Alarm pressure gauge

Abstract

The utility model provides an alarm pressure gauge, which is characterized in that a high-pressure value pointer, a low-pressure value pointer and a pressure pointer are all made of conductive metal materials, respectively point to pressure scales from the center of a dial plate along the radial direction of the dial plate with free ends, and are arranged at intervals along the circumferential direction around the central axis of a rotating shaft of the center of the dial plate; the high-pressure-value pointer and the low-pressure-value pointer point to a set high pressure value and a set low pressure value respectively, keep still when the pressure gauge works, are connected into an alarm circuit respectively, and are shifted by external force to be adjustable in position around the central axis of the rotating shaft in the circumferential direction; the alarm circuit is switched on when the pressure pointer is in contact with the high-pressure-value pointer or the low-pressure-value pointer, alarms through the alarm lamp and the horn when the alarm circuit is switched on, and is switched off when the pressure pointer is separated from the high-pressure-value pointer or the low-pressure-value pointer. The utility model provides a brand new solution for the realization of the alarm function of the pressure gauge, and has the advantages of wide application range and low implementation difficulty.

Description

Technical Field

[0001] The utility model relates to an alarm pressure gauge. Background Art

[0002] The pressure gauge uses elastic elements as sensitive elements. Its function is to show customers pressure values ​​that are higher than the current environment. It is widely used in areas such as oil and gas transmission, water supply and gas supply, etc., especially in industrial process control and technical measurement.

[0003] In some industrial or scientific research fields, it is necessary to pay attention to the pressure of the pressure gauge to avoid the pressure being higher or lower than the equipment's usage requirements. At this time, it is necessary to add an alarm function at this location. Usually, the alarm is realized through a pressure sensor to remind personnel. The pressure sensor needs to be powered by a voltage of 220V or above and connected to a control circuit to realize the alarm. The reality is that some areas do not have a voltage of 220V or above and a control circuit to realize the alarm function, which brings a lot of inconvenience to industrial processes and scientific research fields. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes an alarm pressure gauge, which provides a new solution for realizing the alarm function of the pressure gauge, has a wide range of applications and is easy to implement.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An alarm pressure gauge, the pressure gauge reads the real-time pressure value through the pressure pointer pointing to the pressure scale, and its structural characteristics are:

[0007] A high pressure value pointer and a low pressure value pointer are provided. The high pressure value pointer, the low pressure value pointer and the pressure pointer are all made of conductive metal. They point to the pressure scale with their free ends along the radial direction of the dial from the center of the dial. The central axis of the rotating shaft around the center of the dial is arranged at intervals along the circumferential direction. The high pressure value pointer and the low pressure value pointer point to the set high pressure value and the set low pressure value respectively. When the pressure gauge is working, they remain stationary. When they are turned around the central axis of the rotating shaft in the circumferential direction, their positions can be adjusted. An arc hole coaxially arranged with the rotating shaft is provided on the front of the dial as an operating hole for turning the high pressure value pointer and the low pressure value pointer; the pressure pointer rotates synchronously with the rotating shaft, and is located between the high pressure value pointer and the low pressure value pointer along the circumferential direction, and can contact the high pressure value pointer or the low pressure value pointer;

[0008] An alarm circuit is provided. A horn, an alarm lamp and a battery for power supply are provided in the alarm circuit. The high-pressure value pointer, the low-pressure value pointer and the pressure pointer are respectively connected to the alarm circuit. The alarm circuit is turned on when the pressure pointer contacts the high-pressure value pointer or the low-pressure value pointer, and sounds an alarm through the alarm lamp and the horn when turned on, and is turned off when the pressure pointer separates from the high-pressure value pointer or the low-pressure value pointer.

[0009] The structural features of the present utility model also lie in:

[0010] The high-pressure value pointer and the low-pressure value pointer are arranged at intervals along the axial direction of the rotating shaft. The pressure pointer is in a multi-segment bent shape, including an inner horizontal segment near the rotating shaft side and an outer horizontal segment far from the rotating shaft side, and further includes a transition vertical segment perpendicular and connecting the inner horizontal segment and the outer horizontal segment. The high-pressure value pointer and the low-pressure value pointer are located between the inner horizontal segment and the outer horizontal segment along the axial direction of the rotating shaft. When the pressure pointer points to the set high-pressure value or the set low-pressure value through the end of the outer horizontal segment, it contacts the high-pressure value pointer or the low-pressure value pointer through the transition vertical segment.

[0011] The rotating shaft is provided at the center of the dial. The rotating shaft is coaxially and centrally arranged in the shaft sleeve and can rotate around the central axis. The shaft sleeve is a fixed component independent of the rotating shaft; the pressure pointer is coaxially installed on the rotating shaft and rotates synchronously with the rotating shaft. The ends of the high-pressure value pointer and the low-pressure value pointer near the rotating shaft are respectively clamped on the shaft sleeve through metal washers and plastic liners.

[0012] Compared with the prior art, the beneficial effects of the present utility model are reflected in:

[0013] The present utility model is powered by a battery. By using the synchronous rotation of the pressure pointer with the rotating shaft to contact the high-pressure value pointer or the low-pressure value pointer, the alarm circuit can be triggered, and an automatic alarm can be realized through the alarm lamp and the horn when the pressure reaches the set high-pressure value or the set low-pressure value, expanding the application range of the alarm pressure gauge. There is no need to configure a pressure sensor, and it is especially suitable for areas that do not have a 220V power supply and a control circuit. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the back of the present utility model;

[0015] Figure 2 is a schematic structural view of the front of the present utility model;

[0016] Figure 3 is an assembly schematic view of each pointer, the rotating shaft and the shaft sleeve;

[0017] Figure 4 is an exploded structural view of each pointer, the rotating shaft and the shaft sleeve;

[0018] Figure 5 It is a structural diagram of the alarm circuit.

[0019] In the figure, 1 is a glass sheet; 21 is a high pressure value pointer; 22 is a low pressure value pointer; 3 is a stop end cover; 4 is a pressure pointer; 5 is an alarm light; 6 is a watch case; 7 is a speaker; 8 is a plastic shell; 9 is a battery box cover; 10 is a metal gasket; 11 is a plastic liner; 12 is an alarm circuit; 13 is a battery; 14 is an arc hole; 15 is an electric wire; 16 is a rotating shaft; 17 is a bushing; 18 is a pressure scale. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The pressure gauge reads the real-time pressure value through the pressure pointer 4 pointing to the pressure scale 18, please refer to Figures 1 to 4 , the structure of the alarm pressure gauge of this embodiment is as follows:

[0022] A high pressure value pointer 21 and a low pressure value pointer 22 are provided. The high pressure value pointer 21, the low pressure value pointer 22 and the pressure pointer 4 are all made of conductive metal. They point to the pressure scale 18 with their free ends along the radial direction of the dial from the center of the dial. The central axis of the rotating shaft 16 surrounding the center of the dial is arranged at intervals along the circumferential direction. The high pressure value pointer 21 and the low pressure value pointer 22 point to the set high pressure value and the set low pressure value respectively. When the pressure gauge is working, they remain stationary. When they are moved by external force, their positions along the circumferential direction around the central axis of the rotating shaft 16 are adjustable. An arc hole 14 arranged coaxially with the rotating shaft 16 is provided on the front of the dial as an operating hole for moving the high pressure value pointer 21 and the low pressure value pointer 22. The pressure pointer 4 rotates synchronously with the rotating shaft 16, and is located between the high pressure value pointer 21 and the low pressure value pointer 22 along the circumferential direction, and can contact the high pressure value pointer 21 or the low pressure value pointer 22.

[0023] An alarm circuit 12 is provided, in which a speaker 7, an alarm light 5 and a battery 13 for power supply are provided. A high pressure value pointer 21, a low pressure value pointer 22 and a pressure pointer 4 are respectively connected to the alarm circuit 12 through wires 15. The alarm circuit 12 is connected when the pressure pointer 4 contacts the high pressure value pointer 21 or the low pressure value pointer 22, and an alarm is sounded through the alarm light 5 and the speaker 7 when connected, and is disconnected when the pressure pointer 4 is separated from the high pressure value pointer 21 or the low pressure value pointer 22.

[0024] In a specific implementation, the corresponding structural setting of the alarm pressure gauge also includes:

[0025] The front of the dial is encapsulated by a glass sheet 1 clamped on the watch case 6. The above-mentioned arc hole 14 is opened on the glass sheet 1 according to the position distribution of the pressure scale 18 and the corresponding central angle range, so that when the operator uses a tool to pass through the arc hole 14 to move the high pressure value pointer 21 or the low pressure value pointer 22 under the glass sheet 1, the high pressure value pointer 21 and the low pressure value pointer 22 can be adjusted in the entire pressure scale 18 and along the circumferential direction.

[0026] The high pressure value pointer 21 and the low pressure value pointer 22 are arranged at intervals along the axial direction of the rotating shaft 16. The pressure pointer 4 is in a multi-section bent shape, including an inner horizontal section close to the rotating shaft 16 side, an outer horizontal section away from the rotating shaft 16 side, and a transition vertical section that is perpendicular and connected between the inner horizontal section and the outer horizontal section. The high pressure value pointer 21 and the low pressure value pointer 22 are located between the inner horizontal section and the outer horizontal section along the axial direction of the rotating shaft 16. When the pressure pointer 4 points to the set high pressure value or the set low pressure value through the end of the outer horizontal section, the transition vertical section contacts the high pressure value pointer 21 or the low pressure value pointer 22.

[0027] A rotating shaft 16 is provided in the center of the dial. The rotating shaft 16 is coaxially and centrally inserted in the shaft sleeve 17 and can rotate around the central axis. The shaft sleeve 17 is a fixed component independent of the rotating shaft 16. The pressure pointer 4 is coaxially installed on the rotating shaft 16 and rotates synchronously with the rotating shaft 16. The high pressure value pointer 21 and the low pressure value pointer 22 are clamped on the shaft sleeve 17 at one end close to the rotating shaft 16 through the metal washer 10 and the plastic liner 11. The metal washer 10 and the plastic liner 11 are annular. The coaxial sleeve 17 is installed on the shaft sleeve 17, and the high pressure value pointer 21 or the low pressure value pointer 22 is clamped therein along the axial direction. The high pressure value pointer 21 and the low pressure value pointer 22 are moved by external force and can move in the circumferential direction around the central axis of the rotating shaft 16 relative to the shaft sleeve 17. The pressure pointer 4 is also equipped with a matching metal washer 10 and a plastic liner 11, and is clamped on the rotating shaft 16 through the metal washer 10 and the plastic liner 11 of matching specifications. One end of the rotating shaft 16 is connected to a torsion spring, and the other end is installed with a stop end cover 3.

[0028] Figure 5 The alarm circuit 12 is shown. In the circuit, R1, R2, R3, R4, and R5 are resistors, RG is a photoresistor, VT1 and VT2 are transistors, and C1 is a capacitor.

[0029] The alarm light 5 is arranged on the watch case 6 on the front of the dial, the alarm circuit 12 is built into the back of the dial and is covered by a plastic shell 8, a detachable battery box cover 9 is provided on the plastic shell 8, the battery box cover 9 is encapsulated where the battery 13 is located, and the speaker 7 is arranged on the plastic shell 8.

[0030] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An alarm pressure gauge, which reads the real-time pressure value through a pressure pointer pointing to the pressure scale, and is characterized by: A high pressure value pointer and a low pressure value pointer are provided. The high pressure value pointer, the low pressure value pointer and the pressure pointer are all made of conductive metal. They point to the pressure scale with their free ends along the radial direction of the dial from the center of the dial. The central axis of the rotating shaft around the center of the dial is arranged at intervals along the circumferential direction. The high pressure value pointer and the low pressure value pointer point to the set high pressure value and the set low pressure value respectively. When the pressure gauge is working, they remain stationary. When they are turned around the central axis of the rotating shaft in the circumferential direction, their positions can be adjusted. An arc hole coaxially arranged with the rotating shaft is provided on the front of the dial as an operating hole for turning the high pressure value pointer and the low pressure value pointer; the pressure pointer rotates synchronously with the rotating shaft, and is located between the high pressure value pointer and the low pressure value pointer along the circumferential direction, and can contact the high pressure value pointer or the low pressure value pointer; An alarm circuit is provided, in which a horn, an alarm light and a battery for power supply are provided. A high pressure value pointer, a low pressure value pointer and a pressure pointer are respectively connected to the alarm circuit. The alarm circuit is connected when the pressure pointer contacts the high pressure value pointer or the low pressure value pointer. When connected, an alarm is sounded through the alarm light and the horn, and is disconnected when the pressure pointer is separated from the high pressure value pointer or the low pressure value pointer.

2. The alarm pressure gauge according to claim 1 is characterized in that: The high pressure value pointer and the low pressure value pointer are arranged at intervals along the axial direction of the rotating shaft. The pressure pointer is in a multi-section bent shape, including an inner horizontal section close to the rotating shaft side, an outer horizontal section away from the rotating shaft side, and a transition vertical section that is perpendicular to and connected between the inner horizontal section and the outer horizontal section. The high pressure value pointer and the low pressure value pointer are located between the inner horizontal section and the outer horizontal section along the axial direction of the rotating shaft. When the pressure pointer points to the set high pressure value or the set low pressure value through the end of the outer horizontal section, the transition vertical section contacts the high pressure value pointer or the low pressure value pointer.

3. The alarm pressure gauge according to claim 1 is characterized in that: The rotating shaft is provided in the center of the dial. The rotating shaft is coaxially and centrally inserted into the shaft sleeve and can rotate around the central axis. The shaft sleeve is a fixed component independent of the rotating shaft. The pressure pointer is coaxially installed on the rotating shaft and rotates synchronously with the rotating shaft. The high pressure value pointer and the low pressure value pointer are clamped on the shaft sleeve at one end near the rotating shaft through a metal washer and a plastic liner respectively.

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