A double lock valve body connecting mechanism

Abstract

The application discloses a double-lock valve body connecting mechanism, which comprises an inlet pipe and a valve body, and the interface end A of the valve body is in internal sealing butt joint communication with the interface end of the inlet pipe. Since the pressure self-locking assembly can automatically realize the internal sealing butt joint communication between the interface end of the inlet pipe and the interface end A of the valve body, the problem that the fast connecting sealing device needs to be manually operated to seal and connect the connecting pipe and the overflow valve body from the outside is solved, and the operation danger and complexity of the sealing connection between the connecting pipe and the overflow valve body are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to a double-lock valve body connecting mechanism and belongs to the technical field of interface sealing connection. BACKGROUND

[0002] In industrial production or medical production and life, flammable, explosive or toxic high-risk fluid media are sometimes used. In order to efficiently and safely transport the high-risk fluid media, the high-risk fluid media need to be compressed into a specific transport storage tank for transportation. After being transported to a delivery point, the high-risk fluid media in the storage tank in a high-pressure state after being compressed are transferred to a storage device at the delivery point. When the high-risk fluid media in the high-pressure state are transferred, a pipeline interface of the transport storage tank is sealed and connected with a valve body of the storage device at the delivery point, so that the high-risk fluid media in the high-pressure state are safely transferred and stored.

[0003] A quick connection sealing device for an overflow valve is disclosed in Chinese Patent No. CN211231773U. The disclosed technology is that the compression block moves towards the overflow valve body, the compression block compresses the spring towards the overflow valve body, the spring is compressed to the point that it cannot be compressed any more, the clamping column is clamped with the clamping groove, and the sealing strip is tightly attached to the overflow valve body to seal the overflow valve body. The lock sleeve and the check ring seal the gap between the lock groove and the compression block. Although the quick connection sealing device can seal and connect the connection pipe and the overflow valve body to achieve the flow of the high-risk fluid media in the high-pressure state between the connection pipe and the overflow valve body, the quick connection sealing device needs to be manually operated to seal and connect the connection pipe and the overflow valve body from the outside, which has the problems of high operation risk and complicated operation. SUMMARY

[0004] To solve the above technical problems, the application provides a double-lock valve body connecting mechanism.

[0005] The application is achieved by the following technical solutions.

[0006] The double-lock valve body connecting mechanism provided by the application comprises:

[0007] an inlet pipe,

[0008] a valve body, an interface end A of the valve body is internally sealed and connected with an interface end of the inlet pipe.

[0009] The interface end of the inlet pipe is automatically internally sealed and connected with the interface end A of the valve body through a pressure self-locking assembly.

[0010] The pressure self-locking assembly comprises a lock groove ring fixedly installed at an interval from an inner surface of the interface end, and a lock groove edge and the inner surface of the interface end form a lock ring groove.

[0011] High-pressure locking block A is axially slidably installed in the locking ring groove, and the bottom of the high-pressure locking block A is conical;

[0012] High-pressure locking block B is radially slidably installed in the interface end, the inlet pipe of the interface end is provided with a through hole, the high-pressure locking block B is radially slidably installed in the through hole, the inner top surface of the high-pressure locking block B is conical, the high-pressure locking block B is in inclined surface contact with the high-pressure locking block A, the valve body of the interface end A is provided with a limiting groove for the high-pressure locking block B to tightly contact, and the high-pressure locking block A is pressed by high-pressure fluid medium to slide in the locking ring groove formed by the inner surface of the interface end, so that the high-pressure locking block B extends radially outward to tightly contact the inner surface of the limiting groove of the interface end A.

[0013] The pressure-locked self-locking assembly further comprises a reset member installed at the lower part of the high-pressure locking block A, and the reset member provides a reset force for the high-pressure locking block A to slide away from the high-pressure locking block B in the locking ring groove.

[0014] The interface end of the inlet pipe is axially provided with an annular liquid overflow temporary storage groove, and the top of the liquid overflow temporary storage groove is provided with an air inlet and an air outlet.

[0015] Further comprising a fixed shell installed outside the inlet pipe, and a power member is installed on the inlet pipe to provide moving power for the fixed shell, and the fixed shell seals and covers the inlet pipe and the valve body outside.

[0016] The outer part of the inlet pipe and the outer part of the valve body are provided with threads, the inner surface of the fixed shell is provided with threads, the power member is a miniature gear motor with a gear on the output shaft, the threads on the inner surface of the fixed shell are screw-connected and sealed with the threads on the outer part of the inlet pipe and the threads on the outer part of the valve body, and the gear and the threads on the inner surface of the fixed shell form a worm and gear structure.

[0017] The outer part of the inlet pipe is provided with a step for installing the power member, and the step and the fixed shell form an installation groove for installing the power member.

[0018] Further comprising a mechanical arm screw-fixedly installed with the inlet pipe, and the mechanical arm moves in position and space when the inlet pipe is butted against the valve body.

[0019] The beneficial effects of the present application are that the pressure-locked self-locking assembly can automatically realize the internal sealing butt joint of the interface end of the inlet pipe and the interface end A of the valve body, and solve the problems of high operation danger and complicated operation of the sealing connection of the connection pipe and the overflow valve body by manual operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present application;

[0021] Figure 2 is the schematic diagram of the main view section of the inlet pipe and the valve body connection of the present application;

[0022] Figure 3 is Figure 2 is the local enlarged schematic diagram of A in the figure;

[0023] In the figure: 1-inlet pipe; 11-fixed communication end; 12-interface end; 13-locking groove side; 14-high pressure locking block A; 15-high pressure locking block B; 16-resetting member; 17-overflow temporary storage groove; 18-air inlet; 19-air outlet; 2-valve body; 21-fixed communication end; 22-interface end A; 23-limiting groove; 3-fixed shell; 4-power member; 5-mechanical arm. DETAILED DESCRIPTION

[0024] The technical solutions of the present application are further described below, but the scope of protection is not limited to the description.

[0025] As Figures 1 to 3 shown.

[0026] A double-lock valve body connecting mechanism of the present application comprises:

[0027] The inlet pipe 1 is in communication with the fixed communication end 11 under normal conditions and a specific transport storage tank,

[0028] The valve body 2 is in communication with the fixed communication end 21 under normal conditions and a storage device at a unloading point, and the interface end A 22 of the valve body 2 is in communication with the interface end 12 of the inlet pipe 1.

[0029] The fixed shell 3 is installed on the outside of the inlet pipe 1 under normal conditions, the power member 4 is installed on the inlet pipe 1 to provide moving power for the fixed shell 3, and the fixed shell 3 covers the inlet pipe 1 and the outside of the valve body 2.

[0030] After the specific transport storage tank is transported to the unloading point, the interface end 12 of the inlet pipe 1 is in communication with the interface end A 22 of the valve body 2, the fixed shell 3 is automatically moved from the outside of the inlet pipe 1 to the outside of the valve body 2 by the power member 4, the fixed shell 3 covers the inlet pipe 1 and the outside of the valve body 2, the interface end 12 of the inlet pipe 1 is in airtight communication with the interface end A 22 of the valve body 2, and the interface end 12 of the inlet pipe 1 is in airtight communication with the interface end A 22 of the valve body 2. One tight locking, the high-risk fluid medium in the high-pressure state flows through the valve body 2 from the inlet pipe 1, since the inlet pipe 1 and the outside of the valve body 2 are both sealed and covered by the fixed shell 3, leakage of the high-risk fluid medium in the high-pressure state is avoided, even if leakage occurs, since the fixed shell 3 is automatically moved from the outside of the inlet pipe 1 to the outside of the valve body 2 by the power member 4, direct operation and contact by personnel is avoided, and the problem of personnel being in a high-risk environment inhaling dangerous fluid medium is solved.

[0031] The inlet pipe 1 and the valve body 2 are externally threaded; the inner surface of the fixed shell 3 is threaded; the power element 4 is a miniature gear motor with a gear on the output shaft; the threads on the inner surface of the fixed shell 3 are screwed and connected to the threads on the outer surface of the inlet pipe 1 and the valve body 2 to form a sealed cover, the gear and the threads on the inner surface of the fixed shell 3 form a worm gear structure, the miniature gear motor drives the gear on the output shaft to rotate, realizing the screwing and covering of the fixed shell 3 from the outer surface of the inlet pipe 1 to the outer surface of the valve body 2. The power element 4 can also be an electric telescopic rod, the telescopic end of the power element 4 is fixed to the fixed shell 3, and the telescopic movement of the power element 4 drives the fixed shell 3 to fit with the inlet pipe 1 and the valve body 2 to achieve sealed covering.

[0032] The outer surface of the inlet pipe 1 is provided with a step for installing the power element 4, and the step and the fixed shell 3 form an installation groove for installing the power element 4.

[0033] The inner surface of the interface end 12 of the inlet pipe 1 is integrally or weldedly fixedly provided with a locking groove ring 13, and the locking groove edge 13 and the inner surface of the interface end 12 form a locking ring groove; a high-pressure locking block A 14 is axially slidably installed in the locking ring groove, and the outer bottom of the high-pressure locking block A 14 is tapered; the inlet pipe 1 of the interface end 12 is provided with a through hole, and a high-pressure locking block B 15 is radially slidably installed in the through hole, and the inner top surface of the high-pressure locking block B 15 is tapered, so that the high-pressure locking block B 15 is in inclined surface contact with the high-pressure locking block A 14; the inner surface of the valve body 2 of the interface end A 22 is provided with a limiting groove 23 for the high-pressure locking block B 15 to extend out and tightly contact, and the locking groove edge 13, the high-pressure locking block A 14 and the high-pressure locking block B 15 form a pressure-locked self-locking assembly at the interface end 12 of the inlet pipe 1.

[0034] When the inlet pipe 1 inputs high-pressure high-risk fluid medium, the high-pressure high-risk fluid medium presses the high-pressure locking block A 14 to slide in the locking ring groove formed by the locking groove edge 13 and the inner surface of the interface end 12 towards the high-pressure locking block B 15, so that the high-pressure locking block B 15 extends out radially and tightly contacts with the inner surface of the limiting groove 23 of the interface end A 22, achieving that the interface end 12 of the inlet pipe 1 is automatically connected and communicated with the interface end A 22 of the valve body 2 from the inside through the pressure-locked self-locking assembly, realizing that the interface end 12 of the inlet pipe 1 is tightly locked with the interface end A 22 of the valve body 2 at another place. Since the pressure-locked self-locking assembly can automatically realize that the interface end 12 of the inlet pipe 1 is connected and communicated with the interface end A 22 of the valve body 2 from the inside, the problem of high risk and complicated operation of sealing and connecting the connecting pipe and the overflow valve body from the outside is solved. The double-lock valve body connection formed by the two tight locks effectively improves the reliability of the sealed connection and effectively resists the axial load and the radial load.

[0035] The high-pressure locking block A14 and the high-pressure locking block B15 can be made of elastic rubber and can be elastically deformed under pressure, or can be made of steel and can not be elastically deformed under pressure.

[0036] The pressure-locked self-locking assembly further comprises a reset member 16 installed at the lower part of the high-pressure locking block A14. When the high-pressure locking block A14 is not in a high-pressure state, the reset member 16 provides a reset force for the sliding of the high-pressure locking block A14 away from the high-pressure locking block B15 in the locking ring groove. The reset force provided by the reset member 16 cannot make the high-pressure locking block A14 disengage from the locking ring groove. The reset member 16 can be an elastic rubber block, an elastic member, or a spring. When the high-pressure locking block A14 makes the high-pressure locking block B15 completely extend radially and tightly contact the inner surface of the limiting groove 23, the spring is in the maximum compression state. When the high-pressure locking block A14 is no longer in contact with the high-pressure locking block B15, the spring is in the minimum compression state and does not generate elastic force.

[0037] The interface end 12 of the inlet pipe 1 is provided with an annular overflow temporary storage groove 17 in the axial direction. The top of the overflow temporary storage groove 17 is provided with an air inlet 18 and an air outlet 19. The interface end 12 of the inlet pipe 1 is a conical surface. When the internal pressure of the unloading point storage device connected with the fixed communication end 21 increases, the high-pressure high-risk fluid medium pushes the inlet pipe 1 of the interface end 12 to move away from the valve body 2 in the axial direction to generate a gap. The leaked overflow of the high-pressure high-risk fluid medium is temporarily stored in the overflow temporary storage groove 17 through the limiting groove 23. The leaked overflow in the overflow temporary storage groove 17 is discharged from the air outlet 19 to a designated safe container through the air inlet 18 filled with air, thereby avoiding the overflow of the leaked gas.

[0038] The air inlet 18 and the air outlet 19 can be provided with an inductive pressure gauge and other early warning devices. Once the air inlet 18 and the air outlet 19 overflow, the early warning device generates a warning. At this time, the high-pressure high-risk fluid medium in the inlet pipe 1 can be quickly cut off and stopped to avoid the overflow of the leaked high-risk gas.

[0039] The mechanical arm 5 is rotatably and fixedly installed with the inlet pipe 1. The mechanical arm 5 moves in position and space when the inlet pipe 1 is connected with the valve body 2, or the inlet pipe 1 on the mechanical arm 5 is replaced to realize the automatic closed connection with the corresponding valve body 2.

Claims

1. A double-lock valve body connection mechanism, characterized in that, include: Inlet pipe (1), The valve body (2) has its interface end A (22) connected to the interface end (12) of the inlet pipe (1) in a sealed manner from the inside. The interface end (12) of the inlet pipe (1) is automatically and sealedly connected to the interface end A (22) of the valve body (2) via a pressure-locked self-locking component; The pressure-receiving self-locking component includes: a locking groove edge (13) fixedly installed at a distance from the inner surface of the interface end (12), the locking groove edge (13) and the inner surface of the interface end (12) forming a locking ring groove; A high-pressure locking block A(14) can be axially slidably installed in the locking ring groove, and the bottom of the outer side of the high-pressure locking block A(14) is conical; A high-pressure locking block B (15) can be radially slidably installed on the interface end (12). The interface end (12) is provided with a through hole. The high-pressure locking block B (15) can be radially slidably installed in the through hole. The inner surface of the top of the high-pressure locking block B (15) is conical, so that the high-pressure locking block B (15) and the high-pressure locking block A (14) make contact with each other. The inner surface of the interface end A (22) is provided with a limiting groove (23) for the high-pressure locking block B (15) to extend and make close contact. The high-pressure high-risk fluid medium presses the high-pressure locking block A (14) to slide into the high-pressure locking block B (15) in the locking ring groove formed by the locking groove edge (13) and the inner surface of the interface end (12), so that the high-pressure locking block B (15) extends radially outward and makes a sealed contact with the inner surface of the limiting groove (23) of the interface end A (22); The pressure-receiving self-locking assembly also includes a reset member (16) installed at the lower part of the high-pressure locking block A (14), the reset member (16) providing a reset force for the high-pressure locking block A (14) to slide away from the high-pressure locking block B (15) in the locking ring groove; The inlet pipe (1) has an annular overflow storage groove (17) axially positioned at the interface end (12); The top of the overflow storage tank (17) is provided with an air inlet (18) and an exhaust outlet (19) at intervals; High-pressure high-risk fluid medium pushes against the interface end (12) and retreats axially away from the valve body (2) to create a gap. The high-pressure high-risk fluid medium leaks and overflows through the limiting groove (23) and is temporarily stored in the overflow storage tank (17). The air inlet (18) is filled with atmosphere and the leaked overflow in the overflow storage tank (17) is discharged from the exhaust port (19) to the designated safety container. The air inlet (18) and the exhaust outlet (19) are equipped with pressure gauges to form an early warning device. Once the air inlet (18) and the exhaust outlet (19) overflow, the early warning device will generate an early warning.

2. The double-lock valve body connection mechanism as described in claim 1, characterized in that: It also includes a fixed housing (3) installed on the outside of the inlet pipe (1), and a power component (4) installed on the inlet pipe (1) to provide moving power to the fixed housing (3). The fixed housing (3) seals and covers the outside of the inlet pipe (1) and the valve body (2).

3. The double-lock valve body connection mechanism as described in claim 2, characterized in that: The inlet pipe (1) and valve body (2) are threaded on the outside; the fixed shell (3) is threaded on the inside; the power component (4) is a miniature gear motor with a gear on the output shaft; the thread on the inside of the fixed shell (3) is screwed into the thread on the outside of the inlet pipe (1) and the thread on the outside of the valve body (2) for sealing and covering, and the gear and the thread on the inside of the fixed shell (3) form a worm gear structure.

4. The double-lock valve body connection mechanism as described in claim 3, characterized in that: The inlet pipe (1) is provided with a step for installing the power component (4) on the outside. The step and the fixed shell (3) form an installation groove for the power component (4) to be installed.

5. The double-lock valve body connection mechanism as described in claim 1, characterized in that: It also includes a robotic arm (5) that is screwed and fixedly installed with the inlet pipe (1). The robotic arm (5) moves the inlet pipe (1) in position and space when the inlet pipe (1) is connected to the valve body (2).

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