Adjustable pressure reducing valve

Abstract

The utility model relates to the technical field of pressure reducing valves, in particular to an adjustable pressure reducing valve which comprises a valve body, an ejector rod is installed in the valve body in a sliding mode, a blocking ball matched with the feeding end of the valve body is assembled on the surface of the outer side end of the ejector rod, and a ring cover connected with the inner wall of the valve body in a screwed mode is installed on the periphery of the ejector rod in a sleeved mode. An oil seal pad is arranged on the inner circumference of the ring cover, and an annular pipe connected with the ejector rod is installed in the valve body in a sliding mode. When the pressure reducing valve is used, due to the fact that the two cavities exist in the valve body and are blocked through the ring cover and the oil seal pad, when a medium extrudes the blocking ball to enter the valve body, the ejector rod can slide in the ring cover and the oil seal pad and drives the annular pipe in the other cavity to extrude the spring at the same time, and pressure reducing and buffering are conveniently conducted on the medium; and the influence of the medium on the spring can be conveniently reduced, so that the spring can operate more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, and particularly relates to an adjustable pressure reducing valve. Background Art

[0002] On pipelines for transporting liquids, especially water supply pipelines in high-rise buildings, in order to control and balance the pressure of the liquid in the pipeline, a pressure reducing valve is usually installed; Patent No. CN202322067126.8 discloses an adjustable pressure reducing valve, which reduces the pressure of the medium and can quickly adjust the elastic force of the spring, increasing the effect of the automatic adjustment range of the pressure reducing valve; However, since the spring is located in the decompression cavity, this causes the spring to directly contact the medium that needs to be decompressed. If the medium has a certain degree of corrosiveness, it is easy to cause a certain impact on the spring. For this reason, we propose an adjustable pressure reducing valve. Summary of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides an adjustable pressure reducing valve.

[0004] The technical solution adopted by the utility model to solve its technical problems is an adjustable pressure reducing valve, which includes a valve body. A push rod is slidably installed in the valve body, and a plug ball that fits with the feed end of the valve body is assembled on the outer surface of the outer end of the push rod. A collar is sleeved and installed on the outer circumference of the push rod and is threadedly connected to the inner wall of the valve body. An oil seal pad is provided on the inner circumference of the collar. A ring pipe connected to the push rod is slidably installed in the valve body, and a disk is slidably installed in the valve body. An annular sleeve that is inserted and connected to the ring pipe is integrally formed on the outer wall surface of the disk, and a spring located inside the annular sleeve is assembled between the disk and the ring pipe.

[0005] A valve cover for plugging is threadedly installed on the outer wall surface of the valve body, and a threaded rod connected to the disk is slidably installed in the valve cover. A rotating seat that is threadedly connected to the threaded rod is rotatably installed on the outer wall surface of the valve cover.

[0006] By adopting the above technical solution, when the pressure reducing valve is in use, since there are two chambers inside the valve body and they are sealed by the collar and the oil seal pad, when the medium squeezes the plug ball into the valve body, the push rod can slide inside the collar and the oil seal pad and drive the ring pipe in the other chamber to squeeze the spring at the same time, which is convenient for buffering the pressure of the medium and reducing the impact of the medium on the spring, so that the spring can operate more stably.

[0007] When it is necessary to adjust the elasticity of the spring, the swivel base rotatably installed on the outer wall of the valve cover can be rotated, and the swivel base can rotate at the original position and be screwed with the threaded rod, so that the threaded rod slides and displaces in the valve cover under the screwing force and drives the disc to move, so that the disc drives the ring sleeve and the ring pipe to fit with each other, adjusts the elastic force of the spring between the two, and controls the pressure acting on the ejector rod, and the adjustment is simple and convenient.

[0008] Specifically, a convex block is integrally formed in the valve cover, and a groove that fits with the convex block is provided on the outer peripheral surface of the threaded rod.

[0009] By adopting the above technical solution, the convex block in the valve body fits with the groove on the outer periphery of the threaded rod, so that the threaded rod slides with the valve body without self-rotation.

[0010] Specifically, a cross bar inserted and connected with the disc is assembled in the valve body, and there are multiple groups of cross bars.

[0011] By adopting the above technical solution, the cross bar in the valve body is inserted into the disc, which is convenient for improving the stability of the disc when sliding and displacing in the valve body.

[0012] Specifically, a shock absorption cylinder located inside the circumference of the spring is assembled between the disc and the ring pipe.

[0013] By adopting the above technical solution, the shock absorption cylinder can be used in cooperation with the spring, so that the spring can operate more stably.

[0014] Specifically, a conical disc is integrally formed on one side end surface of the outer circumference of the plug ball.

[0015] By adopting the above technical solution, the conical surface of the conical disc faces the feed end of the valve body, which is convenient for diverting the medium entering the valve body.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Through the design of the ejector rod, the ring cover, the oil seal gasket, the ring pipe, the disc, the spring and the plug ball in the technical solution of the present application, when the pressure reducing valve is used, since there are two chambers inside the valve body and the two are sealed by the ring cover and the oil seal gasket, when the medium squeezes the plug ball into the valve body, the ejector rod can slide in the ring cover and the oil seal gasket and drive the ring pipe in the other chamber to squeeze the spring at the same time, which is convenient for reducing the pressure and buffering the medium, and is convenient for reducing the influence of the medium on the spring, so that the spring can operate more stably.

[0018] 2. The technical solution of this application, through the design of the collar, valve cover, swivel base and threaded rod, when it is necessary to adjust the elasticity of the spring, the swivel base rotatably installed on the outer wall of the valve cover can be rotated, and the swivel base can rotate in place and be screwed with the threaded rod, so that the threaded rod slides and displaces in the valve cover under the screwing force and drives the disc to move, so that the disc drives the collar to fit with the annular pipe, adjusts the elastic force of the spring between the two, and controls the pressure acting on the ejector rod, and the adjustment is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 Is an isometric view of the present utility model;

[0021] Figure 2 Is a schematic plan view of the inner structure of the valve body of the present utility model;

[0022] Figure 3 Is an exploded view of the connection structure between the swivel base and the valve cover of the present utility model;

[0023] In the figure: 1, valve body; 2, ejector rod; 3, plug ball; 4, collar; 5, oil seal gasket; 6, annular pipe; 7, valve cover; 8, disc; 9, collar; 10, spring; 11, shock absorber cylinder; 12, swivel base; 13, threaded rod; 14, convex block; 15, groove; 16, cross bar; 17, conical disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please refer to Figures 1-3 , an embodiment of the present utility model provides a technical solution: an adjustable pressure reducing valve, including a valve body 1, an ejector rod 2 is slidably installed in the valve body 1, and a plug ball 3 that fits with the feed end of the valve body 1 is assembled on the outer end surface of the ejector rod 2. A collar 4 that is screwed to the inner wall of the valve body 1 is sleeved on the outer circumference of the ejector rod 2, and an oil seal gasket 5 is provided on the inner circumference of the collar 4. An annular pipe 6 connected to the ejector rod 2 is slidably installed in the valve body 1, and a disc 8 is slidably installed in the valve body 1. An annular sleeve 9 that is inserted and connected to the annular pipe 6 is integrally formed on the outer wall surface of the disc 8, and a spring 10 located inside the annular sleeve 9 is assembled between the disc 8 and the annular pipe 6; A valve cover 7 for plugging is screwed on the outer wall surface of the valve body 1, and a threaded rod 13 connected to the disc 8 is slidably installed in the valve cover 7. A swivel base 12 screwed to the threaded rod 13 is rotatably installed on the outer wall surface of the valve cover 7.

[0026] During use, when the pressure reducing valve is in use, since there are two chambers inside the valve body 1 and they are sealed by the ring cover 4 and the oil seal gasket 5, when the medium squeezes the plug ball 3 into the valve body 1, the ejector rod 2 can slide inside the ring cover 4 and the oil seal gasket 5 while driving the ring pipe 6 in the other chamber to squeeze the spring 10, facilitating the pressure reduction and buffering of the medium and reducing the impact of the medium on the spring 10, enabling the spring 10 to operate more stably;

[0027] When it is necessary to adjust the elasticity of the spring 10, the swivel base 12 rotatably installed on the outer wall of the valve cover 7 can be rotated, and the swivel base 12 can rotate in place and be screwed with the threaded rod 13, causing the threaded rod 13 to slide and displace in the valve cover 7 under the screwing force and drive the disc body 8 to move, enabling the disc body 8 to drive the ring sleeve 9 and the ring pipe 6 to fit with each other, adjusting the elastic force of the spring 10 between them, regulating the pressure acting on the ejector rod 2, and being simple and convenient to adjust.

[0028] As Figure 1 and Figure 3 shown, a convex block 14 is integrally formed inside the valve cover 7, and a groove 15 that fits with the convex block 14 is provided on the outer peripheral surface of the threaded rod 13.

[0029] During use, the convex block 14 in the valve body 1 fits with the groove 15 on the outer periphery of the threaded rod 13, enabling the threaded rod 13 to slide relative to the valve body 1 without self-rotation.

[0030] As Figure 2 shown, a cross bar 16 that is inserted and connected to the disc body 8 is assembled inside the valve body 1, and there are multiple groups of the cross bars 16.

[0031] During use, the cross bar 16 in the valve body 1 is inserted into the disc body 8, facilitating the improvement of the stability of the disc body 8 when sliding and displacing in the valve body 1.

[0032] As Figure 2 shown, a shock absorption cylinder 11 located inside the inner circumference of the spring 10 is assembled between the disc body 8 and the ring pipe 6.

[0033] During use, the shock absorption cylinder 11 can cooperate with the spring 10, enabling the spring 10 to operate more stably.

[0034] As Figure 2 shown, a conical disc 17 is integrally formed on one side end surface of the outer periphery of the plug ball 3.

[0035] During use, the conical surface of the conical disc 17 faces the feed end of the valve body 1, facilitating the diversion of the medium entering the valve body 1.

[0036] Working principle and usage process of the utility model: When in use, first install the corresponding structural components in appropriate positions. When using the pressure reducing valve, since there are two chambers inside the valve body 1 and they are blocked by the ring cover 4 and the oil seal gasket 5, when the medium squeezes the plug ball 3 into the valve body 1, the ejector rod 2 can slide inside the ring cover 4 and the oil seal gasket 5 and drive the ring pipe 6 in the other chamber to squeeze the spring 10, which is convenient for reducing the pressure of the medium and buffering it, and is also convenient for reducing the impact of the medium on the spring 10, enabling the spring 10 to operate more stably. At the same time, when it is necessary to adjust the elasticity of the spring 10, the swivel base 12 rotatably installed on the outer wall of the valve cover 7 can be rotated, and the swivel base 12 can rotate in place and be screwed with the threaded rod 13, so that the threaded rod 13 slides and displaces in the valve cover 7 under the screwing force and drives the disc body 8 to move, enabling the disc body 8 to drive the ring sleeve 9 to fit with the ring pipe 6, adjust the elastic force of the spring 10 between the two, and regulate the pressure acting on the ejector rod 2, and the adjustment is simple and convenient.

[0037] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable pressure reducing valve, characterized in that, It includes a valve body (1), a push rod (2) is slidably installed in the valve body (1), and a plug ball (3) that fits with the feed end of the valve body (1) is assembled on the outer end surface of the push rod (2). A collar cover (4) that is screwed to the inner wall of the valve body (1) is sleeved on the outer periphery of the push rod (2), and an oil seal gasket (5) is provided on the inner periphery of the collar cover (4). A ring pipe (6) connected to the push rod (2) is slidably installed in the valve body (1), and a disc body (8) is slidably installed in the valve body (1). An annular sleeve (9) that is inserted and connected to the ring pipe (6) is integrally formed on the outer wall surface of the disc body (8), and a spring (10) located inside the annular sleeve (9) is assembled between the disc body (8) and the ring pipe (6); A valve cover (7) for plugging is screwed and installed on the outer wall surface of the valve body (1), and a threaded rod (13) connected to the disc body (8) is slidably installed in the valve cover (7). A rotating seat (12) that is screwed to the threaded rod (13) is rotatably installed on the outer wall surface of the valve cover (7).

2. An adjustable pressure reducing valve according to claim 1, characterized in that A convex block (14) is integrally formed in the valve cover (7), and a groove (15) that fits with the convex block (14) is provided on the outer peripheral surface of the threaded rod (13).

3. An adjustable pressure reducing valve according to claim 1, characterized in that, A cross bar (16) that is inserted and connected to the disc body (8) is assembled in the valve body (1), and there are multiple groups of the cross bars (16).

4. An adjustable pressure reducing valve according to claim 1, characterized in that, A shock absorber cylinder (11) located inside the spring (10) is assembled between the disc body (8) and the ring pipe (6).

5. An adjustable pressure reducing valve according to claim 1, characterized in that, A conical disc (17) is integrally formed on one side end surface of the outer periphery of the plug ball (3).

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