Hard seal ball valve

Abstract

The utility model discloses a kind of hard sealing ball valves, including protective shell, the inside of the protective shell is provided with rotatable valve core, the both ends of the protective shell are fixedly connected with connecting pipe, the top of the valve core is fixedly connected with valve stem, the top of the valve stem is fixedly connected with telescopic link, the top of the telescopic link is fixedly connected with rotating disc, the top of the protective shell is fixedly connected with limit ring.The utility model is equipped with arc-shaped groove, cooperate the use of limiting rod, can play the role of limiting when rotating disc rotates, when rotating disc is connected to valve core, utilize telescopic link to make limiting rod descend, move limiting rod to vertical groove, to be able to lock rotating disc, rotating disc cannot be rotated, realize the purpose of preventing accidental touch, ensure the normal operation of the valve, and the both ends of arc-shaped groove are equipped with vertical groove, can be limited in the two states of valve core connection or closing, to improve the practicability of the device.

Description

Technical Field

[0001] This utility model belongs to the technical field of hard-seal ball valve devices, specifically a hard-seal ball valve. Background Technology

[0002] Hard-seal ball valves are industrial valves that use a metal-to-metal sealing pair. They are mainly used for fluid control in the petroleum, natural gas, chemical, and power industries, and are suitable for harsh working conditions such as high-temperature and high-pressure water, steam, dust, and corrosive media. Their structure is divided into floating ball type and fixed ball type, using flange, welding, or threaded connections. The sealing direction covers both unidirectional and bidirectional. The valve body and sealing surface achieve high hardness through spraying or welding processes. In addition, hard-seal ball valves are often used in food production processes to control the transportation of food raw materials.

[0003] In the prior art, Chinese patent CN222559244U discloses a small-opening, erosion-resistant, hard-seal ball valve. This small-opening, erosion-resistant, hard-seal ball valve includes a valve body, connecting columns, a nut, a wrench, a triangular plate, a limiting column, a sealing joint, a ball, a through hole, an inflow channel, an outflow channel, an upper valve stem, an upper bearing, a first spring, a limiting end, a lower valve stem, a lower bearing, a valve seat, a sealing ring, and a second spring. Connecting columns are provided on the four right-angled sides of the valve body in the same direction. A wrench is provided at the upper end of the valve body, a nut is provided at the upper end of the wrench, a triangular plate is provided at the left end of the wrench, a limiting column is provided at the upper end of the connecting columns, sealing joints are provided at both the front and rear ends of the valve body, and a ball is provided inside the valve body. The ball has a through hole in the horizontal direction.

[0004] However, the automatic feeding device provided in the above technical solution still has many shortcomings in actual use. For example, the valve stem of the hard-seal ball valve does not have a protective structure to prevent accidental contact, which makes it easy to accidentally rotate the valve stem during use, thereby affecting the normal operation of the valve and resulting in poor practicality. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problem mentioned in the background art that the hard-seal ball valve lacks a protective structure on the outside of the valve stem to prevent accidental contact, which makes it easy to accidentally rotate the valve stem during use, thus affecting the normal operation of the valve and resulting in poor practicality, this utility model adopts the following technical solution.

[0007] A hard-seal ball valve includes a protective shell, inside which a rotatable valve core is disposed. Connecting pipes are fixedly connected to both ends of the protective shell. A valve stem is fixedly connected to the top of the valve core. A telescopic rod is fixedly connected to the top of the valve stem. A turntable is fixedly connected to the top of the telescopic rod. A limit ring is fixedly connected to the top of the protective shell. Multiple arc-shaped grooves are formed on the inner wall of the limit ring. Vertical grooves are formed at both ends of each arc-shaped groove. The arc-shaped grooves communicate with the vertical grooves. A limit rod is slidably connected inside each arc-shaped groove, and the limit rod is fixedly connected to the telescopic rod.

[0008] Preferably, the valve core has a through circular hole in the middle, the inner diameter of the circular hole of the valve core matches the inner diameter of the connecting pipe, the central axis of the valve stem coincides with the vertical center line of the valve core, and sealing gaskets are fixedly connected to the top and bottom of the valve core, and the sealing gaskets have a "pot-shaped" structure.

[0009] Preferably, the central axes of the turntable, telescopic rod, and valve stem coincide, the arc-shaped groove and the vertical groove form an "n" structure, and the limiting rod is evenly distributed in a ring about the central axis of the telescopic rod.

[0010] Preferably, a flange is fixedly connected to the end of the connecting pipe, a threaded sleeve is fixedly connected to the outside of the connecting pipe, a protective cylinder is threadedly connected to the outside of the threaded sleeve, the outer dimension of the flange matches the inner dimension of the protective cylinder, the central axis of the protective cylinder coincides with the central axis of the connecting pipe, and the connecting pipe is symmetrical about the vertical center line of the protective shell.

[0011] Preferably, the top of the turntable has multiple slots, which are evenly distributed in a ring around the central axis of the turntable. An indicator is fixedly connected to one side of the turntable, and the position of the indicator corresponds to the position of one of the limiting rods.

[0012] Preferably, a threaded telescopic column is fixedly connected to the bottom of the protective shell, and a mounting plate is fixedly connected to the bottom end of the threaded telescopic column. Multiple positioning holes are opened on the outer side of the mounting plate, and the multiple positioning holes are evenly distributed in a ring about the central axis of the mounting plate. The central axis of the threaded telescopic column coincides with the vertical center line of the protective shell.

[0013] Preferably, both ends of the protective shell are provided with multiple reinforcing strips, which are symmetrical about the vertical center line of the protective shell, and the reinforcing strips and the protective shell form an integrated structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the design of an arc-shaped groove and the use of a limiting rod, can limit the rotation of the turntable. When the turntable rotates to the valve core activation state, the telescopic rod moves the limiting rod downwards, placing it into the vertical groove, thereby locking the turntable and preventing it from rotating. This achieves the purpose of preventing accidental contact and ensuring the normal operation of the valve. Furthermore, both ends of the arc-shaped groove are equipped with vertical grooves, which can achieve limiting in both the valve core activation and deactivation states, thus improving the practicality of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the protective shell of this utility model; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the valve core of this utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the limiting ring of this utility model.

[0016] The correspondence between the labels and component names in the attached figures is as follows: 1. Protective shell; 2. Valve core; 3. Connecting pipe; 4. Valve stem; 5. Telescopic rod; 6. Turntable; 7. Limiting ring; 8. Arc groove; 9. Vertical groove; 10. Limiting rod; 11. Flange; 12. Threaded sleeve; 13. Protective cylinder; 14. Indicator; 15. Threaded telescopic column; 16. Mounting plate; 17. Positioning hole; 18. Reinforcing strip. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0020] Please see Figure 1-5 This utility model provides an embodiment of a hard-seal ball valve, including a protective shell 1, a rotatable valve core 2 inside the protective shell 1, connecting pipes 3 fixedly connected to both ends of the protective shell 1, a threaded telescopic column 15 fixedly connected to the bottom of the protective shell 1, and a mounting plate 16 fixedly connected to the bottom end of the threaded telescopic column 15. Multiple positioning holes 17 are provided on the outer side of the mounting plate 16, and the multiple positioning holes 17 are evenly distributed in a ring about the central axis of the mounting plate 16. The central axis of the threaded telescopic column 15 coincides with the vertical center line of the protective shell 1. Through the positioning holes 17 on the mounting plate 16, and with the use of external bolts, the mounting plate 16 can be fixed to the external horizontal plane, completing the installation of the device. Rotating the threaded telescopic column 15 can adjust the height of the device.

[0021] In this embodiment, a flange 11 is fixedly connected to the end of the connecting pipe 3, and a threaded sleeve 12 is fixedly connected to the outside of the connecting pipe 3. A protective cylinder 13 is threadedly connected to the outside of the threaded sleeve 12. The outer dimensions of the flange 11 match the inner dimensions of the protective cylinder 13. The central axis of the protective cylinder 13 coincides with the central axis of the connecting pipe 3. The connecting pipe 3 is symmetrical about the vertical center line of the protective shell 1. The flange 11 can be used to connect the connecting pipes 3 at both ends of this device to the external conveying pipe and the discharge pipe, respectively. By rotating the protective cylinder 13 and using the threaded sleeve 12, the protective cylinder 13 can move towards the flange 11, covering the connection between the flange 11 and the pipe, which can protect the connection and ensure the stability of the connection. The threaded sleeve 12 can also protect the connecting pipe 3.

[0022] In this embodiment, a valve stem 4 is fixedly connected to the top of the valve core 2. A through circular hole is opened in the middle of the valve core 2. The inner diameter of the circular hole of the valve core 2 matches the inner diameter of the connecting pipe 3. The central axis of the valve stem 4 coincides with the vertical center line of the valve core 2. Sealing gaskets are fixedly connected to the top and bottom of the valve core 2, and the structure of the sealing gaskets is a "pot-shaped" structure. A telescopic rod 5 is fixedly connected to the top of the valve stem 4. A turntable 6 is fixedly connected to the top of the telescopic rod 5. Rotating the turntable 6 causes the telescopic rod 5 and the valve stem 4 to rotate, thereby driving the valve core 2 to rotate, thereby controlling the opening and closing of the connecting pipes 3 at both ends.

[0023] In this embodiment, a limiting ring 7 is fixedly connected to the top of the protective shell 1. Multiple arc-shaped grooves 8 are formed on the inner wall of the limiting ring 7. Vertical grooves 9 are provided at both ends of each arc-shaped groove 8, and the arc-shaped grooves 8 and vertical grooves 9 communicate with each other. A limiting rod 10 is slidably connected inside the arc-shaped groove 8, and the limiting rod 10 is fixedly connected to the telescopic rod 5. The central axes of the turntable 6, the telescopic rod 5, and the valve stem 4 coincide. The arc-shaped grooves 8 and vertical grooves 9 form an "n" structure. The limiting rods 10 are evenly distributed in a ring shape about the central axis of the telescopic rod 5. The arc-shaped groove 8, in conjunction with the use of the limiting rod 10, can limit the rotation of the turntable 6. When the turntable 6 rotates to the point where the valve core 2 is turned on, the telescopic rod 5 moves the limiting rod 10 down, placing it into the vertical groove 9. This locks the turntable 6, preventing it from rotating and thus preventing accidental contact. This ensures the normal operation of the valve. Furthermore, the arc-shaped groove 8 has vertical grooves 9 at both ends, which can limit the valve core 2 in both on and off states, thereby improving the practicality of the device.

[0024] In this embodiment, the top of the turntable 6 is provided with multiple slots, which are evenly distributed in a ring around the central axis of the turntable 6. An indicator 14 is fixedly connected to one side of the turntable 6. The position of the indicator 14 corresponds to the position of one of the limiting rods 10. The slots make it easy for the user to rotate the turntable 6, and the indicator 14 makes it easy for the user to see the position of the limiting rod 10.

[0025] In this embodiment, multiple reinforcing strips 18 are provided at both ends of the protective shell 1. The multiple reinforcing strips 18 are symmetrical about the vertical center line of the protective shell 1. The reinforcing strips 18 and the protective shell 1 form an integrated structure. The setting of the reinforcing strips 18 can enhance the strength of the protective shell 1, making the protective shell 1 less prone to deformation.

[0026] Working principle: When using this device, firstly, the mounting plate 16 is fixed to the external horizontal plane by using the positioning holes 17 on the mounting plate 16 and external bolts, thus completing the installation of the device. Rotating the threaded telescopic column 15 can adjust the height of the device. Using the flange 11, the connecting pipes 3 at both ends of the device can be connected to the external conveying pipe and discharge pipe respectively. Rotating the protective cylinder 13, in conjunction with the threaded sleeve 12, allows the protective cylinder 13 to move towards the flange 11, covering the connection between the flange 11 and the pipe, thus protecting the connection and ensuring the stability of the connection. The threaded sleeve 12 also protects the connecting pipe 3. Rotating the turntable 6 causes the telescopic rod 5 and valve stem 4 to rotate, thereby driving the valve core 2 to rotate, thus controlling the opening and closing of the connecting pipes 3 at both ends.

[0027] The arc-shaped groove 8, in conjunction with the limiting rod 10, serves to limit the rotation of the turntable 6. When the turntable 6 rotates to the point where the valve core 2 is engaged, the telescopic rod 5 moves the limiting rod 10 downwards, placing it into the vertical groove 9. This locks the turntable 6, preventing it from rotating and thus preventing accidental contact and ensuring the normal operation of the valve. Furthermore, the arc-shaped groove 8 has vertical grooves 9 at both ends, allowing for limiting the valve core 2 in both engaged and disengaged states, enhancing the device's practicality. The groove design facilitates the user's rotation of the turntable 6, and the indicator 14 allows the user to easily view the position of the limiting rod 10. The reinforcing strip 18 strengthens the protective shell 1, preventing deformation.

[0028] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A hard-seal ball valve, comprising a protective housing (1), characterized in that: The protective shell (1) is provided with a rotatable valve core (2) inside. Both ends of the protective shell (1) are fixedly connected to connecting pipes (3). The top of the valve core (2) is fixedly connected to a valve stem (4). The top of the valve stem (4) is fixedly connected to a telescopic rod (5). The top of the telescopic rod (5) is fixedly connected to a turntable (6). The top of the protective shell (1) is fixedly connected to a limiting ring (7). The inner wall of the limiting ring (7) is provided with multiple arc-shaped grooves (8). Both ends of the arc-shaped grooves (8) are provided with vertical grooves (9). The arc-shaped grooves (8) and the vertical grooves (9) are connected. The inside of the arc-shaped grooves (8) is slidably connected to a limiting rod (10), and the limiting rod (10) and the telescopic rod (5) are fixedly connected.

2. The hard-seal ball valve according to claim 1, characterized in that: The valve core (2) has a through hole in the middle. The inner diameter of the hole of the valve core (2) matches the inner diameter of the connecting pipe (3). The central axis of the valve stem (4) coincides with the vertical center line of the valve core (2). The top and bottom of the valve core (2) are fixedly connected with sealing gaskets, and the sealing gaskets have a "pot-shaped" structure.

3. The hard-seal ball valve according to claim 2, characterized in that: The central axes of the turntable (6), telescopic rod (5) and valve stem (4) coincide, the arc groove (8) and vertical groove (9) form an "n" structure, and the limiting rod (10) is evenly distributed in a ring about the central axis of the telescopic rod (5).

4. The hard-seal ball valve according to claim 3, characterized in that: The end of the connecting pipe (3) is fixedly connected to a flange (11), and the outside of the connecting pipe (3) is fixedly connected to a threaded sleeve (12). The outside of the threaded sleeve (12) is threadedly connected to a protective sleeve (13). The outer dimensions of the flange (11) match the inner dimensions of the protective sleeve (13). The central axis of the protective sleeve (13) coincides with the central axis of the connecting pipe (3). The connecting pipe (3) is symmetrical about the vertical center line of the protective shell (1).

5. The hard-seal ball valve according to claim 4, characterized in that: The top of the turntable (6) has multiple slots, which are evenly distributed in a ring around the central axis of the turntable (6). An indicator (14) is fixedly connected to one side of the turntable (6), and the position of the indicator (14) corresponds to the position of one of the limiting rods (10).

6. The hard-seal ball valve according to any one of claims 1-5, characterized in that: The bottom of the protective shell (1) is fixedly connected to a threaded telescopic column (15), and the bottom end of the threaded telescopic column (15) is fixedly connected to a mounting plate (16). Multiple positioning holes (17) are opened on the outer side of the mounting plate (16). The multiple positioning holes (17) are evenly distributed in a ring about the central axis of the mounting plate (16). The central axis of the threaded telescopic column (15) coincides with the vertical center line of the protective shell (1).

7. The hard-seal ball valve according to claim 6, characterized in that: Both ends of the protective shell (1) are provided with multiple reinforcing strips (18), which are symmetrical about the vertical center line of the protective shell (1). The reinforcing strips (18) and the protective shell (1) form an integrated structure.

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