CN216447462U

CN216447462U - Eccentric valve for controlling slurry water flow for drilling

Info

Publication number: CN216447462U
Application number: CN202122898194.XU
Authority: CN
Inventors: 周辉; 张凤; 彭文敏
Original assignee: Zhuzhou Zhongke Wear Resistant New Material Technology Co ltd
Current assignee: Zhuzhou Zhongke Wear Resistant New Material Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-06
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an eccentric valve for controlling slurry water flow for drilling, which comprises a valve body, a water inlet positioned at one side of an inner cavity of the valve body, a water outlet positioned at the other side of the inner cavity of the valve body, a sealing edge around the water outlet, a half ball valve positioned between the water inlet and the water outlet, an upper valve shaft positioned above the half ball valve, and a lower valve shaft positioned below the half ball valve, wherein the top end part of the half ball valve is detachably connected with the upper valve shaft, the bottom end part of the lower half ball valve is detachably connected with the lower valve shaft, the half ball valve and the lower valve shaft can synchronously rotate along with the upper valve shaft, and the outer spherical surface of the half ball valve can be attached and sealed with the sealing edge. The top end part of the hemispherical valve is connected with the upper valve shaft in a matched manner through the detachable sliding grooves, and the bottom end part of the hemispherical valve is connected with the lower valve shaft in a matched manner through the detachable sliding grooves.

Description

Eccentric valve for controlling slurry water flow for drilling

Technical Field

The utility model relates to a control valve, in particular to an eccentric valve for controlling slurry water flow for drilling, and belongs to the technical field of valves.

Background

The eccentric valve has the advantages of simple and reasonable structure, free flow control and long service life when used for controlling relatively clean water in a pipeline. However, the problem of short service life is encountered when drilling underground for pipeline control of muddy water, which is difficult to solve even with highly hardened powder metallurgy materials. The reason is that the slurry water contains a large amount of silt, and in the long-term repeated opening and closing process, very fine sand grains with high hardness exist between the outer spherical surface (41) of the hemispherical valve and the edge of the inner port of the water outlet pipe, and slide relative to the edge of the inner port of the water outlet pipe along with the rotation of the opening and closing of the outer spherical surface (41) of the hemispherical valve, so that the edges of the outer spherical surface (41) of the hemispherical valve and the inner port of the water outlet pipe are scratched and damaged, and the abrasion of the outer spherical surface (41) of the hemispherical valve and the edge of the inner port of the water outlet pipe is accelerated to cause a gap between the outer spherical surface (41) of the hemispherical valve and the edge of the inner port of the water outlet pipe. Meanwhile, after the valve is opened, the high-pressure water flow can also wrap silt to continuously wash the outer spherical surface (41) of the hemispherical valve and the edge of the inner end opening of the water outlet pipe, so that the gap is further enlarged until the eccentric valve is scrapped due to serious water leakage.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are mainly as follows: the problem of how to extend the service life of an eccentric valve when drilling underground for pipeline control of muddy water.

The utility model comprises the following steps:

the utility model provides an eccentric valve of control mud discharge for probing, which comprises a valve body, be located the water inlet of valve body inner chamber one side, be located the delivery port of valve body inner chamber opposite side, the sealed edge around the delivery port, be located the hemisphere valve between water inlet and the delivery port, be located the last valve shaft of hemisphere valve top, be located the lower valve shaft of hemisphere valve below, be between hemisphere valve top portion and the last valve shaft and between lower hemisphere valve bottom portion and the lower valve shaft and dismantle the connection, hemisphere valve and lower valve shaft can be along with last valve shaft synchronous rotation, the ectosphere of hemisphere valve can be sealed with the laminating of sealed edge. The top end part of the hemispherical valve is connected with the upper valve shaft in a matched manner through the detachable sliding grooves, and the bottom end part of the hemispherical valve is connected with the lower valve shaft in a matched manner through the detachable sliding grooves.

Furthermore, the top end part and the bottom end part of the hemispherical valve are respectively provided with an upper rectangular bump and a lower rectangular bump, the lower end face of the upper valve shaft and the upper end face of the lower valve shaft are respectively provided with an upper rectangular sliding groove and a lower rectangular sliding groove, and the upper rectangular bump and the lower rectangular bump are respectively positioned in the upper rectangular sliding groove and the lower rectangular sliding groove and can slide in the upper rectangular sliding groove and the lower rectangular sliding groove.

Furthermore, according to the state when the hemisphere valve is closed, the upper rectangular sliding groove and the lower rectangular sliding groove are full-open towards one end of the water outlet.

Furthermore, according to the state when the hemisphere valve is closed, the walls of the upper rectangular chute and the lower rectangular chute, which face one end of the water inlet, are respectively provided with a flushing groove which can enable water in the water inlet to flush the upper rectangular chute and the lower rectangular chute.

Furthermore, a guide body is arranged on one side, which rotates towards the opening direction, of the sealing edge, the sealing edge is provided with a guide groove, and when the hemispherical valve is in an open state, a partial area, adjacent to the sealing edge, of the outer spherical surface of the hemispherical valve is still located in the guide groove.

Furthermore, according to the state when the hemisphere valve is closed, one side of the hemisphere valve towards the water inlet is in a concave spherical shape and is provided with a concave spherical space.

Has the advantages that: even if the abrasion between the hemispherical valve (4) and the sealing edge (31) is accelerated by silt contained in the water flow, the eccentric valve can have the function of sealing and closing for a long time, and the service life of the eccentric valve is remarkably prolonged.

Drawings

FIG. 1 is a schematic axial cross-sectional view of the eccentric valve showing the attachment of the hemispherical valve to the sealing lip and the eccentric valve in a closed position;

FIG. 2 is a schematic axial cross-sectional view of the eccentric valve showing the hemispherical valve detached from the sealing lip;

FIG. 3 is a perspective view of the half ball valve, the upper valve shaft and the lower valve shaft;

fig. 4 is a perspective view of the half ball valve, the upper valve shaft, and the lower valve shaft in a connected state.

In the figure: 1. a valve body; 2. a water inlet; 3. a water outlet; 31. sealing the edges; 32. a guide body; 321. a guide groove; 4. a half ball valve; 41. an outer spherical surface; 42. a concave spherical space; 5. an upper valve shaft; 6. a lower valve shaft; 7. an upper rectangular bump; 8. a lower rectangular bump; 9. an upper rectangular chute; 10. a lower rectangular chute; 11. a water flushing tank.

Detailed Description

The utility model is further described with reference to the accompanying drawings in which:

as shown in fig. 1-4, an eccentric valve for controlling slurry water flow for drilling comprises a valve body 1, a water inlet 2 located on one side of an inner cavity of the valve body 1, a water outlet 3 located on the other side of the inner cavity of the valve body 1, an annular sealing edge 31 around the water outlet, a half ball valve 4 located between the water inlet 2 and the water outlet 3, an upper valve shaft 5 located above the half ball valve 4, and a lower valve shaft 6 located below the half ball valve 4, wherein the top end of the half ball valve 4 is detachably connected with the upper valve shaft 5, and the bottom end of the lower half ball valve 4 is detachably connected with the lower valve shaft 6, the half ball valve 4 and the lower valve shaft 6 can synchronously rotate along with the upper valve shaft 5, an outer spherical surface 41 of the half ball valve 4 can be attached and sealed with the sealing edge 31, so that the eccentric valve is in a closed state. Between hemisphere valve 4 top portion and the last valve shaft 5 to and between hemisphere valve 4 bottom portion and the lower valve shaft 6 be detachable spout cooperation and be connected, when having the clearance between hemisphere valve 4 and sealed edge 31, can promote hemisphere valve 4 and slide to sealed edge 31 direction between last valve shaft 5 and the lower valve shaft 6 under the water pressure effect of the rivers that gush in the water inlet, make hemisphere valve 4 and sealed edge 31 laminating sealed. Even if the abrasion between the hemispherical valve 4 and the sealing edge 31 is accelerated by silt contained in the water flow, the eccentric valve can have the function of sealing and closing for a long time, and the service life of the eccentric valve can be remarkably prolonged.

The top end of the hemispherical valve 4 and the bottom end of the hemispherical valve 4 are respectively provided with an upper rectangular convex block 7 and a lower rectangular convex block 8, the lower end face of the upper valve shaft 5 and the upper end face of the lower valve shaft 6 are respectively provided with an upper rectangular sliding groove 9 and a lower rectangular sliding groove 10, and the upper rectangular convex block 7 and the lower rectangular convex block 8 are respectively positioned in the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10 and can slide in the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10.

The upper rectangular chute 9 and the lower rectangular chute 10 may be provided at the top end of the half ball valve 4 and the bottom end of the half ball valve 4. Accordingly, the upper rectangular projection 7 and the lower rectangular projection 8 may be provided on the upper valve shaft 5 and the lower valve shaft 6, respectively.

When the hemispherical valve 4 is in a closed state, the ends of the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10 facing the water outlet 3 are all open. Therefore, the silt accumulated in the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10 is pushed out of the groove by the upper rectangular convex block 7 and the lower rectangular convex block 8.

According to the state that the hemispherical valve 4 is closed, the groove walls of the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10, which face the end of the water inlet 2, are respectively provided with a flushing groove 11 which can enable water in the water inlet 2 to flush the upper rectangular sliding groove 9 and the lower rectangular sliding groove 10. Therefore, water flowing into the water inlet can flow into the upper rectangular chute 9 and the lower rectangular chute 10 through the water flushing groove 11, and silt in the upper rectangular chute 9 and the lower rectangular chute 10 is flushed away.

The sealing edge 31 is provided with a guide body 32 towards the side of the hemisphere valve 4 rotating towards the opening direction, the guide body 32 is provided with a guide groove 321, and when the hemisphere valve 4 is in an opening state, a partial area of the outer spherical surface 41 of the hemisphere valve 4 adjacent to the sealing edge 31 is still positioned in the guide groove 321. Because the top end of the half ball valve 4 is connected with the upper valve shaft 5 in a sliding way matching way, and the bottom end of the half ball valve 4 is connected with the lower valve shaft 6 in a sliding way matching way, the half ball valve 4 can slide between the upper valve shaft 5 and the lower valve shaft 6, and the guide body 32 is arranged to prevent the half ball valve 4 from sliding over-position, so that the half ball valve 4 can normally rotate towards the closing direction.

According to the state when the hemisphere valve 4 is closed, one side of the hemisphere valve 4 facing the water inlet is in a concave spherical shape, and the hemisphere valve has a concave spherical space 42. This enables the water flow from the water inlet to flush into the concave spherical space 42, so that the outer spherical surface 41 of the half ball valve 4 is pressed against the sealing edge 31 with a greater pressure.

The above-described embodiments are intended to illustrate the utility model more clearly and should not be construed as limiting the scope of the utility model covered thereby, any modification of the equivalent should be considered as falling within the scope of the utility model covered thereby.

Claims

1. The utility model provides an eccentric valve of drilling with control mud discharge, including valve body (1), be located water inlet (2) of valve body (1) inner chamber one side, be located delivery port (3) of valve body (1) inner chamber opposite side, sealed edge (31) around the delivery port, be located hemisphere valve (4) between water inlet (2) and delivery port (3), be located last valve shaft (5) of hemisphere valve (4) top, be located lower valve shaft (6) of hemisphere valve (4) below, be between hemisphere valve (4) top portion and last valve shaft (5) and be the dismantlement connection between hemisphere valve (4) bottom portion and lower valve shaft (6), hemisphere valve (4) and lower valve shaft (6) can be along with last valve shaft (5) synchronous rotation, hemisphere valve (4) the ectosphere (41) can be sealed with sealed edge (31) laminating, a serial communication port: between hemisphere valve (4) top portion and upper valve axle (5), and be detachable spout cooperation connection between hemisphere valve (4) bottom end and lower valve axle (6), when having the clearance between hemisphere valve (4) and sealed edge (31), under the water pressure effect, hemisphere valve (4) can slide to sealed edge (31) direction between upper valve axle (5) and lower valve axle (6), make hemisphere valve (4) and sealed edge (31) laminating seal, make hemisphere valve (4) be in the closed condition all the time.

2. The eccentric valve for controlling the flow of mud water for drilling according to claim 1, wherein: the semi-spherical valve is characterized in that an upper rectangular convex block (7) and a lower rectangular convex block (8) are respectively arranged at the top end of the semi-spherical valve (4) and the bottom end of the semi-spherical valve (4), an upper rectangular sliding groove (9) and a lower rectangular sliding groove (10) are respectively arranged on the lower end face of the upper valve shaft (5) and the upper end face of the lower valve shaft (6), and the upper rectangular convex block (7) and the lower rectangular convex block (8) are respectively positioned in the upper rectangular sliding groove (9) and the lower rectangular sliding groove (10) and can slide in the upper rectangular sliding groove (9) and the lower rectangular sliding groove (10).

3. The eccentric valve for controlling the flow of mud water for drilling according to claim 2, wherein: according to the state that the hemisphere valve (4) is closed, one end of the upper rectangular sliding groove (9) and one end of the lower rectangular sliding groove (10) facing the water outlet (3) are all open.

4. The eccentric valve for controlling the flow of mud water for drilling according to claim 3, wherein: according to the state when the hemisphere valve (4) is closed, the groove walls of the upper rectangular sliding groove (9) and the lower rectangular sliding groove (10) which face one end of the water inlet (2) are respectively provided with a flushing groove (11) which can enable water of the water inlet (2) to flush the upper rectangular sliding groove (9) and the lower rectangular sliding groove (10).

5. The eccentric valve for controlling the flow of mud water for drilling according to claim 1, wherein: the sealing edge (31) is provided with a guide body (32) towards one side of the hemispherical valve (4) rotating towards the opening direction, the guide body (32) is provided with a guide groove (321), and when the hemispherical valve (4) is in an opening state, a part of area, adjacent to the sealing edge (31), of an outer spherical surface (41) of the hemispherical valve (4) is still located in the guide groove (321).

6. The eccentric valve for controlling the flow of mud water for drilling according to claim 2, wherein: according to the state when the hemisphere valve (4) is closed, one side of the hemisphere valve (4) facing the water inlet is in a concave spherical shape and is provided with a concave spherical space (42).