High-pressure water removal filter

Abstract

A high-pressure water removal filter, comprising a cylindrical main body, a pressure regulating assembly, and a valve assembly and a filter cartridge arranged in the main body. The lower part of the main body is provided with an air inlet and a drain valve. The pressure regulating assembly is a spring-type pressure regulating assembly. A valve pad cooperates with a spherical valve core, and the valve pad and the spherical valve core are placed in a valve cavity. The bottom of the valve pad is provided with a pad hole connected to a middle channel, and the side surface of the valve pad is provided with a first pad channel connected to a first transverse channel. The upper end of a valve rod abuts against the lower part of the pressure regulating assembly, and the lower end of the valve rod abuts against the spherical valve core. The pressure regulating assembly abuts against the spherical valve core by means of the valve rod, so that the valve core is in contact sealing with the valve pad. Compared with a filter having a conventional diaphragm valve structure, the spherical valve core and the valve pad have strong wear resistance and can work for a long time under high pressure. The structure of the present application is easy to disassemble and assemble, thereby facilitating convenient replacement of the filter cartridge.

Description

A high-pressure water removal filter Technical Field

[0001] This application belongs to the field of air filter technology, specifically relating to a high-pressure water removal filter. Background Technology

[0002] Compressed air is a common power source in industry. Air itself contains impurities such as moisture and dust. Therefore, compressed air after being compressed by an air compressor needs to be filtered before use to prevent impurities and moisture from entering the power equipment and causing malfunctions. Thus, filters are usually installed before the compressed air enters the equipment. Currently, diaphragm valves are commonly used in filters, such as those described in patent CN106268061A, which include a pressure regulating mechanism, a diaphragm valve structure, and a filter structure. The advantages of this type of diaphragm valve are its flexible operation and sensitive response to pressure changes; however, it is typically used in low- to medium-pressure conditions, and because it operates in unclean, high-pressure air, its service life is relatively short.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide a high-pressure water removal filter.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A high-pressure water removal filter includes a barrel-shaped main body, a pressure regulating component, a valve assembly and a filter element disposed within the main body, wherein an air inlet and a drain valve are disposed at the lower part of the main body; the pressure regulating component is a spring-type pressure regulating component.

[0007] The valve assembly includes an upper cover mounted on the upper part of the main body cavity, and a valve stem, a ball valve core, a valve gasket, and a valve seat disposed within the upper cover; the upper cover has a mounting cavity, a middle channel, and a lower channel connected sequentially from top to bottom; the diameter of the middle channel is smaller than the diameter of the mounting cavity and the lower channel; a first transverse channel communicating with the outside is radially opened on the side of the mounting cavity, and an air outlet connected to the first transverse channel is provided on the main body; the pressure regulating assembly is mounted on the upper part of the valve seat;

[0008] The valve seat is installed on the upper part of the upper cover, and the lower part of the valve seat extends into the mounting cavity, so that a valve cavity is formed between the valve seat and the inner wall of the mounting cavity; the valve pad and the ball valve core cooperate and are placed in the valve cavity; the bottom of the valve pad has a pad hole connected to the middle channel, and the side of the valve pad has a first pad channel connected to the first transverse channel; the upper end of the valve stem abuts against the lower part of the pressure regulating assembly, and the lower end of the valve stem abuts against the ball valve core; the pressure regulating assembly presses against the ball valve core through the valve stem, so that the valve core and the valve pad make contact and seal;

[0009] The side of the mounting cavity is provided with a second transverse channel communicating with the outside, and the side of the valve pad is provided with a second pad channel connected to the second transverse channel; the main body is provided with a vent valve corresponding to the second transverse channel.

[0010] The filter element includes a cylindrical outer shell, filter media disposed inside the outer shell, and breathable cover plates pressing on both ends of the filter media. The upper end of the outer shell is threaded onto the lower end of the upper cover. A certain height of water storage space is reserved between the lower end of the filter element and the bottom of the main body cavity.

[0011] The pressure regulating assembly includes an adjusting nut, a spring, and a push rod. The adjusting nut is threaded into the valve seat. The adjusting nut has a through-hole and a central hole, with the central hole located above the moving cavity and the moving cavity being larger than the central hole. The upper end of the push rod passes through the central hole, and the lower end of the push rod is enlarged and presses against the upper end of the valve stem. The spring is clamped between the enlarged end of the push rod and the adjusting nut. By adjusting the spring pressure with the adjusting nut, the sealing pressure between the ball valve core and the valve gasket can be changed, so that the opening pressure of the valve assembly is above 15 MPa.

[0012] The working principle of this application is as follows: High-pressure air enters the filter through the inlet, and a valve assembly is installed at the outlet. A spring presses against the ball valve core via a push rod and valve stem, creating a seal between the ball valve core and the valve gasket. Adjusting the spring pressure using an adjusting nut changes the sealing pressure between the valve core and the valve gasket, thus increasing the internal pressure of the filter. During use, when the pressure in the container connected to the outlet reaches 15 MPa, the gas pushes the valve stem upward, separating the valve stem from the valve core, causing the seal to fail, and making the internal pressure of the filter the same as the container pressure. Maintaining the internal pressure of the filter above 15 MPa increases the air density, allowing water in the air to condense more effectively. The condensed water in the water storage space is discharged through the drain valve and then adsorbed by the filter media inside the filter element, resulting in dry and clean output air. The minimum outlet pressure of the filter can be adjusted to 15 MPa or higher using the pressure regulating assembly. Beneficial effects:

[0013] This application uses a ball valve core and valve gasket to create a hard seal. Compared with conventional diaphragm valve structure filters, the ball valve core and valve gasket are more wear-resistant and can work for a long time under high pressure. The structure of this application is easy to disassemble and assemble, and the filter element can be easily replaced. Attached Figure Description

[0014] Figure 1 is a structural schematic diagram of an embodiment of this application.

[0015] Figure 2 is a magnified view of part A in Figure 1.

[0016] Figure 3 is a schematic diagram of the structure of the top cover according to an embodiment of this application.

[0017] In the diagram: 1. Main body; 2. Filter element; 3. Water storage space; 4. Air inlet; 5. Drain valve; 6. Air outlet; 7. Valve gasket; 8. Ball valve core; 9. Valve stem; 10. Push rod; 11. Spring; 12. Adjusting nut; 13. Valve seat; 14. Top cover; 141. Lower channel; 142. First threaded section; 143. Second threaded section; 144. Third threaded section; 145. First annular groove; 146. Second annular groove; 147. First transverse channel; 15. Air relief valve; 16. Locking ring. Detailed Implementation

[0018] As shown in Figures 1 to 3, a high-pressure water removal filter includes a barrel-shaped main body 1, a pressure regulating component, and a valve assembly and filter element 2 disposed within the main body 1. An air inlet 4 and a drain valve 5 are provided at the lower part of the main body 1; the pressure regulating component is a spring-type pressure regulating component.

[0019] The valve assembly includes an upper cover 14 installed on the upper part of the inner cavity of the main body 1, and a valve stem 9, a ball valve core 8, a valve pad 7, and a valve seat 13 disposed within the upper cover 14; the upper cover 14 has a mounting cavity, a middle channel, and a lower channel 141 connected sequentially from top to bottom; the diameter of the middle channel is smaller than the diameter of the mounting cavity and the lower channel 141; a first transverse channel 147 communicating with the outside is radially opened on the side of the mounting cavity, and an air outlet 6 connected to the first transverse channel 147 is provided on the main body 1; a pressure regulating component is installed on the upper part of the valve seat 13;

[0020] The valve seat 13 is installed on the upper part of the cover 14, and the lower part of the valve seat 13 extends into the mounting cavity, so that the valve seat 13 and the inner wall of the mounting cavity form a valve cavity; the valve pad 7 and the ball valve core 8 are fitted and placed in the valve cavity; the bottom of the valve pad 7 is provided with a pad hole connected to the middle channel, and the side of the valve pad 7 is provided with a first pad channel connected to the first transverse channel 147; the upper end of the valve stem 9 rests on the lower part of the pressure regulating assembly, and the lower end of the valve stem 9 abuts against the ball valve core 8; the pressure regulating assembly presses against the ball valve core 8 through the valve stem 9, so that the valve core and the valve pad 7 make contact and hard seal.

[0021] The ball valve core 8 is a solid ceramic ball; the valve gasket 7 is made of stainless steel and has a hard seal with the ball valve core 8; compared with the conventional diaphragm valve structure, the valve core structure of this application is more robust and durable.

[0022] The gasket hole is a stepped hole that is larger at the top and smaller at the bottom. The upper edge of the stepped hole is inclined with a contact surface that fits the surface of the ball valve core 8. The contact surface has a certain width, so that there is a large contact area between the ball valve core 8 and the stepped hole. The hardness of the ball valve core 8 is greater than that of the valve gasket 7. The contact surface can be a flat surface or a curved surface. During operation, the ball valve core and the valve gasket 7 are squeezed together to deform the valve gasket 7 and make a seal.

[0023] The bottom of the ball valve core 8 is submerged in the stepped hole, and the depth of the ball valve core 8 entering the stepped hole is 14% to 29% of the diameter of the ball valve core 8; specifically, it is about 21%.

[0024] The lower end of the valve stem 9 is provided with an enlarged top block portion with a diameter larger than that of the ball valve core 8. The side of the top block portion facing the ball valve core 8 is provided with a push ball groove. The center line of the push ball groove is collinear with the valve stem 9. The push ball groove is frustum-shaped or arc-shaped, which causes the ball valve core 8 to automatically align with the center line of the valve stem 9.

[0025] The side of the mounting cavity is provided with a second transverse channel that communicates with the outside. The side of the valve pad 7 is provided with a second pad channel that connects to the second transverse channel. The main body 1 is provided with a vent valve 15 that corresponds to the second transverse channel.

[0026] The filter element 2 includes a cylindrical outer shell, filter media disposed inside the outer shell, and breathable cover plates pressed onto both ends of the filter media. The upper end of the outer shell is threaded onto the lower end of the upper cover 14. A water storage space 3 of a certain height is reserved between the lower end of the filter element 2 and the bottom of the inner cavity of the main body 1. The filter media can be conventional filter media of high pressure filters, such as molecular sieves, activated carbon, glass fiber filter media, etc.

[0027] The lower middle part of the valve seat 13 is threadedly engaged with the upper cover 14; the lower part of the upper cover 14 is threadedly engaged with the upper part of the inner cavity of the main body 1, making it easy to disassemble and assemble. Specifically, the inner wall of the mounting cavity of the upper cover 14 is provided with a first threaded section 142 for mounting the valve seat 13, and the lower part of the upper cover 14 is provided with a second threaded section 143 for threaded connection with the top of the inner cavity of the main body 1 and a third threaded section 144 for mounting the filter element 2. The third threaded section 144 is located below the second threaded section 143, and a first annular groove 145 for positioning the sealing ring is provided between the third threaded section 144 and the second threaded section 143. At least two second annular grooves 146 are provided at intervals in the middle of the upper cover 14. Sealing rings are provided between the upper cover 14 and the inner cavity of the main body 1, between the valve seat 13 and the upper cover 14, between the valve gasket 7 and the upper cover 14, and between the valve stem 9 and the valve seat 13 to enhance sealing and prevent air leakage.

[0028] The pressure regulating assembly includes an adjusting nut 12, a spring 11, and a push rod 10. The adjusting nut 12 is threadedly installed inside the valve seat 13, and a locking ring 16 for preventing loosening is also threaded onto the adjusting nut 12. The adjusting nut 12 has a through-hole and a central hole, with the central hole located at the upper part of the moving cavity and the size of the moving cavity being larger than the central hole. The upper end of the push rod 10 passes through the central hole, and the lower end of the push rod 10 is enlarged and presses against the upper end of the valve stem 9. The spring 11 is clamped between the enlarged end of the push rod 10 and the adjusting nut 12. In use, the sealing pressure between the ball valve core 8 and the valve gasket 7 can be changed by adjusting the pressure of the spring 11 through the adjusting nut 12, so that the opening pressure of the valve assembly is above 15 MPa. This application is for use in a 15 MPa high-pressure environment. The spring 11 can be a suitable type of butterfly spring, cylindrical spring, or other spring 11 that meets the requirements.

Claims

1. A high-pressure water removal filter, comprising a barrel-shaped body, a pressure regulating assembly, and a valve assembly and a filter element disposed within the body, characterized in that: The lower part of the main body is provided with an air inlet and a drain valve; the pressure regulating component is a spring-type pressure regulating component; The valve assembly includes an upper cover mounted on the upper part of the main body cavity, and a valve stem, a ball valve core, a valve gasket, and a valve seat disposed within the upper cover; the upper cover has a mounting cavity, a middle channel, and a lower channel connected sequentially from top to bottom; the diameter of the middle channel is smaller than the diameter of the mounting cavity and the lower channel; a first transverse channel communicating with the outside is radially opened on the side of the mounting cavity, and an air outlet connected to the first transverse channel is provided on the main body; the pressure regulating assembly is mounted on the upper part of the valve seat; The valve seat is installed on the upper part of the upper cover, and the lower part of the valve seat extends into the mounting cavity, so that a valve cavity is formed between the valve seat and the inner wall of the mounting cavity; the valve pad and the ball valve core cooperate and are placed in the valve cavity; the bottom of the valve pad has a pad hole connected to the middle channel, and the side of the valve pad has a first pad channel connected to the first transverse channel; the upper end of the valve stem abuts against the lower part of the pressure regulating assembly, and the lower end of the valve stem abuts against the ball valve core; the pressure regulating assembly presses against the ball valve core through the valve stem, so that the valve core and the valve pad make contact and seal; The side of the mounting cavity is provided with a second transverse channel communicating with the outside, and the side of the valve pad is provided with a second pad channel connected to the second transverse channel; the main body is provided with a vent valve corresponding to the second transverse channel. The filter element includes a cylindrical outer shell, filter media disposed inside the outer shell, and breathable cover plates pressing on both ends of the filter media. The upper end of the outer shell is threaded onto the lower end of the upper cover. A certain height of water storage space is reserved between the lower end of the filter element and the bottom of the main body cavity. The pressure regulating assembly includes an adjusting nut, a spring, and a push rod. The adjusting nut is threaded into the valve seat. The adjusting nut has a through-hole and a central hole, with the central hole located above the moving cavity and the size of the moving cavity being larger than the central hole. The upper end of the push rod passes through the central hole, and the lower end of the push rod is enlarged and presses against the upper end of the valve stem. The spring is clamped between the enlarged end of the push rod and the adjusting nut. By adjusting the spring pressure with the adjusting nut, the sealing pressure between the ball valve core and the valve can be changed, so that the opening pressure of the valve assembly is above 15 MPa.

2. The high-pressure water removal filter according to claim 1, characterized in that: The gasket hole is a stepped hole that is larger at the top and smaller at the bottom, and the upper edge of the stepped hole is inclined with a close-fitting surface that is adapted to the surface of the ball valve core.

3. The high-pressure water removal filter according to claim 2, characterized in that: The bottom of the ball valve core is submerged in the stepped hole, and the depth to which the ball valve core enters the stepped hole is 14% to 29% of the diameter of the ball valve core.

4. The high-pressure water removal filter according to claim 1, characterized in that: The lower end of the valve stem is provided with an enlarged top block portion with a diameter larger than that of the ball valve core, and the side of the top block portion facing the ball valve core is provided with a ball pusher groove.

5. The high-pressure water removal filter according to claim 4, characterized in that: The ball-pushing groove is frustum-shaped or arc-shaped, and the center line of the ball-pushing groove is collinear with the valve stem.

6. The high-pressure water removal filter according to claim 1, characterized in that: The ball valve core is a solid ceramic ball, and the valve gasket is made of stainless steel.

7. The high-pressure water removal filter according to claim 1, characterized in that: The lower middle part of the valve seat is threaded into the upper cover, and the lower part of the upper cover is threaded into the upper part of the main body cavity; sealing rings are provided between the upper cover and the main body cavity, between the valve seat and the upper cover, between the valve gasket and the upper cover, and between the valve stem and the valve seat.

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