Valve for liquefied gas steel cylinder

Abstract

The valve for the liquefied gas steel cylinder comprises a valve body, a valve rod is arranged at the middle end of the top of the valve body, an inserting rod is fixedly connected to the top of the valve rod, a fixing cylinder is fixedly connected to the top of the valve body, and an outer gear ring is fixedly connected to the surface of the fixing cylinder. And the top of the fixed cylinder is fixedly connected with a pressure spring. Under the matching action of the hand wheel, the fixing column, the inserting hole, the inserting rod, the fixing sleeve, the inner gear ring, the fixing disc, the pressure applying spring, the outer gear ring, the valve body and the valve rod, a worker can operate the valve body conveniently, and meanwhile the opening process of the valve body can be completed only after the worker presses the hand wheel and then rotates the hand wheel; therefore, the operation of the valve main body has double insurance, and the probability that the valve main body is opened due to collision or misoperation in the using process and the liquefied gas steel cylinder leaks is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a valve for liquefied gas cylinders. Background Technology

[0002] Liquefied petroleum gas (LPG) cylinders are refillable metal pressure vessels used for storing and transporting LPG. They are typically made of steel and are pressure-resistant and airtight. Valves, as components that control the storage and release of LPG within the cylinders, have performance that directly affects safety during use.

[0003] However, due to the lack of corresponding limiting structures, the valves of existing liquefied petroleum gas (LPG) cylinders are prone to accidental opening due to collisions or misoperation during use, which may cause LPG leakage inside the cylinder. This could not only lead to serious safety accidents such as fires and explosions, but also pose certain safety hazards to personnel and property. Utility Model Content

[0004] The purpose of this utility model is to provide a valve for liquefied gas cylinders, which has a corresponding limiting structure, reducing the probability of the valve opening due to accidental collision or misoperation when not in use, and improving the overall safety of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve for liquefied petroleum gas cylinders, comprising a valve body, a valve stem disposed at the middle of the top of the valve body, an insert rod fixedly connected to the top of the valve stem, a fixed cylinder fixedly connected to the top of the valve body, an external toothed ring fixedly connected to the surface of the fixed cylinder, a pressure spring fixedly connected to the top of the fixed cylinder, a fixed disc fixedly connected to the top of the pressure spring, a fixed sleeve movably connected between the upper end of the fixed cylinder and the top of the fixed disc, an internal toothed ring fixedly connected to the lower end of the inner cavity of the fixed sleeve, the internal toothed ring meshing with the external toothed ring, a fixed post fixedly connected to the top of the fixed sleeve, a handwheel placed at the upper end of the fixed post, an insertion hole opened at the middle end of the fixed post, and the surface of the insert rod movably connected to the surface of the insertion hole.

[0006] As a preferred embodiment, a first plastic plug is fitted onto the bottom of the valve body, and a second plastic plug is fitted onto the right end of the valve body.

[0007] As a preferred embodiment, guide holes are provided at both ends of the fixed cylinder, and guide rods are movably connected to the surface of the guide holes, with the top of the guide rods fixedly connected to the bottom of the fixed plate.

[0008] As a preferred embodiment, the upper end of the fixing column is threaded with a locking nut, and the bottom of the locking nut contacts the middle of the top of the handwheel.

[0009] As a preferred embodiment, a reinforcing plate is fixedly connected between the top of the fixing sleeve and the lower end of the fixing post, and the number of the reinforcing plates is four.

[0010] As a preferred embodiment, both the insertion rod and the insertion hole are hexagonal in shape.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model, through the coordinated action of the handwheel, fixed column, insertion hole, insertion rod, fixed sleeve, internal gear ring, fixed plate, pressure spring, external gear ring, valve body, and valve stem, facilitates the operation of the valve body. Furthermore, because the valve body requires manual pressing and rotation of the handwheel to open, the operation of the valve body is doubly protected, effectively reducing the probability of leakage from the liquefied gas cylinder due to collision or misoperation during use, thus improving overall safety. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a bottom view of the valve body structure of this utility model;

[0015] Figure 3 This is a front sectional view of the fixing sleeve of this utility model;

[0016] Figure 4 This is a bottom view of the fixed sleeve structure of this utility model.

[0017] In the diagram: 1. Valve body; 2. First plastic plug; 3. Second plastic plug; 4. Handwheel; 5. Locking nut; 6. Fixing post; 7. Fixing sleeve; 8. Fixing cylinder; 9. Valve stem; 10. Pressure spring; 11. Fixing disc; 12. Guide hole; 13. External toothed ring; 14. Internal toothed ring; 15. Guide rod; 16. Insert rod; 17. Insertion hole; 18. Reinforcing plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[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.

[0020] The valve body 1, first plastic plug 2, second plastic plug 3, handwheel 4, locking nut 5, fixing column 6, fixing sleeve 7, fixing cylinder 8, valve stem 9, pressure spring 10, fixing plate 11, guide hole 12, external toothed ring 13, internal toothed ring 14, guide rod 15, insertion rod 16, insertion hole 17, and reinforcing plate 18 of this application are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0021] Example 1:

[0022] Please see Figures 1-4 As shown, this utility model provides a valve for liquefied petroleum gas cylinders, including a valve body 1. A valve stem 9 is provided at the middle of the top of the valve body 1. An insert rod 16 is fixedly connected to the top of the valve stem 9. A fixed cylinder 8 is fixedly connected to the top of the valve body 1. An external toothed ring 13 is fixedly connected to the surface of the fixed cylinder 8. A pressure spring 10 is fixedly connected to the top of the fixed cylinder 8. A fixed plate 11 is fixedly connected to the top of the pressure spring 10. A fixed sleeve 7 is movably connected between the upper end of the fixed cylinder 8 and the top of the fixed plate 11. An internal toothed ring 14 is fixedly connected to the lower end of the inner cavity of the fixed sleeve 7. The internal toothed ring 14 meshes with the external toothed ring 13. A fixed post 6 is fixedly connected to the top of the fixed sleeve 7. A handwheel 4 is placed at the upper end of the fixed post 6. An insertion hole 17 is opened at the middle of the fixed post 6. The surface of the insert rod 16 is movably connected to the surface of the insertion hole 17.

[0023] In this technical solution, when the valve body 1 needs to be operated, the operator holds the handwheel 4 and presses it to move the fixed post 6 and the insertion hole 17 downwards along the surface of the insertion rod 16. The movement of the fixed post 6 can move the fixed sleeve 7 and the internal gear ring 14, and push the fixed plate 11 to compress the pressure spring 10 until the internal gear ring 14 can disengage from the surface of the external gear ring 13 during the movement. Then, the operator can operate the handwheel 4 to rotate, which will rotate through the fixed post 6, the insertion hole 17, the insertion rod 16, and the valve stem 9 in the valve body 1, thereby driving the valve body 1 to open and close. This facilitates the operation of the valve body 1. After the operation is completed, the operator stops pressing the handwheel 4. Under the tension of the pressure spring 10, the fixed sleeve 7, internal gear ring 14, fixed column 6, and handwheel 4 can be moved upward through the fixed plate 11. This causes the internal gear ring 14 to mesh with the external gear ring 13, thereby limiting the rotation direction of the fixed sleeve 7, fixed column 6, and handwheel 4. This prevents the operator from rotating the handwheel 4 without pressing it. Since the opening of the valve body 1 requires the operator to press and rotate the handwheel 4, the operation of the valve body 1 has double insurance. This effectively reduces the probability of the valve body 1 opening due to collision or misoperation during use, which could lead to leakage of the liquefied gas cylinder, and improves the overall safety of use.

[0024] It should be noted that the pressure spring 10 is initially under pressure and exerts a certain force on the fixed plate 11, fixed sleeve 7, fixed column 6 and handwheel 4. This requires the operator to apply a corresponding force to the handwheel 4 when operating the valve body 1, effectively reducing the probability of the inner toothed ring 14 and the outer toothed ring 13 disengaging when not being pressed by an operator.

[0025] Example 2:

[0026] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, a first plastic plug 2 is fitted at the bottom of the valve body 1, and a second plastic plug 3 is fitted at the right end of the valve body 1. Guide holes 12 are provided at both ends of the fixed cylinder 8. Guide rods 15 are movably connected to the surface of the guide holes 12. The top of the guide rods 15 is fixedly connected to the bottom of the fixed plate 11. A locking nut 5 is threadedly connected to the upper end of the fixed column 6. The bottom of the locking nut 5 contacts the middle of the top of the handwheel 4. A reinforcing plate 18 is fixedly connected between the top of the fixed sleeve 7 and the lower end of the fixed column 6. There are four reinforcing plates 18. The shape of the insertion rod 16 and the insertion hole 17 is hexagonal.

[0027] In this technical solution, the first plastic plug 2 and the second plastic plug 3 are used to protect the opening of the valve body 1, preventing foreign objects from entering the valve body 1 and affecting subsequent use when not in use. The guide hole 12 and the guide rod 15 are used to guide the fixed cylinder 8 and the fixed plate 11, preventing the fixed plate 11 from rotating or tilting due to force. The locking nut 5 is used to fix the handwheel 4 and the fixed column 6. The reinforcing plate 18 is used to effectively improve the connection strength between the fixed sleeve 7 and the fixed column 6.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A valve for liquefied petroleum gas cylinders, comprising a valve body (1), characterized in that: A valve stem (9) is provided at the middle of the top of the valve body (1). A plug rod (16) is fixedly connected to the top of the valve stem (9). A fixed cylinder (8) is fixedly connected to the top of the valve body (1). An external toothed ring (13) is fixedly connected to the surface of the fixed cylinder (8). A pressure spring (10) is fixedly connected to the top of the fixed cylinder (8). A fixed disc (11) is fixedly connected to the top of the pressure spring (10). The upper end of the fixed cylinder (8) is connected to the fixed disc (11). A fixed sleeve (7) is movably connected between the top of the disc (11). An internal toothed ring (14) is fixedly connected to the lower end of the inner cavity of the fixed sleeve (7). The internal toothed ring (14) meshes with the external toothed ring (13). A fixed post (6) is fixedly connected to the top of the fixed sleeve (7). A handwheel (4) is placed at the upper end of the fixed post (6). An insertion hole (17) is opened at the middle end of the fixed post (6). The surface of the insertion rod (16) is movably connected to the surface of the insertion hole (17).

2. The valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The bottom of the valve body (1) is fitted with a first plastic plug (2), and the right end of the valve body (1) is fitted with a second plastic plug (3).

3. A valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The fixed cylinder (8) has guide holes (12) at both ends. A guide rod (15) is movably connected to the surface of the guide hole (12). The top of the guide rod (15) is fixedly connected to the bottom of the fixed plate (11).

4. A valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: The upper end of the fixed column (6) is threaded with a locking nut (5), and the bottom of the locking nut (5) contacts the middle of the top of the handwheel (4).

5. A valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: A reinforcing plate (18) is fixedly connected between the top of the fixing sleeve (7) and the lower end of the fixing post (6), and there are four reinforcing plates (18).

6. A valve for a liquefied petroleum gas cylinder according to claim 1, characterized in that: Both the insertion rod (16) and the insertion hole (17) are hexagonal in shape.

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