Tower type membrane impurity separation device

Abstract

The utility model provides a tower type membrane impurity separation device, and relates to the field of environmental protection equipment. The device comprises a base, a plurality of separation assemblies, a feeding device, a discharging device and an air supply device. The multiple separation assemblies are stacked on the base from bottom to top to form a tower structure, the interiors of the multiple inner tower bodies are arranged in a surrounding mode in the height direction to form a first space, and the multiple inner tower bodies and the multiple outer tower bodies are arranged in a surrounding mode in the height direction to form a second space. A plurality of through holes with preset diameters are formed in the side wall of the inner tower body, so that the first space is communicated with the second space; the feeding device is used for feeding film sundries into the first space; the air supply device is used for feeding airflow into the first space, so that the film sundries are separated under the action of the airflow; an inlet of the discharging device communicates with the top of the first space and is used for discharging residual films; according to the device, the effect of fully separating residual films from cotton stalks, cotton, soil impurities and dust is achieved, and the resourceful utilization efficiency of after-treatment of the residual films is improved.

Description

Technical Field

[0001] The utility model relates to the field of environmental protection equipment, in particular to a tower-type membrane impurity separation device. Background Art

[0002] In recent years, with the steady progress of farmland film recycling efforts and the continuous advancement and rapid development of film recycling machinery, the recovery rate of farmland film has steadily increased, and farmland film recycling has achieved certain results. However, the situation of farmland film pollution remains severe. Recovered film is not promptly sorted, processed, or used as a resource. Instead, it is piled up in fields, woods, and wastelands, not only occupying a large amount of land resources but also polluting the environment.

[0003] Since the recycled residual film contains a large amount of cotton stalks, cotton, soil, etc., the efficiency of resource utilization of the residual film after post-processing is low. Utility Model Content

[0004] The purpose of the utility model is to provide a tower-type membrane impurity separation device to solve the problem of low resource utilization efficiency of residual membrane post-processing in the prior art.

[0005] Based on the above purpose, the present application provides a tower membrane impurity separation device, including a base, multiple separation components, a feeding device, a discharging device and an air supply device;

[0006] Multiple separation assemblies are stacked on the base from bottom to top to form a tower structure, wherein the top of the separation assembly on the uppermost layer is sealed by a top plate, and the bottom of the separation assembly on the lowermost layer is sealed by a bottom plate; the separation assembly includes an inner tower body, an outer tower body and a first connecting member;

[0007] The inner tower body is fixed to the inside of the outer tower body through a plurality of first connecting members, and the interiors of the plurality of inner tower bodies are enclosed along the height direction to form a first space, and the plurality of inner tower bodies and the plurality of outer tower bodies are enclosed along the height direction to form a second space, and the side wall of the inner tower body is provided with a plurality of through holes of a preset diameter to connect the first space and the second space; wherein,

[0008] The feeding device is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through a feeding pipe, and is used to feed the membrane impurities into the first space;

[0009] The air supply device is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through the air supply pipe group, and is used to send air into the first space so that the membrane impurities are separated under the action of the air flow;

[0010] The discharging device is arranged on the top plate, and the inlet of the discharging device is communicated with the top of the first space for discharging the residual film.

[0011] Furthermore, the inner tower body has a polygonal structure or a cylindrical structure.

[0012] Furthermore, the outer tower body is in a polygonal structure or a cylindrical structure, and the shape of the outer tower body matches that of the inner tower body.

[0013] Furthermore, the feeding device includes a feeding fan, a feeding drive motor and a feeding transmission assembly;

[0014] Among them, the discharge end of the feeding fan is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through the feeding pipe, and the feeding drive motor is connected to the transmission shaft of the feeding fan through the transmission assembly to drive the feeding fan to operate.

[0015] Furthermore, the air supply device includes an air supply fan, a pipe joint, an air supply drive motor and an air supply transmission assembly;

[0016] Among them, the discharge end of the feeding fan is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through the feeding pipe, and the feeding drive motor is connected to the transmission shaft of the feeding fan through the transmission assembly to drive the feeding fan to operate.

[0017] Furthermore, the pipe joint adopts a multi-pipe joint, and the air supply pipe group includes multiple air supply ducts. The air inlet of each air supply duct is connected to the interface of the multi-pipe joint, and the air outlet of each air supply duct is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body, which is used to send airflow into the first space.

[0018] Furthermore, the discharging device includes a volute, and the inlet of the volute is connected to the outlet preset in the middle of the top plate.

[0019] Furthermore, it also includes a debris removal device, which includes a debris removal air shutoff device, a first spiral conveying mechanism and a debris removal conveying channel;

[0020] The inlet of the impurity exhaust air shutoff device is connected to the impurity exhaust port preset on the bottom plate corresponding to the inner tower body, and the outlet of the impurity exhaust air shutoff device is connected to one end of the impurity exhaust conveying channel. The first spiral conveying mechanism is arranged in the impurity exhaust conveying channel for discharging impurities.

[0021] Furthermore, it also includes at least one soil discharge device, which includes a soil discharge air shutoff device, a second spiral conveying mechanism and a soil discharge conveying channel;

[0022] The inlet of the soil discharge air shutoff device is connected to the soil discharge port preset on the bottom plate corresponding to the bottom of the second space, and the outlet of the soil discharge air shutoff device is connected to one end of the soil discharge conveying channel. The second spiral conveying mechanism is arranged in the soil discharge conveying channel for discharging soil and debris.

[0023] Furthermore, it also includes a plurality of reinforcement columns, which are arranged outside the multi-layer outer tower body and are used to connect and fix the multi-layer outer tower body.

[0024] By adopting the above technical solution, the tower membrane impurity separation device provided by this application has the following technical effects compared with the existing technology:

[0025] A plurality of separation components are stacked on the base from bottom to top to form a tower structure, the inner tower body is fixed to the inside of the outer tower body by a plurality of first connecting parts, the interiors of the plurality of inner tower bodies are enclosed to form a first space along the height direction, and a second space is enclosed between the plurality of inner tower bodies and the plurality of outer tower bodies along the height direction, and a plurality of through holes of preset diameters are provided on the side wall of the inner tower body to connect the first space with the second space; wherein, the feeding device is used to feed the film impurities into the first space; the air supply device is used to feed the air flow into the first space so that the film impurities are separated under the action of the air flow; the discharging device is provided on the top plate, and the inlet of the discharging device is connected to the top of the first space for discharging the residual film;

[0026] During use, the film debris material (i.e. the residual film wrapped with a large amount of cotton stalks, cotton, and soil) is fed into the bottom area of the first space through the feeding device and the feeding pipe, and the high-speed airflow is fed into the bottom area of the first space through the air supply device and the air supply pipe group. The high-speed airflow spirals up and continues to blow away the residual film wrapped with a large amount of cotton stalks, cotton, and soil. Since the residual film is lighter than cotton stalks, cotton, and soil, the residual film will spiral up with the airflow, so that the residual film and cotton stalks and cotton are stratified along the height direction inside the first empty part, and the residual film rises to the discharging device and is discharged to the outside; cotton stalks and cotton are heavier than the residual film and fall to the bottom plate at the bottom of the first space; soil and dust pass through the through hole from the first space into the second space and fall to the bottom plate at the bottom of the second space, thereby achieving a full separation effect of the residual film and cotton stalks, cotton, soil and dust, and improving the efficiency of resource utilization of the residual film post-processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a tower membrane impurity separation device provided in an embodiment of the present application from a first perspective;

[0029] Figure 2 2. It is a schematic structural diagram of a tower membrane impurity separation device provided in an embodiment of the present application at a second viewing angle;

[0030] Figure 3 2. It is a schematic structural diagram of a tower membrane impurity separation device provided in an embodiment of the present application from a third perspective;

[0031] Figure 4 It is a schematic diagram of the structure of the separation component;

[0032] Figure 5 yes Figure 2 A magnified schematic diagram of point A in the middle;

[0033] Figure 6 yes Figure 2 Enlarged schematic diagram of point B in the middle.

[0034] Icons: 100-base; 110-top plate; 120-bottom plate; 200-separation assembly; 210-inner tower body; 211-through hole; 212-inner ribs; 213-inner crossbeam; 214-inner sealing plate; 220-outer tower body; 221-outer ribs; 222-outer crossbeam; 223-outer sealing plate; 230-first connecting piece; 240-first space; 250-second space; 260-second connecting piece; 300-feeding device; 310-feeding pipe; 320-feeding fan; 330-feeding drive Drive motor; 340-feeding transmission assembly; 400-discharging device; 500-air supply device; 510-air supply pipe group; 520-air supply fan; 530-pipe joint; 540-air supply drive motor; 550-air supply transmission assembly; 600-debris discharge device; 610-debris discharge air shutoff device; 620-first spiral conveying mechanism; 630-debris discharge conveying channel; 700-soil discharge device; 710-soil discharge air shutoff device; 720-second spiral conveying mechanism; 730-soil discharge conveying channel; 800-reinforcement column. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] like Figures 1 to 6 As shown, an embodiment of the present application provides a tower membrane impurity separation device, which includes a base 100, a plurality of separation components 200, a feeding device 300, a discharging device 400 and an air supply device 500.

[0039] The base 100 may be a welded steel bracket;

[0040] A plurality of separation assemblies 200 are stacked on the base 100 from bottom to top to form a tower structure;

[0041] The top of the separation assembly 200 at the uppermost layer is sealed by the top plate 110 , and the bottom of the separation assembly 200 at the lowermost layer is sealed by the bottom plate 120 ;

[0042] Specifically, the separation assembly 200 includes an inner tower body 210, an outer tower body 220 and a first connecting member 230;

[0043] The inner tower body 210 is fixed to the interior of the outer tower body 220 via a plurality of first connecting members 230. A first space 240 is defined within the interior of the plurality of inner tower bodies 210 along the height direction, and a second space 250 is defined between the plurality of inner tower bodies 210 and the plurality of outer tower bodies 220 along the height direction. A plurality of through holes 211 of a predetermined diameter are provided on the sidewall of the inner tower body 210 to connect the first space 240 with the second space 250.

[0044] The feeding device 300 is connected to the bottom plate 120 or the side wall corresponding to the bottom of the inner tower body 210 through the feeding pipe 320, and is used to feed the membrane impurities into the first space 240;

[0045] The air supply device 500 is connected to the bottom plate 120 and / or the side wall corresponding to the bottom of the inner tower body 210 through the air supply pipe group 510, and is used to send air into the first space 240 to separate the membrane impurities under the action of the air flow;

[0046] The discharge device 400 is disposed on the top plate 110 , and an inlet of the discharge device 400 is communicated with the top of the first space 240 for discharging residual film.

[0047] In actual application, the film debris (i.e. the residual film wrapped with a large amount of cotton stalks, cotton, and soil) is fed into the bottom area of the first space 240 through the feeding device 300 and the feeding pipe 320, and the high-speed airflow is fed into the bottom area of the first space 240 through the air supply device 500 and the air supply pipe group 510. The high-speed airflow spirally rises and continues to blow away the residual film wrapped with a large amount of cotton stalks, cotton, and soil. Since the residual film is lighter than the cotton stalks, cotton, and soil, the residual film will spirally rise with the airflow, so that the residual film and the cotton will be separated. The stalks and cotton are layered in the height direction inside the first empty part, and the residual film rises to the discharging device 400 and is discharged to the outside; the cotton stalks and cotton are heavier than the residual film and fall to the bottom plate 120 at the bottom of the first space 240; dirt and dust pass through the through hole 211 from the first space 240 into the second space 250 and fall to the bottom plate 120 at the bottom of the second space 250, thereby achieving a sufficient separation effect on the residual film and cotton stalks, cotton, dirt and dust, and improving the efficiency of resource utilization of the residual film post-processing.

[0048] In this solution, the inner tower body 210 may be a polygonal structure or a cylindrical structure. Of course, other shapes may also be used as an alternative.

[0049] Similarly, the outer tower body 220 may also be a polygonal structure, a cylindrical structure or other shapes, requiring the outer tower body 220 to be adapted to the shape of the inner tower body 210; for example, the inner tower body 210 and the outer tower body 220 in this embodiment take polygonal structures as an example, and the polygons may be quadrilaterals, hexagons or octagons.

[0050] Reference Figure 4 As a preferred embodiment, the inner tower body 210 adopts an octagonal body. Specifically, the inner tower body 210 includes inner vertical ribs 212, inner cross beams 213 and inner sealing plates 214. The inner vertical ribs 212 and inner cross beams 213 are connected to each other to form an octagonal body. The inner sealing plates 214 are configured as rectangular parallelepipeds. Each side of the inner sealing plate 214 is connected to the inner vertical ribs 212 and inner cross beams 213 by bolts to form the inner tower body 210. A plurality of through holes are evenly arranged on the inner sealing plate 214 to achieve communication between the first space and the second space.

[0051] Similarly, the outer tower body 220 adopts an octagonal body. Specifically, the outer tower body 220 includes outer vertical ribs 221, outer cross beams 222 and outer cover plates 223; the outer vertical ribs 221 and outer cross beams 222 are interconnected to form an octagonal body, and the outer cover plates 223 are configured as a rectangular parallelepiped. The side edges of the outer cover plates 223 are connected to the outer vertical ribs 221 and the outer cross beams 222 by bolts to form the outer tower body 220.

[0052] Sixteen first connecting members 230 may be provided, eight of which are used to connect the upper portion of the outer tower body 220 and the inner tower body 210 , and the other eight are used to connect the lower portion of the outer tower body 220 and the inner tower body 210 to ensure the structural strength of the outer tower body 220 and the inner tower body 210 .

[0053] It should be noted that the side walls of the inner tower body 210 and the outer tower body 220 refer to the inner sealing plate 214 and the outer sealing plate 223 respectively. When the feeding pipe 320 is connected to the side wall of the inner tower body 210, the feeding pipe 320 passes through the inner tower body 210 and the outer tower body 220 respectively to achieve communication between the feeding pipe 320 and the first space 240.

[0054] In addition, multiple second connecting members 260 are respectively provided at the bottom and top of the outer tower body 220. The second connecting members 260 are used to connect the outer tower bodies 220 from top to bottom through bolts, wherein the second connecting member 260 at the bottom of the outer tower body 220 at the lowest layer is connected to the base 100.

[0055] Reference Figure 1 , in this solution, the feeding device 300 includes a feeding fan 320, a feeding drive motor 330 and a feeding transmission assembly 340;

[0056] Among them, the discharge end of the feeding fan 320 is connected to the bottom plate 120 (the preset feeding hole on the bottom plate 120 is used to connect the feeding pipe 320) or the side wall (the preset feeding holes on the side walls of the inner tower body 210 and the outer tower body 220 are used to connect the feeding pipe 320) corresponding to the bottom of the inner tower body 210 through the feeding pipe 320, and the feeding drive motor 330 is connected to the drive shaft of the feeding fan 320 through the feeding transmission assembly 340, which is used to drive the feeding fan 320 to operate. The feeding transmission assembly 340 can be a belt drive or chain drive structure.

[0057] During use, the residual film wrapped with a large amount of cotton stalks, cotton, and dirt passes through the feed end of the feeding fan 320, and then enters the inner bottom of the first space 240 through the feeding fan 320 and the feeding pipe 320 in turn. The feed hole is set at an upward angle, and the residual film wrapped with a large amount of cotton stalks, cotton, and dirt is blown away by the airflow brought in to the bottom area of the first space 240.

[0058] Reference Figure 1, in this solution, the air supply device 500 includes an air supply fan 520, a pipe joint 530, an air supply drive motor 540 and an air supply transmission assembly 550;

[0059] The air outlet of the air supply fan 520 is connected to the air supply pipe group 510 through the pipe joint 530, and the air outlet of the air supply pipe group 510 is connected to the bottom plate 120 or the side wall corresponding to the bottom of the inner tower body 210, so as to send the air flow into the first space 240, so that the membrane impurities are separated under the action of the air flow;

[0060] The air supply drive motor 540 is connected to the drive shaft of the air supply fan 520 through the air supply transmission assembly 550 to drive the air supply fan 520 to operate. The air supply transmission assembly 550 can be in the form of belt drive or chain drive.

[0061] Preferably, the pipe joint 530 adopts a multi-pipe joint, and the air supply pipe group 510 includes multiple air supply ducts; for example, the pipe joint 530 adopts a four-way pipe joint 530, and accordingly, three air supply ducts are adopted, the air inlet of each air supply duct is connected to the interface of the corresponding four-way pipe joint 530, and the air outlet of each air supply duct is connected to the base plate 120 corresponding to the bottom of the inner tower body 210 and / or the side walls of the inner tower body and the outer tower body, for delivering airflow into the first space 240.

[0062] In addition, the air outlets of multiple air supply ducts can be evenly arranged on the base plate 120 corresponding to the bottom of the inner tower body 210, as well as on the side walls of the inner tower body 210 and the inner tower body 220. Under this structural form, the air supply is more uniform. When the air outlets of the air supply ducts are connected to the side walls of the inner tower body 210 and the inner tower body 220, openings can be coaxially arranged on the side walls of the outer tower body 220 and the inner tower body 210 for assembling the air supply ducts, and a sealing ring is provided between the opening and the air supply duct to ensure the sealing effect.

[0063] During use, a high-speed airflow enters the first space 240, and the airflow spirals upward, continuing to blow away the residual film wrapped with a large amount of cotton stalks, cotton, and dirt. Since the residual film is lighter than the cotton stalks, cotton, and dirt, the residual film spirals upward with the airflow, and the residual film, cotton stalks, and cotton are layered in the vertical direction inside the first space 240. The residual film rises to the discharging device 400 and is discharged from the discharging port of the discharging device 400.

[0064] In this solution, the discharge device 400 includes a volute, the inlet of the volute is connected to the outlet preset in the middle of the top plate 110, and the center line of the discharge port of the volute is perpendicular to the center line of the inlet.

[0065] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 5The tower membrane impurity separation device provided in this embodiment further includes an impurity removal device 600, which includes an impurity removal air shutoff device 610, a first spiral conveying mechanism 620 and an impurity removal conveying channel 630;

[0066] Among them, the impurity exhaust air shut-off device 610 is a shell with upper and lower openings and closed on all sides. The upper inlet of the impurity exhaust air shut-off device 610 is connected to the preset impurity exhaust port on the bottom plate 120 corresponding to the inner tower body 210, and the lower outlet of the impurity exhaust air shut-off device 610 is connected to one end of the impurity exhaust conveying channel 630. The first spiral conveying mechanism 620 is arranged in the impurity exhaust conveying channel 630 for discharging impurities. It should be noted that the first spiral conveying mechanism 620 is a bolt conveyor in the prior art, so its structure and principle will no longer be described in this embodiment.

[0067] During use, under the action of the air flow sent into the first space 240 by the air supply device 500, the cotton stalks and cotton are heavier than the residual film, so they fall to the bottom plate 120 at the bottom of the lower layer of the first space 240, pass through the impurity discharge port and the impurity discharge air shut-off device 610, and are discharged to the outside of the tower-type membrane impurity separation device through the first spiral conveying mechanism 620 and the impurity discharge conveying channel 630.

[0068] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 6 The tower membrane impurity separation device provided in this embodiment further includes at least one soil discharge device 700, which includes a soil discharge air shutoff device 710, a second spiral conveying mechanism 720 and a soil discharge conveying channel 730;

[0069] The soil discharge air lock 710 is a housing with upper and lower openings and a closed perimeter. The inlet of the soil discharge air lock 710 communicates with a pre-set soil discharge port on the bottom plate 120 corresponding to the bottom of the second space 250. The outlet of the soil discharge air lock 710 is connected to one end of the soil discharge conveying channel 730. The second screw conveying mechanism 720 is disposed within the soil discharge conveying channel 730 to discharge soil and debris. It should be noted that the second screw conveying mechanism 720 is a bolt conveyor known in the prior art, and therefore its structure and principle will not be further described in this embodiment.

[0070] During use, under the action of airflow, dirt and dust pass through a number of through holes 211 provided on the side wall of the inner tower body 210 and enter the second space 250. Under the action of gravity, the dirt and dust fall down, pass through the soil discharge port and the soil discharge air shut-off device 710 in turn, and are discharged to the outside of the tower membrane impurity separation device through the second spiral conveying mechanism 720 and the soil discharge conveying channel 730.

[0071] In addition, the tower membrane impurity separation device provided in this embodiment also includes a plurality of reinforcing columns 800, which are welded to the outside of the multi-layer outer tower body 220 and are used to connect and fix the multi-layer outer tower body 220 to improve the overall structural strength. Of course, the reinforcing columns 800 can also be connected to the outside of the multi-layer outer tower body 220 by bolt connection, which is convenient for disassembly, and this also makes it more convenient for the maintenance of the tower body.

[0072] In summary, this embodiment provides a tower-type membrane impurity separation device, which is mainly used to separate the recovered residual film and remove impurities such as straw, soil, cotton, etc. mixed inside. The residual film separation efficiency is high and the cleanliness level is high. The separated residual film can be directly used for cleaning and granulation, further improving the resource utilization efficiency of the residual film.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tower membrane impurity separation device, characterized in that: It includes a base, a plurality of separation components, a feeding device, a discharging device and an air supply device; Multiple separation assemblies are stacked on the base from bottom to top to form a tower structure, wherein the top of the separation assembly on the uppermost layer is sealed by a top plate, and the bottom of the separation assembly on the lowermost layer is sealed by a bottom plate; the separation assembly includes an inner tower body, an outer tower body and a first connecting member; The inner tower body is fixed to the inside of the outer tower body through a plurality of first connecting members, and the interiors of the plurality of inner tower bodies are enclosed along the height direction to form a first space, and the plurality of inner tower bodies and the plurality of outer tower bodies are enclosed along the height direction to form a second space, and the side wall of the inner tower body is provided with a plurality of through holes of a preset diameter to connect the first space and the second space; wherein, The feeding device is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through a feeding pipe, and is used to feed the membrane impurities into the bottom area of the first space; The air supply device is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through the air supply pipe group, and is used to send air flow into the bottom area of the first space to separate the membrane impurities under the action of the air flow; The discharging device is arranged on the top plate, and the inlet of the discharging device is communicated with the top of the first space for discharging the residual film.

2. The tower membrane impurity separation device according to claim 1, characterized in that: The inner tower body is in a polygonal structure or a cylindrical structure.

3. The tower membrane impurity separation device according to claim 2, characterized in that: The outer tower body is in a polygonal structure or a cylindrical structure, and the shape of the outer tower body matches that of the inner tower body.

4. The tower membrane impurity separation device according to claim 1, characterized in that: The feeding device includes a feeding fan, a feeding drive motor and a feeding transmission assembly; Among them, the discharge end of the feeding fan is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body through the feeding pipe, and the feeding drive motor is connected to the transmission shaft of the feeding fan through the transmission assembly to drive the feeding fan to operate.

5. The tower membrane impurity separation device according to claim 1, characterized in that: The air supply device includes an air supply fan, a pipe joint, an air supply drive motor and an air supply transmission assembly; The air outlet of the air supply fan is connected to the air supply pipe group through a pipe joint, and the air supply drive motor is connected to the drive shaft of the air supply fan through an air supply transmission assembly to drive the air supply fan to operate.

6. The tower membrane impurity separation device according to claim 5, characterized in that: The pipe joint adopts a multi-pipe joint, and the air supply pipe group includes multiple air supply ducts. The air inlet of each air supply duct is connected to the interface of the multi-pipe joint, and the air outlet of each air supply duct is connected to the bottom plate and / or side wall corresponding to the bottom of the inner tower body, which is used to send airflow into the first space.

7. The tower membrane impurity separation device according to claim 1, characterized in that: The discharging device includes a volute, and the inlet of the volute is connected to the outlet preset in the middle of the top plate.

8. The tower membrane impurity separation device according to claim 1, characterized in that: It also includes a debris removal device, which includes a debris removal air shutoff device, a first spiral conveying mechanism and a debris removal conveying channel; The inlet of the impurity exhaust air shutoff device is connected to the impurity exhaust port preset on the bottom plate corresponding to the inner tower body, and the outlet of the impurity exhaust air shutoff device is connected to one end of the impurity exhaust conveying channel. The first spiral conveying mechanism is arranged in the impurity exhaust conveying channel for discharging impurities.

9. The tower membrane impurity separation device according to claim 1, characterized in that: The invention also includes at least one soil discharge device, wherein the soil discharge device includes a soil discharge air shutoff device, a second screw conveying mechanism and a soil discharge conveying channel; The inlet of the soil discharge air shutoff device is connected to the soil discharge port preset on the bottom plate corresponding to the bottom of the second space, and the outlet of the soil discharge air shutoff device is connected to one end of the soil discharge conveying channel. The second spiral conveying mechanism is arranged in the soil discharge conveying channel for discharging soil and debris.

10. The tower membrane impurity separation device according to claim 1, characterized in that: It also includes a plurality of reinforcement columns, which are arranged outside the multi-layer outer tower body and are used to connect and fix the multi-layer outer tower body.

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