CN217035522U

CN217035522U - Liquid level switch

Info

Publication number: CN217035522U
Application number: CN202220133650.3U
Authority: CN
Inventors: 陈卫
Original assignee: Shanghai Lingyuan Equipment & Engineering Co ltd
Current assignee: Shanghai Lingyuan Equipment & Engineering Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-22
Anticipated expiration: 2032-01-19

Abstract

The utility model belongs to the technical field of liquid level control equipment, a liquid level switch is disclosed, including control main part, operation main part and shell frame, the lower extreme fixed mounting of control main part and operation main part is on the upper portion of shell frame, the control main part includes runner, coil spring, first screw base, threaded rod, belt and floating block, the fixed middle part outer end that cup joints at the threaded rod of runner, coil spring's outer end fixed connection is at the outer wall of runner, coil spring's inner fixed connection is at the upper portion lateral wall of first screw base, the lower extreme fixed connection of first screw base is at the upper portion inner wall of shell frame, the upper end fixed connection of belt is in the runner outer end, the upper end fixed connection of floating block is at the lower extreme of belt, the inner wall at first screw base is installed to the threaded rod screw thread, the threaded rod runs through first screw base. This application has reduced waterproof degree of difficulty relatively, satisfies the operation needs better.

Description

Liquid level switch

Technical Field

The application belongs to the technical field of liquid level control equipment, especially, relate to a liquid level switch.

Background

Level switch also calls level switch, level sensor, as the name implies, is exactly the switch of coming the control scheme break-make through the liquid level, to the deep water level of control, adopts inductor under water to respond to usually and triggers.

Due to the fact that an underwater electric induction mode is adopted, requirements for external waterproof materials and working are high, production difficulty is increased due to the fact that the requirements for working and materials are high, and therefore the problem that a conventional deep liquid level switch is high in waterproof difficulty coefficient is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid level switch that the purpose of this application is in order to solve prior art, the problem of the waterproof degree of difficulty coefficient ratio height of conventional depths liquid level switch, and provides.

In order to achieve the purpose, the following technical scheme is adopted in the application: the utility model provides a liquid level switch, includes control main part, operation main part and shell frame, the lower extreme fixed mounting of control main part and operation main part is on the upper portion of shell frame, the control main part includes runner, coil spring, first screw thread seat, threaded rod, belt and floating block, the fixed middle part outer end that cup joints at the threaded rod of runner, coil spring's outer end fixed connection is at the outer wall of runner, coil spring's inner fixed connection is at the upper portion lateral wall of first screw thread seat, the lower extreme fixed connection of first screw thread seat is at the upper portion inner wall of shell frame, the upper end fixed connection of belt is in the runner outer end, the upper end fixed connection of floating block is at the lower extreme of belt, the inner wall at first screw thread seat is installed to the threaded rod screw thread, the threaded rod runs through first screw thread seat, and one side outer wall unthreaded of threaded rod first screw thread seat dorsad.

Utilize the buoyancy of water to lift the floating block and reduce the pulling force of belt to the runner, drive the runner gyration with the help of coil spring's effort simultaneously, made things convenient for the threaded rod to stretch out to outer spiral along first screw thread seat, made things convenient for the response liquid level, adopt the outer mode of triggering of water, reduced the waterproof degree of difficulty.

Preferably, the side end of the rotating wheel is fixedly connected with baffle rings, and the baffle rings are symmetrically arranged on the side part of the rotating wheel.

Utilize the fender ring to tie the belt at the outer wall of runner, improved the stability of runner rolling belt.

Preferably, the front end of the threaded rod is fixedly connected with a baffle.

The blocking piece is blocked at the front side of the first thread seat, so that the possibility that the threaded rod is separated from the first thread seat is reduced.

Preferably, the rear portion of threaded rod slidable mounting has the guide holder, the lower extreme fixed connection of guide holder is at the upper portion inner wall of shell frame.

Through the mode at guide bracket support threaded rod rear portion, improved the stability at threaded rod rear portion.

Preferably, the operation main part includes micro-gap switch, screw rod and second screw thread seat, micro-gap switch's front end is rotated and is installed the rear end at the screw rod, the upper portion inner wall at second screw thread seat is installed to the screw rod screw thread, the screw rod runs through second screw thread seat, the lower part side fixed connection of second screw thread seat is at the outer wall of shell frame.

The position of the microswitch is adjusted by screwing the screw rod, so that a user can conveniently control the trigger distance between the microswitch and the control main body, and the user can conveniently adjust the liquid level trigger point.

Preferably, the front end of the screw rod is fixedly connected with a knob.

The knob is convenient for the manual operation of screw rod rotation.

Preferably, the lower end of the microswitch is fixedly connected with a weight.

The gravity is provided for the lower part of the microswitch by the heavy block, so that the probability that the screw drives the microswitch to rotate is reduced.

Preferably, the shell frame includes apron, protective housing and mount pad, apron and protective housing cover are in the outside of control subject, the lower extreme fixed connection of first screw thread seat and guide seat is in the upper end of protective housing, the lower part side fixed connection of second screw thread seat is at the upper portion outer wall of protective housing, the lower extreme fixed connection of apron is in the upper end of protective housing, the front end fixed connection of mount pad is in the upper portion rear end of protective housing.

The control main body is wrapped by the shell frame, and the effect of stably controlling the working direction of the main body is achieved.

To sum up, the technical effect and the advantage of this application:

1. utilize the buoyancy of water to lift the floating block and reduce the pulling force of belt to the runner, drive the runner gyration with the help of coil spring's effort simultaneously, made things convenient for the threaded rod to stretch out to the external screw along first screw thread seat to made things convenient for the response liquid level, adopted the outer mode of triggering of water, reduced the waterproof degree of difficulty.

2. The position of the microswitch is adjusted by screwing the screw rod, so that a user can conveniently control the trigger distance between the microswitch and the control main body, and the user can conveniently adjust the liquid level trigger point.

Drawings

Fig. 1 is a schematic view of the overall structure proposed in the present application;

fig. 2 is a schematic structural diagram of a control main body proposed in the present application;

FIG. 3 is a schematic diagram of the operation body structure proposed in the present application;

fig. 4 is a schematic diagram of a housing structure proposed in the present application.

In the figure: 1. a baffle ring; 2. a control body; 3. an operating body; 4. a housing; 5. a rotating wheel; 6. a coil spring; 7. a baffle plate; 8. a first threaded seat; 9. a guide seat; 10. a threaded rod; 11. a belt; 12. floating blocks; 13. a microswitch; 14. a screw; 15. a knob; 16. a second screw seat; 17. a weight block; 18. a cover plate; 19. a protective shell; 20. and (7) mounting a seat.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Referring to fig. 1 and 2, a liquid level switch comprises a control body 2, an operation body 3 and a housing 4, wherein the lower ends of the control body 2 and the operation body 3 are fixedly installed on the upper portion of the housing 4, the control body 2 is located inside the housing 4, the control body 2 comprises a rotating wheel 5, a spiral spring 6, a first thread seat 8, a threaded rod 10, a belt 11 and a floating block 12, the rotating wheel 5 is fixedly sleeved on the outer end of the middle portion of the threaded rod 10, the outer end of the spiral spring 6 is fixedly connected on the outer wall of the rotating wheel 5, the inner end of the spiral spring 6 is fixedly connected on the upper side wall of the first thread seat 8, the spiral spring 6 is used for providing a rotating acting force for the rotating wheel 5, the lower end of the first thread seat 8 is fixedly connected on the inner wall of the upper portion of the housing 4, the upper end of the belt 11 is fixedly connected on the outer end of the rotating wheel 5, the upper end of the floating block 12 is fixedly connected on the lower end of the belt 11, the threaded rod 10 is threadedly installed on the inner wall of the first thread seat 8, the threaded rod 10 penetrates through the first threaded seat 8, and the outer wall of the threaded rod 10 on the side opposite to the first threaded seat 8 is not threaded.

Referring to fig. 2, the side ends of the rotating wheel 5 are fixedly connected with baffle rings 1, a pair of baffle rings 1 are arranged, and the baffle rings 1 are symmetrically arranged on the side parts of the rotating wheel 5.

The front end of the threaded rod 10 is fixedly connected with a baffle 7, and the baffle 7 is disc-shaped.

The rear part of the threaded rod 10 is provided with a guide seat 9 in a sliding way, the lower end of the guide seat 9 is fixedly connected to the inner wall of the upper part of the shell frame 4, and the guide seat 9 is used for supporting the rear part of the threaded rod 10.

Referring to fig. 3, the operation body 3 includes a micro switch 13, a screw rod 14 and a second screw seat 16, the front end of the micro switch 13 is rotatably installed at the rear end of the screw rod 14, the micro switch 13 and the screw rod 14 are rotatably connected, the micro switch 13 is conveniently connected with electricity, the screw rod 14 is rotatably installed on the inner wall of the upper portion of the second screw seat 16, the screw rod 14 penetrates through the second screw seat 16, the second screw seat 16 is L-shaped, the lower side end of the second screw seat 16 is fixedly connected to the outer wall of the shell frame 4, and the operation body 3 is fixedly connected with the shell frame 4 through the second screw seat 16.

The front end of the screw 14 is fixedly connected with a knob 15, and the outer wall of the knob 15 is provided with anti-skid grains.

The lower end of the microswitch 13 is fixedly connected with a weight 17, and the weight 17 is used for providing gravity for the lower part of the microswitch 13.

Referring to fig. 4, the housing 4 includes a cover plate 18, a protective housing 19, and an installation seat 20, the cover plate 18 and the protective housing 19 cover the outside of the control body 2, the control body 2 is protected by the cover plate 18 and the protective housing 19, the lower ends of the first screw base 8 and the guide base 9 are fixedly connected to the upper end of the protective housing 19, the first screw base 8 and the guide base 9 are fixed by the protective housing 19, the lower side end of the second screw base 16 is fixedly connected to the upper outer wall of the protective housing 19, the second screw base 16 is fixed by the protective housing 19, the lower end of the cover plate 18 is fixedly connected to the upper end of the protective housing 19, and the front end of the installation seat 20 is fixedly connected to the upper rear end of the protective housing 19.

The working principle is as follows: during the use, adjust the distance of micro-gap switch 13 and threaded rod 10 front side through revolving screw 14 soon, after the liquid level risees, utilize the buoyancy of water to drive floating block 12 rebound for coil spring 6's elasticity drives runner 5 rolling belt 11, utilize floating block 12 self gravity to overcome coil spring 6's elasticity and keep flagging under the condition that does not have buoyancy, runner 5 rotates the in-process and drives threaded rod 10 and move forward along the spiral of first screw seat 8, until threaded rod 10 and micro-gap switch 13 extrusion trigger micro-gap switch 13, through micro-gap switch 13 control target power.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present application in the scope of the present application.

Claims

1. A level switch, characterized by: including control main part (2), operation main part (3) and shell frame (4), the lower extreme fixed mounting of control main part (2) and operation main part (3) is on the upper portion of shell frame (4), control main part (2) includes runner (5), coil spring (6), first screw thread seat (8), threaded rod (10), belt (11) and floating block (12), runner (5) fixed cup joint is in the middle part outer end of threaded rod (10), the outer end fixed connection of coil spring (6) is in the outer wall of runner (5), the inner fixed connection of coil spring (6) is at the upper portion lateral wall of first screw thread seat (8), the lower extreme fixed connection of first screw thread seat (8) is at the upper portion inner wall of shell frame (4), the upper end fixed connection of belt (11) is in runner (5) outer end, the upper end fixed connection of floating block (12) is at the lower extreme of belt (11), threaded rod (10) threaded mounting is in the inner wall of first screw thread seat (8), threaded rod (10) run through first screw thread seat (8), and threaded rod (10) one side outer wall of first screw thread seat (8) dorsad is unthreaded.

2. A level switch as claimed in claim 1, wherein: the side end of the rotating wheel (5) is fixedly connected with a baffle ring (1), and the baffle ring (1) is symmetrically arranged on the side part of the rotating wheel (5).

3. A level switch as claimed in claim 1, wherein: the front end of the threaded rod (10) is fixedly connected with a baffle plate (7).

4. A level switch as claimed in claim 1, wherein: the rear portion of threaded rod (10) slidable mounting has guide holder (9), the lower extreme fixed connection of guide holder (9) is at the upper portion inner wall of shell frame (4).

5. A level switch according to claim 4, wherein: the operation main body (3) comprises a microswitch (13), a screw rod (14) and a second thread seat (16), the front end of the microswitch (13) is rotatably installed at the rear end of the screw rod (14), the screw rod (14) is installed on the inner wall of the upper portion of the second thread seat (16) in a threaded mode, the screw rod (14) penetrates through the second thread seat (16), and the side end of the lower portion of the second thread seat (16) is fixedly connected to the outer wall of the shell frame (4).

6. A level switch according to claim 5, wherein: the front end of the screw rod (14) is fixedly connected with a knob (15).

7. A level switch according to claim 5, wherein: the lower end of the microswitch (13) is fixedly connected with a heavy block (17).

8. A level switch according to claim 5, wherein: the utility model discloses a safety protection device for automobile engine, including casing frame (4) including apron (18), protective housing (19) and mount pad (20), apron (18) and protective housing (19) cover in the outside of control main part (2), the lower extreme fixed connection of first screw thread seat (8) and guide seat (9) is in the upper end of protective housing (19), the lower part side fixed connection of second screw thread seat (16) is at the upper portion outer wall of protective housing (19), the lower extreme fixed connection of apron (18) is in the upper end of protective housing (19), the front end fixed connection of mount pad (20) is in the upper portion rear end of protective housing (19).