CN215988580U

CN215988580U - Pressure switch

Info

Publication number: CN215988580U
Application number: CN202122470395.XU
Authority: CN
Inventors: 吴安武
Original assignee: Zhejiang Lefoo Controls Co ltd
Current assignee: Zhejiang Lefoo Controls Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-08
Anticipated expiration: 2031-10-14

Abstract

And (6) a pressure switch. The problem that the existing traditional pressure switch is weak in water hammer resistance is mainly solved. The method is characterized in that: still be equipped with first bellows room (41) and transfer line (42) in the casing, the inner chamber of first bellows room with first pressure chamber intercommunication, be equipped with in the first bellows room and be used for supporting elastic component (411) of first bellows roof portion inner wall, first bellows roof portion outer wall with the transfer line contact and pass through the transfer line drives the control panel activity. The utility model provides a pressure switch, wherein an elastic piece is added in a bellows diaphragm to solve the problem of system misoperation of a pressure hydraulic system due to water hammer action or fluctuation, and the bellows enables pressure action to be dispersed and has good pressure stability.

Description

Pressure switch

Technical Field

The utility model relates to the field of switches, in particular to a pressure switch.

Background

The pressure switch is a device combined with an electric appliance switch, when the pressure reaches the preset fluid pressure, a switch contact acts, the pressure switch is mainly applied to industrial equipment such as a power plant, a petrochemical industry, a metallurgical industry and the like to output an alarm or a control signal, and the pressure switch has important application in the industrial field. Pressure switches are generally classified into mechanical pressure switches and electronic pressure switches.

The traditional pressure switch has the problems of narrow range of applicable media, weak water hammer resistance, insufficient pressure resistance, low pressure precision and easy leakage.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the background art, the utility model provides a pressure switch, which mainly solves the problem that the traditional pressure switch has weak water hammer resistance.

The technical scheme adopted by the utility model is as follows:

pressure switch, including the casing, be equipped with first pressure chamber in the casing and be used for controlling micro-gap switch's control panel, still be equipped with first bellows room and transfer line in the casing, the inner chamber of first bellows room with first pressure chamber intercommunication, the indoor elastic component that is used for supporting of first bellows roof portion inner wall that is equipped with of first bellows, first bellows roof portion outer wall with the transfer line contact and pass through the transfer line drives the control panel activity.

The casing includes the first joint, first bellows chamber is located in the first joint, the circumference outer wall of first bellows chamber one end with first joint inner wall welding.

The elastic piece is a spring, one end of the spring is pressed against the inner wall of the first joint, and the other end of the spring is pressed against the top of the inner wall of the first corrugated pipe chamber.

The control panel is hinged to the inner wall of the shell, a through hole is formed in the control panel, the transmission rod partially penetrates through the through hole, and a transmission head used for driving the control panel to move is arranged on the transmission rod.

The transmission rod is in threaded connection with the transmission head.

The shell is further provided with a second connector, a second corrugated pipe chamber is arranged in the second connector, and the first corrugated pipe chamber and the second corrugated pipe chamber are arranged at two ends of the transmission rod.

The shell is internally provided with a pressing plate, the bottom of the pressing plate is provided with a pressure regulating spring, and one end of the pressure regulating spring is abutted against the control panel.

The first bellows chamber is disposed coaxially with the spring.

The utility model has the beneficial effects that: the utility model provides a pressure switch, wherein an elastic piece is added in a bellows diaphragm to solve the problem of system misoperation of a pressure hydraulic system due to water hammer action or fluctuation, and the bellows enables pressure action to be dispersed and has good pressure stability.

Drawings

FIG. 1 is a schematic, partially broken away view of a first embodiment of the utility model.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the present invention.

Fig. 3 is a partial perspective view of a first embodiment of the present invention.

Fig. 4 is a partially cross-sectional schematic view of a first embodiment of the present invention.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which: as shown in the figure, pressure switch, including casing 1, be equipped with first pressure chamber 2 in the casing and be used for controlling micro-gap switch 9's control panel 3, still be equipped with first bellows room 41 and transfer line 42 in the casing, the inner chamber of first bellows room with first pressure chamber intercommunication, be equipped with in the first bellows room and be used for supporting elastic component 411 of first bellows roof portion inner wall, first bellows roof portion outer wall with the transfer line contact and pass through the transfer line drives the control panel activity. It should be noted that, in the first bellows chamber, the direction of expansion and contraction is the axial direction, the circumferential wall is provided with corrugations, the first pressure cavity is used for medium to flow in, and then the first bellows chamber is propped up, the first bellows chamber drives the control panel to move through the transmission rod, the control panel can be hinged in the housing (the hinge shaft 30 in fig. 3), and after the first bellows chamber moves, the switching of the circuit is realized through the button touching the micro switch, which is not repeated in the prior art. The utility model provides a pressure switch, wherein an elastic piece is added in a bellows diaphragm to solve the problem of system misoperation of a pressure hydraulic system due to water hammer action or fluctuation, and the bellows enables pressure action to be dispersed and has good pressure stability.

In the present invention, as shown in the figure, the housing includes a first joint 11, the first bellows chamber is disposed in the first joint, and a circumferential outer wall of one end of the first bellows chamber is welded to an inner wall of the first joint. One end is fixed by welding, the structure is simpler, and the using effect is better.

In the utility model, as shown in the figure, the elastic member is a spring, one end of the spring is pressed against the inner wall of the first joint, and the other end of the spring is pressed against the top of the inner wall of the first bellows chamber. The elastic piece is a spring, so that the installation is better, and the cost is lower.

In the utility model, as shown in the figure, the control board is hinged on the inner wall of the shell, a through hole 31 is arranged on the control board, the transmission rod partially penetrates through the through hole, and a transmission head 421 for driving the control board to move is arranged on the transmission rod. When the transmission head moves along with the transmission rod, the control plate can be pushed to rotate to control the microswitch.

In the present invention, the driving rod is threadedly coupled to the driving head as shown in the drawings. The transmission head can be provided with a threaded hole for being connected with a transmission rod, so that the transmission head is convenient to detach and replace, and the maintenance cost is reduced.

In the present invention, as shown in the figure, the housing is further provided with a second joint 51, a second bellows chamber 52 is arranged in the second joint, and the first bellows chamber and the second bellows chamber are arranged at two ends of the transmission rod. A second pressure source can be connected into the second connector to realize the function of a differential pressure switch.

In the utility model, as shown in the figure, a pressure plate 6 is arranged in the shell, a pressure regulating spring 61 is arranged at the bottom of the pressure plate, and one end of the pressure regulating spring is pressed against the control plate. The reset function is realized.

In the present invention, as shown in the drawing, the first bellows chamber is disposed coaxially with the spring.

The embodiments described with reference to the drawings are illustrative and are intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. Pressure switch, including casing (1), be equipped with first pressure chamber (2) and control panel (3) that are used for controlling micro-gap switch (9) in the casing, its characterized in that: still be equipped with first bellows room (41) and transfer line (42) in the casing, the inner chamber of first bellows room with first pressure chamber intercommunication, be equipped with in the first bellows room and be used for supporting elastic component (411) of first bellows roof portion inner wall, first bellows roof portion outer wall with the transfer line contact and pass through the transfer line drives the control panel activity.

2. The pressure switch of claim 1, wherein: the shell comprises a first joint (11), the first corrugated pipe chamber is arranged in the first joint, and the circumferential outer wall of one end of the first corrugated pipe chamber is welded with the inner wall of the first joint.

3. The pressure switch of claim 2, wherein: the elastic piece is a spring, one end of the spring is pressed against the inner wall of the first joint, and the other end of the spring is pressed against the top of the inner wall of the first corrugated pipe chamber.

4. The pressure switch of claim 1, wherein: the control panel hinge joint in casing inner wall, be equipped with through-hole (31) on the control panel, the transfer line part passes the through-hole, be equipped with on the transfer line and be used for driving the drive head (421) of control panel activity.

5. The pressure switch of claim 4, wherein: the transmission rod is in threaded connection with the transmission head.

6. The pressure switch of claim 1, wherein: the shell is further provided with a second connector (51), a second corrugated pipe chamber (52) is arranged in the second connector, and the first corrugated pipe chamber and the second corrugated pipe chamber are arranged at two ends of the transmission rod.

7. The pressure switch of claim 1, wherein: the pressure regulating device is characterized in that a pressure plate (6) is arranged in the shell, a pressure regulating spring (61) is arranged at the bottom of the pressure plate, and one end of the pressure regulating spring is abutted against the control panel.

8. A pressure switch according to claim 3, wherein: the first bellows chamber is disposed coaxially with the spring.