Long-acting filtering device for industrial water-based circulating liquid

Abstract

The utility model provides an industrial water-based circulating liquid long-acting filtering device which comprises a filter and a microorganism control device, and the microorganism control device is arranged on a water-based circulating liquid flowing path and is used for inhibiting or reducing microorganisms in circulating liquid so as to stabilize the filtering flux of the filter; the water-based circulating liquid flowing path comprises a flowing path of the water-based circulating liquid in the industrial equipment, a flowing path of the water-based circulating liquid in the filter and a flowing path between the industrial equipment and the filter, the microorganism control device is arranged on at least one path node through which the water-based circulating liquid flows, and the path node comprises equipment, a container and / or a pipeline; the microorganism control device is arranged on the flowing path of the water-based circulating liquid, so that the content of microorganisms in the water-based circulating liquid is inhibited or reduced, and the generation of a biological membrane on the surface of the filter element can be effectively reduced or prevented, so that the lasting and stable liquid flux is realized, and the service life of the filter element is effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a long-lasting filtration device for industrial water-based circulating liquid. Background Technology

[0002] In industrial circulating water precision filtration applications, especially in the circulation systems of water-based cutting fluids and grinding fluids, the requirements for precision filtration are very high, with some applications requiring micron or submicron level filtration accuracy. These precision filtration devices use filter cartridges with high-precision filtration capabilities. Taking disc filter cartridges as an example, they include a filter rod with a hollow tube body, and multiple layers of filter membranes surrounding the filter rod. During filtration, the dirty water-based circulating liquid passes through the layers of filter membranes, and after the filter membranes trap particulate matter, it returns to a clean liquid state, enters the filter rod, and flows out, completing the filtration process. Precision filtration equipment relies on filter cartridges to efficiently trap tiny particles in the water; however, during equipment operation, the filter cartridge's filtration flux may continuously decrease, significantly affecting filtration efficiency and filter cartridge lifespan.

[0003] Current solutions include:

[0004] 1. Pre-filtration: Install a pre-filter before the main filter to remove larger particles, thereby reducing the burden on the main filter and maintaining throughput.

[0005] 2. Backwashing: The filter element is flushed by reverse flow of liquid to remove deposits from the surface and pores of the filter element.

[0006] 3. Replace the filter element regularly: Replace or clean the filter element regularly to maintain flow rate.

[0007] 4. Improve the performance of the filter media.

[0008] 5. Use a filter aid.

[0009] While these methods increased the initial flow rate of filtration, they failed to completely eliminate the problem of a sharp decrease in liquid flow rate after the equipment had been running for a short period of time. Utility Model Content

[0010] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a long-lasting industrial water-based circulating liquid filtration device to solve the problem of sharp reduction in liquid flux after the equipment has been running for a period of time in the prior art.

[0011] After in-depth research, the applicant discovered that the key factor causing the decrease in liquid flux was not particulate matter clogging, but rather the formation of a biofilm on the filter element surface by microorganisms generated during the use of industrial water-based circulating liquid. This biofilm hindered the passage of liquid through the filter element. Taking disc filter elements as an example, after the microorganisms carried in the industrial water-based circulating liquid are intercepted by the stacked filter membranes during the filtration process, their reproductive products and metabolic products tend to continuously deposit on the surface of the stacked filter membranes, thus forming a biofilm that envelops the filter element.

[0012] Therefore, in response to this new technical problem discovered by the applicant, this utility model provides the following technical solution:

[0013] A long-lasting industrial water-based circulating fluid filtration device includes a filter and a microbial control device. The microbial control device is installed along the flow path of the water-based circulating fluid to inhibit or reduce microorganisms in the circulating fluid, thereby stabilizing the filtration flux of the filter.

[0014] In one embodiment of this utility model, the water-based circulating liquid flow path includes the flow path of the water-based circulating liquid in the industrial equipment, the flow path in the filter, and the flow path between the industrial equipment and the filter. The microbial control device is deployed at at least one path node through which the water-based circulating liquid flows. The path node includes equipment, containers, and / or pipes. Here, equipment, containers, and pipes refer to the types of structural components in the device. For example, filter tanks, filter pumps, and industrial equipment mentioned below are considered equipment; storage tanks, clean liquid tanks, and dirty liquid tanks are considered containers; and connecting pipes between equipment and connecting pipes between equipment and containers are considered pipes.

[0015] In one embodiment of the present invention, the filter includes a storage tank, a filter pump, and a filter canister connected in sequence. The path nodes through which the water-based circulating liquid flows in the filter include the dirty liquid inlet of the storage tank, the storage tank, the filter pump outlet, the filter canister, the filter canister outlet, and the clean liquid outlet of the storage tank.

[0016] In one embodiment of the present invention, the liquid storage tank includes a dirty liquid tank and a clean liquid tank, the dirty liquid tank is provided with a dirty liquid inlet, and the clean liquid tank is provided with a clean liquid outlet; the path nodes of the microbial control device also include the dirty liquid tank and the clean liquid tank.

[0017] In a preferred embodiment, both the dirty liquid tank and the clean liquid tank are equipped with microbial control devices. The microbial control device arranged in the dirty liquid tank is an ozone sterilization device, and the microbial control device arranged in the clean liquid tank is an ultraviolet sterilization device.

[0018] In one embodiment of this utility model, the industrial equipment is a water-based circulating fluid application device. The flow path of the water-based circulating fluid in the industrial equipment is a path that flows sequentially through the clean fluid inlet, the working outlet, and the dirty fluid outlet of the industrial equipment. For example, in the tool grinding industry, the equipment that uses grinding fluid to assist in the processing of tools is a grinding machine. Correspondingly, if the water-based circulating fluid application device is a grinding machine, then the grinding machine is the "industrial equipment," and the outlet from which the grinding fluid becomes dirty after participating in the grinding process on the grinding machine and flows out of the grinding machine is the "working outlet."

[0019] In one embodiment of the present invention, the microbial control device is selected from at least one of ozone sterilization device, ultrasonic sterilization device and ultraviolet sterilization device.

[0020] In one embodiment of the present invention, the ozone sterilization device includes an ozone generator and an aeration device connected to the outlet pipe of the ozone generator, the aeration device being disposed within a device or container serving as a path node; or the ozone sterilization device includes an ozone generator and a venturi tube, the air inlet of the venturi tube being connected to the outlet pipe of the ozone generator, the water inlet and outlet of the venturi tube being connected to a pipe serving as a path node, and the liquid flow direction in the venturi tube being consistent with the flow direction of the water-based circulating liquid.

[0021] In one embodiment of the present invention, the ultrasonic sterilization device includes an ultrasonic generator and an ultrasonic transducer assembly connected thereto, the ultrasonic transducer assembly being disposed around the path nodes through which the water-based circulating liquid flows.

[0022] In one embodiment of this utility model, the water-based circulating liquid includes a clean liquid state and a dirty liquid state in its flow path. As a preferred embodiment, when the microbial control device is an ultraviolet sterilization device, it is set at the path node through which the water-based circulating liquid flows in the clean liquid state; the flow path in the clean liquid state includes the path of the water-based circulating liquid from after filtration to before it is used in the working equipment.

[0023] As described above, the industrial water-based circulating liquid long-term filtration device of this utility model has the following beneficial effects: By setting a microbial control device in the flow path of the water-based circulating liquid, this application inhibits or reduces the microbial content in the water-based circulating liquid that enters the filter tank and comes into contact with the filter element, which can effectively reduce or prevent the formation of biofilm on the surface of the filter element, thereby achieving a lasting and stable liquid flux and an effective extension of the filter element's service life. Attached Figure Description

[0024] Figure 1 The diagram shown is a structural schematic of this utility model.

[0025] Figure 2 The diagram shown is a schematic diagram of this utility model.

[0026] Figure 3 The diagram shows the structure of an ozone sterilization device.

[0027] Figure 4 The diagram shown is a structural schematic of another embodiment of the ozone sterilization device.

[0028] Figure 5 The diagram shown is a simplified structural diagram of an ultrasonic sterilization device.

[0029] Component designation explanation

[0030] 1. Storage tank; 1-1. Dirty liquid tank; 1-2. Clean liquid tank; 2. Filter pump; 3. Filter canister; 4. Dirty liquid inlet; 5. Filter pump outlet; 6. Filter canister outlet; 7. Clean liquid outlet; 8. Clean liquid inlet; 9. Dirty liquid outlet; 10. Ozone generator; 10-1. Air outlet pipe; 11. Aeration device; 12. Venturi tube; 12-1. Air inlet; 12-2. Water inlet; 12-3. Water outlet; 13. Ultrasonic sterilization device; 13-1. Ultrasonic generator; 13-2. Ultrasonic transducer assembly. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Please see Figure 1-5 This utility model provides a long-lasting filtration device for industrial water-based circulating liquid, comprising: a filter and a microbial control device. The microbial control device is arranged along the flow path of the water-based circulating liquid to inhibit or reduce microorganisms in the circulating liquid, thereby stabilizing the filtration flux of the filter. This application achieves sustained stability of liquid flux and effectively extends the service life of the filter element by installing a microbial control device along the flow path of the water-based circulating liquid to inhibit or reduce the microbial content in the water-based circulating liquid.

[0033] The water-based circulating fluid flow path includes the path of the water-based circulating fluid in the industrial equipment, the path of the fluid in the filter, and the flow path between the industrial equipment and the filter. The microbial control device is deployed at at least one path node through which the water-based circulating fluid flows. The path node includes equipment, containers, and / or pipes. The equipment, containers, and pipes mentioned here refer to the types of structural components in the device. For example, the filter tank 3, filter pump 2, and industrial equipment mentioned below are equipment; the storage tank 1, clean liquid tank 1-2, and dirty liquid tank 1-1 are containers; and the connecting pipes between equipment and between equipment and containers are pipes.

[0034] Industrial equipment refers to devices that use water-based circulating fluids to clean, cool, and lubricate industrial products. Industrial equipment typically includes a clean fluid zone and a dirty fluid zone. The clean fluid zone refers to the area along the industrial circulation path of the water-based circulating fluid, from the moment filtered water enters the equipment until dirty fluid is generated. During this period, the circulating water passes through at least one of two carriers: pipes and containers. For example, in the tool grinding industry, filtered water enters the grinding machine through pipes and is then sprayed onto the surface of the workpiece through pipes, carrying away grinding debris and generating dirty fluid. The dirty fluid zone refers to the area along the industrial circulation path of the water-based circulating fluid, from the moment filtered water enters the equipment and generates dirty fluid until the dirty fluid flows out of the equipment. During this period, the circulating water passes through at least one of two carriers: pipes and containers. For example, in the tool grinding industry, the dirty fluid zone begins when dirty fluid is generated during workpiece processing on the grinding machine and ends when the dirty fluid is discharged from the grinding machine through pipes.

[0035] The filter is used to filter water-based circulating liquid, transforming it from a dirty liquid state to a clean liquid state. The filter comprises a storage tank 1, a filter pump 2, and a filter canister 3 connected in sequence. The path nodes through which the water-based circulating liquid flows in the filter include the dirty liquid inlet 4 of the storage tank 1, the storage tank 1, the filter pump outlet 5, the filter canister 3, the filter canister outlet 6, and the clean liquid outlet 7 of the storage tank 1. The water-based circulating liquid in contact with the filter element is inhibited by a microbial control device, effectively reducing or preventing the formation of a biofilm on the surface of the filter element in the filter canister 3, thereby achieving sustained stability of liquid flux and effectively extending the service life of the filter element.

[0036] There are two ways to set up the storage tank 1: First, the storage tank 1 is a single, complete tank. Liquid from the dirty liquid area is fed into the storage tank 1 through the dirty liquid inlet 4, stored there, filtered by the filter tank 3, and the filtered clean liquid is returned to the storage tank 1. After neutralizing with the dirty liquid in the storage tank 1, it flows out through the clean liquid outlet 7 of the storage tank 1 and into the clean liquid area of ​​the industrial equipment. Second, the storage tank 1 is divided into two sections: a dirty liquid tank 1-1 and a clean liquid tank 1-2. Correspondingly, the dirty liquid inlet 4 is located on the dirty liquid tank 1-1, and the clean liquid outlet 7 is located on the clean liquid tank 1-2. The dirty liquid from the dirty liquid area of ​​the industrial equipment flows back to the dirty liquid tank 1-1, is filtered by the filter tank 3, flows to the clean liquid tank 1-2, and is then circulated back to the clean liquid area. For the second setup, the path nodes of the microbial control device can further include the dirty liquid tank 1-1 and the clean liquid tank 1-2.

[0037] The industrial equipment described is a water-based circulating fluid application device. The flow path of the water-based circulating fluid in the industrial equipment is a path that flows sequentially through the clean fluid inlet 8, the working outlet, and the dirty fluid outlet 9 of the industrial equipment. For example, in the tool grinding industry, the equipment that uses grinding fluid to assist in the processing of tools is a grinding machine. Correspondingly, if the water-based circulating fluid application device is a grinding machine, then the grinding machine is the "industrial equipment". The outlet from which the grinding fluid becomes dirty after participating in the grinding process on the grinding machine and flows out of the grinding machine is the "working outlet".

[0038] The microbial control device can be selected from at least one of ozone sterilization device, ultrasonic sterilization device 13, and ultraviolet sterilization device. By combining different microbial control devices and deploying them along the path of the water-based circulating liquid, the microbial content in the liquid can be effectively controlled.

[0039] When the microbial control device is an ozone sterilization device, there are at least two ways to set up the ozone sterilization device:

[0040] The first type of ozone sterilization device includes an ozone generator 10 and an aeration device 11 connected to the outlet pipe 10-1 of the ozone generator 10. The aeration device 11 is installed in the equipment or container that serves as a path node. For example, the aeration device can be installed in... Figure 1 The liquid can be stored in the storage tank 1 (including the dirty liquid tank 1-1 and the clean liquid tank 1-2), the filter tank 3, or in industrial equipment. The aeration device 11 can continuously agitate the liquid and accelerate the transfer of ozone into the liquid, thereby achieving the purpose of sterilization.

[0041] The second type of ozone sterilization device includes an ozone generator 10 and a venturi tube 12. The air inlet 12-1 of the venturi tube 12 is connected to the air outlet 10-1 of the ozone generator 10. The water inlet 12-2 and water outlet 12-3 of the venturi tube 12 are connected to pipes that serve as path nodes, and the liquid flow direction in the venturi tube 12 is consistent with the flow direction of the water-based circulating liquid. For example, the pipe connected to the venturi tube 12 can be a connecting pipe in industrial equipment, a connecting pipe in a filter, or a connecting pipe between industrial equipment and a filter. Ozone from the ozone generator 10 enters the venturi tube 12 through the air inlet 12-1 and mixes thoroughly with the water-based circulating liquid, thereby achieving the purpose of sterilization.

[0042] When the microbial control device is an ultrasonic sterilization device: the ultrasonic sterilization device 13 includes an ultrasonic generator 13-1 and an ultrasonic transducer assembly 13-2 connected thereto. The ultrasonic transducer assembly 13-2 is disposed around the path nodes through which the water-based circulating liquid flows. The ultrasonic generator 13-1 can be installed in the wall of equipment, containers, or pipes, and the ultrasonic transducer assembly 13-2, connected by a cable, is arranged at the bottom of the equipment, container, or side of the pipe to ensure that ultrasonic waves are emitted to the flowing water to inhibit the growth and reproduction of microorganisms.

[0043] When the microbial control device is an ultraviolet (UV) sterilization device: the water-based circulating liquid includes both clean and dirty states in its flow path, and the UV sterilization device is preferably installed at the path nodes through which the water-based circulating liquid flows in the clean state. The UV sterilization device can be installed in the pipeline or container where the filtered circulating water is collected, or mechanisms such as terrain difference, pumping, or siphoning can be used to ensure that the liquid is disinfected by passing through the UV sterilization device.

[0044] The microbial control device can be flexibly selected and combined according to the actual situation, and set at one or more locations in each path node through which the water-based circulating liquid flows. A preferred setting of this utility model is to set microbial control devices in both the dirty liquid tank 1-1 and the clean liquid tank 1-2, with an ozone sterilization device arranged in the dirty liquid tank 1-1 and an ultraviolet sterilization device arranged in the clean liquid tank 1-2. This scheme can balance the cost and effectiveness of microbial control.

[0045] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An industrial water-based circulating fluid long-acting filter device, characterized by, The application relates to a filter and a microorganism control device arranged on a water-based circulating liquid flow path for inhibiting or reducing microorganisms in the circulating liquid, thereby stabilizing the filtering flux of the filter. The water-based circulating liquid flow path comprises a path of the water-based circulating liquid flowing in an industrial device, a path of the water-based circulating liquid flowing in the filter, and a flow transfer path between the industrial device and the filter, and the microorganism control device is arranged at at least one path node through which the water-based circulating liquid flows, the path node comprising the device, a container and / or a pipeline.

2. The industrial water-based circulating fluid long-acting filter device according to claim 1, characterized in that, The filter comprises a liquid storage tank (1), a filtering pump (2) and a filter tank (3) connected in sequence, and the path node through which the water-based circulating liquid flows in the filter comprises a dirty liquid inlet (4) of the liquid storage tank (1), the liquid storage tank (1), a filtering pump outlet (5), the filter tank (3), a filter tank outlet (6) and a clean liquid outlet (7) of the liquid storage tank (1).

3. The industrial water-based circulating fluid long-acting filter device according to claim 2, characterized in that, The liquid storage tank (1) comprises a dirty liquid tank (1-1) and a clean liquid tank (1-2), the dirty liquid inlet (4) is arranged on the dirty liquid tank (1-1), and the clean liquid outlet (7) is arranged on the clean liquid tank (1-2); and the path node where the microorganism control device is arranged comprises the dirty liquid tank (1-1) and the clean liquid tank (1-2).

4. The industrial water-based circulating fluid long-acting filter device according to claim 3, characterized in that, The dirty liquid tank (1-1) and the clean liquid tank (1-2) are both provided with the microorganism control device, the microorganism control device arranged in the dirty liquid tank (1-1) is an ozone sterilization device, and the microorganism control device arranged in the clean liquid tank (1-2) is an ultraviolet sterilization device.

5. The industrial water-based circulating fluid long-acting filter device according to claim 4, characterized in that, The industrial device is a water-based circulating liquid application device, and the flow path of the water-based circulating liquid in the industrial device is a path sequentially flowing through a clean liquid inlet (8) of the industrial device, a working outlet and a dirty liquid outlet (9).

6. The industrial water-based circulating fluid long-acting filter device according to claim 2, characterized in that, The microorganism control device is selected from at least one of an ozone sterilization device, an ultrasonic sterilization device (13) and an ultraviolet sterilization device.

7. The industrial water-based circulating fluid long-acting filter device according to claim 2, characterized in that, The ozone sterilization device comprises an ozone generator (10) and an aeration device (11) connected with a gas outlet pipe (10-1) of the ozone generator (10), and the aeration device (11) is arranged in the device or the container as the path node; 8. The industrial water-based circulating fluid long-acting filter device according to claim 7, characterized in that, Or the ozone sterilization device comprises an ozone generator (10) and a Venturi tube (12), an air inlet (12-1) of the Venturi tube (12) is communicated with the gas outlet pipe (10-1) of the ozone generator (10), a water inlet (12-2) and a water outlet (12-3) of the Venturi tube (12) are connected with the pipeline as the path node, and the liquid flow direction in the Venturi tube (12) is consistent with the flow direction of the water-based circulating liquid. The ultrasonic sterilization device (13) comprises an ultrasonic generator (13-1) and an ultrasonic vibrator assembly (13-2) connected with the ultrasonic generator (13-1), and the ultrasonic vibrator assembly (13-2) is arranged around the path node through which the water-based circulating liquid flows.

9. The industrial water-based circulating fluid long-acting filter device according to claim 7, characterized in that, The water-based circulating liquid comprises a clean liquid state and a dirty liquid state in the flow path thereof, and the ultraviolet sterilization device is arranged at the path node through which the water-based circulating liquid flows in the clean liquid state.

10. The industrial water-based circulating fluid long-acting filter device according to claim 7, characterized in that, ​

Images