Quick splicing mechanism for valve castings

Abstract

The utility model discloses a valve casting quick splicing mechanism, which relates to the technical field of valves, and comprises a valve casting and a splicing pipe, an annular insertion block which can be inserted and matched is arranged between the valve casting and the splicing pipe, and a sealing sliding sleeve is slidably arranged on the outer wall of the valve casting in a surrounding manner. A plug pin capable of triggering the sealing sliding sleeve to seal the joint of the valve casting and the splicing pipe through the abutting effect of the annular inserting block is arranged in the valve casting. The sealing sliding sleeve bounces towards the joint of the valve casting and the splicing pipe along the outer wall of the valve casting and stays at the joint of the valve casting and the splicing pipe under the blocking effect of the check block, so that ring sealing of the splicing position of the valve casting and the splicing pipe is formed, splicing and ring sealing can be achieved only by rotating the splicing pipe in the whole operation process, and the operation is simple and convenient. And the problems that the traditional waterproof adhesive tape is easy to damage and misplace and is difficult to install are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and specifically relates to a quick splicing mechanism for valve castings. Background Technique

[0002] A valve is a device used to control the flow of fluids (such as gases, liquids, or slurries), and is widely used in various industrial and civil fields. The main functions of a valve include opening, closing, regulating, or guiding the flow of fluids.

[0003] A valve is a switching device installed in a pipeline for opening and closing. Generally, both ends of the valve need to be connected to the pipeline. The traditional method is to use threaded docking. Moreover, to ensure sealing performance, waterproof tape needs to be wound around the threads during threaded connection to increase thread sealing. However, in fact, waterproof tape is generally used once and is very easy to fail, resulting in a decrease in sealing performance. In addition, the addition of waterproof tape will bring great trouble to the docking of the valve and the pipeline, and requires extra care and rich experience.

[0004] In view of the above problems, there is an urgent need to innovate and design on the basis of the original quick splicing mechanism for valve castings. Content of the Utility Model

[0005] The technical solution of the utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution significantly different from the existing technology. Specifically, the purpose of the utility model is to provide a quick splicing mechanism for valve castings to solve the problem proposed in the above background technique that the traditional method is to use threaded docking, and to ensure sealing performance, waterproof tape needs to be wound around the threads during threaded connection to increase thread sealing. However, in fact, waterproof tape is generally used once and is very easy to fail, resulting in a decrease in sealing performance. In addition, the addition of waterproof tape will bring great trouble to the docking of the valve and the pipeline, and requires extra care and rich experience.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A quick splicing mechanism for valve castings, including a valve casting and a splicing pipe. An annular insertion block that can be inserted and matched is arranged between the valve casting and the splicing pipe. And a sealing sliding sleeve is slidably arranged around the outer wall of the valve casting. An insertion pin is arranged inside the valve casting, which can trigger the sealing sliding sleeve to seal the joint between the valve casting and the splicing pipe through the abutting action of the annular insertion block.

[0007] A second spring is wound around the outer pipe of the valve casting, and one end of the second spring is welded to a stop block on the outer wall, and the other end of the second spring is fixed to the outer wall of the sealing sliding sleeve.

[0008] Preferably, the valve casting and the splicing pipe are connected by threads, and a thread groove matching the outer wall thread of the splicing pipe is provided on the inner wall of the valve casting.

[0009] Preferably, an annular groove is provided inside the port of the valve casting, cavity grooves are equiangularly provided at the inner end of the annular groove, and the annular insert block is inserted and matched with the annular groove.

[0010] Preferably, the end of the annular insert block is arc-shaped, and the cavity groove is connected through to the outer wall of the valve casting.

[0011] Preferably, the inner end of the bolt is slidably arranged inside the cavity groove, a clamping groove is provided on the inner wall of the sealing sliding sleeve, and the arc-shaped outer end of the bolt penetrates through the valve casting and is inserted and matched with the clamping groove.

[0012] Preferably, the side of the bolt close to the annular insert block is provided with an arc-shaped side, one end of a first spring is welded to the inner wall of the cavity groove, and the other end of the first spring is fixed to the convex block on the side of the bolt.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] Align and dock the valve casting and the splicing pipe, so that the annular insert block is stably inserted into the annular groove. At the same time, rotate the splicing pipe so that the annular insert block is stably inserted into the splicing pipe. As the splicing pipe gradually penetrates into the valve casting, the arc-shaped inner end of the annular insert block will gradually contact the arc-shaped side of the bolt and gradually generate a repulsive force, so that the bolt has the kinetic energy to contract inward into the valve casting and stretch the first spring. When multiple bolts distributed equiangularly are simultaneously pushed by the annular insert block to contract inward, the clamping effect of the bolt on the sealing sliding sleeve is quickly released. At this time, the second spring quickly exerts a resetting effect and generates a large elastic force on the sealing sliding sleeve, so that the sealing sliding sleeve bounces along the outer wall of the valve casting towards the joint of the valve casting and the splicing pipe and stays at the joint of the valve casting and the splicing pipe under the blocking action of the stop block, thereby forming a ring seal at the joint of the valve casting and the splicing pipe. The entire operation process only requires rotating the splicing pipe to achieve splicing and ring sealing, which is simple and convenient, and solves the problems of easy damage, easy misalignment and difficult installation of traditional waterproof tapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view sectional structure schematic diagram of the present utility model before splicing;

[0016] Figure 2 is a front view sectional structure schematic diagram of the present utility model after splicing;

[0017] Figure 3 For the present utility model Figure 1 is a schematic diagram of the splicing structure;

[0018] Figure 4 For the present utility model Figure 2 Schematic diagram of the splicing structure;

[0019] Figure 5 For the present utility model Figure 3 Enlarged structure schematic diagram at position A in the present utility model;

[0020] Figure 6 For the present utility model Figure 4 Enlarged structure schematic diagram at position B in the present utility model.

[0021] In the figure: 1. Valve casting; 11. Annular groove; 12. Cavity groove; 2. Splicing pipe; 21. Annular insertion block; 3. Plug pin; 31. First spring; 4. Sealing sliding sleeve; 41. Second spring; 42. Card slot. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-6 , the present utility model provides a technical solution: a quick splicing mechanism for a valve casting, including a valve casting 1 and a splicing pipe 2. An annular insertion block 21 that can be inserted and matched is provided between the valve casting 1 and the splicing pipe 2. A sealing sliding sleeve 4 is slidably arranged around the outer wall of the valve casting 1. Inside the valve casting 1, there is a plug pin 3 that can trigger the sealing sliding sleeve 4 to seal the joint between the valve casting 1 and the splicing pipe 2 through the abutting action of the annular insertion block 21;

[0024] A second spring 41 is wound around the outer pipe of the valve casting 1. One end of the second spring 41 is welded to a stop block on the outer wall, and the other end of the second spring 41 is fixed to the outer wall of the sealing sliding sleeve 4.

[0025] The valve casting 1 and the splicing pipe 2 are threadedly connected, and a thread groove matching the external thread of the splicing pipe 2 is provided on the inner wall of the valve casting 1.

[0026] An annular groove 11 is provided inside the port of the valve casting 1, and cavity grooves 12 are equally angled at the inner end of the annular groove 11. The annular insertion block 21 is inserted and matched with the annular groove 11.

[0027] The end of the annular insertion block 21 is arc-shaped, and the cavity groove 12 is connected to the outer wall of the valve casting 1 in a through manner.

[0028] The inner end of the bolt 3 is slidably arranged inside the cavity 12, and a clamping groove 42 is formed on the inner wall of the sealing sliding sleeve 4, and the arc-shaped outer end of the bolt 3 penetrates through the valve casting 1 and is inserted and matched with the clamping groove 42.

[0029] One side of the bolt 3 close to the annular insertion block 21 is arranged as an arc-shaped side, and one end of the first spring 31 is welded to the inner wall of the cavity 12, and the other end of the first spring 31 is fixed to the convex block on the side of the bolt 3.

[0030] Working principle: When using this quick splicing mechanism for valve castings, first, as shown in Figure 1 , Figure 3 and Figure 5 , align and dock the valve casting 1 with the splicing pipe 2, so that the annular insertion block 21 is stably inserted into the inside of the annular groove 11. At the same time, rotate the splicing pipe 2 so that the annular insertion block 21 is stably inserted into the splicing pipe 2.

[0031] As the splicing pipe 2 gradually penetrates into the valve casting 1, the arc-shaped inner end of the annular insertion block 21 will gradually contact the arc-shaped side of the bolt 3 and gradually generate a resistance force, so that the bolt 3 has the kinetic energy to contract inward into the valve casting 1 and stretch the first spring 31. When multiple bolts 3 distributed at equal angles are simultaneously resisted and contracted inward by the annular insertion block 21, the clamping action of the bolt 3 on the sealing sliding sleeve 4 through the clamping groove 42 is quickly released. At this time, the second spring 41 quickly exerts a reset effect and generates a large elastic force on the sealing sliding sleeve 4, so that the sealing sliding sleeve 4 bounces along the outer wall of the valve casting 1 towards the joint of the valve casting 1 and the splicing pipe 2 and stays at the joint of the valve casting 1 and the splicing pipe 2 under the blocking action of the stop block, thereby forming a ring seal for the joint of the valve casting 1 and the splicing pipe 2. The entire operation process only needs to rotate the splicing pipe 2 to achieve splicing and ring sealing, which is simple and convenient, and solves the problems of easy damage, easy misalignment and difficult installation of traditional waterproof tapes.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick splicing mechanism for valve castings, comprising a valve casting (1) and a splicing pipe (2), characterized in that: An annular plug block (21) that can be plugged and matched is arranged between the valve casting (1) and the splicing pipe (2), and a sealing sleeve (4) is slidably arranged around the outer wall of the valve casting (1), and a latch (3) is arranged inside the valve casting (1) and can trigger the sealing sleeve (4) to seal the joint between the valve casting (1) and the splicing pipe (2) through the resistance of the annular plug block (21); A second spring (41) is wound around the outer tube of the valve casting (1), one end of the second spring (41) is welded to a stopper on the outer wall, and the other end of the second spring (41) is fixed to the outer wall of the sealing sleeve (4).

2. The quick splicing mechanism for a valve casting according to claim 1, characterized in that: The valve casting (1) and the splicing pipe (2) are connected by threads, and the inner wall of the valve casting (1) is provided with a thread groove matching the thread of the outer wall of the splicing pipe (2).

3. A rapid splicing mechanism for a valve casting according to claim 1, characterized in that: An annular groove (11) is provided inside the port of the valve casting (1), and a cavity groove (12) is provided at an equal angle at the inner end of the annular groove (11), and the annular plug block (21) is plugged and matched with the annular groove (11).

4. A rapid splicing mechanism for a valve casting according to claim 3, characterized in that: The end of the annular insert (21) is arranged in an arc shape, and the cavity (12) is connected through the outer wall of the valve casting (1).

5. A rapid splicing mechanism for a valve casting according to claim 4, characterized in that: The inner end of the latch pin (3) is slidably disposed inside the cavity (12), and a retaining groove (42) is provided on the inner wall of the sealing sleeve (4), and the arc-shaped outer end of the latch pin (3) penetrates the valve casting (1) and is plugged into and matched with the retaining groove (42).

6. A rapid splicing mechanism for a valve casting according to claim 4, characterized in that: The side of the latch (3) close to the annular plug block (21) is arranged as an arc-shaped side edge, and one end of a first spring (31) is welded to the inner wall of the cavity (12), and the other end of the first spring (31) is fixed to a protrusion on the side of the latch (3).

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