Flow monitoring device and flow logging apparatus
By employing a purely mechanical container and linkage components in the flow monitoring device, and utilizing the gravity of sewage to drive rotation for flow measurement, the problem of easy damage to electronic sensors is solved, and reliable flow monitoring is achieved in harsh environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING DESIGN GRP CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-31
AI Technical Summary
Existing flow monitoring devices in drainage pipe networks rely on electronic sensors, which are susceptible to damage from high humidity and corrosive media, resulting in high equipment failure rates and increased maintenance costs.
The flow monitoring device adopts a purely mechanical structure. It uses a container to collect sewage and drives the rotation by the gravity of the sewage. Combined with the linkage component, it automatically cuts off the water inlet channel, realizing volumetric flow measurement and avoiding the use of electronic components.
It effectively avoids corrosion damage to electronic components in harsh environments, reduces measurement errors and equipment failures, and improves the reliability and maintenance costs of flow monitoring.
Smart Images
Figure CN122486743A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of flow monitoring technology, specifically to a flow monitoring device and a flow recording device. Background Technology
[0002] In municipal drainage networks and sewage treatment plants, flow monitoring is a crucial step in ensuring normal system operation, optimizing drainage scheduling, and controlling pollution. In drainage networks, sewage typically flows slowly by gravity (unpressurized flow), characterized by low velocity (approximately 0.6~1.2 m / s) and low pressure (not full-pipe flow).
[0003] Currently, commonly used flow monitoring devices mainly include the following types: ultrasonic flow meters (measuring flow velocity through time-of-flight or Doppler effect methods), electromagnetic flow meters (based on the principle of electromagnetic induction), and radar flow meters (using radar waves to measure water surface velocity and water level). However, existing flow monitoring devices typically rely on electronic sensors for data acquisition. The high humidity and corrosive media (such as acidic sewage and hydrogen sulfide gas) inside drainage pipe networks accelerate the oxidation and corrosion of circuit boards and wiring terminals, leading to increased equipment failure rates and maintenance costs. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to provide a flow monitoring device and a flow recording device to solve the problem that in the prior art, flow monitoring devices usually rely on electronic sensors for data acquisition, and electronic components are easily damaged in harsh environments such as high humidity and corrosive media inside drainage pipe networks, which affects the flow monitoring work.
[0005] This invention is achieved through the following technical solution: A flow monitoring device includes a hollow housing, with an inlet and an outlet respectively provided on the top and bottom walls of the housing. The device is characterized by further including a receiving cylinder disposed inside the housing and a sealing disc for covering and blocking the inlet. The receiving cylinder has an open, hollow structure at one end, and the closed end of the receiving cylinder is rotatably connected to the inner wall of the shell through a connector, with the rotation center line perpendicular to the axis of the water inlet hole. The sealing disc is movably connected to the top wall of the housing, and the water inlet is located at one end of the sealing disc's movement trajectory inside the housing. A linkage component is provided between the sealing disc and the receiving cylinder. It can present the following two states: State 1: The inside of the receiving tube is empty, the open end of the receiving tube is tilted upward and abuts against the top wall of the shell, the sealing plate does not cover or block the water inlet hole, and the receiving tube is connected to the water inlet hole; State 2: The inside of the receiving cylinder is filled with sewage. The receiving cylinder rotates on the shell, and the linkage component drives the sealing plate to cover and block the water inlet hole.
[0006] Furthermore, the connecting component includes a rotating shaft and a counterweight. The two ends of the rotating shaft are respectively inserted into the two side walls of the housing and are rotatably engaged. The closed end of the receiving cylinder is fixedly connected to the middle of the rotating shaft, and the open end extends radially away from the rotating shaft. The counterweight is connected to the rotating shaft and is located on the side of the rotating shaft facing away from the receiving cylinder. The weight of the receiving cylinder is less than the weight of the counterweight.
[0007] Furthermore, a sliding rod is provided on the side of the rotating shaft facing away from the receiving cylinder. One end of the sliding rod is fixedly connected to the outer circular surface of the rotating shaft, and the other end extends radially along the rotating shaft. The counterweight is fitted onto the outside of the slide bar and is slidably engaged.
[0008] Furthermore, the sealing disc is rotatably connected to the inner top wall of the housing, and the rotation center line is parallel to the axis of the water inlet hole; The top surface of the sealing disc is in close contact with the inner top surface of the housing. A through hole is provided on the edge of the top surface of the sealing disc, and the water inlet is located on the rotation trajectory of the through hole at one end inside the housing.
[0009] Furthermore, the outer circular surface of the sealing disc is provided with a spiral groove extending along the axial direction of the sealing disc, and the linkage assembly includes a pressure ring and a first spring; The pressure ring is slidably connected to the inner top wall of the housing along the water inlet hole. The pressure ring is sleeved on the outside of the sealing disc. A slider is provided in the annular gap between the pressure ring and the sealing disc. One end of the slider is fixedly connected to the inner circular surface of the pressure ring, and the other end is inserted into the spiral groove and slidably engaged with the spiral groove. One end of the first spring abuts against the inner top surface of the housing, and the other end abuts against the top surface of the pressure ring. In the naturally extended state of the first spring, the through hole and the water inlet hole are misaligned and blocked.
[0010] A flow recording device includes the above-mentioned flow monitoring device, and further includes a counting gear, a bracket detachably fixedly connected to the top surface of the housing, and a protective cover covering the counting gear. The counting gear and the bracket are rotatably connected about the axis of the counting gear. A transmission assembly is provided between the counting gear and the rotating shaft. When the rotating shaft rotates, the transmission assembly drives the counting gear to rotate in a single direction. The protective cover has an observation hole, through which only one tooth of the counting gear can be observed.
[0011] Furthermore, grooves are formed in the middle of multiple teeth on the counting gear, and numbers are engraved in the grooves. The numbers in the multiple grooves increase in circumferential direction along the counting gear.
[0012] Furthermore, the transmission assembly includes an internal tooth ratchet fixedly connected to one end of the counting gear, a rotating rod coaxial with the internal tooth ratchet, and a wedge block adapted to the tooth groove of the internal tooth ratchet. The middle part of the rotating rod is rotatably connected to the bracket about the axis of the rotating rod. One end of the rotating rod is inserted into the internal tooth ratchet, and the other end is connected to the rotating shaft for transmission. The wedge block and the rotating rod are slidably connected at one end within the internal tooth ratchet along the radial direction of the rotating rod. A second spring is provided between the wedge block and the rotating rod. One end of the second spring abuts against the wedge block, and the other end abuts against the rotating rod. In the naturally extended state of the second spring, the tip of the wedge block is inserted into the tooth groove of the internal tooth ratchet.
[0013] Furthermore, a first bevel gear is coaxially fixedly connected to one end of the rotating rod facing away from the internal tooth ratchet, and a second bevel gear is coaxially fixedly connected to one end of the rotating shaft. A transmission shaft is provided between the rotating rod and the rotating shaft. One end of the transmission shaft extends out of the housing through the top wall of the housing, and the middle part of the transmission shaft is rotatably engaged with the housing. The drive shaft is provided with two third bevel gears at both ends, which mesh with the first bevel gear and the second bevel gear respectively.
[0014] Furthermore, multiple counting gears are provided, and the multiple counting gears are coaxial and evenly arranged along the axial direction. Each of the multiple counting gears is independently rotatably connected to the bracket. A transmission gear is provided between any two adjacent counting gears, and multiple transmission gears are arranged in a linear array. The transmission gear and the bracket are rotatably connected around the axis of the transmission gear. The teeth at both ends of the transmission gear mesh with two corresponding counting gears, and the number of teeth at both ends of the transmission gear is different.
[0015] The beneficial effects of this invention are as follows: This flow monitoring and recording device utilizes a receiving cylinder to collect sewage falling from an inlet. When the sewage reaches a certain volume, gravity drives the cylinder to rotate on the casing, emptying the sewage. The rotation and emptying process is considered a measurement cycle, and the volume of sewage inside the cylinder at the moment of rotation is recorded as the flow rate for that cycle. By recording the number of rotation cycles within a given time period, the total sewage flow rate for that period can be estimated. This volumetric flow measurement method uses a purely mechanical structure for data acquisition, eliminating the need for electronic components within the casing and thus avoiding the impact of corrosion or damage to electronic components on flow monitoring.
[0016] Meanwhile, by using a linkage component to drive the sealing disc to move and cover the water inlet hole, the water inlet channel can be automatically cut off when the receiving cylinder rotates and tilts, so that the volume of sewage in the receiving cylinder is the volume of drainage in the measurement cycle, thus reducing measurement error.
[0017] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is an exploded view of an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the receiving cylinder and counterweight in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the sealing disc and pressure ring in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the pressure ring in an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the counting gear in an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the transmission gear in an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the rotating rod and the internal toothed ratchet in an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the rotating rod and wedge block in an embodiment of the present invention; Figure 10 This is a schematic diagram of the planar structure of an embodiment of the present invention; Figure 11 for Figure 10 Sectional view of AA; Figure 12 for Figure 11 Enlarged view of point C in the middle; Figure 13 for Figure 10 Sectional view of BB (State 1); Figure 14 for Figure 10 Sectional view of BB (State 2).
[0019] In the diagram: 1. Shell; 11. Inlet; 12. Outlet; 2. Container; 21. Shaft; 211. Second bevel gear; 22. Counterweight; 23. Slide rod; 3. Sealing disc; 31. Through hole; 32. Spiral groove; 33. Pressure ring; 331. Slider; 34. First spring; 4. Counting gear; 41. Groove; 42. Number; 43. Transmission gear; 5. Bracket; 6. Protective cover; 61. Observation hole; 71. Internal ratchet; 72. Rotating rod; 721. First bevel gear; 73. Wedge block; 74. Second spring; 75. Transmission shaft; 751. Third bevel gear. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.
[0025] Please see Figure 1-14The present invention provides a technical solution: a flow monitoring device, comprising a hollow shell 1, wherein a water inlet 11 and a water outlet 12 are respectively provided on the top wall and bottom wall of the shell 1, characterized in that: it further comprises a receiving cylinder 2 disposed inside the shell 1 and a sealing disc 3 for covering and blocking the water inlet 11; The receiving cylinder 2 has an open and hollow structure at one end, and the closed end of the receiving cylinder 2 is rotatably connected to the inner wall of the shell 1 through a connector, and the rotation center line is perpendicular to the axis of the water inlet hole 11. The sealing disc 3 is movably connected to the top wall of the housing 1. The water inlet 11 is located at one end of the sealing disc 3 on the movement trajectory inside the housing 1. A linkage component is provided between the sealing disc 3 and the receiving cylinder 2. It can present the following two states: State 1: The inside of the receiving tube 2 is empty. The open end of the receiving tube 2 is tilted upward and abuts against the top wall of the shell 1. The sealing plate 3 does not cover or block the water inlet hole 11. The receiving tube 2 is connected to the water inlet hole 11. State 2: The inside of the receiving cylinder 2 is filled with sewage, causing the receiving cylinder 2 to rotate on the shell 1, which drives the sealing plate 3 to cover and block the water inlet hole 11 through the linkage component.
[0026] In this scheme, a receiving cylinder 2 is used to collect sewage falling from the inlet hole 11. When the sewage in the receiving cylinder 2 reaches a certain volume, the sewage's gravity drives the receiving cylinder 2 to rotate on the shell 1, thus emptying the sewage. The rotation and emptying process of the receiving cylinder 2 is considered a measurement cycle, and the volume of sewage stored inside the receiving cylinder 2 when it is triggered to rotate is taken as the sewage flow rate of that measurement cycle. By recording the number of rotation cycles of the receiving cylinder 2 within a certain period, the total sewage flow rate of that period can be estimated. The volumetric flow measurement method utilizes a purely mechanical structure for data acquisition, eliminating the need for electronic components within the shell 1, thus avoiding the impact of corrosion or damage to electronic components on flow monitoring. Simultaneously, a linkage component drives the sealing disc 3 to move and cover the inlet hole 11, automatically cutting off the inlet channel when the receiving cylinder 2 rotates and emptys, ensuring that the sewage volume in the receiving cylinder 2 equals the volume of sewage discharged within that measurement cycle, reducing measurement errors.
[0027] The axis of the water inlet 11 is collinear with the axis of the water outlet 12. The middle of the receiving cylinder 2 along its length can be rotatably connected to the inner wall of the shell 1 (when the axis of the water inlet 11 is vertical, the rotation center line of the receiving cylinder 2 is horizontal). When the receiving cylinder 2 is unloaded (state one, such as...), Figure 13 As shown), the weight of the open section (from the open end of the receiving tube 2 to the rotation center line) is less than the weight of the closed section (from the closed end of the receiving tube 2 to the rotation center line), so that the open end of the receiving tube 2 tilts upward and abuts against the inner top wall of the shell 1, and the opening of the receiving tube 2 is opposite to the opening of the water inlet hole 11 at one end of the shell 1, so that sewage can smoothly enter the receiving tube 2.
[0028] The size of the opening of the water inlet hole 11 at one end inside the housing 1 is smaller than the size of the opening of the receiving cylinder 2. In state one, the sewage flowing out of the water inlet hole 11 completely enters the receiving cylinder 2.
[0029] The length of the closed section is smaller than that of the open section. When the receiving cylinder 2 is full of sewage (or the volume of sewage is sufficient to trigger the rotation of the receiving cylinder 2), the weight of the open section plus the weight of the sewage is greater than the weight of the closed section, which triggers the rotation of the receiving cylinder 2 to change its tilt state. When the open end of the receiving cylinder 2 tilts downward, the sewage is smoothly discharged from the receiving cylinder 2 under its own gravity and flows away from the outlet hole 12. At this time, the difference in gravity between the open and closed sections drives the receiving cylinder 2 to reverse back to the initial position for the next measurement cycle.
[0030] Alternatively, a torsion spring can be installed between the receiving cylinder 2 and the side wall of the housing 1, with one end of the torsion spring fixedly connected to the receiving cylinder 2 and the other end fixedly connected to the side wall of the housing 1. The torsion spring provides elastic support to the receiving cylinder 2 and provides the receiving cylinder 2 with the power to reverse and reset.
[0031] The connecting component can be a shaft. One end of the shaft is fixedly connected to the middle side wall of the receiving cylinder 2, and the other end extends out of the housing 1 through the side wall of the housing 1. The shaft is rotatably connected to the side wall of the housing 1 and sealed with a sealing gasket or similar material. A sensor can be installed outside the housing 1 to record the number of reciprocating rotations of the shaft (number of measurement cycles), which can effectively reduce the influence of the harsh environment inside the housing 1 on the sensor. Magnetic coding sensor: A permanent magnet is embedded at the end of the shaft, and a Hall sensor or reed switch is installed at the corresponding position on the outside of the housing 1. Every time the shaft rotates, the change in the magnetic field triggers the sensor to output a pulse signal.
[0032] Photoelectric encoder: The shaft end is connected to a grating disk, and an infrared through-beam photoelectric sensor is installed on the outside of the housing 1. The rotation is recorded by the number of times the grating is blocked.
[0033] Alternatively, the sealing disc 3 can be slidably or rotatably connected to the inner top surface of the housing 1.
[0034] Sliding connection: A guide groove adapted to the shape of the sealing disc 3 can be opened on the inner top surface of the housing 1. The guide groove covers the position of the water inlet hole 11. By embedding the sealing disc 3 into the guide groove and sliding it, and tightly fitting the top surface of the sealing disc 3 with the plane of the guide groove facing away from the opening, the sealing disc 3 covers and blocks the water inlet hole 11 when it slides to the position of the water inlet hole 11.
[0035] Rotary connection: The top surface of the sealing disc 3 is tightly fitted with the inner top surface of the housing 1, and the sealing disc 3 is rotatably connected to the inner top surface of the housing 1. The rotation center line is parallel to the axis of the sealing disc 3, but not collinear, so that the sealing disc 3 has an eccentric wheel structure. When the longer end of the sealing disc 3 moves to the position of the water inlet hole 11, it can cover and block the water inlet hole 11. When the shorter end moves to the position of the water inlet hole 11, the opening of the water inlet hole 11 is exposed and open.
[0036] In this embodiment: the connecting component includes a rotating shaft 21 and a counterweight 22. The two ends of the rotating shaft 21 are respectively inserted into the two side walls of the housing 1 and rotated together. The closed end of the receiving cylinder 2 is fixedly connected to the middle of the rotating shaft 21, and the open end extends radially away from the rotating shaft 21. The counterweight 22 is connected to the rotating shaft 21 and is located on the side of the rotating shaft 21 facing away from the receiving cylinder 2. The weight of the receiving cylinder 2 is less than the weight of the counterweight 22.
[0037] In this plan, such as Figure 13 , 14 As shown, the receiving cylinder 2 and the counterweight 22 are both fixedly installed on the rotating shaft 21 using bolts and other fasteners. Different specifications of the receiving cylinder 2 and the counterweight 22 can be disassembled and replaced according to usage requirements.
[0038] The weight of the receiving cylinder 2 is less than that of the counterweight 22, but the overall weight of the receiving cylinder 2 when it is full of sewage is greater than that of the counterweight 22. Through gravity balance, the receiving cylinder 2 automatically returns to its initial tilted state (opening upward) after the sewage is emptied, without the need for additional springs or drive mechanisms, thus reducing potential failure points.
[0039] The shaft 21 and the housing 1 are made of a low-friction material (such as a polytetrafluoroethylene bearing), and the inertia of the counterweight 22 helps to overcome the adhesion resistance of impurities in the sewage.
[0040] In this embodiment: A slide rod 23 is provided on the side of the rotating shaft 21 facing away from the receiving cylinder 2. One end of the slide rod 23 is fixedly connected to the outer circular surface of the rotating shaft 21, and the other end extends radially along the rotating shaft 21. The counterweight 22 is sleeved on the outside of the slide bar 23 and is slidably fitted.
[0041] In this scheme, the counterweight 22 and the slide bar 23 are slidably engaged, and the counterweight 22 has the ability to slide along the length of the slide bar 23. The slide bar 23 is regarded as the resistance arm in the lever structure, and the pivot 21 is regarded as the fulcrum. By sliding the counterweight 22, the position of the resistance application point can be changed, that is, the length of the resistance arm can be changed, and the volume of sewage required to trigger the rotation of the receiving cylinder 2 after the water inside the receiving cylinder 2 is adjusted can be adjusted.
[0042] The counterweight 22 can be tightly connected to the rotating shaft 21, and the sliding of the counterweight 22 can be restricted by friction, or it can be fixed by bolts.
[0043] In this embodiment: the sealing disc 3 is rotatably connected to the inner top wall of the housing 1, and the rotation center line is parallel to the axis of the water inlet hole 11; The top surface of the sealing disc 3 is in close contact with the inner top surface of the housing 1. A through hole 31 is provided on the edge of the top surface of the sealing disc 3, and one end of the water inlet hole 11 is located on the rotation trajectory of the through hole 31 inside the housing 1.
[0044] In this plan, such as Figure 13 , 14 As shown, a frustum is provided on the inner top surface of the housing 1 on one side of the water inlet hole 11. The frustum passes through the center of the sealing disc 3 and rotates to engage with it. By rotating the sealing disc 3, the through hole 31 can be driven to move closer to or further away from the water inlet hole 11, so as to achieve the purpose of guiding (aligning) or blocking (misaligning) the water inlet hole 11.
[0045] The rotating motion of the sealing disc 3 can scrape away deposits on the sealing surface, preventing impurities from accumulating and affecting the sealing effect.
[0046] In this embodiment: the outer circular surface of the sealing disk 3 is provided with a spiral groove 32 extending along the axial direction of the sealing disk 3, and the linkage component includes a pressure ring 33 and a first spring 34; The pressure ring 33 is slidably connected to the inner top wall of the housing 1 along the water inlet hole 11. The pressure ring 33 is sleeved on the outside of the sealing disc 3. A slider 331 is provided in the annular gap between the pressure ring 33 and the sealing disc 3. One end of the slider 331 is fixedly connected to the inner circular surface of the pressure ring 33, and the other end is inserted into the spiral groove 32 and slidably engaged with the spiral groove 32. One end of the first spring 34 abuts against the inner top surface of the housing 1, and the other end abuts against the top surface of the pressure ring 33. In the naturally extended state, the through hole 31 and the water inlet hole 11 are misaligned and blocked.
[0047] In this plan, such as Figure 4 As shown, a guide rod is provided on the inner top surface of the housing 1. One end of the guide rod is fixedly connected to the inner top surface of the housing 1, and the other end extends axially along the sealing disc 3 and passes through the pressure ring 33, and is slidably fitted. There are two guide rods, and both guide rods pass through the pressure ring 33, restricting the rotation of the pressure ring 33, so that the pressure ring 33 can only move axially along the sealing disc 3.
[0048] The first spring 34 is sleeved outside the guide rod, which can reduce the risk of the first spring 34 being damaged by torsion or bending, and plays a protective role.
[0049] State one (e.g.) Figure 13 As shown), the weight of counterweight 22 is greater than the weight of receiving cylinder 2 + the weight of sewage (initially zero) + the weight of pressure ring 33 + the elastic force of first spring 34. In state two (e.g.) Figure 14 As shown), the weight of counterweight 22 is less than the weight of receiving cylinder 2 plus the weight of sewage (when triggered).
[0050] During use, during the transition from state one to state two, the receiving cylinder 2 squeezes and lifts the pressure ring 33, the first spring 34 is in a contracted and energy-storing state, the through hole 31 is aligned and connected with the water inlet hole 11, and the sewage slowly flows into the receiving cylinder 2. As the volume of sewage in the receiving cylinder 2 continues to increase, the gravity of the sewage increases accordingly. The first spring 34 pushes the pressure ring 33 and the receiving cylinder 2 to move downward together, and the downward elastic force gradually decreases. The slider 331 on the pressure ring 33 pushes the spiral groove 32 downward, causing the sealing disc 3 to rotate. The through hole 31 rotates away from the water inlet hole 11, reducing the water inlet channel, and the volume of sewage in the receiving cylinder 2 continues to increase. When the first spring 34 is freely extended, the elastic force is zero. The weight of the counterweight 22 is equal to the weight of the receiving cylinder 2 plus the weight of the sewage. The two sides of the rotating shaft 21 are in a balanced state, but the water inlet channel remains unobstructed. The volume of sewage in the receiving cylinder 2 continues to increase. The pressure ring 33 pushes the receiving cylinder 2 to continue to move downward under its own weight. The first spring 34 is stretched, providing an upward pulling force to the pressure ring 33. When the tension of the first spring 34 equals the weight of the pressure ring 33, the pressure ring 33 stops sliding downwards, and the through hole 31 is misaligned with the water inlet hole 11, blocking the water inlet channel. Figure 13 As shown, at this time, the weight of the receiving cylinder 2 plus the weight of the sewage is greater than the weight of the counterweight 22, causing the receiving cylinder 2 to continue to rotate and descend, disengaging from the pressure ring 33, until the sewage is poured out. Under the influence of gravity, the receiving cylinder 2 is driven to reverse and rise, pushing the pressure ring 33 to rise until it returns to its initial position.
[0051] A flow recording device includes the above-mentioned flow monitoring device, and further includes a counting gear 4, a bracket 5 detachably fixedly connected to the top surface of the housing 1, and a protective cover 6 covering the counting gear 4. The counting gear 4 and the bracket 5 are rotatably connected around the axis of the counting gear 4. A transmission assembly is provided between the counting gear 4 and the rotating shaft 21. When the rotating shaft 21 rotates, it drives the counting gear 4 to rotate in a single direction through the transmission assembly. The protective cover 6 has an observation hole 61, and only one tooth of the counting gear 4 can be observed through the observation hole 61.
[0052] In this plan, such as Figure 6 As shown, the counting gear 4 has multiple teeth evenly arranged around its circumference. Different colors can be applied to the teeth to distinguish them, such as red, orange, yellow, green, cyan, blue, and purple. Alternatively, the teeth on the counting gear 4 can be numbered sequentially. The rotation angle of the counting gear 4 can be obtained by observing the color / number of a tooth through the observation hole 61.
[0053] like Figure 1 , 2As shown, the protective cover 6 forms an isolation barrier outside the counting gear 4, preventing accidental rotation of the counting gear 4 by people or animals. The interior of the protective cover 6 can only be observed through the observation hole 61. The bracket 5 and the protective cover 6 can be connected and installed using bolts or similar means. Connection holes are provided on both the edge of the bracket 5 and the edge of the protective cover 6. The threaded end of the bolt is passed sequentially through the connection hole on the protective cover 6 and the connection hole on the bracket, and finally inserted into the corresponding threaded hole on the housing 1 and tightened. This allows the bracket 5 and the protective cover 6 to be detached for maintenance and replacement.
[0054] The transmission assembly can be either a sprocket mechanism or a ratchet mechanism. The sprocket mechanism transmits the power of the rotating shaft 21 to the pawl, causing the pawl to rotate around the circumference of the ratchet. The ratchet is coaxially and fixedly connected to the counting gear 4, so that the ratchet (counting gear 4) is driven to rotate in a single direction during the rotation of the pawl.
[0055] The power of the rotating shaft 21 is transmitted to the counting gear 4 through the transmission component, so that the counting gear 4 rotates in a single direction. In each measurement cycle, the rotating shaft 21 reciprocates, driving the counting gear 4 to rotate by the same angle. The counting gear 4 records the number of cycles in a certain period of time, and the total flow rate can be calculated.
[0056] Alternatively, a gear reducer can be installed on the counting gear 4 to increase the transmission ratio. The input end of the gear reducer is connected to the output end of the transmission assembly, and the output end of the gear reducer is connected to the counting gear 4. For example, the counting gear 4 rotates one tooth's angle every 10 cycles of the rotating shaft 21, thus expanding the recording range of the counting gear 4.
[0057] In this embodiment: a groove 41 is provided in the middle of a plurality of teeth on the counting gear 4, and the number 42 is engraved in the groove 41. The number 42 in the plurality of grooves 41 increases in the circumferential direction of the counting gear 4.
[0058] In this plan, such as Figure 1 As shown, a groove 41 is made in the middle of the tooth to enlarge the area of the plane used to engrave the number 42, allowing for a larger number 42 to be engraved for easier observation. The number 42 is used to represent the number of tooth pitch angles (circumferential pitch angles) in the counting gear 4, such as: tooth pitch angle = 360° / number of teeth; the rotation angle of the counting gear 4 can be quickly calculated using the number 42, and this angle can be divided by the rotation angle of the counting gear 4 in one measurement cycle to obtain the number of cycles. Alternatively, it can directly represent the corresponding number of cycles or the total flow rate.
[0059] In this embodiment: the transmission assembly includes an internal tooth ratchet 71 fixedly connected to one end of the counting gear 4, a rotating rod 72 coaxial with the internal tooth ratchet 71, and a wedge block 73 adapted to the tooth groove in the internal tooth ratchet 71. The middle part of the rotating rod 72 is rotatably connected to the bracket 5 about the axis of the rotating rod 72. One end of the rotating rod 72 is inserted into the internal tooth ratchet 71, and the other end is connected to the rotating shaft 21 for transmission. The wedge block 73 and the rotating rod 72 are slidably connected at one end within the internal ratchet 71 along the radial direction of the rotating rod 72. A second spring 74 is provided between the wedge block 73 and the rotating rod 72. One end of the second spring 74 abuts against the wedge block 73, and the other end abuts against the rotating rod 72. In the naturally extended state of the second spring 74, the tip of the wedge block 73 is inserted into the tooth groove of the internal ratchet 71.
[0060] In this plan, such as Figure 8 , 9 As shown, a slider is provided on one end of the wedge block 73 facing the rotating rod 72. One end of the slider is fixedly connected to the wedge block 73, and the other end extends radially toward the rotating rod 72, passes through the rotating rod 72, and slides in cooperation with the rotating rod 72. The slider is prismatic, allowing it to slide along its length (radial direction of the rotating rod 72).
[0061] The second spring 74 is sleeved outside the slider and provides elastic support for the wedge block 73. When the second spring 74 is in its naturally extended state, the tip of the wedge block 73 is inserted into the tooth groove of the internal ratchet 71 and is engaged with the internal ratchet 71.
[0062] When in use, the rotating shaft 21 rotates forward, driving the rotating rod 72 and the wedge block 73 to rotate forward together. The wedge block 73 abuts against the teeth of the internal ratchet 71, pushing the internal ratchet 71 and the counting gear 4 to rotate. The rotating shaft 21 reverses to its initial position, and the rotating rod 72 and wedge block 73 reverse together. The inclined surface of the wedge block 73 contacts and abuts against the tooth surface of the internal ratchet 71, pushing and lifting the wedge block 73. The wedge block 73 slides closer to the rotating rod 72 with the slider, and the second spring 74 contracts to store energy until the wedge block 73 slides past the teeth of the internal ratchet 71. Therefore, the rotating rod 72 can only drive the counting gear 4 to rotate in the forward direction.
[0063] In this embodiment: the first bevel gear 721 is coaxially fixedly connected to one end of the rotating rod 72 facing away from the internal tooth ratchet 71, and the second bevel gear 211 is coaxially fixedly connected to one end of the rotating shaft 21; A transmission shaft 75 is provided between the rotating rod 72 and the rotating shaft 21. One end of the transmission shaft 75 extends out of the housing 1 through the top wall of the housing 1, and the middle part of the transmission shaft 75 is rotatably engaged with the housing 1. The drive shaft 75 has two third bevel gears 751 at both ends, which mesh with the first bevel gear 721 and the second bevel gear 211 respectively.
[0064] In this scheme, the tooth pitch angle of the internal ratchet 71 is equal to the tooth pitch angle of the counting gear 4. The number of teeth of the first bevel gear 721 is greater than the number of teeth of the corresponding third bevel gear 751. The number of teeth of the second bevel gear 211 is less than the number of teeth of the corresponding third bevel gear 751. The two third bevel gears 751 can be selected as standard bevel gears with the same or different specifications according to actual usage requirements.
[0065] By adjusting the tooth ratio of the two sets of bevel gears, the forward / reverse rotation angle of the rotating rod 72 within one measurement cycle is equal to the tooth pitch angle of the internal ratchet 71. That is, the counting gear 4 rotates one tooth in one measurement cycle. Initially, one of the teeth is aligned with the observation hole 61 for subsequent observation.
[0066] In this embodiment: multiple counting gears 4 are provided, the multiple counting gears 4 are coaxial and evenly arranged along the axial direction, and the multiple counting gears 4 are independently rotatably connected to the bracket 5; A transmission gear 43 is provided between any two adjacent counting gears 4, and multiple transmission gears 43 are arranged in a linear array. The transmission gear 43 and the bracket 5 are rotatably connected with the axis of the transmission gear 43 as the center. The teeth at both ends of the transmission gear 43 mesh with the corresponding two counting gears 4, and the number of teeth at both ends of the transmission gear 43 is different.
[0067] In this plan, such as Figure 2 , 11 As shown, multiple counting gears 4 are arranged coaxially, and each gear can rotate independently (e.g., 42 gears for numbers 0-9); a transmission gear 43 with different teeth at both ends is set between adjacent counting gears 4 (e.g., full teeth on the right end, number of teeth = 10; half teeth on the left end, number of teeth = 1, etc.). Figure 7 As shown, they are arranged in a linear array.
[0068] Each rotation of the right-side counting gear 4 (units digit) (36° × 10 teeth) drives the transmission gear 43 to rotate once via its full-tooth end; at this time, the left half-tooth of the transmission gear 43 engages with the left-side counting gear 4 (tens digit) once, pushing it to rotate 36° (1 tooth). It can be seen that it takes 10 triggers for the tens digit counting gear 4 to complete one full rotation, corresponding to 10 rotations of the units digit counting gear 4. The same principle applies to higher digits, forming a decimal counting system, further expanding the recording range of the total flow.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A flow monitoring device comprising a housing (1) in a hollow structure, a water inlet hole (11) and a water outlet hole (12) are respectively arranged on the top wall and the bottom wall of the housing (1), characterized in that: It also includes a receiving cylinder (2) disposed inside the housing (1) and a sealing disc (3) for covering and sealing the water inlet (11). The receiving tube (2) has an open end with a hollow structure. The closed end of the receiving tube (2) is rotatably connected to the inner wall of the shell (1) through a connector, and the rotation center line is perpendicular to the axis of the water inlet (11). The sealing disc (3) is movably connected to the inner top wall of the housing (1), and the water inlet (11) is located on the movement trajectory of the sealing disc (3) at one end inside the housing (1). A linkage component is provided between the sealing disc (3) and the receiving cylinder (2). It can present the following two states: State 1: The inside of the receiving tube (2) is empty. The open end of the receiving tube (2) is tilted upward and abuts against the top wall of the shell (1). The sealing plate (3) does not cover or block the water inlet hole (11). The receiving tube (2) is connected to the water inlet hole (11). State 2: The inside of the receiving tube (2) is filled with sewage, so the receiving tube (2) rotates on the shell (1), and the sealing plate (3) is driven by the linkage component to cover and block the water inlet hole (11).
2. The flow monitoring device according to claim 1, characterized in that: The connector includes a rotating shaft (21) and a counterweight (22). The two ends of the rotating shaft (21) are respectively inserted into the two side walls of the housing (1) and rotated together. The closed end of the receiving cylinder (2) is fixedly connected to the middle of the rotating shaft (21), and the open end extends radially away from the rotating shaft (21). The counterweight (22) is connected to the rotating shaft (21) and is located on the side of the rotating shaft (21) facing away from the receiving cylinder (2). The weight of the receiving cylinder (2) is less than the weight of the counterweight (22).
3. The flow monitoring device according to claim 2, characterized in that: A slide rod (23) is provided on the side of the rotating shaft (21) facing away from the receiving cylinder (2). One end of the slide rod (23) is fixedly connected to the outer circular surface of the rotating shaft (21), and the other end extends radially along the rotating shaft (21). The counterweight (22) is sleeved on the outside of the slide bar (23) and is slidably fitted.
4. The flow monitoring device according to claim 1, characterized in that: The sealing disc (3) is rotatably connected to the inner top wall of the shell (1), and the rotation center line is parallel to the axis of the water inlet (11); The top surface of the sealing disc (3) is tightly fitted to the inner top surface of the housing (1). A through hole (31) is provided on the edge of the top surface of the sealing disc (3), and the water inlet (11) is located on the rotation trajectory of the through hole (31) at one end inside the housing (1).
5. The flow monitoring device according to claim 4, characterized in that: The outer circular surface of the sealing disc (3) is provided with a spiral groove (32) extending along the axial direction of the sealing disc (3), and the linkage assembly includes a pressure ring (33) and a first spring (34). The pressure ring (33) is slidably connected to the inner top wall of the housing (1) along the water inlet hole (11). The pressure ring (33) is sleeved on the outside of the sealing disc (3). A slider (331) is provided in the annular gap between the pressure ring (33) and the sealing disc (3). One end of the slider (331) is fixedly connected to the inner circular surface of the pressure ring (33), and the other end is inserted into the spiral groove (32) and slidably engaged with the spiral groove (32). One end of the first spring (34) abuts against the inner top surface of the housing (1), and the other end abuts against the top surface of the pressure ring (33). In the naturally extended state, the through hole (31) and the water inlet hole (11) are misaligned and blocked.
6. A flow recording device, comprising the flow monitoring device according to any one of claims 2-5, characterized in that: It also includes a counting gear (4), a bracket (5) that is detachably fixed to the top surface of the housing (1), and a protective cover (6) covering the counting gear (4). The counting gear (4) and the bracket (5) are rotatably connected around the axis of the counting gear (4). A transmission assembly is provided between the counting gear (4) and the rotating shaft (21). When the rotating shaft (21) rotates, it drives the counting gear (4) to rotate in a single direction through the transmission assembly. The protective cover (6) has an observation hole (61), and only one tooth of the counting gear (4) can be observed through the observation hole (61).
7. The flow recording device according to claim 6, characterized in that: The counting gear (4) has grooves (41) in the middle of multiple teeth, and numbers (42) are engraved in the grooves (41). The numbers (42) in the multiple grooves (41) increase in the circumferential direction of the counting gear (4).
8. The flow recording device according to claim 6, characterized in that: The transmission assembly includes an internal tooth ratchet (71) fixedly connected to one end of the counting gear (4), a rotating rod (72) coaxial with the internal tooth ratchet (71), and a wedge block (73) adapted to the tooth groove in the internal tooth ratchet (71). The middle part of the rotating rod (72) is rotatably connected to the bracket (5) with the axis of the rotating rod (72) as the center. One end of the rotating rod (72) is inserted into the internal tooth ratchet (71), and the other end is connected to the rotating shaft (21) for transmission. The wedge block (73) and the rotating rod (72) are slidably connected at one end in the internal ratchet (71) along the radial direction of the rotating rod (72). A second spring (74) is provided between the wedge block (73) and the rotating rod (72). One end of the second spring (74) abuts against the wedge block (73), and the other end abuts against the rotating rod (72). In the naturally extended state of the second spring (74), the tip of the wedge block (73) is inserted into the tooth groove of the internal ratchet (71).
9. The flow recording device according to claim 8, characterized in that: The first bevel gear (721) is coaxially fixedly connected to one end of the rotating rod (72) facing away from the internal tooth ratchet (71), and the second bevel gear (211) is coaxially fixedly connected to one end of the rotating shaft (21). A transmission shaft (75) is provided between the rotating rod (72) and the rotating shaft (21). One end of the transmission shaft (75) extends out of the housing (1) through the top wall of the housing (1), and the middle part of the transmission shaft (75) is rotatably engaged with the housing (1). The transmission shaft (75) has two third bevel gears (751) at both ends that mesh with the first bevel gear (721) and the second bevel gear (211), respectively.
10. The flow recording device according to claim 6, characterized in that: The counting gear (4) is provided in multiple ways. The multiple counting gears (4) are coaxial and evenly arranged along the axial direction. The multiple counting gears (4) are independently rotatably connected to the bracket (5). A transmission gear (43) is provided between any two adjacent counting gears (4), and multiple transmission gears (43) are arranged in a linear array; The transmission gear (43) and the bracket (5) are rotatably connected with the axis of the transmission gear (43) as the center. The teeth at both ends of the transmission gear (43) mesh with the corresponding two counting gears (4), and the number of teeth at both ends of the transmission gear (43) is different.