Wear-resistant high-strength valve rod

Abstract

The utility model provides a wear-resisting high-strength valve rod, which belongs to the technical field of valves and comprises a water pipe and a valve rod assembly, the valve rod assembly is arranged on the water pipe, the inner wall of the water pipe is fixedly connected with a water inlet end baffle and a water outlet end baffle, and the water inlet end baffle and the water outlet end baffle are respectively arranged on two sides of the valve rod assembly. A connecting plate is arranged between the water inlet end baffle and the water outlet end baffle, one end of the connecting plate is fixedly connected to the lower surface of the water inlet end baffle, the end, away from the water inlet end baffle, of the connecting plate is fixedly connected to the side face of the water outlet end baffle, and a communication opening is formed in the connecting plate. According to the utility model, the original rotary valve rod is changed into the fixed valve rod, and the thickened valve rod shell can be used for providing a higher-strength protection effect, so that not only can the connection strength between the valve rod and the water pipe be enhanced, but also the abrasion caused in the rotating process is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a wear-resistant high-strength valve stem. Background Art

[0002] The valve stem is an important part of the valve. It is usually a long strip of metal material that connects the valve cover and valve core. It plays a role in transmitting force and controlling the valve action during the opening and closing process of the valve. The main functions of the valve stem include: transmitting force, supporting the valve core, guiding the movement of the valve core and transmitting position information.

[0003] Existing valves with high-strength and high-wear-resistant valve stems are disclosed in publication number CN211202918U, including a valve body, a connecting pipe is provided on the top of the valve body, a valve cover is connected to the top flange of the connecting pipe, a second internal threaded area and a third internal threaded area are provided inside the valve cover, a valve stem is movably connected inside the valve cover, a valve core is provided on the outer side of the bottom of the valve stem, an inlet pipe is provided on the circumferential outer wall of the valve body and at a middle position, and the end of the inlet pipe located in the valve body is tilted downward, and an outlet pipe is provided at the bottom of the valve body.

[0004] The existing wear-resistant high-strength valve stem still has the following shortcomings:

[0005] 1. The method adopted in the existing setting reduces the area and length of the threaded connection, thereby reducing the friction on the valve stem surface, but it will reduce the connection strength between the valve stem and the valve, which will cause the valve stem to fall off.

[0006] 2. The existing setting adopts a design of changing the direction of the valve core and the water inlet, thereby reducing the impact strength of the water flow on the valve stem, thereby better protecting the valve stem. However, the curved water inlet will have a greater impact on the valve, and the change in the shape of the valve core will also increase the resistance of the valve stem when driving the valve core. Utility Model Content

[0007] The purpose of the utility model is to solve the problem in the prior art that reducing the length and area of ​​the threaded connection will lead to a weakening of the connection strength between the valve stem and the valve, changing the water inlet direction and the valve core shape will increase the negative pressure of the valve and also bring more resistance to the valve stem, and to propose a wear-resistant and high-strength valve stem.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A wear-resistant high-strength valve stem, comprising: a water pipe and a valve stem assembly, wherein the valve stem assembly is arranged on the water pipe, the inner wall of the water pipe is fixedly connected with an inlet end baffle and a water outlet end baffle, the inlet end baffle and the water outlet end baffle are respectively arranged on both sides of the valve stem assembly, a connecting plate is arranged between the inlet end baffle and the water outlet end baffle, one end of the connecting plate is fixedly connected to the lower surface of the inlet end baffle, one end of the connecting plate away from the inlet end baffle is fixedly connected to the side of the water outlet end baffle, and a connecting port is arranged on the connecting plate;

[0010] Preferably, the valve stem assembly comprises a valve stem housing, a piston, an arc-shaped rubber pad, a pull rod, a cushion block and a handle, the valve stem housing is fixedly connected to the water pipe, the pull rod is slidably connected to the upper surface of the valve stem housing, the piston and the arc-shaped rubber pad are arranged in the valve stem housing, the piston is fixedly connected to the lower surface of the pull rod, the arc-shaped rubber pad is fixedly connected to the side of the piston, the handle is fixedly connected to the upper end of the pull rod, the cushion block is fixedly connected to the pull rod, and the cushion block is arranged below the handle;

[0011] Preferably, the upper surface of the valve stem housing is provided with a plurality of air inlet holes, and the plurality of air inlet holes are arranged in a circular array around the pull rod;

[0012] Preferably, the inner concave surface of the arc-shaped rubber pad is arranged on the lower surface, and the width of the arc-shaped rubber pad is 2 cm greater than the distance between the piston and the inner side wall of the valve stem housing;

[0013] Preferably, the lower surface of the valve stem housing is fixedly connected to an elastic airbag, the lower end of the elastic airbag is configured to be hemispherical, and the elastic airbag is configured to be directly above the communication port;

[0014] Preferably, the area of ​​the water inlet baffle is set to 3 / 4 of the water pipe cross section, and the area of ​​the water outlet baffle is set to 1 / 2 of the water pipe cross section.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model converts the original rotating valve stem into a fixed valve stem, and can use the thickened valve stem shell to provide a higher strength protection effect, which can not only enhance the connection strength between the valve stem and the water pipe, but also reduce the wear caused during the rotation process.

[0017] 2. The utility model can reduce the impact force of water flow during water delivery through the water pipe by arranging the water inlet end baffle and the water outlet end baffle on both sides of the valve stem, thereby enhancing the protection of the valve stem. When the elastic airbag is inflated, the elastic airbag will also seal the connecting port in time, and because the elastic airbag has better elasticity, it can also reduce the force of water flow on the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the internal section of the wear-resistant high-strength valve stem proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the external structure of the wear-resistant and high-strength valve stem proposed by the utility model;

[0020] Figure 3 This is a schematic structural diagram of the internal cross-section of the valve stem of the wear-resistant high-strength valve stem proposed by the utility model;

[0021] Figure 4 The utility model is a cross-sectional schematic diagram of the elastic airbag of the wear-resistant and high-strength valve stem.

[0022] In the figure: 1 water pipe, 2 water inlet end baffle, 3 water outlet end baffle, 4 connecting plate, 5 connecting port, 6 valve stem housing, 7 air inlet hole, 8 elastic air bag, 9 piston, 10 arc rubber pad, 11 pull rod, 12 cushion block, 13 handle. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Reference Figure 1-Figure 4 , wear-resistant and high-strength valve stem, comprising: a water pipe 1 and a valve stem assembly, the valve stem assembly is arranged on the water pipe 1, the inner wall of the water pipe 1 is fixedly connected with an inlet end baffle 2 and a water outlet end baffle 3, the inlet end baffle 2 and the outlet end baffle 3 are respectively arranged on both sides of the valve stem assembly, a connecting plate 4 is arranged between the inlet end baffle 2 and the outlet end baffle 3, one end of the connecting plate 4 is fixedly connected to the lower surface of the inlet end baffle 2, and the end of the connecting plate 4 away from the inlet end baffle 2 is fixedly connected to the side of the outlet end baffle 3, and a connecting port 5 is arranged on the connecting plate 4. By arranging the inlet end baffle 2 and the outlet end baffle 3 on both sides of the valve stem, the impact force of the water flow can be slowed down during the water delivery process of the water pipe 1, thereby enhancing the protection of the valve stem;

[0025] The valve stem assembly includes a valve stem housing 6, a piston 9, an arc-shaped rubber pad 10, a pull rod 11, a cushion block 12 and a handle 13. The valve stem housing 6 is fixedly connected to the water pipe 1, the pull rod 11 is slidably connected to the upper surface of the valve stem housing 6, the piston 9 and the arc-shaped rubber pad 10 are arranged in the valve stem housing 6, the piston 9 is fixedly connected to the lower surface of the pull rod 11, the arc-shaped rubber pad 10 is fixedly connected to the side of the piston 9, the handle 13 is fixedly connected to the upper end of the pull rod 11, the cushion block 12 is fixedly connected to the pull rod 11, and the cushion block 12 is arranged below the handle 13. By converting the original rotating valve stem into a fixed valve stem, the thickened valve stem housing 6 can be used to provide a higher strength protection effect, which can not only enhance the connection strength between the valve stem and the water pipe 1, but also reduce the wear caused during the rotation process;

[0026] The upper surface of the valve stem housing 6 is provided with a plurality of air inlet holes 7, and the plurality of air inlet holes 7 are arranged in a circular array around the pull rod 11;

[0027] The inner concave surface of the arc-shaped rubber pad 10 is arranged on the lower surface, and the width of the arc-shaped rubber pad 10 is 2 cm greater than the distance between the piston 9 and the inner side wall of the valve stem housing 6;

[0028] The lower surface of the valve stem housing 6 is fixedly connected with an elastic airbag 8, the lower end of which is set to be hemispherical, and the elastic airbag 8 is set just above the connecting port 5. When the elastic airbag 8 is inflated, the elastic airbag 8 will also block the connecting port 5 in time, and because the elastic airbag 8 has better elasticity, it can also reduce the force of water flow on the valve stem;

[0029] The area of ​​the baffle plate 2 at the water inlet end is set to 3 / 4 of the cross section of the water pipe 1 , and the area of ​​the baffle plate 3 at the water outlet end is set to 1 / 2 of the cross section of the water pipe 1 .

[0030] The functional principle of the utility model can be explained through the following operation modes:

[0031] By arranging the water inlet end baffle 2 and the water outlet end baffle 3 on both sides of the valve stem, the impact force of the water flow can be reduced during the water delivery process of the water pipe 1, thereby enhancing the protection of the valve stem. When the water pipe 1 is cut off, the handle 13 must be pulled upward first, and then the piston 9 and the arc-shaped rubber pad 10 are driven upward by the pull rod 11, and then air is injected into the elastic airbag 8 by pressing downward. After the elastic airbag 8 is inflated, the elastic airbag 8 will also block the connecting port 5 in time, and because the elastic airbag 8 has better elasticity, it can also reduce the force of the water flow on the valve stem.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Wear-resistant high-strength valve stem, characterized by: The invention comprises a water pipe (1) and a valve stem assembly, wherein the valve stem assembly is arranged on the water pipe (1), the inner wall of the water pipe (1) is fixedly connected with a water inlet end baffle (2) and a water outlet end baffle (3), the water inlet end baffle (2) and the water outlet end baffle (3) are respectively arranged on both sides of the valve stem assembly, a connecting plate (4) is arranged between the water inlet end baffle (2) and the water outlet end baffle (3), one end of the connecting plate (4) is fixedly connected to the lower surface of the water inlet end baffle (2), one end of the connecting plate (4) away from the water inlet end baffle (2) is fixedly connected to the side of the water outlet end baffle (3), and a connecting port (5) is provided on the connecting plate (4).

2. The wear-resistant high-strength valve stem according to claim 1, characterized in that: in: The valve stem assembly comprises a valve stem housing (6), a piston (9), an arc-shaped rubber pad (10), a pull rod (11), a cushion block (12) and a handle (13); the valve stem housing (6) is fixedly connected to the water pipe (1); the pull rod (11) is slidably connected to the upper surface of the valve stem housing (6); the piston (9) and the arc-shaped rubber pad (10) are arranged in the valve stem housing (6); the piston (9) is fixedly connected to the lower surface of the pull rod (11); the arc-shaped rubber pad (10) is fixedly connected to the side of the piston (9); the handle (13) is fixedly connected to the upper end of the pull rod (11); the cushion block (12) is fixedly connected to the pull rod (11); and the cushion block (12) is arranged below the handle (13).

3. The wear-resistant high-strength valve stem according to claim 2, characterized in that: in: The upper surface of the valve stem housing (6) is provided with a plurality of air inlet holes (7), and the plurality of air inlet holes (7) are arranged in a circular array around the pull rod (11).

4. The wear-resistant high-strength valve stem according to claim 2, characterized in that: in: The inner concave surface of the arc-shaped rubber pad (10) is arranged on the lower surface, and the width of the arc-shaped rubber pad (10) is 2 cm greater than the distance between the piston (9) and the inner side wall of the valve stem housing (6).

5. The wear-resistant high-strength valve stem according to claim 2, characterized in that: in: The lower surface of the valve stem housing (6) is fixedly connected to an elastic airbag (8), the lower end of the elastic airbag (8) is arranged in a hemispherical shape, and the elastic airbag (8) is arranged directly above the communication port (5).

6. The wear-resistant high-strength valve stem according to claim 1, characterized in that: in: The area of ​​the water inlet end baffle (2) is set to 3 / 4 of the cross section of the water pipe (1), and the area of ​​the water outlet end baffle (3) is set to 1 / 2 of the cross section of the water pipe (1).

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