Filter capable of controlling automatic running and automatic cleaning of mesh belt by pressure

Abstract

The utility model belongs to the technical field of screen changers, and relates to a filter capable of controlling a screen belt to automatically walk and automatically clean by pressure, which comprises a machine head and an annular filter screen belt, a filter cartridge is rotatably arranged in the machine head, a screen belt rotating drum is rotatably arranged on one side of the machine head, and the filter screen belt rotating drum is arranged on the other side of the machine head. The filtering net belt is wound on the filtering cylinder and the net belt rotating cylinder and rotates circularly, and the filtering net belt is sequentially provided with a heating device for melting attachments and a pressure difference device for removing the attachments in the conveying direction. According to the filter capable of controlling the mesh belt to automatically move and automatically clean by pressure, attachments on the filter mesh belt can be better removed.

Description

Technical Field

[0001] This utility model belongs to the technical field of screen changers, and relates to a filter that uses pressure control to automatically move and clean the mesh belt. Background Technology

[0002] A rotary screen changer is a common type of screen changer. Its structure generally includes a head unit, inside which a drive unit rotates a filter cylinder, which is covered by a filter screen. During filtration, material enters the head unit through the feed inlet, then passes through the filter screen and filter cylinder before entering the inner cavity of the filter cylinder, and finally exits through the discharge outlet. Over time, impurities will accumulate on the filter screen, requiring replacement to maintain filtration efficiency.

[0003] The applicant's prior application relates to a circulating mesh belt type non-pulsating filter screen, including a machine head and an annular filter mesh belt. The machine head is provided with a filter cylinder driven to rotate by a power device. The filter mesh belt rotates synchronously with the filter cylinder. A mesh belt mounting seat is provided on one side of the machine head. A mesh belt rotating drum is rotatably mounted on the mesh belt mounting seat. The filter mesh belt includes a filter section wound on the filter cylinder, a tension section wound on the mesh belt rotating drum, and a cleaning section between the filter section and the tension section. A cleaning device is correspondingly provided for the cleaning section of the filter mesh belt.

[0004] In the aforementioned filter conveyor system, several cleaning devices are provided. One is a cleaning machine, whose nozzle is positioned opposite the cleaning section of the filter belt. Another is an ultrasonic cleaning device, through which the cleaning section of the filter belt passes during its cyclical transport. However, in actual use, it has been found that the cleaning effect of these devices is not ideal. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a filter that uses pressure control to automatically move and clean the mesh belt, thereby better removing deposits from the filter mesh belt.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A pressure-controlled automatic conveyor belt cleaning filter includes a head and an annular filter belt. A filter cylinder is rotatably installed inside the head, and a conveyor belt drum is rotatably installed on one side of the head. The filter belt is wound around the filter cylinder and the conveyor belt drum and rotates cyclically. The filter belt is sequentially equipped with a heating device for melting deposits and a pressure differential device for removing deposits along the conveying direction.

[0008] In the aforementioned filter with pressure-controlled automatic conveyor belt cleaning, the heating device is an electric heater, comprising a heating housing and an electric heating tube disposed within the heating housing. The filter belt passes through the heating housing and is heated by the electric heating tube.

[0009] In the aforementioned filter with pressure-controlled automatic conveyor belt cleaning, further, the electric heating tubes comprise multiple tubes distributed in two layers, and the filter belt passes between the upper and lower electric heating tubes.

[0010] In the aforementioned filter that uses pressure-controlled automatic conveyor belt for automatic cleaning, preferably, the heating temperature of the heating device is greater than 300°C.

[0011] In the aforementioned filter that uses pressure-controlled automatic conveyor belt for automatic cleaning, the heating device can also be other devices, such as a fuel-powered combustion heater.

[0012] In the aforementioned filter that uses pressure control for automatic conveyor belt feeding and cleaning, the conveyor belt drum is connected to a first motor, and the filter cylinder is connected to a second motor. When the conveyor belt drum and the filter cylinder rotate, they drive the filter conveyor belt to be conveyed synchronously.

[0013] In the above-mentioned filter with automatic belt movement and cleaning controlled by pressure, the differential pressure device is a fan. The fan is located on one side of the mesh belt drum and communicates with the inner cavity of the mesh belt drum. The mesh belt drum is provided with several air ducts that guide the air to the filter mesh belt.

[0014] In the above-mentioned filter with pressure-controlled automatic conveyor belt movement and automatic cleaning, the air duct is evenly arranged circumferentially on the conveyor belt drum, and a baffle plate is provided on the side of the conveyor belt drum near the machine head, the baffle plate covering the area of ​​the conveyor belt drum that does not contact the filter mesh belt.

[0015] In the aforementioned filter that uses pressure control for automatic conveyor belt movement and cleaning, the differential pressure device can also be a suction device capable of creating negative pressure, which sucks away the deposits on the filter conveyor belt.

[0016] In the above-mentioned filter with pressure-controlled automatic conveyor belt cleaning, the output shaft of the first motor is connected to the input shaft of the transmission box. The output shaft of the transmission box is a hollow shaft that connects the air outlet of the fan to the inner cavity of the conveyor belt drum. One end of the shaft is rotatably connected to the air outlet of the fan, and the other end is connected to the conveyor belt drum.

[0017] In the above-mentioned filter with pressure-controlled automatic conveyor belt and automatic cleaning, the filter conveyor belt is provided with a pair of guide rollers and a tension roller. The guide rollers are located at one end near the machine head and are respectively located on the upper and lower sides of the filter conveyor belt. The tension roller is located between the guide rollers and the conveyor belt drum and is adjusted by sliding vertically.

[0018] In the above-mentioned filter with automatic pressure-controlled conveyor belt feeding and cleaning, a mounting plate is provided on one side of the filter conveyor belt, and the conveyor belt drum, heating device, transmission box, guide roller and tension roller are all mounted on the mounting plate.

[0019] In the aforementioned filter with pressure-controlled automatic conveyor belt and automatic cleaning, the head is provided with a feed channel communicating with the feed inlet. The feed channel surrounds the outside of the filter mesh belt, and the feed channel is distributed in a spiral shape with the material passing area gradually decreasing along the conveying direction of the filter mesh belt.

[0020] In the above-mentioned filter with automatic belt feeding and cleaning controlled by pressure, a water cooling device is provided at the inlet and outlet of the filter belt; preferably, the water cooling device is an adjustable temperature water cooling device.

[0021] 1. Compared with the prior art, this utility model has the following beneficial effects: This utility model provides a filter that automatically cleans itself by controlling the conveyor belt with pressure. It uses a heating device and a blowing device. First, the heating device melts the deposits on the filter conveyor belt, and then the blowing device removes the melted deposits. Furthermore, this utility model sets the air duct on the conveyor belt drum, so that when the filter conveyor belt rotates to the corresponding position on the drum, the deposits can be easily removed.

[0022] 2. This utility model has a spiral feeding channel inside the machine head. When the material enters the machine head and flows along the feeding channel, it will push the filter belt to move along its conveying direction to assist the conveying of the filter belt and make it smoother.

[0023] 3. This utility model is equipped with a water cooling device at the inlet and outlet of the filter belt. By cooling the material at the inlet and outlet of the machine head, the leakage of molten material inside the machine head through the filter belt inlet and outlet can be prevented. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Reference numerals: 1. Machine head; 2. Filter belt; 3. Filter cylinder; 4. Belt drum; 5. Heating shell; 6. Electric heating tube; 7. First motor; 8. Second motor; 9. Fan; 10. Air duct; 11. Baffle plate; 12. Transmission box; 13. Guide roller; 14. Tensioning roller; 15. Feed inlet; 16. Feed channel; 17. Water cooling device; 18. Mounting plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 :

[0028] A pressure-controlled automatic conveyor belt cleaning filter includes a head 1 and an annular filter belt 2. A filter cylinder 3 is rotatably installed inside the head 1, and a mesh belt drum 4 is rotatably installed on one side of the head 1. The filter belt 2 is wound around the filter cylinder 3 and the mesh belt drum 4 and rotates cyclically. The filter belt 2 is sequentially equipped with a heating device for melting deposits and a pressure differential device for removing deposits along the conveying direction.

[0029] Comparison Appendix Figure 1 and attached Figure 2 In this embodiment, the rotation of the filter cylinder 3 and the mesh belt drum 4 drives the filter mesh belt 2 to achieve automatic conveying. This embodiment also achieves automatic cleaning of the filter mesh belt 2 through the cooperation of a heating device and a differential pressure device. Specifically, the power unit drives the filter cylinder 3 and the mesh belt drum 4 to rotate. The friction between the filter cylinder 3, the mesh belt drum 4, and the filter mesh belt 2 causes the filter mesh belt 2 to rotate synchronously. When the filter mesh belt 2 is inside the head 1, it filters impurities in the material and causes the impurities to adhere to the filter mesh belt 2. The material then circulates out of the head 1. The heating device heats and melts the adhering substances on the filter mesh belt 2, allowing them to easily detach from the filter mesh belt 2. Then, a differential pressure device generates a pressure difference, causing the adhering substances to detach from the filter mesh belt 2, thus removing the impurities. The material then re-enters the head 1 to filter impurities again. The method of filtering impurities is the same as that used in equipment in the field: the material enters through the inlet of the head 1, passes through the filter mesh belt 2 and the filter cylinder 3 in sequence, enters the filter chamber, and then exits through the material outlet into the head 1 outlet.

[0030] In this embodiment, the heating device is an electric heater, including a heating housing 5 and an electric heating tube 6 disposed inside the heating housing 5. The filter belt 2 passes through the heating housing 5 and is heated by the electric heating tube 6.

[0031] Furthermore, the electric heating tubes 6 include multiple tubes arranged in two layers, and the filter belt 2 passes between the upper and lower electric heating tubes 6. By heating the upper and lower electric heating tubes 6 simultaneously, a better heating effect can be obtained.

[0032] The deposits (including materials and impurities carried out from the head unit 1) on the filter belt 2 are heated to melt by electric heating. In this embodiment, the heating temperature is greater than 300°C. Even if there are unmelted impurities, they will lose their basis for adhesion after the materials and most impurities melt. The bonding strength between the melted deposits and the filter belt 2 is reduced, making them easy to remove by the differential pressure device in the next step.

[0033] In this embodiment, the differential pressure device is a fan 9, which is located on one side of the mesh belt rotating drum 4 and communicates with the inner cavity of the mesh belt rotating drum 4. The mesh belt rotating drum 4 is provided with several air ducts 10 to guide the air to the filter mesh belt 2. The high-pressure airflow generated by the fan 9 enters the inner cavity of the mesh belt rotating drum 4, and then is guided to the filter mesh belt 2 through the air ducts 10. The high-pressure airflow creates a pressure difference between the inner and outer sides of the filter mesh belt 2. The melted deposits move with the high-pressure airflow to the low-pressure side, i.e., the outer side, and detach from the filter mesh belt 2.

[0034] Furthermore, the air duct 10 is evenly arranged circumferentially on the mesh belt drum 4, and a baffle plate 11 is provided on the side of the mesh belt drum 4 near the machine head 1. The baffle plate 11 covers the area of ​​the mesh belt drum 4 that does not contact the filter mesh belt 2. By setting the baffle plate 11, it can be ensured that the high-pressure airflow flows to the filter mesh belt 2 wrapped around the mesh belt drum 4 to remove impurities, and does not flow to other ineffective areas such as the machine head 1.

[0035] The specific driving structure of this embodiment is as follows: the mesh belt drum 4 is connected to the first motor 7, the filter cylinder 3 is connected to the second motor 8, and the mesh belt drum 4 and the filter cylinder 3 drive the filter mesh belt 2 to be conveyed synchronously when they rotate.

[0036] In order to guide the air from the fan 9 smoothly to the mesh belt drum 4 without affecting the transmission structure of the mesh belt drum 4, the output shaft of the first motor 7 is connected to the input shaft of the transmission box 12. The output shaft of the transmission box 12 is a hollow shaft that connects the air outlet of the fan 9 to the inner cavity of the mesh belt drum 4. One end of the shaft is rotatably connected to the air outlet of the fan 9, and the other end is connected to the mesh belt drum 4. After being driven by the transmission box 12, the first motor 7 drives the mesh belt drum 4 to rotate. The high-pressure airflow generated by the fan 9 enters the inner cavity of the mesh belt drum 4 after passing through the hollow shaft.

[0037] To ensure smooth conveying of the filter belt 2, a pair of guide rollers 13 and a tension roller 14 are provided on the filter belt 2. The guide rollers 13 are located near the head 1 and on the upper and lower sides of the filter belt 2, respectively. The tension roller 14 is located between the guide rollers 13 and the belt drum 4 and slides vertically for adjustment. Specifically, the upper guide roller 13 is in contact with the upper side of the upper filter belt 2, and the lower guide roller 13 is in contact with the lower side of the lower filter belt 2. The tension roller 14 is located below the heating device and in contact with the upper side of the lower filter belt 2. The tension roller 14 is slidably arranged in a vertical groove. An adjusting bolt is provided above the tension roller 14 to drive its movement. After adjustment, the tension roller 14 is locked by a fastening bolt.

[0038] For ease of installation, a mounting plate 18 is provided on one side of the filter belt 2, and the belt drum 4, heating device, transmission box 12, guide roller 13 and tension roller 14 are all mounted on the mounting plate 18.

[0039] The aforementioned machine head 1 is provided with a feeding channel 16 communicating with the feed inlet 15. The feeding channel 16 surrounds the outside of the filter belt 2, and the feeding channel 16 is spirally distributed with the material passing through area gradually decreasing along the conveying direction of the filter belt 2. The molten material entering through the feed inlet 15 acts on the filter belt 2 during its flow in the feeding channel 16, generating a force that pushes the filter belt 2 to convey material, thus compensating for the insufficient driving force of the filter belt 2.

[0040] A water cooling device 17 is provided at the inlet and outlet positions of the filter belt 2 at the machine head 1; preferably, the water cooling device 17 is an adjustable temperature water cooling device. Cooling the material at the inlet and outlet of the machine head 1 by the water cooling device 17 can prevent the molten material inside the machine head 1 from leaking through the inlet and outlet of the filter belt 2. The temperature of the water cooling device 17 should be such that it can impede the outflow of material from the machine head without affecting the conveying of the filter belt 2.

[0041] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A filter with automatic conveyor belt feeding and cleaning controlled by pressure, comprising a head (1) and an annular filter belt (2), wherein a filter cylinder (3) is rotatably disposed inside the head (1), and a mesh belt drum (4) is rotatably disposed on one side of the head (1), and the filter belt (2) is wound around the filter cylinder (3) and the mesh belt drum (4) and rotates cyclically, characterized in that, The filter screen belt (2) is sequentially provided with a heating device for melting the attached matters and a pressure difference device for removing the attached matters along the conveying direction.

2. The filter according to claim 1, wherein, The heating device is an electric heater, which comprises a heating shell (5) and an electric heating pipe (6) arranged in the heating shell (5), and the filter screen belt (2) passes through the heating shell (5) and is heated by the electric heating pipe (6).

3. The filter according to claim 2, wherein, The electric heating pipe (6) comprises a plurality of pipes and is arranged in two layers, and the filter screen belt (2) passes through the electric heating pipe (6) between the upper electric heating pipe (6) and the lower electric heating pipe (6).

4. The filter of claim 1, wherein, The screen belt drum (4) is drivingly connected with a first motor (7), the filter drum (3) is drivingly connected with a second motor (8), and the screen belt drum (4) and the filter drum (3) drive the filter screen belt (2) to be synchronously conveyed when rotating.

5. The filter according to claim 4, wherein, The pressure difference device is a fan (9), which is arranged on one side of the screen belt drum (4) and communicates with the inner cavity of the screen belt drum (4), and a plurality of air ducts (10) for guiding air to the filter screen belt (2) are arranged in the screen belt drum (4).

6. The filter according to claim 5, wherein, The air ducts (10) are uniformly arranged on the screen belt drum (4) in the circumferential direction, a wind baffle (11) is arranged on the side of the screen belt drum (4) close to the machine head (1), and the wind baffle (11) covers the area of the screen belt drum (4) which does not contact the filter screen belt (2).

7. The filter of claim 5, wherein, The output shaft of the first motor (7) is drivingly connected with the input shaft of a transmission box (12), the output shaft of the transmission box (12) is a hollow shaft and communicates the air outlet of the fan (9) with the inner cavity of the screen belt drum (4), one end of the hollow shaft is drivingly connected with the air outlet of the fan (9), and the other end is drivingly connected with the screen belt drum (4).

8. The filter of claim 1, wherein, A pair of guide rollers (13) and a tensioning roller (14) are arranged corresponding to the filter screen belt (2), the guide rollers (13) are arranged on the upper and lower sides of the filter screen belt (2) close to the machine head (1), and the tensioning roller (14) is arranged between the guide rollers (13) and the screen belt drum (4) and is adjusted along the vertical direction.

9. The filter of claim 1, wherein, A feeding channel (16) which communicates with a feeding port (15) is arranged in the machine head (1), the feeding channel (16) surrounds the outside of the filter screen belt (2), and the feeding channel (16) is arranged in a spiral line and gradually reduces the feeding area along the conveying direction of the filter screen belt (2).

10. The filter of claim 1, wherein, A water cooling device (17) is arranged at the position where the filter screen belt (2) enters and exits the machine head (1).

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