Negative pressure net chain filter with paper feeding and slagging functions

Abstract

The utility model discloses a negative pressure net chain filter with paper running and slagging function, the utility model relates to the technical field of industrial filtering equipment, including the shell, the top of shell is provided with the filter box, and the top fixed mounting of filter box has the water inlet pipe, the below of water inlet pipe and be located the inside position department of shell is provided with the slow water box, the bottom of slow water box is provided with the orifice plate, the inside of filter box forms the upper cavity and negative pressure cavity, the top fixed mounting of shell has the fan, the front of shell is provided with pressure valve subassembly, the utility model's advantage lies in: through the integrated design of fan negative pressure suction, net chain transmission slagging, negative pressure cavity can separate the solid -liquid component in dirty liquid quickly, compared with traditional normal pressure filtering equipment, the filtration rate promotes, when negative pressure reaches the preset value, and automatic trigger paper running and slagging, need not manual slagging, and each batch can save the labor cost of filtration, and avoid the filtration interruption caused by manual operation, and adapt long time continuous industrial production demand.

Description

Technical Field

[0001] This utility model relates to the field of industrial filtration equipment technology, specifically a negative pressure mesh chain filter with paper feeding and slag discharge function. Background Technology

[0002] In industrial production sectors (such as machine tool processing, chemical manufacturing, and food processing), large quantities of wastewater containing solid impurities are generated (such as machine tool cutting fluid, paint wastewater, and food processing wastewater). Direct discharge of this wastewater will cause environmental pollution, while failure to effectively filter and recycle it will lead to resource waste. Therefore, solid-liquid separation of industrial wastewater has become a key requirement in the production process. However, traditional filtration equipment has many technical shortcomings in terms of processing efficiency, automation level, and adaptability, making it difficult to meet the filtration needs of modern industry. Specific problems are as follows: Traditional filtration equipment suffers from low filtration efficiency and high reliance on manual labor. It often employs atmospheric pressure filtration (such as screen filtration and sedimentation filtration), relying on gravity or simple pressure difference to achieve solid-liquid separation. For high-viscosity, high-solids-content wastewater (such as cutting fluid with a solids content exceeding 10%), the filtration speed is slow (processing capacity is only 2-3 m³ / h), and filter residue easily clogs the screen, requiring frequent manual shutdowns for cleaning. Each cleaning session takes 30-60 minutes, leading to filtration interruptions and making it unsuitable for 24-hour continuous production. Although some equipment has a slag discharge function, it requires manual disassembly of the filter cloth or screen, which is not only labor-intensive but also prone to damage to the filter cloth due to improper operation (loss rate exceeds 20%), further increasing maintenance costs. Therefore, we propose a negative pressure mesh chain filter with paper feeding and slag discharge function. Utility Model Content

[0003] The purpose of this invention is to provide a negative pressure mesh chain filter with paper feeding and slag discharge function.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure mesh chain filter with paper feeding and slag discharge function, comprising a shell, a filter box at the top of the shell, and a water inlet pipe fixedly installed at the top of the filter box. A water-slowing box is located below the water inlet pipe and inside the shell, and a perforated plate is provided at the bottom of the water-slowing box. The filter box forms an upper cavity and a negative pressure cavity. A fan is fixedly installed at the top of the shell. A pressure valve assembly is provided on the front of the shell, and a connecting pipe is fixedly installed between the fan and the pressure valve assembly. The negative pressure of the negative pressure cavity is controlled by the pressure valve assembly. Four mesh chain assemblies are provided inside the shell, and filter cloth is connected between the four mesh chain assemblies. A motor is provided at one end of one mesh chain assembly, and the motor is fixedly installed on the back of the shell. A support frame is fixedly installed on the side of the shell, and a waste bin is provided above the support frame. A water tank is provided inside the shell.

[0005] As a further embodiment of this utility model: a water tank is provided inside the outer shell, and the water tank is located below the water simmering box. A water outlet is provided on the back of the filter box, and a flange is provided at the bottom of the water outlet. A pipe of the same diameter is connected to the flange and directly inserted into the interior of the water tank and below the liquid level.

[0006] As a further embodiment of this utility model: the top of the outer shell is provided with an observation port, which extends into the interior of the water-slowing box. A cover plate is provided on the surface of the observation port, and a mounting hole is provided on the surface of the cover plate, which extends into the interior of the outer shell. A bolt is installed in the knob inside the mounting hole.

[0007] As a further embodiment of this utility model, the bottom of the outer casing is provided with four sets of omnidirectional wheels.

[0008] As a further embodiment of this utility model: a liquid level sensor is fixedly installed on the inner wall of the filter box, and the liquid level sensor is located on one side of the negative pressure cavity, and the liquid level sensor is electrically connected to the liquid supply pump.

[0009] As a further embodiment of this utility model: the mesh chain assembly includes a driving roller, a driven roller, and a mesh chain body. The driving roller and the driven roller are respectively movably installed on the inner sides of the housing, and the mesh chain body is drivenly connected between the driving roller and the driven roller.

[0010] As a further embodiment of this utility model: a maintenance component is provided on the front of the filter box, the maintenance component including a maintenance window and a movable door.

[0011] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows: 1. This utility model integrates a blower negative pressure suction and a mesh chain drive for slag discharge. The negative pressure chamber can quickly separate the solid and liquid components in the sewage. Compared with traditional normal pressure filtration equipment, the filtration speed is improved. When the negative pressure reaches the preset value, the paper feeding and slag discharge are automatically triggered, eliminating the need for manual slag cleaning. Each batch of filtration can save labor costs and avoid filtration interruption caused by manual operation, making it suitable for long-term continuous industrial production needs. 2. This utility model can intercept large particles of foreign matter in advance through the slow water box and the perforated plate, so as to avoid clogging the filter cloth and affecting filtration. The four sets of mesh chain components drive the filter cloth to move smoothly, ensuring that the filter residue is evenly accumulated and thoroughly discharged. Compared with the single set of mesh chain structure, the service life of the filter cloth is extended. The negative pressure value is precisely controlled by the pressure valve component, which can be adapted to different viscosities of sewage, with small filtration accuracy error and improved clean liquid reuse rate.

[0012] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the outer shell structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the filter box of this utility model; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0014] In the diagram: 1. Outer shell; 2. Filter box; 3. Inlet pipe; 4. Slow water box; 5. Orifice plate; 6. Observation port; 7. Upper cavity; 8. Fan; 9. Connecting pipe; 10. Motor; 11. Mesh chain assembly; 12. Support frame; 13. Waste bin; 14. Negative pressure cavity; 15. Outlet; 16. Flange; 17. Cover plate; 18. Mounting hole; 19. Maintenance components; 20. Casters; 21. Pressure valve assembly; 22. Water tank. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0016] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] Please see the appendix Figure 1 -Appendix Figure 4This utility model provides a negative pressure mesh chain filter with paper feeding and slag discharge function, including a shell 1, a filter box 2 is provided on the top of the shell 1, and a water inlet pipe 3 is fixedly installed on the top of the filter box 2. A water buffer box 4 is provided below the water inlet pipe 3 and inside the shell 1. A perforated plate 5 is provided at the bottom of the water buffer box 4. The filter box 2 forms an upper cavity 7 and a negative pressure cavity 14 inside. A blower 8 is fixedly installed on the top of the shell 1. A pressure valve assembly 21 is provided on the front of the shell 1, and a connecting pipe 9 is fixedly installed between the blower 8 and the pressure valve assembly 21. The negative pressure of the negative pressure cavity 14 is controlled by the pressure valve assembly 21. Four mesh chain assemblies 11 are provided inside the shell 1, and filter cloth is connected between the four mesh chain assemblies 11. A motor 10 is provided at one end of one mesh chain assembly 11, and the motor 10 is fixedly installed on the back of the shell 1. A support frame 12 is fixedly installed on the side of the shell 1, and a garbage bin 13 is provided above the support frame 12. A water tank 22 is provided inside the shell 1. The above solution integrates the negative pressure suction of the blower 8 and the slag discharge of the mesh chain. The negative pressure chamber 14 can quickly separate the solid and liquid components in the sewage. Compared with traditional normal pressure filtration equipment, the filtration speed is improved. When the negative pressure reaches the preset value, the paper feeding and slag discharge are automatically triggered. There is no need for manual slag cleaning. Each batch of filtration can save labor costs and avoid filtration interruption caused by manual operation. It is suitable for long-term continuous industrial production needs.

[0018] like Figure 3 As shown, a water tank 22 is provided inside the outer casing 1, and the water tank 22 is located below the water buffer box 4. A water outlet 15 is provided on the back of the filter box 2, and a flange 16 is provided at the bottom of the water outlet 15. A pipe of the same diameter is connected through the flange 16 and directly inserted into the interior of the water tank 22 and below the liquid level. The above solution is adopted: the filtered liquid is stored in water tank 22, and the liquid supply pump can directly reinject the liquid into the machine tool or production system. Compared with the traditional equipment that directly discharges the filtered liquid, the utilization rate of water resources and industrial reagents is improved, the enterprise procurement cost is reduced, the pipeline connected by flange 16 has strong sealing performance, there is no leakage during the transportation of the liquid, and secondary pollution is avoided.

[0019] like Figure 4 As shown, the top of the outer casing 1 is provided with an observation port 6, and the observation port 6 extends into the interior of the water-slowing box 4. A cover plate 17 is provided on the surface of the observation port 6. A mounting hole 18 is provided on the surface of the cover plate 17, and the mounting hole 18 extends into the interior of the outer casing 1. A bolt is installed in the knob inside the mounting hole 18. Using the above solution: the blockage of the inner orifice plate 5 of the water buffer box 4 can be observed in real time through the observation port 6, and the fault can be judged without disassembling the equipment. Compared with the equipment without the observation port 6, the fault diagnosis time is shortened. The cover plate 17 is fixed by bolts, and after disassembly, foreign objects in the gap of the orifice plate 5 can be directly cleaned, making maintenance and operation simple.

[0020] like Figure 1 As shown, the bottom of the outer casing 1 is provided with four sets of universal wheels 20; The above solution allows the equipment to rotate circumferentially via the casters 20, improving mobility compared to filtration equipment with a fixed base, and making it suitable for scenarios where multiple machine tools share a single filtration device.

[0021] like Figure 3 As shown, a liquid level sensor is fixedly installed on the inner wall of the filter box 2, and the liquid level sensor is located on one side of the negative pressure chamber 14. The liquid level sensor is electrically connected to the liquid supply pump. The above solution is adopted: the liquid level of water tank 22 and negative pressure chamber 14 is monitored in real time by liquid level sensor. When the liquid level of water tank 22 is too low, the liquid supply pump is automatically started to replenish water. When the liquid level is too high, the machine is automatically stopped. Compared with manual monitoring of liquid level, the liquid level control error is reduced, and the waste of clean liquid or the machine tool liquid interruption caused by insufficient liquid supply is avoided.

[0022] like Figure 3 As shown, the mesh chain assembly 11 includes a drive roller, a driven roller, and a mesh chain body. The drive roller and the driven roller are respectively movably installed on both sides inside the housing 1, and the mesh chain body is drivenly connected between the drive roller and the driven roller. The above solution involves supporting the mesh chain body from both sides with active and driven rollers, ensuring that the filter cloth is not misaligned or wrinkled during transmission. Compared with a structure with only single-roller transmission, the filter cloth deviation rate is reduced and the filtration accuracy is more stable.

[0023] like Figure 2 As shown, a maintenance component 19 is provided on the front of the filter box 2. The maintenance component 19 includes a maintenance window and a movable door. The above solution is adopted: by providing a maintenance component 19 on the front of the filter box 2, and the maintenance component 19 includes a maintenance window and a movable door, the device is made more convenient to maintain.

[0024] Working principle: Check that there is no leakage at the sealed connection between the outer shell 1 and the filter box 2, that the perforated plate 5 at the bottom of the slow water box 4 is not blocked, and that the filter cloth is smoothly wrapped around the four sets of mesh chain assemblies 11. Test the negative pressure system: start the fan 8 and adjust the pressure of the negative pressure chamber 14 through the pressure valve assembly 21 to ensure that the negative pressure value can be stably maintained within the preset range. Check that the connecting pipe 9 is airtight. Test the transmission system: start the motor 10 and the mesh chain assembly 11 drives the filter cloth to move smoothly without jamming. Check the liquid supply system: the liquid supply pump starts and stops normally, the pipe connected by the flange 16 is not blocked, confirm that the liquid level sensor and the liquid supply pump are electrically linked, the bolts of the cover plate 17 of the observation port 6 are firmly installed, and the brake function of the universal wheel 20 is normal. According to the characteristics of the sewage, set the trigger pressure of the negative pressure chamber 14 through the pressure valve assembly 21, adjust the speed of the motor 10 to match the paper feeding speed of the filter cloth, clean the garbage bin 13 to ensure that the sludge discharge channel is unobstructed, open the cover plate 17 of the observation port 6, check the gaps of the perforated plate 5 inside the slow water box 4, and clean the residual foreign objects to avoid initial blockage affecting the filtration efficiency. Industrial wastewater is injected through inlet pipe 3 and first enters buffer box 4. Buffer box 4, through its expanded design, reduces the flow rate of the wastewater, minimizing impact on the internal components of the equipment. Simultaneously, orifice plate 5 intercepts particles with a diameter ≥5mm. Large particles of foreign matter can be observed in real time through the observation port 6. If blockage is found, the machine should be stopped and cleaned in time. The sewage treated by the slow water box 4 flows into the filter cloth surface above the negative pressure chamber 14. The blower 8 continuously draws through the connecting pipe 9 to form a stable negative pressure in the negative pressure chamber 14. The liquid in the sewage passes through the filter cloth under the action of pressure difference and enters the water tank 22 below for storage. Solid impurities are trapped on the surface of the filter cloth to form a filter cake layer. As the filter cake gradually accumulates on the filter cloth, the negative pressure value in the negative pressure chamber 14 gradually increases. When it reaches the preset value of the pressure valve assembly 21, the equipment automatically starts the paper feeding and slag discharge program: the motor 10 drives the active roller and driven roller of the mesh chain assembly 11 to rotate. The mesh chain body pulls the filter cloth to move towards the garbage bin 13. After the filter cake on the surface of the filter cloth moves to the edge of the equipment, it falls into the garbage bin 13 on the support frame 12 under the action of gravity, completing the automatic slag discharge. After the slag discharge, the negative pressure value drops and the equipment returns to normal filtration state.

[0025] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0028] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A negative pressure net chain filter with paper feeding and slagging function, comprising a shell (1), characterized in that: A filter box (2) is provided on the top of the outer shell (1), and an inlet pipe (3) is fixedly installed on the top of the filter box (2). A water-slowing box (4) is provided below the inlet pipe (3) and inside the outer shell (1). A perforated plate (5) is provided at the bottom of the water-slowing box (4). An upper cavity (7) and a negative pressure cavity (14) are formed inside the filter box (2). A fan (8) is fixedly installed on the top of the outer shell (1). A pressure valve assembly (21) is provided on the front of the outer shell (1), and the fan (8) and the pressure valve assembly (21) are fixedly installed together. The shell (1) is equipped with a connecting pipe (9) and the negative pressure of the negative pressure chamber (14) is controlled by a pressure valve assembly (21). The shell (1) is equipped with four sets of mesh chain assemblies (11) and filter cloth is connected between the four sets of mesh chain assemblies (11). One end of one set of mesh chain assembly (11) is equipped with a motor (10) and the motor (10) is fixedly installed on the back of the shell (1). A support frame (12) is fixedly installed on the side of the shell (1) and a garbage bin (13) is installed above the support frame (12). A water tank (22) is installed inside the shell (1).

2. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: The outer shell (1) is equipped with a water tank (22) inside, and the water tank (22) is located below the water simmering box (4). The back of the filter box (2) is equipped with a water outlet (15), and the bottom of the water outlet (15) is equipped with a flange (16). A pipe of the same diameter is connected through the flange (16) and directly inserted into the interior of the water tank (22) and below the liquid level.

3. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: The top of the outer shell (1) is provided with an observation port (6), and the observation port (6) extends into the interior of the water-slowing box (4). The surface of the observation port (6) is provided with a cover plate (17), and the surface of the cover plate (17) is provided with a mounting hole (18), and the mounting hole (18) extends into the interior of the outer shell (1). The knob inside the mounting hole (18) is fitted with a bolt.

4. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: The bottom of the outer casing (1) is provided with four sets of casters (20).

5. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: A liquid level sensor is fixedly installed on the inner wall of the filter box (2), and the liquid level sensor is located on one side of the negative pressure chamber (14). The liquid level sensor is electrically connected to the liquid supply pump.

6. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: The mesh chain assembly (11) includes a drive roller, a driven roller and a mesh chain body. The drive roller and the driven roller are respectively movably installed on both sides inside the outer shell (1). The mesh chain body is drivenly connected between the drive roller and the driven roller.

7. The negative pressure net-chain filter with paper feeding and slagging functions according to claim 1, characterized in that: The front of the filter box (2) is provided with a maintenance component (19), which includes a maintenance window and a movable door.

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