An adjustable floating valve seat multifunctional valve

Abstract

The present invention relates to the technical field of pressure reducing valves, and specifically to a multifunctional valve with an adjustable floating valve seat. A multifunctional valve with an adjustable floating valve seat comprises a valve body, a suspended valve seat and an adjusting device. The valve body comprises a valve cover and a valve body. The valve cover is fixedly connected to the valve body. The suspended valve seat is arranged inside the valve body. The adjusting device is arranged inside the valve cover. A safety cap is arranged on the top of the valve cover. An adjusting port is arranged on one side of the valve cover. A sealing plug is arranged inside the adjusting port. The present application provides a suspended valve seat, which has no contact with the valve body, greatly reduces the friction between the valve body and the valve seat, can effectively improve the pressure accuracy and sensitivity of the valve, reduce the wear of the valve seat during use, and improve the service life of the equipment; reinforcement grooves are arranged on the connecting surface of the valve body and the valve cover, which can efficiently fix the diaphragm and make the diaphragm evenly stressed, which can not only improve the reinforcement effect of the diaphragm, but also effectively prevent the diaphragm from falling off during creeping.

Description

Technical Field

[0001] The invention relates to the technical field of control valves, in particular to a multifunctional valve with an adjustable floating valve seat. Background Art

[0002] At present, the commonly used multifunctional hydraulic control valve pilot valve is mostly a structural pilot valve with an O-ring, which has poor sensitivity and cannot achieve a good sealing function. It has the following shortcomings: (1) The O-ring has friction during the movement of the pilot valve core. The friction is opposite to the movement direction when the valve core moves up and down, resulting in pressure deviation, and the valve is not sensitive enough to sense pressure; (2) The valve has poor sealing performance and is prone to internal leakage; (3) The internal diaphragm is prone to rupture, which is prone to external leakage; (4) The product structure is inherently insufficient, and the reliability is poor after long-term use and the service life is short. Summary of the invention

[0003] In order to solve the problems of poor sensitivity, poor sealing function and poor reliability of the above-mentioned pressure reducing valve, the present invention provides an adjustable floating valve seat multifunctional valve.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an adjustable floating valve seat multifunctional valve, including a valve body, a suspended valve seat and an adjusting device, the valve body including a valve cover and a valve body, the valve cover is fixedly connected to the valve body, the suspended valve seat is arranged inside the valve body, the adjusting device is arranged inside the valve cover, a safety cap is provided on the top of the valve cover, an adjusting port is provided on one side of the valve cover, and a sealing plug is provided in the adjusting port.

[0005] As an optimization, a water inlet is provided on one side of the valve body, a water outlet is provided on the other side of the valve body, the water inlet is connected to a water inlet pipe, an opening is provided on the lower side of the water inlet pipe, a valve seat sealing ring is provided at the opening, an installation port is provided at the bottom of the valve body, a plug is provided in the installation port, a valve body sealing ring is provided between the installation port and the plug, and a vertical limit groove is provided on the upper part of the plug.

[0006] As an optimization, the adjustment device includes a diaphragm, a diaphragm pressure plate, a spring, a pressure plate and an adjusting screw. The diaphragm is fixed between the valve cover and the valve body. The diaphragm pressure plate, spring and pressure plate are all arranged inside the valve cover. The diaphragm pressure plate is arranged adjacent to the diaphragm. One end of the spring is in contact with and connected to the diaphragm pressure plate, and the other end of the spring is in contact with and connected to the lower side of the pressure plate. One end of the adjusting screw is in contact with and connected to the upper side of the pressure plate, and the other end of the adjusting screw passes through the top of the valve cover and is arranged in the safety cap. The adjusting screw is threadedly connected to the top of the valve cover.

[0007] As an optimization, a contact groove is formed downwardly in the middle of the pressing piece, the adjusting screw is in contact and connected with the contact groove, and a sealing ring is provided at the connection between the pressing piece and the valve cover.

[0008] As an optimization, the suspended valve seat includes a connecting column, a connecting frame and a movable plug. The lower end of the connecting column is fixedly connected to the top of the connecting frame, the movable plug is fixedly connected to the lower part of the connecting frame, the upper side of the movable plug is arranged opposite to the valve seat sealing ring, and the lower end of the movable plug is arranged in the limiting groove.

[0009] As an optimization, the upper part of the connecting column passes through the diaphragm and the diaphragm pressure plate in sequence, the upper part of the connecting column is fixed in the valve cover by a fixing nut, the water inlet pipe passes through the connecting frame, a gap is left between the water inlet pipe and the connecting frame, the lower part of the connecting frame is an opening, and the two ends of the opening of the connecting frame are respectively fixed to the two sides of the movable plug by valve seat screws.

[0010] As an optimization, a cylindrical groove is formed downward on the upper surface of the movable plug, and a valve seat sealing gasket is arranged inside the cylindrical groove.

[0011] As an optimization, the valve seat sealing gasket is truncated cone-shaped, the diameter of the upper side of the valve seat sealing gasket is smaller than the diameter of the lower side of the valve seat sealing gasket, the diameter of the upper side of the valve seat sealing gasket is equal to the diameter of the cylindrical groove, and the valve seat sealing gasket is made of vulcanized rubber.

[0012] As an optimization, the valve cover and the valve body are fixed by fixing bolts, and the lower ends of the fixing bolts pass through the valve cover, the diaphragm and the valve body in sequence.

[0013] As an optimization, the lower side surface of the valve cover and the upper side surface of the valve body are provided with a plurality of reinforcement grooves with triangular cross-sections, the reinforcement grooves on the lower side surface of the valve cover and the reinforcement grooves on the upper side surface of the valve body are coaxially arranged, and the reinforcement grooves on the lower side surface of the valve cover and the reinforcement grooves on the lower side surface of the valve body are staggered.

[0014] The beneficial effects of this solution are: an adjustable floating valve seat multifunctional valve has the following benefits:

[0015] (1) The suspended valve seat is set up without contact with the valve body, which greatly reduces the friction between the valve body and the valve seat, can effectively improve the pressure accuracy and sensitivity of the valve, reduce the wear of the valve seat during use, and increase the service life of the equipment;

[0016] (2) Reinforcement grooves are provided on the connection surfaces of the valve body and the valve cover, which can effectively fix the diaphragm and make the diaphragm bear force evenly, which can not only improve the reinforcement effect of the diaphragm, but also effectively prevent the diaphragm from falling off during creeping;

[0017] (3) A sealing ring is set at the connection between the pressing plate and the valve cover to ensure the sealing effect of the valve cover and the stability of air pressure. Even if the diaphragm ruptures, no liquid will leak out;

[0018] (4) A valve seat gasket is arranged in the movable plug at the bottom of the suspended valve seat. The valve seat gasket and the valve seat sealing ring are arranged correspondingly. When the valve seat gasket and the valve seat sealing ring are in contact, the sealing effect is good, which can greatly improve the adjustment sensitivity of the valve. In addition, the valve seat gasket is in a truncated cone shape, is not easy to fall off, has a long service life, and can reduce a large amount of equipment maintenance costs;

[0019] (5) An adjusting port is set on the valve cover. When the adjusting port is closed and the water inlet and the water outlet are opened, the device is a pressure reducing valve. When the adjusting port, the water inlet and the water outlet are opened, the pressure difference controller and the pressure relief and back pressure control functions can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a front view schematic diagram of the present invention.

[0021] Attached Figure 2 The present invention is attached Figure 1 Schematic diagram of the CC cross-section structure.

[0022] Attached Figure 3 It is a schematic diagram of the left-side cutaway structure of the present invention.

[0023] Attached Figure 4 The present invention is attached Figure 2 Schematic diagram of the enlarged structure of part A.

[0024] Attached Figure 5 The present invention is attached Figure 2 Schematic diagram of the enlarged structure of part B.

[0025] Among them, 1. valve cover, 2. valve body, 3. safety cap, 4. adjusting port, 5. sealing plug, 6. water inlet, 7. water outlet, 8. water inlet pipe, 9. valve seat sealing ring, 10. plug, 11. valve body sealing ring, 12. limit groove, 13. diaphragm, 14. diaphragm pressure plate, 15. spring, 16. pressure piece, 17. adjusting screw, 18. contact groove, 19. sealing ring, 20. connecting column, 21. connecting frame, 22. movable plug, 23. fixing nut, 24. cylindrical groove, 25. valve seat sealing gasket, 26. fixing bolt, 27. reinforcement groove. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1 , 3 As shown, an adjustable floating valve seat multifunctional valve includes a valve body, a suspended valve seat and an adjusting device, wherein the valve body includes a valve cover 1 and a valve body 2, wherein the valve cover 1 is fixedly connected to the valve body 2, wherein the suspended valve seat is arranged inside the valve body 2, wherein the adjusting device is arranged inside the valve cover 1, wherein a safety cap 3 is arranged on the top of the valve cover 1, wherein an adjusting port 4 is arranged on one side of the valve cover 1, wherein a sealing plug 5 is arranged inside the adjusting port 4. When the adjusting port 4 is closed, the valve is used as a pressure reducing valve, and when the adjusting port 4 is opened, the valve can be used as a pressure differential controller.

[0030] like Figure 2As shown, a water inlet 6 is provided on one side of the valve body 2, a water outlet 7 is provided on the other side of the valve body 2, a water inlet pipe 8 is connected to the inside of the water inlet 6, an opening is provided on the lower side of the water inlet pipe 8, a valve seat sealing ring 9 is provided at the opening, a mounting opening is provided at the bottom of the valve body 2, a plug 10 is provided in the mounting opening, a valve body sealing ring 11 is provided between the mounting opening and the plug 10, and a vertical limiting groove 12 is provided on the upper part of the plug 10.

[0031] like Figure 2 , 3 As shown, the adjustment device includes a diaphragm 13, a diaphragm pressure plate 14, a spring 15, a pressure plate 16 and an adjusting screw 17. The diaphragm 13 is fixed between the valve cover 1 and the valve body 2. The diaphragm pressure plate, spring 15 and pressure plate 16 are all arranged inside the valve cover 1. The diaphragm pressure plate 14 is arranged adjacent to the diaphragm 13. One end of the spring 15 is in contact with and connected to the diaphragm pressure plate 14, and the other end of the spring 15 is in contact with and connected to the lower side of the pressure plate 16. One end of the adjusting screw 17 is in contact with and connected to the upper side of the pressure plate 16. The other end of the adjusting screw 17 passes through the top of the valve cover 1 and is arranged in the safety cap 3. The adjusting screw 17 is threadedly connected to the top of the valve cover 1.

[0032] like Figure 2 As shown, a contact groove 18 is formed downwardly in the middle of the pressing piece 16, and the adjusting screw 17 is in contact with and connected to the contact groove 18. A sealing ring 19 is provided at the connection between the pressing piece 16 and the valve cover 1.

[0033] like Figure 2 and Figure 3 As shown, the suspended valve seat includes a connecting column 20, a connecting frame 21 and a movable plug 22. The lower end of the connecting column 20 is fixedly connected to the top of the connecting frame 21, and the movable plug 22 is fixedly connected to the lower part of the connecting frame 21. The upper side surface of the movable plug 22 is arranged opposite to the valve seat sealing ring 9, and the lower end of the movable plug 22 is arranged in the limiting groove 12.

[0034] like Figure 2 As shown, the upper part of the connecting column 20 passes through the diaphragm 13 and the diaphragm pressure plate 14 in sequence, the upper part of the connecting column 20 is fixed in the valve cover 1 by a fixing nut 23, the water inlet pipe 8 is arranged through the connecting frame 21, and a gap is left between the water inlet pipe 8 and the connecting frame 21. The lower part of the connecting frame 21 is an opening, and the two ends of the opening of the connecting frame 21 are respectively fixed to the two sides of the movable plug 22 by valve seat screws.

[0035] like Figure 2 , 3As shown, a cylindrical groove 24 is formed downwardly on the upper surface of the movable plug 22 , and a valve seat sealing gasket 25 is arranged inside the cylindrical groove 24 .

[0036] The valve seat sealing gasket 25 is truncated cone-shaped, the diameter of the upper side of the valve seat sealing gasket 25 is smaller than the diameter of the lower side of the valve seat sealing gasket 25, the diameter of the upper side of the valve seat sealing gasket 25 is equal to the diameter of the cylindrical groove 24, and the valve seat sealing gasket 25 is made of vulcanized rubber.

[0037] The valve cover 1 is fixed to the valve body 2 by means of fixing bolts 26 , and the lower end of the fixing bolts 26 passes through the valve cover 1 , the diaphragm 13 and the valve body 2 in sequence.

[0038] like Figure 2 and Figure 5 As shown, the lower side surface of the valve cover 1 and the upper side surface of the valve body 2 are both provided with a plurality of reinforcement grooves 27 with triangular cross-sections, the reinforcement grooves 27 on the lower side surface of the valve cover 1 and the reinforcement grooves 27 on the upper side surface of the valve body 2 are both coaxially arranged, and the reinforcement grooves 27 on the lower side surface of the valve cover 1 and the reinforcement grooves 27 on the lower side surface of the valve body 2 are staggered.

[0039] Directions:

[0040] Close the regulating port 4;

[0041] When the device is used, water flows into the valve body 2 from the water inlet 6 of the valve body 2, flows through the water inlet pipe 8, passes through the valve seat sealing ring 9 and enters the valve body, and finally flows out of the valve body 2 from the water outlet 7;

[0042] When this application is used as a pressure reducing valve:

[0043] By adjusting the adjusting screw 17 downward, the pressing piece 16 is pushed, the pressing piece 16 pushes the spring 15 downward, the spring 15 pushes the diaphragm pressing plate 14 downward, the diaphragm pressing plate 14 pushes the diaphragm 13, and the suspended valve seat moves downward as a whole, so that the movable plug 22 is away from the valve seat sealing ring 9, and the pressure at the valve body outlet 7 increases;

[0044] By adjusting the adjusting screw 17 upward, the adjusting screw 17 leaves the pressing plate 16, and the spring 15 pushes the pressing plate 16 upward, and the spring 15 drives the diaphragm pressing plate 14 upward, thereby driving the diaphragm 13 and the suspended valve seat to move upward as a whole. When the movable plug 22 approaches the valve seat sealing ring 9, the pressure at the valve body outlet 7 decreases;

[0045] When the valve seat sealing gasket 25 of the movable plug 22 contacts the valve seat sealing ring 9, the valve is closed and water stops entering the valve body.

[0046] In this embodiment, P1S1+F S =P2S2;

[0047] Where: P1: pressure at the water inlet 6 of the valve body 2;

[0048] P2: is the pressure of the water outlet 7 of the valve body 2;

[0049] S1: the water outlet area of ​​the sealing ring 9;

[0050] S2: effective area of ​​diaphragm;

[0051] F S : Spring preload.

[0052] Embodiment 2:

[0053] Directions:

[0054] The other contents are the same as those in Example 1. The regulating port 2 is opened, and liquid is introduced into the valve cover 1 through the regulating port 2. The liquid flow in the valve body 2 is controlled by controlling the liquid pressure in the valve cover 1 and the spring preload force.

[0055] P1S1+P3S2+F S =P2S2;

[0056] Where: P1: pressure at the water inlet 6 of the valve body 2;

[0057] P2: is the pressure of the water outlet 7 of the valve body 2;

[0058] P3: is the pressure of the regulating port 4 of the valve cover 1;

[0059] S1: the water outlet area of ​​the sealing ring 9;

[0060] S2: effective area of ​​diaphragm;

[0061] F S : Spring preload.

[0062] The above-mentioned specific implementation is only a specific case of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific implementation. Any adjustable floating valve seat multifunctional valve that complies with the claims of the present invention and any appropriate changes or modifications made to it by ordinary technicians in the relevant technical field shall fall within the patent protection scope of the present invention.

Claims

1. An adjustable floating seat multifunctional valve, characterized in that: It comprises a valve body, a suspended valve seat and an adjusting device, wherein the valve body comprises a valve cover and a valve body, the valve cover is fixedly connected to the valve body, the suspended valve seat is arranged inside the valve body, the adjusting device is arranged inside the valve cover, a safety cap is arranged on the top of the valve cover, an adjusting port is arranged on one side of the valve cover, and a sealing plug is arranged inside the adjusting port; A water inlet is provided on one side of the valve body, a water outlet is provided on the other side of the valve body, a water inlet pipe is connected to the water inlet, an opening is provided on the lower side of the water inlet pipe, a valve seat sealing ring is provided at the opening, a mounting opening is provided at the bottom of the valve body, a plug is provided in the mounting opening, a valve body sealing ring is provided between the mounting opening and the plug, and a vertical limiting groove is provided on the upper part of the plug; The adjustment device comprises a diaphragm, a diaphragm pressure plate, a spring, a pressure plate and an adjusting screw. The diaphragm is fixed between the valve cover and the valve body. The diaphragm pressure plate, the spring and the pressure plate are all arranged inside the valve cover. The diaphragm pressure plate is arranged adjacent to the diaphragm. One end of the spring is in contact with the diaphragm pressure plate, and the other end of the spring is in contact with the lower side of the pressure plate. One end of the adjusting screw is in contact with the upper side of the pressure plate. The other end of the adjusting screw passes through the top of the valve cover and is arranged in the safety cap. The adjusting screw is threadedly connected to the top of the valve cover. A contact groove is formed downwardly in the middle of the pressing piece, the adjusting screw is in contact with and connected to the contact groove, and a sealing ring is provided at the connection between the pressing piece and the valve cover; The suspended valve seat comprises a connecting column, a connecting frame and a movable plug, the lower end of the connecting column is fixedly connected to the top of the connecting frame, the movable plug is fixedly connected to the lower part of the connecting frame, the upper side of the movable plug is arranged opposite to the valve seat sealing ring, and the lower end of the movable plug is arranged in the limiting groove; The upper part of the connecting column passes through the diaphragm and the diaphragm pressure plate in sequence, the upper part of the connecting column is fixed in the valve cover by a fixing nut, the water inlet pipe passes through the connecting frame, a gap is left between the water inlet pipe and the connecting frame, the lower part of the connecting frame is an opening, and the two ends of the opening of the connecting frame are respectively fixedly connected to the two sides of the movable plug by valve seat screws; A cylindrical groove is formed downwardly on the upper surface of the movable plug, and a valve seat sealing gasket is arranged inside the cylindrical groove; The valve seat sealing gasket is in a truncated cone shape, the diameter of the upper side of the valve seat sealing gasket is smaller than the diameter of the lower side of the valve seat sealing gasket, and the diameter of the upper side of the valve seat sealing gasket is equal to the diameter of the cylindrical groove.

2. The adjustable floating seat multifunctional valve according to claim 1, characterized in that: The valve cover and the valve body are fixed by fixing bolts, and the lower ends of the fixing bolts pass through the valve cover, the diaphragm and the valve body in sequence.

3. The adjustable floating seat multifunctional valve according to claim 2, characterized in that: The lower side of the valve cover and the upper side of the valve body are both provided with a plurality of reinforcement grooves with triangular cross-sections. The reinforcement grooves on the lower side of the valve cover and the reinforcement grooves on the upper side of the valve body are coaxially arranged, and the reinforcement grooves on the lower side of the valve cover and the reinforcement grooves on the lower side of the valve body are staggered.

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