A filter cloth slag removal device

Abstract

The application relates to the field of filter equipment, and discloses a filter cloth residue removing device, which comprises a motor, a roller, an air cylinder, a filter residue separating device, a conveyor, filter cloth, a controller, a water quality detection device and a timing device. The roller comprises an upper roller, a first lower roller and a second lower roller, the upper roller, the first lower roller and the second lower roller are fixed in parallel on the side wall at the bottom of the primary sedimentation tank, the air cylinder is arranged outside the upper roller, the motor is electrically connected with the upper roller, the filter cloth is sleeved outside the roller, the filter residue separating device comprises a residue scraping plate, the residue scraping plate is tightly attached to the filter cloth, is fixed on the inner wall of the primary sedimentation tank and is inclined to the right and downward relative to the filter cloth, the conveyor is connected with the outlet at the bottom of the residue scraping plate, the water quality detection device, the timing device and the motor are electrically connected with the controller, and the application further comprises a memory for storing the data obtained by the water quality detection device and the timing device. The application can solve the problem that the existing technology is prone to blockage when conveying solid suspensions and improve the residue removing efficiency of the filter cloth in the primary sedimentation tank.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filter equipment, in particular to a filter cloth residue removal device. BACKGROUND

[0002] The primary sedimentation tank is a structure for wastewater treatment, which is generally arranged after the grit chamber and before the aeration tank in the wastewater treatment plant. The primary sedimentation tank mainly removes the solid suspended particles with large density in the wastewater to reduce the organic load of the biological treatment and improve the activity of the microorganisms in the activated sludge. The primary sedimentation tank is also used to flocculate the fine solids into larger particles, to strengthen the solid-liquid separation effect, and to adsorb and remove colloidal substances. To some extent, the primary sedimentation tank also has a homogenizing effect on the water quality to some extent, which reduces the impact of water quality changes on the subsequent biochemical system. Some wastewater treatment process systems return part of the secondary sedimentation tank sludge to the primary sedimentation tank to play the biological flocculation role of the secondary sedimentation tank sludge, adsorb more dissolved and colloidal organic matter, and improve the removal efficiency of the primary sedimentation tank. The primary sedimentation tank plays a key role in wastewater treatment, and the filter cloth residue removal device is the main decontamination device in the primary sedimentation tank. In the prior art, the filter cloth is driven to move in the primary sedimentation tank by a motor, the suspended matter is attached to the filter cloth, and the suspended matter on the filter cloth is scraped off by a scraper, thereby achieving the removal of the suspended matter.

[0003] However, the existing filter cloth residue removal device has the following problems:

[0004] 1. The working time of the filter cloth residue removal device is usually determined according to experience, and the residue removal accuracy is low; 2. The filter cloth is soft, and when the filter residue removal device scrapes the filter cloth, the contact surface is unevenly stressed, and the scraping efficiency is low; 3. When conveying the solid suspended matter, the conveyor adopts a blowing method. When the solid suspended matter coagulates into large blocks and adheres to the conveyor wall, the power provided by the blowing cannot convey the solid suspended matter any more, which is prone to blockage, thereby affecting the residue removal efficiency.

[0005] Therefore, how to solve the above problems and improve the efficiency of filter cloth residue removal in the primary sedimentation tank has become a problem to be solved. SUMMARY

[0006] The present application aims to provide a filter cloth residue removal device to solve the problem of blockage when conveying the solid suspended matter in the prior art and improve the efficiency of filter cloth residue removal in the primary sedimentation tank.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] The filter cloth residue removal device comprises a motor, a roller, an air cylinder, a residue removal device, a conveyor, a filter cloth, a controller, a water quality detection device, a timing device, the roller comprises an upper roller and a lower roller, the lower roller comprises a first lower roller and a second lower roller, the first lower roller and the second lower roller are fixed in parallel on the side wall near the bottom of the primary sedimentation tank according to actual requirements, the upper roller is fixed on the side wall near the water surface of the primary sedimentation tank in parallel with the lower roller according to the actual height of the primary sedimentation tank, the horizontal plane where the second lower roller is located forms an obtuse angle with the plane where the upper roller and the second lower roller are located, and the air cylinder is arranged outside the upper roller; the motor is in electrical connection with the upper roller; the filter cloth is sleeved outside the roller, the residue removal device comprises a residue scraping plate, the residue scraping plate is in close contact with the filter cloth, is arranged between the upper roller and the second lower roller and is inclined to the right and downward relative to the filter cloth, the residue scraping plate is fixed on the inner wall of the primary sedimentation tank, the conveyor is connected with the outlet at the bottom of the residue scraping plate, the water quality detection device, the timing device and the motor are in electrical connection with the controller; and the device further comprises a memory for storing the water quality data obtained by the water quality detection device and the time data obtained by the timing device.

[0009] The principle and advantages of the present application are as follows: in actual application, the motor drives the upper roller to rotate, the filter cloth is sleeved outside the roller, and the filter cloth rotates around the upper roller and the lower roller under the drive of the upper roller; since the filter cloth needs to completely adhere to the roller to operate efficiently, on the other hand, the filter cloth needs to be loosened when it is replaced, therefore, the air cylinder is arranged outside the upper roller, which not only provides tension to the filter cloth and improves the working efficiency of the filter cloth, but also loosens the filter cloth when it is replaced, thereby reducing the difficulty of replacing the filter cloth.

[0010] The horizontal plane where the second lower roller is located forms an obtuse angle with the plane where the upper roller and the second lower roller are located, which is beneficial to the residue scraping plate to scrape off the solid suspended matter on the filter cloth; the water flow with the solid suspended matter moves from the first lower roller to the second lower roller, the solid suspended matter adheres to the filter cloth, the motor drives the upper roller to move around the second lower roller, the residue scraping plate is in close contact with the filter cloth, is arranged between the upper roller and the second lower roller and is inclined to the right and downward relative to the filter cloth, for scraping off the solid suspended matter adhered to the filter cloth, and the conveyor is connected with the bottom of the residue scraping plate, for collecting and conveying the scraped solid suspended matter to a designated position.

[0011] The water quality detection device, the timing device and the motor are in electrical connection with the controller, since the primary sedimentation tank also has a certain homogenization effect on water quality, the water quality detection device detects the water quality in the primary sedimentation tank in real time, when the water quality reaches the threshold value of residue removal, the controller controls the motor to be turned off, so as to avoid incomplete residue removal or continue working after complete residue removal and waste resources; the timing device times the time of each residue removal, and the water quality data obtained by the water quality detection device and the time data obtained by the timing device are stored in the memory, which is convenient for subsequent analysis of the working law of the filter cloth residue removal device.

[0012] Preferably, as an improvement, it further comprises an alarm device which gives a warning when the water quality does not change within a threshold time.

[0013] The controller is further configured to control the motor to be turned off when the water quality does not change within a threshold time.

[0014] Technical effects: When the filter cloth residue removal device fails, such as internal blockage of the conveyor, loose filter cloth, etc., it will cause the residue removal work to stop. In order to avoid the motor continuing to work when a failure occurs, causing resource waste, the alarm device gives a warning when the water quality does not change within a threshold time, reminding the management personnel to maintain in time, and the controller controls the motor to be turned off.

[0015] Preferably, as an improvement, a channel is formed in the middle of the residue scraping plate in the direction intersecting with the filter cloth.

[0016] Technical effects: The solid suspended matter scraped off by the residue scraping plate flows out from the channel, and the channel plays a certain isolation role for the solid suspended matter and water, reducing the risk of the solid suspended matter floating into the water again, thereby improving the residue removal efficiency.

[0017] Preferably, as an improvement, a scraping strip is arranged on the inner wall of the channel, one end of the scraping strip is fixed and connected with the controller in power, and the controller controls the scraping strip to swing.

[0018] Technical effects: When the water quality does not change within a threshold time, the controller controls the scraping strip to swing, cleaning the channel, and avoiding affecting the normal work of the filter cloth residue removal device due to channel blockage.

[0019] Preferably, as an improvement, the filter cloth is made of nylon material.

[0020] Technical effects: The wear resistance of nylon material is higher than that of all other fibers, and the elastic recovery rate is high; it can withstand tens of thousands of folds without breaking, and can prolong the service life when used as a filter cloth.

[0021] Preferably, as an improvement, the filter cloth further comprises a hard layer, and the hard layer is a stainless steel mesh.

[0022] Technical effects: The filter cloth material is relatively soft, and the contact surface is unevenly stressed when the filter cloth residue removal device is scraping, and the scraping efficiency is low. The stainless steel mesh is corrosion-resistant, wear-resistant, and has a certain hardness, which supports the filter cloth and is beneficial to the efficient scraping of the solid suspended matter on the filter cloth by the residue scraping plate.

[0023] Preferably, as an improvement, the length of the residue scraping plate is 5 cm wider than the width of the filter cloth.

[0024] Technical effects: It can scrape off the solid suspended matter on the filter cloth comprehensively and prevent residue leakage.

[0025] Preferably, as an improvement, the obtuse angle is between 95° and 115°.

[0026] Technical effects: It is beneficial for the slag scraper to scrape the solid suspension on the filter cloth.

[0027] Preferably, as an improvement, the conveyor is a GX type pipe screw conveyor.

[0028] Technical effects: The GX type screw conveyor uses a rotating screw to push the conveyed material along the fixed shell for conveying work. When conveying the collected solid suspension, it can prevent the internal blockage of the conveyor and has high conveying efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural diagram of a filter cloth slag removal device. DETAILED DESCRIPTION

[0030] The present application will be described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar components or components having the same or similar functions throughout. In addition, if a detailed description of known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below by reference to the accompanying drawings are exemplary and are only for the purpose of explaining the present application and cannot be interpreted as a limitation on the present application.

[0031] Those skilled in the art can understand that the orientation terms "up", "down", "left", "right" and "lower right" used herein are only used to explain the present application and cannot be interpreted as a limitation on the present application.

[0032] The specific embodiments will be described in further detail below:

[0033] The reference numerals in the drawings of the specification include: filter cloth 1, first lower roller 2, motor 3, upper roller 4, air cylinder 5, slag scraper 6, conveyor 7, second lower roller 8.

[0034] The embodiments are substantially as shown in the accompanying drawings: Figure 1

[0035] A filter cloth slag removal device, comprising: a motor 3, a roller, an air cylinder 5, a filter slag separation device, a conveyor 7, a filter cloth 1, a controller, a water quality detection device, a timing device, the roller comprises an upper roller 4 and a lower roller, the lower roller comprises a first lower roller 2 and a second lower roller 8, the first lower roller 2 and the second lower roller 8 are fixed in parallel on the side wall near the bottom of the primary sedimentation tank according to actual needs, and the upper roller 4 is fixed in parallel with the lower roller on the side wall near the water surface of the primary sedimentation tank according to the actual height of the primary sedimentation tank.

[0036] ​The horizontal plane where the second lower roller 8 is located forms an obtuse angle with the plane where the upper roller 4 and the second lower roller 8 are located, and the obtuse angle is between 95° and 115°, which is beneficial to the filter residue detachment device to scrape off the solid suspended matter on the filter cloth 1; when the obtuse angle is too large, the solid suspended matter is prone to falling under the action of gravity and re-mixing into water; when the obtuse angle is too small, the effect of the filter residue detachment device on the solid suspended matter on the filter cloth 1 is small, so the obtuse angle is set to be between 95° and 115°.

[0037] The upper roller 4 is externally provided with a gas cylinder 5; since the filter cloth 1 needs to be completely attached to the roller to operate efficiently, on the other hand, the filter cloth 1 needs to be loosened when the filter cloth 1 is replaced, so the gas cylinder 5 is arranged outside the upper roller 4; by controlling the expansion and contraction of the gas cylinder 5, the filter cloth 1 can be tensioned when the filter residue removal device is working, thereby improving the working efficiency of the filter cloth 1, and the filter cloth 1 can be loosened when the filter cloth 1 is replaced, thereby reducing the difficulty of replacing the filter cloth 1.

[0038] The motor 3 is in power connection with the upper roller 4; the motor 3 drives the upper roller 4 to move in the direction of the second lower roller 8; the filter cloth 1 is sleeved outside the roller; under the driving of the upper roller 4, the filter cloth 1 rotates around the upper roller 4 and the lower roller; the water flow with solid suspended matter moves from the first lower roller 2 to the second lower roller 8; the solid suspended matter adheres to the filter cloth 1 and moves to the filter residue detachment device position with the filter cloth 1; the solid suspended matter is scraped off by the filter residue detachment device.

[0039] The filter cloth 1 is made of nylon material; the wear resistance of nylon material is higher than that of all other fibers; the elastic recovery rate is high; the filter cloth 1 can withstand tens of thousands of folds without breaking; the filter cloth 1 can be used for a long time; the filter cloth 1 further comprises a hard layer; the hard layer is a stainless steel mesh; since the filter cloth 1 is soft, the contact surface is unevenly stressed when the filter residue detachment device scrapes off the filter cloth 1, and the scraping efficiency is low, so a stainless steel mesh is further arranged inside the filter cloth 1; the stainless steel mesh is corrosion-resistant and wear-resistant; the stainless steel mesh has a certain hardness and supports the filter cloth 1, thereby facilitating the filter residue detachment device to efficiently scrape off the solid suspended matter on the filter cloth 1.

[0040] The filter residue detachment device comprises a residue scraping plate 6; the residue scraping plate 6 is tightly attached to the filter cloth 1; the length of the residue scraping plate 6 is 5 cm wider than the width of the filter cloth 1; the residue scraping plate 6 can scrape off the solid suspended matter on the filter cloth 1 comprehensively and prevent residue leakage; the residue scraping plate 6 is obliquely arranged to the right and downward between the upper roller 4 and the second lower roller 8 relative to the filter cloth 1; the residue scraping plate 6 is fixed on the inner wall of the primary sedimentation tank; the middle of the residue scraping plate 6 is a channel in the direction intersecting the filter cloth 1; the solid suspended matter scraped off by the residue scraping plate 6 flows out of the channel; the channel has a certain isolation effect on the solid suspended matter and water, thereby reducing the risk of the solid suspended matter floating into water again and improving the residue removal efficiency.

[0041] The conveyor 7 is connected with the bottom of the slag scraping plate 6, the bottom of the slag scraping plate 6 is connected with the conveyor 7, the conveyor 7 is a GX type tubular screw conveyor 7, the GX type screw conveyor 7 is used for conveying the material to be conveyed by rotating the screw to move along the fixed shell, the head and tail bearings are moved out of the shell, the lifting bearing is provided with a dustproof sealing device, when the collected solid suspensions are conveyed, the internal blockage of the conveyor 7 can be prevented, and the conveying efficiency is high.

[0042] The water quality detection device, the timing device and the motor 3 are connected with the controller, the model of the controller in the application is S7 315-2DP / PN, and the model of the water quality detection device is EF-4H type portable (SS) suspended matter tester.

[0043] Since the primary sedimentation tank also has a certain homogenization effect on water quality, the water quality detection device detects the water quality in the primary sedimentation tank in real time, and when the water quality reaches the threshold value of slag removal, the controller controls the motor 3 to be turned off, so that the slag removal is not completely or the slag removal continues to work after being completely removed, and resources are wasted; the timing device times the time of each slag removal, and the water quality data obtained by the water quality detection device and the time data obtained by the timing device are stored in the storage, so that the working law of the filter cloth 1 slag removal device can be analyzed subsequently.

[0044] The alarm device is further arranged, and the alarm device issues a warning when the water quality does not change within a threshold time; the controller is further used for controlling the motor 3 to be turned off when the water quality does not change within the threshold time, and when the filter cloth 1 slag removal device fails, such as internal blockage of the conveyor 7, loosening of the filter cloth 1 and the like, the slag removal work is stalled, in order to avoid that the motor 3 continues to work when the failure occurs, resources are wasted, the alarm device issues a warning when the water quality does not change within the threshold time, reminding the management personnel to maintain in time, and the controller controls the motor 3 to be turned off. A scraping strip is arranged on the inner wall of the channel, one end of the scraping strip is fixed and connected with the controller in power, the controller controls the scraping strip to swing, the controller controls the scraping strip to swing and clean the channel when the water quality does not change within the threshold time, so that the filter cloth 1 slag removal device can normally work without being affected by the blockage of the channel.

[0045] The above is only an embodiment of the application, and common technical solutions and / or common knowledge of characteristics in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical solutions of the application, a plurality of deformations and improvements can be made, which should also be regarded as the protection scope of the application, and these will not affect the effect and practicability of the application. The protection scope claimed in the application should be subject to the content of the claims, and the specific implementation modes and the like in the description can be used to explain the content of the claims.

Claims

1. A filter cloth degritting device, characterized in that It comprises: a motor, a roller, a cylinder, a filter residue separation device, a conveyor, a filter cloth, a controller, a water quality detection device, a timing device, the roller comprises an upper roller and a lower roller, the lower roller comprises a first lower roller and a second lower roller, the first lower roller and the second lower roller are fixed in parallel on the side wall near the bottom of the primary sedimentation tank according to actual needs, the upper roller is fixed on the side wall near the water surface of the primary sedimentation tank in parallel with the lower roller according to the actual height of the primary sedimentation tank, the horizontal plane where the second lower roller is located forms an obtuse angle with the plane where the upper roller and the second lower roller are located, the outer surface of the upper roller is provided with a cylinder; the motor is in electrical connection with the upper roller; the filter cloth is sleeved on the outer surface of the roller, the filter residue separation device comprises a residue scraping plate, the residue scraping plate is in close contact with the filter cloth, is inclined downward to the right relative to the filter cloth and is arranged between the upper roller and the second lower roller, the residue scraping plate is fixed on the inner wall of the primary sedimentation tank, the conveyor is connected with the outlet at the bottom of the residue scraping plate, the conveyor is a GX type tubular screw conveyor; the water quality detection device, the timing device and the motor are in electrical connection with the controller, the controller is of S7 315-2DP / PN type, the water quality detection device is of EF-4H type portable suspended matter tester; it further comprises a memory for storing water quality data obtained by the water quality detection device and time data obtained by the timing device.

2. A cloth degritting device according to claim 1, characterised in that: It further comprises an alarm device, which issues a warning when the water quality does not change within a threshold time; The controller is further used to control the motor to be turned off when the water quality does not change within a threshold time.

3. A cloth degritting device according to claim 2, characterised in that: The middle of the residue scraping plate is a channel in the direction intersecting the filter cloth.

4. A cloth degritting device according to claim 3, characterised in that: A scraping strip is arranged on the inner wall of the channel, one end of the scraping strip is fixed and in electrical connection with the controller, and the controller controls the swinging movement of the scraping strip.

5. A cloth degritting device according to claim 4, characterised in that: The filter cloth is made of nylon material.

6. A cloth degritting device according to claim 5, characterised in that: The filter cloth further comprises a hard layer, and the hard layer is a stainless steel mesh.

7. A cloth degritting device according to claim 6, characterised in that: The length of the residue scraping plate is 5 cm wider than the width of the filter cloth.

8. A cloth degritting device according to claim 7, characterised in that: The obtuse angle is between 95° and 115°.

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