CN214197261U

CN214197261U - Redundant double-valve switch

Info

Publication number: CN214197261U
Application number: CN202022780174.8U
Authority: CN
Inventors: 吴东; 张辉建; 李仁凯
Original assignee: China Electronics System Engineering No3 Construction Co ltd
Current assignee: China Electronics System Engineering No3 Construction Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-09-14
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a redundancy bivalve switch, concretely relates to valve technical field, including preceding valve body, preceding valve body one side is provided with the connector, the connector face is provided with first connection thread circle to preceding valve body one side, preceding valve body is towards connector one side and the connector threaded connection that first connection thread circle belongs to, one side of connector is provided with the back valve body, the connector face is provided with second connection thread circle to back valve body one side, back valve body is towards connector one side and the connector threaded connection that second connection thread circle belongs to, preceding valve body all is provided with the pressure cap with back valve body top. The utility model discloses a valve body, back valve body before setting up, valve body before general use when in-service use, when current valve body damages, because there is the existence of back valve body, the maintenance that makes or change convenience very, preceding valve body is the same with back valve body structure moreover, can replace mutually, has brought the convenience for subsequent maintenance.

Description

Redundant double-valve switch

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a redundancy bivalve switch.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to the function, the valve can be divided into a shut-off valve, a check valve, a regulating valve and the like, wherein the valve is a control part in a fluid conveying system and has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

However, in practical use, after the valve body is damaged, the valve body is not provided with the rear valve, so that the maintenance of the front valve is inconvenient to disassemble or maintain, and the water resource is wasted due to the fact that the valve body cannot be maintained or replaced in time, and therefore a redundant double-valve switch needs to be provided to solve the problems in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a redundancy bivalve switch aims at solving the valve body damage back that the aforesaid exists, because there is no rearmounted valve for the leading valve of maintenance is dismantled or is maintained inconvenient problem.

The utility model discloses a realize like this, the utility model provides a following technical scheme: a redundant double-valve switch comprises a front valve body, wherein a connector is arranged on one side of the front valve body, a first connecting threaded ring is arranged on one side of the front valve body facing the front valve body, the side of the front valve body facing the connector is in threaded connection with the connector to which the first connecting threaded ring belongs, a rear valve body is arranged on one side of the connector, a second connecting threaded ring is arranged on one side of the rear valve body facing the rear valve body, one side of the rear valve body facing the connector is in threaded connection with the connector to which the second connecting threaded ring belongs, pressing caps are arranged on the top of the front valve body and the top of the rear valve body, a packing gland is arranged on the top of the pressing cap, a valve rod is arranged on the top of the packing gland, one end of the valve rod sequentially penetrates through the packing gland and the pressing cap from top to bottom of the pressing cap, a fixed seat is arranged on the bottom of the valve rod, a valve plug is arranged on the bottom of the fixed seat, and the top of the valve plug is fixedly connected with the top of the fixed seat, the front valve body and the top of the inner cavity of the rear valve body are provided with a first L-shaped flow-limiting sealing plate, one side of the first L-shaped flow-limiting sealing plate is provided with an inlet channel, the bottom of the inner cavity of the front valve body and the bottom of the inner cavity of the rear valve body are provided with a second L-shaped flow-limiting sealing plate, one side of the second L-shaped flow-limiting sealing plate is provided with an outlet channel, and a water passing hole is formed between the first L-shaped flow-limiting sealing plate and the second L-shaped flow-limiting sealing plate.

In a preferred embodiment, a sealing groove is formed at the bottom of the sealing plate, a first sealing ring is arranged inside the sealing groove, a first positioning groove is formed at the bottom of the first L-shaped flow-limiting sealing plate, and a second positioning groove is formed at the top of the second L-shaped flow-limiting sealing plate.

In a preferred embodiment, the top of the valve rod is provided with a rotating handwheel, and the bottom of the rotating handwheel is fixedly connected with the top of the valve rod.

In a preferred embodiment, a second sealing ring is arranged at the joint of the front valve body and the first connecting thread ring, and a third sealing ring is arranged at the joint of the rear valve body and the second connecting thread ring.

In a preferred embodiment, the valve plug is trapezoidal in cross-section.

In a preferred embodiment, the surface of the rotating handwheel is provided with an anti-rust layer, and the anti-rust layer is made of an anti-rust paint material.

In a preferred embodiment, a groove is formed at the joint of the valve rod and the pressing cap, and a sealing block is arranged inside the groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the arrangement of the front valve body and the rear valve body, the front valve body is generally used in actual use, when the front valve body is damaged, due to the existence of the rear valve body, the maintenance or the replacement is very convenient, the water flow is controlled by the front valve body and the rear valve body, the leakage is prevented by double insurance, the waste of water resources is avoided, the purpose of saving water is realized, the water pressure of a pipeline can be adjusted by adjusting the front valve body or the rear valve body, the splashing is reduced, the practicability is improved, the front valve body and the rear valve body are identical in structure and can be mutually replaced, and the convenience is brought to subsequent maintenance;

2. through setting up first constant head tank, second constant head tank, first sealing washer, sealed piece, before closing valve body or back valve body, first sealing washer chucking is in first constant head tank and second constant head tank to further strengthen the valve plug and cross the leakproofness between the water hole, thereby improve the leakproofness of preceding valve body and back valve body, and sealed piece can avoid water to flow from the gap between valve stem and the pressure cap, thereby also improved the leakproofness of preceding valve body and back valve body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic overall sectional structural view of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

FIG. 4 is a schematic view of the overlooking structure of the fixing base of the present invention

In the figure: 1. a front valve body; 2. a linker; 3. a first connecting thread ring; 4. a second connecting thread ring; 5. pressing the cap; 6. a packing gland; 7. a valve stem; 8. a fixed seat; 9. a valve plug; 10. a first L-shaped flow-limiting sealing plate; 11. an inlet channel; 12. a second L-shaped flow-limiting sealing plate; 13. an outlet channel; 14. water passing holes; 15. a sealing groove; 16. a first seal ring; 17. a first positioning groove; 18. a second positioning groove; 19. rotating a hand wheel; 20. a second seal ring; 21. a third seal ring; 22. a groove; 23. a sealing block; 24. a rear valve body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in attached figures 1-4, a redundant double-valve switch comprises a front valve body 1, a connecting body 2 is arranged on one side of the front valve body 1, a first connecting thread ring 3 is arranged on one side of the connecting body 2 facing the front valve body 1, one side of the front valve body 1 facing the connecting body 2 is in threaded connection with the connecting body 2 to which the first connecting thread ring 3 belongs, a rear valve body 24 is arranged on one side of the connecting body 2, a second connecting thread ring 4 is arranged on one side of the connecting body 2 facing the rear valve body 24, one side of the rear valve body 24 facing the connecting body 2 is in threaded connection with the connecting body 2 to which the second connecting thread ring 4 belongs, a gland 5 is arranged on the top of each of the front valve body 1 and the rear valve body 24, a packing gland 6 is arranged on the top of the gland 5, a valve rod 7 is arranged on the top of the packing gland 6, one end of the valve rod 7 sequentially penetrates through the packing gland 6 and the pressing cap 5 from top to bottom and extends to the bottom of the pressing cap 5, a fixed seat 8 is arranged on the bottom of the valve rod 7, the bottom of the fixed seat 8 is provided with a valve plug 9, the top of the valve plug 9 is fixedly connected with the top of the fixed seat 8, the top of the inner cavity of the front valve body 1 and the top of the inner cavity of the rear valve body 24 are provided with a first L-shaped flow-limiting sealing plate 10, one side of the first L-shaped flow-limiting sealing plate 10 is provided with an inlet channel 11, the bottom of the inner cavity of the front valve body 1 and the bottom of the inner cavity of the rear valve body 24 are provided with a second L-shaped flow-limiting sealing plate 12, one side of the second L-shaped flow-limiting sealing plate 12 is provided.

As shown in fig. 3, a sealing groove 15 is formed in the bottom of the fixing seat 8, a first sealing ring 16 is arranged inside the sealing groove 15, a first positioning groove 17 is formed in the bottom of the first L-shaped flow-limiting sealing plate 10, a second positioning groove 18 is formed in the top of the second L-shaped flow-limiting sealing plate 12, when the front valve body 1 or the rear valve body 24 is closed, the first sealing ring 16 at the bottom of the fixing seat 8 is clamped in the first positioning groove 17 and the second positioning groove 18, so that the sealing performance between the valve plug 9 and the water through hole 14 is further enhanced, and the sealing performance between the front valve body 1 and the rear valve body 24 is improved.

As shown in the attached figure 2, the top of the valve rod 7 is provided with a rotating hand wheel 19, the bottom of the rotating hand wheel 19 is fixedly connected with the top of the valve rod 7, the front valve body 1 or the rear valve body 24 is opened by controlling the rotating hand wheel 19, the whole operation is simple and convenient, and therefore the practicability is improved.

As shown in fig. 2, a second sealing ring 20 is provided at a junction of the front valve body 1 and the first coupling screw ring 3, and a third sealing ring 21 is provided at a junction of the rear valve body 24 and the second coupling screw ring 4, in order to connect the connection body 2 with the front valve body 1 and the rear valve body 24.

As shown in the attached figure 3, the cross section of the valve plug 9 is trapezoidal, and the trapezoidal structure can better block the water through hole 14 through the valve plug 9, so that the sealing performance is improved.

As shown in fig. 2, the surface of the rotating hand wheel 19 is provided with an anti-rust layer, the anti-rust layer is made of an anti-rust paint material, so that the rotating hand wheel 19 is prevented from rusting after being used for a short time, and the anti-rust layer can prolong the service life of the rotating hand wheel 19, thereby improving the practicability.

As shown in fig. 2, a groove 22 is formed at the joint of the valve rod 7 and the pressing cap 5, a sealing block 23 is arranged in the groove 22, and a gap between the valve rod 7 and the pressing cap 5 can be blocked by the sealing block 23, so that water is prevented from flowing out from the gap between the valve rod 7 and the pressing cap 5, and the sealing performance of the front valve body 1 and the rear valve body 24 is improved.

The utility model discloses the theory of operation: in practical use, when the front valve body 1 or the rear valve body 24 needs to be opened, the rotating hand wheel 19 is controlled to rotate, the rotating hand wheel 19 drives the valve rod 7 to rotate, the valve rod 7 rises, at this time, the water hole is not blocked by the valve plug 9 at the bottom of the valve rod 7, water flows through the water hole 14, when the front valve body 1 or the rear valve body 24 needs to be closed, the rotating hand wheel 19 is controlled, the rotating hand wheel 19 drives the valve rod 7 to rotate, the valve rod 7 descends, at this time, the water hole is blocked by the valve plug 9 at the bottom of the valve rod 7, meanwhile, the first sealing ring 16 in the sealing groove 15 enters the first positioning groove 17 at the bottom of the first L-shaped flow-limiting sealing plate 10 and the second positioning groove 18 formed at the top of the second L-shaped flow-limiting sealing plate 12, the sealing performance between the valve plug 9 and the water hole 14 is further enhanced, so that the sealing performance between the front valve body 1 and the rear valve body 24 is improved, and the water flow is controlled through the front valve body 1 and the rear valve body 24, the dual fail-safe prevents to leak, also can adjust pipeline water pressure through adjusting preceding valve body 1 or back valve body 24, reduces the splash, has improved the practicality, and preceding valve body 1 is the same with back valve body 24 structure moreover, can replace each other, has brought the convenience for subsequent maintenance.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A redundant double valve switch which is characterized in that: the valve comprises a front valve body, wherein a connector is arranged on one side of the front valve body, a first connecting threaded ring is arranged on one side of the front valve body facing the front valve body, one side of the front valve body facing the connector is in threaded connection with the connector to which the first connecting threaded ring belongs, a rear valve body is arranged on one side of the connector, a second connecting threaded ring is arranged on one side of the rear valve body facing the rear valve body, one side of the rear valve body facing the connector is in threaded connection with the connector to which the second connecting threaded ring belongs, gland caps are arranged on the top of the front valve body and the top of the rear valve body, a packing gland is arranged on the top of the gland, a valve rod is arranged on the top of the packing gland, one end of the valve rod sequentially penetrates through the packing gland and the gland cap from top to bottom and extends to the bottom of the gland, a fixed seat is arranged on the bottom of the valve rod, a valve plug is arranged on the bottom of the fixed seat, and the top of the valve plug is fixedly connected with the top of the fixed seat, the front valve body and the top of the inner cavity of the rear valve body are provided with a first L-shaped flow-limiting sealing plate, one side of the first L-shaped flow-limiting sealing plate is provided with an inlet channel, the bottom of the inner cavity of the front valve body and the bottom of the inner cavity of the rear valve body are provided with a second L-shaped flow-limiting sealing plate, one side of the second L-shaped flow-limiting sealing plate is provided with an outlet channel, and a water passing hole is formed between the first L-shaped flow-limiting sealing plate and the second L-shaped flow-limiting sealing plate.

2. A redundant double valve switch according to claim 1, wherein: the sealing structure is characterized in that a sealing groove is formed in the bottom of the fixing seat, a first sealing ring is arranged in the sealing groove, a first positioning groove is formed in the bottom of the first L-shaped current-limiting sealing plate, and a second positioning groove is formed in the top of the second L-shaped current-limiting sealing plate.

3. A redundant double valve switch according to claim 1, wherein: the top of the valve rod is provided with a rotating hand wheel, and the bottom of the rotating hand wheel is fixedly connected with the top of the valve rod.

4. A redundant double valve switch according to claim 1, wherein: and a second sealing ring is arranged at the joint of the front valve body and the first connecting threaded ring, and a third sealing ring is arranged at the joint of the rear valve body and the second connecting threaded ring.

5. A redundant double valve switch according to claim 1, wherein: the cross section of the valve plug is trapezoidal.

6. A redundant double valve switch according to claim 3, wherein: an anti-rust layer is arranged on the surface of the rotating hand wheel and is made of an anti-rust paint material.

7. A redundant double valve switch according to claim 1, wherein: the valve rod is provided with a groove at the joint of the pressure cap, and a sealing block is arranged in the groove.