CN216937470U

CN216937470U - Diaphragm dust remover

Info

Publication number: CN216937470U
Application number: CN202220417158.9U
Authority: CN
Inventors: 宋志峰
Original assignee: Suzhou Zhunshuo Photoelectric Technology Co ltd
Current assignee: Suzhou Zhunshuo Photoelectric Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-12
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to a diaphragm dust remover, which comprises a circular belt line which is transversely arranged, wherein the circular belt line is formed by connecting a second circular belt conveyor and a first circular belt conveyor left and right, a dust removing roller is arranged between the second circular belt conveyor and the first circular belt conveyor, the dust removing roller is formed by two upper rollers which are arranged in parallel left and right and two lower rollers which are arranged in parallel left and right, the upper rollers and the lower rollers vertically correspond to each other, and a space which is convenient for diaphragms arranged on the circular belt line to pass through is arranged between the upper rollers and the lower rollers; the top and the bottom of the dust removal roller are provided with two dust removal mechanisms which are symmetrical up and down, and the two dust removal mechanisms which are symmetrical up and down are movably connected through a hinge arranged on the back. The membrane dust remover can automatically remove dust on the upper surface and the lower surface of the membrane, has high efficiency, saves labor force, reduces production cost and has good dust removal effect.

Description

Diaphragm dust remover

Technical Field

The utility model relates to a screen protection film dust removal device, in particular to a diaphragm dust remover.

Background

With the continuous progress of technology, many fields relate to the application of display screens, such as computers, mobile phones, vehicle-mounted multimedia navigation systems, and the like. The outer screen of the display is made of glass, is thin and easy to scratch, and therefore protective films can be attached to the screen film before the products leave a factory and are used for protecting the screen film.

The existing screen protection film generally comprises three layers, namely a protection layer, a low-viscosity protection film attached to the top surface of the protection layer and a stripping film attached to the bottom surface of the protection layer, wherein the protection layer is required to be torn off from the low-viscosity protection film on the top surface and the stripping film on the bottom surface before attachment, the protection layer is exposed in the air once the low-viscosity protection film and the stripping film are torn off, and various dust particles are easy to float in the air, so that the dust particles are easy to adhere to the protection layer exposed outside, and the attachment effect is influenced; in order to ensure the attaching effect of the protective film, the protective film needs to be subjected to dust removal treatment again before being attached, and the existing dust removal mode is that dust particles outside the protective layer are manually adhered through dust adhering paper in a manual mode, so that the attaching effect of the protective layer is ensured. However, the dust removal of the film protective layer in the protective film is manually performed, so that the efficiency is low, the cost is high, and the dust removal effect is poor.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a diaphragm dust remover capable of automatically removing dust from a protective film.

In order to solve the technical problems, the utility model is realized by the following technical scheme: a diaphragm dust remover comprises a circular belt line which is transversely arranged, wherein the circular belt line is formed by connecting a second circular belt conveyor and a first circular belt conveyor left and right, a dust removing roller is arranged between the second circular belt conveyor and the first circular belt conveyor, the dust removing roller is formed by two upper rollers which are arranged in parallel left and right and two lower rollers which are arranged in parallel left and right, the upper rollers and the lower rollers vertically correspond to each other, and a space which is convenient for diaphragms arranged on the circular belt line to pass through is arranged between the upper rollers and the lower rollers; the top and the bottom of the dust removal roller are provided with two dust removal mechanisms which are symmetrical up and down, and the two dust removal mechanisms which are symmetrical up and down are movably connected through a hinge arranged on the back surface.

Furthermore, the dust removing mechanism consists of a shell with an opening at one end and a dust adhering device inserted in the shell; the dust-binding device consists of a dust-binding paper roller and elastic pressing mechanisms symmetrically arranged at two ends of the dust-binding paper roller, and the dust-binding paper roller is positioned at the opening of the shell; the elastic pressing mechanism consists of an upper pressing mechanism and a lower pressing mechanism which correspond to each other up and down; the upper pressing mechanism consists of a pressing cylinder and a pressing block connected to the pressing cylinder, the pressing cylinder is fixedly connected to the shell, and the pressing block can move up and down through the pressing cylinder; the downward pressing mechanism comprises an end plate, an engagement hole which is communicated front and back is formed in the end plate, a guide joint which is in shaft connection with the dust binding paper roller is arranged in the engagement hole, a pressing block is arranged right above the guide joint, the top of the pressing block vertically corresponds to the bottom of the pressing block, a vertical downward inner guide pillar is arranged at the position, corresponding to the top surface of the guide joint, of the bottom of the pressing block, a guide hole which vertically corresponds to the inner guide pillar is formed in the top of the guide joint, and the tail end of the inner guide pillar is located in the guide hole; the bottom of the outer side of the end plate is provided with a convex block, the convex block is provided with outer guide pillars which are vertically upward, the outer guide pillars are provided with two guide connecting holes which are symmetrically arranged at two sides of the guide joint, the pressing block is provided with guide connecting holes which vertically correspond to the number and the positions of the outer guide pillars, and guide sleeves which are in sliding fit with the outer guide pillars are fixedly arranged in the guide connecting holes.

Furthermore, the upper and lower height of the connecting hole is greater than the superposition height of the guide joint and the pressing block, springs are arranged in the guide hole and outside the outer guide pillar, the spring arranged in the guide hole is sleeved outside the inner guide pillar, and the top of the spring is abutted against the bottom surface of the pressing block.

The shell is composed of end plates, side plates and a top plate, the end plates are provided with two blocks which are fixedly arranged at the front end and the rear end of the bottom surface of the top plate, the side plates are symmetrically arranged at the left side and the right side of the bottom surface of the top plate and are fixedly connected with the end plates, one end plate of the shell is provided with an insertion hole which is communicated with the inside and the outside, the outside of the insertion hole is provided with a limit baffle plate which is movably connected with the insertion hole, the limit baffle plate is connected with the corresponding end plate through a screw rod, and the outside of the limit baffle plate is provided with a handle; the dust-binding paper roller is characterized in that a shaft rod connected with the guide joint is arranged in the center of the end face of the dust-binding paper roller, one end, corresponding to the limiting baffle, of the shaft rod extends to the outer side of the limiting baffle, a long round hole which is communicated with the front portion and the rear portion is vertically formed in the limiting baffle, and one end, corresponding to the limiting baffle, of the shaft rod extends to the inside of the long round hole.

Furthermore, two end plates which are symmetrical in the front and back of the dust sticking device are fixedly connected together through a section bar, the two section bars are symmetrically arranged on the left side and the right side of the end plates, slide rails are fixedly arranged on the section bar, and slide grooves which correspond to the slide rails and are in sliding fit with the slide rails are fixedly arranged in the shell.

Further, bilateral symmetry is provided with two diaphragm side positioning mechanism around the second circular belt conveyer, diaphragm side positioning mechanism include with circular belt line fixed connection's fixing base, the fixing base top is provided with the fine setting slip table, is provided with the side location cylinder on the fine setting slip table, is provided with spacing curb plate on the side location cylinder.

Furthermore, a lower diaphragm positioning mechanism is arranged at the bottom of the second circular belt conveyor, the lower diaphragm positioning mechanism comprises a base, a jacking cylinder is arranged at the top of the base, a base plate is arranged on the jacking cylinder, a plurality of strip-shaped support blocks which are arranged in parallel at equal intervals are fixedly arranged at the top of the base plate, each strip-shaped support block can be matched between the circular belts of the second circular belt conveyor in an inserted manner, and a stop lever is arranged between every two adjacent strip-shaped support blocks; the base plate bottom is provided with links up the seat, links up and is provided with the tip cylinder on the seat, be provided with the connecting plate on the tip cylinder, the pin bottom with the connecting plate fixed connection is in the same place, and the tip cylinder can drive the pin through the connecting plate and remove about between the bar tray.

Furthermore, the upper roller is movably connected with the circular belt line through a bearing seat, and bearings matched with the bearing seat are arranged at the front end and the rear end of the upper roller.

Furthermore, the lower rollers are in transmission connection through servo motors fixedly arranged on the circular belt lines, the servo motors and the left and right lower rollers are in gear transmission, and the left and right lower rollers are in gear transmission with the second circular belt conveyor and the first circular belt conveyor respectively.

Compared with the prior art, the utility model has the advantages that: the membrane dust remover can automatically remove dust on the upper surface and the lower surface of the membrane, has high efficiency, saves labor force, reduces production cost and has good dust removal effect.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of a front side three-dimensional structure of a diaphragm dust collector of the utility model;

FIG. 2 is a schematic view of a back side three-dimensional structure of the diaphragm dust collector of the present invention;

FIG. 3 is a schematic view of the internal structure of the diaphragm dust collector of the present invention;

FIG. 4 is a schematic structural view of a dust adhering device in the diaphragm dust collector of the present invention;

FIG. 5 is a schematic view of a belt line structure in the diaphragm dust collector of the present invention;

FIG. 6 is a schematic structural view of a diaphragm side positioning mechanism in the diaphragm dust collector of the present invention;

FIG. 7 is a schematic view of a lower diaphragm positioning mechanism of the diaphragm dust collector of the present invention.

In the figure: 1. a round belt line; 11. a first circular belt conveyor; 12. a second circular belt conveyor; 2. a dust removal mechanism; 21. a housing; 22. a dust-sticking paper roller; 23. a pressing cylinder; 231. a compression block; 24. an end plate; 241. a bump; 242. a guide joint; 243. briquetting; 244. an outer guide post; 245. a guide sleeve; 246. an inner guide post; 247. a spring; 248. a shaft lever; 3. a diaphragm side positioning mechanism; 31. a fixed seat; 32. finely adjusting the sliding table; 33. a side positioning cylinder; 34. a limiting side plate; 4. a diaphragm lower positioning mechanism; 41. a base; 42. jacking a cylinder; 43. a substrate; 431. a strip-shaped support block; 44. a linking seat; 45. an end cylinder; 451. a connecting plate; 452. a stop lever; 5. a dust removal roller; 51. an upper roller; 52. a lower roller; 53. and a bearing seat.

Detailed Description

The utility model is described in detail below with reference to the following figures and embodiments:

1-3, the membrane dust remover comprises a horizontally arranged circular belt line 1, wherein the circular belt line 1 is formed by connecting a second circular belt conveyor 12 and a first circular belt conveyor 11 left and right, and a dust removing roller 5 is arranged between the second circular belt conveyor 12 and the first circular belt conveyor 11; as shown in fig. 5, the dust removing roller 5 is composed of two upper rollers 51 arranged in parallel left and right and two lower rollers 52 arranged in parallel left and right, the upper rollers 51 and the lower rollers 52 are vertically corresponding to each other, and a space for facilitating the passing of the film placed on the circular belt line 1 is arranged between the upper rollers 51 and the lower rollers 52; the top and the bottom of the dust removing roller 5 are provided with two dust removing mechanisms 2 which are symmetrical up and down, and the two dust removing mechanisms 2 which are symmetrical up and down are movably connected through a hinge arranged on the back.

As shown in fig. 4, the dust removing mechanism 2 is composed of a housing 21 with an opening at one end and a dust adhering device inserted into the housing 21; the dust-binding device consists of a dust-binding paper roller 22 and elastic pressing mechanisms symmetrically arranged at two ends of the dust-binding paper roller 22, and the dust-binding paper roller 22 is positioned at the opening of the shell 21; the elastic pressing mechanism consists of an upper pressing mechanism and a lower pressing mechanism which correspond up and down; the upward pressing mechanism consists of a pressing cylinder 23 and a pressing block 231 connected to the pressing cylinder 23, the pressing cylinder 23 is fixedly connected to the shell 21, and the pressing block 231 can move up and down through the pressing cylinder 23; the downward pressing mechanism comprises an end plate 24, an engagement hole which is communicated front and back is formed in the end plate 24, a guide joint 242 which is connected with the dust-binding paper roller 22 in a shaft mode is arranged in the engagement hole, a pressing block 243 is arranged right above the guide joint 242, the top of the pressing block 243 corresponds to the bottom of the pressing block 231 up and down, a vertically downward inner guide pillar 246 is arranged at the position, corresponding to the top surface of the guide joint 242, of the bottom of the pressing block 243, a guide hole which corresponds to the inner guide pillar 246 up and down is formed in the top of the guide joint 242, and the tail end of the inner guide pillar 246 is located in the guide hole; the bottom of the outer side of the end plate 24 is provided with a convex block 241, the convex block 241 is provided with outer guide pillars 244 which are vertically upward, the outer guide pillars 244 are provided with two and symmetrically arranged at two sides of the guide joint 242, the pressing block 243 is provided with guide connecting holes which vertically correspond to the number and positions of the outer guide pillars 244, and guide sleeves 245 which are in sliding fit with the outer guide pillars 244 are fixedly arranged in the guide connecting holes.

In order to facilitate the elastic movement of the guide joint 242 and the pressing block 243 up and down in the engaging hole, the height of the engaging hole is greater than the stacking height of the guide joint 242 and the pressing block 243, and springs 247 are disposed in the guide hole and outside the outer guide post 244, wherein the springs disposed in the guide hole are sleeved outside the inner guide post 246, and the top of the springs is in contact with the bottom surface of the pressing block 243.

In order to facilitate the assembly and disassembly of the dust-binding device in the shell 21, the shell 21 is composed of two end plates, two side plates and a top plate, the two end plates are fixedly arranged at the front end and the rear end of the bottom surface of the top plate, the two side plates are symmetrically arranged at the left side and the right side of the bottom surface of the top plate and are fixedly connected with the end plates, one end plate of the shell 21 is provided with an insertion hole which is communicated with the inside and the outside, the outer side of the insertion hole is provided with a limit baffle plate which is movably connected with the insertion hole, the limit baffle plate is connected with the corresponding end plate 24 through a screw rod, and the outer side of the limit baffle plate is provided with a handle; a shaft lever 248 connected with the guide joint 242 is arranged in the center of the end face of the dust-binding paper roller 22, one end of the shaft lever 248 corresponding to the limiting baffle extends outside the limiting baffle, a long round hole communicated front and back is vertically arranged on the limiting baffle, and one end of the shaft lever 248 corresponding to the limiting baffle extends in the long round hole. Two end plates 24 which are symmetrical in the front and back of the dust sticking device are fixedly connected together through a section bar, the two section bars are symmetrically arranged on the left side and the right side of the end plates 24, slide rails are fixedly arranged on the section bars, and slide grooves which correspond to the slide rails and are in sliding fit with the slide rails are fixedly arranged in the shell 21.

In order to inject the shift position of the diaphragm after removing dust on the second circular belt conveyor 12, prevent the off normal, as shown in fig. 6, bilateral symmetry is provided with two diaphragm side positioning mechanisms 3 around the second circular belt conveyor 12, diaphragm side positioning mechanism 3 includes the fixing base 31 with 1 fixed connection of circular belt line, and the fixing base 31 top is provided with fine setting slip table 32, is provided with side location cylinder 33 on the fine setting slip table 32, is provided with spacing curb plate 34 on the side location cylinder 33, and fine setting slip table 32 can the accurate adjustment position of side location cylinder 33, and spacing curb plate 34 can carry out sharp activity through side location cylinder 33, the quick adjustment of the position of being convenient for.

In order to limit the advancing position of the dedusted membrane on the second circular belt conveyor 12, as shown in fig. 7, a membrane lower positioning mechanism 4 is arranged at the bottom of the second circular belt conveyor 12, the membrane lower positioning mechanism 4 comprises a base 41, a jacking cylinder 42 is arranged at the top of the base 41, a base plate 43 is arranged on the jacking cylinder 42, a plurality of strip-shaped support blocks 431 which are arranged in parallel at equal intervals in the front and at the back are fixedly arranged at the top of the base plate 43, each strip-shaped support block 431 can be inserted and matched between the circular belts of the second circular belt conveyor 12, and a stop lever 452 is arranged between two adjacent strip-shaped support blocks 431; the bottom of the base plate 43 is provided with a connecting seat 44, the connecting seat 44 is provided with an end cylinder 45, the end cylinder 45 is provided with a connecting plate 451, the bottom of the stop lever 452 is fixedly connected with the connecting plate 451, and the end cylinder 45 can drive the stop lever 452 to move left and right between the strip-shaped support blocks 431 through the connecting plate 451.

In order to drive the upper roller 51 to synchronously rotate through the lower roller 52, the upper roller 51 is movably connected with the round belt line 1 through a bearing seat 53, and bearings matched with the bearing seat 53 are arranged at the front end and the rear end of the upper roller 51.

In order to realize synchronous and same-direction movement of the lower roller 52 and the second circular belt conveyor 12 and the first circular belt conveyor 11, the lower roller 52 is in transmission connection with a servo motor fixedly arranged on the circular belt line 1, the servo motor and the left and right lower rollers 52 are in gear transmission, and the left and right lower rollers 52 are in gear transmission with the second circular belt conveyor 12 and the first circular belt conveyor 11 respectively.

The specific working principle is as follows: the servo motor drives the lower roller 52, the second circular belt conveyor 12 and the first circular belt conveyor 11 to rotate anticlockwise synchronously through gears, the compacting cylinder 23 in the dust removing mechanism 2 positioned above drives the compacting block 231 to move downwards, the compacting block 231 pushes the compacting block 243 to move downwards after contacting with the compacting block 243, the compacting block 243 drives the guide joint 242 to move downwards, the guide joint 242 drives the dust-binding paper roller 22 to move downwards through the shaft rod 248, the dust-binding paper roller 22 contacts with the two upper rollers 51 which are bilaterally symmetrical, so that rolling fit is realized, and similarly, the dust-binding paper roller 22 of the dust removing mechanism 2 positioned below contacts with the two lower rollers 52 which are bilaterally symmetrical, so that rolling fit is realized; the film sheet after being subjected to film removal is placed on a first circular belt conveyor 11, the film sheet moves towards the dust removal mechanism 2 through the first circular belt conveyor 11, when the film sheet passes through a position between an upper roller 51 and a lower roller 52, dust particles adhered to the upper surface and the lower surface of the film sheet can be removed by adhesion of the upper roller 51 and the lower roller 52, the dust particles adhered to the upper roller 51 and the lower roller 52 pass through a dust-sticking paper roller 22 along with the rotation of the upper roller 51 and the lower roller 52, the dust-sticking paper roller 22 can remove the dust particles adhered to the upper roller 51 and the lower roller 52 in an adhesion manner, the cleanliness of the surfaces of the upper roller 51 and the lower roller 52 is ensured, and the adhered dust particles cannot be adhered to the next film sheet again when the upper roller 51 and the lower roller 52 rotate repeatedly; the dedusted membrane is conveyed to a second circular belt conveyor 12, and the membrane is limited by membrane side positioning mechanisms 3 on two sides of the second circular belt conveyor 12 to prevent deviation; meanwhile, the strip-shaped supporting block 431 on the lower membrane positioning mechanism 4 is lifted upwards through the lifting cylinder 42, the membrane is intercepted through the blocking rod 452 extending out of the top surface of the second circular belt conveyor 12, and along with the further rising of the strip-shaped supporting block 431, the membrane can be lifted and separated from the surface of the second circular belt conveyor 12, so that the advancing of the membrane is limited, and meanwhile, the material taking is facilitated.

The membrane dust remover can automatically remove dust on the upper surface and the lower surface of the membrane, has high efficiency, saves labor force, reduces production cost and has good dust removal effect.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A diaphragm dust shaker which characterized in that: the device comprises a circular belt line (1) which is transversely arranged, wherein the circular belt line (1) is formed by connecting a second circular belt conveyor (12) and a first circular belt conveyor (11) left and right, a dust removing roller (5) is arranged between the second circular belt conveyor (12) and the first circular belt conveyor (11), the dust removing roller (5) is formed by two upper rollers (51) which are arranged in parallel left and right and two lower rollers (52) which are arranged in parallel left and right, the upper rollers (51) correspond to the lower rollers (52) up and down, and a space which is convenient for a film placed on the circular belt line (1) to pass through is arranged between the upper rollers (51) and the lower rollers (52); the top and the bottom of the dust removing roller (5) are provided with two dust removing mechanisms (2) which are symmetrical up and down, and the two dust removing mechanisms (2) which are symmetrical up and down are movably connected through a hinge arranged on the back.

2. A membrane dust collector according to claim 1, characterized in that: the dust removal mechanism (2) consists of a shell (21) with an opening at one end and a dust adhering device inserted in the shell (21); the dust adhering device consists of a dust adhering paper roller (22) and elastic pressing mechanisms symmetrically arranged at two ends of the dust adhering paper roller (22), and the dust adhering paper roller (22) is positioned at the opening of the shell (21); the elastic pressing mechanism consists of an upper pressing mechanism and a lower pressing mechanism which correspond to each other up and down; the upward pressing mechanism consists of a pressing cylinder (23) and a pressing block (231) connected to the pressing cylinder (23), the pressing cylinder (23) is fixedly connected to the shell (21), and the pressing block (231) can move up and down through the pressing cylinder (23); the downward pressing mechanism comprises an end plate (24), an engagement hole which is communicated with the front and the back is formed in the end plate (24), a guide joint (242) which is connected with the dust-binding paper roller (22) in a shaft mode is arranged in the engagement hole, a pressing block (243) is arranged right above the guide joint (242), the top of the pressing block (243) corresponds to the bottom of the pressing block (231) up and down, a vertically downward inner guide pillar (246) is arranged at the position, corresponding to the top surface of the guide joint (242), of the bottom of the pressing block (243), a guide hole which corresponds to the inner guide pillar (246) up and down is formed in the top of the guide joint (242), and the tail end of the inner guide pillar (246) is located in the guide hole; the bottom of the outer side of the end plate (24) is provided with a convex block (241), the convex block (241) is provided with outer guide pillars (244) which are vertically upward, the number of the outer guide pillars (244) is two, the outer guide pillars are symmetrically arranged on two sides of the guide joint (242), the pressing block (243) is provided with guide connecting holes which vertically correspond to the number and the positions of the outer guide pillars (244), and guide sleeves (245) which are in sliding fit with the outer guide pillars (244) are fixedly arranged in the guide connecting holes.

3. A membrane dust collector according to claim 2, characterized in that: the upper and lower height of the connecting hole is larger than the superposition height of the guide joint (242) and the pressing block (243), springs (247) are arranged in the guide hole and outside the outer guide post (244), the springs arranged in the guide hole are sleeved outside the inner guide post (246), and the top of the springs is abutted against the bottom surface of the pressing block (243).

4. A diaphragm dust collector according to claim 2, wherein: the shell (21) consists of end plates, side plates and a top plate, wherein the two end plates are fixedly arranged at the front end and the rear end of the bottom surface of the top plate, the two side plates are symmetrically arranged at the left side and the right side of the bottom surface of the top plate and are fixedly connected with the end plates, one end plate of the shell (21) is provided with an insertion hole which is communicated with the inside and the outside, the outer side of the insertion hole is provided with a limit baffle plate which is movably connected with the insertion hole, the limit baffle plate is connected with the corresponding end plate (24) through a screw rod, and the outer side of the limit baffle plate is provided with a handle; the dust-binding paper roller is characterized in that a shaft lever (248) connected with the guide joint (242) is arranged in the center of the end face of the dust-binding paper roller (22), one end, corresponding to the limiting baffle, of the shaft lever (248) extends to the outer side of the limiting baffle, a long round hole which is communicated with the front and the back is vertically formed in the limiting baffle, and one end, corresponding to the limiting baffle, of the shaft lever (248) extends to the inside of the long round hole.

5. A membrane dust collector according to claim 2, characterized in that: two end plates (24) which are symmetrical in the front and back in the dust binding device are fixedly connected together through a section bar, the two section bars are symmetrically arranged on the left side and the right side of the end plates (24), slide rails are fixedly arranged on the section bars, and slide grooves which correspond to the slide rails and are in sliding fit with the slide rails are fixedly arranged in the shell (21).

6. A membrane dust collector according to claim 1, characterized in that: the two-side positioning mechanism (3) is symmetrically arranged on the front side and the rear side of the second circular belt conveyor (12), the two-side positioning mechanism (3) comprises a fixing seat (31) fixedly connected with a circular belt line (1), a fine adjustment sliding table (32) is arranged at the top of the fixing seat (31), a side positioning cylinder (33) is arranged on the fine adjustment sliding table (32), and a limiting side plate (34) is arranged on the side positioning cylinder (33).

7. A membrane dust collector according to claim 1, characterized in that: a lower diaphragm positioning mechanism (4) is arranged at the bottom of the second circular belt conveyor (12), the lower diaphragm positioning mechanism (4) comprises a base (41), a jacking cylinder (42) is arranged at the top of the base (41), a base plate (43) is arranged on the jacking cylinder (42), a plurality of strip-shaped support blocks (431) which are arranged in parallel at equal intervals in the front and at the back are fixedly arranged at the top of the base plate (43), each strip-shaped support block (431) can be inserted and matched between circular belts of the second circular belt conveyor (12), and a stop lever (452) is arranged between every two adjacent strip-shaped support blocks (431); the base plate (43) bottom is provided with links up seat (44), links up and is provided with tip cylinder (45) on seat (44), be provided with connecting plate (451) on tip cylinder (45), pin (452) bottom with connecting plate (451) fixed connection is in the same place, and tip cylinder (45) can drive pin (452) through connecting plate (451) and move about between bar tray (431).

8. A membrane dust collector according to claim 1, characterized in that: the upper roller (51) is movably connected with the round belt line (1) through a bearing seat (53), and bearings matched with the bearing seat (53) are arranged at the front end and the rear end of the upper roller (51).

9. A membrane dust collector according to claim 1, characterized in that: the lower rollers (52) are in transmission connection through servo motors fixedly arranged on the circular belt line (1), the servo motors and the left and right lower rollers (52) are in gear transmission, and the left and right lower rollers (52) are in gear transmission with the second circular belt conveyor (12) and the first circular belt conveyor (11) respectively.