Self-contained recirculation control valve

Abstract

The present invention discloses a self-supporting recirculation control valve, comprising a main valve body, the main valve body comprising a water inlet end, a water outlet end, a circulation end and an installation port, the circulation end is arranged corresponding to the position of the installation port, a support block is fixedly connected to the inner wall of the circulation end, a guide rod is slidably inserted on the support block, and the bottom thread of the guide rod is sleeved with a limit block; a cavity is arranged in the guide rod, and two pairs of symmetrically arranged through ports are arranged on the inner wall of the cavity, a valve plate is fixedly connected to the top of the guide rod, a threaded sleeve is fixedly connected to the top of the valve plate, a screw is threadedly connected to the inner thread of the threaded sleeve, one end of the screw passes through the inner top of the threaded sleeve and extends upward, and a knob is fixedly connected to one end of the extended screw. The present invention improves the sealing performance of the valve body by arranging a lifting valve plate and a guide rod, and the disassembly and maintenance of the valve body are relatively convenient, thereby improving the use effect of the control valve.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a self-supporting recirculation control valve. Background Art

[0002] Valves are pipe accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, and regulating valves. Valves are control components in fluid conveying systems, and have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems, from the simplest shut-off valves to various valves used in extremely complex automatic control systems, have a wide variety of varieties and specifications. Among them, the structure of metal-sealed butterfly valves is more representative of the three-eccentric structure, which is generally composed of a valve body, a valve seat, a butterfly plate, a valve stem, and a transmission mechanism. It has the advantages of large sealing pressure ratio, easy and flexible opening, etc. On the outlet pipeline of a centrifugal pump, a recirculation valve with the functions of a check valve and a bypass valve is generally installed to prevent the medium from backflowing and damaging the pump and the outlet flow rate from being lower than the minimum flow rate of the pump, resulting in overheating and noise.

[0003] However, the existing circulation control valve has a relatively simple internal structure, and the lifting and lowering of the valve plate in the circulation control valve is relatively simple, resulting in poor sealing performance of the valve plate. At the same time, the disassembly and maintenance of the valve body is relatively troublesome, thus affecting the use effect of the circulation control valve. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] The purpose of the present invention is to solve the problem that the lifting and lowering of the valve plate in the circulation control valve in the prior art is relatively simple, resulting in poor sealing performance of the valve plate, and to propose a self-supporting recirculation control valve.

[0006] 2. Technical solution

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A self-supporting recirculation control valve comprises a main valve body, the main valve body comprises a water inlet end, a water outlet end, a circulation end and an installation port, the circulation end is arranged corresponding to the position of the installation port, a support block is fixedly connected to the inner wall of the circulation end, a guide rod is slidably inserted on the support block, and the bottom of the guide rod is threadedly sleeved with a limit block;

[0009] A cavity is provided in the guide rod, and two pairs of through openings are symmetrically arranged on the inner wall of the cavity. The top of the guide rod is fixedly connected to a valve plate, and the top of the valve plate is fixedly connected to a threaded sleeve, and a screw is connected to the inner thread of the threaded sleeve, one end of the screw passes through the inner top of the threaded sleeve and extends upward, and one end of the extended screw is fixedly connected to a knob, and the end of the screw close to the knob is rotatably sleeved with a mounting plate, and one end of the knob is slidably inserted with a clamping rod, and a plurality of clamping grooves corresponding to the clamping rod are arranged around the top of the mounting plate, and the end of the clamping rod close to the mounting plate is fixedly sleeved with a clamping sleeve, and the end of the clamping rod away from the clamping sleeve is fixedly connected with a pull rod;

[0010] A sleeve is fixedly connected to the bottom of the mounting plate, and the sleeve is threadedly connected to the inner wall of the mounting port. A plurality of sliders are fixedly connected to the outer wall of the threaded sleeve. A sliding groove corresponding to the slider is provided on the inner wall of the sleeve. A sliding rod is fixedly connected in the sliding groove, and a sliding port corresponding to the sliding rod is provided on the slider.

[0011] Preferably, two symmetrically arranged baffles are provided in the water inlet end and the water outlet end, and the baffles are rotatably connected to the inner wall of the main valve body via a rotating shaft.

[0012] Preferably, the support block is provided with a through hole corresponding to the guide rod, a plurality of steel balls are slidably connected in the through hole, and the edges of the steel balls are in contact with the guide rod.

[0013] Preferably, one end of the screw rod located in the threaded sleeve is fixedly connected with a clamping block.

[0014] Preferably, a first spring is sleeved on the slide rod, and two ends of the first spring are fixedly connected to the slide block and the inner wall of the slide groove respectively.

[0015] Preferably, a second spring is sleeved on the clamping rod, and two ends of the second spring are fixedly connected to the clamping sleeve and the knob respectively.

[0016] Preferably, a first sealing ring is fixedly sleeved on the outside of the sheath, and the first sealing ring is fixedly connected to the bottom of the mounting plate.

[0017] Preferably, connecting flanges are fixedly sleeved on the outer walls of the main valve body close to the water inlet end, the water outlet end and the circulation end.

[0018] Preferably, a second sealing ring is rotatably sleeved on the screw rod, and one side of the second sealing ring is fixedly connected to the bottom of the mounting plate.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) In the present invention, the screw is rotated by turning the knob, and the valve plate is driven to rise through the threaded sleeve. At this time, the bottom opening of the cavity is just located in the through-port. At this time, water flows through the water inlet end to the water outlet end. When the threaded sleeve is lowered by turning the knob, the valve plate blocks the water outlet end. At this time, the two groups of openings are respectively located above and below the support block. Water flows through the openings and the cavity and enters the circulation end. At the same time, the knob can be fixed by the clamping rod. The present invention improves the sealing performance of the valve body by setting the lifting valve plate and the guide rod. At the same time, the disassembly and maintenance of the valve body are relatively convenient, thereby improving the use effect of the control valve.

[0022] (2) When the valve body needs to be disassembled, first unscrew the limit block from the guide rod, then rotate the mounting plate and lift the sleeve from the mounting port, thereby pulling the valve plate and guide rod out of the mounting port for maintenance.

[0023] (3) At the same time, the block can effectively prevent the screw from falling off from the threaded sleeve, the steel ball can reduce the friction between the guide rod and the inner wall of the through-hole, and the baffle can effectively prevent water from flowing back. At the same time, the setting of the connecting flange can facilitate the fixing of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the self-supporting recirculation control valve proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom view of the structure of the mounting plate of the self-supporting recirculation control valve proposed by the present invention;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure at A;

[0027] Figure 4 for Figure 1 Schematic diagram of the structure at point B.

[0028] In the figure: 1 main valve body, 101 water inlet end, 102 water outlet end, 103 circulation end, 104 installation port, 2 support block, 3 guide rod, 4 limit block, 5 cavity, 6 through port, 7 valve plate, 8 threaded sleeve, 9 screw, 10 knob, 11 clamping rod, 12 installation plate, 13 clamping sleeve, 14 pull rod, 15 sheath, 16 slider, 17 slide rod, 18 baffle, 19 rotating shaft, 20 through port, 21 steel ball, 22 clamping block, 23 first spring, 24 second spring, 25 first sealing ring, 26 connecting flange, 27 second sealing ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1:

[0031] Reference Figure 1-4 A self-supporting recirculation control valve comprises a main valve body 1, the main valve body 1 comprises a water inlet end 101, a water outlet end 102, a circulation end 103 and an installation port 104, the circulation end 103 and the installation port 104 are arranged correspondingly, a support block 2 is fixedly connected to the inner wall of the circulation end 103 for supporting a guide rod 3, a guide rod 3 is slidably inserted on the support block 2, and a limit block 4 is threadedly sleeved on the bottom of the guide rod 3 to prevent the guide rod 3 from falling off the support block 2;

[0032] The present invention provides a cavity 5 in the guide rod 3 for water circulation, and two pairs of through-holes 6 symmetrically arranged are provided on the inner wall of the cavity 5 for water circulation. A valve plate 7 is fixedly connected to the top of the guide rod 3 for water flow rate, and a threaded sleeve 8 is fixedly connected to the top of the valve plate 7 for supporting a screw rod 9. The threaded sleeve 8 is internally threaded with a screw rod 9 for driving the threaded sleeve 8 to move up and down. One end of the screw rod 9 passes through the inner top of the threaded sleeve 8 and extends upward, and one end of the extended screw rod 9 is fixedly connected with a knob 10 for driving the screw rod 9 to rotate. The end of the screw rod 9 close to the knob 10 is rotatably sleeved with a mounting plate 12 for supporting the screw 9. One end of the knob 10 is slidably inserted with a clamping rod 11 for fixing the knob 10. A plurality of clamping grooves corresponding to the clamping rod 11 are arranged around the top of the mounting plate 12. The end of the clamping rod 11 close to the mounting plate 12 is fixedly sleeved with a clamping sleeve 13 to prevent the clamping rod 11 from falling off, and the end of the clamping rod 11 away from the clamping sleeve 13 is fixedly connected with a pull rod 14.

[0033] In the present invention, a sleeve 15 is fixedly connected to the bottom of the mounting plate 12 for fixing the mounting plate 12. The sleeve 15 is threadedly connected to the inner wall of the mounting port 104 for easy disassembly of the valve body. A plurality of sliders 16 are fixedly connected to the outer wall of the threaded sleeve 8 for supporting the threaded sleeve 8. A sliding groove corresponding to the slider 16 is provided on the inner wall of the sleeve 15. A sliding rod 17 is fixedly connected in the sliding groove for supporting the slider 16. The slider 16 is provided with a sliding opening corresponding to the sliding rod 17.

[0034] In the present invention, two symmetrically arranged baffles 18 are provided in the water inlet end 101 and the water outlet end 102. The baffles 18 are rotatably connected to the inner wall of the main valve body 1 through a rotating shaft 19 to prevent water backflow. A through hole 20 corresponding to the guide rod 3 is provided on the support block 2. A plurality of steel balls 21 are slidably connected in the through hole 20. The edges of the steel balls 21 are in contact with the guide rod 3 to reduce the friction between the guide rod 3 and the inner wall of the through hole 20. A clamping block 22 is fixedly connected to one end of the screw 9 located in the threaded sleeve 8 to prevent the screw from falling off from the threaded sleeve 8.

[0035] In the present invention, a first spring 23 is sleeved on the slide rod 17, and the two ends of the first spring 23 are respectively fixedly connected to the slider 16 and the inner wall of the slide groove, which is used to provide a certain elastic support for the slider 16. A second spring 24 is sleeved on the clamping rod 11, and the two ends of the second spring 24 are respectively fixedly connected to the clamping sleeve 13 and the knob 10, which is used to provide a certain elastic support for the clamping rod 11. A first sealing ring 25 is fixedly sleeved on the outside of the sheath 15, and the first sealing ring 25 is fixedly connected to the bottom of the mounting plate 12 to prevent water leakage. A connecting flange 26 is fixedly sleeved on the outer wall of the main valve body 1 near the water inlet end 101, the water outlet end 102 and the circulation end 1103, which is convenient for fixing the main valve body 1. A second sealing ring 27 is rotatably sleeved on the screw 9, and one side of the second sealing ring 27 is fixedly connected to the bottom of the mounting plate 12 to prevent water leakage.

[0036] In the present invention, the knob 10 is rotated with the screw 9 to rotate, and the valve plate 7 is driven to rise through the threaded sleeve 8. At this time, the bottom opening 6 of the cavity 5 is just located in the through-hole 20. At this time, the water flows through the water inlet end 101 to reach the water outlet end 102. When the knob 10 is rotated to drive the threaded sleeve 8 to descend, the valve plate 7 blocks the water outlet end 102. At this time, the two groups of openings 6 are respectively located above and below the support block 2. The water flows through the opening 6 and the cavity 5 and enters the circulation end 103. At the same time, the knob 10 can be fixed by the clamping rod 11. When the valve body needs to be disassembled, first unscrew the limit block 4 from the guide rod 3, then rotate the mounting plate 12, lift the sheath 15 from the mounting port 104, and then pull the valve plate 7 and the guide rod 3 out of the mounting port 104 for maintenance. At the same time, the block 22 can effectively prevent the screw 9 from falling off from the threaded sleeve 8, the steel ball 21 can reduce the friction between the guide rod 3 and the inner wall of the through-port 20, and the baffle 18 can effectively prevent water from flowing back. At the same time, the setting of the connecting flange 26 can facilitate the fixing of the main valve body 1.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-supporting recirculation control valve, comprising a main valve body (1), characterized in that: The main valve body (1) comprises a water inlet end (101), a water outlet end (102), a circulation end (103) and an installation port (104); the circulation end (103) and the installation port (104) are arranged correspondingly; a support block (2) is fixedly connected to the inner wall of the circulation end (103); a guide rod (3) is slidably inserted on the support block (2); and a limit block (4) is threadedly sleeved on the bottom of the guide rod (3); A cavity (5) is provided in the guide rod (3), and two pairs of symmetrically arranged through-holes (6) are provided on the inner wall of the cavity (5); a valve plate (7) is fixedly connected to the top of the guide rod (3), a threaded sleeve (8) is fixedly connected to the top of the valve plate (7), a screw rod (9) is internally threadedly connected to the threaded sleeve (8), one end of the screw rod (9) passes through the inner top of the threaded sleeve (8) and extends upward, and the extended end of the screw rod (9) is fixedly connected to a knob (10), and the end of the screw rod (9) close to the knob (10) is rotatably sleeved with a mounting plate (12), and one end of the knob (10) is slidably inserted with a clamping rod (11), and a plurality of clamping grooves corresponding to the clamping rod (11) are arranged around the top of the mounting plate (12), and the end of the clamping rod (11) close to the mounting plate (12) is fixedly sleeved with a clamping sleeve (13), and the end of the clamping rod (11) away from the clamping sleeve (13) is fixedly connected with a pull rod (14); A sleeve (15) is fixedly connected to the bottom of the mounting plate (12), and the sleeve (15) is threadedly connected to the inner wall of the mounting opening (104). A plurality of sliders (16) are fixedly connected to the outer wall of the threaded sleeve (8), and a slide groove corresponding to the slider (16) is provided on the inner wall of the sleeve (15). A slide rod (17) is fixedly connected in the slide groove, and a slide opening corresponding to the slide rod (17) is provided on the slider (16).

2. The self-supporting recirculation control valve according to claim 1, characterized in that: Two symmetrically arranged baffles (18) are provided in the water inlet end (101) and the water outlet end (102), and the baffles (18) are rotatably connected to the inner wall of the main valve body (1) via a rotating shaft (19).

3. The self-supporting recirculation control valve according to claim 1, characterized in that: The support block (2) is provided with a through hole (20) corresponding to the guide rod (3), a plurality of steel balls (21) are slidably connected in the through hole (20), and the edges of the steel balls (21) are in contact with the guide rod (3).

4. The self-supporting recirculation control valve according to claim 1, characterized in that: One end of the screw rod (9) located inside the threaded sleeve (8) is fixedly connected to a clamping block (22).

5. The self-supporting recirculation control valve according to claim 1, characterized in that: The slide bar (17) is sleeved with a first spring (23), and two ends of the first spring (23) are respectively fixedly connected to the slide block (16) and the inner wall of the slide groove.

6. The self-supporting recirculation control valve according to claim 1, characterized in that: The clamping rod (11) is sleeved with a second spring (24), and two ends of the second spring (24) are respectively fixedly connected to the clamping sleeve (13) and the knob (10).

7. The self-supporting recirculation control valve according to claim 1, characterized in that: A first sealing ring (25) is fixedly sleeved on the outside of the protective sleeve (15), and the first sealing ring (25) is fixedly connected to the bottom of the mounting plate (12).

8. The self-supporting recirculation control valve according to claim 1, characterized in that: The outer walls of the main valve body (1) close to the water inlet end (101), the water outlet end (102) and the circulation end (1103) are all fixedly sleeved with connecting flanges (26).

9. The self-supporting recirculation control valve according to claim 1, characterized in that: A second sealing ring (27) is rotatably sleeved on the screw rod (9), and one side of the second sealing ring (27) is fixedly connected to the bottom of the mounting plate (12).

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