtered, and impurities such as dust particles and the like in the raw materials need to be subjected to rough filtration and fine filtration, so as to ensure that the precision of the raw materials which need to be fed for processing and use at the later stage is high and the impurities are few; thereby improving the product quality; the input of raw materials is great, and consequently wherein the proportion of the impurity that needs to filter is also great, and current filter screen will take place blocking phenomenon after using a period, needs the manual work to come manual clearance, and trouble very influences the ageing, and the process of dismouting filter screen is also time-consuming and energy-consuming comparatively.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a powder is thrown material and is prevented foreign matter filter equipment.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a powder feeding and foreign matter preventing filtering device, which comprises a filtering bin, wherein the upper end and the lower end of the filtering bin are both in an open structure, the filtering bin comprises an upper bin body, a first filtering bin body, a transition bin body, a second filtering bin body and a lower bin body which are sequentially communicated from top to bottom, the first filtering bin body and the second filtering bin body are in the same structure, an upper filtering screen and a lower filtering screen are respectively arranged in the two bin bodies, the filtering aperture of the upper filtering screen is larger than that of the lower filtering screen, the upper filtering screen and the lower filtering screen are respectively detachably arranged in the respective first filtering bin body and the second filtering bin body through a quick-release mechanism, the outer side of the first filtering bin body is provided with a quick-release groove, the quick-release groove is communicated with the inner part of the first filtering bin body, the inner wall of the first filtering bin body is provided with a cavity for, the quick release groove is internally provided with a locking block capable of being pulled, the locking block is used for press-mounting the quick release mechanism in the cavity, and when the locking block press-mounts the quick release mechanism in the cavity, the locking block can be detachably connected with the first filtering bin body.

Further, quick detach mechanism includes the rectangle frame, rectangle frame and die cavity phase-match, go up the setting that the filter screen can the horizontal movement in the rectangle frame, one side of filter screen through a plurality of shell fragments that reset with the inside casing lateral wall elastic connection of rectangle frame to the opposite side of filter screen is equipped with the translation cam, the surface of translation cam can with the lateral surface of filter screen short-time contact, the side of translation cam is equipped with the pneumatic motor who is connected with its transmission, works as the pneumatic motor drive when the translation cam rotates around self axis, this translation cam can be inconsistent with the lateral surface of filter screen, and forces the filter screen is towards shell fragment direction horizontal motion, works as the rectangle frame is located when the die cavity, the locking piece can be in close contact with the lateral surface of rectangle frame towards a side of rectangle frame.

Furthermore, two opposite side surfaces of the rectangular frame are respectively provided with a guide slider, one guide slider can be opposite to and contacted with the locking block, the guide slider is provided with a vertical groove, the outer side of the rectangular frame is provided with a slider vertically and movably matched with the vertical groove, a rotating shaft is arranged below the rectangular frame, the rotating shaft is symmetrically sleeved with two lifting cams, the two lifting cams respectively correspond to one side of the rectangular frame and can be temporarily contacted with the bottom surface of the rectangular frame respectively, one end of the rotating shaft is provided with a rotating motor, a main shaft of the rotating motor is in transmission connection with the rotating shaft, when the lifting cams are driven by the rotating motor to rotate around the axis of the lifting cams, the lifting cams can abut against the rectangular frame and force the rectangular frame to vertically move, and a gap for vertical movement of the lifting cams is reserved between the upper surface of the cavity and the upper surface of the rectangular frame, one side of the guide sliding block, which is far away from the vertical groove, is provided with a first wear-resistant rubber layer in an attached mode, and one side, facing the rectangular frame, of the locking block is provided with a second wear-resistant rubber layer.

Furthermore, the open specifications of the upper bin body and the filtering bin body are both smaller than the filtering areas of the upper filtering net and the lower filtering net.

Furthermore, in the inner wall of the first filtering bin body, except the inner wall in the cavity, the rest inner walls are flush with the inner walls of the upper bin body and the transition bin body.

Further, the cavity and the first filtering bin body are integrally formed.

Furthermore, one end of the locking block is always positioned outside the quick-release groove, and the other end of the locking block is a pulling end of the locking block, and the pulling end can be connected with the outside of the first filtering cabin body through a bolt.

The utility model has the advantages that: the materials enter from the opening of the upper bin body, vertically fall onto the upper filter screen, are subjected to rough filtration through the upper filter screen, fall into the transition bin body, are subjected to transition through the transition bin body, fall onto the lower filter screen, and are subjected to fine filtration through the lower filter screen; the impurities in the materials are more, so that the filter screen is prevented from being blocked in a certain time of use, and the falling of the materials is prevented from being influenced; the translation cam is driven by the pneumatic motor to rotate and is matched with the elastic sheet so as to enable the filter screen to horizontally move left and right, and translation vibration is formed; in addition, the anti-blocking effect is enhanced, the lifting cam is driven to rotate by the rotating motor, and the lifting cam falls down by matching with the gravity of the rectangular frame, so that the up-and-down movement of the rectangular frame is realized, namely the filter screen is driven to synchronously generate, namely the filter screen generates the synchronous movement of translation and lifting at the moment, and the amplitude and the frequency of the filtered impurities are increased; the filter screen is ensured not to be cleaned and maintained within a certain time, and the blockage phenomenon is avoided; when the filter screen needs to be maintained, the bolt connected between the locking block and the bin body is removed, then the locking block is pulled to be in close contact with the guide sliding block, and when the guide sliding block is not tightly pressed, the rectangular frame can be drawn out of the cavity and separated from the cavity through the quick-release groove; when the guide slide block is limited, the rectangular frame can only move vertically, and can not move horizontally, so that a stable condition is formed; the utility model discloses can effectively solve the problem that the filter screen can take place to block up in the short time, in addition the utility model discloses but quick assembly disassembly is convenient for maintain.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a first schematic plan view of the present invention;

fig. 3 is a schematic view of a three-dimensional splitting structure of the present invention;

fig. 4 is a second schematic plan view of the present invention;

fig. 5 is a third schematic plan view of the present invention;

fig. 6 is a schematic view of a three-dimensional splitting structure of the present invention;

fig. 7 is a third schematic view of the three-dimensional splitting structure of the present invention;

fig. 8 is a fourth schematic view of the three-dimensional splitting structure of the present invention;

in the figure: an upper bin body 1, a first filtering bin body 111, a quick-release groove 112, a cavity 113, a transition bin body 114, a second filtering bin body 115 and a lower bin body 116.

An upper filter screen 2 and a lower filter screen 3.

The rectangular frame 4, the reset spring piece 411, the translation cam 412, the pneumatic motor 413 and the guide slider 414.

A rotating shaft 5, a lifting cam 511 and a rotating motor 512.

And a bolt 6.

The locking block 7.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the powder feeding and foreign matter preventing filter device comprises a filter bin, wherein the upper end and the lower end of the filter bin are both in an open structure, the filter bin comprises an upper bin body 1, a first filter bin body 111, a transition bin body 114, a second filter bin body 115 and a lower bin body 116 which are sequentially communicated from top to bottom, the first filter bin body 111 and the second filter bin body 115 have the same structure, an upper filter screen 2 and a lower filter screen 3 are respectively arranged in the bins of the first filter bin body and the second filter bin body, the filter aperture of the upper filter screen 2 is larger than that of the lower filter screen 3, the upper filter screen 2 and the lower filter screen 3 are respectively detachably mounted in the respective first filter bin body 111 and the second filter bin body 115 through a quick release mechanism, a quick release groove 112 is formed in the outer side of the first filter bin body 111, the quick release groove 112 is communicated with the interior of the first filter bin body 111, the inner wall of the first filtering cabin 111 is provided with a cavity 113 for installing a quick release mechanism, a locking block 7 capable of being pulled and pulled is arranged in the quick release groove 112, the locking block 7 is used for press-mounting the quick release mechanism in the cavity 113, and when the locking block 7 press-mounts the quick release mechanism in the cavity 113, the locking block 7 can be detachably connected with the first filtering cabin 111.

The quick-release mechanism comprises a rectangular frame 4, the rectangular frame 4 is matched with a cavity 113, the upper filter screen 2 can be horizontally arranged in the rectangular frame 4, one side of the filter screen is elastically connected with the side wall of the inner frame of the rectangular frame 4 through a plurality of reset spring pieces 411, a translation cam 412 is arranged on the other side of the filter screen, the outer surface of the translation cam 412 can be temporarily contacted with the outer side surface of the filter screen, a pneumatic motor 413 in transmission connection with the translation cam 412 is arranged on the side of the translation cam 412, when the pneumatic motor 413 drives the translation cam 412 to rotate around the axis of the pneumatic motor, the translation cam 412 can be abutted against the outer side surface of the filter screen and forces the filter screen to horizontally move towards the direction of the spring pieces, when the rectangular frame 4 is positioned in the cavity 113, one side surface of the locking block 7 facing the rectangular frame 4 can be tightly contacted with the outer side surface of, since the installation, movement structure and state of the upper filter screen 2 and the lower filter screen 3 are the same, there is only a difference in filter aperture, and therefore the following description does not specifically explain the difference between the upper filter screen 3 and the lower filter screen 3; when the pneumatic motor 413 drives the translation cam 412 to rotate around the axis of the translation cam 412, the translation cam 412 can be abutted against the outer side face of the filter screen and force the filter screen to face the elastic piece direction, extrude the elastic piece and horizontally move, and in the state, the filter screen generates translation vibration and forces materials on the filter surface of the filter screen to vibrate, so that an anti-blocking effect is formed; in addition, when the translation cam 412 rotates to be separated from the contact with the side of the filter screen, the filter screen is reset by the elastic force of the reset spring piece 411, so as to realize the contact with the translation cam 412 again.

Two opposite side surfaces of the rectangular frame 4 are respectively provided with a guide slider 414, one guide slider 414 can be opposite to and contact with the locking block 7, a vertical groove is formed in the guide slider 414, a slider vertically and movably matched with the vertical groove is arranged on the outer side of the rectangular frame 4, a rotating shaft 5 is arranged below the rectangular frame 4, two lifting cams 511 are symmetrically sleeved on the rotating shaft 5, the two lifting cams 511 respectively correspond to one side of the rectangular frame 4 and can be temporarily contacted with the bottom surface of the rectangular frame 4 respectively, one end of the rotating shaft 5 is provided with a rotating motor 512, a main shaft of the rotating motor 512 is in transmission connection with the rotating shaft 5, when the lifting cams 511 are driven by the rotating motor 512 to rotate around the axis of the lifting cams 511, the lifting cams 511 can abut against the rectangular frame 4 and force the rectangular frame to vertically move, a gap for vertical movement of the upper surface of the cavity 113 and the upper surface of the rectangular frame 4 is reserved, a first wear-resistant rubber layer is attached to one side, away from the vertical groove, of the guide sliding block 414, a second wear-resistant rubber layer is arranged on one side, facing the rectangular frame 4, of the locking block 7, and the rectangular frame 4 is arranged to be capable of vertically moving in a small range in order to reinforce the anti-blocking effect; the process is as follows: when the rotating motor 512 drives the lifting cam 511 to rotate around the axis of the lifting cam 511, the lifting cam 511 can abut against the rectangular frame 4 and force the rectangular frame to perform vertical movement, and the vertical movement process is performed by taking the guide slide block 414 as a guide foundation; in addition, when the lifting cam 511 rotates to be separated from and contacted with the bottom surface of the rectangular frame 4, the rectangular frame 4 falls down by gravity, namely, is reset, so as to realize the contact with the lifting cam 511 again; thereby forming repeated short-amplitude rapid lifting; therefore, in the translation process of the filter screen, the filter screen can be synchronously lifted through the lifting of the rectangular frame 4, and in the process, the material shaking frequency and amplitude on the filter screen are greatly increased, so that the anti-blocking effect is enhanced; in addition, in order to ensure the stability of the rectangular frame 4 in the cavity 113, the structure is formed by tightly contacting the second wear-resistant rubber layer on the locking block 7 with the first wear-resistant rubber layer on the guide sliding block 414; after the rectangular frame 4 is placed in the cavity 113, the rectangular frame 4 is extruded, so that one guide sliding block 414 far away from the locking block 7 is in close contact with the inner wall of the cavity 113 by virtue of the first wear-resistant rubber layer, then the locking block 7 is pulled, so that the locking block 7 is translated in the dismounting groove, and in the translation process, the first wear-resistant rubber layer and the second wear-resistant rubber layer on the other locking block 7 are in continuous contact, namely the locking block 7 is enabled to press-fit the two guide sliding blocks 414; when the guide block 414 is defined, the rectangular frame 4 can only move vertically without any translation, thus constituting a stable condition.

The open specifications of the upper bin body 1 and the filtering bin body are smaller than the filtering areas of the upper filtering net 2 and the lower filtering net 3, and the open specifications are smaller than the filtering areas of the upper filtering net 2 and the lower filtering net 3, so that the materials falling from the upper bin body 1 cannot fall to the peripheral edge of the upper filtering net 2; the materials falling from the upper filter screen 2 cannot fall to the peripheral edge of the lower filter screen 3; thus preventing the materials from being clamped in the gap between the filter screen and the rectangular frame 4; however, in order to ensure absolute safety, a flexible frame can be additionally arranged on the filtering area of the filter screen, and the flexible frame and the inner wall of the cavity 113 can form a protective edge when forming extrusion (because the filter screen also moves vertically); when the materials on the filter screen are piled up too much, the filter screen also needs to be disassembled for cleaning, so that the worry that the materials are overflowed the protective edge is avoided, the flexible frame is always positioned in the cavity 113, and the specification is larger than the open specifications of the upper bin body 1 and the filtering bin body.

In the inner wall of the first filtering bin body 111, except the inner wall in the cavity 113, other inner walls are flush with the inner walls of the upper bin body 1 and the transition bin body 114, and the inner wall of the first filtering bin is flush with the inner walls of the upper bin body 1 and the transition bin body 114, namely, a larger avoiding area is formed between the inner wall of the first filtering bin and the edge of the filter screen, so that the material is further ensured not to fall between the rectangular frame 4 and the filter screen.

The cavity 113 and the first filtering bin 111 are integrally formed.

One end of the locking block 7 is always positioned outside the quick-release groove 112, and the other end is a drawing end of the locking block 7, the drawing end can be connected with the outside of the first filtering cabin 111 through a bolt 6, and after the locking block 7 is drawn in place, the guide sliding block 414 can be fixed by the bolt 6 after being pressed and installed, so that the self-displacement is prevented.

The working principle is as follows: materials enter from the opening of the upper bin body 1, vertically fall onto the upper filter screen 2, are subjected to rough filtration through the upper filter screen 2, fall into the transition bin body 114, are subjected to transition through the transition bin body 114, fall onto the lower filter screen 3, and are subjected to fine filtration through the lower filter screen 3; the impurities in the materials are more, so that the filter screen is prevented from being blocked in a certain time of use, and the falling of the materials is prevented from being influenced; the translation cam 412 is driven by the pneumatic motor 413 to rotate and be matched with the elastic sheet so as to enable the filter screen to move horizontally left and right, and translation vibration is formed; in addition, the anti-blocking effect is enhanced, the lifting cam 511 is driven to rotate by the rotating motor 512, and the lifting cam is matched with the gravity of the rectangular frame 4 to fall down, so that the up-and-down movement of the rectangular frame 4 is realized, namely the filter screen is driven to synchronously generate, namely the filter screen generates the synchronous movement of translation and lifting at the moment, and the amplitude and the frequency of the filtered impurities are further increased; the filter screen is ensured not to be cleaned and maintained within a certain time, and the blockage phenomenon is avoided; when the filter screen needs to be maintained, the bolt 6 connected between the locking block 7 and the bin body is removed, and then pulls the locking block 7 to stop its close contact with the guide block 414, at which time, the guide block 414 is not pressed tightly, the rectangular frame 4 can be drawn out of the cavity 113 and separated from the cavity 113 through the quick release groove 112, and then, cleaning the filter screen on the rectangular frame 4, after cleaning, firstly loading the rectangular frame 4 into the die cavity 113, and presses the rectangular frame 4, so that one guide block 414 far away from the locking block 7 is tightly contacted with the inner wall of the cavity 113 by means of the first wear-resistant rubber layer, then the locking block 7 is pulled and pulled, so that the locking block 7 is translated in the dismounting groove, the first wear-resistant rubber layer and the second wear-resistant rubber layer on the other locking block 7 are in continuous contact, so that the locking block 7 presses the two guide sliding blocks 414; when the guide block 414 is defined, the rectangular frame 4 can only move vertically without any translation, thus constituting a stable condition.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. The powder feeding and foreign matter preventing filtering device comprises a filtering bin, wherein the upper end and the lower end of the filtering bin are both of an open structure, and the filtering bin is characterized by comprising an upper bin body (1), a first filtering bin body (111), a transition bin body (114), a second filtering bin body (115) and a lower bin body (116) which are sequentially communicated from top to bottom, the first filtering bin body (111) and the second filtering bin body (115) are identical in structure, an upper filtering net (2) and a lower filtering net (3) are respectively arranged in the two bins, the filtering aperture of the upper filtering net (2) is larger than that of the lower filtering net (3), the upper filtering net (2) and the lower filtering net (3) are respectively detachably arranged in the first filtering bin body (111) and the second filtering bin body (115) through a quick-detaching mechanism, a quick-detaching groove (112) is formed in the outer side of the first filtering bin body (111), quick detach groove (112) with the inside of the first storehouse body (111) of filtering is linked together, die cavity (113) that are used for installing quick detach mechanism are offered to the inner wall of the first storehouse body of filtering (111), be equipped with locking block (7) that can the pull in quick detach groove (112), locking block (7) are used for with quick detach mechanism pressure equipment in die cavity (113) to when locking block (7) with quick detach mechanism pressure equipment in die cavity (113), this locking block (7) can be dismantled with the first storehouse body of filtering (111) and be connected.

2. The powder feeding and foreign matter preventing filtering device as claimed in claim 1, wherein the quick-release mechanism comprises a rectangular frame (4), the rectangular frame (4) is matched with the cavity (113), the upper filter screen (2) is horizontally and movably arranged in the rectangular frame (4), one side of the filter screen is elastically connected with the inner frame side wall of the rectangular frame (4) through a plurality of reset spring pieces (411), the other side of the filter screen is provided with a translation cam (412), the outer surface of the translation cam (412) can be momentarily contacted with the outer side surface of the filter screen, the side of the translation cam (412) is provided with a pneumatic motor (413) in transmission connection with the translation cam, when the pneumatic motor (413) drives the translation cam (412) to rotate around the axis of the translation cam, the translation cam (412) can be abutted against the outer side surface of the filter screen, and the filter screen is forced to move horizontally towards the direction of the elastic sheet, and when the rectangular frame (4) is positioned in the cavity (113), one side surface of the locking block (7) facing the rectangular frame (4) can be in close contact with the outer side surface of the rectangular frame (4).

3. The powder feeding and foreign matter preventing filter device as claimed in claim 2, wherein: two opposite side surfaces of the rectangular frame (4) are respectively provided with a guide sliding block (414), one of the guide sliding blocks (414) can be opposite to and contact with the locking block (7), the guide sliding block (414) is provided with a vertical groove, the outer side of the rectangular frame (4) is provided with a sliding block which is vertically movably matched with the vertical groove, a rotating shaft (5) is arranged below the rectangular frame (4), the rotating shaft (5) is symmetrically sleeved with two lifting cams (511), the two lifting cams (511) respectively correspond to one side of the rectangular frame (4) and can be temporarily contacted with the bottom surface of the rectangular frame (4), one end of the rotating shaft (5) is provided with a rotating motor (512), a main shaft of the rotating motor (512) is in transmission connection with the rotating shaft (5), and the rotating motor (512) drives the lifting cams (511) to rotate around the axis of the rotating motor (512), this lifting cam (511) can conflict rectangle frame (4) and force it to take place vertical motion, the upper surface of die cavity (113) and the upper surface of rectangle frame (4) reserve the clearance that supplies its vertical activity, one side subsides that vertical groove was kept away from to guide slider (414) are equipped with first wear-resisting rubber layer, locking block (7) are equipped with second wear-resisting rubber layer towards one side of rectangle frame (4).

4. The powder feeding and foreign matter preventing filtering device as claimed in claim 3, wherein the open specifications of the upper bin body (1) and the filtering bin body are both smaller than the filtering areas of the upper filtering net (2) and the lower filtering net (3).

5. The powder feeding and foreign matter preventing filter device as claimed in claim 4, wherein the inner walls of the first filter bin body (111), except the inner wall in the cavity (113), are flush with the inner walls of the upper bin body (1) and the transition bin body (114).

6. The powder feeding and foreign matter prevention filter device as claimed in any one of claims 1 to 5, wherein the cavity (113) and the first filter cartridge body (111) are integrally formed.

7. A powder feeding and foreign matter prevention filter device as claimed in any one of claims 1 to 5, wherein one end of the locking block (7) is always located outside the quick release groove (112), and the end is a pulling end of the locking block (7), and the pulling end can be connected with the outside of the first filter cabin (111) through a bolt (6).