Pressure tank water filtration structure

Abstract

The utility model provides a kind of pressure tank water filtering structure, belong to mechanical technical field.It has solved the problem of poor filtering accuracy of existing pressure tank.The pressure tank water filtering structure, pressure tank includes tank body, cover plate and the air bag being set in tank body, air bag mouth is along clamped between tank body and cover plate, water filtering structure includes vertically arranged inlet pipe, inlet pipe upper end passes through cover plate and extends into air bag, inlet pipe top is closed, and upper end side wall is equipped with drain, annular locating seat is formed on the inner wall of inlet pipe, and tubular connector and columnar copper sintered filter element are further equipped in inlet pipe, connector upper end is screwed on locating seat, copper sintered filter element upper end is inserted in connector lower end, and the lower end of copper sintered filter element extends out of inlet pipe.The pressure tank water filtering structure has high filtering accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a pressure tank, particularly a pressure tank water filtration structure. Background Technology

[0002] A pressure tank is a device that uses the compressibility of air inside the tank to regulate and store water volume and maintain the required pressure. Therefore, it is also called a pneumatic water supply device, and its function is equivalent to a water tower and a high-level water tank.

[0003] An existing pressure tank, such as the small pressure tank previously proposed by the applicant (application number: 202220503354.8), includes a tank body, a cover on the tank body, an air nozzle installed on the tank body, and an air bladder inside the tank body. The air bladder expands into a barrel shape, and the edge of the barrel opening is pressed between the cover and the tank body. The cover has a through hole facing the inner cavity of the air bladder. A water inlet pipe is sealed and fixed inside the through hole, and the inner end of the water inlet pipe extends into the air bladder. The water inlet pipe is characterized in that the inner end of the water inlet pipe is closed, and the inner end face of the water inlet pipe is flat. A drain hole is formed on the inner side wall of the water inlet pipe. A filter pipe coaxial with the water inlet pipe is detachably fixed inside the water inlet pipe. The two ends of the filter pipe are a closed end and an open end, respectively, and the closed end is located between the open end and the air nozzle. The side wall of the closed end is densely covered with filter holes that penetrate radially along the filter pipe, and the filter holes are connected to the aforementioned drain holes. A seal is formed between the outer wall of the open end and the inner wall of the water inlet pipe.

[0004] The pressure tank described above uses a filter structure to remove impurities from the water. However, its filtration accuracy is not very high, and some impurities may enter the air bladder, affecting the lifespan and operational stability of the pressure tank. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a pressure tank water filtration structure with high filtration accuracy.

[0006] The purpose of this utility model can be achieved through the following technical solution: a pressure tank water filtration structure, the pressure tank including a tank body, a cover plate and an air bladder disposed inside the tank body, and the air bladder opening is clamped between the tank body and the cover plate. This water filtration structure includes a vertically arranged water inlet pipe, the upper end of the water inlet pipe passing through the cover plate and extending into the air bladder, the top of the water inlet pipe being closed and a drain outlet being provided on the upper side wall. The characteristic is that a ring-shaped positioning seat is formed on the inner wall of the water inlet pipe, and the positioning seat and the water inlet pipe are coaxially arranged; a tubular connector and a columnar copper sintered filter element are also provided inside the water inlet pipe, the upper end of the connector being screwed onto the positioning seat, the upper end of the copper sintered filter element being inserted into the lower end of the connector, and the lower end of the copper sintered filter element extending out of the water inlet pipe.

[0007] During use, the liquid flowing into the inlet pipe is filtered by the copper sintered filter element and then discharged into the air bag through the connector and drain outlet in sequence.

[0008] Copper sintered filter elements form uniform micron-sized pores through a high-temperature sintering process, which can effectively intercept fine particles. Its filtration accuracy is significantly higher than that of existing filter screens, thus effectively preventing impurities from entering the air chamber and improving the working stability and lifespan of the pressure tank.

[0009] Meanwhile, the lower end of the copper sintered filter element extends out of the water inlet pipe, and the connector is threadedly connected to the positioning seat. In this way, the copper sintered filter element and the connector can be removed as a whole by rotation, which is convenient for cleaning or replacing the copper sintered filter element and for subsequent maintenance.

[0010] In the aforementioned pressure tank filtration structure, the axial cross-section of the connector is approximately inverted T-shaped. The connector consists of a positioning body and a connecting body, both of which are tubular. The positioning body is threadedly connected to the positioning seat. The shape and size of the copper sintered filter element match the inner bore of the connecting body, and the upper end of the copper sintered filter element is embedded in the connecting body. This design effectively increases the volume of the copper sintered filter element and improves filtration efficiency.

[0011] In the pressure tank filtration structure described above, the top surface of the copper sintered filter element presses against the inner wall of the connector body, allowing the copper sintered filter element to be pressed into place in one go, which facilitates assembly.

[0012] In the aforementioned pressure tank filtration structure, an annular groove is provided on the outer wall of the positioning body, and an O-ring is provided in the annular groove. The outer circumferential surface of the O-ring contacts and seals with the inner surface of the positioning seat to enhance the sealing strength between the positioning body and the positioning seat, ensuring that the liquid completely passes through the copper sintered filter element into the joint.

[0013] In the aforementioned pressure tank filtration structure, the outer wall of the connector presses against the bottom surface of the positioning seat, allowing the connector to be screwed into place in one go, facilitating assembly and disassembly.

[0014] In the pressure tank filtration structure described above, the lower end of the water inlet pipe is provided with an external thread to facilitate connection of the water inlet pipe to an external water supply pipeline.

[0015] Compared with existing technologies, the pressure tank filtration structure of this device has the following advantages: 1. Copper sintered filter elements form uniform micron-sized pores through a high-temperature sintering process, which can effectively intercept fine particles. Its filtration accuracy is significantly higher than that of existing filter screens, thus effectively preventing impurities from entering the air chamber and improving the working stability and lifespan of the pressure tank.

[0016] 2. The lower end of the copper sintered filter element extends out of the water inlet pipe, and the connector is threadedly connected to the positioning seat. This allows the copper sintered filter element and the connector to be removed as a whole by rotation, making it easy to clean or replace the copper sintered filter element and facilitate subsequent maintenance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of a pressure tank.

[0018] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0019] In the diagram, 1 is the tank body; 2 is the cover plate; 3 is the air bladder; 4 is the water inlet pipe; 4a is the drain outlet; 4b is the positioning seat; 5 is the connector; 5a is the positioning body; 5b is the connecting body; 6 is the copper sintered filter element; and 7 is the O-ring. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 As shown, in the pressure tank filtration structure, the pressure tank includes a tank body 1, a cover plate 2, and an air bladder 3 disposed inside the tank body 1. The cover plate 2 is disposed below the tank body 1 and the two are fixedly connected; the air bladder 3 is disposed with its opening facing downwards, and the edge of the air bladder 3 is clamped between the tank body 1 and the cover plate 2.

[0022] The pressure tank filtration structure includes a vertically arranged inlet pipe 4. The upper end of the inlet pipe 4 passes through the cover plate 2 and extends into the air bladder 3, and the inlet pipe 4 is welded and fixedly connected to the cover plate 2. Figure 1 and Figure 2 As shown, the inlet pipe 4 is closed at the top and has a drain outlet 4a on its upper side wall. Preferably, the drain outlet 4a is an arc shape coaxial with the inlet pipe 4. A ring-shaped positioning seat 4b is formed on the inner wall of the inlet pipe 4, and the positioning seat 4b is coaxial with the inlet pipe 4. The inlet pipe 4 also has a tubular connector 5 and a columnar copper sintered filter element 6. The upper end of the connector 5 is screwed onto the positioning seat 4b, the upper end of the copper sintered filter element 6 is inserted into the lower end of the connector 5, and the lower end of the copper sintered filter element 6 extends out of the inlet pipe 4.

[0023] During use, the liquid flowing into the inlet pipe 4 is filtered by the copper sintered filter element 6 and then discharged into the air bag 3 through the connector 5 and the drain port 4a in sequence.

[0024] The copper sintered filter element 6 forms uniform micron-level pores through a high-temperature sintering process, which can effectively intercept fine particles. Its filtration accuracy is significantly higher than that of existing filter screens, thus effectively preventing impurities from entering the air bladder 3 and improving the working stability and lifespan of the pressure tank.

[0025] Meanwhile, the lower end of the copper sintered filter element 6 extends out of the water inlet pipe 4, and the connector 5 is threadedly connected to the positioning seat 4b. In this way, the entire assembly of the copper sintered filter element 6 and the connector 5 can be removed by rotation, which is convenient for cleaning or replacing the copper sintered filter element 6 and for subsequent maintenance.

[0026] In this embodiment, The connector 5 is a one-piece structure, and its axial cross-section is approximately inverted T-shaped. The connector 5 consists of a tubular positioning body 5a and a connecting body 5b, with the positioning body 5a positioned above the connecting body 5b. The positioning body 5a and the connecting body 5b are coaxially arranged and their inner holes are connected. The positioning body 5a is threadedly connected to the positioning seat 4b. The shape and size of the copper sintered filter element 6 match the inner hole of the connecting body 5b, and the upper end of the copper sintered filter element 6 is embedded within the connecting body 5b. This design effectively increases the volume of the copper sintered filter element 6 and improves filtration efficiency.

[0027] To further explain, the top surface of the copper sintered filter element 6 presses against the inner wall of the connector 5b, allowing the copper sintered filter element 6 to be pressed into place in one go, which facilitates assembly. The outer wall of the connector 5b presses against the bottom surface of the positioning seat 4b, allowing the connector 5 to be screwed into place in one go, which facilitates disassembly and assembly.

[0028] Furthermore, such as Figure 2 As shown, an annular groove is provided on the outer wall of the positioning body 5a, and the annular groove and the water inlet pipe 4 are coaxially arranged. An O-ring 7 is provided in the annular groove, and the outer circumferential surface of the O-ring 7 contacts and seals with the inner surface of the positioning seat 4b to enhance the sealing strength between the positioning body 5a and the positioning seat 4b, and ensure that the liquid completely passes through the copper sintered filter element 6 and enters the connector 5.

[0029] In the actual product, the lower end of the water inlet pipe 4 is provided with external threads on its outer wall, which makes it convenient for the water inlet pipe 4 to be connected to the external water supply pipeline.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A pressure tank water filtration structure, wherein the pressure tank includes a tank body (1), a cover plate (2), and an air bladder (3) disposed inside the tank body (1), and the opening edge of the air bladder (3) is clamped between the tank body (1) and the cover plate (2), the water filtration structure includes a vertically arranged water inlet pipe (4), the upper end of the water inlet pipe (4) passes through the cover plate (2) and extends into the air bladder (3), the top of the water inlet pipe (4) is closed, and a drain outlet (4a) is provided on the upper side wall, characterized in that, The inner wall of the water inlet pipe (4) is formed with a ring-shaped positioning seat (4b), and the positioning seat (4b) and the water inlet pipe (4) are coaxially arranged; the water inlet pipe (4) is also provided with a tubular connector (5) and a columnar copper sintered filter element (6). The upper end of the connector (5) is screwed onto the positioning seat (4b), the upper end of the copper sintered filter element (6) is inserted into the lower end of the connector (5), and the lower end of the copper sintered filter element (6) extends out of the water inlet pipe (4).

2. The pressure tank filtration structure according to claim 1, characterized in that, The axial cross section of the above-mentioned connector (5) is approximately inverted T-shaped. The connector (5) consists of a positioning body (5a) and a connecting body (5b), both of which are tubular. The positioning body (5a) is threadedly connected to the positioning seat (4b). The shape and size of the copper sintered filter element (6) are matched with the inner hole of the connecting body (5b), and the upper end of the copper sintered filter element (6) is embedded in the connecting body (5b).

3. The pressure tank filtration structure according to claim 2, characterized in that, The top surface of the copper sintered filter element (6) presses against the inner wall of the connector (5b).

4. The pressure tank filtration structure according to claim 2, characterized in that, An annular groove is provided on the outer wall of the positioning body (5a), and an O-ring (7) is provided in the annular groove. The outer circumferential surface of the O-ring (7) is in contact with and sealed to the inner surface of the positioning seat (4b).

5. The pressure tank filtration structure according to claim 2, characterized in that, The outer wall of the connector (5b) presses against the bottom surface of the positioning seat (4b).

6. The pressure tank filtration structure according to claim 1, characterized in that, The lower end of the water inlet pipe (4) is provided with external threads.

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