A grinding fluid filter tank

Abstract

This utility model discloses a grinding fluid filter tank, including a cylindrical tank body. The outer wall of the tank body is provided with several self-cleaning ports that penetrate the tank wall from top to bottom. The air inlet of the self-cleaning port is connected to compressed air. After the self-cleaning port penetrates the tank wall, a nozzle is connected to each of the self-cleaning ports on the inner wall of the tank body. By providing multiple self-cleaning ports from top to bottom on the filter tank body, when compressed air is introduced, the compressed air enters the entire space of the filter tank, rather than just disturbing the lower part of the filter tank, thereby expanding the cleaning area and enabling the grinding fluid in the tank to achieve more thorough turbulence.

Description

Technical Field

[0001] This utility model relates to the field of grinding fluid filtration equipment, and in particular to a grinding fluid filtration tank. Background Technology

[0002] In the metalworking industry, grinding fluids are used to lubricate and cool workpieces, and their effectiveness depends on the filtration effect of circulating purification through a filter canister. Current filter canister self-cleaning mechanisms include two steps: self-cleaning and backflushing. Self-cleaning involves injecting compressed air from the bottom of the canister to the lower middle section to tumble the grinding fluid and remove impurities from the filter element and inner wall. Backflushing involves injecting compressed air from the top to remove the grinding fluid and impurities.

[0003] However, existing methods have limitations. Due to the single compressed air input path and the limitation of filter tank size, the internal liquid turbulence is uneven: the grinding fluid in the lower middle part turbules effectively, while the upper middle part turbules insufficiently, resulting in incomplete impurity removal and affecting the filtration flux. To address this technical problem, this application proposes a solution. Summary of the Invention

[0004] Purpose of the utility model: The purpose of this utility model is to provide a grinding fluid filter tank that allows compressed air to fully contact the grinding fluid from top to bottom when entering the filter tank, thereby improving the backwashing effect.

[0005] Technical solution: The present invention provides a grinding fluid filter tank, comprising a cylindrical tank body. The outer wall of the tank body is provided with a plurality of self-cleaning ports penetrating the tank wall from top to bottom. The air inlet of the self-cleaning port is connected to compressed air, and the air outlet of the self-cleaning port is connected to the inside of the tank body. The inner wall of the tank body is provided with a plurality of nozzles, and any one of the nozzles is connected to the air outlet of the self-cleaning port.

[0006] In this way, the self-cleaning port has a larger coverage area, which greatly increases the turbulence range of the grinding fluid and improves the cleaning effect.

[0007] Preferably, the self-cleaning ports are arranged at equal intervals from top to bottom along the height direction of the tank.

[0008] This ensures uniform air turbulence inside the tank, eliminating the need for a single air inlet to backflush and self-clean the tank.

[0009] Preferably, the tank body has multiple self-cleaning ports on the same horizontal cross section, and the self-cleaning ports are evenly arranged around the circumference of the tank body.

[0010] This further improves the uniformity of the disturbance inside the tank caused by the high-pressure air entering the tank, and avoids the accumulation of local impurities.

[0011] Preferably, the air inlet of the self-cleaning port is connected to an external air source through a self-cleaning pipe disposed outside the tank body, and the self-cleaning pipe is distributed along at least a portion of the tank wall and connected to the plurality of self-cleaning ports.

[0012] Preferably, the self-cleaning pipe is a single continuous pipe or a network of pipes consisting of multiple interconnected pipe sections.

[0013] The various combinations of self-cleaning pipes allow the overall pipe network to adapt to a variety of different installation environment requirements.

[0014] Preferably, the nozzle includes a flow guiding member that fits against the inner wall of the tank. The edge of the flow guiding member is fixed to the inner wall of the tank in an airtight manner, together forming a flow guiding channel extending along the inner wall of the tank. The air inlet end of the flow guiding channel is the air inlet end of the nozzle and is connected to the self-cleaning port. The air outlet end of the flow guiding channel is the air outlet end of the nozzle and is an opening facing the inside of the tank.

[0015] The high-pressure air introduced through the self-cleaning port is output along the inner wall of the tank by the flow guiding component, so that the airflow moves along the direction of the inner wall of the tank, thereby driving the grinding fluid to form a rotating flow state along the curved surface of the tank, improving the self-cleaning effect.

[0016] Preferably, the cross-sectional area of ​​the guide channel gradually increases from the air inlet end to the air outlet end.

[0017] Preferably, the cross-sectional area of ​​the air outlet end of the guide channel is smaller than the cross-sectional area of ​​the air inlet end.

[0018] This design creates an airflow acceleration effect at the air outlet.

[0019] Preferably, the side of the tank is provided with an overflow port.

[0020] The overflow port is designed to discharge excess gas and liquid during self-cleaning, preventing excessive pressure inside the tank.

[0021] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0022] (1) By setting multiple self-cleaning ports from top to bottom on the filter tank body, when compressed air is introduced, the compressed air enters the entire space of the filter tank, rather than only disturbing the lower part of the filter tank, thereby expanding the cleaning area and enabling the grinding fluid in the tank to tumble more fully.

[0023] (2) The nozzle design enhances the air outlet effect, which not only promotes the tumbling of the grinding fluid, but also makes it form a rotating flow in the tank, thereby making it easier to remove impurities on the surface of the filter element and the inner wall of the tank. This allows the impurities to be removed more thoroughly during the subsequent backflushing process, ensuring that the filter tank can maintain high-efficiency filtration performance and flow rate for a long time. Attached Figure Description

[0024] Figure 1 This is a front view of the present invention.

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 3 This is a front sectional view of the present invention.

[0027] Figure 4 Cross-sectional view of the three-dimensional structure of this utility model Figure 1 .

[0028] Figure 5 Cross-sectional view of the three-dimensional structure of this utility model Figure 2 .

[0029] Figure 6 This is a three-dimensional structural diagram of the self-cleaning pipe with a straight pipe structure according to this utility model.

[0030] Figure 7 This is a three-dimensional structural diagram of the self-cleaning tube with a spiral structure according to this utility model. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0032] Example 1

[0033] See appendix Figures 1-6 The grinding fluid filter tank shown in the figure includes a tank body 1. The outer wall of the tank body 1 is provided with a plurality of self-cleaning ports 2 penetrating the tank wall from top to bottom. The air inlet of the self-cleaning port 2 is connected to compressed air, and the air outlet of the self-cleaning port 2 is connected to the inside of the tank body. The inner wall of the tank body 1 is provided with a plurality of nozzles 3, and any nozzle 3 is connected to the air outlet of the self-cleaning port 2. In this way, the self-cleaning port 2 has a large coverage area, which greatly increases the turbulence range of the grinding fluid and improves the cleaning effect.

[0034] In this embodiment, the self-cleaning ports 2 are arranged at equal intervals from top to bottom in the height direction of the tank body 1. At the same time, multiple self-cleaning ports 2 are provided on the same horizontal cross section of the tank body 1. The self-cleaning ports are evenly arranged around the tank body 1. This arrangement makes the air disturbance inside the tank body 1 uniform, and it is no longer a single compressed air inlet that backflushs and self-cleanses the tank body 1, thus avoiding the accumulation of local impurities.

[0035] In this embodiment, the air inlet of the self-cleaning port 2 is connected to an external air source through a self-cleaning pipe 4 located outside the tank body 1. The self-cleaning pipe 4 is distributed along a part of the tank wall and connected to multiple self-cleaning ports 2. The self-cleaning pipe 4 includes an annular pipe section and a vertical pipe section. The self-cleaning ports 2 at the same height of the tank body 1 are connected through the annular pipe section. After the annular pipe sections at different heights are connected through the vertical pipe section, they are all connected to the external air source.

[0036] In this embodiment, the nozzle 3 includes a flow guide component that fits against the inner wall of the tank 1. The edge of the flow guide component is airtightly fixed to the inner wall of the tank 1, together forming a flow guide channel extending along the inner wall of the tank 1. The air inlet end of the flow guide channel is the air inlet end of the nozzle 3, which is connected to the self-cleaning port 2. The air outlet end 12 of the flow guide channel is the air outlet end of the nozzle 3, which is an opening facing the inside of the tank 1. After the high-pressure air introduced by the self-cleaning port 2 is output along the inner wall of the tank 1 through the flow guide component, the airflow moves along the inner wall of the tank 1, thereby pushing the grinding fluid to form a rotating flow state along the curved surface of the tank 1, improving the self-cleaning effect.

[0037] In this embodiment, the cross-sectional area of ​​the guide channel gradually increases from the air inlet to the air outlet 12, and the opening cross-sectional area of ​​the air outlet 12 of the guide channel is smaller than that of the air inlet. This arrangement can create an airflow acceleration effect at the air outlet.

[0038] In this embodiment, an overflow port 5 is provided on the side of the tank 1. The overflow port 5 is provided to discharge excess gas and liquid during self-cleaning to prevent the internal pressure of the tank 1 from becoming too high.

[0039] Example 2

[0040] See appendix Figure 7 In this embodiment, the self-cleaning port 2 is connected to an external air source through the self-cleaning pipe 4, and the self-cleaning ports 2 at different heights are interconnected with the external air source through the self-cleaning pipe 4 with a spiral structure.

[0041] Example 3

[0042] When the filter tank is working, dirty liquid enters the tank 1 through dirty liquid inlet 6. Under the action of filter element 11, the filtered grinding fluid flows out from clean liquid outlet 7 for use by the machine. After a certain period of time, a large amount of impurities remain on the surface and inner wall of filter element 11 in the tank 1, clogging filter element 11 and reducing the flow rate of filter element 11. It is necessary to carry out self-cleaning and backflushing processes to remove impurities from filter element 11 and inner wall surface and discharge them.

[0043] At this time, the self-cleaning process is started. The filter tank stops the liquid inlet and outlet. Compressed air at a specific pressure is input through the air inlet 10. The compressed air is distributed to each self-cleaning port 2 through the self-cleaning pipe 4 and then enters the tank body 1. It enters the guide channel through the nozzle 3. Since the guide channel is a narrow gas channel formed by the guide component and the inner wall of the tank body 1, when the compressed air is discharged through the nozzle 3, the direction of the air outlet is tangent to the inner wall at the corresponding position, causing the compressed air to push the grinding fluid in the tank body 1 to flow along the inner wall. Multiple sets of nozzles 3 work together to make the grinding fluid fully roll and form a rotating flow state inside the tank body 1. During this process, the impurities on the surface of the filter element 11 and the inner wall of the tank body are effectively stripped off by the impact of the water flow and remixed into the grinding fluid.

[0044] During the self-cleaning process, in order to prevent excessive pressure inside the tank 1, the overflow port 5 is opened, and while the self-cleaning port 2 delivers compressed air, excess gas and liquid are discharged from the overflow port 5.

[0045] After a certain period of self-cleaning, the air inlet 10 stops intake, the overflow port 5 closes, the backflush port 8 opens and delivers compressed air, and the drain port 9 opens. Under the action of air pressure, impurities and grinding fluid in the tank 1 are discharged from the drain port 9 and collected for subsequent processing.

[0046] At the backflush port, the filter canister completes self-cleaning, filter element 11 resumes flow, and the filter canister re-enters the normal filtration process.

Claims

1. A grinding fluid filter tank, comprising a cylindrical tank body (1), characterized in that: The outer wall of the tank (1) is provided with a number of self-cleaning ports (2) that penetrate the tank wall from top to bottom. The air inlet of the self-cleaning port (2) is connected to compressed air, and the air outlet of the self-cleaning port (2) is connected to the inside of the tank. The inner wall of the tank (1) is provided with a number of nozzles (3), and any of the nozzles (3) is connected to the air outlet of the self-cleaning port (2).

2. The grinding fluid filter tank according to claim 1, characterized in that: The self-cleaning ports (2) are arranged at equal intervals from top to bottom along the height direction of the tank (1).

3. A grinding fluid filter tank according to claim 1, characterized in that: The tank (1) has multiple self-cleaning ports (2) on the same horizontal cross section, and the self-cleaning ports (2) are evenly arranged around the tank.

4. A grinding fluid filter tank according to claim 1, characterized in that: The air inlet of the self-cleaning port (2) is connected to an external air source through a self-cleaning pipe (4) located outside the tank body (1). The self-cleaning pipe (4) is distributed along at least a portion of the tank wall and connected to the plurality of self-cleaning ports (2).

5. A grinding fluid filter tank according to claim 4, characterized in that: The self-cleaning pipe (4) is a single continuous pipe or a network of pipes consisting of multiple interconnected pipe sections.

6. A grinding fluid filter tank according to claim 1, characterized in that: The nozzle (3) includes a flow guide component that fits against the inner wall of the tank (1). The edge of the flow guide component is airtightly fixed to the inner wall of the tank (1) and together they form a flow guide channel extending along the inner wall of the tank (1). The air inlet end of the flow guide channel is the air inlet end of the nozzle and is connected to the self-cleaning port (2). The air outlet end (12) of the flow guide channel is the air outlet end of the nozzle and faces the opening inside the tank (1).

7. A grinding fluid filter tank according to claim 6, characterized in that: The cross-sectional area of ​​the flow channel gradually increases from the air inlet to the air outlet (12).

8. A grinding fluid filter tank according to claim 6, characterized in that: The cross-sectional area of ​​the air outlet (12) of the flow channel is smaller than that of the air inlet.

9. A grinding fluid filter tank according to claim 1, characterized in that: An overflow port (5) is provided on the side of the tank (1).

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