A pressure gauge

Abstract

The utility model relates to pressure gauge technical field, concretely is a pressure gauge, including the casing, the inside setting of casing is the head, still setting the mounting block in the casing, the mounting block is connected with the head, the mounting block rear end installs the joint, the rear shell rear side surface sets up the exit of joint that can pull out, the joint is used for connecting with the air inlet pipe, the front end of mounting block sets up the pressure relief subassembly, the casing front side surface is equipped with the first through -hole with the dial part of head's correspondence, observes the pressure numerical value on the dial through the first through -hole, the side end of casing forms the bending part, and the fixed hole is set up in the bending part, and the fixed hole of bending part and fixed screw etc. Structure cooperation can be convenient for fixed to the equipment side portion with this device, the switch, button, dial of this device are all towards the front after fixing, the joint is towards the rear side portion, this design can realize this device to occupy less installation space, and the whole is more simple and beautiful.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, and specifically to a pressure gauge. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than ambient pressure. Its applications are extremely widespread, found in almost all industrial processes and scientific research fields. It is ubiquitous in areas such as heat pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. During use, pressure gauges need to be installed on equipment; however, most current pressure gauges are currently installed vertically on top of equipment, which not only takes up space but also results in an unstable installation structure and limits installation options.

[0003] In addition, pressure cookers can cause pointer deviation due to instantaneous overpressure impacts, affecting the accuracy of pressure gauge readings. Existing solutions typically involve installing complex pressure stabilizing components or creating fine holes, resulting in complex structures and poor performance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pressure gauge.

[0005] The technical solution of this utility model is as follows: This utility model provides a pressure gauge, including a housing, a gauge head inside the housing, a mounting block inside the housing connected to the gauge head, a connector mounted at the rear end of the mounting block, an outlet for the pull-out connector on the rear side of the rear housing for connecting to an air inlet pipe, a pressure relief component at the front end of the mounting block, a first through hole corresponding to the dial portion of the gauge head on the front side of the housing for observing the pressure value on the dial through the first through hole, and a bent portion formed on the side end of the housing with a fixing hole.

[0006] Furthermore, the mounting block has a first cavity inside, and the top outlet of the first cavity is connected to the meter head through a first connecting pipe. The mounting block also has a second cavity inside, and a connector is installed at the rear end of the second cavity. The first cavity and the second cavity are connected through a spiral gap capillary channel.

[0007] Furthermore, a threaded hole is provided on one side of the mounting block. The inner end of the threaded hole communicates with the second cavity, and the threaded hole part intersects with the first cavity. A bolt is installed in the threaded hole, and the bolt closes the outer end of the threaded hole. The spiral gap between the first cavity and the second cavity forms a spiral gap capillary channel.

[0008] Furthermore, the pressure relief assembly includes a pressure relief valve body, with a mounting hole for mounting the pressure relief valve body at the front end of the second cavity, and the inner end of the pressure relief valve body passing through the mounting hole and located in the second cavity with a sealing plug.

[0009] Furthermore, the outer end of the pressure relief valve body is provided with a pressure relief gas impact surface facing the mounting hole.

[0010] Furthermore, symmetrical venting grooves are provided on both sides of the outer end of the mounting hole.

[0011] Furthermore, a button is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the impact surface of the pressure relief gas.

[0012] Furthermore, the joint is L-shaped and at least partly deformable.

[0013] Furthermore, the housing includes a front housing and a rear housing. The front housing has a second through hole corresponding to the position of the pressure relief assembly, and a third through hole is also provided in front of the front housing. A switch connected to the meter head is installed inside the third through hole, and the outer end of the switch extends out from the outside of the third through hole.

[0014] Furthermore, a sealing cap is fitted onto the outer end of the switch, and the inner end of the sealing cap is located inside the third through hole and folds outward to form a flange. The flange at the inner end of the sealing cap fits into the position of the inner end of the third through hole.

[0015] The beneficial effects achieved by this utility model are as follows: This utility model allows the device to be easily fixed to the side of the equipment by using the fixing holes and fixing screws in the bent part. After fixing, the switch, button and dial of the device face forward, and the connector faces the rear side. This design allows the device to occupy less installation space and is more concise and beautiful overall.

[0016] The gas entering through the intake pipe first enters the second cavity, then passes through the spiral gap into the first cavity, and finally enters the gauge to measure pressure. As the air passes through the spiral gap, the flow rate is slowed down, reducing fluctuations in the gauge reading caused by unstable airflow. This is applicable to hydraulic shock absorption systems in automobiles, where pressure may experience instantaneous overpressure shocks during driving. This device can effectively reduce the fluctuations in pressure readings caused by instantaneous overpressure shocks, allowing for better pressure readings. This design does not require other complex pressure stabilization structures, making it simple in structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 This is a schematic diagram of the left-side structure of this utility model; Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a schematic diagram of the connection structure between the mounting block and the meter head of this utility model; Figure 6 It is along Figure 5A cross-sectional view of the FF line; Figure 7 yes Figure 5 The left view; Figure 8 It is along Figure 7 A cross-sectional view of the EE line; Figure 9 This is a schematic diagram of the venting groove on the mounting block; Figure 10 The mounting block corresponds to the cross-sectional view of the second cavity. Detailed Implementation

[0018] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0019] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] like Figures 1-10As shown, this utility model provides a pressure-stabilizing pressure gauge, including a housing, which includes a front housing 1 and a rear housing 2. A gauge head 3 is disposed inside the housing, and the gauge head 3 has a pressure measuring component. The front side of the front housing has a first through hole 4 corresponding to the dial portion of the gauge head, through which the pressure value on the dial is observed. A mounting block 5 is also disposed inside the housing, and the mounting block has a first cavity 6 inside. The top outlet of the first cavity 6 is connected to the gauge head 3 through a first connecting pipe 7. A second cavity 8 is also disposed inside the mounting block 5, and a connector 9 is installed at the rear end of the second cavity 8, through which it can be easily connected to an air inlet pipe. There is a connecting pipe between the pressure measuring component and the connector, and the pipe includes at least a portion of a spiral gap capillary channel. The front end of the mounting block... A pressure relief assembly is provided, with a threaded hole 10 on one side of the mounting block. The inner end of the threaded hole 10 communicates with the second cavity, and part of the threaded hole 10 intersects with the first cavity. A bolt 11 is installed in the threaded hole 10, and the bolt 11 seals the outer end of the threaded hole. The first cavity and the second cavity are connected through a capillary channel with a spiral gap between the threaded hole and the bolt. The gas coming in from the intake pipe first enters the second cavity, then enters the first cavity through the spiral gap, and finally enters the meter head to act on the pressure measuring component to achieve pressure measurement. Before the air acts on the pressure measuring component, the flow rate can be slowed down during the process of passing through the capillary channel with the spiral gap, reducing the fluctuation of the meter reading caused by unstable airflow. This design does not require other complex pressure stabilization structures and has a simple structure.

[0022] The pressure relief assembly includes a pressure relief valve body 12. A mounting hole for mounting the pressure relief valve body is opened at the front end of the second cavity. The inner end of the pressure relief valve body 12 passes through the mounting hole and is located in the second cavity, where a sealing plug 13 is provided. When the pressure relief valve body 12 is in the outer limit position, the sealing plug seals the inner end of the mounting hole to achieve the sealing of the second cavity. When the pressure relief valve body 12 is pressed inward, the sealing plug 13 separates from the inner end of the mounting hole to achieve pressure relief. The outer end of the pressure relief valve body is provided with a pressure relief gas impact surface 14 facing the mounting hole. When pressure is relieved, the high-speed gas ejected from the mounting hole impacts the pressure relief gas impact surface 14 and applies an outward thrust to the pressure relief valve body. When the user releases the outer end of the pressure relief valve body, this thrust can cause the pressure relief valve body to move outward and reset.

[0023] Symmetrical exhaust grooves 15 are provided on both sides of the outer end of the mounting hole. With this design, even if the pressure relief valve body 12 is pressed to the inner limit position, the mounting hole will not be blocked, which can ensure smooth gas release. It can also ensure that when the pressure relief valve body 12 is pressed to the inner limit position, the discharged gas will impact the pressure relief gas impact surface 14 more concentratedly. The exhaust is smooth and the impact force is sufficient to ensure the stability of the pressure relief valve body moving to the outside and resetting.

[0024] A button 22 is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the pressure relief gas impact surface 14.

[0025] The rear side of the rear shell is provided with an outlet for a pull-out connector 9. The connector 9 is L-shaped and at least part of it is deformable. When the connector is not connected to an external air tube, it can be hidden inside the outlet. When needed, the connector can be pulled out from inside the outlet.

[0026] A second through hole 16 is provided on the front housing corresponding to the pressure relief component. A third through hole 17 is also provided on the front of the front housing. A switch 18 is installed inside the third through hole. The outer end of the switch extends out of the third through hole 17. A sealing cap 19 is fitted onto the outer end of the switch 18. The inner end of the sealing cap is located inside the third through hole 17 and is folded outward to form a flange. The flange at the inner end of the sealing cap 19 fits against the inner end of the third through hole. This can prevent moisture and other impurities from entering the housing corresponding to the switch 18, ensuring safety during use, such as preventing electric shock, and also improving the service life of the device. The switch is connected to the control unit. When the user starts the switch, the control unit starts to pressurize. This control unit can be an active air pump structure such as an air pump, or a water supply structure for a pressure tank, etc. When the pressure gauge indicates that the specified pressure has been reached, the control unit can be turned off by the switch to stop pressurizing.

[0027] The side end of the front shell 1 forms a bent part 20, and the bent part 20 has a fixing hole 21. The device can be easily fixed to the side of the equipment by means of fixing holes 21 and fixing screws and other structures. After fixing, the switch, button and dial of the device face forward, and the connector 9 faces the rear side. This design can make the device occupy less installation space and the overall design is simpler and more beautiful.

[0028] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A pressure gauge, characterized in that: The device includes a housing, an internal gauge, and a mounting block connected to the gauge. A connector is mounted at the rear end of the mounting block, and an outlet for the pull-out connector is located on the rear side of the housing. The connector is used to connect to the air intake pipe. A pressure relief assembly is located at the front end of the mounting block. A first through hole corresponding to the dial portion of the gauge is located on the front side of the housing, through which the pressure value on the dial is observed. A bend is formed on the side end of the housing, and a fixing hole is provided in the bend.

2. A pressure gauge according to claim 1, characterized in that: The mounting block has a first cavity inside, and the top outlet of the first cavity is connected to the meter head through a first connecting pipe. The mounting block also has a second cavity inside, and the rear end of the second cavity is equipped with a connector. The first cavity and the second cavity are connected by a spiral gap capillary channel.

3. A pressure gauge according to claim 2, characterized in that: The mounting block has a threaded hole on one side. The inner end of the threaded hole is connected to the second cavity, and the threaded hole part intersects with the first cavity. A bolt is installed in the threaded hole, and the bolt closes the outer end of the threaded hole. The spiral gap between the first cavity and the second cavity forms a spiral gap capillary channel.

4. A pressure gauge according to claim 3, characterized in that: The pressure relief assembly includes a pressure relief valve body. The front end of the second cavity has a mounting hole for mounting the pressure relief valve body. The inner end of the pressure relief valve body passes through the mounting hole and is located in the second cavity, where a sealing plug is installed.

5. A pressure gauge according to claim 4, characterized in that: The outer end of the pressure relief valve body is provided with a pressure relief gas impact surface facing the mounting hole.

6. A pressure gauge according to claim 5, characterized in that: Symmetrical venting grooves are provided on both sides of the outer end of the mounting hole.

7. A pressure gauge according to claim 5, characterized in that: A button is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the impact surface of the pressure relief gas.

8. A pressure gauge according to claim 1, characterized in that: The joint is L-shaped and at least part of it is deformable.

9. A pressure gauge according to claim 8, characterized in that: The housing includes a front housing and a rear housing. The front housing has a second through hole corresponding to the position of the pressure relief component. A third through hole is also opened in front of the front housing. A switch connected to the meter head is installed inside the third through hole, and the outer end of the switch extends out from the outside of the third through hole.

10. A pressure gauge according to claim 9, characterized in that: A sealing cap is fitted onto the outer end of the switch. The inner end of the sealing cap is located inside the third through hole and folds outward to form a flange. The flange at the inner end of the sealing cap fits into the position of the inner end of the third through hole.

Images