A valve tail end adjustment mechanism

Abstract

The utility model discloses a valve tail end adjustment mechanism, which relates to the field of valve technology, including a valve body, a base is arranged at the middle position of the bottom of the valve body, a valve plate is arranged at the internal cavity of the valve body and at a position corresponding to the vertical center of the base, a valve shaft is arranged at the bottom center of the valve plate; a through-type groove is opened inside the base, and a support seat is arranged in the groove. The utility model arranges the interior of the base at the bottom center of the valve body into a hollow structure, arranges a support seat inside the groove of the base, connects the support seat with the bottom of the valve shaft, supports the valve shaft and the valve plate through the support seat, and installs a sealing cover on the outside of the base, and the adjusting screw installed vertically at the bottom of the sealing cover can adjust the support seat, and then when the gasket on the support seat is worn, the height of the support seat is adjusted by adjusting the screw, so that the height of the valve shaft can be kept at a suitable position.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve tail end adjustment mechanism. Background Art

[0002] A valve is a device used to control the flow of fluids (such as gases, liquids, etc.) and is widely used in industries, construction, water conservancy and other fields. The main function of a valve is to open, close or adjust the flow of fluids to meet various process requirements. The butterfly valve is a regulating valve with a simple structure. Its main feature is that the closing part (valve disc or butterfly plate) is disc-shaped and rotates around the valve shaft to achieve opening and closing. The butterfly valve mainly plays a cutting and throttling role in the pipeline and is suitable for the control of various types of fluids, such as air, water, steam, corrosive media, mud, oil, etc. The valve disc is the closing part of the butterfly valve. It adopts a disc-shaped design and rotates around the valve shaft to achieve opening and closing. The sealing performance between the valve disc and the valve body determines the leakage of the butterfly valve.

[0003] After long-term use, the bottom of the valve shaft at the lower end of the valve and the bottom of the valve body will often rub against each other, which will cause the friction pad to wear and a gap to appear between the friction pad and the end cover, causing the valve plate to sink, thereby causing the valve plate and the internal cavity of the valve body to be misaligned. When the valve is closed, friction occurs between the valve and the internal cavity of the valve body, which will not only cause the valve to not close properly, but also excessive friction between the valve and the internal cavity of the valve body will cause wear on the inside of the valve body and the edges of the valve, resulting in serious leakage.

[0004] Therefore, it is necessary to invent a valve tail end adjustment mechanism to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a valve tail end adjustment mechanism to solve the above-mentioned technical deficiencies.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve tail end adjustment mechanism, comprising a valve body, a base is arranged at the middle position of the bottom of the valve body, a valve plate is arranged in the internal cavity of the valve body and at a position corresponding to the vertical center of the base, and a valve shaft is arranged at the bottom center of the valve plate;

[0007] A through-type groove is provided inside the base, a support seat is arranged inside the groove, a sealing cover is sleeved on the outside of the base, a through hole is provided at the bottom of the sealing cover, an adjusting screw is arranged at the bottom of the sealing cover, the front end of the adjusting screw passes through the through hole and is threadedly connected to the through hole, and the front end of the adjusting screw contacts the bottom of the support seat.

[0008] As a preferred solution of the utility model, a positioning hole is vertically opened at the center of the bottom of the valve shaft, and a slide groove is opened at the bottom of the valve shaft near the edge, and the slide groove is in a circular ring structure.

[0009] As a preferred solution of the utility model, a positioning rod is vertically fixedly installed at the center of the upper end of the support seat, and the positioning rod corresponds to and fits with the positioning hole at the bottom of the valve shaft. A plurality of balls are rotatably installed at the upper end of the support seat and at a corresponding position to the slide groove at the bottom of the valve shaft. The balls are evenly distributed in a circular array and fit with the slide groove.

[0010] As a preferred solution of the utility model, the sealing cover is threadedly connected to the base, and sealing rings are installed on the upper and lower surfaces of the bottom of the sealing cover and at positions corresponding to the through holes, and the sealing rings are adapted to the adjusting screw.

[0011] As a preferred solution of the utility model, at least one gasket is provided at the bottom of the sealing ring below the lower surface of the bottom of the sealing cover, the gasket is sleeved on the adjusting screw, and the outer diameter of the gasket is larger than the outer diameter of the tail end of the adjusting screw.

[0012] As a preferred solution of the utility model, the positioning rod, the ball and the valve shaft are all made of metal materials, the exterior of the positioning rod is a smooth surface, and the valve shaft is located in the groove body of the base.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The base at the bottom center of the valve body is set as a hollow structure, and a support seat is set inside the groove of the base, which is connected to the bottom of the valve shaft through the support seat, the valve shaft and the valve plate are supported by the support seat, and a sealing cover is installed on the outside of the base. The adjusting screw vertically installed at the bottom of the sealing cover can adjust the support seat. When the gasket on the support seat is worn, the height of the support seat is adjusted by adjusting the screw, so that the height of the valve shaft can be maintained at an appropriate position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 4 It is a cross-sectional exploded view of the overall mechanism of the utility model;

[0020] Figure 5 For this utility model Figure 4 Magnified view of area A.

[0021] Description of reference numerals:

[0022] 1. Valve body; 2. Valve plate; 3. Base; 31. Trough body; 4. Sealing cover; 41. Through hole; 5. Valve shaft; 51. Positioning hole; 52. Slide groove; 6. Support seat; 61. Positioning rod; 62. Ball bearing; 7. Adjusting screw; 71. Sealing ring; 72. Gasket. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model provides Figure 1-5 A valve tail end adjustment mechanism shown in the figure comprises a valve body 1, a base 3 is arranged at the middle position of the bottom of the valve body 1, a valve plate 2 is arranged in the internal cavity of the valve body 1 and at a position corresponding to the vertical center of the base 3, and a valve shaft 5 is arranged at the bottom center of the valve plate 2. The design of the valve body 1, the base 3, the valve plate 2 and the valve shaft 5 ensures the normal opening and closing of the valve and reduces the risk of leakage;

[0025] A through-type groove 31 is provided inside the base 3, a support seat 6 is arranged inside the groove 31, a sealing cover 4 is sleeved on the outside of the base 3, a through hole 41 is provided at the bottom of the sealing cover 4, an adjusting screw 7 is arranged at the bottom of the sealing cover 4, the front end of the adjusting screw 7 passes through the through hole 41 and is threadedly connected to the through hole 41, the front end of the adjusting screw 7 contacts the bottom of the support seat 6, the through-type groove 31 and the support seat 6 in the base 3, as well as the through hole 41 and the adjusting screw 7 in the sealing cover 4, realize the adjustment function of the tail end of the valve, so that the friction and wear between the bottom of the valve shaft 5 and the bottom of the valve body 1 can be effectively avoided during long-term use of the valve.

[0026] Furthermore, in the above technical solution, a positioning hole 51 is vertically opened at the center of the bottom of the valve shaft 5, and a slide groove 52 is opened at the bottom of the valve shaft 5 and near the edge, and the slide groove 52 is in a circular ring structure.

[0027] Furthermore, in the above technical solution, a positioning rod 61 is vertically fixedly installed at the center of the upper end of the support seat 6, and the positioning rod 61 corresponds to and fits with the positioning hole 51 at the bottom of the valve shaft 5. A plurality of balls 62 are rotatably installed at the upper end of the support seat 6 and at a corresponding position to the slide groove 52 at the bottom of the valve shaft 5. The balls 62 are evenly distributed in a circular array and fit with the slide groove 52, so that when the valve shaft 5 rotates on the support seat 6, the friction between the bottom of the valve shaft 5 and the upper surface of the support seat 6 is reduced.

[0028] Furthermore, in the above technical solution, the sealing cover 4 is threadedly connected to the base 3, and sealing rings 71 are installed on the upper and lower surfaces of the bottom of the sealing cover 4 and at the corresponding positions of the through hole 41. The sealing ring 71 is adapted to the adjusting screw 7, and the sealing ring 71 increases the sealing performance between the through hole 41 and the adjusting screw 7.

[0029] Furthermore, in the above technical solution, at least one gasket 72 is provided at the bottom of the sealing ring 71 below the lower surface of the bottom of the sealing cover 4, and the gasket 72 is sleeved on the adjusting screw 7. The outer diameter of the gasket 72 is larger than the outer diameter of the tail end of the adjusting screw 7. The setting of the sealing ring 71 and the gasket 72 ensures the sealing performance of the valve during the adjustment process and avoids the occurrence of leakage.

[0030] Furthermore, in the above technical solution, the positioning rod 61, the ball 62 and the valve shaft 5 are all made of metal materials, and the exterior of the positioning rod 61 is a smooth surface to avoid friction between the positioning hole 51 of the valve shaft 5 and the exterior of the positioning rod 61. The valve shaft 5 is located in the groove body 31 of the base 3.

[0031] The valve tail end adjustment mechanism provided by the utility model has the following working process when in use:

[0032] The valve plate 2 is installed in the cavity of the valve body 1, and the valve shaft 5 at the bottom of the valve plate 2 is inserted into the groove 31 of the base 3. Then, a sealing ring 71 is placed inside the sealing cover 4, and then another sealing ring 71 and at least one gasket 72 are sleeved on the adjusting screw 7. The adjusting screw 7 is screwed and inserted into the through hole 41 at the bottom of the sealing cover 4. Then, the support seat 6 is placed inside the sealing cover 4, and the support seat 6 is placed above the front end of the adjusting screw 7. Then, the sealing cover 4 is placed below the base 3, and the support seat 6 is placed above the front end of the adjusting screw 7. The positioning rod 61 is inserted into the positioning hole 51 at the bottom of the valve shaft 5, and the ball 62 above the support seat 6 is inserted into the annular groove 52 at the bottom of the valve shaft 5, and then the sealing cover 4 is screwed to make it threadedly connected to the outside of the base 3. Then, according to the position of the valve plate 2 inside the valve body 1, the adjusting screw 7 is rotated forward or reversed to make the support seat 6 touch the bottom of the valve shaft 5 at different heights, so that the valve plate 2 is at a suitable position height to prevent the valve plate 2 from bumping against the inside of the valve body 1 and affecting its rotation.

[0033] Since a rubber gasket is installed above the support seat 6, after the support seat 6 has been used for a period of time, the rubber gasket is worn, and the height of the valve shaft 5 in the groove 31 of the base 3 is reduced. Then, by rotating the adjusting screw 7, the support seat 6 is touched. When the support seat 6 rises a certain distance, the valve shaft 5 rises and returns to its original position, thereby resetting the valve plate 2.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A valve tail end adjustment mechanism, comprising a valve body (1), characterized in that: A base (3) is arranged at the middle position of the bottom of the valve body (1), a valve plate (2) is arranged in the internal cavity of the valve body (1) and at a position corresponding to the vertical center of the base (3), and a valve shaft (5) is arranged at the bottom center of the valve plate (2); A through-type groove (31) is provided inside the base (3), a support seat (6) is arranged inside the groove (31), a sealing cover (4) is sleeved on the outside of the base (3), a through hole (41) is provided at the bottom of the sealing cover (4), an adjusting screw (7) is arranged at the bottom of the sealing cover (4), a front end of the adjusting screw (7) passes through the through hole (41) and is threadedly connected to the through hole (41), and a front end of the adjusting screw (7) is in contact with the bottom of the support seat (6).

2. A valve tail end adjustment mechanism according to claim 1, characterized in that: A positioning hole (51) is vertically provided at the center of the bottom of the valve shaft (5), and a sliding groove (52) is provided at the bottom of the valve shaft (5) and near the edge, and the sliding groove (52) is in a circular ring structure.

3. A valve tail end adjustment mechanism according to claim 2, characterized in that: A positioning rod (61) is vertically fixedly installed at the center of the upper end of the support seat (6), and the positioning rod (61) corresponds to and fits with the positioning hole (51) at the bottom of the valve shaft (5). A plurality of balls (62) are rotatably installed at the upper end of the support seat (6) and at a corresponding position to the slide groove (52) at the bottom of the valve shaft (5), and the balls (62) are evenly distributed in a ring array and fit with the slide groove (52).

4. A valve tail end adjustment mechanism according to claim 1, characterized in that: The sealing cover (4) is threadedly connected to the base (3); sealing rings (71) are installed on the upper and lower surfaces of the bottom of the sealing cover (4) and at positions corresponding to the through hole (41); and the sealing rings (71) are compatible with the adjusting screw (7).

5. A valve tail end adjustment mechanism according to claim 4, characterized in that: At least one gasket (72) is provided at the bottom of the sealing ring (71) below the lower surface of the bottom of the sealing cover (4); the gasket (72) is sleeved on the adjusting screw (7); and the outer diameter of the gasket (72) is larger than the outer diameter of the tail end of the adjusting screw (7).

6. A valve tail end adjustment mechanism according to claim 3, characterized in that: The positioning rod (61), the ball (62) and the valve shaft (5) are all made of metal materials. The exterior of the positioning rod (61) is a smooth surface, and the valve shaft (5) is located in the groove body (31) of the base (3).

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