Self-cleaning device for cleaning roller screen

Abstract

The utility model relates to the technical field of cleaning treatment, in particular to a self-cleaning device for cleaning a drum screen, which comprises a gas transmission mechanism and a drum screen, the drum screen comprises a first support table, a drum screen shell and a drum screen, the drum screen shell is fixedly mounted on the first support table, and the drum screen is positioned in the drum screen shell. A gap is reserved between the drum screen mesh and the drum screen shell, and the rotary cleaning mechanism comprises a plurality of motors, a plurality of couplings and a driven hollow pipe; the motor is arranged on the first supporting table; the other end of the coupler is connected with the driven hollow pipe; the driven hollow pipe penetrates through the gap; the driven hollow pipe is communicated with the air conveying mechanism, a plurality of air injection holes are formed in the driven hollow pipe, and the air injection direction of the air injection holes faces the roller screen. According to the utility model, the manual cleaning cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning treatment, in particular to a self-cleaning device for cleaning a drum screen. Background Art

[0002] The trommel screen is a highly efficient screening device widely used in industries such as mining, chemical engineering, construction, and agriculture. The expansion of production scale and the refinement of processes have necessitated continuous improvements in the processing capacity, precision, and durability of screening equipment. Due to its simple structure, adaptability, and efficient screening capabilities, the trommel screen has become an indispensable piece of equipment in industrial production. However, when processing wet or sticky materials, the internal mesh holes of the trommel screen are prone to clogging, resulting in reduced screening efficiency. This clogging problem is particularly severe when screening materials such as clay, wet soil, or damp garbage.

[0003] In the prior art, there is a drum screening machine air self-cleaning garbage equipment with patent application number CN202110250057.7, which includes a drum screening machine body and an air cleaning system, wherein the air cleaning system is arranged on the side of the drum screening machine body and is communicated with the inside of the drum screening machine body. The air cleaning system of the equipment is in a fixed state, and the equipment can only be used to clean the screen when the drum screen is in a circular motion when the drum screen is turned on, and cannot be used for cleaning when the machine is stopped. Generally, when screening materials such as clay, wet soil or wet garbage, the adhesion between them and the screen is strong, and the use of an air cleaning system to clean the drum screen can only delay the accumulation time of the material. If it is to be thoroughly cleaned, it is also necessary to clean it after the machine is stopped. Utility Model Content

[0004] In order to achieve the purpose of solving the problem of damp objects clogging the screen in an integrated manner and reduce the cost of manual cleaning. This embodiment provides a self-cleaning device for cleaning the drum screen, including a drum screen, the drum screen including an air transmission mechanism, a first support platform, a drum screen shell and a drum screen, the drum screen shell is fixedly mounted on the first support platform, the drum screen is located in the drum screen shell, and a gap is left between the drum screen and the drum screen shell. It also includes a rotating cleaning mechanism, which includes several motors, several couplings and a driven empty pipe; the motor is arranged on the first support platform; one end of the coupling is connected to the motor, and the other end is connected to the driven empty pipe; the driven empty pipe passes through the gap; the driven empty pipe is connected to the air transmission mechanism, and a plurality of jet holes are provided on the driven empty pipe, and the jet direction of the jet holes is toward the drum screen.

[0005] Beneficial effects: Compared with the existing technology, firstly, under the control of the motor, the coupling drives the driven empty pipe to rotate in the gap, and the driven empty pipe can dynamically clean the drum screen in the drum screen, and can also clean it even when the drum screen stops running, with dynamic cleaning effect and strong flexibility.

[0006] Secondly, the motor is arranged on the first supporting platform, one end of the coupling is connected to the motor, and the other end is connected to the driven empty pipe, that is, the motor, coupling and other components are all arranged on the first supporting platform, and do not occupy the production space outside the drum screen. This makes full use of the original space on the first supporting platform, avoids additional occupation of space in other production areas, and ensures efficient operation of the production process.

[0007] In addition, the motor controls the driven empty pipe, and even after the drum screen stops / runs, the driven empty pipe can be integratedly controlled to clean the drum screen, eliminating the need for cleaners to clean manually and reducing labor costs.

[0008] Finally, it only requires the setting of motors, couplings and driven empty pipes, with a simple structure. There is no need to modify the original equipment on the production line such as the drum screen. Only the corresponding components need to be added to achieve the purpose of dynamic cleaning. Not only is the modification cost low, but the maintenance cost is also low.

[0009] Preferably, it includes 2 motors and 2 couplings; the motors include a left motor and a right motor, and the couplings include a left coupling and a right coupling; the left motor and the left coupling are located at one end of the drum screen, and the right motor and the right coupling are located at the other end of the drum screen; one end of the left coupling is connected to the left motor, and the other end is connected to one end of the driven empty pipe; one end of the right coupling is connected to the right motor, and the other end is connected to the other end of the driven empty pipe.

[0010] Beneficial Effect: The left motor and left coupling are placed on one side of the drum screen, and the right motor and right coupling are placed on the other side. One end of the driven tube is connected to the left coupling, and the other end is connected to the right coupling, and the driven tube passes through the gap of the drum screen. This is equivalent to supporting both ends of the driven tube, providing stability, preventing the driven tube from being affected by gravity and centripetal force during rotation, which could cause the driven tube to shake and collide with the drum screen.

[0011] Preferably, the rotary cleaning mechanism also includes a second support platform, the second support platform is fixedly mounted on the first support platform, the motor is fixedly mounted on the second support platform, the motor includes a motor shaft, the motor shaft is connected to a coupling, and the axis of the motor shaft passes through the center of the drum screen.

[0012] Beneficial effect: The motor is installed on the second support platform so that the axis of the motor shaft passes through the center of the drum screen. Specifically, in the existing technology, one end of the coupling is connected to the motor shaft, and the other end of the coupling is connected to the driven empty tube. The motor shaft and the driven empty tube are parallel, and their central axes are collinear. When the axis of the motor shaft passes through the center of the drum screen, it is equivalent to the motor shaft, the driven empty tube and the drum screen being concentric, so that the driven empty tube can make concentric rotation around the drum screen. That is, the motor shaft is used as the active rotation, and the driven empty tube is used as the driven rotation, and the driven empty tube can make circular motion around the center of the drum screen.

[0013] Preferably, the rotary cleaning mechanism also includes a third support platform, which is fixedly mounted on the first support platform. A support through-hole is provided on the third support platform, through which the driven empty pipe passes, and the support through-hole is gap-matched with the driven empty pipe.

[0014] Beneficial effect: During the rotation process, the driven empty pipe is easily affected by the centrifugal force and the centripetal force, causing the empty pipe to shake and collide with the drum screen, thereby hindering the normal movement of the drum screen; the driven empty pipe is supported by the support platform to stabilize the driven empty pipe, thereby avoiding the driven empty pipe from interfering with normal production.

[0015] Preferably, the third support platform is close to the coupling.

[0016] Beneficial effect: While ensuring the stability of the driven empty pipe, if it is far away from the coupling, it is easy to hinder the normal operation of the driven empty pipe. Setting the third support platform close to the coupling is equivalent to stabilizing and protecting one end of the driven empty pipe, and can also enable the driven empty pipe to operate normally.

[0017] Preferably, the driven empty pipe includes a first pipe section and a second pipe section; one end of the second pipe section is connected to the coupling, and the other end is connected to the first pipe section; the second pipe section passes through the supporting through hole, the first pipe section is located in the gap, and the second pipe section is located outside the drum screen.

[0018] Beneficial effect: the second pipe section is located outside the drum screen, the first pipe section is located inside the drum screen, and the second pipe section is used to enable the first pipe section to perform circular motion inside the drum screen, thereby stabilizing the movement of the first pipe section.

[0019] Preferably, the second pipe segment includes a first sub-pipe segment and a second sub-pipe segment; one end of the first sub-pipe segment is connected to the coupling, and the other end is connected to one end of the second sub-pipe segment, and the other end of the second sub-pipe segment is connected to the first pipe segment; the axis of the first sub-pipe segment passes through the center of the drum screen.

[0020] Beneficial effect: The axis of the first sub-tube segment passes through the center of the drum screen, so that the first tube segment can move in an arc along the center of the drum screen, ensuring that the first tube segment will not collide with the drum screen.

[0021] Preferably, the air delivery mechanism includes an air compressor and a hose, the air compressor is connected to one end of the hose, and the other end of the hose is connected to the driven air pipe.

[0022] Beneficial effect: The high-pressure air delivered by the air compressor cleans the drum screen, which can be more effective in cleaning materials such as clay, wet soil or moist garbage.

[0023] Preferably, the air compressor is fixedly mounted on the first support platform and close to the coupling.

[0024] Beneficial effect: The gas transmission mechanism is arranged on the first support platform and does not occupy the production space outside the drum screen. This makes full use of the original space on the first support platform, avoids additional occupation of space in other production areas, and ensures efficient operation of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a self-cleaning device for cleaning a drum screen according to Example 1;

[0026] Figure 2 A side view of the structure of the drum screen and the rotary cleaning mechanism of Example 1;

[0027] Figure 3 Schematic diagram of the structure of the driven air pipe in Example 1;

[0028] Figure 4 This is a front view of the drum screen of Example 1. DETAILED DESCRIPTION

[0029] The reference numerals in the drawings of the specification include:

[0030] Drum screen 1, rotary cleaning mechanism 2, second support platform 3, third support platform 4, belt conveyor 5, drum screen shell 11, drum screen 12, first support platform 13, connecting platform 14, gap 15, motor 21, coupling 22, driven empty pipe 23, motor shaft 211, first pipe section 231, second pipe section 232.

[0031] Example

[0032] This embodiment is basically as Figure 1 and Figure 2 As shown, a self-cleaning device for cleaning a drum screen 12 comprises a belt conveyor 5, a drum screen 1, a rotary cleaning mechanism 2 and an air delivery mechanism.

[0033] In the prior art, a first support platform 13 is mounted on the conveyor belt 5. A trommel screen 1 is fixedly mounted on the first support platform 13 and connected to the conveyor belt 5. The trommel screen 1 comprises two connecting platforms 14, a trommel screen housing 11, and a trommel screen 12. The trommel screen 12 is located within the trommel screen housing 11. The connecting platforms 14 are fixedly mounted on either side of the first support platform 13 and connect to the trommel screen 12, rotating the trommel screen 12. The trommel screen housing 11 is fixedly mounted on the first support platform 13. The trommel screen 12 is located within the trommel screen housing 11, with a gap 15 between the trommel screen 12 and the trommel screen housing 11. Material, transported by the conveyor belt 5, enters the trommel screen 1. The trommel screen 12 separates the material by particle size. Small particles pass through the mesh holes and fall into a collection area, while larger particles continue to move forward and are discharged at the end of the trommel screen. However, some material can stick to the mesh holes of the trommel screen 12, forming a blockage and causing the trommel screen 1 to fail and become inoperable.

[0034] Specifically, the rotary cleaning mechanism 2 includes two second support platforms 3, two motors 21, two couplings 22, a driven empty pipe 23, two third support platforms 4 and a host computer.

[0035] The second support platform 3 is fixedly mounted on the left and right ends of the first support platform 13, respectively, and is symmetrically centered around the drum screen 1. The coupling 22 includes a left coupling 22 and a right coupling 22. The coupling 22 is of the same model, but is installed in different positions. The motor 21 may include a left motor 21 and a right motor 21. The two motors 21 are of the same model, but are installed in different positions. The motor 21 includes a motor shaft 211, which serves as the output end of the motor 21. The left motor 21 is fixedly mounted on the second support platform 3 on the left side, and the right end of the motor shaft 211 of the left motor 21 is connected to one end of the left coupling 22, and the other end of the left coupling 22 is connected to one end of the driven hollow tube. The right motor 21 is fixedly mounted on the second support platform 3 on the right side, and the left end of the motor shaft 211 of the right motor 21 is connected to one end of the right coupling 22, and the other end of the right coupling 22 is connected to the other end of the driven hollow tube.

[0036] The third support platform 4 is respectively installed near the two ends of the driven hollow tube. The third support platform 4 on the left side is located on the right side of the left coupling 22, and is used to support the pipe section on the left side of the driven hollow tube 23 that is colinear with the motor shaft 211 of the left motor 21. A supporting through-hole is opened on the third support platform 4 on the left side, and the pipe section on the left side of the driven hollow tube 23 that is colinear with the motor shaft 211 of the left motor 21 passes through the supporting through-hole and cooperates with the supporting through-hole gap 15. The third support platform 4 on the right side is located on the left side of the right coupling 22, and is used to support the pipe section on the right side of the driven hollow tube 23 that is colinear with the motor shaft 211 of the right motor 21. A supporting through-hole is also opened on the third support platform 4 on the right side, and the pipe section on the right side of the driven hollow tube 23 that is colinear with the motor shaft 211 of the right motor 21 passes through the supporting through-hole and cooperates with the supporting through-hole gap 15.

[0037] like Figure 3 As shown, the driven empty pipe 23 includes a first pipe section 231 and two second pipe sections 232. The difference between the first pipe section 231 and the second pipe section 232 is that the first pipe section 231 has an air injection hole, while the second pipe section 232 has an air inlet hole. The first pipe section 231 is located between the drum screen housing 11 and the drum screen mesh 12, that is, in the gap 15 between the drum screen housing 11 and the drum screen mesh 12. The second pipe section 232 is located outside the drum screen 1, and the two second pipe sections 232 are symmetrically arranged, with the first pipe section 231 as the axis of symmetry. Specifically, one second pipe section 232 is located on the right side of the drum screen 1, and the other is located on the left side of the drum screen 1. Whether the second pipe section 232 is located on the right or left side of the drum screen 1, it includes a first sub-pipe section and a second sub-pipe section. The first sub-pipe section is collinear with the motor shaft 211. The second sub-segment is in an inverted "L" shape, with the left side of the second sub-segment being perpendicular to the first sub-segment, and the right side of the second sub-segment being collinear with the first sub-segment 231. Figure 2 The dotted line shown passing through the center of the motor shaft 211, the center of the first sub-pipe segment, the center of the drum screen housing 11, and the center of the drum screen 12 indicates that the central axis of the first sub-pipe segment passes through the center of the drum screen 1, ensuring that the driven hollow pipe 23 can move in a circular arc about the center of the drum screen 1. In this embodiment, only one air inlet is required in the portion of the second pipe segment 232 to the left of the driven hollow pipe 23 that is collinear with the motor shaft 211 of the left motor 21. The air supply mechanism includes an air compressor and a hose. The air compressor is fixedly mounted on the first support platform 13 and adjacent to the left third support platform 4. The air compressor and the air inlet are connected by a pipe, which can be a hose. Multiple air jets are evenly distributed on the first pipe segment 231. When the drum screen 12 moves in a circular motion, the air jets' jet area covers the entire drum screen 12, and the air jets face the drum screen 12.

[0038] If the air inlet is set on the first pipe section 231 or the second sub-pipe section, the hose is prone to entanglement due to the large rotation amplitude of the first pipe section 231 or the second sub-pipe section. The entanglement of the hose will not only cause squeezing, thereby blocking the air delivered by the air compressor, but also hinder the movement of the driven empty pipe 23, which is prone to industrial accidents. Therefore, the air inlet is set on the first sub-pipe section, and the air compressor is fixedly installed next to the third support platform 4. This can prevent the hose from being entangled, reduce the incidence of industrial accidents, and stably clean the drum screen 1. The upper computer is electrically connected to the left motor 21 and the right motor 21 respectively. The upper computer controls the left motor 21 and the right motor 21 to operate synchronously, and then drives the driven empty pipe 23 to make reciprocating circular arc motion around the center of the drum screen 1 through the coupling 22.

[0039] Specifically, such as Figure 4 As shown, point A is close to the left end of the left connecting platform 14, and point B is close to the right end of the right connecting platform 14. Points A and B are connected to form an arc, and arc AB is Figure 3 The arc-shaped dotted line. The center of the arc is concentric with the center of the drum screen 1, and the central angle of the arc is α, α=245°. The radius of the AB arc is larger than the radius of the drum screen 12, and smaller than the radius of the drum screen shell 11. The axis of the motor shaft 211 passes through the center of the drum screen 1, so that when the motor shaft 211 rotates, it drives the driven empty pipe 23 to rotate through the coupling 22. The driven empty pipe 23 can make repeated arc motions along the gap 15 between the drum screen shell 11 and the drum screen 12 with the arc AB as the path. The first sub-tube section of the driven empty pipe 23 moves in an arc along the AB arc to avoid collision with the connecting platform 14.

[0040] How to use this embodiment

[0041] When the drum screen 1 is running, in order to save energy, the motor 21 can be turned off, and the air compressor can work normally to deliver high-pressure air to the driven empty pipe 23, and pass through the air jet hole on the drum screen 12. At the same time, the drum screen 12 makes a circular motion to clear the blockage of the drum screen 12. After running for multiple cycles, the drum screen 1 can achieve self-cleaning. When the drum screen 1 stops running, the upper computer turns on the two motors 21 at the same time. The two motors 21 move synchronously, and the motor shaft 211 moves, driving the driven empty pipe 23 along the AB arc through the coupling 22, with the center of the drum screen 1 as the center of the circle, to make an arc motion to clean the drum screen 12 near the AB arc area. When the cleaning is completed, the uncleaned part of the drum screen 12 is rotated by the drum screen 12 so that the uncleaned part is located in the AB arc area, and then cleaned to achieve the effect of completely cleaning the drum screen 12.

[0042] In this embodiment, the integrated cleaning of the drum screen means that the drum screen can be cleaned using the solution of this embodiment regardless of whether the drum screen is in operation or out of operation.

[0043] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0044] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to 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.

[0045] It should be understood that the term "and / or" as used herein is simply a term used to describe the existence of three possible relationships between related objects. For example, "A and / or B" can represent the existence of A alone, the existence of both A and B, and the existence of B alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0046] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

[0047] The above is only an embodiment of the present utility model. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the scope of protection of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A self-cleaning device for cleaning a drum screen, comprising a drum screen, the drum screen comprising an air delivery mechanism, a first support platform, a drum screen housing, and a drum screen, wherein the drum screen housing is fixedly mounted on the first support platform, the drum screen is located within the drum screen housing, and a gap is left between the drum screen and the drum screen housing, characterized in that: It also includes a rotary cleaning mechanism, which includes a plurality of motors, a plurality of couplings and a driven empty pipe; the motor is arranged on the first support platform; One end of the coupling is connected to the motor, and the other end is connected to the driven empty pipe; the driven empty pipe passes through the gap; The driven empty pipe is connected with the gas transmission mechanism. A plurality of air jet holes are arranged on the driven empty pipe. The air jet directions of the air jet holes are toward the drum screen.

2. A self-cleaning device for cleaning a drum screen according to claim 1, characterized in that: There are two motors, namely a left motor and a right motor; there are two couplings, namely a left coupling and a right coupling; The left motor and the left coupling are located at one end of the drum screen, and the right motor and the right coupling are located at the other end of the drum screen; One end of the left coupling is connected to the left motor, and the other end is connected to one end of the driven empty pipe; one end of the right coupling is connected to the right motor, and the other end is connected to the other end of the driven empty pipe.

3. A self-cleaning device for cleaning a drum screen according to claim 2, characterized in that: The rotary cleaning mechanism also includes a second support platform, which is fixedly mounted on the first support platform. The motor is fixedly mounted on the second support platform. The motor includes a motor shaft connected to a coupling, and the axis of the motor shaft passes through the center of the drum screen.

4. A self-cleaning device for cleaning a drum screen according to claim 1, characterized in that: The rotary cleaning mechanism also includes a third support platform, which is fixedly mounted on the first support platform. A support through hole is provided on the third support platform, through which the driven empty pipe passes, and the support through hole and the driven empty pipe are in clearance fit.

5. A self-cleaning device for cleaning a drum screen according to claim 4, characterized in that: The third support platform is close to the coupling.

6. A self-cleaning device for cleaning a drum screen according to claim 4, characterized in that: The driven empty pipe includes a first pipe section and a second pipe section; one end of the second pipe section is connected to the coupling, and the other end is connected to the first pipe section; the second pipe section passes through the supporting through hole, the first pipe section is located in the gap, and the second pipe section is located outside the drum screen.

7. A self-cleaning device for cleaning a drum screen according to claim 6, characterized in that: The second pipe section includes a first sub-pipe section and a second sub-pipe section; one end of the first sub-pipe section is connected to the coupling, and the other end is connected to one end of the second sub-pipe section, and the other end of the second sub-pipe section is connected to the first pipe section; the axis of the first sub-pipe section passes through the center of the drum screen.

8. A self-cleaning device for cleaning a drum screen according to claim 1, characterized in that: The air transmission mechanism includes an air compressor and a hose. The air compressor is connected to one end of the hose, and the other end of the hose is connected to the driven air pipe.

9. A self-cleaning device for cleaning a drum screen according to claim 8, characterized in that: The air compressor is fixedly installed on the first supporting platform and close to the coupling.

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