CN217521909U

CN217521909U - High-reliability pressure switch assembly

Info

Publication number: CN217521909U
Application number: CN202221532766.0U
Authority: CN
Inventors: 黄泽军
Original assignee: Tianjin Jinlefeng Hardware Accessories Co ltd
Current assignee: Tianjin Jinlefeng Hardware Accessories Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-30
Anticipated expiration: 2032-06-20

Abstract

The application discloses a high-reliability pressure switch assembly which comprises a shell, a mounting plate and a movable contact rod mechanism, wherein the mounting plate is arranged on the shell; the shell is hollow and is used for providing a working environment and protection for the whole device; the mounting plate is fixedly arranged in the shell along the length direction of the shell; the mounting plate is rotatably provided with a movable contact rod mechanism. The high-reliability pressure switch assembly has the advantages of good sealing performance, long service life and practicability.

Description

High-reliability pressure switch assembly

Technical Field

The application relates to the technical field of pressure switches, in particular to a pressure switch assembly with high reliability.

Background

The pressure switch adopts a pressure sensor and a transmitting circuit with high precision and high stability, and then realizes the detection, display, alarm and control signal output of medium pressure signals through a special CPU modular signal processing technology. The pressure gauge and the absolute pressure of various gases and liquids are measured and controlled in the fields of petroleum, chemical industry, metallurgy, electric power, water supply and the like, and the pressure gauge and the absolute pressure measuring and controlling instrument is an ideal intelligent measuring and controlling instrument for industrial fields.

The working principle of the pressure switch is as follows: when the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor instantaneously moves, the switch joint is pushed to be switched on or switched off by the connecting guide rod, when the pressure is reduced to or increased to the rated recovery value, the disc is instantaneously reset, the switch automatically resets, or simply, when the measured pressure exceeds the rated value, the free end of the elastic element generates displacement, the switch element is pushed directly or after comparison, the on-off state of the switch element is changed, and the purpose of controlling the measured pressure is achieved. The elastic elements adopted by the pressure switch comprise a single-coil spring tube, a diaphragm box, a corrugated tube and the like.

The existing pressure switch has poor sealing performance, when liquid and gas in a system leak or permeate, the working capacity of the pressure switch is affected to a certain degree, the pressure switch is failed in serious conditions, the danger is high, the reliability is low, the pressure switch is prone to failure, the working state of a moving contact cannot be monitored, and the service life is short.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a pressure switch assembly with good sealing performance, long service life, and high reliability.

The application provides a high-reliability pressure switch assembly which comprises a shell, a mounting plate and a movable contact rod mechanism;

the shell is hollow and is used for providing a working environment and protection for the whole device; the mounting plate is fixedly arranged in the shell along the length direction of the shell; the mounting plate is rotatably provided with a movable contact rod mechanism.

Preferably, the movable contact rod mechanism comprises a rotating shaft, a movable contact rod, a top plate and a spring; the mounting plate is provided with a rotating shaft in a penetrating way along the width direction of the shell; the rotating shaft is rotatably connected with the mounting plate through a sealing bearing; one end face of the rotating shaft along the axis direction is fixedly provided with a movable contact rod along the diameter direction, and the other end face is fixedly provided with a top plate along the diameter direction;

two ends of the movable contact rod along the length direction are symmetrically arranged by taking the axis of the rotating shaft as a reference; moving contacts are fixedly arranged on the top surface and the bottom surface of the two ends of the moving contact rod along the length direction; a spring is arranged at one end of the top plate far away from the rotating shaft along the length direction and used for resetting the top plate; a top rod is movably arranged below the top plate; the ejector rod is movably connected with the bottom end of the shell.

Preferably, the movable contact rod is provided with a first contact and a second contact above and below one end along the length direction thereof respectively corresponding to the movable contact, and a first pressure sensor and a second pressure sensor above and below the other end thereof respectively corresponding to the movable contact.

Preferably, the mounting plate is fixedly provided with a partition plate on one surface close to the top plate along the width direction of the shell.

Preferably, the bottom surface of the shell is fixedly provided with a mounting end corresponding to the ejector rod; the interior of the mounting end is provided with an elastic element and a return spring for supporting the operation of the ejector rod.

Preferably, the outer wall of one side of the housing in the width direction is provided with a first indicator light and a second indicator light corresponding to the first pressure sensor and the second pressure sensor.

Compared with the prior art, the beneficial effects of this application are:

(1) the movable contact rod mechanism is arranged, the movable contact rod mechanism converts the movement of the ejector rod caused by the pressure change in the system into the movement of the movable contact rod, the movement is amplified, the pressure switch can instantly respond to the pressure change in the system to complete the switching work, meanwhile, the working state of the movable contact rod is monitored in real time by arranging the first pressure sensor and the second pressure sensor, the fault condition of the movable contact rod can be found in time, the reliability is high, and the practicability is high;

(2) this application is through setting up mounting panel and baffle, does sealed processing with the operational environment of moving contact and micro-switch's operational environment, and the leakproofness is good, and the reliability is high, has increased the life of whole device.

It should be understood that what is described in this summary section is not intended to limit key or critical features of the embodiments of the application, nor is it intended to limit the scope of the application. Other features of the present application will become apparent from the following description.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the anatomy of a high reliability pressure switch assembly provided by an embodiment of the present application;

fig. 2 is a schematic view of another angle of the anatomy of a high-reliability pressure switch assembly according to an embodiment of the present application.

The reference numbers in the figures: 1. a housing; 2. a movable contact rod mechanism;

11. mounting a plate; 12. a top rod; 13. a partition plate; 14. an installation end;

21. a rotating shaft; 22. a movable contact rod; 23. a top plate; 24. a spring; 25. a moving contact;

31. a first contact; 32. a second contact;

41. a first pressure sensor; 42. a second pressure sensor; 43. a first indicator light; 44. and a second indicator light.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the portions relevant to the application are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 and 2, an embodiment of the present application provides a high reliability pressure switch assembly, which includes a housing 1, a mounting plate 11 and a movable contact rod mechanism 2;

the shell 1 is hollow and is used for providing a working environment and protection for the whole device; the mounting plate 11 is fixedly arranged in the shell 1 along the length direction of the shell 1; the mounting plate 11 is rotatably provided with a movable contact rod mechanism 2.

In this embodiment, the shell 1 provides operational environment and protection for the whole device, and the inside of shell 1 is provided with mounting panel 11, and mounting panel 11 is divided into two regions with the inside of shell 1, and the leakproofness is good, has reduced and has revealed the fault rate.

The movable contact rod mechanism 2 converts the movement of the ejector rod 12 caused by the pressure change in the system into the movement of the movable contact rod 22 and amplifies the movement, so that the pressure switch can instantly respond to the pressure change in the system to complete the switching work, and meanwhile, the working state of the movable contact rod 22 is monitored in real time by arranging the first pressure sensor 41 and the second pressure sensor 42, the fault condition of the movable contact rod 22 can be found in time, and the movable contact rod mechanism is high in reliability and strong in practicability.

In a preferred embodiment, the moving contact lever mechanism 2 includes a rotating shaft 21, a moving contact lever 22, a top plate 23 and a spring 24; the mounting plate 11 is provided with a rotating shaft 21 along the width direction of the shell 1 in a penetrating way; the rotating shaft 21 is rotatably connected with the mounting plate 11 through a sealing bearing; a movable contact rod 22 is fixedly arranged on one end face of the rotating shaft 21 along the axial direction along the diameter direction, and a top plate 23 is fixedly arranged on the other end face along the diameter direction;

the two ends of the movable contact rod 22 along the length direction are symmetrically arranged by taking the axis of the rotating shaft 21 as a reference; the top surface and the bottom surface of the two ends of the movable contact rod 22 along the length direction are both fixedly provided with a movable contact 25; a spring 24 is arranged at one end of the top plate 23 far away from the rotating shaft 21 along the length direction and is used for resetting the top plate 23; a top rod 12 is movably arranged below the top plate 23; the top rod 12 is movably connected with the bottom end of the shell 1.

Referring to fig. 1 and 2, in this embodiment, the mounting plate 11 divides the internal space of the housing 1 into two regions, a rotating shaft 21 is rotatably disposed on the mounting plate 11, a region where one end of the rotating shaft 21 where the movable contact rod 22 is disposed is an electrical contact chamber, a region where one end of the rotating shaft 21 where the top plate 23 is disposed is a mechanical transmission chamber, the rotating shaft 21 is rotatably and hermetically connected to the mounting plate 11, the mechanical transmission working region is separated from the electrical contact working region, the movable contact rod 22 is located in the sealed space, the sealing performance of the movable contact rod 22 and the movable contact 25 is ensured, the influence of environmental factors is greatly reduced, the problem that the gas or liquid in the system leaks into the pressure switch to affect the operation of the pressure switch is avoided, the reliability is high, and the service life is long.

The push rod 12, i.e. the transmission component of the pressure switch, transmits the pressure change in the system to the push rod 12 through the elastic element at the lower end of the push rod 12, the push rod 12 moves to jack up the top plate 23, the top plate 23 drives the movable contact rod 22 to rotate through the rotating shaft 21, and then the top plate 23 completes the reset through the spring 24.

In a preferred embodiment, one end of the movable contact rod 22 along the length direction is provided with a first contact 31 and a second contact 32 above and below corresponding to the movable contact 25, and the other end is provided with a first pressure sensor 41 and a second pressure sensor 42 above and below corresponding to the movable contact 25.

Referring to fig. 1 and 2, in this embodiment, the first contact 31, the second contact 32, the first pressure sensor 41, and the second pressure sensor 42 are all installed on the inner wall of the housing 1, the rotating shaft 21 drives the movable contact rod 22 to rotate, two ends of the movable contact rod 22 are symmetrically arranged, and can be contacted with two of the first contact 31, the second contact 32, the first pressure sensor 41, and the second pressure sensor 42 through the movable contact 25, and there are two working states: first, one end of the movable contact rod 22 is pressed against the first contact 31 through the movable contact 25, and the other end is pressed against the first pressure sensor 41 through the movable contact 25; second, one end of the movable contact rod 22 is pressed against the second contact 32 through the movable contact 25, and the other end is pressed against the second pressure sensor 42 through the movable contact 25.

The two working states correspond to the opening and closing states of the pressure switch, the sensitivity and the stability are realized, the two working states of the movable contact rod 22 can be monitored and displayed in real time through the first pressure sensor 41 and the second pressure sensor 42, the working of the movable contact rod 22 is monitored, and the reliability is high.

In a preferred embodiment, the mounting plate 11 is fixedly provided with a partition plate 13 on a side close to the top plate 23 in the width direction of the housing 1.

Referring to fig. 1 and 2, in this embodiment, the partition 13 further divides the mechanical transmission chamber in which the end of the rotating shaft 21 where the top plate 23 is disposed is located into a sealed chamber for installing electrical components such as a micro switch, and two contacts of the micro switch are electrically connected to the first contact 31 and the second contact 32, respectively, so that the micro switch is in a relatively stable working environment and has high reliability.

In a preferred embodiment, the bottom surface of the shell 1 is provided with a mounting end 14 corresponding to the fixing of the top rod 12; the mounting end 14 is internally provided with an elastic element and a return spring for supporting the operation of the ejector rod 12.

Referring to fig. 1 and 2, in this embodiment, the pressure change in the system is transmitted to the push rod 12 through the elastic element, the push rod 12 is reset by the reset spring, and the mounting end 14 is used for mounting the pressure switch on the system.

In a preferred embodiment, a first indicator lamp 43 and a second indicator lamp 44 are provided on an outer wall of one side of the housing 1 in the width direction in correspondence to the installation of the first pressure sensor 41 and the second pressure sensor 42.

Referring to fig. 1 and 2, in this embodiment, the first indicator light 43 and the second indicator light 44 are respectively used for displaying the working states of the first pressure sensor 41 and the second pressure sensor 42, and are regulated and controlled by a control chip installed inside the top end of the housing 1, so that the operation is intuitive and clear, and the indication function is good.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood broadly, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-reliability pressure switch assembly is characterized by comprising a shell, a mounting plate and a movable contact rod mechanism;

the shell is hollow and is used for providing a working environment and protection for the whole device; the mounting plate is fixedly arranged in the shell along the length direction of the shell; the movable contact rod mechanism is rotatably arranged on the mounting plate.

2. The high reliability pressure switch assembly of claim 1 wherein the moving contact lever mechanism includes a rotating shaft, a moving contact lever, a top plate and a spring; the mounting plate is provided with the rotating shaft in a penetrating manner along the width direction of the shell; the rotating shaft is rotatably connected with the mounting plate through a sealing bearing; the movable contact rod is fixedly arranged on the end face of one end of the rotating shaft along the axial direction along the diameter direction, and the top plate is fixedly arranged on the end face of the other end of the rotating shaft along the diameter direction;

the two ends of the movable contact rod along the length direction are symmetrically arranged by taking the axis of the rotating shaft as a reference; moving contacts are fixedly arranged on the top surface and the bottom surface of the two ends of the moving contact rod along the length direction; a spring is arranged at one end of the top plate, which is far away from the rotating shaft along the length direction, and is used for resetting the top plate; a top rod is movably arranged below the top plate; the ejector rod is movably connected with the bottom end of the shell.

3. The high-reliability pressure switch assembly according to claim 2, wherein the movable contact rod is provided with a first contact and a second contact corresponding to the movable contact respectively above and below one end in a length direction, and a first pressure sensor and a second pressure sensor corresponding to the movable contact respectively above and below the other end.

4. A highly reliable pressure switch module as claimed in claim 3, wherein said mounting plate is fixedly provided with a partition plate along a side of said housing close to said top plate in a width direction thereof.

5. The high-reliability pressure switch assembly according to claim 4, wherein the bottom surface of the housing is provided with a mounting end corresponding to the fixing of the ejector rod; and the elastic element and the return spring are arranged in the mounting end and used for supporting the ejector rod to work.

6. The high reliability pressure switch assembly of claim 5, wherein a first indicator light and a second indicator light are disposed on an outer wall of one side of the housing in the width direction corresponding to the first pressure sensor and the second pressure sensor.