CN219370899U - Pressure switch device with stable structure - Google Patents

Abstract

The utility model relates to the technical field of pressure switches and discloses a pressure switch device with a stable structure, which comprises a device shell, wherein a movable plug is movably sleeved on the inner side of an execution pipe, the top of the movable plug is fixedly connected with an execution rod, an output shaft of a driving motor is fixedly connected with a driving gear, the left side of the top of a fixed plate is movably connected with a threaded rod, the bottom of the outer side of the threaded rod is fixedly sleeved with a driven gear, the top thread of the outer side of the threaded rod is sleeved with a threaded pipe, the right side of the threaded pipe is fixedly connected with a first connecting rod, the other end of the first connecting rod is fixedly connected with the outer side of the execution rod, the top of the inner side of the device shell is fixedly connected with an induction device, the bottom of the induction device is fixedly connected with a contact, and the driving device is started, so that the pressure switch can timely feed back the fluid pressure even in a low-temperature environment.

Description

Pressure switch device with stable structure

Technical Field

The utility model relates to the technical field of pressure switches, in particular to a pressure switch device with a stable structure.

Background

The pressure switch is a simple pressure control device, which can issue an alarm or control signal when the measured pressure reaches a rated value. The working principle of the pressure switch is as follows: when the measured pressure exceeds the rated value, the free end of the elastic element generates displacement, and the switch element is pushed directly or after comparison, so that the on-off state of the switch element is changed, and the purpose of controlling the measured pressure is achieved.

The pressure switch is a device combined with an electric switch, and when a predetermined fluid pressure is reached, the switch contact is operated. The alarm device is mainly applied to output alarm or control signals on industrial equipment in power plants, petrochemical industry, metallurgical industry and the like, has important application in the industrial field, can prevent the damage of important devices in production engineering and avoids serious production accidents.

Under the influence of ambient temperature, fluid pressure feedback of high temperature in summer is timely under the effect of expend with heat and contract with cold, but under the condition of low temperature in winter, even flow exceeds the setting value, the pressure that produces leads to the switch unable to report to the police, and feedback is untimely.

Secondly, after the pressure switch is used for a long time, the internal parts are worn, and the fluid is easy to leak, so that the pressure switch cannot be warned after the fluid pressure exceeds a set value, and potential safety hazards exist.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides a pressure switch device with a stable structure, so as to solve the above-mentioned problems in the prior art.

The utility model provides the following technical scheme: the utility model provides a pressure switch device with stable structure, includes the device shell, the inboard bottom of device shell fixedly connected with connecting block all around, the inboard fixedly connected with executive tube of connecting block, the inboard activity of executive tube has cup jointed the activity stopper, the top fixedly connected with executive rod of activity stopper, the inboard fixedly connected with fixed plate of device shell, the left side fixedly connected with motor base at fixed plate top, the top fixedly connected with driving motor of motor, driving motor's output shaft fixedly connected with driving gear, the left side swing joint at fixed plate top has the threaded rod, the bottom fixed cup joint driven gear in the threaded rod outside, the top screw thread in the threaded rod outside has cup jointed the screwed pipe, the right side fixedly connected with connecting rod of screwed pipe, the other end and the outside fixedly connected with of executive rod of a connecting rod, the inboard top fixedly connected with induction device of device shell, the bottom fixedly connected with contact of induction device bottom, the both sides fixedly connected with cylinder pipe of induction device bottom, the bottom fixedly connected with cylinder rod of cylinder pipe, the bottom fixedly connected with cylinder rod in the bottom of cylinder pipe outside, the bottom fixedly connected with driven gear, the bottom fixedly connected with cylinder rod of induction device.

Further, a pressure sensor is fixedly connected to the middle of the bottom plate, and the pressure sensor and the execution rod are located in the same vertical direction.

Further, a reset spring is fixedly connected to the top of the inner side of the cylindrical pipe, and the other end of the reset spring is fixedly connected with the top of the cylindrical rod.

Further, the front and the back of the threaded pipe are fixedly connected with second connecting rods, the other end of the second connecting rod is fixedly connected with an annular frame, the inner side of the annular frame is movably sleeved with a positioning rod, and the bottom of the positioning rod is fixedly connected with the top of the fixing plate.

Further, the driving gear and the driven gear are meshed with each other.

Further, the actuating rod is movably sleeved with the fixed plate.

The utility model has the technical effects and advantages that:

1. according to the utility model, the driving device is arranged, the pressure sensor is arranged, when the fixed plate contacts the pressure sensor, the pressure sensor transmits signals to the driving motor, the driving motor drives the driving gear to rotate, the driven gear is driven to rotate through gear engagement, so that the threaded rod is driven to rotate, the threaded pipe moves upwards under the thrust action of threads, the first connecting rod drives the actuating rod to move upwards, and then the actuating rod pushes the bottom plate to contact with the contact, so that the pressure switch can alarm the fluid pressure in time even in a low-temperature environment.

2. According to the utility model, the positioning rod is arranged, so that when the driven gear drives the threaded rod to rotate, the threaded pipe can only move upwards or downwards without rotating, and the actuating rod is driven to move.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the device housing structure of the present utility model.

Fig. 3 is a schematic structural view of a driving device according to the present utility model.

Fig. 4 is a schematic view of the structure of the positioning rod of the present utility model.

Fig. 5 is a schematic view of the return spring structure of the present utility model.

FIG. 6 is a schematic diagram of an embodiment of the present utility model.

The reference numerals are: 1. a device housing; 101. a connecting block; 102. a fixing plate; 2. an execution pipe; 201. a movable plug; 202. an actuator lever; 3. a feedback line; 4. an induction device; 401. a contact; 402. a cylindrical tube; 421. a return spring; 403. a cylindrical rod; 404. a bottom plate; 405. a pressure sensor; 5. a motor base; 501. a driving motor; 502. a drive gear; 503. a driven gear; 504. a threaded tube; 505. a first connecting rod; 506. a threaded rod; 507. a second connecting rod; 508. an annular frame; 509. and a positioning rod.

Detailed Description

The embodiments of the present utility model will be described more fully hereinafter with reference to the accompanying drawings, in which the embodiments of the present utility model are shown by way of illustration only, and in which a pressure switch device having a stable structure according to the present utility model is not limited to the embodiments of the present utility model, but all other embodiments of the pressure switch device are within the scope of the present utility model, which can be achieved by one of ordinary skill in the art without any inventive effort.

Referring to fig. 1-6, the present utility model provides a pressure switch device with a stable structure, which comprises a device housing 1, a connecting block 101 is fixedly connected around the bottom of the inner side of the device housing 1, an execution pipe 2 is fixedly connected on the inner side of the connecting block 101, a movable plug 201 is movably sleeved on the inner side of the execution pipe 2, an execution rod 202 is fixedly connected on the top of the movable plug 201, a fixed plate 102 is fixedly connected on the inner side of the device housing 1, a motor base 5 is fixedly connected on the left side of the top of the fixed plate 102, a driving motor 501 is fixedly connected on the top of the motor base 5, a driving gear 502 is fixedly connected on the output shaft of the driving motor 501, a threaded rod 506 is movably connected on the left side of the top of the fixed plate 102, a driven gear 503 is fixedly sleeved on the bottom of the outer side of the threaded rod 506, a threaded pipe 504 is fixedly sleeved on the right side of the threaded pipe 504, the other end of the first connecting rod 505 is fixedly connected with the outer side of the actuating rod 202, the top of the inner side of the device shell 1 is fixedly connected with a sensing device 4, the bottom of the sensing device 4 is fixedly connected with a contact 401, both sides of the bottom of the sensing device 4 are fixedly connected with a cylindrical pipe 402, the bottom of the inner side of the cylindrical pipe 402 is movably sleeved with a cylindrical rod 403, the bottom of the cylindrical rod 403 is fixedly connected with a bottom plate 404, the top of the sensing device 4 is fixedly connected with a feedback wire 3, when the pressure of fluid passes through the actuating pipe 2, upward thrust is generated on the movable plug 201, thereby pushing the actuating rod 202 to move upward, then pushing the bottom plate 404 to move upward, after the pressure of fluid exceeds a certain value, larger pressure is generated on the movable plug 201, the bottom plate 404 is enabled to touch the contact 401, the sensing device 4 transmits signals to a control end through the feedback wire 3, when the ambient temperature is lower, fluid is under the effect of expend with heat and contract with cold, even the flow exceeds the setting value, the condition that makes the contact of actuating lever 202 and bottom board 404 can appear in the pressure that produces, lead to pressure switch unable in time to report to the police, through setting up pressure sensor 405, when actuating lever 202 contacted pressure sensor 405, pressure sensor 405 will signal transmission arrives driving motor 501, driving motor 501 drives driving gear 502 and rotates, drive driven gear 503 through the gear engagement and rotate, thereby drive threaded rod 506 and rotate, under the thrust effect of screw thread, screw tube 504 upwards moves, then make first connecting rod 505 drive actuating lever 202 upwards move, then make actuating lever 202 promote bottom board 404 and contact 401 contact, make pressure switch even under the environment of low temperature also can carry out timely feedback to fluid pressure.

In a preferred embodiment, a pressure sensor 405 is fixedly connected to the middle of the bottom plate 404, the pressure sensor 405 is located in the same vertical direction as the actuator rod 202, and when the fixed plate 102 contacts the pressure sensor 405, the pressure sensor 405 transmits a signal to the driving motor 501.

In a preferred embodiment, a return spring 421 is fixedly connected to the top of the inner side of the cylindrical tube 402, and the other end of the return spring 421 is fixedly connected to the top of the cylindrical rod 403, and the return spring 421 generates a downward pushing force on the cylindrical rod 403, so that the bottom plate 404 is kept in a disconnected state with the contact 401, and the pressure switch device is in a normally closed state.

In a preferred embodiment, the front and back sides of the threaded pipe 504 are fixedly connected with the second connecting rod 507, the other end of the second connecting rod 507 is fixedly connected with the annular frame 508, the inner side of the annular frame 508 is movably sleeved with the positioning rod 509, the bottom of the positioning rod 509 is fixedly connected with the top of the fixed plate 102, and the positioning rod 509 plays a limiting role on the threaded pipe 504, so that when the driven gear 503 drives the threaded rod 506 to rotate, the threaded pipe 504 can only move upwards or downwards without rotating, thereby driving the actuating rod 202 to move.

In a preferred embodiment, the driving gear 502 and the driven gear 503 are meshed with each other, when the fixed plate 102 contacts the pressure sensor 405, the pressure sensor 405 transmits a signal to the driving motor 501, the driving motor 501 drives the driving gear 502 to rotate, and drives the driven gear 503 to rotate through gear meshing, so as to drive the threaded rod 506 to rotate, under the thrust action of the threads, the threaded pipe 504 moves upwards, and then the first connecting rod 505 drives the fixed plate 102 to move upwards, and then the fixed plate 102 pushes the bottom plate 404 to contact with the contact 401, so that the pressure switch can timely feed back the fluid pressure even in a low-temperature environment.

In a preferred embodiment, the actuator rod 202 is movably sleeved with the fixed plate 102, and the fluid applies pressure to the movable plug 201, so that the movable plug 201 moves upwards, thereby pushing the actuator rod 202 to move upwards.

The working principle of the utility model is as follows: when the pressure of the fluid passes through the execution pipe 2, an upward thrust is generated on the movable plug 201, thereby pushing the execution rod 202 to move upwards, and then pushing the bottom plate 404 to move upwards, after the fluid pressure exceeds a certain value, a larger pressure is generated on the movable plug 201, so that the bottom plate 404 touches the contact 401, the sensing device 4 transmits a signal to the control end through the feedback line 3, under the action of low ambient temperature, even if the flow exceeds a set value under the action of thermal expansion and contraction, the generated pressure can cause the condition that the execution rod 202 is difficult to contact with the bottom plate 404, so that the pressure switch cannot give an alarm timely, through the arrangement of the pressure sensor 405, when the fixed plate 102 contacts the pressure sensor 405, the pressure sensor 405 transmits a signal to the driving motor 501, the driving motor 501 drives the driving gear 502 to rotate, and drives the driven gear 503 to rotate through gear engagement, so as to drive the threaded rod 506 to rotate, under the thrust action of the threads, the first connecting rod 505 drives the execution rod 202 to move upwards, and then the execution rod 202 pushes the bottom plate 404 to contact with the contact 401, so that the pressure switch 202 can feed back the pressure of the fluid even under the low-temperature environment timely.

Claims (6)

1. Pressure switch device with stable structure, comprising a device housing (1), characterized in that: the utility model discloses a device, including device shell (1), connecting block (101) is fixed connection all around in the inboard bottom of device shell (1), the inboard fixedly connected with executive tube (2) of connecting block (101), movable plug (201) has been cup jointed to the inboard activity of executive tube (2), the top fixedly connected with executive rod (202) of movable plug (201), the inboard fixedly connected with fixed plate (102) of device shell (1), the left side fixedly connected with motor base (5) at fixed plate (102) top, the top fixedly connected with driving motor (501) of motor base (5), the output shaft fixedly connected with driving gear (502) of driving motor (501), the left side swing joint at fixed plate (102) top has threaded rod (506), driven gear (503) has been cup jointed to the bottom of threaded rod (506) outside, threaded pipe (504) has been cup jointed at the top screw thread in the outside, connecting rod (505) is fixedly connected with first connecting rod (505) on the right side, the other end and the outside fixedly connected with executive rod (202) of connecting rod (505) outside, the device (4) of inside shell (1) are fixed connection, induction device (4) are fixed connection bottom (401), the two sides of induction system (4) bottom fixedly connected with cylinder pipe (402), cylinder pole (403) have been cup jointed in the inboard bottom activity of cylinder pipe (402), the bottom fixedly connected with bottom board (404) of cylinder pole (403), the top fixedly connected with feedback line (3) of induction system (4).

2. A pressure switching device having a stable structure according to claim 1, wherein: the middle of the bottom plate (404) is fixedly connected with a pressure sensor (405), and the pressure sensor (405) and the execution rod (202) are positioned in the same vertical direction.

3. A pressure switching device having a stable structure according to claim 1, wherein: the top of cylinder pipe (402) inboard is fixedly connected with reset spring (421), the other end of reset spring (421) is fixedly connected with the top of cylinder pole (403).

4. A pressure switching device having a stable structure according to claim 1, wherein: the front and the back of screwed pipe (504) are all fixedly connected with No. two connecting rods (507), the other end fixedly connected with annular frame (508) of No. two connecting rods (507), locating lever (509) has been cup jointed in the inboard activity of annular frame (508), the bottom of locating lever (509) and the top fixed connection of fixed plate (102).

5. A pressure switching device having a stable structure according to claim 1, wherein: the driving gear (502) and the driven gear (503) are meshed with each other.

6. A pressure switching device having a stable structure according to claim 1, wherein: the actuating rod (202) is movably sleeved with the fixed plate (102).