A pressure gauge

Abstract

The utility model provides a pressure gauge, including pressure gauge head, the front surface of pressure gauge head is connected with ring cover, glass piece is installed in ring cover, the one side middle part position of ring cover is connected with the convex ring department away from pressure gauge head, the cross section of convex ring department is semicircle, two U type boards are set up on ring cover, one end of U type board is connected and is fixed with semicircle department, the semicircle department sets up on convex ring department, the one end of semicircle department is installed away from U type board's pointer department, the pointer department is in sliding contact with glass piece, the pointer department is along the radial direction arrangement of pressure gauge head, one side middle part position screw connection of U type board is used for the positioning screw of limiting the relative position of U type board and ring cover, the utility model has the beneficial effect that realizes according to the lowest, highest working pressure setting of container normal working range, warning range and dangerous range in pressure gauge.

Description

Technical Field

[0001] This utility model is a pressure gauge, belonging to the field of pressure gauges. Background Technology

[0002] A three-color pressure gauge is a commonly used instrument for displaying and monitoring pressure in a system. Its key feature is the use of three different colors to represent different pressure ranges, allowing users to quickly and intuitively understand the system's pressure status. The three colors are typically green, yellow, and red. Green: Indicates the normal operating range; the system is in a safe state. Yellow: Indicates the warning range; the system may have potential problems and requires attention. Red: Indicates the danger range; the system has exceeded the safe range and immediate action is needed. While the ranges of the three colors in a three-color pressure gauge are limited after production, in actual use, different containers have different minimum and maximum operating pressures. Therefore, fixing the ranges of the three colors in the pressure gauge to represent different pressure ranges cannot meet the needs of different containers for setting pressure status ranges. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a pressure gauge to solve the problems mentioned in the background art. This utility model realizes the setting of normal working range, warning range and danger range of the pressure gauge according to the minimum and maximum working pressure of the container.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pressure gauge includes a pressure gauge head. A ring cover is threadedly connected to the front of the pressure gauge head, and a glass plate is installed inside the ring cover. A convex ring portion is connected to the center of the side of the ring cover away from the pressure gauge head. The convex ring portion has a semi-circular cross-section. Two U-shaped plates are fitted on the ring cover. A semi-circular portion is fixedly connected to one end of each U-shaped plate and is fitted onto the convex ring portion. A pointer portion is installed at the end of the semi-circular portion away from the U-shaped plate. The pointer portion slides in contact with the glass plate and is arranged along the radial direction of the pressure gauge head. A positioning screw for limiting the relative position of the U-shaped plate and the ring cover is threadedly connected to the center of one side of the U-shaped plate.

[0005] Furthermore, a through hole is provided in the middle of one side of the U-shaped plate. The through hole is arranged along the radial direction of the ring cover. A threaded sleeve is provided on the outside of the through hole, which is concentrically arranged with the through hole. One end of the threaded sleeve is connected and fixed to the U-shaped plate. The positioning screw is threadedly connected to the threaded sleeve, and one end of the positioning screw passes through the through hole.

[0006] Furthermore, an annular groove is provided on the annular side of the ring cover, and a rubber ring is glued into the annular groove, with one end of the positioning screw in contact with the rubber ring.

[0007] Furthermore, the pointer portion and the semicircular portion are integrally formed, and the semicircular portion and the U-shaped plate are integrally formed.

[0008] Furthermore, a threaded connector is installed at the lower part of the outer surface of the pressure gauge head, and a hexahedron is fitted onto the end of the threaded connector near the pressure gauge head for connection and fixation.

[0009] Furthermore, each of the two parallel sides of the hexahedron is provided with a plug-in groove, the end of the plug-in groove away from the pressure gauge head is closed, a plug-in strip is inserted into the plug-in groove, and a protective plate is provided on each of the two sides of the hexahedron with the plug-in groove, the protective plate being connected and fixed to the plug-in strip.

[0010] Furthermore, the cross-section of the connector strip is "T" shaped, and the cross-section of the connector groove is "T" shaped.

[0011] The beneficial effects of this utility model are:

[0012] 1. When the corners of the hexahedron become worn and can no longer hold the wrench, insert the connector strip into the connector slot to assemble the guard plate and the hexahedron, thereby securing the wrench on the two guard plates and providing a backup method for securing the wrench on the hexahedron.

[0013] 2. Fit the semicircular part onto the convex ring part and secure the U-shaped plate onto the ring cover. At this time, the pointer plate is arranged along the radial direction of the pressure gauge head, allowing the U-shaped plate to slide along the ring cover, thereby changing the distance between the two pointer parts. After the two pointer parts move to the desired position, tighten the positioning screw to make the positioning screw contact the rubber ring. The rubber ring increases the stability of the relative position of the U-shaped plate and the ring cover by limiting the positioning screw. In this way, the structure formed by the convex ring part and the semicircular part cooperates with the positioning screw to restrict the relative position of the U-shaped plate and the ring cover, thereby setting the normal working range, warning range, and danger range of the pressure gauge according to the minimum and maximum working pressure of the container.

[0014] 3. Screw the positioning screw into the threaded sleeve to locally increase the thickness of the U-shaped plate where the positioning screw is installed, without having to add a U-shaped plate. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a pressure gauge according to the present invention;

[0017] Figure 2 This is a perspective view of a pressure gauge according to the present invention.

[0018] Figure 3 This is an assembly diagram of a threaded connector, ring cover, and pressure gauge head in a pressure gauge according to the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly of the pointer part, the semi-circular part and the U-shaped plate in a pressure gauge according to the present invention;

[0020] Figure 5 This is a schematic diagram of the assembly of the connector strip and the protective plate in a pressure gauge according to the present invention;

[0021] In the diagram: 1-pressure gauge head, 2-rubber ring, 3-ring cover, 4-glass plate, 5-convex ring, 6-hexahedron, 7-threaded connector, 8-pointer part, 9-semicircular part, 10-U-shaped plate, 11-threaded sleeve, 12-positioning screw, 13-protective plate, 14-annular groove, 15-insertion groove, 16-through hole, 17-insertion strip. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-3 , Figure 5 This utility model provides a technical solution: a pressure gauge, including a pressure gauge head 1, a threaded connector 7 installed on the lower part of the outer surface of the pressure gauge head 1, a hexahedron 6 fitted onto the end of the threaded connector 7 near the pressure gauge head 1 and fixed to the threaded connector 7, the hexahedron 6 having a T-shaped insertion groove 15 on each of the two parallel sides, the insertion groove 15 being closed away from the pressure gauge head 1, and a T-shaped insertion strip 17 inserted into the insertion groove 15, the hexahedron 6 having a protective plate 13 on each of the two sides with the insertion groove 15, the protective plate 13 being fixed to the insertion strip 17, when the corner of the hexahedron 6 is worn and can no longer hold the wrench, the insertion strip 17 is inserted into the insertion groove 15, realizing the assembly of the protective plate 13 and the hexahedron 6, thereby holding the wrench on the two protective plates 13, providing a backup method for holding the wrench on the hexahedron 6.

[0024] See Figures 1-4The pressure gauge head 1 is threadedly connected to a ring cover 3 on its front side. A glass plate 4 is installed inside the ring cover 3. A convex ring 5 is connected to the middle of the side of the ring cover 3 facing away from the pressure gauge head 1. The convex ring 5 has a semi-circular cross-section. Two U-shaped plates 10 are fitted on the ring cover 3. A semi-circular part 9 is fixed to one end of each U-shaped plate 10. The semi-circular part 9 and the U-shaped plate 10 are integrally formed. The semi-circular part 9 is fitted onto the convex ring 5. A pointer part 8 is installed at the end of the semi-circular part 9 away from the U-shaped plate 10. The pointer part 8 and the semi-circular part 9 are integrally formed. The pointer part 8 slides in contact with the glass plate 4. The pointer part 8 is arranged along the radial direction of the pressure gauge head 1. A positioning screw 12 for limiting the relative position of the U-shaped plate 10 and the ring cover 3 is threadedly connected to the middle of one side of the U-shaped plate 10. An annular groove 14 is opened on the annular side of the ring cover 3. The annular groove 14 is through which a... A rubber ring 2 is glued on, and one end of a positioning screw 12 contacts the rubber ring 2, causing the semicircular part 9 to fit onto the convex ring part 5, and the U-shaped plate 10 to be secured to the ring cover 3. At this time, the pointer plate is arranged along the radial direction of the pressure gauge head 1, allowing the U-shaped plate 10 to slide along the ring cover 3, thereby changing the distance between the two pointer parts 8. When the positions of the two pointer parts 8 are moved to the desired positions, the positioning screw 12 is tightened, causing the positioning screw 12 to contact the rubber ring 2. The rubber ring 2, together with the positioning screw 12, restricts the stability of the relative position between the U-shaped plate 10 and the ring cover 3. Thus, the structure formed by the convex ring part 5 and the semicircular part 9 cooperates with the positioning screw 12 to restrict the relative position between the U-shaped plate 10 and the ring cover 3, thereby setting the normal working range, warning range, and danger range of the pressure gauge according to the minimum and maximum working pressure of the container.

[0025] See Figure 1 , Figure 2 and Figure 4 A through hole 16 is provided in the middle of one side of the U-shaped plate 10. The through hole 16 is arranged in the radial direction of the ring cover 3. A threaded sleeve 11 is provided on the outside of the through hole 16 and is arranged concentrically with the through hole 16. One end of the threaded sleeve 11 is connected and fixed to the U-shaped plate 10. The positioning screw 12 is threaded into the threaded sleeve 11. One end of the positioning screw 12 passes through the through hole 16. The positioning screw 12 is screwed into the threaded sleeve 11 to locally increase the thickness of the part of the U-shaped plate 10 where the positioning screw 12 is installed, without the need to increase the thickness of the U-shaped plate 10.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure gauge, comprising a pressure gauge head (1), characterized in that: The pressure gauge head (1) is threaded with a ring cover (3) on the front. A glass plate (4) is installed inside the ring cover (3). A convex ring (5) is connected to the middle of the side of the ring cover (3) away from the pressure gauge head (1). The cross-section of the convex ring (5) is semi-circular. Two U-shaped plates (10) are fitted on the ring cover (3). A semi-circular part (9) is fixed to one end of the U-shaped plate (10). The semi-circular part (9) is fitted on the convex ring (5). A pointer part (8) is installed at the end of the semi-circular part (9) away from the U-shaped plate (10). The pointer part (8) slides in contact with the glass plate (4). The pointer part (8) is arranged along the radial direction of the pressure gauge head (1). A positioning screw (12) for limiting the relative position of the U-shaped plate (10) and the ring cover (3) is threaded to the middle of one side of the U-shaped plate (10).

2. A pressure gauge according to claim 1, characterized in that: A through hole (16) is provided in the middle of one side of the U-shaped plate (10). The through hole (16) is arranged along the radial direction of the ring cover (3). A threaded sleeve (11) is provided on the outside of the through hole (16) and is arranged concentrically with the through hole (16). One end of the threaded sleeve (11) is connected and fixed to the U-shaped plate (10). The positioning screw (12) is threaded in the threaded sleeve (11). One end of the positioning screw (12) passes through the through hole (16).

3. A pressure gauge according to claim 2, characterized in that: The ring cover (3) has an annular groove (14) on its annular side. A rubber ring (2) is glued into the annular groove (14). One end of the positioning screw (12) is in contact with the rubber ring (2).

4. A pressure gauge according to claim 1, characterized in that: The pointer part (8) and the semicircular part (9) are integrally formed, and the semicircular part (9) and the U-shaped plate (10) are integrally formed.

5. A pressure gauge according to claim 1, characterized in that: A threaded connector (7) is installed on the lower part of the outer surface of the pressure gauge head (1). A hexahedron (6) is fitted on one end of the threaded connector (7) near the pressure gauge head (1) and is fixed to the threaded connector (7).

6. A pressure gauge according to claim 5, characterized in that: The hexahedron (6) has two parallel sides with insertion slots (15). The end of the insertion slot (15) away from the pressure gauge head (1) is closed. Insertion strips (17) are inserted into the insertion slots (15). The two sides of the hexahedron (6) with insertion slots (15) are provided with guard plates (13). The guard plates (13) are connected and fixed to the insertion strips (17).

7. A pressure gauge according to claim 6, characterized in that: The cross-section of the connector strip (17) is "T" shaped, and the cross-section of the connector groove (15) is "T" shaped.

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