CN220749127U - Combined valve - Google Patents

Abstract

The utility model discloses a combined valve, which relates to the technical field of valves and comprises a stop valve assembly and a check valve assembly, wherein the stop valve assembly is used for opening or cutting off medium circulation in a pipeline, the stop valve assembly is provided with an inlet end and an outlet end, the check valve assembly comprises a check valve body, the check valve body is provided with an inlet cavity and an outlet cavity, the inlet cavity is in sealing connection with the outlet end of the stop valve assembly, a first check assembly is arranged in the inlet cavity, a second check assembly is arranged in the outlet cavity, a valve cover is arranged on the check valve body, the valve cover is detachably connected with the check valve body through bolts, a shaft seat is arranged in the check valve body, and the first check assembly is detachably connected with the shaft seat. The combined valve can be suitable for the scene with smaller part of installation space, can realize the replacement of the first check assembly under the condition that the whole combined valve is not required to be dismounted, is convenient to replace, and is beneficial to saving the cost.

Description

Combined valve

Technical Field

The utility model relates to the technical field of valves, in particular to a combined valve.

Background

In the medium transportation scene, such as water pipe network, natural gas transportation, etc., a ball valve or gate valve for opening or cutting off medium circulation in a pipeline and a check valve for preventing medium backflow are generally required to be connected in series, and the space required for installing two valves is larger, and the two valves are difficult to install in the scene of smaller part of installation space, therefore, people reduce the installation space occupied by a valve body by welding and sealing the ball valve or gate valve and the check valve through designing a combined valve, but the check valve component of the combined valve is easy to damage, the whole combined valve needs to be detached after damage, the use is influenced, and the replacement cost is increased.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a combined valve.

The technical scheme provided by the utility model is as follows:

the utility model provides a combination valve, includes stop valve subassembly, check valve subassembly, the stop valve subassembly is used for opening or cutting off the medium circulation in the pipeline, the stop valve subassembly is equipped with entrance point and exit end, the check valve subassembly includes the check valve body, the check valve body is equipped with entrance point and exit chamber, entrance point and the exit end sealing connection of stop valve subassembly, be equipped with first check subassembly in the entrance point, be equipped with the second check subassembly in the exit chamber, be equipped with the valve gap on the check valve body, the valve gap can be dismantled through the bolt with the check valve body and be connected, be equipped with the axle bed in the check valve body, first check subassembly can be dismantled with the axle bed and be connected.

The stop valve assembly is a ball valve assembly and comprises a ball valve body, a ball valve rod, a ball body and a ball valve seat, wherein the ball valve seat is arranged in the ball valve body, the ball valve body is provided with an inlet end and an outlet end, and the ball body is arranged in the ball valve body and is connected with the ball valve rod.

The check valve is characterized in that a connecting pipe is arranged on the outer side of the check valve body and connected with the inlet cavity and the outlet cavity, and a pressure release valve is arranged on the connecting pipe.

The first check assembly comprises a first valve shaft, the first valve shaft is detachably connected with the shaft seat through a bolt, a first valve plate and a second valve plate are hinged to the first valve shaft, a torsion spring is sleeved on the first valve shaft, an upper torsion arm and a lower torsion arm of the torsion spring respectively abut against the first valve plate and the second valve plate, a first valve seat is arranged in the check valve body, the first valve plate and the second valve plate are provided with a rotating end close to the first valve shaft and an opening and closing end far away from the first valve shaft, and the first valve seat supports the opening and closing ends of the first valve plate and the second valve plate.

The second check assembly comprises a second valve shaft, the end part of the second valve shaft is connected with a valve clack, a shaft sleeve is arranged on the second valve shaft opposite to the valve clack side, two ends of the shaft sleeve are fixedly connected with the inner wall of the outlet cavity in an abutting mode, and a spring is arranged between the shaft sleeve and the valve clack.

The stop valve component is in sealing connection with the check valve component through welding.

The upper end of the valve cover is provided with a transparent window.

And the valve cover is provided with a hanging ring.

The utility model has the beneficial effects that: the utility model forms a combined valve by sealing and connecting the cut-off valve component and the check valve component, is applicable to the scene with smaller part of installation space, and is convenient to replace and beneficial to saving cost by arranging the shaft seat in the check valve body and arranging the first check component and the second check component, wherein the first check component is detachably connected with the shaft seat, and the second check component can perform temporary check action after the first check component is damaged, and the replacement of the first check component can be realized without detaching the whole combined valve after the valve cover at the upper end is opened.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional structure of an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

As shown in fig. 1-2, a combination valve comprises a stop valve assembly 21 and a check valve assembly 22, wherein the outlet end of the stop valve assembly 21 is in sealing connection with the inlet end of the check valve assembly 22 through welding, the inlet end of the combination valve is the inlet end of the stop valve assembly 21, and the outlet end is the outlet end of the check valve assembly 22.

In this embodiment, the cut-off valve assembly 21 is a ball valve assembly, and includes a ball valve body 28, a ball valve stem 31, a ball 30, and a ball valve seat 29, where the ball valve seat 29 is disposed in the ball valve body 28, the ball valve body 28 is provided with an inlet end 32 and an outlet end 33, the ball 30 is disposed in the ball valve body 28 and connected with the ball valve stem 31, the upper end of the ball valve stem 31 is connected with a handle, and the ball valve stem 31 is driven to rotate by rotating the handle, so as to drive the ball 30 to rotate, thereby realizing opening or cutting off medium circulation in a pipeline. The shutoff valve assembly 21 may be a functional valve having a function of shutting off the medium flow, such as a gate valve assembly.

The check valve assembly 22 comprises a check valve body 6, the check valve body 6 is provided with an inlet cavity 34 and an outlet cavity 35, the inlet cavity 34 is in sealing welding with an outlet end 33 of the stop valve assembly, a first check assembly 23 is arranged in the inlet cavity 34, a second check assembly 24 is arranged in the outlet cavity 34, a valve cover 25 is arranged on the check valve body 6, the valve cover 25 is detachably connected with the check valve body 6 through a bolt 9, and a shaft seat 7 is arranged in the check valve body 6.

The first check assembly 23 comprises a first valve shaft 2, the first valve shaft 2 and the shaft seat 7 can be quickly disassembled and assembled through bolts, a first valve plate 5 and a second valve plate 51 are hinged to the first valve shaft 2, a torsion spring 4 is sleeved on the first valve shaft 2, upper and lower torsion arms of the torsion spring 4 respectively abut against the first valve plate 5 and the second valve plate 51, preferably, two torsion springs can be sleeved on the first valve shaft 2, the upper and lower torsion arms of the two torsion springs respectively abut against the first valve plate 5 and the second valve plate 52, after one torsion spring fails, the check effect can still be achieved, the service life of the first check assembly 23 is prolonged, a first valve seat 41 is arranged in the check valve body 6, the first valve plate 5 and the second valve plate 51 are provided with a rotating end close to the first valve shaft 2 and an opening and closing end far away from the first valve shaft 2, and the first valve seat 41 supports the opening and closing ends of the first valve plate 5 and the second valve plate 5.

The second check assembly 24 comprises a second valve shaft 39, the end part of the second valve shaft 39 is connected with a valve clack 36, a shaft sleeve 38 is arranged on the second valve shaft 39 opposite to the valve clack 36, two ends of the shaft sleeve 38 are fixedly abutted against the inner wall of the outlet cavity 35, a spring 37 is arranged between the shaft sleeve 38 and the valve clack 36, a second valve seat 42 is arranged in the check valve body 6, the spring 37 is initially in a compressed state, and the valve clack 36 is abutted against the second valve seat 42 by the pressure of the spring 37.

In this embodiment, the outside of the check valve body 6 is provided with the adapter tube 27, the adapter tube 27 is connected with the inlet cavity 34 and the outlet cavity 35, the adapter tube 27 is provided with the pressure relief valve 26, the adapter tube 27 can play a role in balancing the left and right pressure of the pipeline, and when the first check component needs to be replaced, the pressure in the valve cavity can be relieved. Further, the upper end of the valve cover 25 is provided with a transparent window 40, so that the operation conditions of the first check assembly 23 and the second check assembly 24 in the check valve body 6 can be conveniently observed, and the problem can be found and replaced in time. Because the combination valve combines the stop valve assembly 21 and the check valve assembly 22 through welding, the overall weight is relatively large compared with the weight of a single valve, and the lifting ring 12 can be arranged on the valve cover 25 for auxiliary support.

The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.

Claims (8)

1. A combination valve, characterized by: including stop valve subassembly, check valve subassembly, the stop valve subassembly is used for opening or cutting off the medium circulation in the pipeline, the stop valve subassembly is equipped with entrance point and exit end, the check valve subassembly includes the check valve body, the check valve body is equipped with entrance point and exit chamber, entrance point and the exit end sealing connection of stop valve subassembly, be equipped with first check subassembly in the entrance point, be equipped with the second check subassembly in the exit chamber, be equipped with the valve gap on the check valve body, the valve gap can be dismantled through the bolt with the check valve body and be connected, be equipped with the axle bed in the check valve body, first check subassembly can be dismantled with the axle bed and be connected.

2. A combination valve as defined in claim 1, wherein: the stop valve assembly is a ball valve assembly and comprises a ball valve body, a ball valve rod, a ball body and a ball valve seat, wherein the ball valve seat is arranged in the ball valve body, the ball valve body is provided with an inlet end and an outlet end, and the ball body is arranged in the ball valve body and is connected with the ball valve rod.

3. A combination valve as defined in claim 1, wherein: the check valve is characterized in that a connecting pipe is arranged on the outer side of the check valve body and connected with the inlet cavity and the outlet cavity, and a pressure release valve is arranged on the connecting pipe.

4. A combination valve as defined in claim 1, wherein: the first check assembly comprises a first valve shaft, the first valve shaft is detachably connected with the shaft seat through a bolt, a first valve plate and a second valve plate are hinged to the first valve shaft, a torsion spring is sleeved on the first valve shaft, an upper torsion arm and a lower torsion arm of the torsion spring respectively abut against the first valve plate and the second valve plate, a first valve seat is arranged in the check valve body, the first valve plate and the second valve plate are provided with a rotating end close to the first valve shaft and an opening and closing end far away from the first valve shaft, and the first valve seat supports the opening and closing ends of the first valve plate and the second valve plate.

5. A combination valve as defined in claim 1, wherein: the second check assembly comprises a second valve shaft, the end part of the second valve shaft is connected with a valve clack, a shaft sleeve is arranged on the second valve shaft opposite to the valve clack side, two ends of the shaft sleeve are fixedly connected with the inner wall of the outlet cavity in an abutting mode, and a spring is arranged between the shaft sleeve and the valve clack.

6. A combination valve as defined in claim 1, wherein: the stop valve component is in sealing connection with the check valve component through welding.

7. A combination valve as defined in claim 1, wherein: the upper end of the valve cover is provided with a transparent window.

8. A combination valve as defined in claim 1, wherein: and the valve cover is provided with a hanging ring.