Adjustable medium pressure regulating valve

Abstract

The utility model discloses an adjustable medium pressure regulating valve which comprises a valve body, a transverse channel is formed in the valve body, a longitudinal channel is formed in the valve body, a cover plate is fastened on the valve body, a rotating shaft is connected to the longitudinal channel in a rotating mode, a swing arm is fixed to the rotating shaft, a covering block is arranged on the swing arm, a valve seat is arranged on the valve body, and an inclined pressing face is arranged on the outer end face of the valve seat. A first hard sealing metal sealing layer is arranged on the inclined pressing face, a second hard sealing metal sealing layer is arranged on the covering block, the rotating shaft penetrates out of the valve body, a push rod is fixed to the end of the rotating shaft, a 90-degree included angle is formed between the push rod and the covering block, a hydraulic cylinder is installed on the valve body, and a cylinder body of the hydraulic cylinder is hinged to the valve body. The top end of a piston rod of the hydraulic cylinder is hinged to the outer end of the push rod; an angle scale is fixed on the valve body, and an indicating pointer matched with the angle scale is fixed on the rotating shaft. The valve can adjust the medium flow and the medium pressure, and is worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a valve for regulating medium flow, and more particularly to an adjustable medium pressure regulating valve. Background Art

[0002] A regulating valve is a valve that regulates the pressure and flow of a medium. Traditional regulating valves include ball valves and gate valves. These types of regulating valves have a fatal problem: the opening changes from small to large. When there are many impurities in the medium, the flow area and the flow port of the opening are easily blocked or stuck, making it impossible to reset the ball core of the ball valve and the gate valve disc. They are used in some special working conditions. Even if they are used, they must be frequently disassembled and maintained, which makes it impossible to achieve the purpose of labor-saving medium regulation and easy medium flow and pressure regulation.

[0003] Chinese utility model patent CN 212775679 Described connecting rod is a kind of connecting rod of the present invention, and its connecting rod has the function of sealing. The ball valve is prone to clogging when used in working conditions with a lot of media impurities, and may even be unable to open and close the pipeline, requiring frequent disassembly and maintenance. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides an adjustable medium pressure regulating valve for regulating the medium pressure at the output end of the transverse channel, thereby meeting the demand for regulating the medium flow and medium pressure.

[0005] The utility model adopts a technical solution to solve its technical problems: this adjustable medium pressure regulating valve comprises a valve body, a transverse channel is opened in the valve body, a longitudinal channel connected to the transverse channel is opened on the valve body, a cover plate covering the longitudinal channel is fastened to the valve body, a rotating shaft is rotatably connected at the longitudinal channel, a swing arm is fixed on the rotating shaft, a covering block is installed on the swing arm, a valve seat is fixed on the valve body by a fastener, the outer end face of the valve seat is provided with an inclined pressure surface inclined in a counterclockwise direction, a first hard sealing metal sealing layer is fixed on the inclined pressure surface, a second hard sealing metal sealing layer matching the first hard sealing metal sealing layer is fixed on the covering block, the rotating shaft passes through the valve body and is fixed with a push rod at the end, the push rod and the covering block are arranged at an angle of 90°, a hydraulic cylinder is installed on the valve body, the cylinder body of the hydraulic cylinder is hinged at the valve body, and the top end of the piston rod of the hydraulic cylinder is hinged at the outer end of the push rod; an angle disk is fixed on the valve body, and an indicating pointer matching the angle disk is fixed on the rotating shaft. Here, the function of the transverse channel, longitudinal channel, rotating shaft, swing arm, cover block, valve seat, inclined pressure surface, first hard sealing metal sealing layer, second hard sealing metal sealing layer, and hydraulic cylinder is to be able to open the cover block at different angles relative to the inclined pressure surface, thereby adjusting the output medium pressure; the function of the angle disk and indicator pointer here is to facilitate the control of the cover block to open at different angles for pressure regulation; the function of the valve inclined pressure surface here is to make the cover block, when closed on the valve seat, at an angle relative to the medium, generate a component force on the medium pressure, thereby reducing the load on the cover block, swing arm, rotating shaft, and hydraulic cylinder; the function of the 90° angle between the push rod and the cover block here is to make the hydraulic cylinder have enough pushing angle to push the push rod to rotate when the cover block is pushed open; the first hard sealing metal sealing layer and the second hard sealing metal sealing layer are made of cobalt-based alloy material or other materials with similar performance, which is not only wear-resistant but also corrosion-resistant, and can greatly increase the service life of the regulating valve.

[0006] Further improvement, hydraulic cylinders are provided on both sides of the rotating shaft. The function of the hydraulic cylinders provided on both sides of the rotating shaft is to make the driving force of the covering block more uniform, and to cover the inclined pressure surface at different angles, thereby adjusting the pressure of the medium, and thus adjusting the outlet medium pressure of the transverse channel.

[0007] For further improvement, a locking member is provided in the valve body, which includes a cylinder body, a cavity of the cylinder body is injected with hydraulic oil, the end of the cylinder body is hinged at the cover plate, a piston is inserted in the cavity of the cylinder body, a telescopic rod extending from the cylinder body is fixed on the piston, the outer end of the telescopic rod is hinged at the center position of the cover block, the top and bottom ends of the cylinder body are connected by a through pipe, a waterproof solenoid valve is installed at the through pipe, and a limiting push rod is fixed at the top and bottom ends of the cavity of the cylinder body. The function of the locking member here is to lock the position of the telescopic rod, thereby locking the position of the cover block together, preventing the cover block from being displaced under strong medium pressure, or the swing arm from being deformed; the working principle of the locking member here is: when the telescopic rod needs to be locked, only the waterproof solenoid valve needs to be closed to prevent the through pipe from flowing and the telescopic rod from moving, thereby locking the position of the cover block.

[0008] For further improvement, a mounting hole is provided on the swing arm, and an insert that fits the gap of the mounting hole is fixed to the center of the outer end of the cover block, and a spherical block that fits the point of the mounting hole is fixed on the insert block. The outer end face of the insert block protrudes 2mm from the outer end face of the swing arm, and a threaded rod with a cross-section smaller than the insert block is fixed to the outer end face of the insert block. A gasket with a cross-section larger than the mounting hole is installed on the threaded rod, and a nut is fastened to the threaded rod. The outer end of the telescopic rod is hinged to the cover threaded rod. The function of the mounting hole, insert block, spherical block, the outer end face of the insert block protruding 2mm from the outer end face of the swing arm, the threaded rod, gasket, and nut is to give the cover block a floating characteristic, so that it can fit more closely on the inclined pressure surface; the function of the outer end face of the insert block protruding 2mm from the outer end face of the swing arm is to provide a floating amount for the cover block, so that the cover block does not move too far and cannot be stably limited to the swing arm.

[0009] Further improvement, the nut and the threaded rod are provided with a through pin hole, and a pin for bending and preventing loosening is installed at the through pin hole. The function of the through pin hole and the pin is to prevent the nut from loosening.

[0010] For further improvement, a lifting lug is fixed at the top center of the cover plate. The function of the lifting lug is to lift the regulating valve as a whole, thereby facilitating the transportation and installation of the regulating valve.

[0011] The beneficial effects of the utility model are:

[0012] 1). Able to adjust the medium flow and medium pressure;

[0013] 2) The cover block can be angle-controlled to adjust flow and pressure at different angles.

[0014] 3). After the closing block determines the angle position, the telescopic rod can be locked to provide strong support and prevent the swing arm from being deformed under strong medium pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 for Figure 2 A perspective attempt;

[0018] Figure 4 This is a structural diagram of the cover assembly area of the utility model;

[0019] Figure 5 for Figure 1 A local enlarged view of area B;

[0020] Figure 6 for Figure 1 A local enlarged view of the C region;

[0021] Figure 7 This is a schematic structural diagram of the locking member in the present utility model;

[0022] Figure 8 This is a flow chart of the working principle of the utility model.

[0023] Explanation of the reference numerals: valve body 1, cover plate 1a, transverse channel 1-1, longitudinal channel 1-2, rotating shaft 2, swing arm 3, mounting hole 3-1, covering block 4, plug block 4-1, threaded rod 4-2, gasket 4-3, nut 4-4, through pin hole 4-5, pin 4-6, spherical block 4-7, second hard-sealed metal sealing layer 4a, valve seat 5, inclined pressure surface 5-1, first hard-sealed metal sealing layer 5-2, push rod 6, hydraulic cylinder 7, angle plate 8, indicator pointer 9, locking member 10, cylinder body 10-1, hydraulic oil 10-2, piston 10-3, telescopic rod 10-4, through pipe 10-5, waterproof solenoid valve 10-6, limit push rod 10-7, lifting ear 11. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Referring to the accompanying drawings: This adjustable medium pressure regulating valve includes a valve body 1, a transverse channel 1-1 is opened in the valve body 1, a longitudinal channel 1-2 connected to the transverse channel 1-1 is opened on the valve body 1, a cover plate 1a covering the longitudinal channel 1-2 is fastened to the valve body 1, a rotating shaft 2 is rotatably connected to the longitudinal channel 1-2, a swing arm 3 is fixed to the rotating shaft 2, a cover block 4 is installed on the swing arm 3, a valve seat 5 is fixed to the valve body 1 by a fastener, and the outer end surface of the valve seat 5 is provided with an inclined pressure surface 5-1 inclined in the counterclockwise direction, and the inclined pressure surface 5- 1 is fixed with a first hard-sealed metal sealing layer 5-2, and a second hard-sealed metal sealing layer 4a that matches the first hard-sealed metal sealing layer 5-2 is fixed on the covering block 4. The rotating shaft 2 passes through the valve body 1 and is fixed with a push rod 6 at the end. The push rod 6 is arranged at a 90° angle to the covering block 4. A hydraulic cylinder 7 is installed on the valve body 1, and the cylinder body of the hydraulic cylinder 7 is hinged to the valve body 1. The top end of the piston rod of the hydraulic cylinder 7 is hinged to the outer end of the push rod 6; an angle disk 8 is fixed on the valve body 1, and an indicating pointer 9 that matches the angle disk 8 is fixed on the rotating shaft 2.

[0026] Hydraulic cylinders 7 are provided on both sides of the rotating shaft 2 .

[0027] A locking member 10 is provided in the valve body 1, and the locking member 10 includes a cylinder 10-1. The cavity of the cylinder 10-1 is filled with hydraulic oil 10-2. The end of the cylinder 10-1 is hinged to the cover plate 1a. A piston 10-3 is inserted into the cavity of the cylinder 10-1. A telescopic rod 10-4 extending from the cylinder 10-1 is fixed on the piston 10-3. The outer end of the telescopic rod 10-4 is hinged at the center position of the cover block 4. A through pipe 10-5 is connected between the top and bottom ends of the cylinder 10-1. A waterproof solenoid valve 10-6 is installed at the through pipe 10-5. A limiting push rod 10-7 is fixed to the top and bottom ends of the cavity of the cylinder 10-1.

[0028] A mounting hole 3-1 is provided on the swing arm 3, and an insert block 4-1 with a clearance fit with the mounting hole 3-1 is fixed to the center of the outer end of the cover block 4, and a spherical block 4-7 with a point fit with the mounting hole 3-1 is fixed to the insert block 4-1. The outer end face of the insert block 4-1 protrudes from the outer end face of the swing arm 3 by 2 mm, and a threaded rod 4-2 with a cross-section smaller than that of the insert block 4-1 is fixed to the outer end face of the insert block 4-1, and a gasket 4-3 with a cross-section larger than that of the mounting hole 3-1 is installed on the threaded rod 4-2. A nut 4-4 is fastened to the threaded rod 4-2, and the outer end of the telescopic rod 10-4 is hinged to the cover threaded rod 4-2.

[0029] A through pin hole 4-5 is formed between the nut 4-4 and the threaded rod 4-2, and a pin 4-6 for bending and preventing loosening is installed at the through pin hole 4-5.

[0030] A lifting lug 11 is fixed at the center of the top end of the cover plate 1a.

[0031] The working principle of the present invention is as follows: when it is necessary to adjust the medium flow and the medium pressure, it is only necessary to start the two hydraulic cylinders 7, thereby driving the push rod 6 to rotate, and using the push rod 6 to drive the rotating shaft 2 to rotate, thereby driving the cover block 4 to rotate and open it at an angle with the valve seat 5. The opening angle is determined by the indicator pointer 9 on the angle disk 8. When the cover block 4 rotates at an angle, the piston 10-3 can move normally. At this time, the waterproof solenoid valve 10-6 is in a fully open state, and the hydraulic oil can flow normally. After the cover block 4 rotates to the specified position, the waterproof solenoid valve 10-6 is closed, thereby blocking the passage of the through pipe 10-5, and the piston 10-3 cannot move, and then the telescopic rod 10-4 is locked, thereby pressing the middle of the cover block 4 to prevent the medium pressure from acting entirely on the cover block 4 and preventing the swing arm 3 from deforming. Since the opening and closing method adopts a large flow area and a large flow port, no blockage will occur in a medium environment with relatively many impurities (such as Figure 8 As shown in the figure), it will not affect the sealing ring area. The regulating valve has a long service life and low maintenance cost, and is worthy of promotion and application.

[0032] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An adjustable medium pressure regulating valve, comprising a valve body (1), wherein a transverse channel (1-1) is formed in the valve body (1), and wherein: The valve body (1) is provided with a longitudinal channel (1-2) communicating with the transverse channel (1-1), the valve body (1) is fastened with a cover plate (1a) covering the longitudinal channel (1-2), the longitudinal channel (1-2) is rotatably connected to a rotating shaft (2), a swing arm (3) is fixed to the rotating shaft (2), a cover block (4) is mounted on the swing arm (3), a valve seat (5) is fixed to the valve body (1) via a fastener, the outer end surface of the valve seat (5) is provided with an inclined pressure surface (5-1) inclined in a counterclockwise direction, and the inclined pressure surface (5 -1) is fixed with a first hard-sealed metal sealing layer (5-2), the covering block (4) is fixed with a second hard-sealed metal sealing layer (4a) matched with the first hard-sealed metal sealing layer (5-2), the rotating shaft (2) passes through the valve body (1) and is fixed with a push rod (6) at the end thereof, the push rod (6) and the covering block (4) are arranged at an angle of 90°, a hydraulic cylinder (7) is installed on the valve body (1), the cylinder body of the hydraulic cylinder (7) is hinged to the valve body (1), and the top end of the piston rod of the hydraulic cylinder (7) is hinged to the outer end of the push rod (6); An angle disc (8) is fixed on the valve body (1), and an indicating pointer (9) matching the angle disc (8) is fixed on the rotating shaft (2).

2. The adjustable medium pressure regulating valve according to claim 1, characterized in that: Hydraulic cylinders (7) are provided on both sides of the rotating shaft (2).

3. The adjustable medium pressure regulating valve according to claim 1, characterized in that: A locking member (10) is provided in the valve body (1), and the locking member (10) includes a cylinder body (10-1), a cavity of the cylinder body (10-1) is injected with hydraulic oil (10-2), an end of the cylinder body (10-1) is hinged at the cover plate (1a), a piston (10-3) is inserted into the cavity of the cylinder body (10-1), a telescopic rod (10-4) extending from the cylinder body (10-1) is fixed on the piston (10-3), the outer end of the telescopic rod (10-4) is hinged at the center position of the cover block (4), a through pipe (10-5) is connected between the top and bottom ends of the cylinder body (10-1), and a waterproof solenoid valve (10-6) is installed on the through pipe (10-5).

4. The adjustable medium pressure regulating valve according to claim 3, characterized in that: The swing arm (3) is provided with a mounting hole (3-1); an insert block (4-1) with a clearance fit with the mounting hole (3-1) is fixed at the center of the outer end of the cover block (4); a spherical block (4-7) with a point fit with the mounting hole (3-1) is fixed on the insert block (4-1); the outer end surface of the insert block (4-1) protrudes 2 mm from the outer end surface of the swing arm (3); a threaded rod (4-2) with a cross-section smaller than that of the insert block (4-1) is fixed on the outer end surface of the insert block (4-1); a washer (4-3) with a cross-section larger than that of the mounting hole (3-1) is installed on the threaded rod (4-2); a nut (4-4) is fastened at the threaded rod (4-2); and the outer end of the telescopic rod (10-4) is hinged at the cover threaded rod (4-2).

5. The adjustable medium pressure regulating valve according to claim 4, characterized in that: The nut (4-4) and the threaded rod (4-2) are provided with a through-pin hole (4-5), and a pin (4-6) for bending and preventing loosening is installed at the through-pin hole (4-5).

6. The adjustable medium pressure regulating valve according to claim 1, characterized in that: A lifting lug (11) is fixed at the top center of the cover plate (1a).

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