Integral flange ball valve connecting piece
The integral flange ball valve connector addresses the need for separate valve stems by enabling flexible switching between manual and automated operation through a unified valve stem design, improving adaptability and durability while reducing costs.
Patent Information
- Application Number
- CN202421167904.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-27
AI Technical Summary
Existing flange ball valves require separate valve stems for handle and pneumatic actuator operation, necessitating different production and limiting flexibility in switching between manual and automated modes.
An integral flange ball valve connector with a mounting platform, positioning grooves, and internal threaded holes allows for a single valve stem to be operated by either a handle or a pneumatic actuator, using hidden screws and limit blocks for stable rotation, and a docking platform for pneumatic actuator connection.
Enables seamless switching between handle and pneumatic actuator operation, improving adaptability, simplifying installation and operation, enhancing durability, and reducing costs by allowing shared components.
Smart Images

Figure CN222277639U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flange ball valves, and in particular relates to an integral flange ball valve connector. Background Art
[0002] Both the flange ball valve pushed by the handle and the flange ball valve pushed by the pneumatic actuator are widely used; in the traditional technology, the valve stem of the flange ball valve pushed by the handle is installed in conjunction with the handle, and the valve stem of the flange ball valve pushed by the pneumatic actuator is used in conjunction with the pneumatic actuator. The valve stems of the flange ball valve pushed by the handle and the flange ball valve pushed by the pneumatic actuator are not the same valve stem, and there are differences in structure, so that the handle and the actuator cannot be adapted to the same valve stem at the same time. In this way, two valve stems of different specifications need to be produced during production, and the flange ball valve cannot be flexibly switched, and it cannot be conveniently switched between the flange ball valve pushed by the handle or the flange ball valve pushed by the pneumatic actuator. Utility Model Content
[0003] In order to make up for the deficiencies of the prior art, the utility model provides an integral flange ball valve connector.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] An integral flange ball valve connector includes a mounting platform, which is integrally formed at the upper end of the valve body and has a hole groove for the valve stem to pass through at the middle position of the mounting platform, two symmetrical positioning grooves are provided on both sides of the top of the valve stem and an internal threaded hole is provided at the center of the valve stem, and an annular boss is provided on the top of the mounting platform and is located outside the hole groove. Two limit blocks A are symmetrically provided on the top of the annular boss.
[0006] Preferably, the top of the valve stem is threadedly connected to the handle via a hidden screw A, and the handle is provided with a mounting hole for the hidden screw A to pass through. After the hidden screw A passes through the mounting hole, it is threadedly connected to the internal threaded hole to fix the handle to the top of the valve stem.
[0007] Preferably, the handle is provided with two insertion rods A inserted into the positioning grooves, and the handle is provided with two limit blocks B which abut against the annular boss and move along the arc trajectory between the two limit blocks A, and the moving stroke of the limit blocks is limited by the limit blocks A;
[0008] The valve core in the valve body is rotated by rotating the handle and the valve stem, thereby realizing the on / off operation of the flange ball valve.
[0009] The working principle of this integral flange ball valve connector is to drive the valve stem to rotate through the handle, thereby driving the valve core to rotate in the valve body to realize the opening and closing operation of the valve. When the handle rotates, the plug rod A plays a positioning role in the positioning groove, and the limit block B moves along the arc trajectory between the limit blocks A above the annular boss, and the limit block A limits its moving stroke to ensure the stable and accurate operation of the valve.
[0010] Preferably, the integral flange ball valve connector also includes a docking platform, which includes an annular sleeve and a mounting panel integrally formed with the annular sleeve and installed in cooperation with the pneumatic actuator, and four plug-ins inserted into four slots on the mounting platform are arranged in an equidistant manner in a ring at the bottom of the docking platform, and the plug-ins are connected to adjacent slots through bolt threads.
[0011] Preferably, a docking boss A which is limited and abutted against the top of the annular boss and a docking boss B which is limited and abutted against the top of the two limit blocks A are provided on the inner side of the annular sleeve.
[0012] Preferably, a connecting piece is sleeved on the outer side of the top of the valve stem, which passes through an annular sleeve and a mounting panel. The connecting piece is threadedly connected to the internal threaded hole on the valve stem by a hidden screw B passing through the connecting piece, thereby fixing the connecting piece to the outer side of the top of the valve stem. The connecting piece is used in conjunction with a pneumatic actuator, and the pneumatic actuator drives the connecting piece and the valve stem to rotate to rotate the valve core in the valve body, thereby realizing the switching operation of the flange ball valve.
[0013] When the flange ball valve needs to be opened or closed, the pneumatic actuator drives the valve stem to rotate through the connector. The connector passes through the annular sleeve and the mounting panel and is connected to the outer side of the top of the valve stem. The hidden screw B on the connector is threadedly connected to the internal threaded hole on the valve stem to fix the connector on the outer side of the top of the valve stem.
[0014] When the pneumatic actuator pushes the piston, the piston compresses the air and generates thrust, which is transmitted to the valve stem through the connector. When the valve stem rotates, the valve core also rotates, realizing the opening and closing operation of the flange ball valve.
[0015] The structural design of the integral flange ball valve connector makes the valve installation and operation easier. The docking platform includes an annular sleeve and a mounting panel, which can be installed in conjunction with the pneumatic actuator to easily connect and drive the valve. The four plugs arranged in an equidistant manner in the bottom ring are inserted into the slots on the mounting platform through bolt thread connection, which enhances the stability of the docking platform and makes the docking platform more stable after being connected with the pneumatic actuator.
[0016] Preferably, the connecting piece includes a connecting sleeve that is sleeved on the outside of the top of the valve stem and a square shaft integrally formed on the top of the connecting sleeve. The inner side of the connecting sleeve is provided with an insert rod B that is plugged into a matching positioning groove. The square shaft is used in conjunction with the output end of the pneumatic actuator through an octagonal sleeve.
[0017] The square shaft is used in conjunction with the output end of the pneumatic actuator to effectively transmit the actuator's rotational motion to the valve stem.
[0018] Preferably, the installation panel is provided with waist holes for docking with the pneumatic actuator, which can be suitable for installing pneumatic actuators of different sizes.
[0019] Compared with the prior art, the technical effects and advantages of the utility model are:
[0020] The integral flange ball valve connector can drive the valve stem to rotate through the handle or use the pneumatic actuator to drive the valve stem to rotate, thereby driving the valve core to rotate in the valve body to realize the switch operation of the valve; when the flange ball valve needs to be opened or closed, the pneumatic actuator will drive the valve stem to rotate through the connector. The connector passes through the annular sleeve and the mounting panel, and is sleeved with the outer side of the top of the valve stem. The hidden screw B on the connector is threadedly connected with the internal threaded hole on the valve stem to fix the connector on the outer side of the top of the valve stem. When the pneumatic actuator pushes the piston, the piston compresses the air and generates thrust, which is transmitted to the valve stem through the connector. When the valve stem rotates, the valve core will also rotate, realizing the switch operation of the flange ball valve.
[0021] When the handle is needed for operation, the pneumatic actuator can be removed, then the connector, and then the docking platform. At this time, the valve stem can be driven by the handle to control the rotation of the valve core to realize the switch operation of the flange ball valve.
[0022] In summary, the integral flange ball valve connector can realize the back and forth switching between the handle and the pneumatic actuator through a simple switching operation, which is very convenient to use. This integral flange ball valve connector can improve the adaptability of the ball valve, simplify the installation and operation process, improve durability, and is suitable for use under various working conditions. At the same time, it also has the advantage of being applicable to the connection of the handle and the pneumatic actuator at the same time, effectively reducing the use cost of the ball valve. Therefore, this integral flange ball valve connector deserves to be widely promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the handle of the utility model from the first perspective;
[0025] Figure 3This is a structural schematic diagram of the handle of the utility model from a second viewing angle;
[0026] Figure 4 This is a schematic diagram of the structure of the handle of the utility model being installed on the valve body;
[0027] Figure 5 This is a structural schematic diagram of the docking platform of the utility model from the first perspective;
[0028] Figure 6 This is a structural schematic diagram of the second viewing angle of the docking platform of the utility model;
[0029] Figure 7 This is a schematic structural diagram of the connector of the utility model from a first viewing angle;
[0030] Figure 8 This is a structural schematic diagram of the connector of the utility model from a second viewing angle;
[0031] Fig. 9 This is a structural schematic diagram of the utility model in which the docking platform and the connecting piece are installed on the valve body;
[0032] Fig.10 For this utility model Fig. 9 Exploded diagram of .
[0033] In the figure: 1. Installation platform; 2. Valve body; 3. Valve stem; 4. Hole groove; 5. Positioning groove; 6. Internal threaded hole; 7. Annular boss; 8. Limit block A; 9. Slot; 10. Hidden screw A; 11. Handle; 12. Installation hole; 13. Insert rod A; 14. Limit block B; 15. Docking platform; 16. Annular sleeve; 17. Installation panel; 18. Insert block; 19. Bolt; 20. Docking boss A; 21. Docking boss B; 22. Waist hole; 23. Connector; 24. Hidden screw B; 25. Connecting sleeve; 26. Square shaft; 27. Insert rod B. DETAILED DESCRIPTION
[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0035] Example 1
[0036] like Figure 1As shown, an integral flange ball valve connector includes a mounting platform 1, which is integrally formed at the upper end of a valve body 2 and has a hole groove 4 for a valve stem 3 to pass through at the middle position of the mounting platform 1, two positioning grooves 5 are symmetrically provided on both sides of the top of the valve stem 3 and an internal threaded hole 6 is provided at the center position of the valve stem 3, an annular boss 7 is provided on the top of the mounting platform 1 and is located outside the hole groove 4, and two limit blocks A8 are symmetrically provided on the top of the annular boss 7.
[0037] The mounting platform 1 is a component on the upper end of the valve body 2. It is integrally formed and provides a mounting point for the valve stem 3. The hole 4 in the middle is used to allow the valve stem 3 to pass through so that the valve stem 3 can be connected to the inside of the valve body 2. The valve stem 3 is a component that connects the valve core inside the valve body 2 and the external operating force. Two positioning grooves 5 are symmetrically opened on both sides of the top of the valve stem 3. These positioning grooves 5 are used to align the limit blocks with the handle 11 or the mounting parts of the pneumatic actuator to ensure the stability of the valve stem 3 during operation. An internal threaded hole 6 is opened at the center of the valve stem 3, which is used to connect with an external operating device (such as the handle 11 or the connecting part 23 of the pneumatic actuator).
[0038] The annular boss 7 is located on the top of the mounting platform 1. It provides a stable support point for the valve stem 3 and also provides a reference for limiting during manual operation. The limit block A8 is set on the top of the annular boss 7 to ensure that the valve stem 3 is in the correct position during operation and prevent excessive rotation.
[0039] Example 2
[0040] like Figure 1-4 As shown, an integral flange ball valve connector includes a mounting platform 1, the mounting platform 1 is integrally formed at the upper end of the valve body 2, and a hole groove 4 for matching the valve stem 3 to pass through is opened at the middle position of the mounting platform 1, two positioning grooves 5 are symmetrically opened on both sides of the top of the valve stem 3, and an internal threaded hole 6 is opened at the center position of the valve stem 3, and an annular boss 7 located outside the hole groove 4 is provided on the top of the mounting platform 1, and two limit blocks A8 are symmetrically provided on the top of the annular boss 7;
[0041] The top of the valve stem 3 is threadedly connected to the handle 11 via a hidden screw A10. The handle 11 is provided with a mounting hole 12 for the hidden screw A10 to penetrate. The hidden screw A10 penetrates the mounting hole 12 and is threadedly connected to the internal threaded hole 6 to fix the handle 11 to the top of the valve stem 3.
[0042] The handle 11 is provided with two insertion rods A13 inserted into the positioning grooves 5, and the handle 11 is provided with two limit blocks B14 which abut against the annular boss 7 and move along the arc trajectory between the two limit blocks A8, and the moving stroke of the limit blocks is limited by the limit blocks A8;
[0043] The valve core in the valve body 2 is rotated by rotating the handle 11 and rotating the valve stem 3, thereby realizing the opening and closing operation of the flange ball valve.
[0044] The working principle of the integral flange ball valve connector 23 is to drive the valve stem 3 to rotate through the handle 11, thereby driving the valve core to rotate in the valve body 2 to realize the opening and closing operation of the valve. When the handle 11 rotates, the plug A13 plays a positioning role in the positioning groove 5, and the limit block B14 moves along the arc track between the limit blocks A8 above the annular boss 7, and its moving stroke is limited by the limit block A8 to ensure the stable and accurate operation of the valve.
[0045] The advantage of this integral flange ball valve connector 23 is that the mounting platform 1 is integrally formed, has a simple and compact structure, is easy to operate, has high durability, can effectively control the flow of the medium, and is suitable for use under various working conditions. At the same time, through the fixing design of the internal threaded hole 6 and the hidden screw A10, the handle 11 can be firmly fixed to the top of the valve stem 3, avoiding the problem of the handle 11 loosening or falling off during use, and improving the stability and reliability of the overall structure.
[0046] The handle 11 is manually operated by connecting to the hidden screw A10 on the top of the valve stem 3. The internal plug rod A13 and the limit block B14 are used to dock with the limit block A8 and the annular boss 7 on the mounting platform 1 to achieve position control of the handle 11. The limit blocks A8 and B14 are used to limit the movement of the handle 11 and the valve stem 3 to ensure the stability and accuracy of the valve during operation. The annular boss 7 provides a support point for the valve stem 3 and achieves stability during valve operation by cooperating with the limit blocks A8 and B.
[0047] The valve stem 3 is driven to rotate by rotating the handle 11, so that the valve core rotates in the valve body 2, thereby completing the opening and closing operation of the flange ball valve. The overall structure is simple, compact, and easy to operate, while ensuring the stability and accuracy of the valve operation. The design of the hidden screw A10 and the setting of the limit block ensure that the handle 11 is firmly fixed, avoiding the problem of loosening or falling off during use. The design and function of the integral flange ball valve connector 23 make the installation and operation of the valve more convenient, and improve the stability and reliability of the overall structure.
[0048] Example 3
[0049] like Figure 1 , 5-10, an integral flange ball valve connector, comprising a mounting platform 1, the mounting platform 1 is integrally formed at the upper end of the valve body 2 and a hole groove 4 for the valve stem 3 to pass through is provided at the middle position of the mounting platform 1, two locating grooves 5 are symmetrically provided on both sides of the top of the valve stem 3 and an internal threaded hole 6 is provided at the center of the valve stem 3, an annular boss 7 is provided on the top of the mounting platform 1 and is located outside the hole groove 4, and two limit blocks A8 are symmetrically provided on the top of the annular boss 7;
[0050] The integral flange ball valve connector 23 also includes a docking platform 15, which includes an annular sleeve 16 and a mounting panel 17 integrally formed with the annular sleeve 16 and mounted in cooperation with the pneumatic actuator. The bottom of the docking platform 15 is provided with four plug blocks 18 arranged in an equidistant manner in a ring shape and inserted into four slots 9 on the mounting platform 1. The plug blocks 18 are threadedly connected to adjacent slots 9 via bolts 19.
[0051] The inner side of the annular sleeve 16 is provided with a docking boss A20 which is limited and abutted against the top of the annular boss 7 and a docking boss B21 which is limited and abutted against the top of the two limit blocks A8.
[0052] The outer side surface of the top of the valve stem 3 is sleeved with a connecting piece 23 that passes through the annular sleeve 16 and the mounting panel 17. The connecting piece 23 is threadedly connected to the internal threaded hole 6 on the valve stem 3 by a hidden screw B24 passing through it, thereby fixing the connecting piece 23 to the outer side of the top of the valve stem 3. The connecting piece 23 is used in conjunction with a pneumatic actuator. The pneumatic actuator drives the connecting piece 23 and the valve stem 3 to rotate to rotate the valve core in the valve body 2, thereby realizing the switching operation of the flange ball valve.
[0053] When the flange ball valve needs to be opened or closed, the pneumatic actuator drives the valve stem 3 to rotate through the connector 23. The connector 23 passes through the annular sleeve 16 and the mounting panel 17, and is sleeved with the outer side of the top of the valve stem 3. The hidden screw B24 on the connector 23 is threadedly connected with the internal threaded hole 6 on the valve stem 3, fixing the connector 23 on the outer side of the top of the valve stem 3.
[0054] When the pneumatic actuator pushes the piston, the piston compresses the air and generates thrust, which is transmitted to the valve stem 3 through the connecting piece 23. When the valve stem 3 rotates, the valve core also rotates, realizing the opening and closing operation of the flange ball valve.
[0055] The structural design of the integral flange ball valve connector makes the valve installation and operation easier. The docking platform 15 includes an annular sleeve 16 and a mounting panel 17, which are installed in conjunction with the pneumatic actuator to conveniently connect and drive the valve. The four plugs 18 arranged in an equidistant manner in the bottom ring are threadedly connected by bolts 19 and inserted into the slots 9 on the mounting platform 1, which enhances the stability of the docking platform 15 and makes the docking platform 15 more stable after being connected with the pneumatic actuator.
[0056] The connecting member 23 includes a connecting sleeve 25 which is sleeved on the outside of the top of the valve stem 3 and a square shaft 26 which is integrally formed on the top of the connecting sleeve 25. The inner side of the connecting sleeve 25 is provided with an insert rod B27 which is plugged into the positioning groove 5. The square shaft 26 is used in conjunction with the output end of the pneumatic actuator through an octagonal sleeve.
[0057] The connecting sleeve 25 is sleeved on the outside of the top of the valve stem 3, and the square shaft 26 is integrally formed on the top of the connecting sleeve 25. This design ensures that when the pneumatic actuator pushes the piston, the piston compresses the air and generates thrust, which directly drives the rotation of the square shaft 26, thereby transmitting power to the valve stem 3. The square shaft 26 is used in conjunction with the output end of the pneumatic actuator to effectively transmit the rotation of the actuator to the valve stem 3.
[0058] The inner side of the connecting sleeve 25 is provided with an insert rod B27 that is inserted into the positioning groove 5, which helps the insert rod B27 to fit closely with the positioning groove 5 when the valve stem 3 rotates, thereby ensuring the stability and accuracy of the valve stem 3. This design can prevent the valve stem 3 from sliding unnecessarily during operation and improve the accuracy of the operation.
[0059] The mounting panel 17 is provided with a waist hole 22 for docking with the pneumatic actuator, and is suitable for mounting pneumatic actuators of different sizes and specifications.
[0060] The docking platform 15 includes an annular sleeve 16 and a mounting panel 17, which are used to connect the pneumatic actuator. The plug block 18 is threadedly connected and inserted into the slot 9 of the mounting platform 1 by the bolt 19, which enhances the stability of the docking platform 15. The connecting piece 23 is composed of a connecting sleeve 25 and a square shaft 26. The connecting sleeve 25 is sleeved on the outer side of the top of the valve stem 3 and fixed on the valve stem 3 by a hidden screw B24. The square shaft 26 is connected to the output end of the pneumatic actuator through an octagonal sleeve to transmit the rotary motion of the actuator to the valve stem 3. The docking boss A20 and the docking boss B21 are arranged on the annular sleeve 16 for position restriction and stabilization of the movement of the valve stem 3. The inner side of the connecting sleeve 25 is provided with a plug rod B27 that is inserted into the positioning groove 5 to ensure the stability and accuracy of the valve stem 3 during rotation. The pneumatic actuator controls the rotation of the valve core in the valve body 2 by driving the connecting piece 23 and the valve stem 3 to rotate, thereby opening or closing the flange ball valve.
[0061] In addition, when the pneumatic actuator is not used as a driving element and is converted to manual operation, the pneumatic actuator is now removed, and then the connector 23 is removed, and then the docking platform 15 is removed. The design of the top structure of the valve stem 3 and the mounting platform 1 can control the rotation of the valve core by rotating the valve stem 3 through the handle 11 or the pneumatic actuator, thereby realizing the switching operation of the flange ball valve. The integral flange ball valve connector 23 can be used for both the handle 11 and the pneumatic actuator connection, which can effectively reduce the use cost of the ball valve and improve the adaptability of the ball valve, and is worthy of wide promotion and application.
[0062] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An integral flange ball valve connector, characterized in that: The valve body (2) comprises a mounting platform (1), wherein the mounting platform (1) is integrally formed at the upper end of the valve body (2) and a hole groove (4) is provided at the middle position of the mounting platform (1) for the valve stem (3) to pass through, two positioning grooves (5) are symmetrically provided on both sides of the top of the valve stem (3) and an internal threaded hole (6) is provided at the center position of the valve stem (3), and an annular boss (7) is provided at the top of the mounting platform (1) and is located outside the hole groove (4), and two limit blocks A (8) are symmetrically provided at the top of the annular boss (7).
2. The integral flange ball valve connector according to claim 1, characterized in that: The top of the valve stem (3) is threadedly connected to the handle (11) via a hidden screw A (10); the handle (11) is provided with a mounting hole (12) for the hidden screw A (10) to pass through; the hidden screw A (10) passes through the mounting hole (12) and is threadedly connected to the internal threaded hole (6) to fix the handle (11) to the top of the valve stem (3).
3. The integral flange ball valve connector according to claim 2, characterized in that: The handle (11) is provided with two insertion rods A (13) inserted into the positioning grooves (5), and the handle (11) is provided with two limit blocks B (14) which abut against the annular boss (7) and move along an arc trajectory between the two limit blocks A (8), and the moving stroke of the limit blocks is limited by the limit blocks A (8); The valve core in the valve body (2) is rotated by rotating the handle (11) and the valve stem (3) to realize the opening and closing operation of the flange ball valve.
4. The integral flange ball valve connector according to claim 1, characterized in that: The invention also comprises a docking platform (15), wherein the docking platform (15) comprises an annular sleeve (16) and a mounting panel (17) integrally formed with the annular sleeve (16) and mounted in cooperation with the pneumatic actuator. Four insert blocks (18) are arranged in an annular manner and equidistantly at the bottom of the docking platform (15), and are inserted into four slots (9) on the mounting platform (1). The insert blocks (18) are threadedly connected to adjacent slots (9) via bolts (19).
5. The integral flange ball valve connector according to claim 4, characterized in that: The inner side of the annular sleeve (16) is provided with a docking boss A (20) which is limitedly pressed against the top of the annular boss (7) and a docking boss B (21) which is limitedly pressed against the tops of the two limit blocks A (8).
6. The integral flange ball valve connector according to claim 5, characterized in that: The outer side surface of the top of the valve stem (3) is sleeved with a connecting piece (23) which passes through an annular sleeve (16) and a mounting panel (17). The connecting piece (23) is threadedly connected to the internal threaded hole (6) on the valve stem (3) by a hidden screw B (24) passing through the connecting piece (23), thereby fixing the connecting piece (23) to the outer side of the top of the valve stem (3). The connecting piece (23) is used in conjunction with a pneumatic actuator. The pneumatic actuator drives the connecting piece (23) and the valve stem (3) to rotate, thereby rotating the valve core in the valve body (2), thereby realizing the switching operation of the flange ball valve.
7. The integral flange ball valve connector according to claim 6, characterized in that: The connecting member (23) comprises a connecting sleeve (25) which is sleeved on the outer side of the top of the valve stem (3) and a square shaft (26) which is integrally formed on the top of the connecting sleeve (25); the inner side of the connecting sleeve (25) is provided with an insert rod B (27) which is inserted into the positioning groove (5); the square shaft (26) is used in conjunction with the output end of the pneumatic actuator through an octagonal sleeve.
8. The integral flange ball valve connector according to claim 6, characterized in that: The installation panel (17) is provided with a waist hole (22) for docking with the pneumatic actuator.