Valve device
By introducing internal threaded part and guide section structure between the valve bonnet and the joint end, the problem of thread damage during assembly of the existing shut-off valve device is solved, and a more accurate and stable assembly process is achieved, improving the valve bonnet and joint end connection quality of the part.
Patent Information
- Application Number
- CN202420004280.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-01-02
AI Technical Summary
The existing shut-off valve device is prone to damage to the threads due to misalignment when assembling the valve bonnet, causing the problem of failure of the valve bonnet.
The internal threaded part and guide section structure between the valve bonnet and the joint end is designed. The inner diameter of the guide section is greater than the diameter of the external thread section. The clearance of the guide section and the mating section plays a role in assembly guidance, which facilitates the valve bonnet and joint end. The assembly of the part reduces the deflection caused by torque.
It effectively avoids deflection caused by large torque, increases the mating connection length between the valve bonnet and the joint end, improves the accuracy and stability of assembly, and reduces the risk of thread damage.
Smart Images
Figure CN222334613U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of refrigeration control, in particular to a valve device. [Background technology]
[0002] The stop valve is usually installed on the outdoor unit side. A valve stem is provided in the valve body. The valve stem can approach or move away from the valve port to cut off or conduct the refrigerant. An external threaded portion is provided at the connecting end of the valve body, and a valve cap is provided with an internal threaded portion that cooperates with the external threaded portion. When assembling the valve cap, it is easy for the valve cap to be misaligned and screwed in with a large torque, causing damage to the threads and leading to failure of the valve cap. [Contents of the utility model]
[0003] The utility model aims to provide a valve device, which can relatively facilitate the assembly between the valve cap and the end of the joint.
[0004] At least one embodiment of the utility model provides a valve device, including a valve body and a valve cap made of plastic material, the valve body including a joint end, the valve cap is provided with an internal threaded portion and a guide section, the joint end is provided with an external threaded portion threadedly matched with the internal threaded portion and a matching section, the external threaded portion is closer to the port than the matching section, the inner diameter of the guide section is larger than the major diameter of the external threaded portion, and the guide section and the matching section are clearance-matched.
[0005] The valve device provided in the present application has a valve cap with an internal threaded portion and a guide section, and a joint end with an external threaded portion and a mating section that cooperate with the internal threaded portion. The guide section and the mating section are clearance-matched, and the inner diameter of the guide section is larger than the major diameter of the external threaded portion. During the assembly process of the valve cap and the joint end, the guide section can serve as an assembly guide, which relatively facilitates the assembly between the valve cap and the joint end.
Brief Description of the Drawings
[0006] Figure 1 A sectional view of the overall structure of a first embodiment of the valve device provided by the utility model;
[0007] Figure 2 A sectional view of the overall structure of a second embodiment of the valve device provided by the utility model;
[0008] Figure 3 The overall structural cross-sectional view of a valve device with another structural mode of the guide section of the filling valve cap provided by the utility model; BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Valve body 10, valve port 12, valve stem 20, valve bonnet 30, filling valve bonnet 30a, main body valve bonnet 30b, internal threaded portion 31, guide section 32, first guide section 321, second guide section 322, first internal threaded portion 311, second internal threaded portion 312, first seal 40, second seal 50, joint end 11, filling end 11a, main body end 11b, port 111, filling port 111a, main body port 111b, external threaded portion 112, mating portion 113, first external threaded portion 112a, second external threaded portion 112b, filling mating portion 113a, main body mating portion 113b. [Specific implementation method]
[0011] In order to enable technical personnel in the field to better understand the technical solution provided by the present application, the technical solution of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The present application focuses on optimizing the design and improvement of the internal structure of the valve bonnet and the matching structure between the valve bonnet and the end of the joint, so that the valve bonnet is provided with an internal threaded portion and an additional guide section, and the end of the joint is provided with an external threaded portion and a matching section that match the internal threaded portion, and the guide section and the matching section are clearance-matched. During the assembly process of the valve bonnet and the end of the joint, the guide section can play an assembly guide role, which relatively facilitates the assembly between the valve bonnet and the end of the joint. For other components such as valve stem, valve port structure, etc., adaptive improvements can be made according to the use environment or system design.
[0012] The present invention provides a valve device, including a valve body 10 and a valve bonnet 30 made of plastic material, the valve body 10 includes a joint end 11, the valve bonnet 30 is provided with an internal threaded portion 31 and a guide section 32, the joint end 11 is provided with an external threaded portion 112 threadedly matched with the internal threaded portion 31 and a matching section 113, the external threaded portion 112 is closer to the port than the matching section 113, the inner diameter of the guide section 32 is larger than the major diameter of the external threaded portion 112, and the guide section 32 and the matching section 113 are clearance matched.
[0013] The first embodiment of the present invention is described below. Figure 1The valve device is provided with a valve port 12, including a valve body 10, the valve body 10 is usually formed by machining a blank, a valve stem 20 is provided in the valve body, the valve stem 20 is provided with an O-ring seal to achieve a sealing match with the inner wall of the valve body, the valve stem 20 can abut or move away from the valve port 12 by cooperating with an external hexagonal wrench to achieve the cut-off or conduction of the refrigerant, a pipe nut end is provided on one side of the valve body 10, and a filling end 11a is provided on the opposite side to the pipe nut part, and a filling valve core is provided in the filling end 11a for subsequent vacuuming and refilling of the refrigerant, and the filling end 11a is provided with a first external threaded portion 112a and a filling fitting portion 113a, the filling end portion 11a is provided with a filling port 111a, the first external thread portion 112a is closer to the filling port 111a than the filling fitting portion 113a, one side of the conical surface portion of the filling end portion 11a is opened to form the filling port 111a, the outer diameter of the filling fitting portion 113a is smaller than the major diameter of the first external thread portion 112a, and also includes a filling valve cap 30a, the filling valve cap 30a as a whole can be made of plastic material, specifically nylon material and at least part of glass fiber material to enhance the strength of the filling valve cap, the filling valve cap 30a as a whole is closed at one end and open at the other end The cap-shaped structure of the filling valve cap 30a is provided with a first internal threaded portion 311 and a first guide section 321. The first guide section 321 is arranged in the inner hole of the filling valve cap 30a and forms part of the hole wall of the filling valve cap. The inner diameter of the first guide section 321 is larger than the major diameter of the first external threaded portion 112a. Since the inner diameter of the first guide section is larger than the major diameter of the first external threaded portion, when the filling valve cap is assembled with the filling end, the first guide section can play a guiding role so that the filling valve cap is installed into the filling end in a straightened state as a whole, which relatively reduces the deflection caused by the large torque when screwing in, and increases the matching connection between the filling valve cap and the filling end. Length, when the filling valve cap and the filling end are matched, the first internal threaded portion 311 is threadedly matched with the first external threaded portion 112a, and the first guide section 321 is gap-matched with the filling matching portion 113a. The valve device also includes a first sealing member 40. Specifically, the first sealing member 40 can be an O-ring, one side of the O-ring is against the bottom wall of the filling valve cap, and the other side is against the conical surface portion where the filling port is located to achieve a sealing effect to prevent leakage of the refrigerant medium. It should be noted that the first guide section 321 can be set to a smooth section structure or the first guide section can also be set to a threaded section structure, such as Figure 3 The first guide segment 321 ′ shown can also be set as a thread segment structure. The major diameter of the first guide segment 321 ′ is greater than the major diameter of the first external thread portion 112a. The filling matching portion 113a can be set as a smooth segment structure.
[0014] Combine the following Figure 2 Combination Figure 1The second embodiment provided by the utility model is specifically described. The difference from the first embodiment is that the joint end 11 in this embodiment is the body end 11b where the valve stem 20 is located, and the valve bonnet 30 is the body bonnet 30b. The body bonnet 30b can be made of plastic material as a whole. Specifically, the body bonnet can be made of nylon material and at least part of glass fiber material to correspondingly enhance the strength of the body bonnet. The body end 11b is provided with a body port 111b, including a second external threaded portion 112b and a body matching portion 113b. The second external threaded portion 112b is closer to the body port 111b than the body matching portion 113b. Correspondingly, a second guide section 322 and a second internal threaded portion 312 are provided in the body bonnet 30b. The inner diameter of the second guide section 322 is larger than that of the first internal threaded portion 113b. The large diameter of the second external threaded portion 112b is to facilitate the fitting and installation between the main body valve bonnet and the end of the main body. In the assembled state, the second internal threaded portion 312 is threadedly fitted with the second external threaded portion 112b, and the second guide section 322 is clearance-fitted with the main body fitting portion 113b. Similarly, the second guide section 322 can be set to a smooth section structure or a threaded section structure, and the main body fitting portion 113b can be set to a smooth section structure. When the main body valve bonnet is assembled with the end of the main body, the second guide section can play a guiding role so that the main body valve bonnet is installed into the end of the main body in an overall straightening state, which greatly reduces the deflection caused by the large torque when screwing in, increases the fitting connection length of the main body valve bonnet and the end of the main body, and can also achieve the technical effects of the present invention, which will not be repeated here.
[0015] The utility model provides a valve device, including a valve body and a valve cap made of plastic material, the valve body including a joint end, the valve cap is provided with an internal threaded portion and a guide section, the joint end is provided with an external threaded portion threadedly matched with the internal threaded portion and a matching section, the external threaded portion is closer to the port than the matching section, the inner diameter of the guide section is larger than the major diameter of the external threaded portion, and the guide section and the matching section are clearance matched.
[0016] The valve device provided in the present application has a valve cap made of plastic material to achieve product cost reduction, and the valve cap is provided with an internal threaded portion and a guide section, and the end of the joint is provided with an external threaded portion and a mating section that cooperate with the internal threaded portion. The guide section and the mating section are clearance-fitted, and the inner diameter of the guide section is set to be larger than the major diameter of the external threaded portion. During the assembly process of the valve cap and the end of the joint, the guide section can play an assembly guide role, which relatively facilitates the assembly between the valve cap and the end of the joint.
Claims
1. A valve device, characterized in that: It includes a valve body and a valve cap made of plastic material, the valve body includes a joint end, the valve cap is provided with an internal threaded portion and a guide section, the joint end is provided with an external threaded portion and a mating section that threadably matches the internal threaded portion, the external threaded portion is closer to the port than the mating section, the inner diameter of the guide section is larger than the major diameter of the external threaded portion, and the guide section and the mating section are clearance-matched.
2. The valve device according to claim 1, characterized in that The connector end is a filling end, the valve bonnet is a filling valve bonnet, the filling end is provided with a filling port, comprises a first external threaded portion and a filling fitting portion, the first external threaded portion is closer to the filling port than the filling fitting portion, the filling valve bonnet is provided with a first internal threaded portion threadedly fitted with the first external threaded portion and a first guide section, the first guide section is clearance fitted with the filling fitting portion.
3. The valve device according to claim 2, characterized in that The utility model further comprises a first sealing member, wherein one side portion of the first sealing member abuts against the bottom wall of the filling valve cap, and the other side portion of the first sealing member abuts against the conical surface portion of the filling port.
4. The valve device according to claim 2, characterized in that The first guide segment is a smooth segment or a threaded segment.
5. The valve device according to claim 1, characterized in that The connector end is the body end, the valve bonnet is the body valve bonnet, the body end is provided with a body port, including a second external threaded portion and a body mating portion, the second external threaded portion is closer to the body port than the body mating portion, the body valve bonnet is provided with a second internal threaded portion threadedly mated with the second external threaded portion and a second guide section, the second guide section is clearance-fitted with the body mating portion.
6. The valve device according to claim 5, characterized in that The second guide segment is a smooth segment or a threaded segment.
7. The valve device according to any one of claims 1 to 6, characterized in that: The valve cap is made of nylon and at least part of glass fiber.
8. The valve device according to any one of claims 1 to 6, characterized in that: The guide section is a smooth section or a threaded section, and the inner diameter of the guide section is larger than the major diameter of the internal threaded portion.
9. The valve device according to any one of claims 1 to 6, characterized in that: The mating section is a smooth section, and the outer diameter of the mating section is smaller than the major diameter of the external threaded portion.
10. The valve device according to claim 1, characterized in that The side of the valve bonnet covers the external threaded portion, and the guide section is located in the inner hole of the valve bonnet and forms a part of the hole wall of the valve bonnet.