A ball valve stem

Abstract

This utility model relates to the field of valve stem technology, specifically a ball valve stem, including a valve stem body with an internal cavity. A rotating rod is threaded onto the upper surface of the valve stem body, and the bottom end of the rotating rod extends into the cavity. When assembling the valve stem body and the valve ball, the bottom end of the valve stem body is inserted into a slot. Rotating the rotating rod clockwise moves a lifting block downwards, which in turn pushes a transmission rod. The transmission rod then pushes a locking block into a slot. During this process, a spring is compressed, thus locking the valve stem body and the valve ball. To remove the valve stem body, rotating the rotating rod counterclockwise moves the lifting block upwards, which pulls the locking block. Simultaneously, with the spring's rebound assisting the push, the locking block retracts into the valve stem body, leaving the slot and releasing the locking connection between the valve stem body and the valve ball. This allows for easy removal of the valve stem body. If one part is damaged, the entire valve stem body does not need to be replaced, saving costs.

Description

Technical Field

[0001] This utility model relates to the field of valve stem technology, specifically to a ball valve stem. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (the ball) is driven by the valve stem and rotates around the valve's axis. It can also be used for fluid regulation and control. In pipelines, ball valves are mainly used for shut-off, distribution, and changing the flow direction of media. They require only a 90-degree rotation and a very small torque to achieve a tight seal. Ball valves are best suited for on / off and shut-off applications and are widely used in industries such as petroleum refining, long-distance pipelines, chemical, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel. Currently, some ball valves and valve stems are generally not detachable, and both ball valves and valve stems are easily damaged. When one of them is damaged, both need to be replaced, which increases the cost of use. Therefore, a new ball valve stem is proposed. Utility Model Content

[0003] The purpose of this invention is to provide a ball valve stem to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a ball valve stem, comprising a valve stem body, the valve stem body having an internal cavity, a rotating rod threadedly connected to the upper surface of the valve stem body, the bottom end of the rotating rod extending into the cavity, a valve ball connected to the bottom end of the valve stem body, a lifting block rotatably connected to the bottom end of the rotating rod via a bearing, two locking blocks symmetrically slidably connected to the bottom of the outer sidewall of the valve stem body, a slot formed on the upper surface of the valve ball, the bottom end of the valve stem body inserted into the inner sidewall of the slot, two symmetrical slots formed on the inner sidewall of the slot, two transmission rods symmetrically hinged to the lower surface of the lifting block, the bottom end of the transmission rod hinged to the outer sidewall of the locking block, two movable plates symmetrically fixedly connected to the outer sidewall of the locking block, two springs symmetrically fixedly connected between the movable plates and the inner sidewall of the valve stem body, a block fixedly connected to the top of the outer sidewall of the valve stem body, a tray fixedly connected to the bottom of the outer sidewall of the block, and a handle connected to the outer sidewall of the block.

[0005] As a further preferred embodiment of this technical solution: the upper surface of the throttle is provided with a square groove, the throttle is inserted into the block through the square groove, a pin is threaded onto the throttle, and a pin hole is provided on the outer side wall of the block.

[0006] As a further preferred embodiment of this technical solution: a knob is fixedly connected to one end of the pin.

[0007] As a further preferred embodiment of this technical solution, the outer side wall of the lifting block is symmetrically and fixedly connected with two guide bars.

[0008] As a further preferred embodiment of this technical solution: two guide grooves are symmetrically formed on the inner sidewall of the cavity, and the outer sidewall of the guide strip is slidably connected to the inner sidewall of the guide groove.

[0009] As a further preferred embodiment of this technical solution: two positioning strips are symmetrically fixedly connected to the lower surface of the valve stem, and two positioning grooves are symmetrically opened on the inner bottom wall of the slot.

[0010] As a further preferred embodiment of this technical solution: the upper surface of the rotating rod is provided with an internal hexagonal hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, when assembling the valve stem and valve ball, the bottom end of the valve stem is inserted into the slot. Rotating the rotating rod clockwise moves the lifting block downwards, which in turn pushes the transmission rod. The transmission rod then pushes the locking block into the slot. During this process, the spring is compressed, thus completing the connection and locking between the valve stem and the valve ball. When it is necessary to remove the valve stem, rotating the rotating rod counterclockwise moves the lifting block upwards, and the transmission rod pulls the locking block. Simultaneously, with the spring's rebound assisting push, the locking block retracts into the valve stem and leaves the slot, releasing the connection and locking between the valve stem and the valve ball. The valve stem can then be easily removed. If one of them is damaged, it is not necessary to replace both, which helps save costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 In this utility model Figure 2 Enlarged view of the structure of area B; Figure 4 This is a partial cross-sectional view of the valve stem body in this utility model; Figure 5 In this utility model Figure 4 Enlarged view of the C-region structure; Figure 6 This is a schematic diagram of the structure of the square block and the tray in this utility model; Figure 7 This is a schematic diagram of the structure of the guide strip and guide groove in this utility model; Figure 8 This is a schematic diagram of the structure of the valve stem and the positioning strip in this utility model; Figure 9 This is a cross-sectional view of the valve ball in this utility model; Figure 10 In this utility model Figure 1Enlarged view of the structure of area A; Figure 11 This is a schematic diagram of the transfer handle and square groove of this utility model.

[0013] In the picture: 1. Valve stem body; 2. Valve ball; 3. Cavity; 4. Rotating rod; 5. Lifting block; 6. Locking block; 7. Slot; 8. Locking groove; 9. Transmission rod; 10. Movable plate; 11. Spring; 12. Square block; 13. Tray; 14. Turning handle; 15. Square groove; 16. Pin rod; 17. Pin hole; 18. Knob; 19. Guide strip; 20. Guide groove; 21. Positioning strip; 22. Positioning groove; 23. Internal hexagonal hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0016] Please see Figure 1-11This utility model provides a technical solution: a ball valve stem, including a valve stem body 1, with a cavity 3 inside the valve stem body 1. A rotating rod 4 is threadedly connected to the upper surface of the valve stem body 1, and the bottom end of the rotating rod 4 extends into the cavity 3. A valve ball 2 is connected to the bottom end of the valve stem body 1. A lifting block 5 is rotatably connected to the bottom of the rotating rod 4 via a bearing. Two locking blocks 6 are symmetrically slidably connected to the bottom of the outer side wall of the valve stem body 1. A slot 7 is opened on the upper surface of the valve ball 2, and the bottom end of the valve stem body 1 is inserted into the inner side wall of the slot 7. Two locking grooves 8 are symmetrically opened on the inner side wall of the slot 7. Two transmission rods 9 are symmetrically hinged to the lower surface of the lifting block 5, and the bottom ends of the transmission rods 9 are hinged to the outer side wall of the locking block 6. Two movable plates 10 are symmetrically fixedly connected to the outer side wall of the locking block 6. Two springs 11 are symmetrically fixedly connected between the movable plates 10 and the inner side wall of the valve stem body 1. A block 12 is fixedly connected to the top of the wall, a tray 13 is fixedly connected to the bottom of the outer wall of the block 12, and a handle 14 is connected to the outer wall of the block 12. When assembling the valve stem body 1 and the valve ball 2, the bottom end of the valve stem body 1 is inserted into the slot 7. The rotating rod 4 is rotated clockwise to move the lifting block 5 downward. The lifting block 5 pushes the transmission rod 9, and the transmission rod 9 pushes the locking block 6 to move into the slot 8. During this process, the spring 11 is compressed, thereby completing the connection and locking between the valve stem body 1 and the valve ball 2. When the valve stem body 1 needs to be removed, the rotating rod 4 is rotated counterclockwise to move the lifting block 5 upward. The transmission rod 9 pulls the locking block 6. At the same time, under the spring rebound assist push, the locking block 6 retracts into the valve stem body 1 and leaves the slot 8, releasing the connection and locking between the valve stem body 1 and the valve ball 2. The valve stem body 1 can be removed smoothly. When one of them is damaged, it is not necessary to replace them together, which helps to save costs.

[0017] In this embodiment, specifically: a square groove 15 is provided on the upper surface of the handle 14, and the handle 14 is inserted into the block 12 through the square groove 15. A pin 16 is threaded onto the handle 14, and a pin hole 17 is provided on the outer side wall of the block 12. When installing the handle 14, the handle 14 is inserted into the block 12, and the pin 16 is rotated clockwise to insert it into the pin hole 17, which can lock the connection between the valve stem body 1 and the handle 14. Similarly, the handle 14 can be quickly removed by simply loosening the pin 16.

[0018] In this embodiment, specifically: a knob 18 is fixedly connected to one end of the pin 16; this facilitates turning the pin 16.

[0019] In this embodiment, specifically: two guide bars 19 are symmetrically fixedly connected to the outer side wall of the lifting block 5; so that the guide bars 19 and the lifting block 5 can move synchronously.

[0020] In this embodiment, specifically: two guide grooves 20 are symmetrically opened on the inner sidewall of the cavity 3, and the outer sidewall of the guide bar 19 is slidably connected to the inner sidewall of the guide groove 20; the lifting block 5 and the guide bar 19 slide up and down together, which can prevent the lifting block 5 from rotating.

[0021] In this embodiment, specifically: two positioning strips 21 are symmetrically fixedly connected to the lower surface of the valve stem body 1, and two positioning grooves 22 are symmetrically opened on the inner bottom wall of the slot 7; when connecting the valve stem body 1 and the valve ball 2, the positioning strips 21 are inserted into the positioning grooves 22 to quickly achieve precise positioning between the two, so that the positions of the locking block 6 and the locking groove 8 are relative.

[0022] In this embodiment, specifically: an internal hexagonal hole 23 is provided on the upper surface of the rotating rod 4; this facilitates the rotation of the rotating rod 4 by means of the internal hexagonal hole 23 and an external wrench.

[0023] The working principle of this utility model is as follows: When assembling the valve stem body 1 and the valve ball 2, the bottom end of the valve stem body 1 is inserted into the slot 7. Rotating the rotating rod 4 clockwise causes the lifting block 5 to move downwards. The lifting block 5 pushes the transmission rod 9, and the transmission rod 9 pushes the locking block 6 into the slot 8. During this process, the spring 11 is compressed, thus completing the connection and locking between the valve stem body 1 and the valve ball 2. When it is necessary to remove the valve stem body 1, rotating the rotating rod 4 counterclockwise causes the lifting block 5 to move upwards. The transmission rod 9 pulls the locking block 6, and simultaneously, the spring 11 is compressed. Under the spring-assisted pushing action of 11, the locking block 6 retracts into the valve stem body 1 and leaves the locking groove 8, releasing the connection lock between the valve stem body 1 and the valve ball 2, allowing the valve stem body 1 to be easily removed. When one of them is damaged, there is no need to replace them together, which helps to save costs. When installing the handle 14, insert the handle 14 into the block 12 and rotate the pin 16 clockwise to insert it into the pin hole 17 to lock the connection between the valve stem body 1 and the handle 14. Similarly, simply loosen the pin 16 to quickly remove the handle 14.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball valve stem, characterized in that: The valve includes a valve stem body (1), which has a cavity (3) inside. A rotating rod (4) is threaded onto the upper surface of the valve stem body (1), and the bottom end of the rotating rod (4) extends into the cavity (3). A valve ball (2) is connected to the bottom end of the valve stem body (1). A lifting block (5) is rotatably connected to the bottom end of the rotating rod (4) via a bearing. Two locking blocks (6) are symmetrically slidably connected to the bottom of the outer side wall of the valve stem body (1). A slot (7) is opened on the upper surface of the valve ball (2). The bottom end of the valve stem body (1) is inserted into the inner side wall of the slot (7). Two slots (8) are symmetrically opened on the wall. Two transmission rods (9) are symmetrically hinged to the lower surface of the lifting block (5). The bottom end of the transmission rod (9) is hinged to the outer wall of the block (6). Two movable plates (10) are symmetrically fixedly connected to the outer wall of the block (6). Two springs (11) are symmetrically fixedly connected between the movable plate (10) and the inner wall of the valve rod body (1). A block (12) is fixedly connected to the top of the outer wall of the valve rod body (1). A tray (13) is fixedly connected to the bottom of the outer wall of the block (12). A throttle (14) is connected to the outer wall of the block (12).

2. The ball valve stem according to claim 1, characterized in that: The upper surface of the throttle (14) is provided with a square groove (15), the throttle (14) is inserted into the block (12) through the square groove (15), the throttle (14) is threaded with a pin (16), and the outer side wall of the block (12) is provided with a pin hole (17).

3. The ball valve stem according to claim 2, characterized in that: A knob (18) is fixedly connected to one end of the pin (16).

4. The ball valve stem according to claim 3, characterized in that: The outer side wall of the lifting block (5) is symmetrically fixed with two guide bars (19).

5. The ball valve stem according to claim 4, characterized in that: The inner wall of the cavity (3) has two symmetrical guide grooves (20), and the outer wall of the guide strip (19) is slidably connected to the inner wall of the guide groove (20).

6. The ball valve stem according to claim 5, characterized in that: Two positioning strips (21) are symmetrically fixedly connected to the lower surface of the valve stem body (1), and two positioning grooves (22) are symmetrically opened on the inner bottom wall of the slot (7).

7. The ball valve stem according to claim 6, characterized in that: The upper surface of the rotating rod (4) is provided with an internal hexagonal hole (23).

Images