High-pressure water removal filter

Abstract

The utility model belongs to the field of air filters, and particularly relates to a high-pressure dewatering filter which comprises a barrel-shaped main body, a pressure regulating assembly, a valve assembly and a filter element, the valve assembly and the filter element are arranged in the main body, and an air inlet and a drain valve are arranged on the lower portion of the main body. The pressure regulating assembly is a spring type pressure regulating assembly; the valve pad and the ball valve element are matched and placed in the valve cavity. A pad hole connected with the middle channel is formed in the bottom of the valve pad, and a first pad channel connected with the first transverse channel is formed in the side face of the valve pad. The upper end of the valve rod abuts against the lower portion of the pressure adjusting assembly, and the lower end of the valve rod abuts against the ball valve element. The pressure regulating assembly abuts against the ball valve element through the valve rod, so that the valve element and the valve pad are in contact sealing. Compared with a conventional filter of a diaphragm valve structure, the spherical valve element and the valve pad are high in abrasion resistance and can work for a long time under high pressure. In addition, the structure is easy to disassemble and assemble, and the filter element can be conveniently replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of air filters, and in particular relates to a high-pressure water removal filter. Background Art

[0002] Compressed air is a commonly used power source in industry. The air itself also contains impurities such as water vapor and dust. Therefore, the compressed air compressed by the air compressor needs to be filtered before use to prevent impurities and moisture from entering the power equipment and causing malfunctions. Therefore, a filter is usually installed before the compressed air enters the equipment. The commonly used filter currently uses a diaphragm valve, such as the one in patent CN106268061A, which includes a pressure regulating mechanism, a diaphragm valve structure and a filter structure. The advantage of this diaphragm valve is that it is flexible in action and sensitive to pressure changes, but it is usually used in medium and low pressure conditions. And because it is used in non-clean high-pressure air, its service life is relatively short.

[0003] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-pressure water removal filter.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A high-pressure water removal filter comprises a barrel-shaped main body, a pressure regulating assembly, a valve assembly and a filter element arranged in the main body, an air inlet and a drain valve are arranged at the lower part of the main body; the pressure regulating assembly is a spring-type pressure regulating assembly;

[0007] The valve assembly includes an upper cover mounted on the upper portion of the inner cavity of the main body, and a valve stem, a spherical valve core, a valve gasket, and a valve seat arranged in the upper cover; the upper cover is connected to an installation cavity, a middle channel, and a lower channel from top to bottom; the diameter of the middle channel is smaller than that of the installation cavity and the lower channel; a first transverse channel connected to the outside is radially opened on the side of the installation 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 portion 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 installation cavity, so that a valve cavity is formed between the valve seat and the inner wall of the installation cavity; the valve gasket and the spherical valve core are matched and placed in the valve cavity; the bottom of the valve gasket is provided with a gasket hole connected to the middle channel, and the side of the valve gasket is provided with a first gasket channel connected to the first transverse channel; the upper end of the valve stem is pressed against the lower part of the pressure regulating assembly, and the lower end of the valve stem is pressed against the spherical valve core; the pressure regulating assembly presses the spherical valve core through the valve stem, so that the valve core and the valve gasket are in contact and sealed.

[0009] Furthermore, the gasket hole is a stepped hole that is larger at the top and smaller at the bottom, and a close-fitting surface that matches the surface of the spherical valve core is obliquely provided at the upper edge of the stepped hole.

[0010] Furthermore, the bottom of the spherical valve core is immersed in the stepped hole, and the depth of the spherical valve core entering the stepped hole is 14% to 29% of the diameter of the spherical valve core; preferably, it is about 21%.

[0011] Furthermore, the lower end of the valve stem is provided with an enlarged top block portion with a diameter larger than that of the spherical valve core, and a ball pushing groove is provided on a side of the top block portion facing the spherical valve core.

[0012] Furthermore, the ball pushing groove is of a truncated cone type or an arc-shaped type, and the center line of the ball pushing groove is collinear with the valve stem.

[0013] Furthermore, the spherical valve core is a solid ceramic ball, and the valve gasket is made of stainless steel. The hardness of the spherical valve core is greater than the hardness of the valve gasket. The spherical valve core and the valve gasket are squeezed to deform the valve gasket, and the sealing surface is matched to form a hard seal.

[0014] Furthermore, a second transverse channel communicating with the outside is provided on the side of the installation cavity, and a second pad channel connected to the second transverse channel is provided on the side of the valve pad; and an air release valve corresponding to the second transverse channel is provided on the main body.

[0015] Furthermore, the filter element includes a cylindrical outer shell, a filter material arranged in the outer shell and a breathable cover plate pressed on both ends of the filter material, and the upper end of the outer shell is threadedly connected to the lower end of the upper cover; a water storage space of a certain height is reserved between the lower end of the filter element and the bottom of the inner cavity of the main body.

[0016] Furthermore, the middle and lower parts of the pressure regulating assembly are threadedly matched with the upper cover, and the lower part of the upper cover is threadedly matched with the upper part of the inner cavity of the main body; sealing rings are provided between the upper cover and the inner cavity of the main body, between the pressure regulating assembly and the upper cover, between the valve gasket and the upper cover, and between the valve stem and the upper cover.

[0017] Furthermore, the pressure regulating assembly includes an adjusting nut, a spring and a push rod; the adjusting nut is threadedly installed in the valve seat; the adjusting nut is provided with an active cavity and a middle hole, the middle hole is located at the upper part of the active cavity, and the size of the active cavity is larger than the middle hole; the upper end of the push rod is passed through the middle hole, the lower end of the push rod is enlarged and presses against the upper end of the valve stem, and the spring is clamped between the enlarged end of the push rod and the adjusting nut; adjusting the spring pressure by adjusting the nut can change the sealing pressure of the spherical valve core and the valve gasket, so that the opening pressure of the valve assembly is above 15Mpa.

[0018] The working principle of the present invention is as follows: high-pressure air enters the interior of the filter through the air inlet, and a valve assembly is provided at the air outlet. The spring presses against the spherical valve core through the push rod and the valve stem, so that the spherical valve core and the valve gasket are sealed. The spring pressure is adjusted by using the adjusting nut to change the sealing pressure between the valve core and the valve gasket, thereby increasing the internal pressure of the filter. During use, when the pressure of the container connected to the air outlet reaches 15Mpa, the gas will push 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; controlling the pressure inside the filter to above 15Mpa can increase the density of the air, better condense the water in the air, and the water condensed in the water storage space is discharged through the drain valve; it is then adsorbed by the filter material inside the filter element, making the output air dry and clean; the minimum outlet pressure of the filter can be adjusted to 15Mpa or above through the pressure regulating assembly.

[0019] The beneficial effects of the utility model are:

[0020] The utility model is a high-pressure filter with an operating pressure greater than or equal to 15Mpa. The utility model adopts a spherical valve core and a valve gasket to produce a hard seal. Compared with the filter with a conventional diaphragm valve structure, the spherical valve core and the valve gasket themselves have strong wear resistance and can work for a long time under high pressure. In addition, the structure of the utility model is easy to disassemble and assemble, and the filter element can be conveniently replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0023] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0024] Figure 3 This is a schematic structural diagram of the upper cover of an embodiment of the present utility model.

[0025] In the figure: 1-main body, 2-filter element, 3-water storage space, 4-air inlet, 5-drain valve, 6-air outlet, 7-valve pad, 8-ball valve core, 9-valve stem, 10-top rod, 11-spring, 12-adjusting nut, 13-valve seat, 14-upper cover, 141-lower channel, 142-first thread segment, 143-second thread segment, 144-third thread segment, 145-first annular groove, 146-second annular groove, 147-cross channel, 15-air relief valve, 16-locking ring. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0029] like Figures 1 to 3 As shown, a high-pressure water removal filter includes a barrel-shaped main body 1, a pressure regulating assembly, and a valve assembly and a filter element 2 arranged in the main body 1. The lower part of the main body 1 is provided with an air inlet 4 and a drain valve 5; the pressure regulating assembly is a spring 11 type pressure regulating assembly;

[0030] The valve assembly includes an upper cover 14 mounted on the upper portion of the inner cavity of the main body 1, and a valve stem 9, a spherical valve core 8, a valve gasket 7, and a valve seat 13 disposed within the upper cover 14. The upper cover 14 sequentially connects an installation cavity, a middle channel, and a lower channel 141 from top to bottom. The diameter of the middle channel is smaller than that of the installation cavity and the lower channel 141. A first transverse channel 147 communicating with the outside is radially opened on the side of the installation cavity. The main body 1 is provided with an air outlet 6 connected to the first transverse channel 147. The pressure regulating assembly is mounted on the upper portion of the valve seat 13.

[0031] The valve seat 13 is installed on the upper part of the upper cover 14, and the lower part of the valve seat 13 extends into the installation cavity, so that a valve cavity is formed between the valve seat 13 and the inner wall of the installation cavity; the valve gasket 7 and the spherical valve core 8 are matched and placed in the valve cavity; the bottom of the valve gasket 7 is provided with a gasket hole connected to the middle channel, and the side of the valve gasket 7 is provided with a first gasket channel connected to the first transverse channel 147; the upper end of the valve stem 9 is pressed against the lower part of the pressure regulating assembly, and the lower end of the valve stem 9 is pressed against the spherical valve core 8; the pressure regulating assembly presses the spherical valve core 8 through the valve stem 9, so that the valve core and the valve gasket 7 are in contact with each other and hard-sealed.

[0032] Furthermore, the spherical valve core 8 is a solid ceramic ball; the valve gasket 7 is made of stainless steel and is hard-sealed with the spherical valve core 8; compared with the conventional diaphragm valve structure, the valve core structure of the present invention is stronger and more durable.

[0033] Further, such as Figures 1 to 2 As shown, the gasket hole is a stepped hole that is larger at the top and smaller at the bottom. A close-fitting surface that matches the surface of the spherical valve core 8 is obliquely provided at the upper edge of the stepped hole. The close-fitting surface has a certain width, so that there is a larger contact area between the spherical valve core 8 and the stepped hole; the hardness of the spherical valve core 8 is greater than that of the valve gasket 7. The close-fitting surface can be a plane or an arc surface. During operation, the valve gasket 7 is deformed by squeezing between the spherical valve core and the valve gasket 7, and the fit produces a seal.

[0034] Further, such as Figures 1 to 2 As shown, the bottom of the spherical valve core 8 is immersed in the stepped hole, and the depth of the spherical valve core 8 entering the stepped hole is 14% to 29% of the diameter of the spherical valve core 8; preferably, it is about 21%.

[0035] Further, such as Figures 1 to 2 As shown, the lower end of the valve stem 9 is provided with an enlarged top block portion with a diameter larger than that of the spherical valve core 8, and a ball pushing groove is provided on the side of the top block portion facing the spherical valve core 8; the center line of the ball pushing groove is colinear with the valve stem 9, and the ball pushing groove is a frustum or arc surface type, which prompts the spherical valve core 8 to automatically align with the center line of the valve stem 9.

[0036] Further, such as Figures 1 to 3 As shown, a second transverse channel 147 communicating with the outside is further provided on the side of the installation cavity, and a second pad channel connected to the second transverse channel 147 is provided on the side of the valve pad 7; an air release valve 15 corresponding to the second transverse channel 147 is provided on the main body 1.

[0037] Further, such as Figure 1As shown, the filter element 2 includes a cylindrical shell, a filter material arranged in the shell and a breathable cover plate pressed on both ends of the filter material, and the upper end of the shell is threadedly connected to 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 material can be a conventional filter material of a high-pressure filter, such as molecular sieve, activated carbon, glass fiber filter material, etc.

[0038] Further, such as Figure 1 、 Figure 3 As shown, the middle and lower portions of the pressure regulating assembly are threadedly engaged with the upper cover 14; the lower portion of the upper cover 14 is threadedly engaged with the upper portion of the inner cavity of the main body 1, making it easy to assemble and disassemble. Specifically, a first threaded section 142 is provided on the inner wall of the mounting cavity of the upper cover 14 for mounting the valve seat 13. The lower portion of the upper cover is provided with a second threaded section 143 for threaded connection with the top portion 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 disposed below the second threaded section 143, and a first annular groove 145 for locating a sealing ring is provided between the third and second threaded sections 144, 143. At least two second annular grooves 146 are spaced apart in the middle of the upper cover. Sealing rings are provided between the upper cover 14 and the inner cavity of the main body 1, between the pressure regulating assembly and the upper cover 14, between the valve gasket 7 and the upper cover 14, and between the valve stem 9 and the upper cover 14 to enhance sealing and prevent air leakage.

[0039] Further, such as Figure 1 As shown, the pressure regulating assembly includes an adjusting nut 12, a spring 11, and a push rod 10; the adjusting nut 12 is threadedly mounted in the valve seat 13, and a locking ring 16 is threadedly sleeved on the adjusting nut 12 for preventing loosening; the adjusting nut 12 is provided with an active cavity and a central hole, the central hole being located above the active cavity and larger than the central hole; the upper end of the push rod 10 is inserted into the central hole, the lower end of the push rod 10 is enlarged and presses against the upper end of the valve stem 9, and the spring 11 is clamped between the enlarged end of the push rod 10 and the adjusting nut 12; during use, the sealing pressure between the ball valve core 8 and the valve gasket 7 can be adjusted by adjusting the pressure of the spring 11 through the adjusting nut 12, so that the opening pressure of the valve assembly is above 15Mpa. The present utility model is applied in a high-pressure environment of 15Mpa, and the spring 11 can be a butterfly spring of a suitable model, a cylindrical spring, or other spring 11 that can meet the application requirements.

[0040] This utility model is primarily designed for operating pressures greater than 15 MPa. Its key technical feature is that gas is not output through the filter until it reaches 15 MPa, ensuring that the filter's operating pressure is greater than or equal to 15 MPa. Controlling the pressure inside the filter above 15 MPa increases the density of the air, allowing for better condensation of water in the air. Water condensed in the water storage space 3 is then discharged through the drain valve 5. The water is then adsorbed by the filter material inside the filter element 2, resulting in dry and clean output air. The valve assembly of this utility model is designed with a spherical valve core 8 and a valve gasket 7, making the device more durable. The pressure regulating assembly's upper cover 14 is easily disassembled and assembled, allowing for convenient replacement of the filter element 2.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A high-pressure water removal filter, comprising a barrel-shaped main body (1), a pressure regulating assembly, a valve assembly and a filter element (2) arranged in the main body (1), characterized in that: An air inlet (4) and a drain valve (5) are provided at the lower portion of the main body (1); the pressure regulating assembly is a spring (11) type pressure regulating assembly; The valve assembly comprises an upper cover (14) mounted on the upper part of the inner cavity of the main body (1), and a valve stem (9), a spherical valve core (8), a valve pad (7) and a valve seat (13) arranged in the upper cover (14); the upper cover (14) is connected with an installation cavity, a middle channel and a lower channel (141) in sequence from top to bottom; the diameter of the middle channel is smaller than the diameters of the installation cavity and the lower channel (141); a first transverse channel (147) is radially opened on the side of the installation cavity to communicate with the outside, and an air outlet (6) connected to the first transverse channel (147) is provided on the main body (1); the pressure regulating assembly is mounted on the upper part of the valve seat (13); The valve seat (13) is installed on the upper part of the upper cover (14), and the lower part of the valve seat (13) extends into the installation cavity, so that a valve cavity is formed between the valve seat (13) and the inner wall of the installation cavity; the valve pad (7) and the spherical valve core (8) are matched 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 pad hole is a stepped hole with a larger upper part and a smaller lower part, and a close-fitting surface adapted to the surface of the spherical valve core (8) is inclined at the upper edge of the stepped hole; 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) is pressed against the lower part of the pressure regulating assembly, and the lower end of the valve stem (9) is pressed against the spherical valve core (8); the hardness of the spherical valve core (8) is greater than the hardness of the valve pad (7), and the pressure regulating assembly presses against the spherical valve core (8) through the valve stem (9), and the spherical valve core (8) and the valve pad (7) are squeezed to deform the valve pad (7), and a sealing surface is formed by the fit, thereby forming a hard seal.

2. The high-pressure water removal filter according to claim 1, characterized in that: The bottom of the spherical valve core (8) is immersed in the stepped hole, and the depth of the spherical valve core (8) entering the stepped hole is 14% to 29% of the diameter of the spherical valve core (8).

3. The high-pressure water removal filter according to claim 1, characterized in that: The lower end of the valve stem (9) is provided with an enlarged top block portion having a diameter larger than that of the spherical valve core (8), and a ball pushing groove is provided on a side of the top block portion facing the spherical valve core (8).

4. The high-pressure water removal filter according to claim 3, characterized in that: The ball pushing groove is of a truncated cone or arcuate shape, and the center line of the ball pushing groove is collinear with the valve stem (9).

5. The high-pressure water removal filter according to claim 1, characterized in that: The spherical valve core (8) is a solid ceramic ball, and the valve pad (7) is made of stainless steel.

6. The high-pressure water removal filter according to claim 1, characterized in that: A second transverse channel (147) communicating with the outside is further provided on the side of the installation cavity, and a second pad channel connected to the second transverse channel (147) is provided on the side of the valve pad (7); and an air release valve (15) corresponding to the second transverse channel (147) is provided on the main body (1).

7. The high-pressure water removal filter according to claim 1, characterized in that: The filter core (2) comprises a cylindrical outer shell, a filter material arranged in the outer shell, and a breathable cover plate pressed onto both ends of the filter material. The upper end of the outer shell is threadedly sleeved on 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 core (2) and the bottom of the inner cavity of the main body (1).

8. The high-pressure water removal filter according to claim 1, characterized in that: The middle and lower parts of the pressure regulating assembly are threadedly engaged with the upper cover (14), and the lower part of the upper cover (14) is threadedly engaged with the upper part of the inner cavity of the main body (1); sealing rings are provided between the upper cover (14) and the inner cavity of the main body (1), between the pressure regulating assembly and the upper cover (14), between the valve pad (7) and the upper cover (14), and between the valve stem (9) and the upper cover (14).

9. The high-pressure water removal filter according to claim 1, characterized in that: The pressure regulating assembly comprises an adjusting nut (12), a spring (11) and a push rod (10); the adjusting nut (12) is threadedly mounted in the valve seat (13); the adjusting nut (12) is provided with an active cavity and a central hole, the central hole is located at the upper part of the active cavity, and the size of the active cavity is larger than the central hole; the upper end of the push rod (10) is passed through the central hole, the lower end of the push rod (10) is enlarged and presses against the upper end of the valve stem (9), and the spring (11) is clamped between the enlarged end of the push rod (10) and the adjusting nut (12); by adjusting the pressure of the spring (11) through the adjusting nut (12), the sealing pressure between the spherical valve core (8) and the valve pad (7) can be changed, so that the opening pressure of the valve assembly is above 15 MPa.

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