Filtering device capable of being flushed
By introducing a scraper and support rod structure into the filtration device, combined with a PLC controller, the automatic cleaning of the filter screen is achieved, solving the problems of filter screen wear and leakage caused by filter residue accumulation, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520290379.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing filters cannot effectively clean the filter screen, leading to the accumulation of filter residue, causing filter screen wear and leakage, which affects production efficiency and product quality.
A washable filter device was designed, comprising a scraper, a support rod, and a drain butterfly valve. The scraper cleans the filter residue by the flow of cooling water, and the cleaning is automated by combining it with a PLC controller.
It effectively prevents filter residue buildup, extends filter screen life, avoids material leakage, and ensures production continuity and product quality.
Smart Images
Figure CN223861436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration device technology, specifically to a washable filtration device. Background Technology
[0002] Filtration devices are essential industrial equipment used to remove solid particles or other impurities from fluids, ensuring their purity. They have wide applications in various fields, including but not limited to water treatment, chemical, pharmaceutical, and food processing. In hot rolling production lines, cooling water filters are primarily used to intercept various impurities in the water to purify the water or protect the normal operation of other equipment in the system. When water enters the filter cartridge through the inlet, impurities are trapped in the filter screen, and finally, the filtered clean water flows out from the outlet.
[0003] However, after a period of use, existing filters accumulate a large amount of filter residue in the filter screen. This residue clogs the mesh, affecting the filtration speed of cooling water. Simultaneously, the residue causes wear and tear on the filter screen, leading to material leakage and hindering quick cleaning. Because the filter screen cannot be cleaned, the accumulated residue rubs against it, eventually causing damage and leakage. This residue and cooling water are then transported to the rolling mill, clogging the cooling manifold nozzles of the finishing mill rolls, reducing water flow, and increasing the work roll temperature. This indirectly causes changes in the roll shape of the finishing mill rolls, resulting in variations in the wedge-shaped convexity of the product surface. Furthermore, the increased roll temperature fails to meet production needs, necessitating a reduction in production pace and directly impacting the normal operation of the production line.
[0004] Therefore, in order to solve the above problems, this utility model provides a washable filter device to solve the problem that in the prior art filters, the filter screen cannot be cleaned, resulting in the accumulation of filter residue in the filter screen, causing filter screen wear, and thus leading to filter screen leakage. Utility Model Content
[0005] The purpose of this invention is to provide a washable filter device to solve the problem that existing filters cannot be cleaned, leading to the accumulation of filter residue in the filter screen, causing wear and tear, and ultimately resulting in filter leakage.
[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a washable filtration device, including a filter cartridge, an inlet and an outlet, an outlet control valve connected to the outlet via a flange, a cartridge cover detachably connected to one end of the filter cartridge, a pressure cap bolted to the cartridge cover, a support rod movably passing through the pressure cap, a scraper fixedly connected to the support rod, a drain butterfly valve on the cartridge cover, a filter screen inside the filter cartridge, the filter screen communicating with the inlet, and the scraper located inside the filter screen.
[0007] The working principle of this utility model is as follows: When in use, first fix the inlet to the cooling water pipe, then open the outlet control valve, and then let the cooling water flow into the filter screen. After the cooling water passes through the filter screen, the filter residue is left in the filter screen, and the filtered cooling water is discharged from the outlet. When it is necessary to clean the filter residue in the filter screen, first close the outlet control valve, then open the drain butterfly valve, and then let the cooling water flow into the filter screen. Then, the operator rotates the support rod, which drives the scraper to rotate in the filter screen, thereby causing the filter residue in the filter screen to be discharged from the drain outlet with the water flow.
[0008] The beneficial effects of this utility model are as follows: This utility model achieves the cleaning of the filter screen by setting a cleaning scraper and support rod inside the filter screen and setting a drain butterfly valve on the filter cylinder cover. This design can clean the impurities inside the filter screen and effectively prevent excessive accumulation of impurities from causing wear on the filter screen and thus causing the problem of filter screen leakage.
[0009] Option 2, which is a preferred option of the basic option, is provided with a sealing gasket at the connection between the pressure cap and the barrel cover; the sealing gasket improves the sealing between the pressure cap and the barrel cover and can prevent liquid leakage in the filter cartridge.
[0010] Option 3, which is a preferred option of the basic option, has a handle on one end of the support rod that passes through the pressure cap; the handle design makes it easy for the operator to rotate the support rod and facilitates operation.
[0011] Option 4, which is a preferred option of the basic option, has a motor installed at one end of the support rod that passes through the pressure cover. The motor is powered on and connected to a PLC controller. The PLC controller can realize remote control, and the filter can be cleaned without the need for staff to manually rotate the support rod.
[0012] Option 5, which is a preferred option of the basic option, is that both the outlet control valve and the drain butterfly valve are solenoid valves, and both are electrically connected to the PLC controller; the PLC controller can realize remote control, which is convenient for operators.
[0013] Option 6, which is a preferred option of the basic option, is that the filter cartridge and the cartridge cover are bolted together, and the filter cartridge and the filter screen are bolted together; the detachable design makes it easy for staff to replace the filter screen. Attached Figure Description
[0014] Figure 1 This is a perspective view of a washable filter device according to the present invention;
[0015] Figure 2 This is a schematic diagram of the structure of a washable filter device according to the present invention;
[0016] Figure 3 This is a cross-sectional view of a washable filter device according to this utility model. Detailed Implementation
[0017] The present invention will be further described in detail below through specific embodiments:
[0018] The reference numerals in the accompanying drawings of the instruction manual include: 1. Filter cartridge; 2. Inlet; 3. Outlet; 4. Outlet control valve; 5. Cover; 6. Pressure cap; 7. Support rod; 8. Scraper; 9. Drain butterfly valve; 10. Filter screen; 11. Sealing gasket; 12. Rotary handle; 13. Motor.
[0019] Example 1
[0020] like Figure 1 As shown: A washable filtration device includes a filter cartridge 1, an inlet 2 and an outlet 3 on the filter cartridge 1, an outlet control valve 4 connected to the outlet 3 by a flange, a cartridge cover 5 bolted to one end of the filter cartridge 1, a pressure cap 6 bolted to the cartridge cover 5, a sealing gasket 11 at the connection between the pressure cap 6 and the cartridge cover 5, a support rod 7 movably passing through the pressure cap 6, a handle 12 fixedly connected to one end of the support rod 7 passing through the pressure cap 6, a scraper 8 fixedly connected to the support rod 7, a drain butterfly valve 9 on the cartridge cover 5, a filter screen 10 bolted inside the filter cartridge 1, the filter screen 10 communicating with the inlet 2, and the scraper 8 located inside the filter screen 10.
[0021] The implementation method of this embodiment is as follows: When cooling water filtration is required, firstly, use bolts to fix the inlet 2 to the cooling water pipe, then open the outlet control valve 4, and then let the cooling water flow into the filter screen 10. After the cooling water passes through the filter screen 10, the filter residue is left in the filter screen 10, and the filtered cooling water is discharged from the outlet 3. When it is necessary to clean the filter residue in the filter screen 10, first close the outlet control valve 4, then open the drain butterfly valve 9, and then let the cooling water flow into the filter screen 10. Then, the operator holds the handle 12 and rotates the support rod 7, which drives the scraper 8 to rotate in the filter screen 10, thereby causing the filter residue in the filter screen 10 to be discharged from the drain outlet with the water flow, thus completing the cleaning of the filter screen 10.
[0022] Example 2
[0023] like Figure 2 and Figure 3As shown: A washable filtration device includes a filter cartridge 1, an inlet 2 and an outlet 3 on the filter cartridge 1, an outlet control valve 4 connected to the outlet 3 by a flange, the outlet control valve 4 being a solenoid valve, and a PLC controller electrically connected to the outlet control valve 4, a cartridge cover 5 bolted to one end of the filter cartridge 1, a pressure cap 6 bolted to the cartridge cover 5, a sealing gasket 11 provided at the connection between the pressure cap 6 and the cartridge cover 5, a support rod 7 movably passing through the pressure cap 6, a motor 13 provided at one end of the support rod 7 passing through the pressure cap 6, the motor 13 being electrically connected to the PLC controller, a scraper 8 fixedly connected to the support rod 7, a drain butterfly valve 9 provided on the cartridge cover 5, the drain butterfly valve 9 being a solenoid valve, the drain butterfly valve 9 being electrically connected to the PLC controller, a filter screen 10 bolted inside the filter cartridge 1, the filter screen 10 communicating with the inlet 2, and the scraper 8 located inside the filter screen 10.
[0024] The implementation method of this embodiment is as follows: When cooling water filtration is required, firstly, the inlet 2 is fixed to the cooling water pipe with bolts. Then, the operator opens the outlet control valve 4 through the PLC controller and then the cooling water is introduced into the filter screen 10. After the cooling water is filtered through the filter screen 10, the filter residue is left in the filter screen 10, and the filtered cooling water is discharged from the outlet 3. When the filter residue in the filter screen 10 needs to be cleaned, firstly, the operator closes the outlet control valve 10 through the PLC controller, then opens the drain butterfly valve 9 and the motor 13, and then introduces cooling water into the filter screen 10. The motor 13 drives the support rod 7 to rotate, and at the same time drives the scraper 8 to rotate in the filter screen 10, so that the filter residue in the filter screen 10 is discharged from the drain outlet with the water flow. After cleaning, the drain butterfly valve 9 and the motor 13 are closed to complete the cleaning of the filter screen 10.
[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A washable filter device, characterized in that, The filter includes a filter cartridge (1), which has an inlet (2) and an outlet (3). An outlet control valve (4) is connected to the outlet (3) via a flange. A cover (5) is detachably connected to one end of the filter cartridge (1). A pressure cap (6) is bolted to the cover (5). A support rod (7) is movably inserted through the pressure cap (6). A scraper (8) is fixedly connected to the support rod (7). A drain butterfly valve (9) is provided on the cover (5). A filter screen (10) is provided inside the filter cartridge (1). The filter screen (10) is connected to the inlet (2). The scraper (8) is located inside the filter screen (10).
2. The washable filter device according to claim 1, characterized in that, A sealing gasket (11) is provided at the connection between the pressure cap (6) and the cylinder cap (5).
3. The washable filter device according to claim 1, characterized in that, The support rod (7) has a throttle (12) fixedly connected to one end of the end that passes through the pressure cap (6).
4. The washable filter device according to claim 1, characterized in that, The support rod (7) has a motor (13) at one end that passes through the pressure cover (6), and the motor (13) is connected to a PLC controller.
5. A washable filter device according to claim 1, characterized in that, Both the outlet control valve (4) and the drain butterfly valve (9) are solenoid valves, and both are electrically connected to the PLC controller.
6. A washable filter device according to claim 1, characterized in that, The filter cartridge (1) and the cover (5) are bolted together, and the filter cartridge (1) and the filter screen (10) are bolted together.