CN219738842U - Liquid level switch - Google Patents

Abstract

The utility model discloses a liquid level switch, wherein a base is fixedly arranged at the bottom of a sleeve, a liquid level switch main body is fixedly arranged at the inner side of the base, a detection probe penetrates through the base at the bottom of the liquid level switch main body, and a mounting mechanism is arranged at the front of the base; the screw rod is driven to rotate through the driving motor, the screw rod drives the sliding plate to slide on the inner side of the guide rail, the cleaning leather sheath, the first fixing block and the second fixing block are driven to slide through the sliding plate, at the moment, the cleaning leather sheath and the cleaning scraping cylinder can be driven to scrape the exposed parts of the detection probe, the outer protection pipe and the outer surface of the inner protection pipe, so that the whole cleaning of the device is convenient, the whole cleaning effect of the device is good, the follow-up cleaning of the device is facilitated, dust and impurities attached to the outer surface of the detection probe can be avoided, and the sensitivity of the detection probe can be kept for a long time.

Description

Liquid level switch

Technical Field

The utility model relates to the technical field of liquid level switches, in particular to a liquid level switch.

Background

The liquid level switch, also called a water level switch and a liquid level sensor, is used for controlling the liquid level, is mainly divided into a contact type liquid level switch and a non-contact type liquid level switch from the form, the common non-contact type switch is provided with a capacitance type liquid level switch, the contact type floating ball type liquid level switch is most widely applied, the electrode type liquid level switch, the electronic type liquid level switch and the capacitance type liquid level switch can also be realized by adopting a contact type method, the electronic type liquid level switch detects the water level through a built-in electronic probe, and then a chip processes the detected signal; in the existing liquid level switch sensor device, a liquid switch moves up and down by using a floating ball and pushes a switch to move up and down, the switch is contacted with a sensor, driving equipment is started after the sensor is contacted, a connecting rod is arranged between the floating ball and the switch, the connecting rod drives the floating ball and the switch to limit moving tracks, the floating ball and the switch are convenient to move on a limit column, a chute is required to be formed in the outside of the limit column, the limit column carries the switch to be soaked in liquid after the chute is formed, the switch is soaked in the liquid, the liquid can corrode the switch, and the contact effect of the switch can be affected after corrosion;

an external liquid level switch with a patent number of CN202121464509.3 comprises a main body switch, a mounting assembly and a protection assembly, wherein the mounting assembly is arranged above the middle part of the main body switch, and the protection assembly is arranged below the main body switch. This external liquid level switch compares with current device, through the dop, can conveniently dismantle the top cap with the upper end between, thereby when needs maintain and clear up inside, thereby the time of workman has been saved, through the plug rod, can carry out quick location installation, can make the installation back more fastening simultaneously, through the screw thread head, can conveniently open the cover of twisting and be connected with the line body, through the sealing washer, can improve the seal when the installation, prevent that steam from causing the interference to the device inside, through the joint, can conveniently separate the upper end after the device is wholly fixed, thereby can maintain the clearance and change it alone;

above-mentioned technical scheme is although can play better clearance effect, but still has certain not enough in its use, and this technical scheme is in the in-process of using, and although the ability is supplementary protects, but its protective component's surface still can be attached certain dust in the use, still need handle protective component's surface when follow-up clearance overhauls, and in its use, protective component's bottom also can't carry out comprehensive protection to detecting probe's bottom, detecting probe's bottom also is easy to attach rubbish impurity, thereby influence its detection effect, also corrode detecting probe's bottom easily simultaneously, consequently, need improve it.

Disclosure of Invention

1. Technical problem to be solved

The utility model aims to solve the problems in the prior art and provides a liquid level switch, which is characterized in that a cleaning mechanism is arranged, so that the device can be started to operate by a driving motor during the use period, a driving motor drives a screw rod to rotate at the moment, the screw rod drives a sliding plate to slide on the inner side of a guide rail, at the moment, a cleaning leather sheath, a first fixing block and a second fixing block can be driven by the sliding plate to slide, and at the moment, the cleaning leather sheath and a cleaning scraping cylinder can be driven to scrape and rub the exposed parts of a detection probe, the outer surfaces of an outer protection pipe and an inner protection pipe, so that the whole cleaning of the device is convenient, the whole cleaning of the device has a good cleaning effect, the follow-up cleaning of the device is convenient, dust impurities attached to the outer surface of the detection probe can be avoided, and the sensitivity of the detection probe can be kept for a long time.

2. Technical proposal

In order to solve the problems, the utility model adopts the following technical scheme.

The liquid level switch comprises a sleeve, wherein a base is fixedly arranged at the bottom of the sleeve, a liquid level switch main body is fixedly arranged at the inner side of the base, a detection probe penetrates through the base and is fixedly arranged at the bottom of the liquid level switch main body, a mounting mechanism is arranged on the front surface of the base, a cleaning mechanism is fixedly arranged at the back surface of the bottom of the base, and a protection mechanism is arranged on the outer surface of the detection probe;

the protection mechanism comprises an outer protection tube, an inner thread is arranged on the inner side of the outer protection tube, an outer thread is arranged at the lower end of the outer surface of the liquid level switch main body, the outer protection tube is in threaded connection with the bottom of the liquid level switch main body, an inner protection tube is inserted into the inner side of the outer protection tube, the inner side of the inner protection tube is in fit connection with the outer surface of the detection probe, an outer thread is also arranged at the upper end of the outer surface of the detection probe, the inner protection tube is in threaded connection with the outer surface of the detection probe, and anti-skid threads are arranged at the upper ends of the outer surfaces of the inner protection tube and the outer protection tube;

the mounting mechanism comprises a rotating sleeve, the rotating sleeve is fixedly mounted in the middle of the back surface of the base, the inner side of the rotating sleeve is rotationally connected with a rotating shaft, and the back surface of the rotating shaft is fixedly provided with a clamping assembly.

Further, the inner bottom and the top of the outer protection tube are respectively provided with a sealing rubber ring, and the top and the bottom of the inner wall of the inner protection tube are also provided with sealing rubber rings.

Further, the cleaning mechanism comprises a guide rail and a driving motor, the guide rail is fixedly arranged at the rear end of the bottom of the base, a screw rod is rotationally connected to the inner side of the guide rail, the driving motor is fixedly arranged at the rear end of the top of the base, the bottom output end of the driving motor penetrates through the base and the guide rail and is fixedly connected with the top of the screw rod, a sliding plate is connected to the outer surface of the screw rod in a threaded manner, the sliding plate is slidingly connected to the inner side of the guide rail, and cleaning leather sleeves, first fixing blocks and second fixing blocks are sequentially and fixedly arranged on the front surface of the sliding plate at equal intervals.

Further, the inner wall of clearance leather sheath is connected with the surface laminating of outer protective tube, the front of first fixed block and second fixed block all is equipped with two sets of clearance and scrapes the section of thick bamboo, the clearance is scraped the inboard of section of thick bamboo and is connected with the bottom of test probe and the surface laminating of outer protective tube respectively.

Further, the clamping assembly comprises a frame body, the frame body is fixedly arranged on the back face of the rotating shaft, a threaded rod is connected to the inner side of the frame body in a rotating mode, threads at two ends of the threaded rod are opposite in rotation direction, two ends of the threaded rod are connected with sliding blocks in a threaded mode, and clamping plates are fixedly arranged on the back face of the sliding blocks.

Further, telescopic top threaded connection has the locating screw, the bottom output of locating screw runs through the top laminating of rotating sleeve and pivot and is connected.

Further, the left end fixed mounting of threaded rod has the knob, the surface of knob also equidistant anti-skidding line that is equipped with, the left side rear end threaded connection of knob has the fixing screw, the right-hand member of fixing screw runs through the left side laminating of knob and framework and is connected.

Furthermore, limiting springs are fixedly arranged on the inner sides of the clamping plates at equal intervals, friction plates are fixedly arranged on the inner sides of the limiting springs, supporting rods are fixedly arranged on the outer sides of the friction plates at equal intervals, and the outer ends of the supporting rods penetrate through the clamping plates.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) This scheme is through setting up installation mechanism for this device is in the use period, the accessible laminates the position of required installation with the framework, this moment drives the threaded rod through turning the knob and rotates, through the inboard mutual slip of threaded rod drive slider at the framework, and then alright supplementary drive splint remove each other, the position of the required installation is installed this device centre gripping with this device centre gripping through the inboard supplementary friction plate that contradicts of splint, the dead screw on the rethread turning the tight knob is fixed this moment can, when the liquid level switch main part direction needs to be adjusted, the accessible turns the rotation of pivot in the inboard of rotating the cover, can assist the direction of adjusting the liquid level switch main part, after the direction is adjusted, the accessible turns the tight pivot in the tight locating screw conflict rotation cover can assist in fixing this device, thereby make this device in the use period, adjustment direction that can be better, only need not hard up knob and dead screw can accomplish the dismouting when needs to dismantle, make this device use the installation dismantle wholly comparatively convenient, it is stronger comparatively convenient to make this device whole practicality.

(2) Through setting up protection machanism for this device is in the during the use, the surface of detecting probe is received with outer protection tube to the accessible, and the rethread is inserted outer protection tube to the inboard detecting probe surface of outer protection tube this moment, can assist the cladding to detecting probe through turning tightly interior protection tube and outer protection tube this moment, thereby be convenient for play better safeguard function to interior protection tube and outer protection tube, can reach better sealed effect during the use, thereby avoid detecting probe surface to appear the condition of corruption, improved this device wholly and used comparatively conveniently, stability is stronger during the use simultaneously.

(3) Through setting up clearance mechanism for this device is in the use period, accessible starts driving motor operation, drive the lead screw through driving motor and rotate this moment, lead screw drive slide is in the inboard of guide rail and is slided, alright drive clearance leather sheath through the slide this moment, first fixed block and second fixed block slip, alright supplementary drive clearance leather sheath and clearance scrape the section that the section was exposed to test probe was scraped to the section, outer protective tube and interior protective tube's surface are scraped to the clearance this device, thereby it is comparatively convenient to make this device wholly clear up, make this device wholly have better cleaning effect, be convenient for this device follow-up clear, can avoid detecting probe surface attached dust impurity, can keep the sensitivity of test probe for a long time, only need continuously start driving motor shifts out the slide from the guide rail inboard in the use simultaneously, alright rotate outer protective tube and interior protective tube dismantlement from liquid level switch main part and test probe this moment, make this device wholly practicality stronger, it is comparatively convenient to use, be worth using widely.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a diagram of the structure of the inspection probe of the present utility model;

FIG. 3 is a side view of the present utility model;

FIG. 4 is a top view of the present utility model;

FIG. 5 is a bottom view of the present utility model;

FIG. 6 is a block diagram of the mounting mechanism of the present utility model;

fig. 7 is a structural diagram of a protective structure according to the present utility model.

The reference numerals in the figures illustrate:

1. a sleeve; 2. a base; 3. a liquid level switch body; 4. a detection probe; 5. a mounting mechanism; 51. a rotating sleeve; 52. a rotating shaft; 53. a clamping assembly; 531. a frame; 532. a threaded rod; 533. a slide block; 534. a clamping plate; 535. a limit spring; 536. a friction plate; 537. a support rod; 54. a knob; 55. a fixed screw; 56. positioning a screw; 6. a cleaning mechanism; 61. a driving motor; 62. a screw rod; 63. a slide plate; 64. cleaning leather sleeves; 65. a first fixed block; 66. a second fixed block; 67. cleaning the scraping cylinder; 68. a guide rail; 7. a protective mechanism; 71. an outer protective tube; 72. an inner protective tube; 73. anti-skid lines.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1-7, a liquid level switch comprises a sleeve 1, wherein a base 2 is fixedly arranged at the bottom of the sleeve 1, a liquid level switch main body 3 is fixedly arranged at the inner side of the base 2, a detection probe 4 is fixedly arranged at the bottom of the liquid level switch main body 3 penetrating through the base 2, a mounting mechanism 5 is arranged at the front side of the base 2, a cleaning mechanism 6 is fixedly arranged at the back side of the bottom of the base 2, and a protection mechanism 7 is arranged on the outer surface of the detection probe 4;

the protection mechanism 7 comprises an outer protection tube 71, an inner thread is arranged on the inner side of the outer protection tube 71, an outer thread is arranged at the lower end of the outer surface of the liquid level switch main body 3, the outer protection tube 71 is in threaded connection with the bottom of the liquid level switch main body 3, an inner protection tube 72 is inserted into the inner side of the outer protection tube 71, the inner side of the inner protection tube 72 is in fit connection with the outer surface of the detection probe 4, an outer thread is also arranged at the upper end of the outer surface of the detection probe 4, the inner protection tube 72 is in threaded connection with the outer surface of the detection probe 4, and anti-skid threads 73 are arranged at the upper ends of the outer surfaces of the inner protection tube 72 and the outer protection tube 71;

the mounting mechanism 5 comprises a rotating sleeve 51, the rotating sleeve 51 is fixedly mounted in the middle of the back surface of the base 2, a rotating shaft 52 is rotatably connected to the inner side of the rotating sleeve 51, and a clamping assembly 53 is fixedly mounted on the back surface of the rotating shaft 52.

Referring to fig. 1, 3 and 7, sealing rubber rings are arranged at the bottom and the top of the inner side of the outer protective tube 71, and sealing rubber rings are also arranged at the top and the bottom of the inner wall of the inner protective tube 72; through setting up sealed rubber ring, the supplementary sealed test probe 4 of accessible sealed rubber ring, and then played better protective effect to test probe 4, can reached better sealing performance and protective properties.

Referring to fig. 1-5, the cleaning mechanism 6 includes a guide rail 68 and a driving motor 61, the guide rail 68 is fixedly mounted at the bottom rear end of the base 2, the inner side of the guide rail 68 is rotatably connected with a screw rod 62, the driving motor 61 is fixedly mounted at the top rear end of the base 2, the bottom output end of the driving motor 61 penetrates through the base 2 and the guide rail 68 and the top of the screw rod 62 to be fixedly connected, a sliding plate 63 is in threaded connection with the outer surface of the screw rod 62, the sliding plate 63 is in sliding connection with the inner side of the guide rail 68, and cleaning leather sleeves 64, a first fixing block 65 and a second fixing block 66 are sequentially and fixedly mounted on the front surface of the sliding plate 63 at equal intervals; through setting up clearance mechanism 6 for during the use, accessible start driving motor 61 drives lead screw 62 drive slide 63 and slides in the inboard of guide rail 68, and then alright drive clearance leather sheath 64, first fixed block 65 and second fixed block 66 remove, thereby conveniently clear up.

Referring to fig. 1-7, the clamping assembly 53 includes a frame 531, the frame 531 is fixedly mounted on the back surface of the rotating shaft 52, a threaded rod 532 is rotatably connected to the inner side of the frame 531, threads at two ends of the threaded rod 532 are opposite in rotation direction, two ends of the threaded rod 532 are respectively and threadedly connected to a slide block 533, and a clamping plate 534 is fixedly mounted on the back surface of the slide block 533; through setting up clamping assembly 53, can be when using, rotate in the inboard of framework 531 through adjusting threaded rod 532, alright adjust slider 533 at this moment in the inboard of framework 531 slides, and then alright drive splint 534 carries out the centre gripping installation to this liquid level switch, makes things convenient for this device to use.

Referring to fig. 1-5, the inner wall of the cleaning leather sheath 64 is attached to the outer surface of the outer protecting tube 71, two groups of cleaning scraping drums 67 are respectively arranged on the front surfaces of the first fixing block 65 and the second fixing block 66, and the inner sides of the cleaning scraping drums 67 are attached to the bottom of the detection probe 4 and the outer surface of the outer protecting tube 71 respectively; through setting up clearance leather sheath 64, accessible first fixed block 65 and second fixed block 66 assist to drive the clearance and scrape a section of thick bamboo 67 and slide, and then alright assist to scrape and scratch clearance to test probe 4, outer protection pipe 71 and interior protection pipe 72 to better cleaning effect has been reached.

Referring to fig. 1-6, anti-slip threads 73 are also arranged on the outer surface of the knob 54 at equal intervals, a fixing screw 55 is connected with the left rear end of the knob 54 in a threaded manner, and the right end of the fixing screw 55 penetrates through the knob 54 and is in fit connection with the left side of the frame 531; through the anti-skid patterns 73 of the outer surface of the knob 54, the knob 54 can be conveniently twisted, the fixing screw 55 is arranged, the knob 54 can be abutted by twisting the fixing screw 55, the screw rod 62 can be conveniently fixed, a good positioning effect is achieved, and the stability of the device is improved.

Referring to fig. 1-4, a positioning screw 56 is screwed on the top of the sleeve 1, and the bottom output end of the positioning screw 56 penetrates through the rotating sleeve 51 and is in fit connection with the top of the rotating shaft 52; through setting up the locating screw 56, accessible twists the locating screw 56 and contradicts pivot 52, and then alright further improvement this liquid level switch stability after the installation.

Referring to fig. 1-7, a limit spring 535 is fixedly installed at an inner side of a clamping plate 534 at equal intervals, a friction plate 536 is fixedly installed at an inner side of the limit spring 535, a supporting rod 537 is fixedly installed at an outer side of the friction plate 536 at equal intervals, and an outer end of the supporting rod 537 penetrates through the clamping plate 534; through setting up spacing spring 535, can be when using, through the supplementary friction plate 536 of contradicting of spacing spring 535, and then improve the stability of laminating installation to set up bracing piece 537, accessible bracing piece 537 contradicts spacing spring 535, and then further improved the stability of this device.

Referring to fig. 1-7, the principle and advantages of use are that during use, the frame 531 can be attached to a desired installation position, at this time, the knob 54 is twisted to drive the threaded rod 532 to rotate, the sliding block 533 is driven to slide inside the frame 531 by the threaded rod 532, and the clamping plates 534 can be assisted to move relative to each other, at this time, the device is clamped and installed to the desired installation position by the limiting springs 535 on the inner sides of the clamping plates 534, at this time, the fixing screw 55 on the knob 54 is twisted to fix, when the direction of the liquid level switch main body 3 needs to be adjusted, the rotating shaft 52 can be twisted to rotate inside the rotating sleeve 51, so that the direction of the liquid level switch main body 3 can be adjusted, after the direction adjustment is completed, the device can be assisted to fix by twisting the positioning screw 56 to abut against the rotating shaft 52 in the rotating sleeve 51, so that during use, the direction of adjustment can be better, only need loosen knob 54 and fixing screw 55 when dismantling can accomplish the dismouting, make this device use the installation to dismantle wholly comparatively convenient, through cup jointing outer protection tube 71 to the surface of test probe 4 in the use, the rethread is inserted outer protection tube 72 to the inboard test probe 4 surface of outer protection tube 71 this moment, can assist the cladding to test probe 4 through turning tightly inner protection tube 72 and outer protection tube 71 this moment, thereby be convenient for play better safeguard function to inner protection tube 72 and outer protection tube 71, can reach better sealed effect during the use, thereby avoid the condition that test probe 4 surface appears corroding, move through starting driving motor 61 during the use, at this moment through driving motor 61 drive lead screw 62 rotation, lead screw 62 drive slide 63 slides in the inboard of guide rail 68, at this moment, the cleaning leather sheath 64, the first fixing block 65 and the second fixing block 66 are driven to slide through the sliding plate 63, at this moment, the cleaning leather sheath 64 and the cleaning scraping cylinder 67 can be driven in an auxiliary mode to clean the exposed part of the detection probe 4, the outer protection tube 71 and the outer surface of the inner protection tube 72, so that the whole cleaning of the device is convenient, the whole cleaning effect is good, the follow-up cleaning of the device is convenient, dust impurities attached to the outer surface of the detection probe 4 can be avoided, the sensitivity of the detection probe 4 can be kept for a long time, and when the detection probe is required to be disassembled in the use process, the sliding plate 63 is removed from the inner side of the guide rail 68 only by continuously starting the driving motor 61, and at this moment, the outer protection tube 71 and the inner protection tube 72 can be rotated to be disassembled from the liquid level switch main body 3 and the detection probe 4, so that the whole practicality of the device is strong.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims (8)

1. A liquid level switch, includes sleeve, its characterized in that: the bottom of the sleeve is fixedly provided with a base, the inner side of the base is fixedly provided with a liquid level switch main body, the bottom of the liquid level switch main body penetrates through the base and is fixedly provided with a detection probe, the front surface of the base is provided with a mounting mechanism, the back surface of the bottom of the base is fixedly provided with a cleaning mechanism, and the outer surface of the detection probe is provided with a protection mechanism;

the protection mechanism comprises an outer protection tube, an inner thread is arranged on the inner side of the outer protection tube, an outer thread is arranged at the lower end of the outer surface of the liquid level switch main body, the outer protection tube is in threaded connection with the bottom of the liquid level switch main body, an inner protection tube is inserted into the inner side of the outer protection tube, the inner side of the inner protection tube is in fit connection with the outer surface of the detection probe, an outer thread is also arranged at the upper end of the outer surface of the detection probe, the inner protection tube is in threaded connection with the outer surface of the detection probe, and anti-skid threads are arranged at the outer surface ends of the inner protection tube and the outer protection tube;

the mounting mechanism comprises a rotating sleeve, the rotating sleeve is fixedly mounted in the middle of the back surface of the base, the inner side of the rotating sleeve is rotationally connected with a rotating shaft, and the back surface of the rotating shaft is fixedly provided with a clamping assembly.

2. A fluid level switch as defined in claim 1, wherein: the inner bottom and the top of the outer protection tube are respectively provided with a sealing rubber ring, and the top and the bottom of the inner wall of the inner protection tube are also provided with sealing rubber rings.

3. A fluid level switch as defined in claim 2, wherein: the cleaning mechanism comprises a guide rail and a driving motor, the guide rail is fixedly arranged at the rear end of the bottom of the base, a screw rod is rotationally connected to the inner side of the guide rail, the driving motor is fixedly arranged at the rear end of the top of the base, the bottom output end of the driving motor penetrates through the base and the guide rail and is fixedly connected with the top of the screw rod, a sliding plate is connected to the outer surface of the screw rod in a threaded manner, the sliding plate is slidingly connected to the inner side of the guide rail, and cleaning leather sleeves, first fixing blocks and second fixing blocks are sequentially and fixedly arranged on the front surface of the sliding plate at equal intervals.

4. A fluid level switch as defined in claim 3, wherein: the inner wall of clearance leather sheath is connected with the surface laminating of outer protective tube, the front of first fixed block and second fixed block all is equipped with two sets of clearance and scrapes the section of thick bamboo, the clearance is scraped the inboard of section of thick bamboo and is connected with the bottom of test probe and the surface laminating of outer protective tube respectively.

5. A fluid level switch as defined in claim 4, wherein: the clamping assembly comprises a frame body, the frame body is fixedly arranged on the back face of the rotating shaft, a threaded rod is connected to the inner side of the frame body in a rotating mode, threads at two ends of the threaded rod are opposite in rotation direction, two ends of the threaded rod are connected with sliding blocks in a threaded mode, and clamping plates are fixedly arranged on the back face of the sliding blocks.

6. A fluid level switch as defined in claim 5, wherein: the top threaded connection of telescopic has the locating screw, the bottom output of locating screw runs through the top laminating of rotating sleeve and pivot and is connected.

7. A fluid level switch as defined in claim 6, wherein: the left end of threaded rod has the knob, the surface of knob is equidistant also to be equipped with the antiskid line, the left side rear end threaded connection of knob has the fixing screw, the right-hand member of fixing screw runs through the left side laminating of knob and framework and is connected.

8. A fluid level switch as defined in claim 7, wherein: limiting springs are fixedly arranged on the inner sides of the clamping plates at equal intervals, friction plates are fixedly arranged on the inner sides of the limiting springs, supporting rods are fixedly arranged on the outer sides of the friction plates at equal intervals, and the outer ends of the supporting rods penetrate through the clamping plates.