Water purifier with liquid level detected by pressure sensor

Abstract

The utility model discloses a water purifier for detecting the liquid level through pressure sensors, and relates to the technical field of liquid level detection of water purifiers, the water purifier comprises a water purifier water tank and a water pipe fixedly arranged on the lower portion, micro pressure sensors are arranged on the two sides of the water pipe, a square head fixedly connected with the water pipe is arranged on the lower portion of the water purifier water tank, and a plurality of transverse shafts A are slidably arranged in the middles of the two sides of the square head; clamping mechanisms are arranged at the two ends of each transverse shaft A, two transverse fixing plates fixedly penetrate through the two ends of each transverse shaft A, sealing plugs A are fixedly arranged in the middles of the surfaces of the opposite sides of the transverse fixing plates, transverse shafts B are fixedly arranged in the middles of the surfaces of the sides of the sealing plugs A, and sealing plugs B are fixedly arranged at one ends of the transverse shafts B. The problems that real-time continuous linear detection cannot be achieved, the detection precision is not high, high-precision liquid level detection cannot be achieved, more functions cannot be provided on the water purifier, and replacement is inconvenient are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the liquid level detection technical field of water purifiers, in particular to a water purifier with pressure sensor liquid level detection. BACKGROUND

[0002] There are many water purifier liquid level detection technologies, common ones include metal probe water detection, floating ball water detection and the like, these liquid level detection methods can usually give limited several levels of liquid level. When accurately monitoring water quantity, more levels of liquid level or continuous liquid level may be needed, and the current detection technologies cannot meet the requirements.

[0003] The existing water purifiers usually use contact type and non-contact type liquid level sensors, photoelectric sensors and the like for liquid level monitoring, and have not yet used pressure sensing technology for liquid level monitoring, and cannot realize real-time continuous linear detection, and the detection accuracy is not high, and highly accurate liquid level detection cannot be realized, and more functions cannot be provided on the water purifier, and the existing water purifier liquid level sensors are inconvenient to disassemble, and the water purifier needs to be closed for replacement when disassembled. CONTENT OF THE INVENTION

[0004] In order to improve the problems that real-time continuous linear detection cannot be realized, the detection accuracy is not high, highly accurate liquid level detection cannot be realized, and more functions cannot be provided on the water purifier and replacement is inconvenient, the present application provides a water purifier with pressure sensor liquid level detection.

[0005] The water purifier with pressure sensor liquid level detection provided by the present application adopts the following technical scheme:

[0006] The water purifier with pressure sensor liquid level detection comprises a water purifier water tank and a water pipe fixed at the lower part of the water purifier water tank, the two sides of the water pipe are provided with micro pressure sensors capable of realizing real-time continuous linear detection of the water level, the lower part of the water purifier water tank is provided with a square head fixedly connected with the water pipe, the two sides of the square head are slidably provided with a plurality of horizontal shafts A which are identical in structure, and the two ends of each horizontal shaft A are provided with clamping mechanisms which are identical in structure and mounting mode.

[0007] The clamping mechanism comprises two fixed blocks symmetrically arranged at one end of the horizontal shaft A, the opposite side surfaces of the two fixed blocks are fixedly provided with arc-shaped sleeves abutting against the outer part of the micro pressure sensor, the upper part of the arc-shaped sleeve is slidably provided with an arc-shaped sliding rod abutting against the outer part of the micro pressure sensor, the outer middle parts of the two fixed blocks are fixedly provided with horizontal plates, and the sides of the two horizontal plates away from the fixed blocks are clamped with limiting plates fixedly arranged on the square head.

[0008] Two structure same lateral fixed plates are arranged at both ends of the horizontal shaft A, a sealing plug A is fixed on the middle of the opposite side surface of the lateral fixed plate, a horizontal shaft B is fixed on the middle of the side surface of the sealing plug A away from the fixed block, and a sealing plug B is fixed on the end of the horizontal shaft B away from the sealing plug A and is connected with the square head inner cavity channel.

[0009] By adopting the above technical scheme, the micro pressure sensor technology is adopted, the micro pressure sensor is installed at the bottom of the water tank, the height of the water level of the water tank generates a corresponding proportional pressure value at the bottom of the water tank, then the voltage value collected by the micro pressure sensor is transmitted, and real-time continuous linear detection is realized, the detection precision is high, the height precision liquid level detection is realized, and more functions can be provided by applying the water purifier, the clamping mechanism and the micro pressure sensor cooperate with each other to realize quick replacement of the micro pressure sensor, the lateral fixed plate is fixed with the horizontal shaft A and the sealing plug A at the same time, so that the lateral fixed plate and the sealing plug A can move together when the horizontal shaft moves, and the sealing plug A and the sealing plug B cooperate with each other to alternately seal the pipeline in the square head.

[0010] Preferably, the clamping mechanism further comprises an arc-shaped expansion slot opened on one side of the arc-shaped sleeve, and arc-shaped sliding grooves of the same structure are arranged on both sides of the inner cavity of the arc-shaped expansion slot.

[0011] By adopting the above technical scheme, the arc-shaped expansion slot can provide a contraction space for the arc-shaped sliding rod, and the arc-shaped sliding groove is used for guiding and limiting the arc-shaped sliding rod.

[0012] Preferably, a sliding block is arranged on both sides of the arc-shaped sliding rod and is fixed on the arc-shaped sliding rod.

[0013] By adopting the above technical scheme, the sliding block and the arc-shaped sliding groove cooperate with each other to enable the arc-shaped sliding rod to better slide and be limited in the arc-shaped expansion slot, so that the arc-shaped sliding rod does not separate from the arc-shaped expansion slot during sliding.

[0014] Preferably, a buckle plate is fixed on the outer arc surface of the end of the arc-shaped sliding rod away from the sliding block and is fixedly connected with the upper part of one of the fixed blocks through a bolt.

[0015] By adopting the above technical scheme, the buckle plate can firmly clamp the arc-shaped sliding rod outside the micro pressure sensor, and the arc-shaped sleeve can firmly fix the micro pressure sensor.

[0016] Preferably, a butt joint is fixedly arranged on the middle of the surface on both sides of the horizontal shaft A in the moving direction and is connected with the sealing plug B.

[0017] By adopting the above technical scheme, the butt joint can realize quick alignment and installation of the micro pressure sensor and guide the sealing plug B.

[0018] Preferably, the interface inner cavity is provided with a sealing ring on one side of the opening, which is in abutment with the sealing plug B, and the sealing ring is movably penetrated by the horizontal shaft B on both sides.

[0019] By adopting the above technical scheme, the sealing plug B can provide sealing effect and support and guide the horizontal shaft B.

[0020] Preferably, the limiting plate is provided with a plurality of teeth symmetrically arranged on one side of the horizontal plate, the inclined surfaces of the upper teeth are opposite to those of the lower teeth, and the teeth are respectively clamped and limited with the horizontal plate which is also symmetrically arranged but with opposite hook directions.

[0021] By adopting the above technical scheme, the upper and lower positions of the teeth and the opposite arrangement of the inclined surfaces can be clamped and limited with the horizontally arranged horizontal plate.

[0022] Preferably, the inner arc surface of the arc-shaped telescopic groove is provided as an opening, and the arc-shaped telescopic groove is movably arranged with the arc-shaped sliding rod.

[0023] By adopting the above technical scheme, the opening can better connect the arc-shaped sliding rod with the micro-pressure sensor shell and increase the friction resistance.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The height of the water tank liquid level generates a corresponding proportional pressure value at the bottom of the water tank, which is sensed by the micro-pressure sensor and converted into a voltage value. Then, the micro-pressure sensor converts the sensed pressure value into a voltage value of corresponding proportional size, and transmits it to the data acquisition circuit board, which converts it into actual data of the liquid level height, thereby realizing real-time continuous linear detection with high detection accuracy and highly accurate liquid level detection. The application in water purifiers can provide more functions.

[0026] 2. The micro-pressure sensor is clamped and fixed by the clamping mechanism, and is quickly replaced by cooperating with the horizontal shaft A. At the same time, the cooperation between the micro-pressure sensor and the sealing plug A, the sealing plug B and the sealing ring enables the micro-pressure sensors on both sides to be disassembled and installed on one side, without the need to close the water purifier or drain all the water before replacing and cleaning the micro-pressure sensor. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall view of the present application;

[0028] Figure 2 is the sectional view of the present application;

[0029] Figure 3This is a cross-sectional view of the internal structure of the water pipe of this application;

[0030] Figure 4 This is an enlarged view of the internal structure of the water pipe of this application;

[0031] Figure 5 This is a diagram of the sealing structure positions on both sides of this application;

[0032] Figure 6 This is a structural diagram of the clamping mechanism of this application;

[0033] Figure 7 This is an exploded view of the clamping mechanism of this application.

[0034] Reference numerals: 1, water purifier tank; 2, water pipe; 3, square head; 4, horizontal axis A;

[0035] 5. Clamping mechanism; 51. Fixed block; 52. Arc sleeve; 53. Arc slide bar; 54. Arc expansion slot; 55. Horizontal plate; 56. Limit plate; 57. Arc slide slot; 58. Slider; 59. Buckle plate;

[0036] 6. Horizontal fixing plate; 7. Sealing plug A; 8. Horizontal axis B; 9. Sealing plug B; 10. Sealing ring; 11. Docking port; 12. Micro pressure sensor; 13. Teeth. DETAILED DESCRIPTION

[0037] The following is combined with Figures 1-7 This application is described in further detail.

[0038] An embodiment of the present application discloses a water purifier using a pressure sensor to detect liquid level.

[0039] Reference Figure 1 A water purifier with a pressure sensor for detecting liquid level includes a water purifier tank 1 installed inside the water purifier, and a water pipe 2 is fixedly arranged at the lower part of the water purifier tank 1, and two micro-pressure sensors 12 are provided on both sides of the outer ring surface of the water pipe 2 close to one end of the water purifier tank 1, and the two micro-pressure sensors 12 are located on the same axis. At the same time, the micro-pressure sensor 12 can detect the water level height in real time, continuously and linearly.

[0040] The micro pressure sensor 12 technology works after power supply, can convert the sensed pressure value into voltage value, the height of the water tank 1 liquid level in the water purifier water tank 1 bottom produces corresponding proportion pressure value, the pressure value is sensed by the micro pressure sensor 12 installed in the bottom, the micro pressure sensor 12 converts the sensed pressure value into voltage value of corresponding proportion size, the voltage value is transmitted to the data acquisition circuit board, and the data acquisition circuit board is converted into actual data of liquid level height, and the liquid level condition is monitored by using pressure sensing technology, which can achieve real-time continuous linear detection, and the detection precision is high, and the height accurate liquid level detection can be realized, and the application in the water purifier can provide more functions.

[0041] Referring to Figure 3 , Figure 4 , Figure 6 And the lower part of the water purifier water tank 1 is provided with a square head 3, and the inner ring surface of the square head 3 is fixedly connected with the outer ring surface of the water pipe 2, and a plurality of horizontal shafts A4 are movably arranged at the middle position of the two sides of the square head 3, and the plurality of horizontal shafts A4 are slidably arranged with the square head 3, and the number of the plurality of horizontal shafts A4 is greater than two and is an even number, the minimum number is two, and the plurality of horizontal shafts A4 are the same in structure, and two clamping mechanisms 5 are arranged at the two ends of the plurality of horizontal shafts A4, and the two clamping mechanisms 5 are the same in structure and mounting mode, and the clamping mechanism 5 comprises two fixed blocks 51 fixedly arranged at one end of the horizontal shaft A4, and the two fixed blocks 51 are symmetrically arranged and the lower parts of the two fixed blocks 51 are located on the same axis, and the upper part of one of the two fixed blocks 51 is cut to the height of a buckle plate 59, and an arc sleeve 52 is fixedly arranged on the surface of the opposite side of the two fixed blocks 51, and the inner ring surface of the arc sleeve 52 is matched with the outer shell of the micro pressure sensor 12 and abuts against each other, and an arc expansion slot 54 is formed in one side of the arc sleeve 52, and the inner arc surface of the arc expansion slot 54 is arranged as an opening with the same width as the arc slide rod 53, and the inner cavity side wall of the arc expansion slot 54 is a smooth plane, and the two side walls and the outer ring surface of the arc slide rod 53 are also smooth planes, and the arc expansion slot 54 and the arc slide rod 53 are matched and slidably arranged.

[0042] Referring to Figure 4 , Figure 6 , Figure 7And the two arc-shaped sliding grooves 57 are symmetrically arranged and have the same structure, and the two sliding blocks 58 are symmetrically arranged and have the same structure, and the opposite side surfaces of the two sliding blocks 58 are fixedly connected with one end of the two side walls of the arc-shaped sliding rod 53, so that the arc-shaped sliding rod 53 can slide in the arc-shaped telescopic groove 54 without slipping off, and the outer arc surface of the other end of the arc-shaped sliding rod 53 is fixedly connected with the side surface of the buckle plate 59, and the buckle plate 59 is fixedly connected with the upper part of one of the two fixed blocks 51 by bolts, and the arc-shaped sliding rod 53 and the arc-shaped sleeve 52 are fixed, and the micro-pressure sensor 12 is also fixed, and the surfaces of the two fixed blocks 51 away from the arc-shaped sleeve 52 are fixedly connected with the opposite side surfaces of the two horizontal plates 55, and the two horizontal plates 55 away from the fixed blocks 51 are provided with hooks, and the two horizontal plates 55 away from the fixed blocks 51 are provided with limiting plates 56, and the limiting plates 56 are fixedly connected with the square head 3, and a plurality of teeth 13 are fixedly arranged on the side surface of the horizontal plate 55, and the plurality of teeth 13 have the same structure and can be clamped and fixed with the hooks on the horizontal plate 55, and the plurality of teeth 13 are divided into two groups and are longitudinally symmetrically arranged, and the inclined surfaces of the upper teeth 13 and the lower teeth 13 are opposite, and the horizontal plates 55 arranged on the two fixed blocks 51 at both ends of the horizontal shaft A4 are oppositely arranged, so that the hooks arranged on the horizontal plates 55 are opposite, and the hooks on one end of the horizontal plate 55 correspond to the upper teeth 13 and can be clamped and fixed with each other, and the other end of the horizontal plate 55 corresponds to the lower teeth 13 and can also be clamped and fixed with each other.

[0043] The square head 3 arranged on the outer surface of the water pipe 2 can support and guide the horizontal shaft A4, so that the horizontal shaft A4 can slide more smoothly, and can provide a fixed support position for the limiting plate 56, so that the clamping mechanism 5 can be clamped and fixed with the square head 3, and the micro-pressure sensor 12 is also clamped and fixed, and the micro-pressure sensor 12 is clamped and fixed by the arc-shaped sliding rod 53 and the arc-shaped sleeve 52 through the bolts of the buckle plate 59 and the fixed block 51, and the arc-shaped sliding rod 53 can slide in the arc-shaped telescopic groove 54 arranged on one side of the arc-shaped sleeve 52 through the cooperation of the sliding block 58 and the arc-shaped sliding groove 57, and an opening is opened to take out or place the micro-pressure sensor 12.

[0044] And by separating the horizontal plate 55 outward and the teeth 13, the entire clamping mechanism 5 can be moved, and at this time only need to push the horizontal plate 55 back, and then the horizontal plate 55 drives the fixed block 51 to move, and the fixed block 51 drives the arc sleeve 52, arc slide rod 53 synchronous movement, and then drive the arc slide rod 53, arc sleeve 52 drive micro pressure sensor 12 to move and separate from the inner cavity of the water pipe 2, and at this time by the horizontal shaft A4 fixed with the fixed block 51 to pull the other end of the fixed block 51, and then the other end of the fixed block 51 drives the arc sleeve 52, arc slide rod 53 and micro pressure sensor 12 to move, at the same time makes the micro pressure sensor 12 and the inner cavity of the water pipe 2 to butt joint, until the butt joint is completed, and the hook on the other end of the horizontal plate 55 is just fixed with the corresponding teeth 13, so as to achieve the effect of quickly replacing the micro pressure sensor 12.

[0045] With reference to Figures 3-5 , the horizontal shaft A4 both ends are fixedly provided with a transverse fixed plate 6, and the transverse fixed plate 6 is symmetrical and the same structure, and the surface of the opposite side of the transverse fixed plate 6 is fixedly connected with the outer ring surface of the sealing plug A7 on both sides, and the sealing plug A7 is fixedly provided with a horizontal shaft B8 which is symmetrical on both sides of the surface away from the fixed block 51, and the horizontal shaft B8 is located on the same horizontal plane with the transverse fixed plate 6, and the horizontal shaft B8 is fixedly provided with a sealing plug B9 away from the transverse fixed plate 6, and the sealing plug B9 is fixedly connected with the inner cavity channel of the square head 3 and the butt joint 11, so as to realize sealing, and the square head 3 is fixedly provided with two butt joints 11 on both sides of the surface in the middle, and the two butt joints 11 are consistent in structure and located on the same axis, and the inner cavities of the two butt joints 11 are communicated with the inner cavity of the water pipe 2, so that the inner cavities of the two butt joints 11 can also be communicated with each other, and the positions of the two butt joints 11 are consistent with the moving direction of the horizontal shaft A4, and the inner cavity surfaces of the two butt joints 11 are fixedly provided with a sealing ring 10, and the sealing ring 10 is located on the outer opening side of the butt joint 11 and between the sealing plug B9 and the transverse fixed plate 6, and can abut against the sealing plug B9 and the sealing ring 10 respectively, and the sealing ring 10 is movably provided with the horizontal shaft B8 on both sides of the middle part, so as to realize the abutting action between the sealing plug B9 and the sealing ring 10 respectively.

[0046] Two transverse fixed plates 6 are fixedly connected with both ends of the horizontal shaft A4 and are located between the two clamping mechanisms 5, so that when the fixed block 51 at one end drives the horizontal shaft A4 to move, the transverse fixed plate 6 on the same side can follow the movement, thereby driving the sealing plug A7 on the same side and the horizontal shaft B8 fixedly connected with the sealing plug A7 to move synchronously, and when the horizontal shaft B8 moves, it will push the sealing plug B9 on the same side to move in the same side of the docking port 11, and gradually move into the cavity of the opposite docking port 11 during the following movement, until the sealing plug B9 on the same side blocks the passage of the cavity of the opposite docking port 11 to be sealed, and the sealing plug A7 on the same side abuts against the sealing ring 10 in the cavity of the same side of the docking port 11, forming a double-sealing effect. Conversely, the sealing plug B9 on the opposite side will abut against the sealing ring 10 in the cavity of the same side of the docking port 11, and the horizontal shaft B8, the sealing plug A7 and the transverse fixed plate 6 will be pulled out of the cavity of the same side of the docking port 11. Similarly, the micro-pressure sensor 12 will also be pulled out by following the movement of the clamping mechanism 5 and the horizontal shaft A4, and then be quickly disassembled by the clamping mechanism 5, and then be replaced or cleaned.

[0047] It should be noted that the water tank 1, the water pipe 2 and the micro-pressure sensor 12 are prior art, and the micro-pressure sensor 12 needs to be connected with the data acquisition circuit board, but they are prior art, and their structural principles will not be described in detail here. The probe diameter of the micro-pressure sensor 12 is consistent with the inner diameter of the sealing ring 10, so that the probe of the micro-pressure sensor 12 can be supported while meeting the sealing requirement. The sealing ring 10, the sealing plug B9 and the sealing plug A7 can be made of rubber material with good sealing effect, and the horizontal plate 55 can be made of hard plastic material with certain deformation ability.

[0048] The implementation principle of the water purifier for detecting the liquid level by the pressure sensor is that the micro-pressure sensor 12 is arranged at the lower part of the water tank 1 of the water purifier, and the micro-pressure sensor 12 is powered. When the micro-pressure sensor 12 works, it can convert the liquid level height into a corresponding proportional pressure value at the bottom of the water tank, and then transmit the voltage value to the data acquisition circuit board. The data acquisition circuit board converts the voltage value into the actual data of the liquid level height, so as to realize real-time continuous linear detection with high detection precision, and realize high-precision liquid level detection, and application of the water purifier can provide more functions.

[0049] The micro-pressure sensor 12 needs to be cleaned every once in a while. At this time, it is necessary to first separate the gusset plate 59 from the fixed block 51, and then pull the gusset plate 59 to make the gusset plate 59 slide with the arc-shaped slide rod 53 in the arc-shaped telescopic groove 54 to open the opening of the arc sleeve 52 and the arc-shaped slide rod 53, and then align the probe of the micro-pressure sensor 12 with the opening in the middle of the sealing ring 10 in the docking interface 11 and insert it, and then put the shell of the micro-pressure sensor 12 into the arc-shaped sleeve 52 and the arc-shaped slide rod 53, and then slide the arc-shaped slide rod 53 out and fix the gusset plate 59 and the fixed block 51 with bolts, and then push the fixed block 51, so that the horizontal axis A4 follows the movement, and drives the sealing plug A7, horizontal axis B8, and sealing plug B9 to move synchronously. During the movement, the sealing plug A7, horizontal axis B8, and sealing plug B9 on the other side are moved under the action of the horizontal axis A4. It moves in the opposite direction, and then slowly separates from the inner cavity of the water pipe 2 and the docking interface 11, and drives the micro-pressure sensor 12 to move in the opposite direction through the clamping mechanism 5 set on the opposite side and then separates from the micro-pressure sensor 12. At the same time, the micro-pressure sensor 12 on this side is docked with the inner cavity of the water pipe 2, and when the sealing plug B9 on this side blocks and seals the channel where the opposite docking interface 11 and the opening of the water pipe 2 intersect, the micro-pressure sensor 12 on this side is also docked, and the micro-pressure sensor 12 on the opposite side is also pushed out. The replacement of the two micro-pressure sensors 12 can be completed, and the replaced micro-pressure sensor 12 can be replaced or cleaned. The horizontal axes B8, sealing plugs B9 and sealing rings 10 on both sides can perform sealing operations without turning off the water purifier or draining the water in the water purifier tank 1 in the water purifier.

[0050] The above are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure may be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A water purifier with a pressure sensor for detecting liquid level, characterized in that: The invention comprises a water purifier water tank (1) and a water pipe (2) fixedly arranged at the bottom of the water purifier water tank (1), micro pressure sensors (12) capable of real-time continuous linear water level detection are arranged on both sides of the water pipe (2), a square head (3) fixedly connected to the water pipe (2) is arranged at the bottom of the water purifier water tank (1), a plurality of horizontal axes A (4) with the same structure are slidably arranged at the middle of both sides of the square head (3), and clamping mechanisms (5) with the same structure and installation method are arranged at both ends of the plurality of horizontal axes A (4); The clamping mechanism (5) comprises two fixed blocks (51) fixed at one end of the transverse axis A (4) and symmetrically arranged with each other, an arc-shaped sleeve (52) abutting against the outside of the micro-pressure sensor (12) is fixed on the surface of the opposite side of the two fixed blocks (51), an arc-shaped sliding rod (53) abutting against the outside of the micro-pressure sensor (12) is slidably arranged on the upper part of the arc-shaped sleeve (52), a transverse plate (55) is fixed on the middle part of the outer side of the two fixed blocks (51), and a limit plate (56) fixed to the square head (3) is clamped on the side of the two transverse plates (55) away from the fixed blocks (51); Two transverse fixing plates (6) of the same structure are fixedly provided at both ends of the transverse axis A (4), a sealing plug A (7) is fixedly provided in the middle of the surface of the opposite side of the transverse fixing plate (6), a transverse axis B (8) is fixedly provided in the middle of the surface of the side of the sealing plug A (7) away from the fixed block (51), and a sealing plug B (9) is fixedly provided at the end of the transverse axis B (8) away from the sealing plug A (7) and is engaged with the inner cavity channel of the square head (3).

2. A water purifier with a pressure sensor for detecting liquid level according to claim 1, characterized in that: The clamping mechanism (5) further comprises an arcuate expansion slot (54) provided on one side of the arcuate sleeve (52), and arcuate sliding slots (57) of the same structure are provided in the middle of the side walls on both sides of the inner cavity of the arcuate expansion slot (54).

3. A water purifier with a pressure sensor for detecting liquid level according to claim 2, characterized in that: Slide blocks (58) fixed on the side walls on both sides of one end of the arc-shaped slide rod (53) are provided in the arc-shaped slide groove (57) so as to slide against each other.

4. A water purifier with a pressure sensor for detecting liquid level according to claim 1, characterized in that: A buckle plate (59) is fixedly provided on the outer arc surface of one end of the arc-shaped slide rod (53) away from the slider (58) and is fixedly connected to the upper part of one of the fixed blocks (51) by bolts.

5. The water purifier with a pressure sensor for detecting liquid level according to claim 1, characterized in that: The middle part of the surface of the square head (3) on both sides of the moving direction of the transverse axis A (4) is fixedly penetrated by a docking port (11) for engaging with the sealing plug B (9).

6. A water purifier with a pressure sensor for detecting liquid level according to claim 5, characterized in that: The inner cavity of the docking port (11) is provided with a sealing ring (10) fixed on one side of the opening and abutting against the sealing plug B (9). Both sides of the sealing ring (10) are movably connected with the transverse axis B (8).

7. A water purifier with a pressure sensor for detecting liquid level according to claim 1, characterized in that: The limiting plate (56) is located on one side of the transverse plate (55) and is symmetrically provided with a plurality of teeth (13). The inclined surfaces of the teeth (13) located at the upper portion and the teeth (13) located at the lower portion are in opposite directions. The teeth (13) are respectively engaged with the transverse plate (55) which is also symmetrically provided in the upper and lower portions but has opposite hooking directions for limiting.

8. A water purifier with a pressure sensor for detecting liquid level according to claim 2, characterized in that: The inner arc surface of the arc-shaped telescopic groove (54) is set to be open, and the inner cavity of the arc-shaped telescopic groove (54) and the arc-shaped sliding rod (53) are set to slide with each other.

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