A water flow sensor

Abstract

The present invention discloses a water flow sensor, and relates to the technical field of new sensors. The present invention includes a water flow sensor structure and a Hall element, one side of the water flow sensor structure is fixedly connected with the Hall element, the water flow sensor structure is used to introduce water flow and cooperate with the Hall element to complete convenient monitoring of water flow, and also includes a water regulating structure, a water outlet structure and a water inlet body, the top of the water flow sensor structure is fixedly connected with the water regulating structure, one end of the water regulating structure is fixedly connected with the electromagnetic valve structure, and the other end of the water regulating structure is fixedly connected with the water outlet structure. The present invention makes it easy for the device to realize numerical detection of water flow through the design of the water flow sensor structure, which greatly improves the convenience of detection, and through the coordinated design of the electromagnetic valve structure, the water regulating structure and the water outlet structure, the device is easy to realize the change control of water flow size, which greatly improves the practicality of the device.

Description

Technical Field

[0001] The invention relates to the technical field of novel sensors, in particular to a water flow sensor. Background Art

[0002] A water flow sensor refers to a water flow sensing instrument that outputs pulse signals or current, voltage and other signals by sensing water flow. The output of this signal is in a certain linear proportion to the water flow, and has a corresponding conversion formula and proportional curve. Therefore, it can be used for water control management and flow calculation. In terms of thermal power, it can be used in conjunction with a transducer to measure the loss of medium energy over a period of time. Most of the existing water flow sensors with water regulation function are adjusted by stepper motors, but their structure is complex, the control circuit is complex, the cost is high, and they cannot be used on a large scale. Summary of the invention

[0003] The purpose of the present invention is to provide a water flow sensor to solve the existing problem: most of the existing water flow sensors with water regulation function are adjusted by stepping motors, but they have complex structures, complex control circuits, high costs, and cannot be used on a large scale.

[0004] To achieve the above object, the present invention provides the following technical solutions: a water flow sensor, comprising a water flow sensor structure and a Hall element, wherein one side of the water flow sensor structure is fixedly connected with the Hall element, and the water flow sensor structure is used to introduce water flow and cooperate with the Hall element to complete convenient monitoring of water flow;

[0005] It also includes a water regulating structure and a water outlet structure. The top of the water flow sensor structure is fixedly connected to the water regulating structure, one end of the water regulating structure is fixedly connected to the electromagnetic valve structure, and the other end of the water regulating structure is fixedly connected to the water outlet structure. The electromagnetic valve structure is used to cooperate with the water regulating structure to achieve the convenience of flow control, and the water outlet structure is used to export water flow and reduce export noise and detect water flow temperature.

[0006] Preferably, the water flow sensor structure includes a water inlet body, a clamping ring, a lower sleeve, a magnetic core and an upper sleeve, the bottom end of the inner side of the water inlet body is fixedly connected with the clamping ring, the top end of the inner side of the water inlet body is fixedly connected with the upper sleeve, the inner side of the upper sleeve is rotatably connected with the magnetic core, and the bottom end of the magnetic core is rotatably connected with the lower sleeve.

[0007] Preferably, the lower sleeve is in the shape of a spiral blade.

[0008] Preferably, a permanent magnetic pole is fixedly connected to the inner side of the magnetic core, and the permanent magnetic pole and the Hall element are magnetically induced.

[0009] Specifically, because the lower sleeve is shaped like a rotating blade, the water flows through it and generates a rotating motion, thereby driving the magnetic core to rotate. There are permanent magnetic poles on the magnetic core. When the permanent magnetic poles are close to the Hall element, the Hall element senses the magnetic field and converts the magnetic signal into an electrical pulse signal. The pulse frequency is positively correlated with the rotation speed of the magnetic core, and the rotation speed of the magnetic core is positively correlated with the water flow rate. Finally, the conversion relationship between the water flow rate and the pulse frequency is realized, so that the flow rate of the water flow can be displayed by using the Hall element reading.

[0010] Preferably, the solenoid valve structure includes a solenoid valve body, a spring, a limit sleeve and an iron core, and the water adjustment structure includes a sealing sleeve. A limit sleeve is fixed inside the solenoid valve body, and the limit sleeve is slidably connected to the inside of the sealing sleeve. One end of the inner side of the sealing sleeve is fixedly connected to the spring, and the end of the inner side of the sealing sleeve away from the spring is slidably connected to the iron core, and one end of the iron core is connected to the spring.

[0011] In different embodiments, the solenoid valve body can be a normally closed type, that is, it is in a closed state when no power is supplied, or a normally open type, that is, it is in an open state when no power is supplied. Both types can be used, and the only difference is that the arrangement positions of the spring and the iron core are different;

[0012] Preferably, the water regulating structure also includes a rubber head, a base, a sealing gasket, a valve body, a first guide hole and a second guide hole, one end of the iron core is clamped with a rubber head, the outer side of the rubber head is in contact and sealed with a sealing sleeve, one end of the sealing sleeve is in contact and sealed with the base, a sealing gasket is sleeved on the outer side of one end of the base, a first guide hole is opened at the center position of one end of the base, a second guide hole is opened at the top of one end of the base, the base is in contact and sealed with the valve body through the sealing gasket, and one end of the valve body is provided with a water outlet structure.

[0013] Preferably, the water outlet structure includes a small water through hole, a noise reduction core, a water outlet connecting pipe, a temperature sensor and a card. A small water through hole is opened at the bottom end of the inner side of the valve body, one end of the inner side of the valve body is fixedly connected to the noise reduction core, one end of the valve body is provided with a water outlet connecting pipe, and the top of the water outlet connecting pipe is fixedly connected to the temperature sensor through a card.

[0014] The small water through hole is used to avoid sudden changes in water pressure that cause excessive noise. A circular ring is arranged inside the noise reduction core, and the circular ring is arranged eccentrically. The internal through hole of the noise reduction core is designed to be gradually enlarged. When water flows through, the water flow path gradually becomes larger, the water pressure decreases, and the water flow noise is reduced.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The invention makes it easy to realize the change control of water flow size through the coordinated design of the electromagnetic valve structure, the water regulating structure and the water outlet structure, thereby greatly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 A side view of the present invention as a whole;

[0020] Figure 3 A half-section view of the present invention as a whole;

[0021] Figure 4 It is an exploded view of the local structure of the whole invention;

[0022] Figure 5 A bottom view of the present invention as a whole;

[0023] Figure 6 A top view of the present invention as a whole;

[0024] Figure 7 Schematic diagram of the noise reduction core of the present invention.

[0025] In the figure: 1. Water flow sensor structure; 2. Hall element; 3. Solenoid valve structure; 4. Water adjustment structure; 5. Water outlet structure; 6. Water inlet body; 7. Clamp ring; 8. Lower sleeve; 9. Magnetic core; 10. Upper sleeve; 11. Solenoid valve body; 12. Spring; 13. Limit sleeve; 14. Iron core; 15. Rubber head; 16. Sealing sleeve; 17. Base; 18. Sealing gasket; 19. Valve body; 20. First guide hole; 21. Second guide hole; 22. Small water through hole; 23. Noise reduction core; 24. Water outlet connecting pipe; 25. Temperature sensor; 26. Card. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-7A water flow sensor comprises a water flow sensor structure 1 and a Hall element 2. The Hall element 2 is fixedly connected to one side of the water flow sensor structure 1. The water flow sensor structure 1 is used to introduce water flow and cooperate with the Hall element 2 to complete convenient monitoring of water flow;

[0028] It also includes a water regulating structure 4 and a water outlet structure 5. The top of the water flow sensor structure 1 is fixedly connected to the water regulating structure 4, one end of the water regulating structure 4 is fixedly connected to the electromagnetic valve structure 3, and the other end of the water regulating structure 4 is fixedly provided with a water outlet structure 5. The electromagnetic valve structure 3 is used to cooperate with the water regulating structure 4 to achieve the convenience of flow control, and the water outlet structure 5 is used to export water flow and reduce export noise and detect water flow temperature.

[0029] The water flow sensor structure 1 includes a water inlet body 6, a clamp ring 7, a lower sleeve 8, a magnetic core 9 and an upper sleeve 10. The bottom end of the inner side of the water inlet body 6 is fixedly connected with the clamp ring 7, the top end of the inner side of the water inlet body 6 is fixedly connected with the upper sleeve 10, the inner side of the upper sleeve 10 is rotatably connected with the magnetic core 9, and the bottom end of the magnetic core 9 is rotatably connected with the lower sleeve 8;

[0030] The lower sleeve 8 is in the shape of a rotating blade, and a permanent magnetic pole is fixedly connected to the inner side of the magnetic core 9, and the permanent magnetic pole and the Hall element 2 are inductively coupled by magnetic field.

[0031] Specifically, because the lower sleeve 8 is in the shape of a rotating blade, the water flows through it and generates a rotating motion, thereby driving the magnetic core 9 to rotate. There are permanent magnetic poles on the magnetic core 9. When the permanent magnetic poles are close to the Hall element 2, the Hall element 2 senses the magnetic field and converts the magnetic signal into an electrical pulse signal. The pulse frequency is positively correlated with the rotation speed of the magnetic core 9, and the rotation speed of the magnetic core 9 is positively correlated with the water flow rate. Finally, the conversion relationship between the water flow rate and the pulse frequency is realized, so that the flow rate of water flow can be read by using the Hall element 2.

[0032] The solenoid valve structure 3 includes a solenoid valve body 11, a spring 12, a limit sleeve 13 and an iron core 14. The water regulating structure 4 includes a sealing sleeve 16. The limit sleeve 13 is fixed inside the solenoid valve body 11. The sealing sleeve 16 is slidably connected inside the limit sleeve 13. One end of the inner side of the sealing sleeve 16 is connected to the spring 12. The inner end of the sealing sleeve 16 away from the spring 12 is slidably connected to the iron core 14. One end of the iron core 14 is connected to the spring 12.

[0033] The water regulating structure 4 also includes a rubber head 15, a base 17, a sealing gasket 18, a valve body 19, a first guide hole 20 and a second guide hole 21. The rubber head 15 is clamped at one end of the iron core 14, and the outer side of the rubber head 15 is in contact and sealed with the sealing sleeve 16. One end of the sealing sleeve 16 is in contact and sealed with the base 17. The outer side of one end of the base 17 is sleeved with a sealing gasket 18. The center position of one end of the base 17 is provided with a first guide hole 20, and the top end of one end of the base 17 is provided with a second guide hole 21. The base 17 is in contact and sealed with the valve body 19 through the sealing gasket 18, and one end of the valve body 19 is provided with a water outlet structure 5;

[0034] In different embodiments, the solenoid valve body 11 can be a normally closed type, that is, it is in a closed state when no power is supplied, or a normally open type, that is, it is in an open state when no power is supplied. Both types can be used, and the only difference is that the arrangement positions of the spring 12 and the iron core 14 are different;

[0035] The water outlet structure 5 includes a small water through hole 22, a noise reduction core 23, a water outlet connecting pipe 24, a temperature sensor 25 and a card 26. The bottom end of the inner side of the valve body 19 is provided with a small water through hole 22, one end of the inner side of the valve body 19 is fixedly connected with the noise reduction core 23, one end of the valve body 19 is welded with a water outlet connecting pipe 24, and the top end of the water outlet connecting pipe 24 is fixedly connected with the temperature sensor 25 through the card 26.

[0036] Specifically, after the water flows through the upper sleeve 10, it flows from the second guide hole 21 into the left cavity of the sealing gasket 18. At this time, the rubber head 15 blocks the first guide hole 20, and the right cavity of the sealing gasket 18 is connected to the atmosphere, and the pressure is lower than that of the left side. The water pressure on the left side will press the sealing gasket 18 to block the main water flow channel, thus achieving closure.

[0037] Water can only flow out from the small water through hole 22. The small water through hole 22 is used to avoid sudden changes in water pressure and excessive noise. A ring is arranged inside the noise reduction core 23, and the ring is eccentrically arranged. The internal through hole of the noise reduction core 23 is designed to be gradually enlarged. When water flows through, the water flow path gradually becomes larger, the water pressure decreases, and the water flow noise is reduced;

[0038] At this time, because the diameter of the small water through hole 22 is small, the water flow rate will be small;

[0039] When the solenoid valve body 11 is energized, the iron core 14 is sucked up and drives the rubber head 15 to open the first guide hole 20. At this time, the water pressure on the left side of the sealing gasket 18 is reduced, and the water flow can push the sealing gasket 18 and the base 17 to move to the left, thereby opening the main channel. The water flow can flow out from the main channel and the small water through hole 22 at the same time, and the water flow rate will increase.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A water flow sensor, characterized in that: The water flow sensor structure (1) comprises a water flow sensor structure (1) and a Hall element (2), wherein one side of the water flow sensor structure (1) is fixedly connected to the Hall element (2), and the water flow sensor structure (1) is used to introduce water flow and cooperate with the Hall element (2) to complete convenient monitoring of the water flow rate; It also comprises a water regulating structure (4) and a water outlet structure (5), wherein the top of the water flow sensor structure (1) is fixedly connected to the water regulating structure (4), one end of the water regulating structure (4) is fixedly connected to the electromagnetic valve structure (3), and the other end of the water regulating structure (4) is fixedly connected to the water outlet structure (5), the electromagnetic valve structure (3) is used to cooperate with the water regulating structure (4) to achieve the convenience of flow control, and the water outlet structure (5) is used to export water flow and reduce export noise and detect water flow temperature; The water flow sensor structure (1) comprises a water inlet body (6), a clamping ring (7), a lower shaft sleeve (8), a magnetic core (9) and an upper shaft sleeve (10); the lower end of the inner side of the water inlet body (6) is fixedly connected to the clamping ring (7); the upper end of the inner side of the water inlet body (6) is fixedly connected to the upper shaft sleeve (10); the inner side of the upper shaft sleeve (10) is rotatably connected to the magnetic core (9); and the lower end of the magnetic core (9) is rotatably connected to the lower shaft sleeve (8); The solenoid valve structure (3) comprises a solenoid valve body (11), a spring (12), a limiting shaft sleeve (13) and an iron core (14); the water regulating structure (4) comprises a sealing sleeve (16); a limiting shaft sleeve (13) is fixedly disposed inside the solenoid valve body (11); the limiting shaft sleeve (13) is slidably connected inside the limiting shaft sleeve (13); one end of the inner side of the sealing sleeve (16) is fixedly connected to the spring (12); one end of the inner side of the sealing sleeve (16) away from the spring (12) is slidably connected to the iron core (14); one end of the iron core (14) is fixedly connected to the spring (12); The water regulating structure (4) further comprises a rubber head (15), a base (17), a sealing gasket (18), a valve body (19), a first flow guide hole (20) and a second flow guide hole (21); one end of the iron core (14) is clamped with the rubber head (15); the outer side of the rubber head (15) is in contact and seal with the base (17); one end of the sealing sleeve (16) is in contact and seal with the base (17); the outer side of one end of the base (17) is sleeved with a sealing gasket (18); the center position of one end of the base (17) is provided with a first flow guide hole (20); the top end of one end of the base (17) is provided with a second flow guide hole (21); the base (17) is in contact and seal with the valve body (19) through the sealing gasket (18); and one end of the valve body (19) is provided with a water outlet structure (5); The water outlet structure (5) comprises a small water through hole (22), a noise reduction core (23), a water outlet connecting pipe (24), a temperature sensor (25) and a card (26); the small water through hole (22) is provided at the bottom end of the inner side of the valve body (19); one end of the inner side of the valve body (19) is fixedly connected to the noise reduction core (23); one end of the valve body (19) is provided with a water outlet connecting pipe (24); the top end of the water outlet connecting pipe (24) is fixedly connected to the temperature sensor (25) via the card (26).

2. A water flow sensor according to claim 1, characterized in that: The lower shaft sleeve (8) is in the shape of a spiral blade.

3. A water flow sensor according to claim 1, characterized in that: A permanent magnetic pole is fixedly connected to the inner side of the magnetic core (9), and the permanent magnetic pole and the Hall element (2) generate a magnetic induction signal.

4. A water flow sensor according to claim 3, characterized in that: The small water through hole (22) is used to avoid sudden changes in water pressure and excessive noise. A circular ring is arranged inside the noise reduction core (23), and the circular ring is arranged eccentrically. The internal through hole of the noise reduction core (23) is designed to be gradually enlarged. The noise reduction core (23) is used to gradually increase the water flow path when water flows through, reduce the water pressure, and reduce the water flow noise.

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