Self-powered flow sensor

Abstract

The utility model relates to the technical field of water flow sensors, and discloses a self-powered flow sensor which comprises a desanding mechanism, the desanding mechanism comprises a clamping tooth plate, the top end of the clamping tooth plate is connected with a water wheel bin in a sliding mode, and a reset spring is fixedly connected between the clamping tooth plate and the bottom end of the water wheel bin. The clamping tooth end of the clamping tooth plate is connected with a sliding groove gear in a meshed mode, four sliding columns are slidably connected into a sliding groove in the sliding groove gear, the top ends of the sliding columns are fixedly connected with sliding plates, the four sliding plates are slidably connected into sliding grooves in the fixing groove, and the top ends of the sliding plates are fixedly connected with a fixing shaft. After the situation that the magnetic water wheel is stuck occurs in the water flow sensor, the diameter of the fixing shaft is temporarily reduced through the desanding mechanism, so that the gap between the magnetic water wheel and the fixing shaft is enlarged, then fine sand flows away to eliminate the stuck problem, and meanwhile the problem can be rapidly solved without stopping water flow or disassembling the sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of water flow sensors, in particular to a self-powered 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 corresponding conversion formulas and comparison curves. Therefore, it can be used for water control management and flow calculation. In terms of heat, it can be used in conjunction with a transducer to measure the loss of medium energy over a period of time, such as a heat meter.

[0003] Compared with the Chinese patent application No. 202122746341.1, a self-powered flow sensor is disclosed, which includes a flow sensor body, a magnetic impeller and a magnetic flow guide assembly. A magnetic impeller installation cavity is opened in the middle of the flow sensor body, and a circuit board cavity is opened on the upper right end of the flow sensor body. However, the device has the following problems:

[0004] When it is necessary to detect lakes or waters with a lot of sediment, a flow sensor is needed to detect the extracted water flow. Since the waters contain a lot of sand and gravel, sometimes fine sand and gravel accumulate between the rotor and the fixed shaft of the flow sensor, which can easily cause the rotor to get stuck, and then cause the detection results to deviate. During the inspection and maintenance process, maintenance personnel are required to stop the water flow and disassemble the sensor to eliminate the jamming problem, which wastes a lot of time, and the water flow is forced to stop, which greatly reduces work efficiency. A method to solve the above problems is urgently needed. Summary of the invention

[0005] The purpose of the utility model is to provide a self-powered flow sensor to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-powered flow sensor, including a sand removal mechanism, the sand removal mechanism includes a tooth plate, the top of the tooth plate is slidably connected to a water wheel bin, a reset spring is fixedly connected between the tooth plate and the bottom of the water wheel bin, the tooth end of the tooth plate is meshingly connected to a slide gear, four sliding columns are slidably connected in the slide groove inside the slide groove gear, the sliding column is slidably connected in the slide groove in the fixed groove, and the top of the sliding plate is fixedly connected to a fixed shaft.

[0007] Preferably, a bottom bin is fixedly connected to the outer side of the slide groove gear, a limit plate is fixedly connected to the bottom end of the bottom bin, the latch plate is slidably connected to the limit plate, a control servo is fixedly connected inside the bottom bin, a rotating convex plate is connected to the fixed tube at the output end of the control servo, a bottom spring is fixedly connected to the bottom end of the inner wall of the bottom bin, a push plate is fixedly connected to the top of the bottom spring, the bottom bin can protect the latch plate and the slide groove gear, the push plate can push the sand removal mechanism upward for a short distance, and the sliding column slides at the bottom plate position of the water wheel bin.

[0008] Preferably, a rotating mechanism is provided at the top of the sand removal mechanism, and the rotating mechanism includes a rotating bearing. The fixed end of the rotating bearing is fixedly connected to the outside of the fixed shaft. The diameter of the rotating end of the rotating bearing is slightly larger than the maximum diameter of the four fixed shafts. A magnetic water wheel is fixedly connected to the outside of the rotating end of the rotating bearing. The rotating bearing reduces friction to allow the magnetic water wheel to rotate smoothly. A spring plate is slidably connected to the rotating bearing and the top of the magnetic water wheel.

[0009] Preferably, a water pipe is fixedly connected to the side end of the water wheel compartment, a partition is fixedly connected inside the water wheel compartment, sliding friction occurs between the bottom surface of the partition and the four fixed shafts, sliding friction occurs between the bottom surface of the partition and the rotating end of the rotating bearing, the partition isolates the water flow and the Hall element, and provides space for the top circuit, and a computing device is arranged inside the Hall element to perform necessary calculations.

[0010] Preferably, a rotating shaft is fixedly connected to the top of the rotating end of the rotating bearing, a generator is fixedly connected to the top of the rotating shaft, the generator is fixedly connected to the top surface of the partition, a Hall element is fixedly connected to the side end of the top surface of the partition, a rotation sensor is fixedly connected to the side end of the generator, a processing servo is fixedly connected to the outer wall of the water wheel compartment, a processing convex plate is fixedly connected to the output end of the processing servo, a controller is arranged inside the processing servo, and the generator can generate electricity through the rotation of the magnetic water wheel to complete self-power supply.

[0011] Preferably, a cover plate is fixedly connected to the top of the water wheel bin.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model provides a self-powered flow sensor, which has the following beneficial effects:

[0014] 1. This self-powered flow sensor, through the work of the sand removal mechanism, when the magnetic water wheel of the water flow sensor is stuck, the sand removal mechanism temporarily reduces the diameter of the fixed shaft to increase the gap between the magnetic water wheel and the fixed shaft, thereby allowing the fine sand and gravel to flow away and eliminate the jamming problem. At the same time, there is no need to stop the water flow or disassemble the sensor, so the problem can be solved quickly, safely and efficiently.

[0015] 2. The self-powered flow sensor, through the work of the sand removal mechanism, after the diameter of the fixed shaft becomes smaller, the magnetic water wheel will rotate unstably due to the space limitation of the partition and the water wheel compartment, but it will not separate from the fixed shaft. During the unstable rotation, vibration will be generated, and the fine sand and gravel inside can be cleaned out of the water wheel compartment by vibration, so as to avoid the sand and gravel remaining in the water wheel compartment for a long time and affecting normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional structural diagram from the front perspective.

[0018] Figure 2 It is a three-dimensional structural diagram from a side perspective.

[0019] Figure 3 This is a three-dimensional structural diagram of the interior of the water wheel warehouse.

[0020] Figure 4 This is a three-dimensional structural diagram of the magnetic water wheel.

[0021] Figure 5 This is a three-dimensional structural diagram of the fixed axis.

[0022] Figure 6 This is a three-dimensional structural diagram of the interior of the bottom warehouse.

[0023] Figure 7 This is a three-dimensional structural diagram of the slide gear.

[0024] Figure 8 It is a three-dimensional structural diagram of the bottom side of the push plate.

[0025] In the figure: 1. sand removal mechanism; 101. latch plate; 102. water wheel compartment; 1021. water pipe; 1022. partition; 103. reset spring; 104. slide gear; 105. sliding column; 106. sliding plate; 107. fixed shaft; 108. bottom compartment; 109. limit plate; 110. cover plate; 111. fixed groove; 112. control steering gear; 113. rotating convex plate; 114. bottom spring; 115. push plate; 2. rotating mechanism; 201. rotating bearing; 202. rotating shaft; 203. generator; 204. Hall element; 205. magnetic water wheel; 206. rotating sensor; 207. processing steering gear; 208. processing convex plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7A self-powered flow sensor includes a sand removal mechanism 1, which includes a tooth plate 101. The top of the tooth plate 101 is slidably connected to a water wheel bin 102. A reset spring 103 is fixedly connected between the bottom of the tooth plate 101 and the water wheel bin 102. The tooth end of the tooth plate 101 is meshingly connected to a slide gear 104. Four sliding columns 105 are slidably connected in the slide groove inside the slide gear 104. The top of the sliding column 105 is fixedly connected to a sliding plate 106. The four sliding plates 106 are slidably connected in the slide groove in the fixed groove 111. The top of the sliding plate 106 is fixedly connected to a fixed shaft 107. Before use, the tooth plate 101 is located at the outermost side due to the elastic force of the reset spring 103, thereby making the four The fixed shaft 107 is in the maximum diameter state, so that the fixed shaft 107 and the inner side of the rotating bearing 201 are fixedly connected, so that the outer rotating end of the bearing and the magnetic water wheel 205 can rotate freely. If sand and gravel accumulate between the magnetic water wheel 205 and the fixed shaft 107 for a long time, resulting in a jam, the magnetic water wheel 205 stops rotating, and the rotation sensor 206 sends a signal after sensing, and then the processing steering gear 207 and the control steering gear 112 receive and identify the signal, and then the processing steering gear 207 rotates to drive the processing convex plate 208 to rotate, so that the tooth plate 101 slides on the inner side of the limit plate 109, so that the tooth end of the tooth plate 101 drives the slide groove gear 104 to rotate, and at the same time the reset spring 103 contracts, and the The rotation of the slide gear 104 drives the four internal sliding columns 105 to slide, thereby causing the upper sliding plate 106 to slide in the slide groove of the fixed groove 111, thereby driving the four fixed shafts 107 to move inward and shrink, thereby increasing the gap between the fixed shaft 107 and the magnetic water wheel 205, thereby allowing the sand and gravel to flow away with the water flow to achieve a sand removal effect. When the diameter of the fixed shaft 107 is reduced and the magnetic water wheel 205 and the rotating bearing 201 are temporarily separated from the fixed connection state, due to the limiting effect of the water wheel chamber 102 and the fixed shaft 107, the magnetic gear can still be driven by the water flow to rotate, but the rotation is unstable and lateral vibration is generated during the rotation process. The vibration drives the water flow to vibrate and scour unstably, thereby causing the water flow to impact the water wheel chamber. 102 is cleaned inside, so that the residual sand and gravel inside the water wheel compartment 102 is cleaned out of the water wheel compartment 102, so as to achieve the purpose of cleaning the sand and gravel. When the fixed shaft 107 is reset, the magnetic water wheel 205 and the rotating bearing 201 are reset and resume rotation. In this process, the staff does not need to stop the water flow or remove the sensor to complete the sand removal and cleaning work. At the same time, the steering engine 112 is controlled to start, thereby driving the rotating convex plate 113 to rotate, so that the push plate 115 is pushed upward, so that the sand removal mechanism 1 drives the magnetic water wheel 205 and the rotating bearing 201 to move upward a short distance. A groove is opened on the top of the slide gear 104 to enable the slide gear 104 and the sliding column 105 to slide, and it can be reset after cleaning.

[0028] See also Figure 5 and Figure 6The outside of the chute gear 104 is fixedly connected with a bottom bin 108, the bottom end of the bottom bin 108 is fixedly connected with a limit plate 109, the tooth plate 101 is slidingly connected with the limit plate 109, the bottom bin 108 is fixedly connected with a control steering gear 112, the output end of the control steering gear 112 is fixedly connected with a rotating convex plate 113, the bottom end of the inner wall of the bottom bin 108 is fixedly connected with a bottom spring 114, and the top of the bottom spring 114 is fixedly connected with a push plate 115. The bottom bin 108 can protect the tooth plate 101 and the chute gear 104, and the push plate 115 can push the sand removal mechanism 1 upward for a short distance, and the sliding column 105 slides on the bottom plate position of the water wheel bin 102.

[0029] See also Figure 5 and Figure 7 The top of the four fixed shafts 107 is fixedly connected with a rotating bearing 201, and the fixed end of the rotating bearing 201 is fixedly connected to the outside of the fixed shaft 107. The diameter of the rotating end of the rotating bearing 201 is slightly larger than the maximum diameter of the four fixed shafts 107. The outside of the rotating end of the rotating bearing 201 is fixedly connected with a magnetic water wheel 205. The top of the rotating bearing 201 and the magnetic water wheel 205 are slidably connected with a spring plate. The spring plate is normally used to slide and connect with the rotating bearing 201 and the magnetic water wheel 205 to prevent sand and gravel from flowing into the interior in the water. Once a jam occurs, the rotating bearing 201 and the magnetic water wheel 205 are lifted up a short distance by the push plate 115 and the sand removal mechanism 1, and the spring plate can assist in movement, and can assist in resetting after the sand removal is completed.

[0030] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 A water pipe 1021 is fixedly connected to the side end of the water wheel compartment 102, and a partition 1022 is fixedly connected to the inside of the water wheel compartment 102. There is sliding friction between the bottom surface of the partition 1022 and the four fixed shafts 107, and there is sliding friction between the bottom surface of the partition 1022 and the rotating end of the rotating bearing 201. During operation, the water flowing in the water pipe 1021 will drive the magnetic water wheel 205 to rotate.

[0031] See also Figure 1-7The top of the rotating end of the rotating bearing 201 is fixedly connected to a rotating shaft 202, the top of the rotating shaft 202 is fixedly connected to a generator 203, the generator 203 is fixedly connected to the top surface of the partition 1022, the side end of the top surface of the partition 1022 is fixedly connected to a Hall element 204, the side end of the generator 203 is fixedly connected to a rotation sensor 206, the outer wall of the water wheel chamber 102 is fixedly connected to a processing steering engine 207, the output end of the processing steering engine 207 is fixedly connected to a processing convex plate 208, a controller is arranged inside the processing steering engine 207, the water wheel chamber 102 is filled with water, and the magnetic water wheel 20 5 is driven by the water flow to rotate freely through the rotating bearing 201. During the rotation process, a rapidly changing magnetic field is generated at the position of the Hall element 204 by the rotation, and then the Hall element 204 generates a periodically changing potential difference through the Hall effect. During the rotation of the rotating end of the rotating bearing 201, the top rotating shaft 202 rotates, driving the top generator 203 to start generating electricity, thereby achieving the effect of self-generation, so that the water flow sensor can complete the work without being energized, avoiding the connection of wires, eliminating the limitations of the use environment, and saving energy and being environmentally friendly.

[0032] See also Figure 1 and Figure 6 A cover plate 110 is fixedly connected to the top of the water wheel chamber 102 .

[0033] In summary, in the utility model, before use, the elastic force of the return spring 103 causes the latch plate 101 to be located at the outermost side, thereby causing the four fixed shafts 107 to be in a state of maximum diameter, thereby causing the fixed shaft 107 to be fixedly connected to the inner side of the rotating bearing 201, thereby causing the outer rotating end of the bearing and the magnetic water wheel 205 to rotate freely. During operation, the water flow in the water pipe 1021 drives the magnetic water wheel 205 to rotate, while filling the water wheel compartment 102 with water. The magnetic water wheel 205 is driven by the water flow to rotate freely through the rotating bearing 201. During the rotation process, the rotation is used to generate a rapidly changing magnetic field at the position of the Hall element 204, thereby causing the Hall element 204 to generate a periodically changing potential difference through the Hall effect, and the water flow rate is calculated by the calculating element using the periodic change.

[0034] When the flow sensor is working, due to the long-term operation of the magnetic water wheel 205 and the fixed shaft 107, sand and gravel will be stuck between the magnetic water wheel 205 and the fixed shaft 107, causing the magnetic water wheel 205 and the fixed shaft 107 to become stuck, and the magnetic water wheel 205 stops rotating, and the rotation sensor 206 sends a signal after sensing, and then the processing steering engine 207 and the control steering engine 112 receive and identify the signal, and then the processing steering engine 207 rotates to drive the processing convex plate 208 to rotate (the processing steering engine 207 is a common rotating electronic component, and the rotation angle can be set in advance. When the processing steering engine 207 is started, it can drive the processing convex plate 208 to rotate and lift the push plate 115), so that the tooth plate 101 slides on the inner side of the limit plate 109, thereby making the tooth plate The toothed end 101 drives the slide gear 104 to rotate, and the reset spring 103 contracts, so that the slide gear 104 rotates and drives the four internal sliding columns 105 to slide, so that the upper sliding plate 106 slides in the slide groove of the fixed groove 111, and then drives the four fixed shafts 107 to move inward and contract, so that the gap between the fixed shaft 107 and the magnetic water wheel 205 becomes larger, so that the sand and gravel are flowed away by the water flow to achieve the effect of sand removal. When the sand removal is completed, release your hand and reset the toothed plate 101 through the reset spring 103, so as to drive the slide gear 104 to reset, so that the slide gear 104 drives the fixed shaft 107 to reset through the slide groove and is fixedly connected to the rotating bearing 201 again, thereby restoring the stable rotation of the magnetic water wheel 205.

[0035] In the utility model, when the diameter of the fixed shaft 107 is reduced and the magnetic water wheel 205 and the rotating bearing 201 in the rotating mechanism 2 are temporarily separated from the fixed connection state, due to the limiting effect of the water wheel compartment 102 and the fixed shaft 107, the magnetic gear can still be driven by the water flow to rotate, but the rotation is unstable and lateral vibration is generated during the rotation process. The vibration drives the unstable vibration of the water flow to flush, thereby causing the water flow to clean the inside of the water wheel compartment 102, and then the residual sand and gravel inside the water wheel compartment 102 is cleaned out of the water wheel compartment 102, thereby achieving the purpose of cleaning the sand and gravel. When the fixed shaft 107 is reset, the magnetic water wheel 205 and the rotating bearing 201 are reset again and the rotation is resumed. In this process, the staff does not need to stop the water flow or disassemble the sensor to complete the sand removal and cleaning work. The small vibration distance and short time will not cause damage to the sensor.

[0036] In the utility model, during the rotation of the rotating end of the rotating bearing 201, the top rotating shaft 202 rotates, driving the top generator 203 to start generating electricity, thereby achieving the effect of self-generation, so that the water flow sensor can complete the work without being energized, avoiding the connection of wires, eliminating the limitations of the use environment, and saving energy and being environmentally friendly.

[0037] The standard parts used in the utility model can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0038] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-powered flow sensor, characterized in that: The sand removal mechanism (1) comprises a latching plate (101), the top end of the latching plate (101) being slidably connected to a water wheel chamber (102), a return spring (103) being fixedly connected between the bottom ends of the latching plate (101) and the water wheel chamber (102), the latching end of the latching plate (101) being meshingly connected to a slideway gear (104), four sliding columns (105) being slidably connected in a slideway inside the slideway gear (104), the top end of the sliding column (105) being fixedly connected to a sliding plate (106), the four sliding plates (106) being slidably connected in a slideway inside a fixed groove (111), and the top end of the sliding plate (106) being fixedly connected to a fixed shaft (107).

2. A self-powered flow sensor according to claim 1, characterized in that: The outer side of the slide gear (104) is fixedly connected with a bottom bin (108), the bottom end of the bottom bin (108) is fixedly connected with a limit plate (109), the latch plate (101) is slidably connected with the limit plate (109), and a groove is formed on the top of the slide gear (104).

3. A self-powered flow sensor according to claim 1, characterized in that: A rotating mechanism (2) is arranged at the top of the sand removal mechanism (1), and the rotating mechanism (2) comprises a rotating bearing (201), a fixed end of the rotating bearing (201) is fixedly connected to the outside of the fixed shaft (107), a diameter of the rotating end of the rotating bearing (201) is slightly larger than the maximum diameter of the four fixed shafts (107), and a magnetic water wheel (205) is fixedly connected to the outside of the rotating end of the rotating bearing (201).

4. A self-powered flow sensor according to claim 1, characterized in that: The side end of the water wheel chamber (102) is fixedly connected to a water pipe (1021), the interior of the water wheel chamber (102) is fixedly connected to a partition (1022), the bottom surface of the partition (1022) and the four fixed shafts (107) are in sliding friction, and the bottom surface of the partition (1022) and the rotating end of the rotating bearing (201) are in sliding friction.

5. A self-powered flow sensor according to claim 3, characterized in that: The top end of the rotating end of the rotating bearing (201) is fixedly connected to a rotating shaft (202), the top end of the rotating shaft (202) is fixedly connected to a generator (203), the generator (203) is fixedly connected to the top surface of the partition (1022), and the side end of the top surface of the partition (1022) is fixedly connected to a Hall element (204).

6. A self-powered flow sensor according to claim 1, characterized in that: A cover plate (110) is fixedly connected to the top of the water wheel chamber (102).

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