Pre-filter device for integrated water purification equipment
By introducing a flushing sleeve and flushing holes into the pre-filter, the problem of filter element surface clogging is solved, achieving a backwashing effect on the filter element and improving filtration efficiency and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-03
AI Technical Summary
Existing pre-filters cannot effectively backwash from the outside of the filter element, causing the filter pores on the filter element surface to become clogged and affecting the subsequent filtration effect.
A pre-filter device was designed, comprising a flushing sleeve and a flushing hole, which uses external water flow to backwash the surface of the filter element to remove particulate impurities from the surface of the filter element.
It effectively removes impurities from the surface of the filter element, improving the filtration efficiency and service life of the filter element.
Smart Images

Figure CN224071309U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a pre-filter device for an integrated water purification system. Background Technology
[0002] Water treatment plants typically use integrated water purification equipment for water purification, which requires a pre-filter to perform initial filtration.
[0003] Existing pre-filters contain filter cartridges for filtering water. Large particles in the water are trapped inside the cartridge, while clean water flows through to the outlet pipe. However, over time, these large particles can clog the filter pores. Existing pre-filters can only perform forward rinsing from the inside of the cartridge, making backwashing from the outside difficult. This hinders the removal of particulate impurities from the filter pores, reducing the efficiency of removing these impurities and compromising the overall filtration performance. Therefore, they have certain limitations.
[0004] Therefore, it is necessary to provide a pre-filter device for integrated water purification equipment to solve the above problems. Summary of the Invention
[0005] The technical problem to be solved by this utility model is to provide a pre-filter device for an integrated water purification equipment, so as to solve the problems mentioned in the background art.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A pre-filter device for an integrated water purification system includes a fixed base. An inlet chamber and an outlet chamber are respectively provided on both sides of the fixed base. The inlet chamber and outlet chamber are connected to an inlet pipe and an outlet pipe, respectively. A cylindrical body is provided at the bottom of the fixed base, and a filter element is disposed inside the cylindrical body. The bottom of the inlet chamber is connected to the filter element, and a drain port is connected to the bottom of the cylindrical body. A flushing sleeve is fixedly disposed inside the cylindrical body, located outside the filter element. A receiving cavity is provided inside the flushing sleeve. A flushing hole is opened on the inner surface of the flushing sleeve, and a connecting hole is opened at one end of the top of the flushing sleeve. A flushing pipe is fixedly inserted through one side of the fixed base. A connecting cavity is also provided inside the fixed base. The flushing pipe, the connecting cavity, and the connecting hole are sequentially connected.
[0008] Preferably, the flushing pipe is equipped with a control valve.
[0009] Preferably, a plurality of flushing holes are provided, and the plurality of flushing holes are evenly distributed on the inner surface of the flushing sleeve.
[0010] Preferably, the filter element has an opening at the bottom and a drain valve is provided at the front end of the cylinder, the drain valve being used to control the opening and closing of the opening.
[0011] The beneficial effects of this utility model are as follows: When the control valve is opened, external water flow is introduced through the flushing pipe. The incoming water flow passes through the connecting cavity and connecting hole in sequence and enters the receiving cavity inside the flushing sleeve. As the water flow continues to flow in, the water flow in the receiving cavity increases, and finally passes through several flushing holes and is shot toward the surface of the filter element. This allows the particulate impurities in the filter pores on the surface of the filter element to fall into the filter element due to the impact force from the outside, thus completing the backwashing of the filter element. Afterwards, the particulate impurities and dirt can be discharged through the drain valve and drain port to ensure the filtration effect of subsequent filter elements. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.
[0013] Figure 1 A front sectional view of the entire utility model;
[0014] Figure 2 Provided by this utility model Figure 1 Partial structural diagram;
[0015] Figure 3 A perspective view of the flushing sleeve provided by this utility model;
[0016] Figure 4 A top sectional view of the flushing sleeve provided by this utility model;
[0017] Figure 5 A front view of the entire present invention.
[0018] The components are as follows: 1. Fixed base; 2. Inlet chamber; 3. Outlet chamber; 4. Inlet pipe; 5. Outlet pipe; 6. Cylinder; 7. Filter element; 8. Drain outlet; 9. Flushing sleeve; 10. Receiving cavity; 11. Flushing hole; 12. Connecting hole; 13. Flushing pipe; 14. Connecting cavity; 15. Control valve; 16. Drain valve. Detailed Implementation
[0019] See Figures 1 to 5The pre-filter device for an integrated water purification system shown includes a fixed base 1. An inlet chamber 2 and an outlet chamber 3 are respectively provided on both sides of the fixed base 1. The inlet chamber 2 and outlet chamber 3 are respectively connected to an inlet pipe 4 and an outlet pipe 5. A cylindrical body 6 is provided at the bottom of the fixed base 1. A filter element 7 is disposed inside the cylindrical body 6. The bottom of the inlet chamber 2 is connected to the filter element 7. A drain port 8 is connected to the bottom of the cylindrical body 6. A flushing sleeve 9 is fixedly disposed inside the cylindrical body 6, located outside the filter element 7. A receiving cavity 10 is provided inside the flushing sleeve 9. A flushing hole 11 is opened on the inner surface of the flushing sleeve 9. A connecting hole 12 is opened at one end of the top of the flushing sleeve 9. A flushing pipe 13 is fixedly inserted through one side of the fixed base 1. A connecting cavity 14 is also provided inside the fixed base 1. The flushing pipe 13, the connecting cavity 14, and the connecting hole 12 are sequentially connected.
[0020] Furthermore, a control valve 15 is provided on the flushing pipe 13.
[0021] The internal passage of the flushing pipe 13 is opened and closed by controlling valve 15.
[0022] Furthermore, a plurality of flushing holes 11 are provided, and the plurality of flushing holes 11 are evenly distributed on the inner ring surface of the flushing sleeve 9.
[0023] The presence of several flushing holes 11 ensures that the water flowing into the flushing sleeve 9 is evenly directed toward the surface of the filter element 7 for flushing.
[0024] Furthermore, the filter element 7 has an opening at its bottom, and the cylinder 6 has a drain valve 16 at its front end. The drain valve 16 is used to control the opening and closing of the opening.
[0025] Open the drain valve 16 so that the opening inside the filter element 7 is open. When water continues to enter through the inlet pipe 2, the impurities inside the filter element 7 can be discharged through the drain port 8 by the water flow.
[0026] In use, the inlet pipe 4 and outlet pipe 5 are connected to the external water inlet and outlet channels, respectively. Water flows sequentially through the inlet pipe 4 and the inlet chamber 2 into the filter element 7, where it is filtered through the filter holes on the surface of the filter element 7. This allows large particles of impurities in the water to remain inside the filter element 7, while clean water flows out through the inside of the cylinder 6, the outlet chamber 3, and the outlet pipe 5. Opening the drain valve 16 opens the opening inside the filter element 7. When water continues to enter through the inlet pipe 2, the impurities inside the filter element 7 are discharged through the drain port 8. Valve 15 allows external water to enter through flushing pipe 13. The incoming water flows through connecting cavity 14 and connecting hole 12 in sequence, and enters receiving cavity 10 inside flushing sleeve 9. As the water continues to flow in, the water in receiving cavity 10 increases and eventually flows through several flushing holes 11 towards the surface of filter element 7. This allows particulate impurities in the filter holes on the surface of filter element 7 to fall into the filter element 7 due to the impact of the external environment, thus completing the backwashing of filter element 7. Afterward, particulate impurities and dirt can be discharged through drain valve 16 and drain port 8 to ensure the filtration effect of subsequent filter elements.
[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A pre-filter device for an integrated water purification apparatus, characterized by: The utility model provides a filter device, including fixed seat, fixed seat inside both sides are provided with water inlet chamber and water outlet chamber respectively, water inlet chamber and water outlet chamber are linked with water inlet pipe and water outlet pipe respectively, fixed seat bottom is provided with cylinder, cylinder inside is provided with filter core, water inlet chamber bottom communicates with filter core, cylinder bottom is linked with blowdown, cylinder inside is fixedly provided with flush sleeve, flush sleeve is located filter core outside, flush sleeve inside is provided with containing chamber, flush sleeve inner ring surface is equipped with flush hole, flush sleeve top one end is equipped with communicating hole, fixed seat one side is fixedly equipped with flush pipe, fixed seat inside is equipped with communicating chamber still, flush pipe, communicating chamber and communicating hole are sequentially linked.
2. A pre-filter device for an integrated water purification apparatus according to claim 1, characterized in that: The flush pipe is provided with a control valve.
3. A pre-filter device for an integrated water purification apparatus as defined in claim 1, characterized in that: The flush holes are evenly distributed on the inner surface of the flush sleeve.
4. The pre-filter device for an integrated water purification apparatus according to claim 1, wherein: The bottom of the filter core is provided with an opening, and the front end of the cylinder is provided with a blowdown valve. The blowdown valve is used to control the opening and closing of the opening.