Negative pressure type circulating filter belt filter tank

Abstract

This utility model relates to the field of filtration equipment and discloses a negative pressure circulating belt filter box, including a water tank body, a box body installed on the upper side of the water tank body, two drive rollers rotatably connected between the two sides of the box body, a filter cloth driven between the two drive rollers, and a negative pressure chamber fixedly connected to the two sides of the box body slidably connected between the upper and lower layers of filter cloth. A filter perforated plate is provided on the upper side of the negative pressure chamber. This utility model filters sewage through the filter perforated plate and filter cloth. When more and more impurities accumulate on the filter cloth, the pressure in the negative pressure chamber gradually increases. When the negative pressure value reaches the set value, the slag discharge process begins. That is, before slag discharge, the fan is started to dry the filter cake on the filter cloth. After drying, the drive motor assembly drives the filter cloth to rotate, and at the same time drives the brush to rotate, sweeping the impurities into the garbage bin, thereby realizing the automatic cleaning of the filter cloth without manual intervention, saving time and effort, and is very convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of filter equipment technology, and in particular to a negative pressure circulating filter belt filter box. Background Technology

[0002] In the machining of metal workpieces on machine tools, emulsified oil is mainly used for cooling and lubrication. It can effectively reduce friction and temperature during the machining process, extend the service life of tools, and improve machining accuracy and surface quality. After use, the emulsified oil contains a lot of impurities. It can be purified and filtered by a filter and recycled. However, when filtering emulsified oil, the long-term accumulation of impurities in existing filters leads to a significant decrease in the permeability of the filter screen. Therefore, the filter screen needs to be replaced and cleaned regularly, which is not only cumbersome to operate and consumes a lot of materials, but also poses a problem of long-term maintenance difficulties.

[0003] In view of this, a negative pressure circulating filter belt filter box that can solve the above problems is proposed. Utility Model Content

[0004] To solve the technical problem of replacing and cleaning the filter screen of a filter press, this utility model provides a negative pressure circulating filter belt filter box.

[0005] This utility model is achieved using the following technical solution: a negative pressure circulating belt filter filter box, comprising a water tank body, a box body installed on the upper side of the water tank body, two drive rollers rotatably connected between the two sides of the box body, a filter cloth being driven between the two drive rollers, a negative pressure chamber slidably connected between the upper and lower layers of filter cloth and fixedly connected to the two sides of the box body, a filter perforated plate provided on the upper side of the negative pressure chamber, an automatic filter cloth cleaning mechanism for cleaning the filter cloth provided on one side of the box body, a sewage guiding mechanism provided on the upper side of the water tank body, a vacuuming mechanism for controlling the air pressure of the negative pressure chamber provided on the inner side of the box body, a filter cake drying mechanism provided on the upper side of the box body, and a control box installed on one side of the box body.

[0006] As a further improvement to the above solution, the automatic filter cloth cleaning mechanism includes a baffle that communicates with one side of the housing. A brush roller is rotatably connected between the two sides of the baffle. A second sprocket is fixedly connected to one end of the brush roller. A first sprocket is fixedly connected to one end of one of the drive rollers. A chain is driven between the second sprocket and the first sprocket. The upper side of the brush roller abuts against the surface of the filter cloth on the lower side of the drive roller. A garbage bin is fixedly connected to one side of the water tank body below the brush roller. A conveyor belt drive mechanism for rotating the filter cloth is provided on one side of the baffle.

[0007] As a further improvement to the above solution, the conveyor belt drive mechanism includes a drive motor assembly mounted on the side of the baffle away from the chain, and the output end of the drive motor assembly is connected to the other end of the transmission roller.

[0008] As a further improvement to the above solution, the wastewater diversion mechanism includes a wastewater tank opened inside the water tank body, a lift pump installed on the upper side of the water tank body, the inlet of the lift pump being connected to the wastewater tank, and a connecting pipe connected between the outlet of the lift pump and the upper side of the tank body. The port of the connecting pipe is located above the negative pressure chamber. A clean liquid tank is provided inside the water tank body, and the clean liquid tank is located below the negative pressure chamber. A circulating pump mechanism is provided on one side of the clean liquid tank.

[0009] As a further improvement to the above solution, the vacuuming mechanism includes a vacuum pump installed inside the box, and a No. 3 connecting pipe connects the vacuum pump to the negative pressure chamber.

[0010] As a further improvement to the above solution, the filter cake drying mechanism includes a fan installed on the upper side of the housing, an air filter installed on one side of the housing, a blower intake pipe connected between the air filter and the air inlet of the fan, a blower exhaust pipe connected to the lower side of the housing, the blower exhaust pipe extending into the housing, and the air outlet located below the negative pressure chamber.

[0011] As a further improvement to the above solution, the circulating pump mechanism includes a liquid supply pump installed on the upper side of the water tank body, the liquid supply pump inlet being connected to one side of the clean liquid tank, and the liquid supply pump outlet being connected to the machine tool.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model filters sewage through a filter plate and a filter cloth. As more and more impurities accumulate on the filter cloth, the pressure in the negative pressure chamber gradually increases. When the negative pressure value reaches the set value, the slag discharge process begins. Before slag discharge, the blower is started to dry the filter cake on the filter cloth. After drying, the drive motor assembly drives the filter cloth to rotate, and at the same time drives the brush to rotate, sweeping the impurities into the garbage bin. This achieves automatic cleaning of the filter cloth without manual intervention, saving time and effort and making it very convenient to use.

[0014] 2. This utility model uses a fan to inject air from below the filter cloth, thereby increasing the airflow rate to quickly dry the filter cake on the filter cloth. This allows the brush roller to clean the filter cake on the filter cloth more thoroughly and cleanly, ensuring the filtration effect of the filter cloth while extending its service life. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the filter box of a negative pressure circulating filter belt filter provided by this utility model;

[0016] Figure 2 for Figure 1 Side view;

[0017] Figure 3 for Figure 1 Internal structure diagram;

[0018] Figure 4 This is a schematic diagram showing the distribution of the clean liquid tank, the waste liquid tank, and the clean liquid tank in one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the negative pressure chamber, filter plate, and filter cloth in one embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the brush roller, the first sprocket, and the second sprocket in one embodiment of the present invention.

[0021] Explanation of key symbols:

[0022] 1. Water tank body; 2. Sewage tank; 3. No. 1 connecting pipe; 4. Tank body; 5. Fan; 6. Blower air duct; 7. Blower air intake pipe; 8. Baffle; 9. Garbage bin; 10. Liquid supply pump; 11. Clean liquid tank; 13. No. 3 connecting pipe; 15. Lift pump; 16. Air filter; 17. Vacuum pump; 18. Control box; 21. Brush roller; 22. Negative pressure chamber; 23. Filter plate; 24. Filter cloth; 25. Drive roller; 26. Drive motor assembly; 27. No. 1 sprocket; 28. No. 2 sprocket; 29. ​​Chain. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example:

[0025] Please combine Figures 1-3 The negative pressure circulating filter belt filter box of this embodiment includes a water tank body 1, a box body 4 is installed on the upper side of the water tank body 1, two drive rollers 25 are rotatably connected between the two sides of the box body 4, and a filter cloth 24 is driven between the two drive rollers 25. The filter cloth 24 can be driven to rotate by the rotation of the drive rollers 25.

[0026] Please combine Figure 3As shown, a negative pressure chamber 22 is slidably connected between the upper and lower layers of filter cloth 24 and fixedly connected to both sides of the box body 4. The negative pressure chamber 22 can form a cavity with a certain space.

[0027] Please combine Figure 3 As shown, a filter plate 23 is provided on the upper side of the negative pressure chamber 22, and the sewage can leak down from the filter cloth 24 on the filter plate 23 to form a filtration effect.

[0028] Please combine Figure 3 As shown, an automatic filter cloth cleaning mechanism for cleaning the filter cloth 24 is provided on one side of the housing 4, a sewage diversion mechanism is provided on the upper side of the water tank body 1, a vacuuming mechanism for controlling the air pressure of the negative pressure chamber 22 is provided on the inner side of the housing 4, a filter cake drying mechanism is provided on the upper side of the housing 4, and a control box 18 is installed on one side of the housing 4.

[0029] Please combine Figure 1 As shown, the automatic filter cloth cleaning mechanism includes a baffle 8 that communicates with one side of the housing 4.

[0030] Please combine Figure 6 As shown, a brush roller 21 is rotatably connected between the two sides of the baffle 8, and the brush roller 21 is located directly below the drive roller 25.

[0031] Please combine Figure 6 As shown, one end of the brush roller 21 is fixedly connected to a second sprocket 28, and one end of one of the drive rollers 25 is fixedly connected to a first sprocket 27. A chain 29 is connected between the second sprocket 28 and the first sprocket 27. The radius of the first sprocket 27 is larger than that of the second sprocket 28, so the rotational speed of the brush roller 21 can be much greater than that of the drive roller 25.

[0032] Please combine Figure 6 As shown, the upper side of the brush roller 21 abuts against the surface of the filter cloth 24 on the lower side of the transmission roller 25. A garbage bin 9 is fixedly connected to one side of the water tank body 1 below the brush roller 21. The garbage bin 9 is used to collect filter residue.

[0033] Please combine Figure 6 As shown, a conveyor belt drive mechanism for rotating the filter cloth 24 is provided on one side of the baffle 8.

[0034] Please combine Figure 6 As shown, the conveyor belt drive mechanism includes a drive motor assembly 26 installed on the side of the baffle 8 away from the chain 29. The output end of the drive motor assembly 26 is connected to the other end of the transmission roller 25. A gear conversion assembly is provided at the output end of the drive motor assembly 26.

[0035] Please combine Figure 1As shown, the wastewater diversion mechanism includes a wastewater tank 2 opened inside the water tank body 1. A lift pump 15 is installed on the upper side of the water tank body 1. The inlet of the lift pump 15 is connected to the wastewater tank 2. A connecting pipe 3 is connected between the outlet of the lift pump 15 and the upper side of the tank body 4. The port of the connecting pipe 3 is located above the negative pressure chamber 22. A clean liquid tank 11 is set inside the water tank body 1. The clean liquid tank 11 is located below the negative pressure chamber 22. A circulating pump mechanism is set on one side of the clean liquid tank 11.

[0036] Please combine Figure 3 As shown, the vacuuming mechanism includes a vacuum pump 17 installed inside the housing 4. A No. 3 connecting pipe 13 connects the vacuum pump 17 and the negative pressure chamber 22. A pressure sensor is installed inside the negative pressure chamber 22. When the vacuum pump 17 is working, the filter residue blocks the filter cloth 24, resulting in poor air exchange and causing changes in the air pressure inside the negative pressure chamber 22. At this time, the pressure sensor captures the pressure value and sends it to the control box 18 for logic calculation, providing data support for starting the fan 5 and the drive motor assembly 26.

[0037] Please combine Figure 2 As shown, the filter cake drying mechanism includes a fan 5 installed on the upper side of the housing 4, an air filter 16 installed on one side of the housing 4, a blower suction pipe 7 connecting the air filter 16 and the air inlet of the fan 5, and a blower duct 6 connecting the exhaust port of the fan 5 and the lower side of the housing 4. The blower duct 6 extends into the housing 4, and its outlet is located below the negative pressure chamber 22. Figure 2 As shown, in this embodiment, the blower duct 6 is arranged in a downward flow manner on the same side to inject cold air into the box 4.

[0038] Please combine Figure 1 As shown, the circulating pump mechanism includes a liquid supply pump 10 installed on the upper side of the water tank body 1. The inlet of the liquid supply pump (10) is connected to one side of the clean liquid tank 11, and the outlet of the liquid supply pump 10 is connected to the machine tool.

[0039] The implementation principle of a negative pressure circulating filter belt filter box in this application embodiment is as follows: First, the grinding fluid, emulsified oil, etc. after the machine tool is used are injected into the sludge tank 2 through the pipeline. Then, the sludge is pumped through the No. 1 connecting pipe 3 from top to bottom through the upper side of the box body 4, first through the filter plate 23 and filter cloth 24, and then into the negative pressure chamber 22. The filtered liquid enters the clean liquid pool 20. Then, the filtered emulsified liquid is pumped to the machine tool for processing by the liquid supply pump 10.

[0040] As more and more impurities accumulate on the filter cloth 24, the pressure inside the negative pressure chamber 22 gradually increases. When the negative pressure value reaches the set value, the slag discharge process begins. Before slag discharge, the blower 5 will dry the filter cake and filter residue on the filter cloth 24. After drying, the drive motor assembly 26 starts to work, simultaneously driving the filter cloth 24 to rotate and the brush roller 21 to rotate. The brush roller 21 can sweep the impurities into the garbage bin 9.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A negative pressure type circulating filter belt filter tank comprising a water tank body (1), characterized in that, A tank body (4) is installed on the upper side of the water tank body (1). Two drive rollers (25) are rotatably connected between the two sides of the tank body (4). A filter cloth (24) is driven between the two drive rollers (25). A negative pressure chamber (22) is slidably connected between the upper and lower layers of filter cloth (24) and fixedly connected to the two sides of the tank body (4). A filter perforated plate (23) is provided on the upper side of the negative pressure chamber (22). An automatic filter cloth cleaning mechanism for cleaning the filter cloth (24) is provided on one side of the tank body (4). A sewage diversion mechanism is provided on the upper side of the water tank body (1). A vacuuming mechanism for controlling the air pressure of the negative pressure chamber (22) is provided on the inner side of the tank body (4). A filter cake drying mechanism is provided on the upper side of the tank body (4). A control box (18) is installed on one side of the tank body (4).

2. A filter box for a negative pressure type circulating belt filter according to claim 1, wherein The automatic filter cloth cleaning mechanism includes a baffle (8) connected to one side of the box (4). A brush roller (21) is rotatably connected between the two sides of the baffle (8). A second sprocket (28) is fixedly connected to one end of the brush roller (21). A first sprocket (27) is fixedly connected to one end of one of the transmission rollers (25). A chain (29) is drivingly connected between the second sprocket (28) and the first sprocket (27). The upper side of the brush roller (21) abuts against the surface of the filter cloth (24) on the lower side of the transmission roller (25). A garbage bin (9) fixedly connected to one side of the water tank body (1) is provided below the brush roller (21). A conveyor belt drive mechanism for rotating the filter cloth (24) is provided on one side of the baffle (8).

3. A negative pressure type circulating belt filter filter tank according to claim 2, wherein, The conveyor belt drive mechanism includes a drive motor assembly (26) mounted on the side of the baffle (8) away from the chain (29), and the output end of the drive motor assembly (26) is connected to the other end of the drive roller (25).

4. The filter box of claim 1, wherein, The wastewater diversion mechanism includes a wastewater tank (2) opened inside the water tank body (1). A lift pump (15) is installed on the upper side of the water tank body (1). The inlet of the lift pump (15) is connected to the wastewater tank (2). A connecting pipe (3) is connected between the outlet of the lift pump (15) and the upper side of the tank body (4). The port of the connecting pipe (3) is located above the negative pressure chamber (22). A clean liquid tank (11) is provided inside the water tank body (1). The clean liquid tank (11) is located below the negative pressure chamber (22). A circulating pump mechanism is provided on one side of the clean liquid tank (11).

5. A negative pressure type circulating belt filter filter tank according to claim 1, wherein, The vacuuming mechanism includes a vacuum pump (17) installed inside the housing (4), and a No. 3 connecting pipe (13) connects the vacuum pump (17) to the negative pressure chamber (22).

6. A negative pressure type circulating belt filter filter tank according to claim 1, wherein, The filter cake drying mechanism includes a fan (5) installed on the upper side of the housing (4), an air filter (16) installed on one side of the housing (4), a blower suction pipe (7) connecting the air filter (16) and the air inlet of the fan (5), a blower air guide pipe (6) connecting the exhaust port of the fan (5) and the lower side of the housing (4), the blower air guide pipe (6) extending into the housing (4), and the air outlet located below the negative pressure chamber (22).

7. The filter box of a negative pressure circulating filter belt filter as described in claim 4, characterized in that, The circulating pump mechanism includes a liquid supply pump (10) installed on the upper side of the water tank body (1). The inlet of the liquid supply pump (10) is connected to one side of the clean liquid tank (11), and the outlet of the liquid supply pump (10) is connected to the machine tool.

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