Round sealed photoelectric water flow sensor

Abstract

The utility model relates to a circular sealed photoelectric water flow sensor, which comprises a water passing pipe provided with a mounting port; a groove is formed in one end, extending into the mounting opening, of the detection assembly; the groove forms a first avoiding space; the signal generation assembly is packaged in the detection assembly and is used for generating an optical signal penetrating through the first avoiding space; the rotor is rotationally arranged in the groove and used for cutting the optical signal, and a part of the rotor is located in the water passing pipe. Through the structural arrangement, the signal generation assembly is packaged in the detection assembly, the detection of the fluid flow is realized by generating an optical signal and matching with the rotor, and the sealing performance is enhanced; through the arrangement of the sealing structure, the volume of the fluid in the water passing pipe is directly increased, larger fluid is allowed to flow to drive the rotor to rotate, and then the larger water flow of the fluid can be measured.

Description

Technical Field

[0001] The present application belongs to the technical field of flow detection equipment, and in particular relates to a photoelectric water flow sensor. Background Art

[0002] A water flow sensor is a water flow sensor that outputs pulse signals, current or voltage 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 image curve, so it can be used for water control management and flow calculation.

[0003] At present, the most common water flow sensor on the market is the vortex type or vortex type water flow sensor, which drives the impeller or magnetic rotor inside the sensor through the water flow, and outputs a square wave pulse signal through the Hall sensor element. The pulse is proportional to the water flow. However, the failure rate of this water flow sensor is relatively high, and the main problems are as follows:

[0004] (1) The water quality varies from place to place. Impurities (such as iron, calcium, sand, etc.) in the water will be adsorbed on the magnetic rotor or impeller, causing the sensor to fail.

[0005] (2) At present, photoelectric water flow sensors are used in small flow situations (such as coffee machines, water dispensers, etc.) in the market, and there is an urgent need to develop a large flow application in the gas industry.

[0006] (3) In traditional pipelines, the detection component is located in the installation groove and is sealed only by a sealing ring at the connection. After the impeller or magnetic rotor inside the sensor is in contact with the fluid for a long time, it is easy for water to seep into the inside, and the sealing effect is insufficient.

[0007] In view of this, there is an urgent need to improve the structure of the photoelectric water flow sensor in the prior art to avoid the influence of the fluid and impurities in the fluid on the photoelectric water flow sensor, extend its service life, and measure the fluid flow more accurately. Utility Model Content

[0008] The embodiment of the present application provides a circular sealed photoelectric water flow sensor to solve the problem in the prior art that the photoelectric water flow sensor can only measure a small water flow rate of the fluid and has poor sealing performance.

[0009] In the first aspect, a circular sealed photoelectric water flow sensor is provided, which includes: a water pipe having an installation opening; a detection component having a groove at one end thereof extending into the installation opening; the groove forming a first avoidance space; a signal generating component encapsulated in the detection component and used for generating a light signal passing through the first avoidance space; a rotor rotatably arranged in the groove for cutting the light signal, and a portion of the rotor is located inside the water pipe.

[0010] In some embodiments, the rotor is made of plastic; the rotor includes a central shaft, a rotating drum is disposed outside the central shaft, and a plurality of blades are disposed outside the rotating drum.

[0011] In some embodiments, the detection component is a cylindrical cylinder; the end face of one end of the cylindrical cylinder extending into the installation port is a plane, the groove is located on the plane, a water retaining ring is provided in the installation port, and the plane is against the water retaining ring; the internal channel of the water retaining ring and the groove form a second avoidance space.

[0012] In some embodiments, an axial groove is provided on the end surface of the cylindrical cylinder, and the rotating drum outside the central axis of the rotor is rotatably disposed in the axial groove.

[0013] In some embodiments, the signal generating component includes a signal emitting diode and a signal receiving diode; two light-transmitting portions are provided inside the cylindrical cylinder and on the inner wall of the groove, and the two light-transmitting portions are located on the same straight line as the signal emitting diode and the signal receiving diode; or, the cylindrical cylinder is made of transparent material and is transparent.

[0014] In some embodiments, the cylindrical barrel is provided with two spaced apart tube grooves at one end away from the mounting opening; the signal transmitting diode and the signal receiving diode are respectively arranged in the corresponding tube grooves.

[0015] In some embodiments, a circuit board assembly is further provided at one end of the cylindrical barrel away from the mounting opening, and the circuit board assembly is signal-connected to the signal emitting diode and the signal receiving diode.

[0016] In some embodiments, a circuit board installation groove is further provided at one end of the cylindrical cylinder away from the installation opening, and the circuit board installation groove is communicated with the tube groove; the depth of the circuit board installation groove is less than the depth of the tube groove.

[0017] In some embodiments, a sealing groove is provided around the cylindrical cylinder to seal with the installation port; the size and shape of the sealing groove are matched with the size and shape of the sealing ring.

[0018] In some embodiments, the water pipe includes two water inlet pipes and water outlet pipes that are vertically connected to each other; a circular pipe is provided on the water inlet pipe or the water outlet pipe, and near the connection between the water inlet pipe and the water outlet pipe, and the circular pipe is connected to the inside of the water inlet pipe and the water outlet pipe; the internal channel of the circular pipe is the installation port.

[0019] The beneficial effects of the technical solution provided by this application include:

[0020] A groove is provided on the detection component to form a first avoidance space: the formation of the groove enables the signal generating component to be encapsulated therein and generate a light signal, and also provides a avoidance space for the rotor, which structurally prevents the fluid from directly contacting the signal generating component, thereby playing a certain sealing role; the signal generating component is encapsulated in the detection component and generates a light signal that penetrates the first avoidance space: the signal generating component is encapsulated in the detection component, and detects the fluid flow by generating a light signal and cooperating with the rotor. At the same time, it is located around the first avoidance space, and the light signal is not easily disturbed by the fluid, thereby enhancing the sealing performance;

[0021] On the other hand, the setting of the sealing structure directly increases the volume of the fluid in the water pipe, allowing a larger fluid flow to drive the rotor to rotate, thereby being able to measure a larger water flow rate of the fluid.

[0022] Ultimately, through these structural settings, the sealing of the photoelectric water flow sensor is increased and the upper limit of the fluid flow measurement volume is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of the photoelectric water flow sensor provided in the embodiment of the present application;

[0025] Figure 2 A stereoscopic diagram of a photoelectric water flow sensor provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a first cross-sectional structure provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a second cross-sectional structure provided in an embodiment of the present application;

[0028] Figure 5 A third cross-sectional structural schematic diagram provided for an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the fourth cross-sectional structure provided in an embodiment of the present application.

[0030] In the figure: 1. water pipe; 2. water retaining ring; 3. detection component; 4. rotor; 41. center axis; 42. blade; 5. sealing ring; 6. groove; 7. circuit board assembly; 8. signal generating assembly; 9. sealing groove; 10. pipe groove; 11. circuit board mounting groove; 12. shaft groove; 13. round tube. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The embodiment of the present application provides a circular sealed photoelectric water flow sensor, which can solve the problem in the prior art that the photoelectric water flow sensor can only measure a small water flow rate of the fluid and has poor sealing performance.

[0033] See also Figure 1-6 A circular sealed photoelectric water flow sensor includes a water pipe 1 with a mounting opening; a detection component 3, one end of which extends into the mounting opening and is provided with a groove 6; the groove 6 forms a first avoidance space; a signal generating component 8, which is encapsulated in the detection component 3 and is used to generate an optical signal that penetrates the first avoidance space; a rotor 4, which is rotatably set in the groove 6 and is used to cut the optical signal, and a part of the rotor 4 is located inside the water pipe 1.

[0034] Through the structural setting, the fluid is prevented from directly contacting the optical signal generating component 8, thereby playing a certain sealing role; the signal generating component 8 is encapsulated in the detection component 3, and detects the fluid flow by generating an optical signal and cooperating with the rotor 4. At the same time, it is located around the first avoidance space, and the optical signal is not easily disturbed by the fluid, thereby enhancing the sealing performance; on the other hand, through the setting of the sealing structure, the fluid volume in the water pipe is also directly increased, allowing a larger fluid flow to drive the rotor 4 to rotate, thereby being able to measure a larger water flow of the fluid.

[0035] In some preferred embodiments, the rotor 4 is made of plastic; the rotor 4 includes a central shaft 41, a rotating drum is arranged outside the central shaft 41, and a plurality of blades 42 are arranged outside the rotating drum. This design can effectively utilize the power of the fluid to drive the rotor 4 to operate, and is an important design in the process of measuring water flow; plastic materials usually have good corrosion resistance and wear resistance, and are suitable for use in environments such as water flow sensors that need to be immersed in water for a long time; the number and shape of the blades 42 can affect the sensitivity and stability of the rotation, and by reasonably designing their number and layout, stable operation can be ensured at different flow rates.

[0036] In some preferred embodiments, the end face of the end of the detection component 3 extending into the installation port is a plane, the groove 6 is located on the plane, a water retaining ring 2 is provided in the installation port, and the plane abuts against the water retaining ring 2; the internal channel of the water retaining ring 2 and the groove 6 form a second avoidance space. This design can play the role of waterproofing and avoiding the rotor 4; the plane of the end face and the abutment of the water retaining ring 2 can effectively prevent moisture from entering the interior of the installation port, protecting the detection component 3 from moisture erosion. At the same time, the second avoidance space formed by the internal channel of the water retaining ring 2 and the groove 6 ensures that there will be no water accumulation inside the installation port, ensuring the normal operation of the detection component 3.

[0037] In some preferred embodiments, an axis groove 12 is provided on the end surface of the detection assembly 3, and the rotating drum outside the central axis 41 of the rotor 4 is rotatably arranged in the axis groove 12. This design enables the central axis 41 to be rotatably fixed in the axis groove 12, thereby realizing the stable rotation of the rotor 4. The axis groove 12 provides a fixed axial guide structure to ensure that the rotor 4 can rotate along a predetermined trajectory, while reducing friction and wear during rotation. Through the cooperation of the axis groove 12 and the central axis 41, the deviation and shaking of the rotor 4 are reduced, thereby improving the operating efficiency and life of the rotor 4.

[0038] In some preferred embodiments, the signal generating component 8 includes a signal emitting diode 81 and a signal receiving diode 82; two light-transmitting portions are provided in the detection component 3 and on the inner wall of the groove 6, and the two light-transmitting portions are located on the same straight line as the signal emitting diode 81 and the signal receiving diode 82. With this design, when the fluid flow causes the rotor 4 to rotate, the blades 42 on the rotor 4 will cut off or block the signal passing through the light-transmitting portion. When the blades 42 block the signal, the signal emitted by the signal emitting diode 81 cannot be received by the signal receiving diode 82, resulting in signal interruption; when the blades 42 leave the light-transmitting portion, the signal emitted by the signal emitting diode 81 can be smoothly transmitted to the signal receiving diode 82, and the signal is restored. In this way, the frequency of interruption and recovery of the signal receiving frequency is measured.

[0039] In some preferred embodiments, the signal generating component 8 includes a signal emitting diode 81 and a signal receiving diode 82; the detection component 3 is made of transparent material and is transparent. With this design, when the fluid flow causes the rotor 4 to rotate, the blades 42 on the rotor 4 will cut off or block the signal passing through the detection component. When the blades 42 block the signal, the signal emitted by the signal emitting diode 81 cannot be received by the signal receiving diode 82, resulting in signal interruption; when the blades 42 rotate to leave the detection component 3, the signal emitted by the signal emitting diode 81 can be smoothly transmitted to the signal receiving diode 82, and the signal is restored. In this way, the frequency of interruption and recovery of the signal receiving frequency is measured.

[0040] In some preferred embodiments, the end of the detection component 3 away from the installation port is provided with two spaced apart tube grooves 10; the signal transmitting diode 81 and the signal receiving diode 82 are respectively arranged in the corresponding tube grooves 10. Through this design, it can be ensured that the positions of signal transmission and reception are fixed, making the signal transmission path more certain and accurate. In turn, the measurement accuracy is improved, and the water flow rate is accurately detected.

[0041] In some preferred embodiments, a circuit board component 7 is further provided at one end of the detection component 3 away from the installation port, and the circuit board component 7 is signal-connected to the signal emitting diode 81 and the signal receiving diode 82. Through this design, the circuit board component 7 can output the pulse signal of the signal emitting diode 81 and the signal receiving diode 82, and process it, which may include signal amplification, filtering, denoising and other operations to ensure the output signal quality and stability. The circuit board component 7 is responsible for outputting the processed signal, and is usually connected to a control system or data acquisition equipment to detect water flow in real time, record and analyze data, etc.

[0042] In some preferred embodiments, a circuit board installation groove 11 is further provided at one end of the detection component 3 away from the installation port, and the circuit board installation groove 11 is connected to the tube groove 10; the depth of the circuit board installation groove 11 is less than the depth of the tube groove 10. This arrangement design forms a continuous channel between the signal generating component 8 and the circuit board component 7, which facilitates the transmission and processing of signals, ensures the reliable connection between the circuit board component 7 and the detection component 3, does not interfere with the normal operation of the entire device, and improves the adaptability and stability between the components.

[0043] In some preferred embodiments, the detection component 3 is provided with a sealing groove 9 that seals with the installation port; the size and shape of the sealing groove 9 are adapted to the size and shape of the sealing ring 5. This design can ensure that when the detection component 3 is installed, an effective seal is formed between the sealing groove 9 and the installation port to avoid fluid penetration and protect the internal components from the external environment; the sealing groove 9 is designed to be a shape and size that perfectly matches the sealing ring 5 to ensure the integrity and stability of the seal; the detection component 3 is provided with a sealing groove 9 that fits the sealing ring 5, and by matching the installation port seal, it can effectively protect the internal components and ensure the sealing performance of the device, improve the reliability and safety of the device, and ensure normal operation.

[0044] In some preferred embodiments, the water pipe 1 includes two water inlet pipes and water outlet pipes connected perpendicularly to each other; a round pipe 13 is provided on the water inlet pipe or the water outlet pipe near the connection between the water inlet pipe and the water outlet pipe, and the round pipe 13 is connected to the inside of the water inlet pipe and the water outlet pipe; the internal channel of the round pipe 13 is the installation port. Through this arrangement, the water inlet pipe is used to introduce fluid into the device, and the water outlet pipe is used to discharge fluid from the device; the round pipe 13 is a component connecting the water inlet pipe and the water outlet pipe, located at their connection, and the inside of the round pipe 13 is connected to the inside of the water inlet pipe and the water outlet pipe, playing the role of connecting and guiding water flow; a channel is formed inside the round pipe 13, which is used as a installation port, allowing fluid to pass through and connect to other components of the device.

[0045] A groove is provided on the detection component 3 to form a first avoidance space: the formation of the groove enables the signal generating component 8 to be encapsulated therein and generate an optical signal, and also provides an avoidance space for the rotor 4, which prevents the fluid from directly contacting the signal generating component 8 in structure, thereby playing a certain sealing role; the signal generating component 8 is encapsulated in the detection component 3 and generates an optical signal that penetrates the first avoidance space: the signal generating component 8 is encapsulated in the detection component 3, and detects the fluid flow by generating an optical signal and cooperating with the rotor 4. At the same time, it is located around the first avoidance space, and the optical signal is not easily disturbed by the fluid, thereby enhancing the sealing performance;

[0046] On the other hand, the sealing structure is provided to directly increase the volume of the fluid in the water pipe, allowing a larger fluid flow to drive the rotor 4 to rotate, thereby being able to measure a larger water flow rate of the fluid.

[0047] Ultimately, through these structural settings, the sealing of the photoelectric water flow sensor is increased and the upper limit of the fluid flow measurement volume is greatly improved.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0049] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0050] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A circular sealed photoelectric water flow sensor, characterized in that: It includes: A water pipe (1) having a mounting opening; A detection component (3), one end of which extends into the installation opening and is provided with a groove (6); the groove (6) forms a first avoidance space; A signal generating component (8), which is encapsulated in the detection component (3) and is used to generate an optical signal that penetrates the first avoidance space; A rotor (4) is rotatably disposed in the groove (6) and is used to cut the optical signal, and a portion of the rotor (4) is located inside the water pipe (1).

2. The circular sealed photoelectric water flow sensor according to claim 1, characterized in that: The rotor (4) is made of plastic; The rotor (4) comprises a central shaft (41), a rotating drum is arranged outside the central shaft (41), and a plurality of blades (42) are arranged outside the rotating drum.

3. The circular sealed photoelectric water flow sensor according to claim 2, characterized in that: The detection component (3) is a cylindrical cylinder; The end surface of one end of the cylindrical cylinder extending into the installation opening is a plane, the groove (6) is located on the plane, a water retaining ring (2) is provided in the installation opening, and the plane abuts against the water retaining ring (2); The internal channel of the water retaining ring (2) and the groove (6) form a second avoidance space.

4. The circular sealed photoelectric water flow sensor according to claim 3, characterized in that: An axial groove (12) is provided on the end surface of the cylindrical cylinder, and the rotating cylinder outside the central axis (41) of the rotor (4) is rotatably arranged in the axial groove (12).

5. The circular sealed photoelectric water flow sensor according to claim 4, characterized in that: The signal generating component (8) comprises a signal transmitting diode (81) and a signal receiving diode (82); Two light-transmitting portions are provided in the cylindrical cylinder and on the inner wall of the groove (6), and the two light-transmitting portions are located on the same straight line as the signal emitting diode (81) and the signal receiving diode (82); or, The cylindrical cylinder is made of transparent material and is transparent.

6. The circular sealed photoelectric water flow sensor according to claim 5, characterized in that: The end of the cylindrical cylinder away from the installation opening is provided with two pipe grooves (10) arranged at intervals; The signal transmitting diode (81) and the signal receiving diode (82) are respectively arranged in the corresponding tube groove (10).

7. The circular sealed photoelectric water flow sensor according to claim 5, characterized in that: A circuit board assembly (7) is also provided at one end of the cylindrical barrel away from the mounting opening, and the circuit board assembly (7) is signal-connected to the signal emitting diode (81) and the signal receiving diode (82).

8. The circular sealed photoelectric water flow sensor according to claim 6, characterized in that: The end of the cylindrical cylinder away from the installation opening is also provided with a circuit board installation groove (11), and the circuit board installation groove (11) is connected to the tube groove (10); The depth of the circuit board installation groove (11) is smaller than the depth of the tube groove (10).

9. The circular sealed photoelectric water flow sensor according to claim 6, characterized in that: The cylindrical cylinder is provided with a sealing groove (9) around its periphery for sealing with the mounting opening; The size and shape of the sealing groove (9) are matched with the size and shape of the sealing ring (5).

10. The circular sealed photoelectric water flow sensor according to claim 1, characterized in that: The water pipe (1) comprises two water inlet pipes and a water outlet pipe which are vertically connected to each other; A circular tube (13) is provided on the water inlet pipe or the water outlet pipe, near the connection between the water inlet pipe and the water outlet pipe, and the circular tube (13) is in communication with the inside of the water inlet pipe and the water outlet pipe; The internal passage of the circular tube (13) is the installation opening.

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