Pressure reducing valve element of liquid pipeline

Abstract

The utility model discloses a pressure reducing valve core for a liquid pipeline, which is characterized in that the top of a hollow cavity wall is provided with an external thread, a valve block is positioned in the hollow cavity wall, the valve block is connected with a sealing bottom wall through a spring, and the valve block is fixed at the lower part of a valve rod; the bottom end of the valve rod extends out from the opening of the sealing bottom wall, a fixing nut, a valve plate and a valve plate gasket are sequentially arranged at the bottom end of the valve rod from bottom to top, and the top face of the valve plate gasket abuts against the opening of the sealing bottom wall. The bottom face and the top face of the outer edge of the pressure regulating membrane are fixed to the top end of the hollow hole cavity wall and the bottom end of the pressing cover respectively, the top in the pressing cover is in threaded connection with a pressure regulating screw, a pressure regulating spring is arranged at the top end of the valve rod, and the top end of the pressure regulating spring abuts against the bottom face of the pressure regulating screw. According to the utility model, the valve body can be directly mounted and dismounted without split mounting, so that the convenience of mounting, maintaining and replacing is greatly improved; in addition, the tension of the pressure adjusting spring can be adjusted by rotating the pressure adjusting screw so as to achieve the effect of adjusting the reduced pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve core, concretely relates to a liquid pipeline pressure reducing valve core. BACKGROUND

[0002] ‌The liquid pipeline is divided into the main pipeline and branch pipeline, liquid flows into the branch pipeline from the main pipeline, and finally flows out from the outlet tap on the branch pipeline, the pressure in the main pipeline is often higher than the pressure in the branch pipeline, and the water flow generally does not need too much pressure when flowing out from the outlet tap, so a pressure reducing valve needs to be arranged on the branch pipeline under the condition. The structure of the pressure reducing valve currently used is a split type installation mode, the valve core and the valve body need to be assembled first and then connected on the pipeline, if the valve core needs to be replaced due to damage, the valve body also needs to be removed from the pipeline, so the valve core cannot be directly replaced alone, and therefore the installation, maintenance or replacement is relatively complicated. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a liquid pipeline pressure reducing valve core, which can directly replace the valve core and is convenient to install, maintain and replace.

[0004] To achieve the above object, the utility model provides the following technical scheme: a hollow valve core main body, a valve rod, a valve block, a pressure regulating diaphragm, a compression cover, a pressure regulating nut, a pressure regulating spring and a valve plate are arranged; the side surface of the valve core main body is a hollow cavity wall, the bottom surface is a sealing bottom wall, the top of the hollow cavity wall is provided with external threads, the valve block is located in the hollow cavity wall, the bottom surface of the valve block is connected with the sealing bottom wall through a spring, the valve rod passes through the center of the valve block, and the valve block is fixed to the lower part of the valve rod; the bottom end of the valve rod extends out of the opening of the sealing bottom wall, the bottom end of the valve rod is sequentially provided with a fixed nut, a valve plate and a valve plate gasket from bottom to top, and the top surface of the valve plate gasket abuts against the opening of the sealing bottom wall; the valve rod passes through the center of the pressure regulating diaphragm, the pressure regulating diaphragm is fixed to the upper part of the valve rod through two upper and lower fixed sheets, the bottom surface and the top surface of the outer edge of the pressure regulating diaphragm are fixed to the top end of the hollow cavity wall and the bottom end of the compression cover respectively, the top of the compression cover in the interior is threadedly connected with a pressure regulating screw, the top end of the valve rod is provided with a pressure regulating spring, and the top end of the pressure regulating spring abuts against the bottom surface of the pressure regulating screw.

[0005] Further, the bottom surface of the sealing bottom wall is provided with a bottom wall gasket.

[0006] Further, the top of the compression cover is provided with a dust cover to prevent dust or foreign matters from entering the compression cover and causing adverse effects on the rotation of the pressure regulating screw.

[0007] Further, the valve block is provided with a sliding block gasket on the circumferential outer side.

[0008] Further, the spring has a plurality of springs and is arranged uniformly around the valve rod to ensure that the valve block is uniformly stressed.

[0009] Compared with the prior art, the utility model discloses can install and detach directly with the valve body, and do not need to install again piece by piece, greatly improve the convenience of installation maintenance replacement, in addition, the tension of pressure regulating spring can be adjusted through the rotation pressure regulating screw to realize the function of adjusting the size of pressure reduction. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is whole structure schematic diagram of the utility model;

[0011] Figure 2 It is whole structure schematic diagram of the utility model;

[0012] In the drawing: 0, valve body, 01, water passing plate, 02, water passing mouth, 1, valve rod, 2, valve block, 3, valve core main body, 31, the cavity wall of the openwork, 32, the sealing bottom wall, 4, pressure regulating diaphragm, 5, compression cover, 6, pressure regulating screw, 7, pressure regulating spring, 8, spring, 9, valve plate gasket, 10, valve plate, 11, fixed nut, 12, fixed sheet, 13, dust cover, 14, sliding block gasket, 15, external thread, 16, bottom wall gasket. DETAILED DESCRIPTION

[0013] The utility model will be further described below in combination with the drawings.

[0014] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0015] As Figure 1 Indicated, the utility model provides a kind of technical scheme: including hollow valve core main body 3, valve rod 1, valve block 2, pressure regulating diaphragm 4, compression cover 5, pressure regulating nut 6, pressure regulating spring 7 and valve plate 10.

[0016] The side of valve core main body 3 is the cavity wall 31 of openwork for water flow, bottom is sealing bottom wall 32, the top of cavity wall 31 of openwork is equipped with external thread 15 for connecting valve body 0, valve block 2 is located in cavity wall 31 of openwork, the bottom surface of valve block 2 is connected between sealing bottom wall 32 by spring 8, valve rod 1 passes through the center of valve block 2, valve block 2 is fixed in lower part of valve rod 1, and valve block 2 circumferential outside is equipped with sliding block gasket 14.

[0017] The bottom end of the valve stem 1 extends out from the opening of the sealing bottom wall 32. From bottom to top, the bottom end of the valve stem 1 is provided with a fixing nut 11, a valve plate 10 and a valve plate gasket 9. The top surface of the valve plate gasket 9 abuts against the opening of the sealing bottom wall 32. In the absence of external force, the spring 8 pushes the valve block 2 upward. Since the valve stem 1 is fixedly connected to the valve block 2, the valve plate gasket 9 is always in close contact with the opening of the sealing bottom wall 32.

[0018] The valve stem 1 passes through the center of the pressure regulating diaphragm 4. The pressure regulating diaphragm 4 is fixed to the upper part of the valve stem 1 by two fixing plates 12. The bottom and top surfaces of the outer edge of the pressure regulating diaphragm 4 are fixed to the top of the hollow cavity wall 31 and the bottom of the pressure cover 5, respectively. The top of the pressure cover 5 is threaded with a pressure regulating screw 6. The top of the valve stem 1 is provided with a pressure regulating spring 7. The top of the pressure regulating spring 7 abuts against the bottom surface of the pressure regulating screw 6.

[0019] like Figure 2 As shown, in use, this utility model can be directly connected to the valve body 0 on the market. It can be connected by the external thread 15 on the top of the hollow cavity wall 31 and the internal thread on the top of the valve body 0. After the connection is completed, the bottom surface of the sealing bottom wall 32 is tightly fitted with the water passage plate 01 inside the valve body 0. In order to ensure the sealing performance, a bottom wall gasket 16 is provided on the bottom surface of the sealing bottom wall 32. The diameters of the fixing nut 11 at the bottom of the valve stem 1, the valve plate 10 and the valve plate gasket 9 are all smaller than the diameter of the water passage 02 at the center of the water passage plate 01. In this way, this utility model can be directly installed and disassembled with the valve body 0 without the need for separate installation. After being connected to the valve body 0, this utility model is installed on the branch pipe. Water flows into the valve body 0 through the inlet and then into the valve core body 3 through the perforated cavity wall 31. Due to the high water pressure in the main pipeline and the sealing of the upper part of the valve core body 3 by the pressure regulating diaphragm 4, the water pressure will press down on the valve plate gasket 9 and eventually overcome the tension of the spring 8 and the deformation force of the pressure regulating diaphragm 4, causing the valve plate gasket 9 to separate from the opening of the sealing bottom wall 32. At this time, the depressurized water flows from the water outlet 02 of the valve body 0 to the water outlet of the valve body 0, thus completing the purpose of depressurizing the high-pressure water flow from the main pipeline to the branch pipeline. If the pressure of the depressurized water is still greater than expected, the pressure regulating screw 6 can be rotated to move it upward, thereby increasing the deformation of the pressure regulating spring 7 and thus increasing the tension of the pressure regulating spring 7.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A pressure reducing valve core for liquid pipelines, characterized in that, It includes a hollow valve core body (3), valve stem (1), valve block (2), pressure regulating diaphragm (4), pressure cap (5), pressure regulating nut (6), pressure regulating spring (7) and valve plate (10); The side of the valve core body (3) is a perforated cavity wall (31), and the bottom surface is a sealed bottom wall (32). The top of the perforated cavity wall (31) is provided with an external thread (15). The valve block (2) is located inside the perforated cavity wall (31). The bottom surface of the valve block (2) is connected to the sealed bottom wall (32) by a spring (8). The valve stem (1) passes through the center of the valve block (2), and the valve block (2) is fixed to the lower part of the valve stem (1). The bottom end of the valve stem (1) extends out from the opening of the sealing bottom wall (32). The bottom end of the valve stem (1) is provided with a fixing nut (11), a valve plate (10) and a valve plate gasket (9) from bottom to top. The top surface of the valve plate gasket (9) abuts against the opening of the sealing bottom wall (32). The valve stem (1) passes through the center of the pressure regulating diaphragm (4). The pressure regulating diaphragm (4) is fixed to the upper part of the valve stem (1) by two fixing plates (12). The bottom and top surfaces of the outer edge of the pressure regulating diaphragm (4) are fixed to the top of the hollow cavity wall (31) and the bottom of the pressure cover (5), respectively. The top of the pressure cover (5) is connected to the pressure regulating screw (6) by a thread. The top of the valve stem (1) is provided with a pressure regulating spring (7). The top of the pressure regulating spring (7) abuts against the bottom surface of the pressure regulating screw (6).

2. The pressure reducing valve core for a liquid pipeline according to claim 1, characterized in that: The bottom surface of the sealed bottom wall (32) is provided with a bottom wall gasket (16).

3. A pressure reducing valve core for liquid pipelines according to claim 1, characterized in that: The top of the clamping cover (5) is provided with a dust cover (13).

4. A pressure-reducing valve core for liquid pipelines according to claim 1, characterized in that: The valve block (2) is provided with a slider washer (14) on its outer circumference.

5. A pressure reducing valve core for liquid pipelines according to claim 1, characterized in that: The springs (8) are multiple and are evenly arranged around the valve stem (1).

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