Filling structure and stop valve and filling valve thereof

Abstract

The utility model provides a filling structure, through the optimized design of the nut structure, a nut formed by forging and turning is provided, the opposite side distance L between the operation face parts of the operation part of the nut is defined, L is larger than or equal to 15.2 and smaller than or equal to 16.2, and on the premise that the strength and stress resistance are met, parts are designed in a miniaturized mode so as to reduce material use, and the cost of parts is reduced.

Description

[Technical field]

[0001] The present application relates to the field of refrigeration control technology, and in particular to a filling structure and a stop valve and a filling valve thereof. [Background technology]

[0002] During the manufacturing and maintenance of the refrigeration system, it is necessary to fill the refrigeration system with refrigerant and evacuate the pipeline. The fluorine injection nozzle of the valve device is the connection port for performing the above operations. The fluorine injection nozzle is threadedly connected to the nut. With the gradual increase in the cost of raw materials, it is a technical problem that needs to be solved urgently for technical personnel in this field to reduce the cost of parts as much as possible while ensuring that the nut has strength and stress resistance after tightening. [Utility Model Content]

[0003] The utility model aims to provide a new filling structure and a stop valve and a filling valve thereof, which can realize the cost reduction of parts on the basis of ensuring that the nut and the connecting body have strength and stress resistance after being tightened.

[0004] The utility model provides a filling structure, comprising a connecting body, a valve core and a nut formed by forging and machining, wherein the valve core is at least partially installed on the connecting body, the connecting body is provided with an external threaded portion, the nut is provided with an internal threaded portion threadably matched with the external threaded portion, the nut comprises an operating portion, the operating portion comprises an operating face portion, the operating face portion can be matched with an external tool, and the distance between opposite sides of the two operating faces is defined as L, wherein: 15.2≤L≤16.2 is satisfied.

[0005] The filling structure provided by the utility model provides a nut formed by forging and machining through an optimized design of the nut structure, so that the material organization density of the nut is better, and it can ensure that the nut and the connection body have relatively good strength and stress corrosion resistance after being tightened, and the distance between the opposite sides of the operating surface of the operating part is L, wherein 15.2≤L≤16.2, and on the premise of meeting the strength and stress resistance, the components are miniaturized to reduce the use of materials and realize the reduction of components;

[0006] The utility model provides a stop valve, which is provided with a first flow channel and a second flow channel, and includes a valve stem. The stop valve is provided with a valve mouth portion, and the valve stem can abut against or be away from the valve mouth portion to realize the opening and closing of the first flow channel and the second flow channel. The stop valve also includes a filling structure, and the filling structure includes a first connecting body, a nut and a valve core formed by forging and machining, and the valve core is at least partially installed on the first connecting body, the first connecting body is provided with a first external threaded portion, and the nut is provided with an internal threaded portion threadedly matched with the first external threaded portion. The nut includes an operating portion, and the operating portion includes an operating surface portion, and the operating surface portion can be matched with an external tool. The distance between the opposite sides of the two operating surfaces is defined as L, wherein: 15.2≤L≤16.2 is satisfied.

[0007] The stop valve provided by the utility model provides a nut formed by forging and machining through an optimized design of the nut structure, so that the material organization density of the nut is better, and it can ensure that the nut and the connection body have relatively good strength and stress corrosion resistance after being tightened, and the distance between the opposite sides of the operating surface of the operating part is L, wherein 15.2≤L≤16.2, and on the premise of meeting the strength and stress resistance, the components are miniaturized to reduce the use of materials and realize the reduction of components;

[0008] The utility model also provides a filling valve, including a connecting pipe and a filling structure, the filling structure including a second connecting body, a nut forged and machined, and a valve core, the connecting pipe is fixedly connected to the second connecting body, the valve core is at least partially installed on the second connecting body, the second connecting body is provided with a second external threaded portion, the nut is provided with an internal threaded portion threadedly matched with the second external threaded portion, the nut includes an operating portion, the operating portion includes an operating surface portion, the operating surface portion can be matched with an external tool, and the distance between the opposite sides of the two operating surfaces is defined as L, which satisfies: 15.2≤L≤16.2.

[0009] The filling valve provided by the utility model provides a nut formed by forging and machining through an optimized design of the nut structure, so that the material organization density of the nut is better, and it can ensure that the nut and the connecting body have relatively good strength and stress corrosion resistance after being tightened, and the distance between the opposite sides of the operating surface of the operating part is L, wherein 15.2≤L≤16.2, and on the premise of meeting the strength and stress resistance, the components are miniaturized to reduce the use of materials and realize the reduction of components;

Brief Description of the Drawings

[0010] Figure 1 A schematic diagram of the three-dimensional structure of a nut of the filling structure provided by the utility model;

[0011] Figure 2A schematic cross-sectional view of a nut of a filling structure provided by the utility model;

[0012] Figure 3 A schematic diagram of a nut of a filling structure provided by the utility model from a top view;

[0013] Figure 4 A schematic diagram of the stop valve structure provided by the utility model with a filling structure;

[0014] Figure 5 A three-dimensional structural diagram of a filling valve provided with a filling structure provided by the utility model

[0015] Figure 6 A schematic cross-sectional view of a filling valve with a filling structure provided by the utility model [Drawing reference numerals]

[0016] Nut 20, connecting portion 21, end face 211, outer edge portion 212, conical surface portion 22, operating portion 23, hexagonal surface portion 231, ridge portion 232, internal thread portion 20a, valve core 30; stop valve 100, first connecting body 1a, first external thread portion 11a, filling channel 101, pipe nut end 100a; filling valve 200, second connecting body 1b, second external thread portion 11b, pipe 201, second operating portion 12b [Specific implementation method]

[0017] In order to enable those skilled in the art 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. It should be noted that the important protection of the present application is a filling structure. Through the optimized design of the nut structure, a nut formed by forging and machining is provided, and the distance between the opposite sides of the operating surface of the operating part of the nut is defined as L, wherein 15.2≤L≤16.2. On the premise of meeting the strength and stress resistance, the components are miniaturized to reduce the use of materials and achieve component reduction.

[0018] First embodiment

[0019] Please refer to Figure 1-Figure 3 Combination Figure 4As shown, the stop valve 100 is often used in the internal and external units of the refrigeration system. Before installing the air conditioner, the refrigerant and other fluid passages are disconnected by the stop valve. After installation, the refrigerant and other fluids are connected again by the stop valve. The stop valve 100 is provided with a first circulation channel, a second circulation channel and a filling channel 101. The first circulation channel is located at the end 100a of the pipe nut. The stop valve is provided with a valve mouth portion, and the second circulation channel is located below the valve mouth portion. A valve stem is provided in the stop valve, and the valve stem can abut against or be away from the valve mouth portion to realize the connection and disconnection between the first circulation channel and the second circulation channel. The stop valve 100 also includes a filling structure A for use in vacuuming and filling refrigerant during maintenance. The filling structure A includes a first connecting body 1a, a nut 20 and a gas The valve core 30, the first connecting body 1a includes a first external threaded portion 11a, at least part of the valve core 30 is installed in the first connecting body 1a, the nut 20 is provided with an internal threaded portion 20a threadedly matched with the first external threaded portion 11a, wherein the nut 20 is formed by forging as a whole, and the inside of the nut is formed by turning. Through such a processing method, the material structure of the nut 20 as a whole is more compact, and the strength and stress corrosion resistance of the nut 20 after being tightened with the first connecting body 1a are correspondingly stronger. A sealing portion 24 is provided in the nut 20, and the first connecting body 1a is provided with a conical surface portion. The sealing portion 24 is hard-sealed with the conical surface portion of the first connecting body to prevent refrigerant leakage. When refrigerant needs to be filled or vacuum is required, the nut 20 can be written down. The nut 20 includes a connecting portion 21, a conical surface portion 22, and an operating portion 23 connected to the conical surface portion 22. The conical surface portion 22 is located between the connecting portion 21 and the operating portion 23. The connecting portion 21 includes an end face 211 and an outer edge portion 212. One side of the outer edge portion 212 is connected to the conical surface portion 22, and the other side is connected to the end face 211 and can be set to be chamfered or rounded transition between the two to increase forging fluidity, prevent inclusions, and achieve material reduction. The operating portion 23 includes an operating surface portion 231 and an edge portion 232. The operating surface portion 231 can be adapted to an external wrench such as a hexagonal wrench to be tightened with the first connecting body. In this embodiment, the hexagonal surface portion is specifically used as an example for explanation. The two adjacent operating surfaces 231 are connected. An edge 232 is formed between the two edges. In order to increase the forging fluidity, the edge 232 can be set to a rounded or chamfered structure. Since the material of the nut formed by forging and machining is relatively dense, the nut has a certain strength and stress corrosion resistance after being tightened with the first connecting body 1a. On this basis, the opposite side distance L between the operating face portions 231 arranged opposite to each other is set to 15.2≤L≤16.2, and the overall miniaturization design of the parts is performed to achieve the reduction of parts and reduce the use of materials. The operating face portion in this embodiment includes a hexagonal face portion, and the opposite side distance L between the two hexagonal face portions is set to 15.2≤L≤16.2. The hexagonal face portion can be matched with an external wrench such as a hexagonal wrench to facilitate the tightening assembly with the first connecting body;

[0020] In the background technology, hexagonal bars are usually used to turn and form nuts, and the material organization density is poor. In order to meet the strength and stress corrosion resistance after tightening, the wall thickness is often increased, so the material consumption of the nut is large. By optimizing the design of the nut structure, a nut formed by forging and turning is provided, so that the material organization density of the nut is better, which can ensure that the nut and the connecting body have relatively good strength and stress corrosion resistance after tightening, and the distance between the opposite sides of the operating surface of the operating part is L, where 15.2≤L≤16.2. Under the premise of meeting the strength and stress resistance, The components are miniaturized to reduce the use of materials and realize the cost reduction of components. It should be noted that the nut 20 can adopt a structure including a connecting portion 21, a conical surface portion 22, and an operating portion 23, or a structure including only a conical surface portion and an operating portion connected to the conical surface portion, or a structure in which the conical surface portion is eliminated and the entire nut is used as the operating portion. By providing a conical surface portion structure on the nut, the use of materials can be relatively reduced to realize the cost reduction of components. By adding a connecting portion 21, the conical surface portion 22 can be moved downward as a whole between the connecting portion and the operating portion, which can further reduce the use of materials. The connecting portion 21 can adopt a structure such as a straight section with equal diameter.

[0021] The nut 20 is also provided with an R angle, and along the axial direction of the nut 20, the R angle is located between the sealing portion 24 and the internal thread portion 20a. The nut formed by forging and machining has good material density, and has a certain strength and stress corrosion resistance. The R angle can be set to: 0.8≤R≤1.2, so as to reduce the wall thickness of the nut and further reduce the use of materials, thereby achieving component cost reduction;

[0022] The stop valve provided in the present application is provided with a first flow channel and a second flow channel, including a valve stem, and the stop valve is provided with a valve mouth portion. The valve stem can abut against or move away from the valve mouth portion to realize the opening and closing of the first flow channel and the second flow channel. The stop valve also includes a filling structure, the filling structure includes a first connecting body, a nut and a valve core formed by forging and machining, the valve core is at least partially installed on the first connecting body, the first connecting body is provided with a first external threaded portion, the nut is provided with an internal threaded portion threadably matched with the first external threaded portion, the nut includes an operating portion, the operating portion includes an operating surface portion, and the opposite side distance between the operating surfaces is defined as L, wherein: 15.2≤L≤16.2 is satisfied.

[0023] Second embodiment

[0024] Please refer to Figure 1-Figure 3 Combination Figure 5-Figure 6As shown, the filling valve 200 can be used in a refrigeration system to realize rapid refrigerant filling, including a pipe 201 and a filling structure A', the filling structure A' includes a second connecting body 1b, a nut 20 and a valve core 30, wherein a portion of the pipe 201 is located in the second connecting body 1b and is welded and fixed to the second connecting body 1b, the second connecting body 1b is provided with a second external threaded portion 11b, the internal threaded portion 20a of the nut 20 is threadedly matched with the second external threaded portion 11b, the valve core 30 is at least partially installed in the second connecting body 1b, and the second connecting body 1b is provided with a second operating portion 12b. During installation, an external wrench, such as a hexagonal wrench, can be used to respectively cooperate with the second operating portion 12b and the operating portion 23 to realize a tightening fit between the nut and the second connecting body. The specific structure and parameters of the nut 20 have been described in detail in the first embodiment, and will not be repeated here one by one;

[0025] The filling valve provided in the present application provides a nut that is forged and machined through an optimized design of the nut structure, so that the material structure of the nut has better density, which can ensure that the nut and the connecting body have relatively good strength and stress corrosion resistance after being tightened, and the distance between the opposite sides of the two operating surfaces of the operating part is L, where 15.2≤L≤16.2. On the premise of meeting the strength and stress resistance, the components are miniaturized to reduce material usage and achieve component cost reduction.

[0026] It should be noted that the present application uses two specific embodiments, namely a stop valve and a filling valve, to illustrate. In addition to the filling structure, the nut can also be used in situations where it is threadedly matched with other valve structures or a separate connecting body. The filling structure provided in the present application, through the optimized design of the nut structure, provides a nut that is forged and machined, so that the material structure of the nut has better density, which can ensure that the nut and the connecting body have relatively good strength and stress corrosion resistance after being tightened, and the distance between the opposite sides of the two operating surfaces of the operating part is L, where 15.2≤L≤16.2. On the premise of meeting the strength and stress resistance, the components are miniaturized to reduce material usage and achieve component cost reduction.

[0027] It should be noted that the directional nouns such as up, down, left, and right mentioned in this article are all based on the drawings in the specification and are introduced for the convenience of description; and the ordinal numbers such as "first" and "second" in the names of components are also introduced for the convenience of description, and do not mean any limitation on any order of the components. In addition, since the functions of some parts of the various components provided in the above embodiments are the same, this specification adopts a unified naming method for these parts. The above is a detailed introduction to the filling structure provided by the relevant technical solution, and the specific embodiments are used in this article for elaboration. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model, and does not impose any form of limitation on the utility model.

Claims

1. A filling structure, characterized in that: The invention comprises a connecting body, a valve core and a nut formed by forging and machining, wherein the valve core is at least partially mounted on the connecting body, the connecting body is provided with an external threaded portion, the nut is provided with an internal threaded portion threadedly matched with the external threaded portion, the nut comprises an operating portion, the operating portion comprises an operating face portion, the operating face portion can be matched with an external tool, and the distance between the opposite sides of the two operating faces is defined as L, wherein: 15.2mm≤L≤16.2mm.

2. The filling structure according to claim 1, characterized in that: The nut further includes a connecting portion and a conical surface portion, wherein the conical surface portion is located between the connecting portion and the operating portion.

3. The filling structure according to claim 2, characterized in that: The connecting portion includes an end face and an outer edge portion, one side of the outer edge portion is connected to the conical surface portion, and the other side of the outer edge portion is connected to the end face and is rounded or chamfered.

4. The filling structure according to claim 1, characterized in that: The nut has a sealing portion inside, the connecting body has a conical surface portion, and the sealing portion is hard-sealed with the conical surface portion.

5. The filling structure according to claim 4, characterized in that: An R angle is provided inside the nut, and the R angle is located between the sealing portion and the internal thread portion along the axial direction of the nut, wherein 0.8 mm ≤ R ≤ 1.2 mm.

6. The filling structure according to any one of claims 1 to 5, characterized in that: The operating surface includes a hexagonal surface, which can be matched with an external wrench, and the distance between the opposite sides of the two hexagonal surfaces is L.

7. The filling structure according to claim 6, characterized in that: An edge portion is formed between two adjacent hexagonal surface portions.

8. The filling structure according to claim 7, characterized in that: The edge portion is a rounded structure or a chamfered structure.

9. A stop valve, characterized in that: A first flow channel and a second flow channel are provided, including a valve stem, the stop valve is provided with a valve port, the valve stem can abut or move away from the valve port to realize the opening and closing of the first flow channel and the second flow channel, the stop valve also includes a filling structure, the filling structure includes a first connecting body, a nut forged and machined, and a valve core, the valve core is at least partially installed on the first connecting body, the first connecting body is provided with a first external threaded portion, the nut is provided with an internal threaded portion threadedly matched with the first external threaded portion, the nut includes an operating portion, the operating portion includes an operating face portion, the operating face portion can be matched with an external tool, and the distance between the opposite sides of the two operating faces is defined as L, wherein: 15.2mm≤L≤16.2mm.

10. A filling valve, characterized in that: It includes a pipe and a filling structure, the filling structure includes a second connecting body, a nut formed by forging and machining, and a valve core, the pipe is fixedly connected to the second connecting body, the valve core is at least partially installed on the second connecting body, the second connecting body is provided with a second external threaded portion, the nut is provided with an internal threaded portion threadedly matched with the second external threaded portion, the nut includes an operating portion, the operating portion includes an operating face portion, the operating face portion can be matched with an external tool, and the distance between the opposite sides of the two operating faces is defined as L, wherein: 15.2mm≤L≤16.2mm.

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