A connecting valve body and a connecting valve body joint

Abstract

The application discloses a zero-leakage gas-liquid pipeline connecting valve body and a quick assembly and disassembly connecting valve body joint, which comprises a left valve body, a left valve core movably arranged in the left valve body, and a left gas passage through hole arranged on the left valve body; a right valve body, a right valve core movably arranged in the right valve body, and a right gas passage through hole arranged on the right valve body; a first gas passage communication hole and a second gas passage communication hole are arranged on the right valve core, and the first gas passage communication hole and the second gas passage communication hole are communicated through an intermediate gas passage communication hole; the left valve body is coaxially abutted against the right valve body, the right valve core can move to the inside of the left valve body along a coaxial axis, and the left valve core can move to the inside of the right valve body along the coaxial axis; the first gas passage communication hole can be communicated with the left gas passage through hole or the right gas passage through hole; when the first gas passage communication hole is communicated with the left gas passage through hole, the second gas passage communication hole is communicated with the right gas passage through hole. By arranging the valve body on the joint and by the valve body structure, the connecting space is eliminated, so that after the two sides are connected, the residual gas-liquid in the connecting space is guided into the related gas passage through the change of the gas passage of the valve body, and the natural release of the residual gas-liquid is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of valve body, especially relates to a zero-leakage gas-liquid pipeline connecting valve body and quick-mounting and dismounting connecting valve body joint. BACKGROUND

[0002] In the fields of chemical industry, physical test and nuclear power, the transmission and sampling of various leakage-proof gas, harmful gas and liquid, including the sub-packaging of toxic gas and liquid in chemical industry, the detection and sampling of radioactive gas in nuclear reactor, require the gas transmission connection and disconnection of pipeline and container. Generally, there is always a space between the connection of pipeline valve and container valve. After the transmission of pipeline and container is completed, the valves of both sides are closed, and the connection space always has residual gas and liquid which is naturally released, and most of them are pressure gas. Therefore, the harmful gas is released according to the volume of superatmospheric pressure multiple.

[0003] Therefore, the personnel in the operation process must take certain protective measures, otherwise it will cause certain harm to the personnel and surrounding facilities. The protective measures will increase the operation cost, time and inconvenience.

[0004] The existing connecting joint cannot guide the residual gas and liquid in the connection space before separating the connection of both sides, and cannot effectively eliminate the residual gas and liquid in the connection space. SUMMARY

[0005] The technical problem to be solved by the present application is that by setting a valve body on the joint and changing the gas path of the valve body, the connection space is eliminated, so that the residual gas and liquid in the connection space after separating the connection of both sides is guided into the related gas duct, and the natural release of residual gas and liquid is avoided.

[0006] The technical scheme of the present application to solve the above problems is to provide

[0007] A connecting valve body, comprising,

[0008] A left valve body, a left valve core is movably arranged in the left valve body, and a left gas path through hole is arranged on the left valve body;

[0009] A right valve body, a right valve core is movably arranged in the right valve body, and a right gas path through hole is arranged on the right valve body; the right valve core is provided with a first gas path communication hole and a second gas path communication hole, and the first gas path communication hole and the second gas path communication hole are communicated through an intermediate gas path communication hole;

[0010] The left valve body and the right valve body are coaxially abutted, the right valve core can move inside the left valve body along the coaxial axis, and the left valve core can move inside the right valve body along the coaxial axis; the first gas path communication hole can be communicated with the left gas path through hole or the right gas path through hole; when the first gas path communication hole is communicated with the left gas path through hole, the second gas path communication hole is communicated with the right gas path through hole.

[0011] Further, the left valve body is internally provided with at least one group, i.e. two left ring grooves for installing rubber O-rings, and the right valve body is internally provided with at least one group, i.e. two right ring grooves for installing rubber O-rings.

[0012] Further, the two left ring grooves are provided with a left gas path ring groove therebetween, and the left gas path through hole is radially provided on the left gas path ring groove; the two right ring grooves are provided with a right gas path ring groove therebetween, and the right gas path through hole is radially provided on the right gas path ring groove.

[0013] Further, the left valve body is internally provided with an inner hole for accommodating the left valve core, and the inner hole is a stepped hole; the left end of the left valve core is provided with a blind hole for installing a spring, and a spring is arranged between the blind hole and the left end of the left valve body; the outer circle part of the left end of the left valve core is provided with a retainer groove, and a limit ring is arranged in the retainer groove, the limit ring cooperates with the step of the stepped hole to limit the moving distance of the left valve core to the right.

[0014] Meanwhile, a connecting valve body joint comprising the above valve body structure is provided, which comprises,

[0015] A left valve body shell is fixedly sleeved on the left valve body, and the left valve body shell is provided with a left valve body shell air inlet hole communicated with the left gas path through hole;

[0016] A right valve body shell is fixedly sleeved on the right valve body, and the right valve body shell is provided with a right valve body shell air inlet hole communicated with the right gas path through hole;

[0017] A left-right valve body connecting and fixing mechanism is used for abutting and fixing the left and right valve bodies together;

[0018] A right valve core pushing mechanism is used for pushing the right valve core to move inside the left valve body.

[0019] Further, the fixing mechanism comprises

[0020] A U-shaped hanger;

[0021] A hinged short shaft is used for hingedly connecting the U-shaped hanger and the right valve body shell;

[0022] Locking bolt, which is arranged at one end of the U-shaped hanger, and pushes the left valve body and the right valve to abut together.

[0023] Further, the right valve core pushing mechanism comprises

[0024] Bolt hand wheel

[0025] Double nut cover, which is arranged at the rightmost end of the right valve body, and the bolt hand wheel and the double nut cover cooperate to rotate and push the right valve to move into the left valve body.

[0026] Further, the left valve body rear cover comprises

[0027] Left valve body rear cover, which is arranged at the leftmost end of the left valve body.

[0028] Further, the outer end surface of the left valve body rear cover is arranged as a spherical concave.

[0029] Further, the end of the locking bolt is arranged as a spherical convex which cooperates with the spherical concave.

[0030] The present application has the following beneficial effects: the space is replaced by the valve core pushing mechanism, the connecting space is eliminated, the gas communication between the two ends is realized, and the gas and liquid are transported from the high-pressure end to the low-pressure end; after the work is completed, the valve cores of the left and right sides are reset, and after being unlocked, the components are separated and independent, and no gas and liquid overflow during operation. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The cross-sectional view of the separation preparation state of the left and right valve bodies and the valve core of the embodiment of the present application;

[0032] Figure 2 The cross-sectional view of the insertion and locking state of the left and right valve bodies and the valve core of the embodiment of the present application;

[0033] Figure 3 The cross-sectional view of the gas communication state of the left and right valve bodies and the valve core of the embodiment of the present application;

[0034] Figure 4 The external appearance schematic diagram of the separation preparation state of one embodiment of the present application;

[0035] Figure 5 The 1 / 4 cross-sectional schematic diagram of the gas communication state of one embodiment of the present application;

[0036] Figure 6 The cross-sectional schematic diagram of the separation state of the two valve bodies of one embodiment of the present application;

[0037] Figure 7 The cross-sectional schematic diagram of the just-inserted cooperation state of the two valve bodies of one embodiment of the present application;

[0038] Figure 8 The locking state cross-sectional view of two valve bodies of one embodiment of the present application;

[0039] Figure 9 The gas communication state cross-sectional view of two valve bodies of one embodiment of the present application;

[0040] Wherein, the left valve core 1; the left valve body 2; the left gas path annular groove 2.1; the left gas path through hole 2.2; the left valve body balance gas hole 2.9; the limiting ring 3; the spring 4, the first rubber O-shaped ring 5, 6; the left and right valve body end face pressure flat end face sealing O-shaped ring 7; the right valve body 10; the right gas path annular groove 10.1; the right gas path through hole 10.2; the right valve core 11; the gas path through hole 11.1, 11.4; the gas path communication hole 11.3; the plug screw 12; the second rubber O-shaped ring 13, 14; the left valve body shell 20; the left valve body shell middle cavity 20.1; the left valve body shell air inlet hole 20.2; the first sealing O-shaped ring 21; the second sealing O-shaped ring 22; the rear cover sealing O-shaped ring 23; the right valve core connecting pin 25; the right valve body shell 30; the right valve body shell middle cavity 30.1; the 31 double nut cover 31; the bolt hand wheel 32; the U-shaped hanger 33; the short shaft 34; the locking bolt 35; the locking bolt spherical convex 35.1; the left valve body rear cover 36; the spherical concave 36.1; the right valve body gas path pipeline 37; the left valve body gas path pipeline 38. DETAILED DESCRIPTION

[0041] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0042] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units need not be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0043] Embodiment 1

[0044] AsFigures 1-3 As shown, a plug-in valve body includes a left valve body 2 and a right valve body 10.

[0045] The left valve body 2 is provided with a left valve core 1. The left end of the left valve core 1 has a blind hole for installing the spring 4. The left end of the left valve core 1 also has a limiting ring 3 that is larger than the standard diameter. The limiting ring 3 is an open retaining ring that fits in the retaining ring groove at the left end of the left valve core 1. The right end of the left valve core is a plane perpendicular to the valve core cylinder.

[0046] The inner hole of the left valve body 2 is a stepped hole, with the larger stepped hole on the left side. The diameter of the hole is approximately larger than the outer diameter of the limiting ring 3 on the left valve core 1, which is used to limit the rightward movement of the left valve core 1 to a distance exceeding the right end of the left valve body 2. The smaller stepped hole on the right side of the left valve body is of standard diameter. The right section of the smaller stepped hole of the left valve body is provided with at least one set, namely two, annular grooves for installing the first rubber O-rings 5 ​​and 6. The annular groove of the O-ring is also provided with a left air passage annular groove 2.1 in the middle. The connection between the left air passage annular groove 2.1 and the smaller stepped hole is an R transition. The left air passage annular groove has a radial left air passage through hole 2.2. The outer circle of the right end of the left valve body 2 has a step larger than the outer circle. There is also an annular groove on the right end face of the left valve body 2 for installing the end face sealing O-ring 7.

[0047] like Figures 1-3 As shown, the right valve body 10 has a right valve core 11 inside. The left end of the right valve core 11 is a plane perpendicular to the cylinder of the valve core. The right valve core 11 has a gas passage connection hole 11.3 in the middle. Gas passage holes 11.1 and 11.4 are provided radially perpendicular to the gas passage connection hole 11.3, which radially penetrate the cylindrical surface of the right valve core 11. The right end of the gas passage connection hole 11.3 of the right valve core 11 has a plug screw 12 for sealing the gas passage connection hole 11.3. The right valve core 11 is slidably fitted within the standard diameter inner hole of the right valve body 10. At least one set of two annular grooves for installing the second rubber O-rings 13 and 14 are provided on the left end of the standard diameter inner hole of the right valve body 10. A right air passage annular groove 10.1 is also provided in the middle of the annular grooves of the O-rings 13 and 14. The connection between the right air passage annular groove 10.1 and the standard diameter inner hole is an R transition. A right air passage through hole 10.2 is radially provided on the right air passage annular groove 10.1. There is a step larger than the outer circle on the left end of the right valve body 10.

[0048] To ensure the gas pressure balance inside the connecting valve, such as Figures 8-9 As shown, the left valve body 2 has an additional left valve body balance vent 2.9. The bolt handwheel 32 needs to overcome both gas pressure and spring force to push the left valve core.

[0049] In Examples 1-2, during connection, the left valve core 1 and the right valve body 10 abut together (see...). Figure 2) let left valve core and right valve body standard hole alignment insert center, through the left valve core 2 standard caliber inside the left valve core outside cylinder insert right valve body 10 standard caliber inside the left and right valve body 2, 10 centering positioning and left valve body 2 right end and right valve body 10 left end face compression fixed complete locking, left and right valve body end face compression flat end face seal O ring 7, left valve core 1 in spring 4 top force makes left valve core 1 right end plane and right valve core 11 left end plane limited by external parts just flat, at this time, left and right two end gas path each other. Figure 3 ) let external parts push right valve core 11 to left, right valve core 11 left end face push left valve core 1 right end face, let two valve cores overcome spring 4 top force to left synchronous movement to right valve core 11 on the gas path through hole 11.1 to left valve body 2 on the left gas path ring groove 2.1 position after limit stop. At this time, the left high pressure gas through left valve body 2 on the left gas path through hole 2.2, left gas path ring groove 2.1 and right valve core 11 on the gas path through hole 11.1, gas path through hole 11.3, gas path through hole 11.4 and right valve body 10 on the right gas path ring groove 10.1 and right valve body 10 on the right gas path through hole 10.2 all connected to the right transmission. At this time, the left and right valve body and valve core are in gas communication state.

[0050] After the completion of the air supply work, the left and right valves are separated and closed. The reverse operation is performed, i.e. the external part is moved to the right, the left valve core 1 is tightly attached to the right valve core 11 and moved to the right under the top force of the spring 4 and the gas pressure, until the limit ring 3 on the left valve core 1 is on the large step plane (see Figure 2 ) At this time, the left and right valve bodies and their respective valve cores have completed the complete closing of the respective gas and liquid, and the external part is unlocked, i.e. the pressure on the left and right valve body end faces is removed, so that the left and right valve bodies are separated and independent (see Figure 1 ).

[0051] Example 2

[0052] As shown in Figures 4-9 , a valve body joint includes a left valve body 2 and a right valve body 10,

[0053] The left valve body 2 is internally provided with a left valve core 1, the left end of the left valve core 1 has a blind hole for installing a spring 4, and the left end of the left valve core 1 also has a limit ring 3 larger than the standard caliber, the limit ring 3 is an open check ring, which is sleeved in the check ring groove at the left end of the left valve core 1, and the right end of the left valve core is a plane perpendicular to the valve core cylinder;

[0054] The inner hole of the left valve body 2 is a stepped hole, with the larger stepped hole on the left side. The diameter of the hole is approximately larger than the outer diameter of the limiting ring 3 on the left valve core 1, which is used to limit the rightward movement of the left valve core 1 to a distance exceeding the right end of the left valve body 2. The smaller stepped hole on the right side of the left valve body is of standard diameter. The right section of the smaller stepped hole of the left valve body is provided with at least one set, namely two, annular grooves for installing the first rubber O-rings 5 ​​and 6. The annular groove of the O-ring is also provided with a left air passage annular groove 2.1 in the middle. The connection between the left air passage annular groove 2.1 and the smaller stepped hole is an R transition. The left air passage annular groove has a radial left air passage through hole 2.2. The outer circle of the right end of the left valve body 2 has a step larger than the outer circle. There is also an annular groove on the right end face of the left valve body 2 for installing the end face sealing O-ring 7.

[0055] A left valve body shell 20 is fixedly sleeved on the outside of the left valve body 2. A left valve body shell cavity 20.1 is located between the left valve body shell 20 and the left valve body 2. The left valve body shell 20 is provided with a left valve body shell air inlet 20.2, which communicates with the left air passage 2.2 via the left valve body shell cavity 20.1. The left valve body air passage 38 is connected to the left valve body shell air inlet 20.2.

[0056] like Figures 1-3 As shown, the right valve body 10 has a right valve core 11 inside. The left end of the right valve core 11 is a plane perpendicular to the cylinder of the valve core. The right valve core 11 has a gas passage connection hole 11.3 in the middle. Gas passage holes 11.1 and 11.4 are provided radially perpendicular to the gas passage connection hole 11.3, which radially penetrate the cylindrical surface of the right valve core 11. The right end of the gas passage connection hole 11.3 of the right valve core 11 has a plug screw 12 for sealing the gas passage connection hole 11.3. The right valve core 11 is slidably fitted within the standard diameter inner hole of the right valve body 10. At least one set of two annular grooves for installing the second rubber O-rings 13 and 14 are provided on the left end of the standard diameter inner hole of the right valve body 10. A right air passage annular groove 10.1 is also provided in the middle of the annular grooves of the O-rings 13 and 14. The connection between the right air passage annular groove 10.1 and the standard diameter inner hole is an R transition. A right air passage through hole 10.2 is radially provided on the right air passage annular groove 10.1. There is a step larger than the outer circle on the left end of the right valve body 10.

[0057] A right valve body shell 30 is fixedly sleeved on the outside of the right valve body 10. A right valve body shell cavity 30.1 exists between the right valve body shell 30 and the right valve body 10. The left valve body shell 20 is provided with a right valve body shell air inlet 20.2, which connects to the right air passage 10.2. The right valve body air passage 37 is connected to the right valve body shell air inlet 20.2.

[0058] The valve body joint further comprises a left-right valve body connecting and fixing mechanism, which is used for abutting and fixing the left and right valve bodies together. The fixing mechanism comprises a U-shaped hanger 33 and an articulated short shaft 34. The U-shaped hanger 33 is hinged to the right valve body shell 30 through the articulated short shaft 34. The movable end of the U-shaped hanger 33 is provided with a locking bolt 35. The end of the left valve body 2 is provided with a left valve body rear cover 36.1. A first sealing O-ring 21 is arranged between the left valve body 2 and the left valve body rear cover 36.1. The outer end surface of the left valve body rear cover 36.1 is provided with a spherical concave 36.1. The locking bolt 35 is further provided with a spherical convex 35.1 matched with the spherical concave.

[0059] The end of the right valve body 10 is provided with a double nut cover 31. A second sealing O-ring 22 is arranged between the right valve body 10 and the double nut cover 31. A bolt hand wheel 32 is matched with the double nut cover 31 to rotate and push the right valve core synchronously and move it towards the left valve body.

[0060] Those skilled in the art will understand that the embodiments described herein are intended to help the reader understand the principles of the present application and should be understood as not limiting the scope of protection of the present application to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations according to the technical inspiration disclosed in the present application without departing from the essence of the present application, and these modifications and combinations are still within the scope of protection of the present application.

Claims

1. A connecting valve body, characterized in that: include, The left valve body has a left valve core that is movably disposed inside it, and a left air passage hole is provided on the left valve body. The right valve body has a right valve core that is movably disposed inside it, and a right air passage hole is provided on the right valve body; the right valve core has a first air passage connecting hole and a second air passage connecting hole, and the first air passage connecting hole and the second air passage connecting hole are connected by an intermediate air passage connecting hole. The left valve body and the right valve body are coaxially abutted together. The right valve core can move along the axis into the left valve body, and the left valve core can move along the axis into the right valve body. The first air passage connection hole can be connected to the left air passage connection hole or the right air passage connection hole. When the first air passage connection hole is connected to the left air passage connection hole, the second air passage connection hole is connected to the right air passage connection hole.

2. A connecting valve body according to claim 1, characterized in that: The left valve body has two left annular grooves for installing rubber O-rings, and the right valve body has two right annular grooves for installing rubber O-rings.

3. A connecting valve body according to claim 2, characterized in that: A left air passage annular groove is provided between the two left annular grooves, and the left air passage annular groove is radially connected to the left air passage through hole; a right air passage annular groove is provided between the two right annular grooves, and the right air passage annular groove is radially connected to the right air passage through hole.

4. A connecting valve body according to any one of claims 1 or 3, characterized in that: The left valve body has an inner hole for accommodating the left valve core, and the inner hole is a stepped hole; the left end of the left valve core has a blind hole for installing a spring, and a spring is provided between the blind hole and the left end of the left valve body; the outer circle of the left end of the left valve core has a retaining ring groove, and a limit ring is provided in the retaining ring groove. The limit ring cooperates with the step of the stepped hole to limit the distance the left valve core can move to the right.

5. A valve body connector, characterized in that: Includes the connecting valve body as described in claims 1-4; further includes, A left valve body housing is fixedly sleeved on the left valve body. The left valve body housing is provided with a left valve body housing air inlet, which is connected to the left air passage hole. The right valve body housing is fixedly sleeved on the right valve body. The right valve body housing is provided with a right valve body housing air inlet, which is connected to the right air passage hole. A fixing mechanism is provided for abutting and fixing the left valve body and the right valve body together; A right valve core pushing mechanism is used to push the right valve core into the left valve body.

6. The connecting valve body connector according to claim 5, characterized in that: The fixing mechanism includes: U-shaped hanging rack; A hinged short shaft is provided, and the U-shaped bracket is hinged to the right valve body housing via the hinged short shaft. A locking bolt is located at one movable end of the U-shaped bracket, and the locking bolt pushes the left valve body and the right valve body to abut together.

7. The connecting valve body connector according to claim 5, characterized in that: The right valve core actuation mechanism includes: Bolt handwheel, A double nut cover is provided at the rightmost end of the right valve body. The bolt handwheel cooperates with the double nut cover to push the right valve core into the left valve body.

8. The connecting valve body connector according to claim 6, characterized in that: include Left valve body rear cover, the left valve body rear cover is located at the leftmost end of the left valve body.

9. The connecting valve body connector according to claim 8, characterized in that: The outer end face of the left valve body rear cover is set as a spherical concave surface.

10. The connecting valve body connector according to claim 9, characterized in that: The end of the locking bolt is configured as a spherical convex surface that mates with the concave spherical surface.

Images