Vacuum feeding system

Abstract

The invention discloses a vacuum feeding system, which belongs to the technical field of feeding, and comprises a tank body and a fan: the side wall of the tank body is fixedly connected with a feeding pipe for feeding; the tank body is provided with a first rotary filtering assembly; the first rotary filtering assembly comprises a tank cover, a covering type pulse assembly, an intermittent rotating assembly and a multi-point filtering assembly, the tank cover is fixedly installed at the top of the tank body, the tank body is provided with the intermittent rotating assembly, the intermittent rotating assembly is provided with the multi-point filtering assembly, and the tank cover is connected with the covering type pulse assembly; the covering type pulse assembly is in sliding connection with the top of the intermittent rotating assembly in an attached mode. The tank cover is connected with a replacement assembly; the top of the tank cover is connected with a second rotary filtering assembly; the second rotary filter assembly is fixedly mounted at the top of the fan, and the air outlet end of the second rotary filter assembly is fixedly connected with the air inlet end of the fan. By means of the mode, the production environment can be kept clean, emission of pollutants such as dust is reduced, meanwhile, non-stop unblocking is achieved, and actual use is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of feeding, and in particular to a vacuum feeding system. Background Art

[0002] The original PFA vacuum feeding process generally uses a vacuum feeder.

[0003] For example, Chinese patent CN119258898A discloses a vacuum feeder for powder particles, in which a stirring structure is installed inside a barrel, the bottom of which extends to the discharge port of the barrel, and the top of which extends to a cover arranged on the outside of a filter cartridge; when the stirring structure is driven to rotate by a motor, the bottom stirs the material to prevent clogging; the top stirs the pleated filter cloth on the outside of the filter cartridge to shake off adhered material; the pleated filter cloth on the outside of the filter cartridge can be stirred to facilitate the falling of external dust, and the stirring can also loosen the particles at the filter holes, thereby improving the cleaning effect when the back-blowing air bag is used to clean the filter cartridge; and the stirring action can also stir the discharge port of the barrel to prevent clogging and accelerate the discharge of materials.

[0004] Although the above structure can play the role of vacuum feeding, it only has one filtration, which may easily cause incomplete filtration of powder, which is not conducive to practical use. At the same time, the machine needs to be stopped for clearing blockage, which cannot adapt to continuous production.

[0005] Based on this, the present invention designs a vacuum feeding system to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a vacuum feeding system.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A vacuum feeding system, comprising a tank and a fan: A feeding pipe for feeding is fixedly connected to the side wall of the tank body; The side wall of the tank is fixedly connected with a first liquid level sensor and a second liquid level sensor for material level monitoring; A first rotating filter assembly for primary filtration is connected to the top of the tank; The first rotary filter assembly includes a tank cover, a covering pulse assembly, an intermittent rotating assembly and a multi-point filter assembly. The tank cover is fixedly mounted on the top of the tank body, the upper end of the inner wall of the tank body is rotatably connected with the intermittent rotating assembly, a plurality of groups of multi-point filter assemblies are arranged at equal intervals along the circumferential direction on the top of the intermittent rotating assembly, the tank cover is connected with the covering pulse assembly, the covering pulse assembly is fitted and slidably connected with the top of the intermittent rotating assembly, and the outlet end of the covering pulse assembly completely covers at least one group of multi-point filter assemblies; The tank cover is connected with a replacement component for replacing the filter components at multiple locations; A second rotating filter assembly for secondary filtration is connected to the top of the tank cover; The second rotating filter assembly is fixedly installed on the top of the fan, and the air outlet end of the second rotating filter assembly is fixedly connected to the air inlet end of the fan.

[0008] Furthermore, the intermittent rotation component includes a first motor, a first bevel gear, a spur shaft, a circular plate, a second bevel gear, and a transverse shaft. The first motor is fixedly mounted on the upper end of the outer wall of the tank body, the output end of the first motor is fixedly connected to the transverse shaft, the inner end of the transverse shaft is fixedly connected to the second bevel gear, the second bevel gear is meshingly connected to the first bevel gear, a spur shaft is installed in the mounting hole of the first bevel gear, a circular plate is fixedly connected to the top of the spur shaft, the outer wall of the circular plate is fixedly connected to the upper end of the inner wall of the tank body through a bearing, a multi-point filter component is installed on the circular plate at equal intervals along the circumferential direction, and the top of the circular plate is fitted and slidably connected to the bottom of the covering pulse component.

[0009] Furthermore, the covered pulse assembly includes a pulse generator, a cover body, a straight pipe and a transverse pipe. The pulse generator is fixedly installed on the outer wall of the tank cover. The output end of the pulse generator passes through the tank cover and is fixedly connected to the transverse pipe. Straight pipes are fixedly connected to the bottom of the transverse pipe at equal intervals. The outer wall of the transverse pipe is fixedly connected to the cover body. The bottom of the cover body is slidably connected to the top of the circular plate. The straight pipe is located in the cover body. The cover body covers at least one group of multi-point filter components. The bottom of the straight pipe is opposite to the air outlet end of the multi-point filter component covered by the cover body.

[0010] Furthermore, the multi-point filtering component includes a step socket, a filter bag and a plug plate. The top of the circular plate is provided with step sockets at equal intervals along the circumference. The plug plate is plugged into the step sockets. The filter bag is installed in the mounting hole of the plug plate. The step sockets are connected to the replacement component.

[0011] Furthermore, the size of the upper end of the step socket is larger than the size of the lower end.

[0012] Furthermore, the replacement component includes a cover plate, a straight cylinder, an n-shaped plate, an L-shaped plate, an L-shaped groove and a socket. The plug plate is provided with an L-shaped groove in the middle, and the end of the lateral part of the L-shaped groove is provided with an upwardly arranged socket. The bottom of the n-shaped plate is fixedly connected to an L-shaped plate used in conjunction with the L-shaped groove and the socket. The top of the tank cover is fixedly connected to a straight cylinder, and the straight cylinder is rotatably connected to the cover plate through a hinge.

[0013] Furthermore, when the intermittent rotating assembly stops rotating, there is always a group of plug plates located directly below the straight tube.

[0014] Furthermore, the second rotating filter assembly includes an outer cylinder, a first pipe, a second pipe, a support frame, a rotating filter assembly and a scraper assembly. The support frame is fixedly installed on the top of the fan, and the outer cylinder is installed in the support frame. The air outlet end of the outer cylinder is fixedly connected to the second pipe, the second pipe is fixedly connected to the input end of the fan, the top of the outer cylinder is fixedly connected to the first pipe, the end of the outer cylinder away from the second pipe is fixedly connected to the rotating filter assembly, the bottom of the rotating filter assembly is connected to the scraper assembly, and the scraping part of the scraper assembly is slidably connected to the filtering part of the rotating filter assembly.

[0015] Furthermore, the rotary filter assembly includes an outer plate, a second motor, an annular frame, a cross bar, a filter cartridge and a rotating plate. The end of the outer cartridge away from the second pipe is fixedly connected to the outer plate, the outer plate is fixedly connected to the second motor, the output end of the second motor passes through the outer plate and is fixedly connected to the rotating plate, the end of the rotating plate away from the outer plate is fixedly connected to the cross bar at equal intervals along the circumferential direction, both ends of the filter cartridge are fixedly connected to annular frames, the annular frames are plugged into the cross bar through a socket, and the filter cartridge is located on the outside of the cross bar, and the scraping assembly is fixedly connected to the lower end of the inner wall of the outer plate.

[0016] Furthermore, the scraper assembly includes a scraper box, which is fixedly connected to the lower end of the inner wall of the outer panel, a group of upright parts of the scraper box is slidably connected to the outer wall of the filter cartridge, another group of upright parts of the scraper box does not contact the outer wall of the filter cartridge, and the filter cartridge rotates from the other group of upright parts of the scraper box to a group of upright parts of the scraper box.

[0017] Beneficial effect: the first liquid level sensor and the second liquid level sensor of the present invention monitor the material level. When replenishment is needed, the fan draws the gas in the tank body through the second rotating filter component and the first rotating filter component, and the gas in the tank body and the feed pipe is drawn away to form a vacuum negative pressure. The material enters the tank body through the feed pipe, and the gas passes through the first rotating filter component for a first filtration, and most of the powder is collected for use, which can avoid waste of powder. The gas filtered once enters the second rotating filter component for a second filtration. After the second filtration, the powder is prevented from being discharged through the second rotating filter component, which is beneficial to maintaining the production environment The environment is clean and the emission of pollutants such as dust is reduced. At the same time, the pollution to the workshop and the surrounding environment is reduced, the health of the operators is protected, and it is in line with the company's concept of green production and sustainable development. Among them, the intermittent rotating component drives the multi-point filter component that needs to be unblocked to rotate to the bottom of the covering pulse component, and the covering pulse component performs pulse unblocking on the multi-point filter component covered by the covering pulse component, and other multi-point filter components perform normal filtering, so that the first rotating filter component can filter continuously and unblock without stopping the machine, which is beneficial to actual use. In addition, the replacement component facilitates the replacement of the multi-point filter component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A vacuum feeding system of the present invention is a three-dimensional Figure 1 ; Figure 2 It is a front view of a vacuum feeding system of the present invention; Figure 3 It is a left view of a vacuum feeding system of the present invention; Figure 4 A vacuum feeding system of the present invention is a three-dimensional Figure 2 ; Figure 5 For along Figure 2 AA direction cross-sectional view; Figure 6 For along Figure 2 BB direction cross-sectional view; Figure 7 For along Figure 3 CC direction cross-sectional view; Figure 8 for Figure 5 A magnified view of the structure at D; Fig. 9 is a cross-sectional view of a second rotary filter assembly; Fig.10 is a schematic diagram of an n-shaped plate and its connection structure; Fig.11 for Figure 7 Enlarged view of the structure at E.

[0020] The numbers in the figure represent: 1. Tank body; 2. Feed pipe; 3. First rotary filter assembly; 31. Pulse generator; 32. Tank cover; 33. First motor; 34. Step jack; 35. Cover; 36. First bevel gear; 37. Straight shaft; 38. Round plate; 39. Straight tube; 310. Horizontal tube; 311. Second bevel gear; 312. Horizontal shaft; 313. Filter bag; 314. Insert plate; 4. Replacement assembly; 41. Cover plate; 42. Straight cylinder ; 43. N-shaped plate; 44. L-shaped plate; 45. L-shaped groove; 46. jack; 5. first liquid level sensor; 6. second liquid level sensor; 7. fan; 8. second rotating filter assembly; 81. outer cylinder; 82. first pipeline; 83. second pipeline; 84. support frame; 85. outer plate; 86. second motor; 87. annular frame; 88. cross bar; 89. filter cylinder; 810. scraper box; 811. rotating plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] For example, see Figure 1-Figure 11 , a vacuum feeding system, comprising a tank body 1 and a fan 7: A feeding pipe 2 for feeding is fixedly connected to the side wall of the tank body 1; A first liquid level sensor 5 and a second liquid level sensor 6 for material level monitoring are fixedly connected to the side wall of the tank body 1; A first rotating filter assembly 3 for primary filtration is connected to the top of the tank body 1; The first rotary filter assembly 3 includes a tank cover 32, a covering pulse assembly, an intermittent rotating assembly and a multi-point filtering assembly. The tank cover 32 is fixedly mounted on the top of the tank body 1. The upper end of the inner wall of the tank body 1 is rotatably connected with the intermittent rotating assembly. The top of the intermittent rotating assembly is provided with a plurality of groups of multi-point filtering assemblies at equal intervals along the circumferential direction. The tank cover 32 is connected with a covering pulse assembly. The covering pulse assembly is fitted and slidably connected with the top of the intermittent rotating assembly. The outlet end of the covering pulse assembly completely covers at least one group of multi-point filtering assemblies. The tank cover 32 is connected with a replacement component 4 for replacing the filter components at multiple locations; A second rotating filter assembly 8 for secondary filtration is connected to the top of the tank cover 32 .

[0024] The second rotating filter assembly 8 is fixedly installed on the top of the fan 7, and the air outlet end of the second rotating filter assembly 8 is fixedly connected to the air inlet end of the fan 7; The first liquid level sensor 5 and the second liquid level sensor 6 monitor the material level. When replenishment is needed, the fan 7 draws the gas in the tank body 1 through the second rotary filter component 8 and the first rotary filter component 3. The gas in the tank body 1 and the feed pipe 2 is drawn away to form a vacuum negative pressure. The material enters the tank body 1 through the feed pipe 2. The gas passes through the first rotary filter component 3 for a primary filtration, and most of the powder is collected for use, which can avoid waste of powder. The gas filtered once enters the second rotary filter component 8 for a secondary filtration. After the secondary filtration, the powder is prevented from being discharged through the second rotary filter component 8, which is conducive to maintaining production. The environment is clean and the emission of pollutants such as dust is reduced. At the same time, the pollution to the workshop and the surrounding environment is reduced, the health of the operators is protected, and it is in line with the company's concept of green production and sustainable development. Among them, the intermittent rotating component drives the multi-point filter component that needs to be unblocked to rotate to the bottom of the covering pulse component, and the covering pulse component performs pulse unblocking on the multi-point filter component covered by the covering pulse component, and other multi-point filter components perform normal filtering, so as to realize continuous filtering of the first rotating filter component 3 and realize unblocking without stopping the machine, which is beneficial to actual use. In addition, the replacement component 4 facilitates the replacement of the multi-point filter component.

[0025] The intermittent rotation assembly includes a first motor 33, a first bevel gear 36, a straight shaft 37, a circular plate 38, a second bevel gear 311, and a transverse shaft 312. The first motor 33 is fixedly installed on the upper end of the outer wall of the tank body 1. The output end of the first motor 33 is fixedly connected to the transverse shaft 312. The inner end of the transverse shaft 312 is fixedly connected to the second bevel gear 311. The second bevel gear 311 is meshedly connected to the first bevel gear 36. A straight shaft 37 is installed in the mounting hole of the first bevel gear 36. The top of the straight shaft 37 is fixedly connected to the circular plate 38. The outer wall of the circular plate 38 is fixedly connected to the upper end of the inner wall of the tank body 1 through a bearing. The circular plate 38 is equipped with a multi-point filter assembly at equal intervals along the circumferential direction. The top of the circular plate 38 is fitted and slidably connected to the bottom of the covering pulse assembly. The covered pulse assembly includes a pulse generator 31, a cover body 35, a straight pipe 39 and a transverse pipe 310. The pulse generator 31 is fixedly installed on the outer wall of the tank cover 32. The output end of the pulse generator 31 passes through the tank cover 32 and is fixedly connected to the transverse pipe 310. The bottom of the transverse pipe 310 is fixedly connected with straight pipes 39 at equal intervals. The outer wall of the transverse pipe 310 is fixedly connected with the cover body 35. The bottom of the cover body 35 is slidably connected to the top of the circular plate 38. The straight pipe 39 is located in the cover body 35. The cover body 35 covers at least one group of multi-point filter components. The bottom of the straight pipe 39 is opposite to the air outlet end of the multi-point filter component covered by the cover body 35.

[0026] The multi-point filtering assembly includes a step jack 34, a filter bag 313 and a plug plate 314. The top of the circular plate 38 is provided with step jacks 34 at equal intervals along the circumferential direction. The plug plate 314 is plugged into the step jack 34. The filter bag 313 is installed in the mounting hole of the plug plate 314. The step jack 34 is connected to the replacement assembly 4. The dimension of the upper end of the stepped insertion hole 34 is larger than the dimension of the lower end.

[0027] The first motor 33 of the intermittent rotating assembly rotates one circle to drive the circular plate 38 to rotate at an angle equal to the angle between adjacent step insertion holes 34, so that most of the powder is collected for use, thereby avoiding waste of powder.

[0028] When the blockage needs to be cleared, the first motor 33 of the intermittent rotating assembly rotates one circle, the first motor 33 drives the horizontal shaft 312 to rotate, the horizontal shaft 312 drives the second bevel gear 311 to rotate, the second bevel gear 311 drives the first bevel gear 36 to rotate, the first bevel gear 36 drives the straight shaft 37 to rotate, the straight shaft 37 drives the circular plate 38 to rotate, the circular plate 38 drives the plug plate 314 of the multi-point filter assembly to rotate, the plug plate 314 drives the filter bag 313 to rotate into the cover body 35 of the covering pulse assembly, and the top of the filter bag 313 is arranged opposite to the bottom of the straight pipe 39, the pulse generator 31 generates pulse gas, the pulse gas is discharged from the straight pipe 39 through the horizontal pipe 310, and then enters the filter bag 313, only the filter bag 313 under the cover body 35 is cleared, and the other covers 35 are filtered normally, so that the first rotating filter assembly 3 can filter continuously and clear the blockage without stopping, which is beneficial to practical use.

[0029] The replacement component 4 includes a cover plate 41, a straight cylinder 42, an n-shaped plate 43, an L-shaped plate 44, an L-shaped groove 45 and a socket 46. An L-shaped groove 45 is opened on the plug plate 314, and an upwardly arranged socket 46 is opened at the end of the lateral part of the L-shaped groove 45. The bottom of the n-shaped plate 43 is fixedly connected to an L-shaped plate 44 used in conjunction with the L-shaped groove 45 and the socket 46. The top of the tank cover 32 is fixedly connected to the straight cylinder 42, and the straight cylinder 42 is rotatably connected to the cover plate 41 through a hinge.

[0030] During loading, the fan 7 draws the gas from the tank cover 32 through the second rotating filter assembly 8, and the filter bag 313 performs a primary filtration. The plug plate 314 is provided with L-shaped grooves 45 at equal intervals, and the ends of the lateral parts of the L-shaped grooves 45 are provided with upwardly disposed plug holes 46. The top of the tank cover 32 is fixedly connected with a straight cylinder 42, and the straight cylinder 42 is rotatably connected with a cover plate 41 through a hinge. The bottom of the n-shaped plate 43 is fixedly connected with an L-shaped plate 44 used in conjunction with the L-shaped grooves 45 and the plug holes 46.

[0031] When the intermittent rotating assembly stops rotating, there is always a set of plug plates 314 located directly below the straight cylinder 42; When replacing the filter bag 313, the cover plate 41 is opened, the n-shaped plate 43 is extended into the straight cylinder 42, the n-shaped plate 43 drives the L-shaped plate 44 to be inserted into the L-shaped groove 45, the n-shaped plate 43 drives the L-shaped plate 44 to move horizontally, and then the n-shaped plate 43 drives the L-shaped plate 44 to move upward, the L-shaped plate 44 is inserted into the socket 46, and then the plug plate 314 is lifted upward, and the plug plate 314 drives the filter bag 313 to move out of the cover plate 41, and then the L-shaped plate 44 is separated from the plug plate 314, and then the L-shaped plate 44 is plugged into the new socket 46, and the new plug plate 314 is passed through the straight cylinder 42 and placed in the corresponding step socket 34, so as to facilitate the replacement of multi-point filter components.

[0032] The second rotary filter assembly 8 comprises an outer cylinder 81, a first pipe 82, a second pipe 83, a support frame 84, a rotary filter assembly and a scraper assembly. The support frame 84 is fixedly mounted on the top of the fan 7. The outer cylinder 81 is mounted inside the support frame 84. The air outlet end of the outer cylinder 81 is fixedly connected to the second pipe 83. The second pipe 83 is fixedly connected to the input end of the fan 7. The top of the outer cylinder 81 is fixedly connected to the first pipe 82. The end of the outer cylinder 81 away from the second pipe 83 is fixedly connected to the rotary filter assembly. The bottom of the rotary filter assembly is connected to the scraper assembly. The scraping part of the scraper assembly is slidably connected to the filtering part of the rotary filter assembly.

[0033] The rotary filter assembly includes an outer plate 85, a second motor 86, an annular frame 87, a cross bar 88, a filter cartridge 89 and a rotating plate 811. The end of the outer cartridge 81 away from the second pipe 83 is fixedly connected to the outer plate 85, the outer plate 85 is fixedly connected to the second motor 86, the output end of the second motor 86 passes through the outer plate 85 and is fixedly connected to the rotating plate 811, the end of the rotating plate 811 away from the outer plate 85 is fixedly connected to the cross bar 88 at equal intervals along the circumferential direction, both ends of the filter cartridge 89 are fixedly connected to the annular frame 87, the annular frame 87 is plugged into the cross bar 88 through the jack, and the filter cartridge 89 is located on the outside of the cross bar 88, and the scraping assembly is fixedly connected to the lower end of the inner wall of the outer plate 85.

[0034] The annular frame 87 away from the outer plate 85 is slidably connected to the inner wall of the tank body 1 .

[0035] The scraping assembly includes a scraping box 810, which is fixedly connected to the lower end of the inner wall of the outer plate 85, a group of upright parts of the scraping box 810 is slidably connected to the outer wall of the filter cartridge 89, another group of upright parts of the scraping box 810 is not in contact with the outer wall of the filter cartridge 89, and the filter cartridge 89 rotates from the other group of upright parts of the scraping box 810 to the group of upright parts of the scraping box 810; The gas in the tank cover 32 enters the outer cylinder 81 through the first pipe 82, and is filtered by the filter cylinder 89. The filtered gas enters the fan 7 through the second pipe 83, and the gas filtered once enters the second rotary filter assembly 8 for secondary filtration. After the secondary filtration, the powder is prevented from being discharged through the second rotary filter assembly 8, which is beneficial to keeping the production environment clean and reducing the emission of pollutants such as dust. At the same time, it reduces the pollution to the workshop and the surrounding environment, protects the health of operators, and is in line with the company's concept of green production and sustainable development.

[0036] When it is necessary to clean the dust on the filter cartridge 89, the second motor 86 drives the rotating plate 811 to rotate, the rotating plate 811 drives the cross bar 88 to rotate, the cross bar 88 drives the annular frame 87 to rotate, the annular frame 87 drives the filter cartridge 89 to rotate, the filter cartridge 89 rotates from another set of upright parts of the scraper box 810 to a set of upright parts of the scraper box 810, the dust on the outer wall of the scraper box 810 and the filter cartridge 89 is scraped and falls into the scraper box 810 for collection, which ensures the filtering performance of the filter cartridge 89 and is conducive to collection and processing.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vacuum feeding system, comprising a tank (1) and a fan (7), characterized in that: A feeding pipe (2) for feeding is fixedly connected to the side wall of the tank body (1); A first liquid level sensor (5) and a second liquid level sensor (6) for material level monitoring are fixedly connected to the side wall of the tank body (1); A first rotating filter assembly (3) for primary filtration is connected to the top of the tank body (1); The first rotary filter assembly (3) comprises a tank cover (32), a covering pulse assembly, an intermittent rotary assembly and a multi-point filter assembly, the tank cover (32) being fixedly mounted on the top of the tank body (1), the upper end of the inner wall of the tank body (1) being rotatably connected to the intermittent rotary assembly, a plurality of groups of multi-point filter assemblies being arranged at equal intervals along the circumferential direction on the top of the intermittent rotary assembly, the tank cover (32) being connected to the covering pulse assembly, the covering pulse assembly being fitted and slidably connected to the top of the intermittent rotary assembly, and the air outlet end of the covering pulse assembly completely covering at least one group of multi-point filter assemblies; The tank cover (32) is connected to a replacement component (4) for replacing the multi-point filter component; A second rotating filter assembly (8) for secondary filtration is connected to the top of the tank cover (32); The second rotating filter assembly (8) is fixedly mounted on the top of the fan (7), and the air outlet end of the second rotating filter assembly (8) is fixedly connected to the air inlet end of the fan (7).

2. The vacuum feeding system according to claim 1, characterized in that: The intermittent rotation component comprises a first motor (33), a first bevel gear (36), a straight shaft (37), a circular plate (38), a second bevel gear (311), and a transverse shaft (312). The first motor (33) is fixedly mounted on the upper end of the outer wall of the tank body (1). The output end of the first motor (33) is fixedly connected to the transverse shaft (312). The inner end of the transverse shaft (312) is fixedly connected to the second bevel gear (311). The second bevel gear (311) is meshingly connected to the first bevel gear (36). A straight shaft (37) is mounted in the mounting hole of the first bevel gear (36). The top of the straight shaft (37) is fixedly connected to the circular plate (38). The outer wall of the circular plate (38) is fixedly connected to the upper end of the inner wall of the tank body (1) via a bearing. The circular plate (38) is equidistantly mounted with multi-point filter components along the circumferential direction. The top of the circular plate (38) is fitted and slidably connected to the bottom of the covering pulse component.

3. The vacuum feeding system according to claim 2, characterized in that: The covered pulse assembly comprises a pulse generator (31), a cover body (35), a straight pipe (39) and a transverse pipe (310). The pulse generator (31) is fixedly mounted on the outer wall of a tank cover (32). The output end of the pulse generator (31) passes through the tank cover (32) and is fixedly connected to the transverse pipe (310). The bottom of the transverse pipe (310) is fixedly connected to the straight pipes (39) at equal intervals. The outer wall of the transverse pipe (310) is fixedly connected to the cover body (35). The bottom of the cover body (35) is slidably connected to the top of the circular plate (38). The straight pipe (39) is located inside the cover body (35). The cover body (35) covers at least one group of multi-point filter assemblies. The bottom of the straight pipe (39) is directly opposite to the gas outlet end of the multi-point filter assemblies covered by the cover body (35).

4. The vacuum feeding system according to claim 3, characterized in that: The multi-point filtering component comprises a step socket (34), a filter bag (313) and a plug plate (314); the top of the circular plate (38) is provided with step sockets (34) at equal intervals along the circumferential direction; the plug plate (314) is plugged into the step socket (34); the filter bag (313) is installed in the installation hole provided in the plug plate (314); and the step socket (34) is connected to the replacement component (4).

5. The vacuum feeding system according to claim 4, characterized in that: The size of the upper end of the step insertion hole (34) is larger than the size of the lower end.

6. The vacuum feeding system according to claim 5, characterized in that: The replacement assembly (4) comprises a cover plate (41), a straight tube (42), an n-shaped plate (43), an L-shaped plate (44), an L-shaped groove (45) and a plug hole (46); the plug plate (314) is provided with an L-shaped groove (45) at an equal interval; the end of the L-shaped groove (45) is provided with an upwardly disposed plug hole (46); the bottom of the n-shaped plate (43) is fixedly connected to an L-shaped plate (44) used in conjunction with the L-shaped groove (45) and the plug hole (46); the top of the tank cover (32) is fixedly connected to the straight tube (42); and the straight tube (42) is rotatably connected to the cover plate (41) via a hinge.

7. The vacuum feeding system according to claim 6, characterized in that: When the intermittent rotating assembly stops rotating, there is always a group of inserting plates (314) located directly below the straight cylinder (42).

8. The vacuum feeding system according to claim 7, characterized in that: The second rotary filter assembly (8) comprises an outer cylinder (81), a first pipe (82), a second pipe (83), a support frame (84), a rotary filter assembly and a scraper assembly. The support frame (84) is fixedly mounted on the top of the fan (7). The outer cylinder (81) is mounted inside the support frame (84). The air outlet end of the outer cylinder (81) is fixedly connected to the second pipe (83). The second pipe (83) is fixedly connected to the input end of the fan (7). The top of the outer cylinder (81) is fixedly connected to the first pipe (82). The end of the outer cylinder (81) away from the second pipe (83) is fixedly connected to the rotary filter assembly. The bottom of the rotary filter assembly is connected to the scraper assembly. The scraper portion of the scraper assembly is fitted and slidably connected to the filter portion of the rotary filter assembly.

9. The vacuum feeding system according to claim 8, characterized in that: The rotary filter assembly comprises an outer plate (85), a second motor (86), an annular frame (87), a cross bar (88), a filter cartridge (89) and a rotating plate (811); an end of the outer cartridge (81) away from the second pipe (83) is fixedly connected to the outer plate (85); the outer plate (85) is fixedly connected to the second motor (86); an output end of the second motor (86) passes through the outer plate (85) and is fixedly connected to the rotating plate (811); an end of the rotating plate (811) away from the outer plate (85) is fixedly connected to the cross bar (88) at equal intervals along the circumferential direction; both ends of the filter cartridge (89) are fixedly connected to the annular frame (87); the annular frame (87) is plugged into the cross bar (88) through a plug hole; the filter cartridge (89) is located outside the cross bar (88); and the dust scraping assembly is fixedly connected to the lower end of the inner wall of the outer plate (85).

10. The vacuum feeding system according to claim 9, characterized in that: The scraping assembly comprises a scraping box (810), the scraping box (810) being fixedly connected to the lower end of the inner wall of the outer plate (85), a group of upright parts of the scraping box (810) being slidably connected to the outer wall of the filter cartridge (89), another group of upright parts of the scraping box (810) not being in contact with the outer wall of the filter cartridge (89), and the filter cartridge (89) rotating from the other group of upright parts of the scraping box (810) to the group of upright parts of the scraping box (810).

Images