CN219642737U

CN219642737U - Pressure switch assembly

Info

Publication number: CN219642737U
Application number: CN202320889171.9U
Authority: CN
Inventors: 诸德彪; 蒋华国; 吕正平
Original assignee: Chongqing Xingfuan Electronics Co ltd
Current assignee: Chongqing Xingfuan Electronics Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-09-05
Anticipated expiration: 2033-04-20

Abstract

The utility model provides a pressure switch assembly, and relates to the field of pressure switches. Including the switch casing, the right side fixedly connected with protective housing of switch casing bottom surface, the downside fixedly connected with pressure sensor of protective housing inner wall, pressure sensor's inner wall sliding connection has the piston rod, the upside fixedly connected with seal shell of protective housing inner wall, the upper end of piston rod runs through the upside of pressure sensor inner wall and the bottom surface of seal shell to the inside of switch casing, the downside fixedly connected with piston block of piston rod wall. According to the utility model, the hemispherical plug block and the piston block are arranged on the piston rod arranged on the pressure sensor, so that the hemispherical plug block always clings to the inner wall of the sealing shell to slide when the piston rod moves, and the hemispherical plug block blocks the outlet part at the upper end of the sealing shell when the piston rod moves to the limit, thereby preventing liquid or gas from entering the switch shell and improving the tightness of the device.

Description

Pressure switch assembly

Technical Field

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

Background

The pressure switch adopts a high-precision and high-stability pressure sensor and a transmitting circuit, and realizes the detection, display, alarm and control signal output of medium pressure signals by a special CPU modularized signal processing technology, and the pressure switch can be widely used for measuring and controlling the gauge pressure and absolute pressure of various gases and liquids in the fields of petroleum, chemical industry, metallurgy, electric power, water supply and the like, and is an ideal intelligent measurement and control instrument in an industrial field.

The working principle of the pressure switch is as follows: when the pressure in the system is higher or lower than rated safety pressure, the disc in the sensor moves instantaneously, the switch connector is pushed to be connected or disconnected through the connecting guide rod, when the pressure is reduced or increased to a rated recovery value, the disc resets instantaneously, the switch resets automatically, or simply, when the measured pressure exceeds the rated value, the free end of the elastic element displaces, and the switch element is pushed directly or after comparison, so that the on-off state of the switch element is changed, and the aim of controlling the measured pressure is fulfilled. The elastic element adopted by the pressure switch is a single-ring spring tube, a diaphragm capsule and a ripple.

When the existing pressure switch is used, the internal sealing effect is poor, when the pressure of liquid or gas is overlarge or leakage occurs, the liquid or gas is easy to enter the pressure switch through a gap at the contact part of the sensor, so that the operation of internal parts of the pressure switch is affected, and the circuit is seriously easy to fail.

Disclosure of Invention

The utility model aims to provide a pressure switch assembly, which solves the problems that the prior pressure switch has poor internal sealing effect when in use and is easy to cause liquid or gas to enter the pressure switch through a gap at a contact part of a sensor when the pressure of the liquid or the gas is overlarge or leakage occurs, thereby influencing the operation of internal parts of the pressure switch and seriously easily causing faults of a circuit.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pressure switch assembly, includes the switch casing, the right side fixedly connected with protective housing of switch casing bottom surface, the downside fixedly connected with pressure sensor of protective housing inner wall, pressure sensor's inner wall sliding connection has the piston rod, the upside fixedly connected with seal shell of protective housing inner wall, the upside of piston rod runs through the upside of pressure sensor inner wall and the bottom surface of seal shell to the inside of switch casing, the downside fixedly connected with piston block of piston rod wall, the inner wall sliding connection of piston block and seal shell all around, the top surface fixedly connected with hemisphere chock, the downside all around of hemisphere chock and the common fixedly connected with rubber pad of top surface of piston block, the export has been seted up to the top surface of seal shell, the downside fixedly connected with blotter of seal shell inner wall.

Preferably, the protection shell inner wall is located pressure sensor's downside fixedly connected with dustproof otter board, the upside and the switch casing's of protection shell periphery bottom surface fixedly connected with sealing washer jointly.

Preferably, a bracket is fixedly connected to the left side of the lower side of the inner wall of the switch shell, and levers are connected to the front side and the rear side of the inner wall of the bracket in a rotating manner through rotating shafts.

Preferably, the left side of switch shells inner wall fixedly connected with micro-gap switch, the center department fixedly connected with node terminal of switch shells inner wall rear side.

Preferably, two spring seats are arranged on the right side of the inside of the switch shell, the centers of the bottom surfaces of the two spring seats are fixedly connected with upper contact ends, bottom blocks are arranged below the two spring seats, and the top surfaces of the two bottom blocks are fixedly connected with lower contact ends.

Preferably, two the equal fixedly connected with slide bar of left and right sides of bottom block top surface, a plurality of the pole wall of slide bar has all cup jointed reset spring, two reset spring's upper and lower both ends respectively with the left and right sides of bottom block top surface and the left and right sides fixed connection of spring holder bottom surface, a plurality of the upper end of slide bar all runs through the bottom surface of spring holder to its top surface, a plurality of the equal fixedly connected with stopper of upper end of slide bar.

Preferably, the top surfaces of the two spring seats are respectively connected with an adjusting bolt through bearings in a rotating mode, two threaded openings are formed in the right side of the top surface of the switch shell, and the rod walls of the two adjusting bolts are respectively connected with the inner walls of the threaded openings in a threaded mode.

Preferably, two sliding grooves are formed in the right side of the rear face of the switch shell, and the inner walls of the two sliding grooves are connected with the rear face of the spring seat in a sliding mode through sliding blocks.

The utility model has the technical effects and advantages that:

1. according to the utility model, the hemispherical plug block and the piston block are arranged on the piston rod arranged on the pressure sensor, so that the hemispherical plug block always clings to the inner wall of the sealing shell to slide when the piston rod moves, and the hemispherical plug block blocks the outlet part at the upper end of the sealing shell when the piston rod moves to the limit, thereby preventing liquid or gas from entering the switch shell and improving the tightness of the device.

2. Through setting up switch casing, support, lever, under the effect of lever, can warp through the promotion control lever of piston rod to the both ends length is different about the lever, thereby when the piston rod resets, the right-hand member of lever can reset.

3. Through setting up slide bar, bottom block, reset spring, spring holder, stopper, under reset spring's effect for the lever is after reset, can drive down the contact end and keep away from the upper contact end, thereby the device is in time opened, conveniently carries out automatic control to the switch of circuit, and under the effect of slide bar, is spacing for the removal of bottom block.

Drawings

Fig. 1 is a schematic perspective view of the whole structure of the present utility model.

Fig. 2 is a schematic diagram of the overall front cross-sectional structure of the present utility model.

Fig. 3 is an enlarged schematic view of the portion a of fig. 2 according to the present utility model.

Fig. 4 is a schematic perspective view of a pressure sensor according to the present utility model.

In the figure: 1. a switch housing; 2. a protective shell; 3. a pressure sensor; 4. a piston rod; 5. a sealed housing; 6. a piston block; 7. hemispherical plugs; 8. a rubber pad; 9. an outlet; 10. a cushion pad; 11. a dust-proof screen; 12. a bracket; 13. a lever; 14. a micro-switch; 15. a node terminal; 16. a seal ring; 17. a spring seat; 18. an upper contact end; 19. a bottom block; 20. a lower contact end; 21. a slide rod; 22. a return spring; 23. a limiting block; 24. and (5) adjusting a bolt.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a pressure switch assembly as shown in figures 1-4, which comprises a switch shell 1, wherein the right side of the bottom surface of the switch shell 1 is fixedly connected with a protective shell 2, the lower side of the inner wall of the protective shell 2 is fixedly connected with a pressure sensor 3, the inner wall of the pressure sensor 3 is slidably connected with a piston rod 4, the upper side of the inner wall of the protective shell 2 is fixedly connected with a sealing shell 5, the upper end of the piston rod 4 penetrates through the upper side of the inner wall of the pressure sensor 3 and the bottom surface of the sealing shell 5 to the inside of the switch shell 1, the lower side of the rod wall of the piston rod 4 is fixedly connected with a piston block 6, the periphery of the piston block 6 is slidably connected with the inner wall of the sealing shell 5, the top surface of the piston block 6 is fixedly connected with a rubber pad 8, the top surface of the sealing shell 5 is provided with an outlet 9, and the lower side of the inner wall of the sealing shell 5 is fixedly connected with a buffer pad 10.

As shown in fig. 2, the inner wall of the protective housing 2 is fixedly connected with a dustproof screen plate 11 at the lower side of the pressure sensor 3, the upper side of the periphery of the protective housing 2 and the bottom surface of the switch housing 1 are fixedly connected with a sealing ring 16 together, impurities are prevented from entering the protective housing 2 under the action of the dustproof screen plate 11, the detection of the pressure sensor 3 is affected, the tightness of the installation between the protective housing 2 and equipment is increased under the action of the sealing ring 16, a support 12 is fixedly connected at the left side of the lower side of the inner wall of the switch housing 1, levers 13 are connected at the front side and the rear side of the inner wall of the support 12 in a rotating way through a rotating shaft together, under the action of the levers 13, the levers 13 can be tilted through pushing of the piston rods 4, and the lengths of the left end and the right end of the levers 13 are different, so that the right end of the levers 13 can be reset when the piston rods 4 are reset.

As shown in fig. 2, the left side fixedly connected with micro-gap switch 14 of switch casing 1 inner wall, the center department fixedly connected with node terminal 15 of switch casing 1 inner wall rear side, under micro-gap switch 14's effect, make the device realize automatic control and safety protection in the equipment that needs frequent switching circuit, under node terminal 15's effect, the convenience is connected with external equipment, the inside right side of switch casing 1 is provided with two spring holders 17, the center department of two spring holder 17 bottom surfaces all fixedly connected with upper contact end 18, the below of two spring holders 17 all is provided with bottom block 19, the top surface of two bottom blocks 19 all fixedly connected with lower contact end 20, the pipe wall of device can be controlled to the upper contact end 18 after contacting with lower contact end 20, thereby conveniently carry out timely control.

As shown in fig. 2, the left and right sides of the top surfaces of the two bottom blocks 19 are fixedly connected with sliding rods 21, the rod walls of the sliding rods 21 are sleeved with return springs 22, the upper and lower ends of the two return springs 22 are respectively fixedly connected with the left and right sides of the top surfaces of the bottom blocks 19 and the left and right sides of the bottom surfaces of the spring seats 17, the upper ends of the sliding rods 21 penetrate through the bottom surfaces of the spring seats 17 to the top surfaces of the spring seats, the upper ends of the sliding rods 21 are fixedly connected with limiting blocks 23, under the action of the return springs 22, the lever 13 can drive the lower contact ends 20 to be far away from the upper contact ends 18 after being reset, so that the device is opened timely, automatic control is convenient for switching of a circuit, and the movement of the bottom blocks 19 is limited under the action of the sliding rods 21.

As shown in fig. 1-2, the top surfaces of the two spring seats 17 are respectively connected with an adjusting bolt 24 through bearings in a rotating way, two threaded openings are formed in the right side of the top surface of the switch shell 1, the rod walls of the two adjusting bolts 24 are respectively connected with the inner walls of the threaded openings in a threaded way, the use height of the spring seats 17 is conveniently adjusted under the action of the adjusting bolts 24, two sliding grooves are formed in the right side of the rear surface of the switch shell 1, the inner walls of the two sliding grooves are respectively connected with the rear surface of the spring seats 17 in a sliding way through sliding blocks, and the stability of the spring seats 17 in moving is kept under the action of the sliding grooves.

The working principle of the utility model is as follows: when the device is used, the device is arranged at a using position, the protective shell 2 is connected with a detected gas or liquid device and can be contacted with the detected gas or liquid device, the sealing performance of the mounting position is increased under the action of the sealing ring 16, an external power supply is connected to the device, when the pressure of liquid or gas is high, the pressure sensor 3 drives the piston rod 4 to move upwards after detecting the pressure, so that the piston rod 4 pushes the lever 13 in the switch shell 1, the right end of the lever 13 lifts up to right and left two bottom blocks 19, the lower contact ends 20 on the two bottom blocks 19 are contacted with the upper contact ends 18 below the spring seat 17, and the wall of the switch tube is controlled;

when the piston rod 4 moves, the piston block 6 on the piston rod 4 slides in the sealing shell 5, when the piston rod 4 moves to the limit, the hemispherical plug 7 on the piston rod 4 plugs the outlet 9, and the rubber pad 8 is tightly attached to the upper and lower sides of the inner wall of the sealing shell 5, so that liquid or gas is prevented from leaking into the switch shell 1 through the sealing shell 5, and impurities are prevented from entering the protective shell 2 under the action of the dustproof screen 11;

meanwhile, when the height of the spring seat 17 needs to be adjusted, the microswitch 14 is rotated, so that the microswitch 14 drives the spring seat 17 to move to the upper limit, the bottom block 19 is driven to reset under the action of the reset spring 22, the bottom block 19 is kept stable in movement under the action of the slide rod 21, meanwhile, the bottom block 19 is limited in movement under the action of the limiting block 23, equipment needing to be connected is connected through the node terminal 15, and under the action of the microswitch 14, automatic control and safety protection are realized for the device when the left end of the lever 13 is tilted.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A pressure switch assembly comprising a switch housing (1), characterized in that: the utility model discloses a switch casing, including switch casing (1), switch casing, piston rod (5), sealing shell (5), piston rod (4) the right side fixedly connected with protective housing (2) of bottom surface, the downside fixedly connected with piston block (6) of the downside fixedly connected with of piston block (6) inner wall with sealing shell (5), the top surface of hemisphere chock (7) downside and piston block (6) fixedly connected with rubber pad (8) jointly, export (9) have been seted up to the top surface of sealing shell (5), the downside fixedly connected with cushion (10) of sealing shell (5) inner wall.

2. A pressure switch assembly as claimed in claim 1, wherein: the inner wall of the protective shell (2) is fixedly connected with a dustproof screen plate (11) at the lower side of the pressure sensor (3), and a sealing ring (16) is fixedly connected with the upper side of the periphery of the protective shell (2) and the bottom surface of the switch shell (1) together.

3. A pressure switch assembly as claimed in claim 1, wherein: the left side of switch casing (1) inner wall downside fixedly connected with support (12), the front and back both sides of support (12) inner wall are connected with lever (13) through the pivot rotation jointly.

4. A pressure switch assembly as claimed in claim 1, wherein: the left side of switch casing (1) inner wall fixedly connected with micro-gap switch (14), the center department fixedly connected with node terminal (15) of switch casing (1) inner wall rear side.

5. A pressure switch assembly as claimed in claim 1, wherein: two spring seats (17) are arranged on the right side inside the switch shell (1), upper contact ends (18) are fixedly connected to the centers of the bottom surfaces of the two spring seats (17), bottom blocks (19) are arranged below the two spring seats (17), and lower contact ends (20) are fixedly connected to the top surfaces of the two bottom blocks (19).

6. A pressure switch assembly as defined in claim 5, wherein: two the left and right sides of bottom block (19) top surface is all fixedly connected with slide bar (21), and a plurality of return spring (22) have all been cup jointed to the pole wall of slide bar (21), two the upper and lower both ends of return spring (22) respectively with the left and right sides of bottom block (19) top surface and the left and right sides of spring holder (17) bottom surface fixed connection, a plurality of the upper end of slide bar (21) all runs through the bottom surface of spring holder (17) to its top surface, a plurality of the upper end of slide bar (21) is all fixedly connected with stopper (23).

7. A pressure switch assembly as defined in claim 5, wherein: the top surfaces of the two spring seats (17) are respectively connected with an adjusting bolt (24) through bearings in a rotating mode, two threaded openings are formed in the right side of the top surface of the switch shell (1), and rod walls of the two adjusting bolts (24) are respectively connected with inner walls of the threaded openings in a threaded mode.

8. A pressure switch assembly as defined in claim 5, wherein: two sliding grooves are formed in the right side of the rear face of the switch shell (1), and the inner walls of the two sliding grooves are connected with the rear face of the spring seat (17) in a sliding mode through sliding blocks.