Self-calibrating anti-clogging structure of an intelligent fluid flowmeter

Abstract

This invention relates to the field of flow meter technology, specifically to an intelligent fluid flow meter with a self-calibrating anti-clogging structure. It includes a flow channel body, a filter assembly, a debris removal assembly, and an intelligent flow metering core. The flow channel body has a fluid channel coaxially extending through it. A debris removal port is provided on the side of the flow channel body, extending into the fluid channel and communicating with the interior of the fluid channel. This port is used to discharge a mixture of impurities and flushing fluid. Through a mechanical linkage structure consisting of a flexible sealing bladder, a piston rod, and a locking pin, when impurities accumulate on the filter plate surface, causing an increase in pressure at the inlet, the fluid pressure automatically squeezes the flexible sealing bladder, pushing the piston rod upward and releasing the circumferential lock of the filter shaft. This allows for the identification of blockages and triggering of unblocking preparations without additional electronic control components or manual inspection. It can automatically calibrate the flow channel's flow state, preventing continuous accumulation of impurities from increasing flow resistance and causing measurement deviations.

Description

Technical Field

[0001] This invention relates to the field of flow meter technology, specifically to an intelligent fluid flow meter with a self-calibrating and anti-clogging structure. Background Technology

[0002] Flow meters are core detection devices used in industrial fluid transport systems for real-time measurement of fluid flow. They are widely used in water supply and drainage, chemical industry, metallurgy, municipal pipe networks and many other fields. Their measurement accuracy and operational stability directly affect production process control, trade settlement accuracy and pipeline system operating efficiency. In fluid transport conditions containing solid particles, solid impurities such as mud, metal fragments, and medium crystal particles carried in the fluid will enter the flow meter along with the fluid. On the one hand, solid impurities will continuously erode and wear down the metering sensing element of the flow meter, causing a decrease in the element's detection sensitivity and a significant reduction in its service life. On the other hand, impurities will gradually accumulate and block the inner wall of the flow channel and the detection area, changing the flow field distribution in the flow channel, resulting in continuous deviations in flow measurement data. In severe cases, the blockage may even cause complete blockage of the flow channel, leading to pipeline operation failure. Existing technologies typically employ an external filter device installed in the pipeline upstream of the flow meter to intercept solid impurities, thereby reducing their interference with the flow meter. However, this type of structure requires periodic shutdowns to disassemble the filter screen for manual cleaning, which is cumbersome and labor-intensive. Furthermore, the accumulation of impurities continuously increases the flow resistance in the pipeline, affecting the stability of fluid delivery. It is also impossible to automatically calibrate the flow path during operation, making it difficult to ensure that the flow meter maintains accurate measurement over a long period of time. Therefore, there is an urgent need for an intelligent fluid flow meter with a self-calibrating and anti-clogging structure to solve the above-mentioned technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent fluid flow meter with a self-calibrating and anti-clogging structure to solve the problems in the prior art where flow meters are easily clogged by fluids containing impurities, require disassembly and cleaning of impurities, require shutting down pipelines during the cleaning process which affects production, and impurities are prone to remain and interfere with measurement accuracy.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent fluid flow meter with a self-calibrating anti-clogging structure, comprising: The main body of the flow channel has a fluid flow channel coaxially extending through it, and a discharge port is provided on the side of the main body of the flow channel extending into the fluid flow channel; A filter assembly is disposed inside the main body of the flow channel and is used to filter solid impurities in the fluid. The filter assembly is located near the liquid inlet end of the main body of the flow channel and is rotatable radially along the main body of the flow channel to backwash away the intercepted solid impurities. The impurity removal component is located inside the main body of the flow channel and extends to the outside of the main body of the flow channel. The impurity removal component is rotatable along the radial direction of the main body of the flow channel. By rotating the impurity removal component, the washing material can be discharged through the impurity removal port during the backwashing process of the filter component.

[0005] Preferably, the filter assembly includes a filter shaft that is rotatably mounted on the flow channel body radially along the flow channel body. The filter shaft passes through the interior and exterior of the flow channel body. A filter frame that is adapted to the specifications of the inner wall of the flow channel body is fixedly provided at one end of the filter shaft near the interior of the flow channel body. A filter plate is provided on the filter frame. The filter plate is a circular metal plate with multiple filter holes on its surface and is coaxially arranged with the filter frame. The filter plate is movable along the axial direction of the filter frame.

[0006] Preferably, the filter frame has an integrally formed baffle on one side near the impurity removal component, and a flexible sealing bladder is fixedly formed on one side of the baffle near the filter plate. The flexible sealing bladder is coaxial with the filter frame and contacts the side of the filter plate. A connecting joint is integrally formed at the bottom of the filter shaft, and a connecting hole is formed at the top of the flexible sealing bladder. The inner wall of the connecting hole is fixedly connected to the outer peripheral surface of the connecting joint.

[0007] Preferably, a piston rod is slidably and coaxially disposed inside the filter shaft, an end cap is fixedly disposed on the top of the filter shaft, and a return spring is coaxially disposed inside the filter shaft, the return spring being fixedly installed between the bottom of the end cap and the top of the piston rod.

[0008] Preferably, a locking pin is fixedly provided on the outer circumferential surface of the piston rod, the number of the locking pins is at least two, and they are arranged in a circumferential array along the outer circumferential surface of the piston rod. A guide groove is provided on the outer circumferential surface of the filter shaft along its radial direction. The locking pin slides through the interior of the guide groove, and the guide groove extends along the axial direction of the piston rod.

[0009] Preferably, the filter assembly further includes a positioning seat fixedly disposed on the outer peripheral surface of the flow channel body. The positioning seat is coaxial with the filter shaft and located outside the filter shaft. The top of the positioning seat is provided with a locking groove corresponding to the position and number of locking pins. Initially, the locking pins are engaged inside the locking grooves to form a circumferential locking structure for the filter shaft.

[0010] Preferably, a rotating sleeve is coaxially and rotatably provided around the positioning seat. A positioning slot is provided on the outer circumferential surface of the rotating sleeve, corresponding to the number and position of the locking pins. Initially, the locking pins pass through the locking slots and extend into the positioning slots to form a circumferential locking structure for the rotating sleeve. A clearance slot is provided at the top of the positioning slot. The width of the clearance slot is greater than the width of the positioning slot, and the height of the clearance slot is greater than the height of the locking pins.

[0011] Preferably, a stop block is fixedly provided on the side of the outer circumference of the rotating sleeve near the impurity removal component, and a handle is fixedly provided on the top of the locking pin.

[0012] Preferably, the impurity removal assembly includes an impurity removal shaft that is rotatably arranged radially along the main body of the flow channel. The impurity removal shaft penetrates both the interior and exterior of the main body of the flow channel. An impurity removal valve ball is fixedly provided at one end of the impurity removal shaft near the interior of the main body of the flow channel, and an operating end seat is fixedly provided at the other end of the impurity removal shaft away from the impurity removal valve ball. Initially, the side of the operating end seat away from the impurity removal shaft abuts against the side of the stop block, forming a circumferential locking structure for the impurity removal shaft. A flow cavity is opened through the interior of the impurity removal valve ball along the axial direction of the main body of the flow channel, and an impurity removal opening is opened through the outer circumferential surface of the impurity removal valve ball radially into the flow cavity. Initially, the impurity removal opening is located on the side of the impurity removal valve ball away from the impurity removal port.

[0013] Preferably, an intelligent flow metering core is fixedly provided on the main body of the flow channel. The intelligent flow metering core is close to the liquid outlet end of the main body of the flow channel and extends into the interior of the main body of the flow channel. The intelligent flow metering core is used for fluid metering inside the main body of the flow channel.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the mechanical linkage structure consisting of a flexible sealing bladder, piston rod, and locking pin, when impurities accumulate on the filter plate surface, causing the pressure at the inlet end to rise, the fluid pressure can automatically squeeze the flexible sealing bladder, push the piston rod upward, and release the circumferential lock of the filter shaft. The blockage status can be identified and the blockage preparation can be triggered without additional electrical control components and manual inspection. The flow status of the flow channel can be automatically calibrated to avoid the continuous accumulation of impurities causing increased flow resistance and deviation in measurement results.

[0015] 2. The filter assembly can rotate 180° around the filter shaft, turning the filter plate surface, which originally intercepted impurities, towards the liquid outlet side. Combined with the reverse flushing fluid, solid impurities adhering to the filter holes and plate surface can be washed off. There is no need to disassemble the flow meter or remove the filter screen for manual cleaning, which greatly reduces the difficulty of operation and maintenance and labor costs, and solves the pain point of traditional filter structures requiring disassembly for cleaning.

[0016] 3. The impurity discharge valve ball and the impurity discharge port cooperate to form an independent impurity discharge passage. After the impurities generated by backwashing are mixed with the flushing liquid, they are directly discharged from the outside of the device through the impurity discharge opening and flow cavity, and will not flow through the downstream intelligent flow metering core area. This avoids the wear and blockage of the metering and detection components by solid impurities, and also eliminates the interference of residual impurities on the flow field, ensuring the long-term stable metering accuracy of the flow meter, while extending the service life of the metering core components.

[0017] 4. Under normal filtration conditions, the locking pin simultaneously engages with the locking groove and the positioning groove, locking the filter shaft and the rotating sleeve in a synchronized manner. The impurity discharge shaft is limited by the stop block, which can resist fluid impact and prevent the rotating parts from deflecting, ensuring the stability of the flow channel. During the unblocking operation, the unlocking is done in steps and the actions are performed in sequence. The operation logic is clear and the state switching is highly controllable, which can effectively avoid flow channel abnormalities caused by misoperation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the main body of the flow channel in this invention; Figure 3 In this invention Figure 2 A partially enlarged structural diagram; Figure 4 This is a schematic diagram of the main structure of the flow channel in this invention; Figure 5 In this invention Figure 4 A partially enlarged structural diagram; Figure 6 This is a schematic diagram of the filter plate structure in this invention; Figure 7 In this invention Figure 6 A schematic diagram of the side section structure; Figure 8 In this invention Figure 7 A partially enlarged structural diagram; Figure 9 This is a cross-sectional view of the discharge valve ball in this invention.

[0019] In the diagram: 100, main body of the flow channel; 101, fluid flow channel; 102, discharge port; 200, filter assembly; 201, filter shaft; 202, filter frame; 203, filter plate; 205, baffle; 206, flexible sealing bladder; 207, connecting joint; 208, connecting hole; 209, piston rod; 210, end cap; 211, return spring; 212, locking pin; 213, guide groove; 214, positioning seat; 215, locking groove; 216, rotating sleeve; 217, positioning slot; 218, clearance groove; 219, stop block; 220, handle; 300, discharge assembly; 301, discharge shaft; 302, discharge valve ball; 303, operating end seat; 304, flow cavity; 305, discharge opening; 400, intelligent flow metering core. Detailed Implementation

[0020] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The technical solution provided by this invention specifically includes the following embodiments: See Figures 1-9 As shown, a self-calibrating anti-clogging intelligent fluid flow meter includes a flow channel body 100, a filter assembly 200, a debris removal assembly 300, and an intelligent flow metering core 400. The flow channel body 100 has a fluid flow channel 101 coaxially extending through it. A debris removal port 102 is provided on the side of the flow channel body 100 extending into the fluid flow channel 101. The debris removal port 102 is connected to the inside of the fluid flow channel 101 and is used to discharge a mixture of impurities and flushing fluid. The flow channel body 100 has a tubular structure, with the inlet end and outlet end respectively connected to external fluid delivery pipelines. After the fluid flows into the fluid flow channel 101 from the inlet end, it passes through the filter assembly 200, the debris removal assembly 300, and the intelligent flow metering core 400 in sequence, and finally flows out from the outlet end.

[0022] For further details, please refer to [link / reference]. Figure 3 and Figure 6 As shown: The filter assembly 200 is located inside the flow channel body 100 and near the inlet end of the flow channel body 100. It is used to intercept solid impurities in the fluid. The filter assembly 200 is rotatable radially along the flow channel body 100. After rotation, the intercepted solid impurities can be backwashed and cleaned. The filter assembly 200 includes a filter shaft 201, a filter frame 202, and a filter plate 203. The filter shaft 201 is rotatably mounted on the flow channel body 100 radially. The filter shaft 201 passes through the inside and outside of the flow channel body 100. The filter shaft 201 is located near the inlet end of the flow channel body 100. A filter frame 202, which is adapted to the specifications of the inner wall of the flow channel body 100, is fixedly installed at one end of the flow channel body 100. A filter plate 203 is provided on the filter frame 202. The filter plate 203 is a circular metal plate with multiple filter holes on its surface and is coaxially arranged with the filter frame 202. The filter plate 203 is movable along the axial direction of the filter frame 202. The outer diameter of the filter frame 202 is adapted to the inner diameter of the fluid flow channel 101. Under normal filtration conditions, the plate surface of the filter plate 203 is perpendicular to the fluid flow direction. When the fluid passes through the filter holes, solid impurities are intercepted on the side surface of the filter plate 203 facing the liquid inlet end.

[0023] For further details, please refer to [link / reference]. Figure 7 and Figure 8As shown: A baffle 205 is integrally provided on one side of the filter frame 202 near the impurity removal component 300. A flexible sealing bladder 206 is fixedly provided on one side of the baffle 205 near the filter plate 203. The flexible sealing bladder 206 is coaxial with the filter frame 202 and contacts the side of the filter plate 203. A connecting joint 207 is integrally provided at the bottom of the filter shaft 201. A connecting hole 208 is provided at the top of the flexible sealing bladder 206. The inner wall of the connecting hole 208 is fixedly connected to the outer peripheral surface of the connecting joint 207, so that the internal cavity of the flexible sealing bladder 206 is connected to the internal cavity of the filter shaft 201. When impurities accumulate on the surface of the filter plate 203, causing the pressure at the inlet end to increase, the fluid pressure pushes the filter plate 203 to move towards the baffle 205, squeezing the flexible sealing bladder 206 to increase its internal pressure. The pressure is transmitted to the internal cavity of the filter shaft 201 through the connecting joint 207.

[0024] For further details, please refer to [link / reference]. Figure 5 and Figure 8 As shown: A piston rod 209 is coaxially and slidably provided inside the filter shaft 201. An end cap 210 is fixedly provided on the top of the filter shaft 201. A return spring 211 is coaxially provided inside the filter shaft 201. The return spring 211 is fixedly installed between the bottom of the end cap 210 and the top of the piston rod 209. A locking pin 212 is fixedly provided on the outer circumferential surface of the piston rod 209. There are at least two locking pins 212, which are arranged in a circumferential array along the outer circumferential surface of the piston rod 209. The outer circumferential surface of the filter shaft 201 is arranged along its diameter. A guide groove 213 is provided, and a locking pin 212 slides through the inside of the guide groove 213. The guide groove 213 extends axially along the piston rod 209. After the pressure inside the filter shaft 201 increases, it pushes the piston rod 209 to move upward axially, compressing the return spring 211 to store force. The locking pin 212 slides upward along the guide groove 213 synchronously with the piston rod 209. The guide groove 213 restricts the sliding stroke of the locking pin 212, while ensuring that the locking pin 212 and the filter shaft 201 rotate synchronously in the circumferential direction.

[0025] For further details, please refer to [link / reference]. Figure 5 As shown: The filter assembly 200 also includes a positioning seat 214 fixedly disposed on the outer peripheral surface of the flow channel body 100. The positioning seat 214 is coaxial with the filter shaft 201 and is located on the periphery of the filter shaft 201. The top of the positioning seat 214 is provided with a locking groove 215 corresponding to the position and number of locking pins 212. Initially, the locking pins 212 are engaged in the locking groove 215, forming a circumferential locking structure for the filter shaft 201. In the initial state, the elastic force of the return spring 211 pushes the piston rod 209 downward, so that the locking pins 212 are embedded in the locking groove 215, and the filter shaft 201 cannot rotate circumferentially, ensuring that the position of the filter plate 203 is stable in the filtering state. When the piston rod 209 moves upward and drives the locking pins 212 to disengage from the locking groove 215, the filter shaft 201 gains circumferential rotational freedom.

[0026] For further details, please refer to [link / reference]. Figure 3 As shown: A rotating sleeve 216 is rotatably provided coaxially around the positioning base 214. The top of the rotating sleeve 216 has a positioning slot 217 corresponding to the number and position of the locking pins 212. Initially, the locking pins 212 pass through the locking groove 215 and extend into the positioning slot 217, forming a circumferential locking structure for the rotating sleeve 216. The top of the rotating sleeve 216 has a clearance groove 218. The width of the clearance groove 218 is greater than the width of the positioning slot 217, and the height of the clearance groove 218 is greater than the height of the locking pins 212. In the initial state, the locking pins 212 are simultaneously engaged in the locking groove 215 and the positioning slot 217, and the rotating sleeve 216 and the filter shaft 201 are locked synchronously. When the locking pins 212 move upward into the clearance groove 218, the locking pins 212 are released from the restriction of the positioning slot 217, and the rotating sleeve 216 gains circumferential rotational freedom.

[0027] For further details, please refer to [link / reference]. Figure 3 As shown: A stop 219 is fixedly provided on the outer circumference of the rotating sleeve 216 near the impurity removal component 300. A handle 220 is fixedly provided on the top of the locking pin 212. The handle 220 is used to manually drive the piston rod 209 and the locking pin 212 to move upward along the axial direction. In the initial state, the stop 219 is locked with the rotating sleeve 216. The side of the stop 219 abuts against the impurity removal component 300, restricting the circumferential rotation of the impurity removal component 300. When the rotating sleeve 216 rotates, it can drive the stop 219 to rotate synchronously, releasing the restriction on the impurity removal component 300.

[0028] For further details, please refer to [link / reference]. Figure 2 , Figure 9As shown: The impurity removal component 300 is located inside the flow channel body 100 and extends to the outside of the flow channel body 100. The impurity removal component 300 is rotatable radially along the flow channel body 100. By rotating the impurity removal component 300, the washing material can be discharged through the impurity removal port 102 during the backwashing process of the filter component 200. The impurity removal component 300 includes an impurity removal shaft 301, an impurity removal valve ball 302, an operating end seat 303, a flow cavity 304, and an impurity removal opening 305. The impurity removal shaft 301 is rotatably mounted on the flow channel body 100 radially along the flow channel body 100. The impurity removal shaft 301 passes through the inside and outside of the flow channel body 100. The impurity removal valve ball 302 is fixedly installed at one end of the impurity removal shaft 301 near the inside of the flow channel body 100, and the operating end seat 303 is fixedly installed at the other end of the impurity removal shaft 301 away from the impurity removal valve ball 302. Initially, the operating end seat 303 is away from the impurity removal shaft 301. One side of the shaft 301 abuts against the side of the stop block 219, forming a circumferential locking structure for the impurity discharge shaft 301. The impurity discharge valve ball 302 has a flow cavity 304 that extends through the flow channel body 100 axially. The outer circumferential surface of the impurity discharge valve ball 302 has an impurity discharge opening 305 that extends through the flow cavity 304 radially into the flow channel body 100. Initially, the impurity discharge opening 305 is located on the side of the impurity discharge valve ball 302 away from the impurity discharge port 102. Under normal flow conditions, the fluid flows continuously through the flow cavity 304 axially, and the impurity discharge opening 305 is closed by the flow channel body 100. When the impurity discharge shaft 301 drives the impurity discharge valve ball 302 to rotate 90°, the impurity discharge opening 305 is coaxially aligned with the impurity discharge port 102, and the interior of the flow cavity 304 is connected to the impurity discharge port 102. The impurity mixture generated during rinsing can be discharged from the impurity discharge port 102 through the impurity discharge opening 305 and the flow cavity 304.

[0029] For further details, please refer to [link / reference]. Figure 1 As shown: The intelligent flow metering core 400 is fixedly mounted on the flow channel body 100. The intelligent flow metering core 400 is located near the liquid outlet end of the flow channel body 100 and extends into the interior of the flow channel body 100. The intelligent flow metering core 400 is used to measure the flow rate of the fluid inside the flow channel body 100. Specifically, the clean fluid filtered by the filter assembly 200 flows through the detection area of ​​the intelligent flow metering core 400. The intelligent flow metering core 400 detects the fluid flow rate data in real time to achieve accurate measurement. It can also self-calibrate; the specific calibration principle is based on existing technology and will not be elaborated here.

[0030] Working principle: The flow channel body 100 is installed on the pipeline for conveying the fluid to be tested, so that the fluid enters from the inlet end of the flow channel body 100 and flows out from the outlet end. When it flows through the filter plate 203 of the filter assembly 200, solid impurities in the fluid are intercepted and filtered by the filter plate 203, preventing solid impurities from entering the downstream metering component intelligent flow metering core 400 and causing blockage or wear, thus ensuring stable metering accuracy. The filtered fluid flows through the impurity discharge opening 305 to the intelligent flow metering core 400 and finally exits from the outlet end of the flow channel body 100. When the impurities intercepted on the surface of the filter plate 203 accumulate to a certain extent and need to be cleaned, the flow rate of the filter plate 203 decreases, and the pressure at the inlet end of the flow channel body 100 increases, pushing the filter plate 203 to move axially along the filter frame 202 towards the baffle 205 and squeezing the flexible sealing bladder 206. The internal pressure of the flexible sealing bladder 206 increases and is transmitted to the inner cavity of the filter shaft 201 through the connecting hole 208 and the connecting joint 207, pushing the piston rod 209 along the filter shaft 201. 01. As the piston rod 209 moves upward, the return spring 211 is compressed and stores energy. During this upward movement, the locking pin 212 moves synchronously until it disengages from the locking position of the locking groove 215, giving the filter shaft 201 rotational freedom. Simultaneously, the locking pin 212 moves from the positioning slot 217 into the relief groove 218, giving the previously circumferentially locked rotating sleeve 216 rotational freedom. At this point, rotating the rotating sleeve 216 causes the relief groove 218 to rotate as well, thus... The other side of the groove wall of the connecting hole 208 moves toward the filter frame 202, and the stop block 219 rotates together until the groove wall of the clearance groove 218 contacts the side of the locking pin 212. The stop block 219 completely releases the restriction on the operating end seat 303. At this time, the operating end seat 303 can be rotated to drive the discharge shaft 301 and the discharge valve ball 302 to rotate 90°, so that the discharge opening 305 rotates toward the filter assembly 200, and the discharge opening of the discharge valve ball 302 and the discharge port 102 remain coaxial. Next, the rotating sleeve 216 continues to rotate. The contact between the wall of the clearance groove 218 and the side of the locking pin 212 causes the piston rod 209, filter shaft 201, filter frame 202, and filter plate 203 to rotate 180° together. This causes the surface of the filter plate 203, which was originally facing the inlet end and covered with a large amount of solid impurities, to rotate towards the outlet end. At this time, high-pressure flushing fluid is introduced in reverse. After entering the main body 100 of the flow channel, the high-pressure fluid can reverse-flush the surface of the filter plate 203, washing off the solid impurities adhering to the filter plate 203. The washed-off impurities, along with the flushing fluid, enter the flow cavity 304 through the impurity discharge opening 305, and finally pass through the impurity discharge port 1. 02. The discharge is discharged outside the device, completing the automatic unclogging operation. Maintenance can be completed without disassembling the device, which greatly reduces the difficulty of anti-clogging maintenance. At the same time, solid impurities will not come into contact with the intelligent flow metering core 400, so they will not interfere with the detection accuracy of the metering component and will also avoid wear of the metering component by impurities, effectively extending the overall service life of the device. During this process, the return spring 211 releases its rebound force to push the locking pin 212 to re-engage into the locking groove 215, providing circumferential locking to the filter shaft 201, so that the filter plate 203 will not rotate during the backwashing process, ensuring the stable operation of the backwashing operation. After the blockage is cleared, the reverse rotation of the operating end seat 303 drives the discharge valve ball 302 to reset, causing the discharge opening 305 to rotate again and deviate from the discharge port 102, closing the communication path between the discharge port 102 and the flow cavity 304. Pulling the handle 220 upwards drives the locking pin 212 to move upwards along the guide groove 213, so that the locking pin 212 is completely retracted into the relief groove 218. At this time, the reverse rotation of the rotating sleeve 216 can reset it. After the rotating sleeve 216 is reset, the handle 220 is released, and the reset spring 211 pushes the locking pin 212 downwards to reset it, re-engaging it into the locking groove 215 and the positioning groove 217, forming a circumferential lock on the filter shaft 201 and the rotating sleeve 216 again. At the same time, after the stop block 219 is reset, it abuts against the locking operating end seat 303 again, and the device can resume normal fluid filtration and metering operations. The entire blockage clearing and calibration process can be completed with only a few rotation operations, without the need for manual disassembly and cleaning, further reducing the cost of manual operation and maintenance.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A smart fluid flow meter with a self-calibrating anti-clogging structure, comprising: The main body of the flow channel (100), the filter assembly (200) and the impurity removal assembly (300) are characterized in that: the main body of the flow channel (100) has a fluid flow channel (101) coaxially through it, and an impurity removal port (102) is provided through the side of the main body of the flow channel (100) into the fluid flow channel (101). The filter assembly (200) is located inside the flow channel body (100) and is used to filter solid impurities in the fluid. The filter assembly (200) is close to the liquid inlet end of the flow channel body (100). The filter assembly (200) is rotatable radially along the flow channel body (100) to backwash away the intercepted solid impurities. The impurity removal component (300) is located inside the flow channel body (100) and extends to the outside of the flow channel body (100). The impurity removal component (300) is rotatable radially along the flow channel body (100). By rotating the impurity removal component (300), the flushing material can be discharged through the impurity removal port (102) during the backwashing process of the filter component (200).

2. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 1, characterized in that: The filter assembly (200) includes a filter shaft (201) that is rotatably mounted on the flow channel body (100) radially along the flow channel body (100). The filter shaft (201) passes through the interior and exterior of the flow channel body (100). A filter frame (202) that is adapted to the specifications of the inner wall of the flow channel body (100) is fixedly provided at one end of the filter shaft (201) near the interior of the flow channel body (100). A filter plate (203) is provided on the filter frame (202). The filter plate (203) is a circular metal plate with multiple filter holes on its surface and is coaxially arranged with the filter frame (202). The filter plate (203) is axially movable along the filter frame (202).

3. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 2, characterized in that: The filter frame (202) has an integrally provided baffle (205) on one side near the impurity removal component (300). The baffle (205) has a fixedly provided flexible sealing bladder (206) on one side near the filter plate (203). The flexible sealing bladder (206) is coaxial with the filter frame (202) and contacts the side of the filter plate (203). The bottom of the filter shaft (201) has an integrally provided connecting joint (207). The top of the flexible sealing bladder (206) has a connecting hole (208). The inner wall of the connecting hole (208) is fixedly connected to the outer peripheral surface of the connecting joint (207).

4. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 3, characterized in that: The filter shaft (201) is coaxially and slidably provided with a piston rod (209) inside. The filter shaft (201) is fixedly provided with an end cap (210) on the top. The filter shaft (201) is coaxially provided with a return spring (211) inside. The return spring (211) is fixedly installed between the bottom of the end cap (210) and the top of the piston rod (209).

5. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 4, characterized in that: A locking pin (212) is fixedly provided on the outer circumferential surface of the piston rod (209). There are at least two locking pins (212), which are arranged in a circumferential array along the outer circumferential surface of the piston rod (209). A guide groove (213) is provided on the outer circumferential surface of the filter shaft (201) along its radial direction. The locking pin (212) slides through the interior of the guide groove (213), and the guide groove (213) extends axially along the piston rod (209).

6. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 5, characterized in that: The filter assembly (200) also includes a positioning seat (214) fixedly disposed on the outer peripheral surface of the flow channel body (100). The positioning seat (214) is coaxial with the filter shaft (201) and located on the periphery of the filter shaft (201). The top of the positioning seat (214) is provided with a locking groove (215) corresponding to the position and number of locking pins (212). Initially, the locking pins (212) are engaged inside the locking grooves (215) to form a circumferential locking structure for the filter shaft (201).

7. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 6, characterized in that: The positioning seat (214) is rotatably provided with a rotating sleeve (216) on its outer periphery. The outer circumferential surface of the rotating sleeve (216) is provided with a positioning slot (217) corresponding to the number and position of the locking pins (212). Initially, the locking pins (212) pass through the locking groove (215) and extend into the positioning slot (217) to form a circumferential locking structure for the rotating sleeve (216). The top of the positioning slot (217) is provided with a clearance groove (218). The width of the clearance groove (218) is greater than the width of the positioning slot (217), and the height of the clearance groove (218) is greater than the height of the locking pins (212).

8. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 7, characterized in that: A stop block (219) is fixedly provided on the outer peripheral surface of the rotating sleeve (216) near the impurity removal component (300), and a handle (220) is fixedly provided on the top of the locking pin (212).

9. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 8, characterized in that: The impurity removal assembly (300) includes an impurity removal shaft (301) that is radially rotatable along the main body of the flow channel (100). The impurity removal shaft (301) penetrates both the interior and exterior of the main body of the flow channel (100). An impurity removal valve ball (302) is fixedly mounted at one end of the shaft (301) near the interior of the main body of the flow channel (100), and an operating end seat (303) is fixedly mounted at the other end of the shaft (301) away from the impurity removal valve ball (302). Initially, the operating end seat (303) is located away from the impurity removal shaft (301). One side of the 301) abuts against the side of the stop block (219) to form a circumferential locking structure for the discharge shaft (301). The discharge valve ball (302) has a flow cavity (304) axially extending through the flow channel body (100) inside. The discharge valve ball (302) has a discharge opening (305) radially extending through the flow cavity (304) from the outer circumference of the flow channel body (100). Initially, the discharge opening (305) is located on the side of the discharge valve ball (302) away from the discharge port (102).

10. The intelligent fluid flow meter with a self-calibrating anti-clogging structure according to claim 9, characterized in that: The flow channel body (100) is fixedly provided with an intelligent flow metering core (400). The intelligent flow metering core (400) is close to the liquid outlet end of the flow channel body (100) and extends into the interior of the flow channel body (100). The intelligent flow metering core (400) is used for fluid metering inside the flow channel body (100).

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