Integrated gas self-closing valve and method of assembly thereof

Abstract

The application discloses an integrated gas self-closing valve and an assembling method thereof, and relates to the technical field of gas valve equipment, which comprises a self-closing valve body and a ball valve. The ball valve is arranged in a valve body at one end of the self-closing valve body, and the end of the valve body is used for connecting a gas pipeline. The ball valve comprises: a valve ball arranged in the valve body and rotationally connected with the valve body; a valve rod, one end of the valve rod is engaged with the valve ball, and the other end of the valve rod penetrates to the outside of the valve body and is connected with a handle; valve ball sealing pads are arranged on both sides of the valve ball in the axial direction of the valve body; an inner thread is arranged on the valve body close to the end, and the inner thread is connected with a valve ball plug; and the valve ball plug compresses a valve ball sealing ring. The valve ball plug is located in the valve body, so that when the gas self-closing valve is actually connected with the gas pipeline, only one easy-leakage point is formed at the connection position of the valve body and the gas pipeline, and the sealing performance is good. The ball valve structure in the self-closing valve can be quickly installed through the first installation tool and the second installation tool, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas valve equipment, in particular to an integrated gas self-closing valve and an assembling method thereof. BACKGROUND

[0002] The self-closing valve is used for the pipeline gas valve and is installed on the low-pressure gas system pipeline to ensure the safety of the gas pipeline. The gas self-closing valves on the market all have a ball valve structure. If the ball valve structure and the self-closing valve body are designed in a split structure, the self-closing valve will inevitably have multiple gas leakage points, and the split design will cause the overall structure of the gas valve to be relatively long. At present, the ball valve structure and the self-closing valve body are integrated into an integrated structure.

[0003] Application No. CN207297915U discloses an improved pipeline gas self-closing valve, which comprises a valve body and a gas outlet ball valve device. The gas outlet ball valve device comprises a ball valve gas outlet nozzle, one end of which is threadedly connected to the end of the valve body through sealing glue, and the other end is used for connecting with the gas pipeline. However, this structure still has two easy leakage points, which are the first easy leakage point between the ball valve gas outlet nozzle and the end of the valve body, and the second easy leakage point between the other end of the ball valve gas outlet nozzle and the end of the gas pipeline.

[0004] Application No. CN218523080U discloses a multifunctional self-closing valve, which connects a valve cover through the end of the valve body. The valve cover structure is used for connecting with the corresponding gas pipeline. Therefore, this scheme also has two easy leakage points, and has a large leakage risk.

[0005] In addition, in the integrated structure of the existing self-closing valve and the ball valve, the valve rod in the ball valve structure is mostly put into the valve body, and the valve rod is made to pass through the shaft hole through constant shaking, and handles, nuts and other structures are installed. For the valve ball structure, it needs to cooperate with the valve rod. Under the condition of accurate positioning, the installation and cooperation of the two are difficult. The installation of the sealing ring, gasket and other structures is also not convenient. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the present application is to provide an integrated gas self-closing valve and an assembling method thereof. The valve ball plug is arranged in the valve body, so that when the gas self-closing valve is actually connected with the gas pipeline, only one easy leakage point exists at the connection between the valve body and the gas pipeline, and the sealing performance is good. The first installation tool and the second installation tool can be used to quickly install the ball valve structure in the self-closing valve, thereby improving the installation efficiency.

[0007] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0008] The first aspect is an integrated gas self-closing valve, comprising a self-closing valve body and a ball valve, the ball valve is arranged in a valve body at one end of the self-closing valve body, and the end of the valve body is used for connecting a gas pipeline, the ball valve comprises:

[0009] a valve ball arranged in the valve body and rotationally connected with the valve body;

[0010] a valve rod, one end of the valve rod is engaged with the valve ball, and the other end of the valve rod penetrates to the outside of the valve body and is connected with a handle;

[0011] two valve ball sealing gaskets are arranged on both sides of the valve ball in the axial direction of the valve body, an inner thread is arranged on the end of the valve body close to the valve body, a valve ball plug is connected with the valve ball, and the valve ball plug compresses a valve ball sealing ring.

[0012] As a further implementation manner, a sealing ring is arranged between the valve rod and the valve body, and the handle is fixedly connected with the valve rod through a nut.

[0013] As a further implementation manner, one of the valve ball sealing gaskets is arranged between the valve ball and a boss of the valve body, and the other valve ball sealing gasket is arranged between the valve ball plug and the valve ball.

[0014] As a further implementation manner, the valve ball plug is a hollow polygonal structure at a middle position of the valve ball plug, and a clamping groove is arranged on the valve ball and used for clamping the valve rod.

[0015] The second aspect is an assembly method of the integrated gas self-closing valve, comprising the following steps:

[0016] a first valve ball sealing gasket is sleeved on a first installation tool, and the first installation tool is inserted into the inside of the valve body to realize installation of the valve ball sealing gasket;

[0017] the valve rod is clamped on a limiting end head at the end of a second installation tool, the second installation tool is inserted into an axial hole in the inside of the valve body, and one end of the valve rod penetrates through the axial hole;

[0018] the handle and a threaded hole at the top end of the valve rod are connected through a nut to fix the position of the valve rod;

[0019] a valve ball plug, a second valve ball sealing gasket and the valve ball are sequentially sleeved on the first installation tool, the valve ball plug is clamped with the first installation tool, the second valve ball sealing gasket and the valve ball are rotationally matched with the first installation tool, then the first installation tool is inserted into the inside of the valve body, the first installation tool is rotated, the valve ball plug is matched with an inner thread arranged on the end of the valve body close to the valve body, and the second valve ball sealing gasket is compressed;

[0020] the first installation tool is withdrawn, and finally the integrated gas self-closing valve is formed.

[0021] As a further implementation manner, the first installation tool comprises a handle, a matching rod and a matching shaft connected in sequence, the matching rod has a larger outer diameter than the matching shaft, so that a step is formed at the connection between the matching rod and the matching shaft, the first valve ball sealing gasket is sleeved on the matching shaft and abuts against the step during installation, and the first valve ball sealing gasket is pushed into the interior of the valve body by the handle and is clamped at the boss of the valve body.

[0022] As a further implementation manner, the second installation tool comprises a supporting rod, one end of the supporting rod is connected with a limiting end, the limiting end is provided with a limiting groove for clamping the valve rod, the valve rod is driven into the interior of the valve body by the supporting rod, and the supporting rod is lifted to make the top end of the valve rod pass through the shaft hole on the valve body.

[0023] As a further implementation manner, the nut is screwed with the valve rod through the handle, a gasket is arranged between the nut and the handle, the valve rod is fixed in place by screwing the nut and relying on the stretching force of the nut.

[0024] As a further implementation manner, the cross section of the matching rod is a polygonic structure same as the center position of the valve ball plug, so that the matching rod and the valve ball plug are clamped.

[0025] As a further implementation manner, the valve ball plug is sleeved on the matching rod, the second valve ball sealing gasket and the valve ball are sleeved on the matching shaft, the first installation tool is inserted into the valve body by the handle, the clamping groove on the valve ball is clamped with the end of the valve rod, then the handle is rotated, the valve ball plug is matched with the internal thread of the valve body, the handle is continuously rotated until the valve ball plug is screwed, and then the first installation tool is withdrawn.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. The valve ball plug is arranged on one side of the valve ball for limiting the valve ball, and the valve ball plug is arranged in the interior of the valve body, so that only one easy leakage point is formed at the connection between the valve body and the gas pipeline when the self-closing valve is connected with the gas pipeline, compared with the prior art in which the valve cover or the ball valve gas outlet is connected with the end of the valve body (two easy leakage points are formed), the easy leakage point of the gas is reduced, and the sealing performance of the self-closing valve is better.

[0028] 2. The first installation tool and the second installation tool can be used to quickly install the ball valve structure in the self-closing valve, and the installation efficiency is improved.

[0029] 3. The step on the first installation tool is convenient for pushing the valve ball sealing gasket during installation, and the valve ball sealing gasket is quickly assembled.

[0030] 4. The limiting end of the second installation tool end can carry the valve stem into the valve body and quickly cooperate with the shaft hole, and the limiting end can ensure that the valve stem does not rotate when the nut is tightened, thereby facilitating subsequent installation of the valve ball, realizing quick clamping of the clamping groove on the valve ball with the bottom end of the valve stem, and the limiting end can also position the valve stem by abutting the valve ball sealing gasket, improving assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings accompanying the specification of this application form a part thereof, serve to further provide a further understanding of the application, and together with the description of the exemplary embodiments of the application, serve to explain the application, and do not constitute an improper limitation of the application.

[0032] Figure 1 The overall structure of the gas self-closing valve in the embodiment of the application is shown in the schematic view;

[0033] Figure 2 The cross-sectional view of the gas self-closing valve in the embodiment of the application is shown;

[0034] Figure 3 The explosion cross-sectional view of the gas self-closing valve in the embodiment of the application is shown;

[0035] Figure 4 The structure of the first installation tool in the embodiment of the application is shown in the schematic view;

[0036] Figure 5 The structure of the second installation tool in the embodiment of the application is shown in the schematic view;

[0037] Figure 6 The first installation process of the valve ball sealing gasket in the embodiment of the application is shown in the schematic view;

[0038] Figure 7 The second installation process of the valve ball sealing gasket in the embodiment of the application is shown in the schematic view;

[0039] Figure 8 The third installation process of the valve ball sealing gasket in the embodiment of the application is shown in the schematic view;

[0040] Figure 9 The installation process of the valve stem in the embodiment of the application is shown in the schematic view;

[0041] Figure 10 The first installation process of the valve stem in the embodiment of the application is shown in the schematic view;

[0042] Figure 11 The second installation process of the valve stem in the embodiment of the application is shown in the schematic view;

[0043] Figure 12 The A part structure of the schematic view of the embodiment of the application is shown in the enlarged view; Figure 11

[0044] ​Figure 13 Fig. 3 shows a third installation process of the valve stem in the embodiment of the present application;

[0045] Figure 14 Fig. 4 shows a first installation process of the handle, gasket and nut in the embodiment of the present application;

[0046] Figure 15 Fig. 5 shows a second installation process of the handle, gasket and nut in the embodiment of the present application;

[0047] Figure 16 Fig. 6 shows a first stage structure of part B of Fig. 1 in the embodiment of the present application; Figure 15

[0048] Figure 17 Fig. 7 shows a second stage structure of part B of Fig. 1 in the embodiment of the present application; Figure 15

[0049] Fig. 8 shows an installation process of the valve ball, valve ball gasket and valve ball plug in the embodiment of the present application; Figure 18

[0050] Fig. 9 shows a structure of part C of Fig. 1 in the embodiment of the present application; Figure 19 Figure 18 Fig. 10 shows a first installation process of the valve ball, valve ball gasket and valve ball plug in the embodiment of the present application;

[0051] Figure 20 Fig. 11 shows a second installation process of the valve ball, valve ball gasket and valve ball plug in the embodiment of the present application;

[0052] Figure 21 Fig. 12 shows a third installation process of the valve ball, valve ball gasket and valve ball plug in the embodiment of the present application;

[0053] Figure 22 Fig. 13 shows a fourth installation process of the valve ball, valve ball gasket and valve ball plug in the embodiment of the present application;

[0054] Figure 23 Fig. 14 shows a structure of part D of Fig. 1 in the embodiment of the present application.

[0055] Figure 24 In the drawings, the mutual distance or size is exaggerated for showing the position of each part, and the schematic view is only for illustration. Figure 23

[0056] In the drawings, the mutual distance or size is exaggerated for showing the position of each part, and the schematic view is only for illustration.

[0057] ​​​Wherein: 1. valve body, 2. valve stem, 3. handle, 4. gasket, 5. nut, 6. sealing ring, 7. valve ball, 8. internal thread, 9. valve ball sealing pad, 10. valve ball plug, 11. first installation tool, 12. second installation tool, 13. boss, 14. shaft hole; 7-1. card slot, 11-1. matching rod, 11-2. matching shaft, 11-3. handle; 12-1. support rod, 12-2. limit end. DETAILED DESCRIPTION

[0058] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0059] Example 1

[0060] In a typical embodiment of the present application, referring to Figures 1-24 the integrated gas self-closing valve, including the self-closing valve body structure, and the self-closing valve body structure inside integrated ball valve structure, the self-closing valve body includes a valve body at one end, the ball valve is integrated in the valve body, and the self-closing valve body forms an integrated gas self-closing valve.

[0061] As shown in Figures 1-3 the ball valve is provided in the valve body 1 at one end of the self-closing valve body, the end of the valve body 1 is used to connect the gas pipeline, and the ball valve includes a valve stem 2, a handle 3, a gasket 4, a nut 5, a sealing ring 6, a valve ball 7, two valve ball sealing pads 9 and a valve ball plug 10.

[0062] Specifically, the valve ball 7 is arranged in the valve body 1 and is rotatably connected with the valve body 1, the valve ball 7 is provided with a card slot 7-1, one end (bottom end) of the valve stem 2 is used to be connected with the card slot 7-1 of the valve ball 7, the valve stem 2 drives the valve ball 7 to rotate, the other end (top end) of the valve stem 2 penetrates the shaft hole 14 on the valve body 1, reaches the outside of the valve body 1 and is connected with the handle 3.

[0063] Two sealing rings 6 are installed on the side of the valve stem 2, which are used to ensure sealing, and the sealing ring 6 is located between the side of the valve stem 2 and the valve body 1. The valve stem 2 is provided with a threaded hole, the nut 5 with the gasket 4 is connected with the threaded hole at the top end of the valve stem 2 through the handle 3, and the gasket 4 is located between the nut 5 and the handle 3. By the stretching force when the nut 5 is tightened, the valve stem 2 can be installed in place.

[0064] Two valve ball sealing pads 9 are located on both sides of the valve ball 7 along the axial direction of the valve body 1, so that Figure 2 as an example of the view direction, the two valve ball sealing pads 9 are located on the left and right sides of the valve ball 7, the valve ball sealing pad 9 on the right side is arranged between the valve ball and the boss 13 of the valve body, the boss 13 and the valve ball 7 are used to limit the two sides of the valve ball sealing pad 9, and the valve ball sealing pad 9 on the left side is located between the valve ball 7 and the valve ball plug 10.

[0065] As shown in Figure 2 and Figure 3 , the valve body 1 is provided with an internal thread 8 near the left end for fixed connection with the valve ball plug 10 for limiting the valve ball sealing ring 9. The valve ball plug 10 is hollow in the middle and has a polygonal structure for sleeving and clamping the matching rod 11-1 on the first installation tool, which functions as a wrench to tighten the valve ball plug 10 on the internal thread in the valve body 1.

[0066] In this embodiment, the valve ball plug is arranged on the side of the valve ball 7 for limiting the valve ball 7, and the valve ball plug 10 is located inside the valve body 1, so that when the gas self-closing valve is actually connected with the gas pipeline, there is only one easy leakage point at the connection between the valve body 1 and the gas pipeline, which reduces the easy leakage points of gas compared with the existing valve cover or ball valve gas outlet connected to the end of the valve body (having two easy leakage points), making the self-closing valve have better overall structural sealing performance.

[0067] Embodiment two

[0068] For the installation of the ball valve in the prior art, the valve stem is usually put into the valve body, and the valve stem is made to pass through the shaft hole by constantly shaking, and handles, nuts and other structures are installed. For the valve ball structure, it needs to cooperate with the valve stem, and it is difficult to install and cooperate under the condition of positioning. Similarly, the installation of sealing rings, gaskets and other structures is not convenient. This embodiment proposes an assembly method of an integrated gas self-closing valve, which can improve the installation speed and efficiency by installing the structure of the ball valve through the first installation tool 11 and the second installation tool 12.

[0069] As shown in Figure 4 and Figure 5 , the first installation tool 11 includes a handle 11-3, a matching rod 11-1 and a matching shaft 11-2 connected in sequence, the outer diameter of the matching rod 11-1 is larger than that of the matching shaft 11-2, so that a step is formed at the connection between the two. The middle part of the matching rod 11-1 is fixedly welded with the handle 11-3, and the handle 11-3 is convenient for rotating the first installation tool 11.

[0070] The second installation tool 12 includes a support rod 12-1, one end of the support rod 12-1 is connected with a limiting end 12-2, the limiting end 12-2 is provided with a limiting groove for clamping the valve stem 2, and the shape of the limiting groove is matched with the bottom end of the valve stem 2, so that the bottom end of the valve stem 2 can be matched with the limiting groove, and the second installation tool 12 can be used for installation.

[0071] The specific installation method is as follows:

[0072] First step: install the first valve ball sealing pad 9;

[0073] As shown in Figures 6-8 , the first valve ball gasket 9 is sleeved on the first installation tool 11, and the first installation tool 11 is inserted into the valve body to install the valve ball gasket.

[0074] Since there is an outer diameter difference between the matching rod 11-1 and the matching shaft 11-2, the matching shaft 11-2 is a round rod structure, and the valve ball gasket 9 is sleeved on the step at the connection between the matching rod 11-1 and the matching shaft 11-2, and the valve ball gasket 9 is tightly attached to the step Figure 7 ).

[0075] The first installation tool 11 carrying the valve ball gasket 9 is inserted into the valve body 1 along the axial direction of the valve body, and under the push of the step, the valve ball gasket 9 is clamped at the boss 13 inside the valve body Figure 8 ), and then the first installation tool 11 is withdrawn to install the first valve ball gasket 9.

[0076] Step 2: Install the valve stem 2;

[0077] As shown in Figures 9-13 , the valve stem 2 is clamped on the limiting end 12-2 at the end of the second installation tool 12, the second installation tool is inserted into the shaft hole inside the valve body, and one end of the valve stem passes through the shaft hole;

[0078] After the bottom end of the valve stem 2 is clamped with the limiting end 12-2, the valve stem 2 is sent to the shaft hole 14 inside the valve body through the supporting rod 12-1 Figure 10 . It should be noted that during the process of inserting the supporting rod 12-1 into the valve body, the supporting rod 12-1 should move close to the bottom end of the valve body 1 to ensure that the top end of the valve stem 2 is not blocked during the movement and smoothly reaches the shaft hole 14 Figure 11 ).

[0079] When the front end of the limiting end 12-2 abuts against the installed valve ball gasket 9, it is proved that the valve stem has been located below the shaft hole, so the front end of the limiting end 12-2 and the valve ball gasket 9 have the function of positioning Figure 12 ).

[0080] The valve stem 2 is driven into the valve body 1 by the supporting rod 12-1, and the supporting rod 12-1 is lifted upwards so that the top end of the valve stem 2 passes through the shaft hole on the valve body Figure 13 ).

[0081] Step 3: Install the handle 3, the gasket 4, and the nut 5

[0082] During this process, the second installation tool 12 cannot be immediately withdrawn, and the limiting end 12-2 needs to be used to press against the bottom end of the valve stem 2, and then the handle 3 and the threaded hole at the top end of the valve stem 2 are connected by the nut 5 to fix the position of the valve stem 2, and the gasket 4 should be installed between the nut 5 and the handleFigure 14 )。

[0083] When the nut 5 and the handle 3 are installed, the second installation tool 12 cannot be withdrawn at this time, and the second installation tool 12 needs to be used to continue to limit the bottom end of the valve rod 2 to prevent the valve rod 2 from rotating in the process of tightening the nut 5, until the nut 5 is tightened, and the valve rod 2 is installed in place by the stretching force of the nut on the valve rod 2 in the process of tightening the nut 5. Figures 15-17 ), at which time the second installation tool 12 is withdrawn.

[0084] In the above process, if the second installation tool 12 is withdrawn before the nut 5 is tightened, the nut 5 will drive the valve rod 2 to rotate in the process of tightening, and the rotated valve rod 2 is not convenient to cooperate with the clamping groove 7-1 on the valve ball 7, which is easy to cause the subsequent valve ball 7 installation difficult.

[0085] Fourth step: install the valve ball 7, the valve ball gasket 9, and the valve ball plug 10

[0086] As shown in Figures 19-24 , the valve ball plug, the valve ball gasket, and the valve ball are sequentially sleeved on the first installation tool, wherein the valve ball plug 10 is clamped with the first installation tool 11, the second valve ball gasket 9 and the valve ball 7 are rotationally matched with the first installation tool 11, then the first installation tool 11 is inserted into the valve body 1, the first installation tool 11 is rotated, the valve ball plug 10 is matched with the internal thread 8 arranged at the end of the valve body 1, the second valve ball gasket 9 is pressed, the first installation tool 11 is withdrawn, and finally the installation of the integrated gas self-closing valve is completed.

[0087] As shown in Figure 18 and Figure 19 , the cross section of the matching rod 11-1 and the center position of the valve ball plug 10 are the same polygonal structure, which is convenient for clamping, and the matching rod 11-1 of the embodiment is a hexagonal prism, and the middle of the valve ball plug 10 is a hexagonal hollow structure.

[0088] As shown in Figure 20 and Figure 21 , the valve ball plug 10 is sleeved and clamped on the matching rod 11-1, the second valve ball gasket 9 and the valve ball 7 are sleeved on the matching shaft and abut against the step, the first installation tool 11 is inserted into the valve body 1 by the handle 11-3, the clamping groove 7-1 on the valve ball 7 is clamped with the end of the valve rod 2, at this time, under the push of the step, the valve ball gasket 9 is also installed in place. The lengths of the matching rod 11-1 and the matching shaft 11-2 of the embodiment are designed according to the structure of the self-closing valve to be assembled, so that the valve ball plug 10 is adjacent to the internal thread 8 of the valve body 1 at this time. Figure 22 ).

[0089] After that, the valve body 1 can be changed to a vertical state, the handle 11-3 is rotated, the valve ball plug 10 cooperates with the internal thread 8 of the valve body 1 under the action of gravity, the handle 11-3 is continuously rotated until the valve ball plug 10 is tightened Figure 24 ), at this time, the first installation tool 11 is withdrawn.

[0090] Of course, the valve body can not be changed to a vertical state, and the handle 11-3 is directly rotated, and the valve ball plug 10 can be cooperated with the internal thread of the valve body 1 Figure 23 ), only the installation effect of the valve ball plug 10 under the action of gravity is better when the valve body is changed to a vertical state.

[0091] In the embodiment, the ball valve structure in the self-closing valve can be quickly assembled by the first installation tool 11 and the second installation tool 12, and the installation efficiency is improved.

[0092] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Assembly method of an integrated gas self-closing valve, characterized in that, The integrated gas self-closing valve comprises a self-closing valve body and a ball valve, the ball valve is arranged in a valve body at one end of the self-closing valve body, and the end of the valve body is used for connecting a gas pipeline, the ball valve comprises: a valve ball arranged in the valve body and rotationally connected with the valve body; a valve rod, one end of the valve rod is engaged with the valve ball, and the other end of the valve rod penetrates to the outside of the valve body and is connected with a handle; valve ball sealing gaskets are arranged on both sides of the valve ball in the axial direction of the valve body, an inner thread is arranged on the end of the valve body close to the end, and a valve ball plug is connected with the valve ball sealing gasket, and the valve ball plug compresses a valve ball sealing ring; the assembly method of the gas self-closing valve comprises the following steps: a first valve ball sealing gasket is sleeved on a first installation tool, and the first installation tool is inserted into the inside of the valve body to realize installation of the valve ball sealing gasket; the valve rod is clamped on a limiting end head at the end of a second installation tool, the second installation tool is inserted into the inside of the valve body at an axial hole, and one end of the valve rod penetrates through the axial hole; a nut is used for connecting the handle and a threaded hole at the top end of the valve rod to fix the position of the valve rod; a valve ball plug, a second valve ball sealing gasket and the valve ball are sequentially sleeved on the first installation tool, the valve ball plug is clamped on the first installation tool, the second valve ball sealing gasket and the valve ball are rotationally matched with the first installation tool, then the first installation tool is inserted into the inside of the valve body, the first installation tool is rotated, the inner thread arranged on the end of the valve body close to the end is matched with the valve ball plug, and the second valve ball sealing gasket is compressed; the first installation tool is withdrawn, and the integrated gas self-closing valve is formed; the first installation tool comprises a handle, a matching rod and a matching shaft which are sequentially connected, the outer diameter of the matching rod is larger than the outer diameter of the matching shaft, so that a step is formed at the connection position of the matching rod and the matching shaft, the first valve ball sealing gasket is sleeved on the matching shaft and abuts against the step during installation, the first valve ball sealing gasket is pushed into the inside of the valve body by the handle, and the first valve ball sealing gasket is clamped on the boss of the valve body.

2. The method of assembling an integrated gas shut-off valve according to claim 1, wherein a sealing ring is arranged between the valve rod and the valve body, and the handle is fixedly connected with the valve rod through the nut.

3. The method of assembling an integrated gas shut-off valve according to claim 1, wherein one valve ball sealing gasket is arranged between the valve ball and the boss of the valve body, and the other valve ball sealing gasket is arranged between the valve ball plug and the valve ball.

4. The method of assembling an integrated gas shut-off valve according to claim 1, wherein the middle position of the valve ball plug is a hollow polygonal structure, and a clamping groove is arranged on the valve ball and used for clamping the valve rod.

5. The method of assembling an integrated gas shut-off valve according to claim 1, wherein the second installation tool comprises a supporting rod, one end of the supporting rod is connected with a limiting end head, a limiting groove for clamping the valve rod is arranged on the limiting end head, the valve rod is driven into the inside of the valve body by the supporting rod, and the supporting rod is lifted to make the top end of the valve rod penetrate through the axial hole of the valve body.

6. The method of assembling an integrated gas shut-off valve according to claim 5, wherein the nut is used for threadedly matching the handle and the valve rod, a gasket is arranged between the nut and the handle, the valve rod is fixed in place by stretching the nut through tightening.

7. The method of assembling an integrated gas shut-off valve according to claim 1, wherein the cross section of the matching rod is a polygonal structure which is the same as the center position of the valve ball plug, so that the matching rod and the valve ball plug are clamped together.

8. The method of assembling an integrated gas shut-off valve according to claim 7, wherein the valve ball plug is sleeved on the matching rod, the second valve ball sealing gasket and the valve ball are sleeved on the matching shaft, the first installation tool is inserted into the valve body by the handle, the clamping groove on the valve ball is clamped with the end of the valve rod, then the handle is rotated, the valve ball plug is matched with the inner thread of the valve body, the handle is continuously rotated until the valve ball plug is tightened, and then the first installation tool is withdrawn.

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