A quick assembly tool and method for a rising stem ball valve

Abstract

The application discloses a kind of upper ball valve quick assembly tool and method, it is related to valve technical field, including valve body, flow channel and ball, two valve seats are arranged in the flow channel, each valve seat is processed with internal thread, two corresponding screw rods with internal thread are arranged in the flow channel, when the ball needs to be installed, screw rod is driven corresponding valve seat to move away from the direction of valve body center by internal thread, so that the distance between two valve seats increases, when the ball is placed in valve body, two screw rods are loosened, the valve seat moves relatively and extrudes ball, the number of turns of the screw rod and the distance of the screw rod movement are used to determine whether the ball is installed correctly by the relationship between the linear distance of the screw rod movement and the number of turns, solve the problem that the ball installation position is not accurate when the existing tool installs ball valve, the ball position needs to be adjusted by disassembling and assembling tool back and forth.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a quick assembly tooling and method for an upper-mounted ball valve. Background Technology

[0002] Currently, while existing installation tools can provide some convenience and reduce installation time when installing top-entry ball valves, there are still some inconveniences in practical applications. For example, installation requires the assistance of two or more people to be completed quickly.

[0003] Furthermore, when this type of tooling is applied to industries such as petroleum or chemical engineering, frequent maintenance is required. In such applications, the entire ball valve often needs to be inspected, which often requires manual prying to move the valve seat and remove the ball. This method is not only time-consuming and labor-intensive during installation, but also extremely inconvenient during subsequent maintenance. Manual prying can easily damage the valve seat, resulting in poor sealing. After maintenance, when the valve seat is installed back into the valve body, it may deform slightly, causing it to become less responsive under the drive of the disc spring, leading to poor sealing and sensitivity. Consequently, the overall sealing effect of the ball valve is poor, resulting in product spillage.

[0004] Furthermore, during the installation of the ball, existing tooling often simply moves the valve seat and inserts the ball into the valve body. The ball's installation position can only be verified after the tooling is removed. Therefore, if the installation position is incorrect, it is inconvenient to obtain the ball's installation status without disassembling the tooling, resulting in the need for frequent installation and disassembly of the tooling to adjust the ball's position. Summary of the Invention

[0005] The purpose of this invention is to provide a quick assembly fixture and method for top-mounted ball valves, in order to solve the technical problem mentioned in the background art where the ball installation position is inaccurate when using existing fixtures to install ball valves, which requires repeated disassembly and reassembly of the fixture to adjust the ball position.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick assembly fixture for an upper-mounted ball valve, comprising a valve body, a flow channel, and a ball. Two valve seats are disposed within the flow channel, each valve seat having an internal thread. Two lead screws corresponding to the internal threads are disposed within the flow channel. A separator and a disc spring are also provided, the disc spring being located between the valve seat and the valve body. The width of the separator is equal to the diameter of the ball. Bearings are respectively disposed on both sides of the flow channel, located outside the valve body. A bushing is disposed within each bearing, and the lead screw is fixedly connected to the bushing. The outer surface of the bushing is marked with graduations. When the ball needs to be installed, the separator is first placed between the two valve seats, preventing the lead screw from moving linearly. The lead screw is rotated, and through its internal thread, it moves the corresponding valve seat away from the center of the valve body, increasing the distance between the two valve seats. The number of rotations indicates the distance the lead screw moves the valve seat. When the ball is placed into the valve body, the two lead screws are released, and the two valve seats move relative to each other and press the ball under the action of the disc spring. The displacement of the scale indicates the distance the valve seat moves. By comparing the displacement of the scale with the number of rotations, the correctness of the ball's installation position can be determined. If the distance the valve seat moves is less than the distance the lead screw moves the valve seat, or if the distance the valve seat moves exceeds the distance the lead screw moves the valve seat, the ball's installation position is inaccurate, and the ball's installation status needs to be assessed.

[0007] Preferably, the bearing includes an inner sleeve, on which a set screw is provided to abut against the bearing sleeve.

[0008] Preferably, a plug is provided at the end of the lead screw away from the valve body, and a handwheel is provided on the plug.

[0009] Preferably, the valve body has multiple movable slots corresponding to the valve seat, each movable slot is provided with a sealing gasket and a connector, each movable slot is provided with a disc spring connected to the corresponding connector, and the valve body is provided with an installation slot.

[0010] Preferably, the sphere has a lower shaft hole and an upper shaft hole, the valve body has a lower valve shaft that can be inserted into the lower shaft hole, the valve body has a valve cover, the valve cover has an upper valve shaft that can be inserted into the upper shaft hole, the valve cover has a sealing cover, and the upper valve shaft has a handle.

[0011] A method for quick assembly of an upper-mounted ball valve, the method comprising the following steps: S1. First, install the valve seats in the corresponding moving slots respectively, and place the separator between the two valve seats; S2. Install the two bearings on the outside of the two flow channels of the valve body respectively, and fit the bushing with the bearing; S3. Connect the valve seat to the corresponding lead screw thread and make the lead screw drive the valve seat to move into the corresponding moving groove, so that the distance between the two valve seats is greater than the diameter of the ball. S4. Place the ball into the installation slot. The two valve seats move inward under the action of the disc spring. Determine whether the two valve seats are in close contact with the ball. If yes, the installation is complete. If not, proceed to step S5. S5. Then move the two valve seats away from the ball and adjust the position of the ball until the distance the two valve seats have moved is equal to the distance the lead screw has moved the valve seats. Then the installation position of the ball is accurate.

[0012] Preferably, step S2 includes the following steps: S201: The two end faces of the lower end of the separator near the valve seat are inclined, which allows it to be inserted between the two valve seats when they are close to each other.

[0013] Preferably, step S3 includes the following steps: S301: During the internal thread connection between the lead screw and the valve seat, after the internal thread of the lead screw and the valve seat is quickly connected, a number of rotations is set. After the handwheel is rotated to reach this number of rotations, it stops. The set screw is rotated to press the bushing so that the inner sleeve and the bushing are relatively fixed. The value of the scale at this time is determined to be the reference value. S302: Then continue to rotate the lead screw, so that the lead screw drives the corresponding valve seat to move into the corresponding moving groove through the internal thread.

[0014] Preferably, step S4 includes the following steps: S401: If the distance the two valve seats move is less than the distance the lead screw drives the valve seats to move, the ball installation angle may be deviated. S4011: When the movement distance of the two valve seats is small, or the movement distance of one side is large and the movement distance of the other side is small, the two lead screws can be directly squeezed, so that the lead screws drive the valve seats to squeeze inward. If the lower valve shaft is tilted and inserted into the lower shaft hole at this time, the ball can be straightened and the correct assembly of the ball can be completed. S4012: If the distance the two valve seats move is greater than the distance the lead screw drives the valve seats to move, the ball will not fall to the bottom of the mounting groove, resulting in the two valve seats moving too far.

[0015] The beneficial effects of this invention are: The ball valve is connected to the valve seat via a lead screw and bushing, and an internal thread is provided on the valve seat. A handwheel connects to the lead screw, making it easy and time-saving to move the valve seat. A single person can complete the entire ball valve installation. The ball's position, height, and diameter are determined by the scale on the bushing. Adjustments to the ball's position or height can be made without removing the aforementioned tools, allowing for immediate adjustment based on different situations. The valve seat position can be adjusted and restricted without repeatedly turning the handwheel during adjustment, increasing the convenience of this tooling and the accuracy of determining the ball's installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a full cross-sectional planar schematic diagram of the present invention.

[0018] Figure 3 This is a cross-sectional view of the separator of the present invention within the mounting groove.

[0019] Figure 4 This is a schematic diagram showing the connection relationship between the handwheel and bearings of the present invention.

[0020] Figure 5 This is a cross-sectional plan view of the lead screw and valve seat of the present invention.

[0021] Figure 6 This is a plan view of the lead screw, bushing, and scale of the present invention.

[0022] Figure 7 This is a cross-sectional view of the sphere of the present invention at the lower shaft hole and the upper shaft hole.

[0023] The attached figures are labeled as follows: 1. Valve body; 101. Flow passage; 102. Valve seat; 103. Bearing; 1031. Inner sleeve; 104. Moving groove; 105. Sealing gasket; 106. Connecting piece; 107. Disc spring; 108. Lower valve shaft; 109. Mounting groove; 110. Separator; 2. Ball; 201. Lower shaft hole; 202. Upper shaft hole; 3. Lead screw; 301. Bushing; 302. Scale; 303. Insert; 304. Handwheel; 305. Set screw; 4. Valve cover; 401. Sealing cover; 402. Upper valve shaft; 403. Rotary handle. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1 Currently, while existing installation tools can provide some convenience and reduce installation time when installing top-entry ball valves, there are still some inconveniences in practical applications. For example, installing one ball valve requires the assistance of two or more people to complete the installation quickly.

[0026] Furthermore, when this type of tooling is applied to industries such as petroleum or chemical, high-frequency maintenance is required. In such applications, when the entire ball valve needs to be maintained, it is often necessary to manually pry the valve seat 102 to remove the ball 2. This method is not only time-consuming and laborious during installation, but also extremely inconvenient during subsequent maintenance. Moreover, manual prying can easily damage the valve seat 102, resulting in poor sealing. After maintenance, when the valve seat 102 is installed into the valve body 1, it may deform slightly and become sluggish under the drive of the disc spring 107, leading to poor sealing and sensitivity. This, in turn, results in poor sealing performance of the entire ball valve, and may even cause product spillage.

[0027] Furthermore, during the installation of the ball 2, the existing tooling often only moves the valve seat 102 and inserts the ball 2 into the valve body 1. Then, the installation position of the ball 2 can only be verified after the tooling is removed. Therefore, if the installation position is incorrect, it is inconvenient to obtain the installation status of the ball 2 without disassembling the tooling, resulting in the need to frequently install and disassemble the tooling to adjust the position of the ball 2.

[0028] To resolve the above technical issues, please refer to [link / reference]. Figures 1 to 7As shown, an embodiment of the present invention provides a quick assembly fixture for an upper-mounted ball valve, comprising a valve body 1, a flow channel 101, and a ball 2. Two valve seats 102 are disposed within the flow channel 101, each valve seat 102 having an internal thread. Two lead screws 3 corresponding to the internal threads are disposed within the flow channel 101. When the ball 2 needs to be installed, the lead screws 3 drive the corresponding valve seat 102 away from the center of the valve body 1 via the internal threads, increasing the distance between the two valve seats 102. When the ball 2 is inserted into the valve body 1, the two lead screws 3 are released, and the valve seats 102 shift relative to each other. The valve seat 102 moves and squeezes the ball 2. When the distance the valve seat 102 moves is less than the distance the lead screw 3 drives the valve seat 102 to move, or when the distance the valve seat 102 moves exceeds the distance the lead screw 3 drives the valve seat 102 to move, the installation position of the ball 2 is inaccurate. Therefore, the installation status of the ball 2 is judged. Bearings 103 located on the outside of the valve body 1 are respectively provided on both sides of the flow channel 101. A bushing 301 is provided inside the bearing 103. The lead screw 3 is fixedly connected to the bushing 301. A scale 302 is provided on the outer surface of the bushing 301. After the ball 2 is installed, the movement distance of the valve seat 102 is... When the distance is just right to clamp the ball 2, the bearing 103 corresponds to the value of the scale 302, indicating that the ball 2 is correctly installed. The bearing 103 includes an inner sleeve 1031, on which a set screw 305 is provided to abut against the bushing 301. The end of the lead screw 3 away from the valve body 1 is provided with an insert 303, on which a handwheel 304 is provided. The valve body 1 has multiple moving grooves 104 corresponding to the valve seat 102. Each moving groove 104 is provided with a sealing gasket 105 and a connecting piece 106. Each groove 104 is provided with a disc spring 107 connected to the corresponding connector 106. The valve body 1 is provided with a mounting groove 109, and a separator 110 is provided in the mounting groove 109. The ball 2 is provided with a lower shaft hole 201 and an upper shaft hole 202. The valve body 1 is provided with a lower valve shaft 108 that can be inserted into the lower shaft hole 201. The valve body 1 is provided with a valve cover 4, and the valve cover 4 is provided with an upper valve shaft 402 that can be inserted into the upper shaft hole 202. The valve cover 4 is provided with a sealing cover 401, and the upper valve shaft 402 is provided with a handle 403.

[0029] In practical use, the lower valve shaft 108 is first installed on the valve body 1. Then, the disc spring 107, the connector 106, the sealing gasket 105, and the valve seat 102 are installed in the corresponding moving grooves 104. Then, the separator 110 is placed in the mounting groove 109. The inclined surface of the separator 110 pushes the two valve seats 102 into the corresponding moving grooves 104, and the disc spring 107 is compressed. Then, the bearing 103 is installed on the outside of the flow channel 101. This installation method can adopt any of the existing technologies that can detach and connect the bearing 103 to the outside of the flow channel 101.

[0030] Then, insert the lead screw 3 and bushing 301 into the inner sleeve 1031, so that the insert 303 is keyed to the handwheel 304. Then squeeze and rotate the handwheel 304 so that the two lead screws 3 are respectively connected to the internal threads of the corresponding valve seats 102. Continue to rotate the handwheel 304 and directly set a number of rotations. After reaching this number of rotations, stop rotating the handwheel 304. Then rotate the set screw 305. Using the position of the scale 302 that the set screw 305 abuts as the reference position, set the change of scale 302 by one rotation of the handwheel 304 to be one unit. This method can be set during processing. This technology adopts existing technology and will not be described in detail here. The width of the separator 110 is equal to the diameter of the ball 2. When the valve seat 102 moves inward, if the displacement is approximately consistent with the number of rotations of the handwheel 304, then the ball 2 is installed correctly.

[0031] Start turning the handwheel 304 again and record the number of rotations. This causes the handwheel 304 to drive the lead screw 3 to rotate, converting the rotation of the lead screw 3 into the linear motion of the valve seat 102. The valve body 1 has a guide groove corresponding to the connecting member 106. The connecting member 106 and the sealing gasket 105 can move within the guide groove. The disc spring 107 is located within the guide groove. The specific shape of the guide groove is not shown in the figure. This technique can use any existing method that can achieve the linear movement of the connecting member 106, which will not be described in detail here. This causes the valve seat 102 to gradually move deeper into the groove 104. The lead screw 3 drives the valve seat 102 to move away from the mounting groove 109 through the thread. The valve seat 102 drives the corresponding sealing gasket 105 and connecting member 106 to move synchronously, and the disc spring 107 is compressed.

[0032] After rotating the handwheel 304 a certain number of times, it can be observed whether the opposite ends of the two valve seats 102 are fully retracted into the corresponding moving grooves 104. If they are retracted, stop rotating the handwheel 304, and then place the ball 2 into the valve body 1 through the mounting groove 109. After the ball 2 falls into the mounting groove 109 and stops moving downward, rotate the set screw 305 in the opposite direction so that the set screw 305 no longer squeezes the bushing 301. The purpose of setting the bushing 301 is to prevent the set screw 305 from directly squeezing the lead screw 3, thereby preventing the lead screw 3 from being gradually damaged due to squeezing. Thus, only the bushing 301 needs to be replaced to reduce costs.

[0033] Then, under the action of the disc spring 107, the disc spring 107 drives the valve seat 102 to move closer to the ball 2 through the connector 106 and the sealing gasket 105. At this time, the scale 302 of the bushing 301 moves and moves to the corresponding value of the corresponding scale 302. By rotating the handwheel 304 a number of times, observe whether the displacement of the scale 302 at this time is proportional to the number of rotations of the handwheel 304. If they are proportional and equal, the installation position of the ball 2 is correct. Then, disconnect the screw 3 from the internal thread of the valve seat 102 and remove the bearing 103 and other parts from the valve body 1.

[0034] If one of the lead screws 3 moves a greater distance than the other, the lower valve shaft 108 may be inserted tilted into the lower shaft hole 201, causing the ball 2 to shift to one side. In this case, the two handwheels 304 can be squeezed to drive the lead screw 3 and valve seat 102 to squeeze the ball 2, which can play a certain role in straightening. If this is not possible, the valve seat 102 can be pulled out again to adjust the position of the ball 2 until the two lead screws 3 can move the correct distance at the same time.

[0035] If the two lead screws 3 move a long distance, the ball 2 may not have completely fallen into the mounting slot 109. It needs to be manually adjusted or reinstalled. Alternatively, the diameter of the ball 2 may be too small or the wrong diameter may have been selected. The ball 2 needs to be removed and a ball of the correct diameter should be selected and reinstalled. If the two lead screws 3 move a very short distance, it may be because the ball 2 with the wrong diameter was installed. The ball 2 needs to be removed and a ball of the correct size should be reinstalled. Based on the above situations, it should be determined whether the position of the ball 2 needs to be readjusted or reinstalled until the two lead screws 3 can move the correct distance simultaneously.

[0036] After the ball body 2 is installed, the upper valve shaft 402 is then installed into the upper shaft hole 202. The valve cover 4, sealing cover 401, etc. are then installed. Finally, the handle 403 is fixedly connected to the top of the upper valve shaft 402, thus completing the entire ball valve installation process.

[0037] By using the lead screw 3 and bushing 301, and by providing an internal thread on the valve seat 102, the lead screw 3 can be connected to the valve seat 102. Simultaneously, the handwheel 304 is connected to the lead screw 3, making it time-saving and labor-saving to move the valve seat 102. A single person can complete the entire ball valve installation. Then, by observing the changes in the scale 302 on the bushing 301, the correctness of the ball 2's installation position, installation height, and diameter can be determined. Furthermore, when adjusting the position or height of the ball 2, the aforementioned tools do not need to be removed. The installation position of the ball 2 can be determined and adjusted at any time according to different situations, without needing to repeatedly turn the handwheel 304 during the adjustment process. This allows for adjustment and restriction of the valve seat 102's position, increasing the convenience of using this tooling and the accuracy of determining the ball 2's installation.

[0038] Example 2 Based on the above embodiments, this embodiment also provides a quick assembly method for an upper-mounted ball valve, including the following steps: S1. First, install the valve seat 102 in the corresponding moving groove 104, and place the separator 110 between the two valve seats 102. The width of the upper side of the separator 110 is equal to the diameter of the ball 2.

[0039] S2. Install the two bearings 103 on the outside of the two flow channels 101 of the valve body 1 respectively, and fit the bushing 301 with the bearing 103.

[0040] Specifically, S2 includes the following steps: S201: The two end faces of the lower end of the separator 110 near the valve seat 102 are inclined, which allows it to be inserted between the two valve seats 102 when they are close to each other.

[0041] After the separator 110 is inserted into the mounting groove 109, the inclined surface of the separator 110 contacts the opposite end of the valve seat 102. Continuing to move the separator 110 downwards will cause the two valve seats 102 to move away from each other, providing support for the subsequent connection between the lead screw 3 and the valve seat 102. This prevents the valve seat 102 from shifting when the lead screw 3 is connected to the internal thread of the valve seat 102, which would make the threaded connection between the lead screw 3 and the internal thread of the valve seat 102 difficult.

[0042] S3. Connect the valve seat 102 to the corresponding lead screw 3 and make the lead screw 3 drive the valve seat 102 to move into the corresponding moving groove 104, so that the distance between the two valve seats 102 is greater than the diameter of the ball 2.

[0043] Specifically, S3 includes the following steps: S301: During the internal thread connection between the lead screw 3 and the valve seat 102, after feeling the resistance of the disc spring 107, the value of the calibration 302 at this time is determined to be the reference value.

[0044] S302: Then continue to rotate the lead screw 3, so that the lead screw 3 drives the corresponding valve seat 102 to move into the corresponding moving groove 104 through the internal thread.

[0045] When rotating the handwheel 304, only slight pressure is needed to quickly connect the lead screw 3 to the internal thread of the valve seat 102. Afterward, pressure on the handwheel 304 is no longer required. Since the disc spring 107 is compressed at this time, the separator 110 provides support to prevent the disc spring 107 from pushing the valve seat 102 to move. Simply rotate the handwheel 304. A number of rotations can be set directly, depending on the diameter of the ball 2 of different ball valves. After a certain number of rotations, the current position is set as the basic value of the initial scale 302. The number of rotations of the lead screw can be set in any way that can achieve this matching result, and there is no limitation here. Then, rotate the set screw 305 directly to compress the bushing 301, so that the inner sleeve 1031 and the bushing 301 are relatively fixed. Rotating the handwheel 304 will cause the valve seat 102 to be displaced and move into the moving groove 104.

[0046] S4. Place the ball 2 into the mounting slot 109. Move the two valve seats 102 inward. Determine whether the two valve seats 102 are in close contact with the ball 2. If yes, the installation is complete. Otherwise, proceed to step S5.

[0047] Specifically, S4 includes the following steps: S401: If the distance that the two valve seats 102 move is less than the distance that the lead screw 3 drives the valve seat 102 to move, then the installation angle of the ball 2 may be deviated.

[0048] S4011: When the movement distance of the two valve seats 102 is small, or the movement distance of one side is large and the movement distance of the other side is small, the two lead screws 3 can be directly squeezed, so that the lead screws 3 drive the valve seats 102 to squeeze inward. If the lower valve shaft 108 is inserted into the lower shaft hole 201 at this time, the ball 2 can be straightened and the correct assembly of the ball 2 can be completed.

[0049] S4012: If the distance the two valve seats 102 move is greater than the distance the lead screw 3 drives the valve seats 102 to move, the ball 2 will not fall to the bottom of the mounting groove 109, resulting in the two valve seats 102 moving too far.

[0050] After determining the reference value of scale 302 and installing the ball into valve body 1, rotate set screw 305 in the opposite direction so that bushing 301 can move axially relative to inner sleeve 1031. Determine the unit displacement of scale 302 based on the number of turns of handwheel 304 in step 3 above, and then determine the correct amount of change that scale 302 needs to move after ball 2 is installed. If the displacement of scale 302 moved by bushing 301 is correct, then ball 2 is installed correctly. If the installation is incorrect, the situations in S401, S4011 and S4012 above will occur. In this case, the position of ball 2 needs to be adjusted. Proceed to step S5 and make the corresponding adjustments according to the actual situation.

[0051] S5. Then, move the two valve seats 102 away from the ball 2 and adjust the position of the ball 2 until the distance the two valve seats 102 move is equal to the distance the lead screw 3 drives the valve seats 102 to move. Then the installation position of the ball 2 is accurate. If the diameter of the ball 2 is not selected correctly, move the two valve seats 102 away from each other, and then take out the ball 2. Then select the correct ball 2 and put it back into the installation groove 109. Perform the judgment of step S4 above. If the installation is correct, proceed with the subsequent component installation. Install the valve cover 4, sealing cover 401, upper valve shaft 402 and handle 403 into the corresponding positions of the ball valve in the correct order, and then remove the assembly fixture.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A quick assembly tool for an upper ball valve, comprising a valve body (1), a flow passage (101) and a ball body (2), characterized in that, Two valve seats (102) are provided in the flow channel (101), each valve seat (102) is machined with internal threads. Two lead screws (3) corresponding to the internal threads are provided in the flow channel (101). A separator (110) and a disc spring (107) are also provided. The disc spring (107) is located between the valve seat (102) and the valve body (1). The width of the separator (110) is equal to the diameter of the ball (2). Bearings (103) located on the outside of the valve body (1) are respectively provided on both sides of the flow channel (101). A bushing (301) is provided in the bearing (103). The lead screw (3) is fixedly connected to the bushing (301). The outer surface of the bushing (301) is provided with a scale (302). When the ball (2) needs to be installed, first place the separator (110) between the two valve seats (102), fix the screw (3) so that it cannot move in a straight line, and rotate the screw (3) to drive the corresponding valve seat (102) to move away from the center of the valve body (1) through the internal thread, so that the distance between the two valve seats (102) increases. At this time, the number of rotations indicates the distance that the screw (3) drives the valve seat (102) to move. When the ball (2) is placed in the valve body (1), release the two screws (3), and the two valve seats (102) are under the action of the disc spring (107). The ball (2) is moved and squeezed relative to the scale (302). The displacement of the scale (302) indicates the distance the valve seat (102) moves. The relationship between the displacement of the scale (302) and the number of rotations is compared to determine whether the installation position of the ball (2) is correct. When the distance the valve seat (102) moves is less than the distance the lead screw (3) drives the valve seat (102) to move, or when the distance the valve seat (102) moves exceeds the distance the lead screw (3) drives the valve seat (102) to move, the installation position of the ball (2) is inaccurate. The installation status of the ball (2) is then judged.

2. The quick assembly tooling for ball valves of claim 1, wherein, The bearing (103) includes an inner sleeve (1031) on which a set screw (305) is provided to abut against the bushing (301).

3. The quick assembly tooling for ball valves of claim 2, wherein, The screw (3) is provided with a plug (303) at the end away from the valve body (1), and a handwheel (304) is provided on the plug (303).

4. The quick assembly tooling for ball valves as claimed in claim 3, wherein, The valve body (1) has multiple moving grooves (104) corresponding to the valve seat (102). Each moving groove (104) is provided with a sealing gasket (105) and a connector (106). Each moving groove (104) is provided with a disc spring (107) connected to the corresponding connector (106). The valve body (1) is provided with an installation groove (109).

5. The quick assembly tooling for ball valves as claimed in claim 4, wherein, The ball (2) has a lower shaft hole (201) and an upper shaft hole (202). The valve body (1) is provided with a lower valve shaft (108) that can be inserted into the lower shaft hole (201). The valve body (1) is provided with a valve cover (4). The valve cover (4) is provided with an upper valve shaft (402). The upper valve shaft (402) can be inserted into the upper shaft hole (202). The valve cover (4) is provided with a sealing cover (401). The upper valve shaft (402) is provided with a handle (403).

6. A method for quickly assembling an upper-mounted ball valve, characterized in that the method employs the quick-assembly tooling for an upper-mounted ball valve according to claim 5. Includes the following steps: S1. First, install the valve seats (102) in the corresponding moving slots (104) respectively, and place the separator (110) between the two valve seats (102); S2. Install two bearings (103) on the outside of the two flow channels (101) of the valve body (1) respectively, and fit the bushing (301) with the bearing (103); S3. Connect the valve seat (102) to the corresponding lead screw (3) and make the lead screw (3) drive the valve seat (102) to move into the corresponding moving groove (104) so ​​that the distance between the two valve seats (102) is greater than the diameter of the ball (2); S4. Place the ball (2) into the mounting slot (109). The two valve seats (102) move inward under the action of the disc spring (107). Determine whether the two valve seats (102) are in close contact with the ball (2). If yes, the installation is complete. If no, proceed to step S5. S5. Then move the two valve seats (102) away from the ball (2) and adjust the position of the ball (2) until the distance the two valve seats (102) move is equal to the distance the lead screw (3) drives the valve seats (102) to move. Then the installation position of the ball (2) is accurate.

7. A method of quick assembly of a ball valve on a vessel according to claim 6, characterized in that, S2 includes the following steps: S201: The two end faces of the lower end of the separator (110) near the valve seat (102) are inclined, which can be inserted between the two valve seats (102) when the two valve seats (102) are close to each other.

8. A method of quick assembly of a ball valve on a vessel according to claim 7, characterized in that, S3 includes the following steps: S301: During the internal thread connection between the lead screw (3) and the valve seat (102), after the internal thread of the lead screw (3) and the valve seat (102) is quickly connected, a number of rotations is set. The handwheel (304) is rotated to reach this number of rotations and then stopped. The set screw (305) is rotated to press the bushing (301) so that the inner sleeve (1031) and the bushing (301) are relatively fixed. The value of the scale (302) at this time is determined to be the reference value. S302: Then continue to rotate the lead screw (3) so that the lead screw (3) drives the corresponding valve seat (102) to move into the corresponding moving groove (104) through the internal thread.

9. A method of quick assembly of a ball valve on a vessel according to claim 8, characterized in that, S4 includes the following steps: S401: If the distance the two valve seats (102) move is less than the distance the lead screw (3) drives the valve seat (102) to move, then the installation angle of the ball (2) may be deviated. S4011: When the movement distance of the two valve seats (102) is small, or the movement distance of one side is large and the movement distance of the other side is small, the two screws (3) can be directly squeezed, so that the screws (3) drive the valve seats (102) to squeeze inward. If the lower valve shaft (108) is inserted into the lower shaft hole (201) at this time, the ball (2) can be straightened and the correct assembly of the ball (2) can be completed. S4012: If the distance the two valve seats (102) move is greater than the distance the valve seats (102) move driven by the screw (3), then the ball (2) will not fall to the bottom of the mounting groove (109), resulting in the two valve seats (102) moving too far.

Images