Stainless steel welded ball valve

Abstract

The utility model relates to a stainless steel welded ball valve which comprises a valve body and a handle rotationally arranged on the valve body. A limiting groove is formed in the valve body, a locking piece is arranged on the handle in a sliding mode, and the locking piece is used for sliding into the limiting groove. An inserting rod is movably arranged on the locking piece, a plurality of inserting holes for inserting the inserting rod are formed in the handle, and the inserting holes are sequentially formed at intervals in the sliding direction of the locking piece; the locking piece is further provided with an elastic reset piece, and the elastic reset piece is used for pushing the locking piece to be tightly pressed in the limiting groove. The valve body has the advantages that self-locking of the handle is achieved, the probability of misoperation is effectively reduced, and the safety of the valve body is further improved.

Description

Technical Field

[0001] This application relates to the technical field of ball valves, and in particular to a stainless steel welded ball valve. Background Technology

[0002] Currently, stainless steel welded ball valves are a type of valve used in piping systems, primarily for opening or closing fluid flow. These ball valves are typically made of stainless steel, offering excellent corrosion resistance and suitability for various industrial environments. Welded ball valves connect to pipelines via welding, which provides a more secure and reliable seal compared to threaded or flanged connections, reducing the risk of leakage.

[0003] In related technologies, the stem of a stainless steel welded ball valve connects the handle (or actuator) to the ball, transmitting rotational motion and allowing the ball to rotate between the open and closed positions. The stem design should also consider ease of operation and safety, ensuring operators can easily open and close the valve. The stem is primarily threaded onto the valve body. For ease of operation, a handle is often provided on the stem, allowing the operator to rotate the stem. While the handle facilitates opening and closing, if the exposed handle is bumped and rotates, it will directly drive the stem to rotate. Such misoperation can alter the valve's state, leading to safety hazards. Utility Model Content

[0004] This application provides a stainless steel welded ball valve that can achieve self-locking, effectively reducing the probability of misoperation and further improving safety.

[0005] The stainless steel welded ball valve provided in this application adopts the following technical solution:

[0006] A stainless steel welded ball valve includes a valve body and a handle rotatably mounted on the valve body. The valve body has a limiting groove, and a locking element is slidably mounted on the handle, the locking element being used to slide into the limiting groove. A plug rod is movably mounted on the locking element, and the handle has multiple plug holes for inserting the plug rod, the plug holes being spaced apart sequentially along the sliding direction of the locking element. The locking element also has an elastic reset element, which pushes the locking element to press firmly into the limiting groove.

[0007] Preferably, a mounting base is provided on the side wall of the locking member away from the plug rod, one end of the elastic reset member is disposed in the mounting base, the other end of the elastic reset member abuts against the outer side wall of the handle, and the elastic reset member extends and retracts along the sliding direction of the locking member.

[0008] Preferably, the plug rod is fitted with an elastic abutment, which extends and retracts along the sliding direction of the plug rod; one end of the elastic abutment abuts against the plug rod, and the other end of the elastic abutment abuts against the locking member; the elastic abutment is used to push the plug rod to be inserted tightly into the plug hole.

[0009] Preferably, the locking member is provided with a receiving seat, and the plug rod is movably inserted into the receiving seat; the plug rod is provided with a limiting strip located outside the receiving seat, and the receiving seat is provided with a locking groove and an unlocking groove for the limiting strip to be inserted, the depth of the unlocking groove being less than the depth of the locking groove.

[0010] Preferably, a limit post is provided on the valve body, the limit post is located on the rotation path of the handle, and the limit post is used to limit further rotation of the handle.

[0011] Preferably, a pin is movably inserted into the handle, and the valve body is provided with a plurality of pin holes for inserting the pin into the valve body, the pin holes being arranged sequentially at intervals along the rotation direction of the pin.

[0012] Preferably, an elastic rope is connected to the pin, and the end of the elastic rope away from the pin is connected to the handle.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] When the locking element rotates with the handle to align with the limiting groove, it slides into the limiting groove. Under the elastic force of the resilient reset element, the locking element is pressed firmly into the limiting groove. This interlocking action between the locking element and the limiting groove restricts the rotation of the handle, achieving self-locking and effectively reducing the probability of misoperation, thus further enhancing the safety of the valve body. Furthermore, by inserting the plug rod into the appropriate plug hole, the interlocking action between the plug rod and the plug hole effectively restricts the locking element from sliding on the handle, further ensuring the reliability of the interlocking action between the locking element and the limiting groove. To release the handle lock, first remove the plug rod from the plug hole, then remove the locking element from the limiting groove, and finally insert the plug rod into the adjacent plug hole. At this point, the locking element will remain separated from the limiting groove, allowing the handle to rotate normally.

[0015] When the handle is turned to the specified angle, the handle can be held at the specified angle by inserting the pin into the appropriate pin hole and the interlocking of the pin and the pin hole. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0017] Figure 2 yes Figure 1 A schematic diagram of a partial structural explosion;

[0018] Figure 3 yes Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This is an exploded view showing a portion of the structure at the bottom of the handle.

[0020] Explanation of reference numerals in the attached drawings: 1. Valve body; 10. Limiting groove; 11. Pin hole; 2. Handle; 20. Insertion hole; 21. Pin post; 3. Locking element; 30. Insertion rod; 31. Mounting base; 32. Receiving base; 33. Limiting strip; 34. Locking groove; 35. Unlocking groove; 4. Elastic reset element; 5. Elastic abutment element; 6. Limiting post; 7. Elastic rope. Detailed Implementation

[0021] The present application will be further described in detail below with reference to the accompanying drawings.

[0022] This application discloses a stainless steel welded ball valve.

[0023] Reference Figure 1 , Figure 2 The stainless steel welded ball valve includes a valve body 1 and a handle 2 rotatably mounted on the top of the valve body 1. The handle 2 is used to control the rotation of the valve stem inside the valve body 1. The top of the valve body 1 is provided with two limiting grooves 10, and the included angle between the two limiting grooves 10 is 90 degrees. The positions of the limiting grooves 10 correspond to the fully open and fully closed flow channels of the valve body 1, respectively.

[0024] like Figure 2 , Figure 3 As shown, a locking element 3 is slidably mounted on the handle 2, and the bottom of the locking element 3 is used to slide into the limiting groove 10. By interlocking the locking element 3 with the limiting groove 10, the rotation of the handle 2 can be restricted. A receiving seat 32 is fixedly installed on the outer wall of the locking element 3, and a plug-in rod 30 is movably inserted into the receiving seat 32. The handle 2 is provided with a plurality of plug-in holes 20 for inserting the plug-in rod 30 into the handle 2. In this embodiment, there are two plug-in holes 20, and the two plug-in holes 20 are arranged alternately along the sliding direction of the locking element 3.

[0025] When the bottom of the locking member 3 slides into the limiting groove 10, the insertion rod 30 will be aligned with the insertion hole 20 near the valve body 1. By inserting the insertion rod 30 into the insertion hole 20, the locking member 3 can be locked in the limiting groove 10. By removing the locking member 3 from the limiting groove 10 until the locking member 3 is aligned with the insertion hole 20 away from the valve body 1, and then inserting the locking member 3 into the insertion hole 20, the locking member 3 will remain separated from the limiting groove 10. In this state, the handle 2 can rotate normally.

[0026] like Figure 2 , Figure 4 As shown, an elastic abutment 5 is sleeved on the outside of the insertion rod 30 and located within the receiving seat 32. In this embodiment, the elastic abutment 5 is a spring. The elastic abutment 5 extends and retracts along the sliding direction of the insertion rod 30 within the receiving seat 32. One end of the elastic abutment 5 abuts against the inner sidewall of the receiving seat 32, and the other end of the elastic abutment 5 abuts against the insertion rod 30. The elastic abutment 5 is used to push the insertion rod 30 tightly into the insertion hole 20.

[0027] like Figure 3 , Figure 4 As shown, a limiting strip 33 is fixedly installed on the insertion rod 30, located outside the receiving seat 32. The outer wall of the receiving seat 32, away from the locking member 3, is provided with a locking groove 34 and an unlocking groove 35 for the limiting strip 33 to be inserted into the receiving seat 32. The depth of the unlocking groove 35 is less than the depth of the locking groove 34. When the limiting strip 33 is inserted into the locking groove 34, the insertion rod 30 remains inserted into the insertion hole 20. When the limiting strip 33 is inserted into the unlocking groove 35, the insertion rod 30 remains separated from the insertion hole 20.

[0028] like Figure 3 , Figure 4 As shown, a mounting base 31 is fixedly installed on the side wall of the locking member 3 away from the insertion rod 30. Three elastic reset members 4 are installed inside the mounting base 31. In this embodiment, the elastic reset members 4 are springs, which extend and retract along the sliding direction of the locking member 3. One end of the elastic reset member 4 abuts against the mounting base 31, and the other end abuts against the outer side wall of the handle 2. The elastic reset members 4 are used to push the locking member 3 to press firmly within the limiting groove 10.

[0029] like Figure 2 , Figure 4 As shown, a limiting post 6 is fixedly installed on the top of the valve body 1. The limiting post 6 is located on the rotation path of the handle 2 and is used to limit further rotation of the handle 2. A pin 21 is movably inserted into the handle 2. The top of the valve body 1 is provided with multiple pin holes 11 for inserting the pin 21 into the valve body 1. The pin holes 11 are arranged sequentially at intervals along the rotation direction of the pin 21. An elastic rope 7 is fixedly connected to the pin 21. The elastic rope 7 has elastic deformation capability. The end of the elastic rope 7 away from the pin 21 is connected and fixed to the handle 2. When the handle 2 is rotated to a specified angle, by inserting the pin 21 into the appropriate pin hole 11, the handle 2 can be held at the specified angle through the mutual insertion of the pin 21 and the pin hole 11. The pin 21 is connected to the handle 2 by the elastic rope 7, thereby preventing the pin 21 from detaching from the handle 2 and being lost.

[0030] The implementation principle is as follows: When the locking member 3 rotates with the handle 2 to align with the limiting groove 10, the locking member 3 is slid into the limiting groove 10. At this time, the locking member 3 will be pressed into the limiting groove 10 under the elastic force of the elastic reset member 4. Through the mutual insertion and cooperation between the locking member 3 and the limiting groove 10, the rotation of the handle 2 can be restricted, realizing the self-locking of the handle 2, effectively reducing the probability of misoperation, and further improving the safety of the valve body 1. In addition, by inserting the plug rod 30 into the plug hole 20 at the appropriate position, the mutual insertion and cooperation between the plug rod 30 and the plug hole 20 can effectively restrict the sliding of the locking member 3 on the handle 2, thereby further ensuring the reliability of the locking member 3 when it is inserted into the limiting groove 10. When it is necessary to unlock the handle 2, first remove the plug rod 30 from the plug hole 20, then remove the locking piece 3 from the limiting groove 10, and finally insert the plug rod 30 into the adjacent plug hole 20. At this time, the locking piece 3 will remain separated from the limiting groove 10, and the handle 2 can rotate normally.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stainless steel welded ball valve, comprising a valve body (1) and a handle (2) rotatably disposed on the valve body (1); characterized in that: The valve body (1) is provided with a limiting groove (10), and the handle (2) is slidably provided with a locking member (3), which is used to slide into the limiting groove (10); the locking member (3) is movably provided with a plug rod (30), and the handle (2) is provided with a plurality of plug holes (20) for the plug rod (30) to be inserted, which are arranged sequentially at intervals along the sliding direction of the locking member (3); the locking member (3) is also provided with an elastic reset member (4), which is used to push the locking member (3) to press it into the limiting groove (10).

2. The stainless steel welded ball valve according to claim 1, characterized in that: The locking member (3) has a mounting base (31) on the side wall away from the plug rod (30). One end of the elastic reset member (4) is located in the mounting base (31), and the other end of the elastic reset member (4) abuts against the outer wall of the handle (2). The elastic reset member (4) extends and retracts along the sliding direction of the locking member (3).

3. The stainless steel welded ball valve according to claim 2, characterized in that: The plug rod (30) is fitted with an elastic abutment (5), which extends and retracts along the sliding direction of the plug rod (30); one end of the elastic abutment (5) abuts against the plug rod (30), and the other end of the elastic abutment (5) abuts against the locking member (3); the elastic abutment (5) is used to push the plug rod (30) to be inserted into the plug hole (20).

4. The stainless steel welded ball valve according to claim 1, characterized in that: The locking member (3) is provided with a receiving seat (32), and the plug rod (30) is movably inserted into the receiving seat (32); the plug rod (30) is provided with a limiting strip (33) located outside the receiving seat (32), and the receiving seat (32) is provided with a locking groove (34) and an unlocking groove (35) for the limiting strip (33) to be inserted, and the depth of the unlocking groove (35) is less than the depth of the locking groove (34).

5. The stainless steel welded ball valve according to claim 1, characterized in that: The valve body (1) is provided with a limit post (6), which is located on the rotation path of the handle (2) and is used to limit the further rotation of the handle (2).

6. The stainless steel welded ball valve according to claim 5, characterized in that: The handle (2) is movably inserted with a pin (21), and the valve body (1) is provided with a plurality of pin holes (11) for inserting the pin (21) into the valve body (1). The pin holes (11) are arranged in sequence at intervals along the rotation direction of the pin (21).

7. The stainless steel welded ball valve according to claim 6, characterized in that: An elastic rope (7) is connected to the pin (21), and the end of the elastic rope (7) away from the pin (21) is connected to the handle (2).

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