An antifreeze water pressure sensor capable of automatically releasing pressure

By using sponges and sealing plates in the water pressure sensor to prevent freezing damage, and using the heat generated by the electronic pressure relief valve and power generation device to achieve automatic water pressure regulation, the problem of water pressure sensors being prone to freezing and unable to automatically adjust water pressure in winter is solved, and the reliability and safety of equipment are improved.

CN115541103BActive Publication Date: 2025-03-14ANHUI LESEN SENSOR TECH CO LTD
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Patent Information

Application Number
CN202211229146.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-10-09
Publication Date
2025-03-14
Estimated Expiration
2042-10-09

AI Technical Summary

Technical Problem

Existing water pressure sensors are prone to freezing in winter and cannot automatically adjust the water pressure inside the water pipe.

Method used

An anti-freeze-type water pressure sensor that can automatically relieve pressure is designed, using a sponge and a sealing plate to prevent water from freezing, automatic water pressure regulation is achieved through an electronic pressure relief valve, and heat generated by the power generation device is used for insulation.

Benefits of technology

Effectively prevent the water pressure sensor from freezing, realize automatic adjustment of the water pressure inside the water pipe, reduce manual intervention, and improve the reliability and use safety of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses an antifreeze type water pressure sensor capable of automatically relieving pressure, comprising a display screen, a protective column and a water pressure sensor body; the protective column is arranged on the lower outer side of the water pressure sensor body, and the outer side of the protective column is surrounded by threads connected to the connector, and a display screen for viewing the water pressure value is arranged above the water pressure sensor body; it also includes: a through hole arranged on the inner front side of the protective column, and an electronic pressure relief valve for automatically relieving pressure is arranged on the inner rear side of the protective column, and a water pipe for discharging the internal water is installed above the protective column. The antifreeze type water pressure sensor capable of automatically relieving pressure blocks the internal water through a sealing plate to prevent the water from contacting the water pressure sensor at the condensation point, squeezes the sponge water through a pressure plate, and heats the water pressure sensor through the heat generated by the internal power generation device to achieve heat preservation of the internal water.
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Description

Technical Field

[0001] The invention relates to the technical field of water pressure sensors, in particular to an antifreeze type water pressure sensor capable of automatically releasing pressure. Background Art

[0002] The water pressure sensor is a common sensor. The water pressure sensor mainly monitors the water pressure inside the water pipe to avoid cracking caused by excessive water pressure inside the water pipe. It is widely used in life. For example, a new water pressure sensor with the publication number CN215726524U. The new water pressure sensor includes: a water pressure sensor body and a ring seat, an insulating cover and a wire mouth arranged on the water pressure sensor body; a rectangular ring groove, the rectangular ring groove is opened on the top of the ring seat, and the bottom of the insulating cover extends into the rectangular ring groove; two surface grooves, both of which are opened on the top of the ring seat; two top blocks, the two top blocks are respectively fixedly mounted on the inner wall of the two surface grooves away from each other; two support plates, the two support plates are respectively fixedly mounted on both sides of the insulating cover; two slide bars, the two slide bars are respectively slidably mounted on the two support plates, which can facilitate the disassembly and assembly of the insulating cover, facilitate maintenance and repair, and prevent the cable connector from falling off; However, there are still problems with the water pressure sensor during use:

[0003] 1. In winter or in cold areas, the water pressure sensor often freezes. Before it melts, the water pressure sensor cannot work normally, which can easily cause the internal ceramic sheet to crack. The performance of the water pressure sensor needs to be tested regularly.

[0004] 2. The water pressure sensor can only detect the internal water pressure, but cannot adjust the water pressure inside the water pipe. The water pressure needs to be adjusted manually.

[0005] Therefore, we propose an antifreeze water pressure sensor that can automatically release pressure in order to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide an antifreeze water pressure sensor capable of automatically releasing pressure, so as to solve the problem raised by the above background technology that the water pressure sensors currently on the market are easily frozen and cannot adjust the water pressure inside the water pipe.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an antifreeze type water pressure sensor capable of automatically releasing pressure, comprising a display screen, a protective column and a water pressure sensor body;

[0008] A protective column is arranged on the lower outer side of the water pressure sensor body, and the outer side of the protective column is surrounded by threads connected to the connector, and a display screen for viewing the water pressure value is arranged above the water pressure sensor body;

[0009] Also includes:

[0010] A through hole is arranged on the front side of the interior of the protective column, an electronic pressure relief valve for automatic pressure relief is arranged on the rear side of the interior of the protective column, and a water pipe for discharging internal water is installed above the protective column;

[0011] A pressure plate is slidably engaged in the interior of the protective column, a sponge for absorbing water is adhered to the top of the pressure plate, and a baffle for blocking water is connected to the bearing below the pressure plate;

[0012] The support rod is slidably engaged with the inner front side of the protection column, and a turbine is arranged at the rear side of the support rod, and a power generation device is arranged inside the turbine.

[0013] Preferably, the inside of the pressure plate and the baffle are provided with openings for allowing water to flow, and the baffle is slidably engaged on the left and right sides of the inside of the protective column, and the left and right sides of the inside of the protective column are provided with straight grooves and rotating grooves for allowing the baffle to move and rotate, the straight grooves and rotating grooves are connected to each other, and the left and right sides of the baffle have a telescopic function, through the telescopic function of the baffle, the baffle can be rotated inside, so that the internal openings are staggered.

[0014] Preferably, a sealing plate for sealing is movably connected to the left side of the lower inner part of the protective column, and a sealing strip for sealing is installed above the sealing plate, and transmission ropes for pulling the sealing plate are fixed on both sides of the sealing plate, and the other end of the transmission rope is installed on the lower gear, and the sealing plate is pulled by rotating the lower gear to make the water pressure sensor body contact with water.

[0015] Preferably, a fixed plate for pushing the support rod is provided on the upper part of the interior of the protective column, and an upper gear for winding a pull rope is connected to the bearing below the fixed plate, and pull ropes for pulling the baffle are fixed on the left and right sides of the upper gear and the upper and lower sides of the baffle. The sponge is pulled by setting the pull rope to squeeze the sponge and process the water adsorbed in the sponge.

[0016] Preferably, the fixing plate and the support rod have the same magnetic properties, and a power generating device is arranged between the rear side of the support rod and the turbine, and the power generating device is connected to the shaft of the turbine, and a telescopic shaft is slidably engaged inside the front shaft of the turbine, and the power generating device is connected to the interior of the protective column through a delivery pipe, and the heat generated by the power generating device is used to heat the protective column, thereby increasing the temperature of the surrounding water and delaying the solidification time of the water.

[0017] Preferably, the inner front bearing of the protective column is connected to a lower gear around which a transmission rope is wound, and a tooth row meshing with the lower gear is provided on the left side of the lower gear, so that the upper gear and the lower gear rotate in opposite directions through the movement of the tooth row, thereby preventing water from entering the interior of the protective column.

[0018] Preferably, a first electric rod for adjusting the position of the lower gear is provided on the inner front side of the protective column, and a second electric rod is provided on the right side of the first electric rod, and a third electric rod for driving the gear row to move is installed on the rear side of the second electric rod, and a gear row for making the lower gear rotate in the opposite direction is provided on the right side of the third electric rod. By arranging the second electric rod, the first electric rod and the third electric rod, the number of rotations of the upper gear and the lower gear can be increased.

[0019] Preferably, a fixed rope for pulling the telescopic shaft is provided between the outer side of the telescopic shaft and the upper movable column, and the upper movable column is slidably engaged with the upper left corner of the interior of the protective column, and a lower movable column for pulling the turbine is slidably engaged with the left side of the interior of the protective column, and the turbine is pulled by the lower movable column to prevent the lower gear from rotating continuously.

[0020] Preferably, a connecting rope for pulling the support rod is fixed between the lower moving column and the support rod, and elastic devices for restoring the lower moving column and the upper moving column to their original devices are provided on the outer sides of the lower moving column and the upper moving column, and the lower moving column is located on the left side of the sealing plate, and the support rod is pulled by the connecting rope, and the support rod is pushed by the internal magnetic setting.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: a sponge and a sealing plate are arranged on the outside of the water pressure sensor, the sealing plate is used to block the internal water, and the water is prevented from always contacting the water pressure sensor at the condensation point; the sponge is used to adsorb the water inside the protective column, and the water is prevented from freezing inside; the sponge water is squeezed by the pressure plate, and the water pressure sensor is heated by the heat generated by the internal power generation device, so that the internal water is kept warm and the possibility of freezing is reduced. The specific contents are as follows:

[0022] The pressure plate is moved upward to squeeze the water inside the sponge, and the water flows to the outside through the water pipe. The pressure plate is moved upward by pulling the rope to reduce the use of electrical equipment. The baffle is rotated to block the water and prevent it from falling downward.

[0023] The sponge and the sealing plate are set to prevent water from continuing to contact the water pressure sensor. The water absorption function of the sponge is used to absorb the water inside, so that the inside is in a dry state, and the water pressure sensor is prevented from freezing. The water pressure sensor is protected and the ceramic diaphragm inside the water pressure sensor is prevented from cracking. At the same time, the turbine is rotated by the flow of water, and the heat generated by the power generation device is used to keep the water inside warm, delaying the freezing time of the surrounding water.

[0024] The water pressure sensor monitors the water pressure inside the water pipe and sends information to the electronic pressure relief valve. The electronic pressure relief valve adjusts the water pressure inside the water pipe. The water pressure sensor not only has the function of monitoring but also has the function of automatic pressure relief. There is no need for manual adjustment of the water pressure inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the main cross-sectional structure of the protection column of the present invention;

[0027] Figure 3 This is a schematic diagram of the top-down section structure of the protection column of the present invention;

[0028] Figure 4 For the present invention Figure 2 The enlarged structural diagram at a in the middle;

[0029] Figure 5 For the present invention Figure 2 The enlarged structural diagram at b in the middle;

[0030] Figure 6 This is a schematic diagram of the support rod structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the first electric pole of the present invention;

[0032] Figure 8 It is a schematic diagram of the baffle structure of the present invention.

[0033] In the figure: 1. display screen; 2. protection column; 3. through hole; 4. water pressure sensor body; 5. sponge; 6. pressure plate; 7. baffle; 8. pull rope; 9. straight groove; 10. rotating groove; 11. sealing plate; 12. sealing strip; 13. transmission rope; 14. opening; 15. electronic pressure relief valve; 16. lower moving column; 17. fixed rope; 18. turbine; 19. water pipe; 20. upper moving column; 21. connecting rope; 22. lower gear; 23. first electric rod; 24. conveying pipe; 25. gear row; 26. support rod; 27. telescopic shaft; 28. fixed plate; 29. ​​upper gear; 30. second electric rod; 31. third electric rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-8 , the present invention provides a technical solution: an antifreeze type water pressure sensor capable of automatically releasing pressure, comprising a display screen 1, a protective column 2 and a water pressure sensor body 4;

[0036] The protective column 2 is arranged on the lower outer side of the water pressure sensor body 4, and the outer side of the protective column 2 is surrounded by threads connected to the connector, and a display screen 1 for viewing the water pressure value is arranged above the water pressure sensor body 4;

[0037] Combination Figure 1 As shown, the water pressure detected by the water pressure sensor body 4 is displayed through the display screen 1, which can be viewed more intuitively. The water pressure sensor body 4 is installed through the setting of the thread to detect the water pressure;

[0038] The through hole 3 is arranged at the inner front side of the protective column 2, and the inner rear side of the protective column 2 is provided with an electronic pressure relief valve 15 for automatic pressure relief, and a water pipe 19 for discharging the inner water is installed above the protective column 2, and further includes: a support rod 26, which is slidably engaged with the inner front side of the protective column 2, and a turbine 18 is arranged at the rear side of the support rod 26, and a power generation device is arranged inside the turbine 18;

[0039] Combination Figure 3 As shown, the water flow generates water pressure to push the turbine 18, thereby causing the turbine 18 to rotate in the direction of the water flow. The rotation of the turbine 18 generates electricity through the connected power generation device. The power generation device generates heat during operation, and the heat is transferred to the inside of the protective column 2 through the delivery pipe 24. The heat of the protective column 2 keeps the water inside the water pressure sensor body 4 warm, so that the temperature of the surrounding water is increased, delaying the time for the water to freeze;

[0040] A sealing plate 11 is movably connected to the left side of the lower inner part of the protection column 2 for sealing, and a sealing strip 12 is installed above the sealing plate 11 for sealing, and a transmission rope 13 for pulling the sealing plate 11 is fixed on both the left and right sides of the sealing plate 11, and the other end of the transmission rope 13 is installed on the lower gear 22;

[0041] Combination Figure 6As shown, the rotation of the turbine 18 drives the lower gear 22 to rotate synchronously, and the rotation of the lower gear 22 causes the transmission rope 13 on the left side to be wound, and the transmission rope 13 on the left side pulls the sealing plate 11 to rotate outward, and the transmission rope 13 on the right side is in a relaxed state, so that the sealing plate 11 can rotate smoothly;

[0042] A fixing plate 28 is provided on the upper part of the protective column 2 to push the support rod 26, and an upper gear 29 for winding the pull rope 8 is connected to the lower bearing of the fixing plate 28, and the pull rope 8 for pulling the baffle 7 is fixed to the left and right sides of the upper gear 29 and the upper and lower sides of the baffle 7;

[0043] The fixing plate 28 and the support rod 26 have the same magnetic properties, and a power generation device is provided between the rear side of the support rod 26 and the turbine 18, and the power generation device is connected to the shaft of the turbine 18, and a telescopic shaft 27 is slidably engaged inside the front shaft of the turbine 18, and the power generation device is connected to the inside of the protective column 2 through the delivery pipe 24;

[0044] The inner front bearing of the protection column 2 is connected with a lower gear 22 for winding the transmission rope 13, and a tooth row 25 meshing with the lower gear 22 is provided on the left side of the lower gear 22;

[0045] A first electric rod 23 for adjusting the position of the lower gear 22 is arranged on the inner front side of the protection column 2, and a second electric rod 30 is arranged on the right side of the first electric rod 23, and a third electric rod 31 for driving the gear row 25 to move is installed on the rear side of the second electric rod 30, and a gear row 25 for making the lower gear 22 rotate in the opposite direction is arranged on the right side of the third electric rod 31;

[0046] Combination Figure 7As shown, before the water temperature approaches the freezing point, the existing Internet of Things is used to control the first electric rod 23. The first electric rod 23 moves the rear gear row 25 to mesh with the lower gear 22. At this time, the upper gear row 25 is not in contact with the upper gear 29. The third electric rod 31 moves to drive the gear row 25 to move synchronously. The movement of the gear row 25 causes the lower gear 22 to rotate in the opposite direction. At this time, the transmission rope 13 on the right is wound, and the transmission rope 13 on the right pulls the sealing plate 11 to rotate to the right. The sealing plate 11 drives the upper sealing strip 12 to rotate synchronously. The sealing function is achieved by setting the sealing strip 12 to prevent water from entering the interior of the protective column 2. When the water pressure detected by the water pressure sensor body 4 is stable, the first electric rod 23 drives the gear row 25 to rotate synchronously. The third electric rod 31 pulls the front tooth row 25 to move in the opposite direction, thereby causing the upper gear 29 to rotate forward, thereby causing the sponge 5 to have the same motion trajectory as the water pressure sensor body 4 that has just been connected, thereby achieving water absorption, keeping the interior dry, and preventing the water pressure sensor body 4 from freezing, thereby protecting the water pressure sensor body 4;

[0047] A fixed rope 17 for pulling the telescopic shaft 27 is arranged between the outer side of the telescopic shaft 27 and the upper moving column 20, and the upper moving column 20 is slidably engaged with the upper left corner of the inner part of the protective column 2, and the lower moving column 16 for pulling the turbine 18 is slidably engaged with the inner left side of the protective column 2; a connecting rope 21 for pulling the support rod 26 is fixed between the lower moving column 16 and the support rod 26, and elastic devices are arranged on the outer sides of the lower moving column 16 and the upper moving column 20 to restore the lower moving column 16 and the upper moving column 20 to the original device, and the lower moving column 16 is in the position of On the left side of the sealing plate 11; the pressing plate 6 is slidably engaged in the interior of the protective column 2, and a sponge 5 for absorbing water is adhered to the top of the pressing plate 6, and a baffle 7 for blocking water is connected to the bearing below the pressing plate 6; the insides of the pressing plate 6 and the baffle 7 are both provided with openings 14 for water flow, and the baffle 7 is slidably engaged in the left and right sides of the interior of the protective column 2, and the left and right sides of the interior of the protective column 2 are both provided with straight grooves 9 and rotating grooves 10 for moving and rotating the baffle 7, the straight grooves 9 and the rotating grooves 10 are connected to each other, and the left and right sides of the baffle 7 have telescopic functions;

[0048] Combination Figure 4-6As shown, when the sealing plate 11 rotates to contact the lower moving column 16, the sealing plate 11 pushes the lower moving column 16, thereby causing the lower moving column 16 to move upward, and the movement of the lower moving column 16 pulls the connecting rope 21, and the connecting rope 21 pulls the support rod 26 to move, and the movement of the support rod 26 drives the turbine 18 to move, and when the lower moving column 16 moves until it can no longer move, the turbine 18 just moves to separate from the lower gear 22, and at the same time, the telescopic shaft 27 of the turbine 18 just moves to the inside of the upper gear 29. Since a damping device is provided on the shaft of the turbine 18, the rotation of the turbine 18 drives the upper gear 29 to rotate synchronously, and the rotation of the upper gear 29 causes the pull rope 8 on the left to be entangled, and the pull rope 8 on the left pulls the pressure plate 6 to move upward, and the pressure plate 6 drives the upper The sponge 5 moves upward synchronously, and the pressure plate 6 drives the baffle 7 below to move upward synchronously. At this time, the opening 14 inside the baffle 7 coincides with the opening 14 inside the pressure plate 6. Since the rotating groove 10 is in an arc shape, the baffle 7 rotates synchronously while moving upward. Since the left and right sides of the baffle 7 have a certain elasticity, the baffle 7 can rotate. When the baffle 7 moves to the inside of the straight groove 9, the opening 14 inside the pressure plate 6 is completely separated from the opening 14 inside the baffle 7. At this time, the water below is isolated from the water above. When the sponge 5 moves until it can no longer move, the pressure plate 6 squeezes the sponge 5, so that the water inside the sponge 5 is squeezed out, and the water is discharged through the water pipe 19. At this time, the water pressure sensor body 4 detects the water pressure.

[0049] Working principle of this embodiment: When using the antifreeze water pressure sensor with automatic pressure relief, Figure 8 As shown, the sponge 5 is provided to absorb the water inside the protective column 2 to prevent the water pressure sensor body 4 from freezing. The electronic pressure relief valve 15 relieves the pressure of the internal water to prevent cracking due to excessive water pressure. The water inside the sponge 5 is squeezed by the pressure plate 6 to make the protective column 2 free of water. At the same time, the kinetic energy is converted into electrical energy through the rotation of the turbine 18. The heat generated by the power generation device directly acts on the inside of the protective column 2, thereby increasing the surrounding water temperature and extending the solidification time. The water pressure sensor body 4 is protected to prevent the ceramic diaphragm inside the water pressure sensor body 4 from freezing and cracking, thereby completing a series of tasks.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An antifreeze water pressure sensor capable of automatically releasing pressure, comprising a display screen (1), a protective column (2) and a water pressure sensor body (4); A protective column (2) is arranged on the lower outer side of the water pressure sensor body (4), and the outer side of the protective column (2) is surrounded by threads for connecting to the connector, and a display screen (1) for viewing the water pressure value is arranged above the water pressure sensor body (4); It is characterized in that Also includes: A through hole (3) is arranged on the front side of the interior of the protective column (2), an electronic pressure relief valve (15) for automatically releasing pressure is arranged on the rear side of the interior of the protective column (2), and a water pipe (19) for discharging water inside is installed above the protective column (2); A pressure plate (6) is slidably engaged inside the protective column (2), a sponge (5) for absorbing water is adhered to the top of the pressure plate (6), and a baffle (7) for blocking water is connected to a bearing below the pressure plate (6); A support rod (26) is slidably engaged with the front side of the interior of the protection column (2), a turbine (18) is arranged on the rear side of the support rod (26), and a power generation device is arranged inside the turbine (18); The pressure plate (6) and the baffle plate (7) are provided with openings (14) for allowing water to flow, and the baffle plate (7) is slidably engaged with the left and right sides of the interior of the protection column (2), and the left and right sides of the interior of the protection column (2) are provided with straight grooves (9) and rotating grooves (10) for allowing the baffle plate (7) to move and rotate, the straight grooves (9) and rotating grooves (10) are connected to each other, and the left and right sides of the baffle plate (7) have a telescopic function; A fixing plate (28) for pushing the support rod (26) is arranged on the upper part of the interior of the protection column (2), and an upper gear (29) for winding a pull rope (8) is connected to a bearing below the fixing plate (28), and a pull rope (8) for pulling the baffle (7) is fixed to the left and right sides of the upper gear (29) and the upper and lower sides of the baffle (7); The fixing plate (28) and the support rod (26) have the same magnetic properties, and a power generation device is provided between the rear side of the support rod (26) and the turbine (18), and the power generation device is connected to the shaft of the turbine (18), and a telescopic shaft (27) is slidably engaged inside the front shaft of the turbine (18), and the power generation device is connected to the inside of the protective column (2) through a delivery pipe (24); A fixed rope (17) for pulling the telescopic shaft (27) is provided between the outer side of the telescopic shaft (27) and the upper movable column (20), and the upper movable column (20) is slidably engaged with the upper left corner of the interior of the protective column (2), and a lower movable column (16) for pulling the turbine (18) is slidably engaged with the left side of the interior of the protective column (2); A connecting rope (21) for pulling the support rod (26) is fixed between the lower moving column (16) and the support rod (26), and elastic devices for restoring the lower moving column (16) and the upper moving column (20) to their original positions are provided on the outer sides of the lower moving column (16) and the upper moving column (20), and the lower moving column (16) is located on the left side of the sealing plate (11).

2. The antifreeze type water pressure sensor capable of automatically releasing pressure according to claim 1, characterized in that: A sealing plate (11) is movably connected to the left side of the lower interior of the protection column (2) for sealing, and a sealing strip (12) is installed above the sealing plate (11) for sealing, and transmission ropes (13) for pulling the sealing plate (11) are fixed on both left and right sides of the sealing plate (11), and the other end of the transmission rope (13) is installed on the lower gear (22).

3. The antifreeze type water pressure sensor capable of automatically releasing pressure according to claim 1, characterized in that: The inner front bearing of the protection column (2) is connected to a lower gear (22) around which the transmission rope (13) is wound, and a tooth row (25) meshing with the lower gear (22) is provided on the left side of the lower gear (22).

4. The antifreeze type water pressure sensor capable of automatically releasing pressure according to claim 1, characterized in that: A first electric rod (23) for adjusting the position of the lower gear (22) is arranged on the front inner side of the protection column (2), a second electric rod (30) is arranged on the right side of the first electric rod (23), a third electric rod (31) for driving the gear row (25) to move is installed on the rear side of the second electric rod (30), and a gear row (25) for causing the lower gear (22) to rotate in the opposite direction is arranged on the right side of the third electric rod (31).

Citation Information

Patent Citations

  • Novel water pressure sensor

    CN215726524U

  • Anti-freezing pressure tapping pipe by means of solar power generation heating

    CN103728091A

  • Outdoor fire hydrant with functions of water pressure value detection and playing

    CN108827524A