Hydraulic control valve W-type diaphragm

Abstract

The utility model relates to water power control valve technical field, and disclose water power control valve W type diaphragm, install between valve body and valve cover, including diaphragm body, diaphragm body edge is provided with the card edge, the outer side of valve body upper end opening is provided with one annular clamping slot, and the surface of valve cover lower extreme is provided with the second annular clamping slot of mutually cooperating with one annular clamping slot. This water power control valve W type diaphragm, when installing diaphragm body, the card edge of diaphragm body is clamped in one annular clamping slot, and then when the valve cover is covered on the upper end opening of valve body and is installed fixed through fixed bolt, the card edge is located between one annular clamping slot and the second annular clamping slot, and the valve body cooperates with the valve cover, can effectively compress the card edge of diaphragm body, compared with traditional bowl type diaphragm, convenient to install, save time and effort, and through setting up annular groove on diaphragm body, the cross section of diaphragm body is W type, so that water power control valve is more sensitive when operating, and the mould cost is lower, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control valve technology, specifically to a W-type diaphragm hydraulic control valve. Background Technology

[0002] A hydraulic control valve is an automatic valve that uses pipeline medium pressure as power to regulate the opening and closing state of the main valve through accessories such as pilot valves and needle valves.

[0003] In hydraulic control valves, the core function of the diaphragm is to create a pressure difference by separating the main valve chamber, and to use the energy of the medium to drive the diaphragm to move, thereby controlling the valve's opening and closing, regulation and protection functions, and realizing automated operation. The diaphragms of existing hydraulic control valves are generally cup-shaped, which are relatively tall and have high mold costs. When installing cup-shaped diaphragms, it is necessary to align the mounting holes on their edges with the mounting holes on the valve body, which is a cumbersome, time-consuming and labor-intensive operation. Therefore, it is necessary to provide W-shaped diaphragms for hydraulic control valves to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a W-type diaphragm hydraulic control valve, which solves the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a W-type diaphragm for hydraulic control valve, installed between the valve body and the valve cover, including a diaphragm body, the edge of the diaphragm body is provided with a retaining edge, the center of the diaphragm body is provided with a central hole, and a plurality of shaft holes are arrayed outside the central hole; A first annular groove is provided on the outer side of the opening at the upper end of the valve body, and a second annular groove is provided on the lower surface of the valve cover to cooperate with the first annular groove.

[0006] Preferably, the diaphragm body has an annular groove, and the cross-section of the diaphragm body is W-shaped.

[0007] Preferably, a valve stem is provided inside the valve body, and the upper end of the valve stem passes through the central hole and extends into the valve cover.

[0008] Preferably, a diaphragm pressure plate is provided at the center of the upper surface of the diaphragm body, and the diaphragm pressure plate is sleeved on the outer surface of the valve stem.

[0009] Preferably, a support frame is provided at the center of the lower end surface of the diaphragm body, and the support frame is sleeved on the outer surface of the valve stem.

[0010] Preferably, both the diaphragm pressure plate and the support frame have mounting grooves on the side near the diaphragm body, and gaskets are provided in the mounting grooves of both the diaphragm pressure plate and the support frame.

[0011] Preferably, both the diaphragm plate and the gasket have through holes corresponding to the shaft hole.

[0012] Preferably, a plurality of guide shafts are arranged in an array in the mounting groove of the support frame, and the upper end of the guide shaft passes through the shaft hole and is threadedly connected to the diaphragm pressure plate with a fastening nut.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This hydraulic control valve features a W-type diaphragm with a retaining edge. When installing the diaphragm body, the retaining edge is secured inside the first annular groove. Then, when the valve cover is placed over the opening at the top of the valve body and fixed with the fixing bolts, the retaining edge is located between the first and second annular grooves. The valve body and valve cover cooperate with each other to effectively press the retaining edge of the diaphragm body. Compared with the traditional bowl-shaped diaphragm, it is easier to install and saves time and effort.

[0014] 2. The W-shaped diaphragm of this hydraulic control valve, by setting an annular groove on the diaphragm body and the cross-section of the diaphragm body being W-shaped, makes the hydraulic control valve more sensitive during operation, reduces mold costs, and extends service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the diaphragm body of this utility model; Figure 2 This is a cross-sectional view of the diaphragm body of this utility model; Figure 3 This is a schematic diagram of the structure of the hydraulic control valve of this utility model; Figure 4 This is a cross-sectional view of the hydraulic control valve of this utility model; Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A; Figure 6 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0016] In the diagram: 1. Valve body; 101. Annular groove No. 1; 2. Valve cover; 201. Annular groove No. 2; 3. Diaphragm body; 301. Edge; 302. Center hole; 303. Shaft hole; 4. Valve stem; 5. Diaphragm pressure plate; 6. Support frame; 601. Guide shaft; 7. Gasket. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 A hydraulic control valve W-type diaphragm is installed between valve body 1 and valve cover 2, including diaphragm body 3, the edge of diaphragm body 3 is provided with a retaining edge 301, the center of diaphragm body 3 is provided with a central hole 302, and a number of shaft holes 303 are arranged in an array outside the central hole 302. A first annular groove 101 is provided on the outer side of the upper opening of the valve body 1. A second annular groove 201 is provided on the lower surface of the valve cover 2, which cooperates with the first annular groove 101. When installing the diaphragm body 3, the retaining edge 301 of the diaphragm body 3 is clamped inside the first annular groove 101. Then, when the valve cover 2 is placed on the upper opening of the valve body 1 and fixed by the fixing bolts, the retaining edge 301 is located between the first annular groove 101 and the second annular groove 201. The valve body 1 and the valve cover 2 cooperate with each other to effectively press the retaining edge 301 of the diaphragm body 3. Compared with the traditional bowl-shaped diaphragm, it is easier to install and saves time and effort.

[0019] The diaphragm body 3 has an annular groove, and the cross-section of the diaphragm body 3 is W-shaped. The valve body 1 has a valve stem 4 inside, and the upper end of the valve stem 4 passes through the central hole 302 and extends into the valve cover 2. By setting an annular groove on the diaphragm body 3 and the cross-section of the diaphragm body 3 is W-shaped, the hydraulic control valve is more sensitive to operation, the mold cost is lower, and the service life is longer.

[0020] The diaphragm body 3 has a diaphragm pressure plate 5 at the center of its upper surface, which is fitted onto the outer surface of the valve stem 4. The diaphragm body 3 has a support frame 6 at the center of its lower surface, which is fitted onto the outer surface of the valve stem 4. The diaphragm pressure plate 5 and the support frame 6 together form the core support structure of the diaphragm body 3. The two work together to ensure that the diaphragm body 3 plays a key role in pressure transmission, sealing and isolation, and operational stability.

[0021] The diaphragm pressure plate 5 and the support frame 6 are both provided with mounting grooves on the side near the diaphragm body 3. Gaskets 7 are provided in the mounting grooves of the diaphragm pressure plate 5 and the support frame 6. The mounting grooves facilitate the installation of gaskets 7. The gaskets 7 can effectively prevent the diaphragm pressure plate 5 and the support frame 6 from squeezing and damaging the diaphragm body 3, while ensuring the sealing between the diaphragm pressure plate 5 and the support frame 6 and the diaphragm body 3.

[0022] The diaphragm plate 5 and the gasket 7 are both provided with through holes corresponding to the shaft hole 303. Several guide shafts 601 are arranged in an array in the mounting groove of the support frame 6. The upper end of the guide shaft 601 passes through the shaft hole 303 and is threadedly connected to the diaphragm plate 5 with a fastening nut. By providing the guide shafts 601, the diaphragm body 3 and the diaphragm plate 5 can be effectively guided and limited when they are installed, making installation and fixing convenient.

[0023] Working principle: When installing the diaphragm body 3, the retaining edge 301 of the diaphragm body 3 is clamped inside the first annular retaining groove 101. Then, when the valve cover 2 is placed on the upper opening of the valve body 1 and fixed by the fixing bolts, the retaining edge 301 is located between the first annular retaining groove 101 and the second annular retaining groove 201. The valve body 1 and the valve cover 2 cooperate with each other to effectively press the retaining edge 301 of the diaphragm body 3. Compared with the traditional bowl-shaped diaphragm, it is easier to install and saves time and effort.

[0024] Furthermore, by setting an annular groove on the diaphragm body 3 and making the cross-section of the diaphragm body 3 W-shaped, the hydraulic control valve is more sensitive to operation, the mold cost is lower, and the service life is longer. By opening a shaft hole 303 on the diaphragm body 3, and opening through holes corresponding to the shaft hole 303 on the diaphragm pressure plate 5 and the gasket 7, it is easy to cooperate with the guide shaft 601, so that it plays a guiding and limiting role when installing the diaphragm body 3 and the diaphragm pressure plate 5, and is convenient for installation and fixing.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic control valve with a W-type diaphragm, installed between the valve body (1) and the valve cover (2), characterized in that, The diaphragm body (3) is provided with a retaining edge (301) at its edge, and a central hole (302) is provided in the center of the diaphragm body (3), and a plurality of shaft holes (303) are arranged in an array outside the central hole (302). The valve body (1) has a first annular groove (101) on the outer side of the upper opening, and the valve cover (2) has a second annular groove (201) on the lower surface that cooperates with the first annular groove (101).

2. The W-type diaphragm of the hydraulic control valve according to claim 1, characterized in that, The diaphragm body (3) has an annular groove, and the cross-section of the diaphragm body (3) is W-shaped.

3. The W-type diaphragm of the hydraulic control valve according to claim 1, characterized in that, The valve body (1) is provided with a valve stem (4), the upper end of which passes through the central hole (302) and extends into the valve cover (2).

4. The W-type diaphragm of the hydraulic control valve according to claim 3, characterized in that, A diaphragm pressure plate (5) is provided at the center of the upper surface of the diaphragm body (3), and the diaphragm pressure plate (5) is sleeved on the outer surface of the valve stem (4).

5. The W-type diaphragm of the hydraulic control valve according to claim 4, characterized in that, A support frame (6) is provided at the center of the lower end surface of the diaphragm body (3), and the support frame (6) is sleeved on the outer surface of the valve stem (4).

6. The W-type diaphragm of the hydraulic control valve according to claim 5, characterized in that, The diaphragm plate (5) and the support frame (6) are both provided with mounting grooves on the side near the diaphragm body (3), and gaskets (7) are provided in the mounting grooves of the diaphragm plate (5) and the support frame (6).

7. The W-type diaphragm of the hydraulic control valve according to claim 6, characterized in that, Both the diaphragm plate (5) and the gasket (7) are provided with through holes corresponding to the shaft hole (303).

8. The W-type diaphragm of the hydraulic control valve according to claim 7, characterized in that, The mounting slot of the support frame (6) is provided with a number of guide shafts (601). The upper end of the guide shaft (601) passes through the shaft hole (303) and is threadedly connected to the diaphragm pressure plate (5) with a fastening nut.

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