Triple filtering water tank
The triple-filtration water tank design solves the problems of inconvenient filter structure replacement and frequent start-stop of high-pressure water pump in machine tool cutting fluid recovery equipment, achieving efficient and environmentally friendly cutting fluid recovery and high-pressure rinsing of clean workpieces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-10
AI Technical Summary
Existing machine tool cutting fluid recovery equipment has a filter structure that is inconvenient to replace or clean, the filtration effect is substandard, it wastes resources and is not environmentally friendly, and the frequent start-stop of the high-pressure water pump damages parts.
It adopts a triple-filtration water tank design, including a primary water tank, a secondary water tank, and a tertiary water tank, each equipped with a filter tank and a heating device, a high-pressure water pump, and a switching valve to achieve segmented filtration and high-pressure water supply. It is also equipped with an intelligent monitoring system to protect the high-pressure water pump and monitor the water level.
It improves the filtration efficiency and environmental friendliness of cutting fluid, reduces resource waste, extends equipment life, lowers the failure rate, and enables efficient cutting fluid recovery and high-pressure rinsing of clean workpieces.
Smart Images

Figure CN224105699U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to machine tool filtration equipment related technical field especially three filter water tank. BACKGROUND
[0002] Machine tool needs to use cutting fluid or cleaning fluid when processing, generally cutting fluid or cleaning fluid needs to be recycled, otherwise needs to spend more cost. Some use scene still needs to exert bigger water pressure.
[0003] Cutting fluid waste liquid recovery equipment is disclosed in Chinese utility model patent application number: 202223410092.X, the device includes the bottom plate, the four corners of the bottom plate top are all fixedly installed with fixed column, the top of four fixed columns is fixedly installed with the top plate, the top of the top plate is fixedly installed with the filter box, the inside of the filter box is respectively embedded with the first filter plate, the second filter plate and the third filter plate. The utility model discloses a first filter plate, a second filter plate and a third filter plate inside the filter box, which can conveniently filter the cutting fluid in multiple stages, and the filtered cutting fluid flows into the filter cartridge, penetrates through the penetration cotton filled in the filter cartridge, and the filter cartridge is driven by the driving motor to rotate, so that the penetrated cutting fluid is centrifugally thrown out, effectively improving the recovery and treatment effect of the cutting fluid, ensuring the treatment effect of the cutting fluid, avoiding the presence of micro metal chips in the recovered cutting fluid and affecting use.
[0004] The above-mentioned prior art is simple and rough, many functions are not considered, waste is large, cannot reach the standard of recycling, is not enough for environmental protection, and the filter structure is not convenient to take out, replace or clean. UTILITY MODEL CONTENT
[0005] The utility model aims at providing three filter water tank to overcome the deficiencies in the prior art.
[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] Three filter water tank, further elaboration, including water tank, water tank includes first water tank, second water tank and third water tank, the filter box is arranged in the first water tank, the second water tank and the third water tank are respectively equipped with second filter tank and third filter tank, the lower side of water tank is provided with high pressure water pump, the water inlet of third water tank is connected with high pressure water pump, the upper portion of third water tank is provided with switch valve, and the water outlet of high pressure water pump is connected with switch valve. The internal parts of high pressure water pump are easily damaged under the condition of frequent start and stop under pressure, and the added switch valve can send water from high pressure water pump to different cleaning devices, and the switch valve can start and stop at any time to protect high pressure water pump.
[0008] Further, the secondary filter tank is inserted into the secondary water tank, the water inlet of the secondary filter tank is connected with the water outlet of the primary water pump installed in the primary water tank, and water is stored into the secondary water tank after being filtered by the secondary filter tank.
[0009] Further, the primary water tank, the secondary water tank and the tertiary water tank are respectively inserted with water level gauges for observing the water level height in the primary water tank, the secondary water tank and the tertiary water tank; the primary water tank and the secondary water tank are respectively provided with a primary water pump and a secondary water pump, and the water outlet of the secondary water pump is connected with the tertiary filter tank.
[0010] Further, the water inlet of the primary water pump extends into the primary water tank, the water outlet of the primary water pump is connected with the water inlet of the secondary filter tank, and water is stored into the secondary water tank after being filtered by the secondary filter tank.
[0011] Further, the tertiary water tank is inserted with a heating rod for heating water in the tertiary water tank, the tertiary water tank is provided with a water outlet, and the water outlet is arranged at one side of the heating rod. When some workpieces are cleaned, the water temperature needs to be controlled within a certain degree, so as to avoid that the sudden drop of the temperature affects the effect of the workpieces.
[0012] Further, the filter box is provided with a filter screen for preliminarily filtering the waste chips. The filter box is detachably installed on the primary water tank, and the filter screen is cleaned after being filtered.
[0013] Further, the water inlet of the secondary water pump extends into the secondary water tank, the water outlet of the secondary water pump is connected with the water inlet of the tertiary filter tank, and water is stored into the tertiary water tank after being filtered by the tertiary filter tank.
[0014] Further, the secondary water tank is provided with an overflow, and the overflow is communicated with one end of the primary water tank.
[0015] Further, the tertiary water tank is provided with an overflow, and the overflow is communicated with one end of the secondary water tank.
[0016] Further, the primary water tank, the secondary water tank and the tertiary water tank are respectively fixedly provided with a drain pipe, the drain pipe is respectively communicated with the primary water tank, the secondary water tank and the tertiary water tank, and the drain pipe is provided with a switch at the communicated position of the primary water tank, the secondary water tank and the tertiary water tank. After the switch is opened, water in the water tank can be discharged through the drain pipe, and the drain pipe is installed at the bottom of the water tank, so that the water can be discharged.
[0017] Compared with the prior art, the utility model has the advantages of the following:
[0018] 1. This utility model adopts a two-stage segmented filtration process, which can further improve the rationality of filtration, filter the cutting fluid in layers, effectively filter out debris, and separate the oil. It is equipped with a booster pump to pump the filtered water into a cleaning machine or a processing machine tool for high-pressure rinsing of the workpiece.
[0019] 2. It is also equipped with a heater to heat the filtered water to the appropriate temperature. An overflow valve and a water level gauge are installed to monitor the water level in the tank in real time, thereby determining whether there is a blockage.
[0020] 3. This utility model can effectively pressurize the filtered water and supply it to the cleaning machine through a switching valve, which can effectively switch on and off the high-pressure water while protecting the high-pressure pump. Attached Figure Description
[0021] Fig. 1 This is a three-dimensional structural view of the present invention;
[0022] Fig. 2 This is a structural diagram of the present invention ignoring one side sealing plate.
[0023] Attached image annotations:
[0024] 101. Primary water tank; 102. Secondary water tank; 103. Tertiary water tank; 112. Filter housing; 212. Secondary filter tank; 312. Tertiary filter tank; 108. Primary water pump; 212. Secondary filter tank; 208. Secondary water pump; 313. Electric heating rod; 309. High-pressure water pump; 310. Switching valve; 104. Drain pipe; 105. Level gauge. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. Where an element is referred to as being "a" or "one", it means there can be one or more of the element present. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing specific embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0028] The present application will now be described in detail with reference to a few embodiments thereof as illustrated in the accompanying drawings:
[0029] As shown in the drawings, in the present embodiment, a triple-filtered water tank Figs. 1-2
[0030] 1. Water tank structure design
[0031] The water tank is composed of a primary water tank (101), a secondary water tank (102), and a tertiary water tank (103) stacked longitudinally, and the three are connected by flange sealing. The top of the primary water tank is provided with a detachable filter box (112) with a built-in 100-mesh stainless steel filter screen for preliminary interception of debris and large-particle impurities. The secondary water tank (102) and the tertiary water tank (103) are respectively inserted with a secondary filter tank (212) and a tertiary filter tank (312), which are connected by threads and equipped with quick-release buckles for easy replacement of activated carbon filter cartridges and ultrafiltration membranes.
[0032] 2. Water flow path control
[0033] Primary filtration: The primary water pump (108) draws water from the primary water tank (101) into the secondary filter tank (212), and after adsorbing residual chlorine and organic matter by activated carbon, the water flows into the secondary water tank (102).
[0034] Secondary filtration: The secondary water pump (208) pressurizes the water in the secondary water tank (102) to 0.3 MPa, and after filtering bacteria and heavy metals by the ultrafiltration membrane (pore size 0.01 μm) in the tertiary filter tank (312), the water is stored in the tertiary water tank (103).
[0035] Heating function: The third-level water tank (103) is equipped with an electric heating rod (313), and the water temperature is maintained at 45±5℃ through a temperature control switch to avoid sudden temperature drop during workpiece machining.
[0036] 3. High-pressure water supply system
[0037] The bottom of the third-level water tank (103) is connected to a high-pressure water pump (309), and the water outlet is distributed to three groups of cleaning nozzles through a three-way switch valve (310). The switch valve adopts an electromagnetic structure, and the response time is ≤0.1s. It can be frequently started and stopped under 0.5MPa pressure to avoid direct impact on the water pump impeller. A pressure sensor (311) is arranged between the high-pressure water pump and the switch valve, which automatically stops when the pressure exceeds 0.8MPa.
[0038] 4. Overflow and drainage design
[0039] Secondary overflow: The side of the secondary water tank (102) is provided with a 45° inclined overflow port (204), and the overflow water flows back to the primary water tank (101) to prevent the secondary filter tank (212) from being overloaded.
[0040] Tertiary overflow: The top of the tertiary water tank (103) is provided with a U-shaped overflow groove (304), and the overflow water is discharged into the drain pipe after being purified by the activated carbon layer.
[0041] Drainage system: Each water tank is equipped with a drainage pipe (104) with a solenoid valve at the bottom, and the drainage port is 10cm away from the tank bottom, which adopts an inclined flow design to improve the drainage efficiency.
[0042] 5. Intelligent monitoring system
[0043] Water level monitoring: Magnetic reed liquid level meters (105) are installed in the primary to tertiary water tanks, and the water level data is transmitted to the PLC in real time through the RS485 interface.
[0044] Filter life management: The secondary filter tank (212) is equipped with a differential pressure sensor, which triggers an alarm and prompts to replace the filter when the differential pressure is ≥0.05MPa.
[0045] Technical effect realization
[0046] Layered filtration and oil-water separation
[0047] Through three-stage filtration (100 mesh screen→activated carbon→ultrafiltration membrane), 99.9% of the cutting fluid debris and oil stains are effectively removed, and the separation efficiency is improved by 40% compared with single-stage filtration.
[0048] High-pressure water supply stability
[0049] The quick start-stop design of the switch valve prolongs the water pump working cycle by 3 times, reduces the failure rate by 65%, and realizes ±0.02MPa precise pressure control through the pressure sensor.
[0050] Intelligent operation and maintenance management
[0051] The linkage design of overflow port and drainage system avoids water tank overload, realizes full-automatic pollution discharge combined with liquid level meter and pressure difference sensor, and reduces 70% of manual intervention.
[0052] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the description. For those skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A triple-filtration water tank, characterized in that: The system includes a water tank, which comprises a primary water tank, a secondary water tank, and a tertiary water tank. The primary water tank contains a filter housing, and the secondary and tertiary water tanks are each equipped with a secondary filter tank and a tertiary filter tank, respectively. A high-pressure water pump is installed on one side of the lower part of the water tank. The water inlet of the tertiary water tank is connected to the high-pressure water pump, and a switching valve is installed on the upper part of the tertiary water tank, which is connected to the outlet of the high-pressure water pump.
2. The triple-filtration water tank as described in claim 1, characterized in that: The secondary filter tank is inserted into the secondary water tank. The inlet of the secondary filter tank is used to connect to the outlet of the primary water pump installed in the primary water tank. After being filtered by the secondary filter tank, the water flows into the secondary water tank.
3. The triple-filtration water tank as described in claim 1, characterized in that: Each of the primary, secondary, and tertiary water tanks is equipped with a water level gauge, which is used to observe the water level in the primary, secondary, and tertiary water tanks. Each of the primary and secondary water tanks is equipped with a primary water pump and a secondary water pump, respectively, and the outlet of the secondary water pump is connected to the tertiary filter tank.
4. The triple-filtration water tank as described in claim 2, characterized in that: The inlet of the primary water pump extends into the primary water tank, and the outlet of the primary water pump is connected to the inlet of the secondary filter tank. After being filtered by the secondary filter tank, the water flows into the secondary water tank.
5. The triple-filtration water tank as described in claim 1, characterized in that: The tertiary water tank is equipped with a heating rod for heating the water in the tertiary water tank. The tertiary water tank has a water inlet located on one side of the heating rod.
6. The triple-filtration water tank as described in claim 1, characterized in that: The filter housing is equipped with a filter screen for preliminary filtration of waste debris.
7. The triple-filtration water tank as described in claim 3, characterized in that: The inlet of the secondary water pump extends into the secondary water tank, and the outlet of the secondary water pump is connected to the inlet of the tertiary filter tank. After being filtered by the tertiary filter tank, the water flows into the tertiary water tank.
8. The triple-filtration water tank as described in claim 1, characterized in that: The secondary water tank is equipped with an overflow outlet, which is connected to one end of the primary water tank.
9. The triple-filtration water tank as described in claim 1, characterized in that: The tertiary water tank is equipped with an overflow outlet, which is connected to one end of the tertiary water tank.
10. The triple-filtration water tank as described in claim 1, characterized in that: Drainage pipes are fixedly installed at the bottom of the primary, secondary, and tertiary water tanks. Each drainage pipe is connected to the primary, secondary, and tertiary water tanks respectively. Switches are installed at the connection points of the drainage pipes with the primary, secondary, and tertiary water tanks.
Citation Information
Patent Citations
Waste cutting fluid recovery equipment
CN219149503U