Sealing structure of pressure gauge

Abstract

The utility model discloses a sealing structure of a pressure gauge. A connecting part is arranged on a pressure gauge main body; the pressure gauge main body is connected with the valve seat through the connecting part, and the fixing part is arranged at the upper end of the connecting part; when the pressure gauge body is connected with the valve seat, the fixing part abuts against the valve seat. The radius of the fixing part is at least not less than that of the joint of the valve seat and the connecting part; the pressure gauge is reasonable in structural design, and the pressure gauge main body is arranged to detect pressure; the connecting part is arranged and used for being connected with the valve seat; the radius of the fixing part is at least not smaller than that of the connecting part of the valve seat, so that the effect of preventing air leakage is achieved; in addition, a user can directly connect the pressure gauge main body with the valve seat by himself, so that the damaged pressure gauge main body can be replaced, and the pressure gauge is simple in structure, simple in manufacturing process, convenient to install, easy to disassemble and good in sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure gauge field especially relates to a sealing structure of pressure gauge. BACKGROUND

[0002] With economic development, pressure gauge is widely used, and the demand is also greatly increased. Pressure gauge is an instrument for measuring and indicating pressure. The existing pressure gauge is usually connected with the valve seat through the connecting part, which is usually connected by threads. A thread is provided on the connecting part of the pressure gauge to connect with the valve seat, and a sealing ring is also provided in the thread to increase the sealing effect. Then the pressure gauge and the valve seat are connected by welding or glue sealing to provide secondary sealing. This design increases the time and process in the production process, and cannot meet the rapid assembly. In some cases, such as when the pressure gauge is damaged and needs to be replaced, it cannot be replaced. This design increases the cost. Some users do not use welding or glue sealing to connect. This design may cause gas leakage at the connecting part. SUMMARY

[0003] The utility model solves the technical problem in the prior art and provides a sealing structure of pressure gauge.

[0004] The utility model adopts the technical scheme that:

[0005] A sealing structure of pressure gauge, comprising a pressure gauge main body, the connecting part is arranged on the pressure gauge main body, the pressure gauge main body is connected with the valve seat through the connecting part, the fixed part is arranged on the upper end of the connecting part, the fixed part is connected with the valve seat when the pressure gauge main body is connected with the valve seat, the radius of the fixed part is at least not less than the radius of the connecting part of the valve seat, and the sealing assembly is arranged between the fixed part and the connecting part.

[0006] The above components achieve the following effects: the pressure gauge main body is provided for detecting pressure, the connecting part is provided for connecting with the valve seat, the fixed part is provided, and the sealing assembly is arranged on the fixed part, so that when the pressure gauge main body is connected with the valve seat, the sealing assembly between the pressure gauge main body and the valve seat is improved, the radius of the fixed part is set to be at least not less than the radius of the connecting part of the valve seat, and the effect of preventing gas leakage is achieved. The user can also directly connect the pressure gauge main body with the valve seat, so that the pressure gauge main body can be replaced when it is damaged. This structure is simple to use, the manufacturing process is simple, and the installation is convenient and easy to disassemble, with good sealing performance.

[0007] Preferably, the fixed part comprises a first fixed position and a second fixed position, the first fixed position is arranged above the second fixed position, and the second fixed position is close to the connecting part.

[0008] The effect achieved by the above components is that the fixed part is provided for placing the sealing assembly; the first fixed position and the second fixed position are provided for placing different sealing assemblies.

[0009] Preferably, the sealing assembly comprises at least one sealing washer and a sealing ring; the sealing ring is arranged on the second fixed position; and the sealing washer is arranged on the first fixed position.

[0010] The effect achieved by the above components is that the sealing washer and the sealing ring are provided for sealing work; the sealing ring is arranged on the second fixed position, and the sealing washer is arranged on the first fixed position, so that the sealing assembly is better fixed on the fixed part.

[0011] Preferably, when the pressure gauge body is connected with the valve seat, the sealing washer is in abutment connection with the valve seat, and the sealing ring is arranged in the valve seat.

[0012] The effect achieved by the above components is that the sealing washer is in abutment connection with the valve seat, and the sealing ring is in abutment connection with the inner wall of the valve seat, so that the sealing effect is better when the pressure gauge body is connected with the valve seat.

[0013] Preferably, the pressure gauge body is provided with a placing seat and a pressure detection gauge; the pressure detection gauge is arranged on the placing seat; and the fixed part and the connecting part are arranged on the placing seat and are located on opposite sides of the pressure detection gauge.

[0014] The effect achieved by the above components is that the pressure detection gauge is provided for detecting pressure; and the placing seat is provided for placing the pressure detection gauge.

[0015] Preferably, the outer periphery of the connecting part and the inner part of the valve seat are provided with threads for connection.

[0016] The effect achieved by the above components is that the threads are provided, so that the user can conveniently disassemble or fixedly install.

[0017] Compared with the prior art, the pressure gauge body is provided for detecting pressure; the connecting part is provided for connecting with the valve seat; the fixed part is provided, and the sealing assembly is arranged on the fixed part; when the user connects the pressure gauge body with the valve seat, the sealing assembly between the pressure gauge body and the valve seat is improved; the radius of the fixed part is set to be at least not less than the radius of the connection part of the valve seat, so that the effect of preventing gas leakage is achieved; the user can also directly connect the pressure gauge body with the valve seat, so that the pressure gauge body can be replaced when it is damaged; the structure is simple, the use is convenient, the manufacturing process is simple, the installation is convenient and easy to disassemble, and the sealing performance is good. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a structural schematic view of the utility model;

[0019] Fig. 2 is a disassembly structural schematic view of the utility model.

[0020] Sign: 1, pressure gauge main body; 2, connecting portion; 3, fixed part; 4, first fixed position; 5, second fixed position; 6, sealing assembly; 7, sealing washer; 8, sealing ring; 9, pressure detection gauge; 10, placing seat. DETAILED DESCRIPTION

[0021] The following will disclose multiple embodiments of the utility model with drawings, for the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be drawn in a simple schematic manner in the drawings.

[0022] It should be noted that all directional indications in the embodiments of the utility model, such as up, down, left, right, front, back, etc. are used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, in addition to being used to represent the orientation or position relationship, the above-mentioned part of the term can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases, and for ordinary skilled persons in the art, the specific meaning of these terms in the utility model can be understood according to the specific situation.

[0024] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected", "sleeved" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. The connection mode involved in the present application is prior art, without any improvement, and belongs to the common knowledge of those skilled in the art. For those skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.

[0025] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application, which is only to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0026] As shown in Figs. 1-2 The utility model provides a sealing structure of pressure gauge, including pressure gauge main part 1, be arranged with connecting portion 2 on pressure gauge main part 1, pressure gauge main part 1 is connected with valve seat through connecting portion 2, the upper end of connecting portion 2 is arranged with fixed part 3, fixed part 3 is connected with valve seat when pressure gauge main part 1 is connected with valve seat, the radius of fixed part 3 is at least not less than the radius of valve seat and connecting portion 2 junction, be arranged with sealing assembly 6 between fixed part 3 and connecting portion 2. Through setting pressure gauge main part 1 for detecting pressure, through setting connecting portion 2, for and valve seat are connected, through setting fixed part 3, and sealing assembly 6 is set on fixed part 3, when pressure gauge main part 1 is connected with valve seat, the user improves sealing assembly 6 between pressure gauge main part 1 and valve seat, the radius of fixed part 3 is set as at least not less than the radius of valve seat junction, plays the effect of preventing gas leakage, the user can also directly connect pressure gauge main part 1 with valve seat, so that pressure gauge main part 1 can be replaced when being damaged, the setting structure is simple, uses, the manufacturing procedure is simple, and the installation is convenient and easy to disassemble, and the sealing property is good.

[0027] The fixed part 3 includes a first fixing position 4 and a second fixing position 5, the first fixing position 4 is arranged above the second fixing position 5, and the second fixing position 5 is close to the connecting portion 2. The fixed part 3 is arranged for placing the sealing assembly 6, and the first fixing position 4 and the second fixing position 5 are arranged for placing different sealing assemblies 6.

[0028] The sealing assembly 6 includes at least one sealing washer 7 and a sealing ring 8, the sealing ring 8 is arranged on the second fixing position 5, and the sealing washer 7 is arranged on the first fixing position 4. The sealing washer 7 and the sealing ring 8 are arranged for sealing work, the sealing ring 8 is arranged on the second fixing position 5, and the sealing washer 7 is arranged on the first fixing position 4, so that the sealing assembly 6 is better fixed on the fixed part 3.

[0029] The sealing ring 8 is arranged in the valve seat when the pressure gauge body 1 is connected with the valve seat. The sealing ring 8 is arranged in the valve seat when the sealing gasket 7 is connected with the valve seat, and the sealing ring 8 is connected with the inner wall of the valve seat, so that the sealing effect is better when the pressure gauge body 1 is connected with the valve seat.

[0030] The pressure detection table 9 is arranged on the placing seat 10. The fixing part 3 and the connecting part 2 are arranged on the opposite side of the placing seat 10 for placing the pressure detection table 9. The pressure detection table 9 is arranged for detecting pressure. The placing seat 10 is arranged for placing the pressure detection table 9.

[0031] The connecting part 2 is provided with threads on the outer periphery for connection with the valve seat. The threads are arranged for convenient disassembly or fixed installation.

[0032] In the embodiment, the sealing assembly 6 is arranged on the connecting part 2.

[0033] When the user selects to use the pressure gauge body 1, the threads arranged on the connecting part 2 are connected with the threads in the valve seat. Because the radius of the fixing part 3 is at least not less than the radius of the valve seat connection, the user can rotate the pressure gauge body 1 when connecting. Because the sealing assembly 6 is arranged, the sealing effect between the pressure gauge body 1 and the valve seat is good.

[0034] The pressure gauge body 1 can be rotated when it is loose, and then it will be tightened for sealing. When the pressure gauge body 1 needs to be replaced, it can also be disassembled and replaced.

[0035] The pressure gauge body 1 can be used on any device or component that needs to detect pressure.

[0036] The valve seat, the valve seat connection, and the threads in the valve seat are conventional and well-known structures for those skilled in the art, so no more redundant description and drawing explanation are needed.

[0037] In the description of the present specification, the terms "one embodiment", "some embodiments", "example", "specific example" and the like refer to the specific feature, structure or characteristic described in connection with the embodiment.

[0038] The description of the term "an example" or "some examples" or the like means that a particular feature, structure, material or characteristic described in connection with the example is included in at least one embodiment or example of the present application. In this specification, the illustrative representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and combine the features of different embodiments or examples described in the specification and the features of different embodiments or examples, without contradiction.

[0039] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet, welding and sticking in the prior art, which will not be described in detail here.

[0040] The above is only the preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, various modifications and changes can be made in the specific implementation mode and application range, and the content of the specification should not be understood as the limitation of the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A sealing structure of a pressure gauge, comprising a pressure gauge body, a connecting portion arranged on the pressure gauge body; the pressure gauge body is connected with a valve seat through the connecting portion, characterized in that: The upper end of the connecting part is provided with a fixing part; the fixing part is in contact with the valve seat when the pressure gauge body is connected with the valve seat; the radius of the fixing part is at least not less than the radius of the connecting part with the valve seat; a sealing assembly is arranged between the fixing part and the connecting part.

2. A seal for a pressure gauge as defined in claim 1, wherein: The fixing part comprises a first fixing part and a second fixing part; the first fixing part is arranged above the second fixing part; the second fixing part is close to the connecting part.

3. A seal for a pressure gauge as defined in claim 2, wherein: The sealing assembly comprises at least one sealing washer and a sealing ring; the sealing ring is arranged on the second fixing part; the sealing washer is arranged on the first fixing part.

4. A seal for a pressure gauge as defined in claim 3, wherein: When the pressure gauge body is connected with the valve seat, the sealing washer is in contact with the valve seat, and the sealing ring is arranged in the valve seat.

5. The seal structure for a pressure gauge according to claim 1, wherein: The pressure gauge body is provided with a placing seat and a pressure detection gauge; the pressure detection gauge is arranged on the placing seat; the fixing part and the connecting part are arranged on the opposite side of the placing seat for placing the pressure detection gauge.

6. The seal for a pressure gauge of claim 1, wherein: The outer periphery of the connecting part and the inner part of the valve seat are provided with threads for connection.

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