Flowmeter structure based on water conservancy gate

Abstract

The invention provides a flow meter structure based on a water conservancy gate, and belongs to the technical field of flow meters, the flow meter structure comprises a ring seat and a rotating ring, the ring seat comprises a base body and a cover body, and a plurality of pressing limiting units are arranged between the base body and the cover body; the rotating ring is located between the base body and the cover body, the radial end face, close to the cover body, of the rotating ring is provided with an inwards-inclined ring face and an outwards-inclined ring face, the rotating ring and the cover body are connected in a sealed and rotating mode to form a sealing area, and the pressing limiting units are located on the inner side of the sealing area and evenly distributed along the inwards-inclined ring face and the outwards-inclined ring face. According to the flow meter structure based on the water conservancy gate, the conical pressing head is matched with the inward inclined ring face and the outward inclined ring face, the rotating ring is limited, so that the rotating ring stably rotates, the conical pressing head is automatically fed in the abrasion process, the conical pressing head is cleaned through the combination of the scraping head, and the scraping opening cleans the inward inclined ring face and the outward inclined ring face; the stability and reliability of long-term operation of the whole structure are effectively improved, and the accuracy and reliability of long-term monitoring work are ensured.

Description

Technical Field

[0001] This invention relates to the field of flow meter technology, specifically to a flow meter structure based on a hydraulic gate. Background Technology

[0002] Hydraulic gates are crucial facilities for water regulation, widely used in reservoirs, irrigation areas, and rivers. To achieve scientific scheduling and refined management, real-time and accurate detection of the water flow through the gates is essential. Submersible flow measurement, a common method for flow monitoring, primarily involves immersing electromagnetic or ultrasonic sensors in the water to collect local flow velocity data, which is then combined with the cross-sectional area to calculate the total flow.

[0003] Currently, in submersible flow measurement, the detection head is fixed at a preset point. However, under conditions of uneven flow or large water level fluctuations, fixed-point measurement has significant errors, which directly reduces the accuracy and reliability of the detection results. To address this, some technologies adopt multi-point fixed or dynamic acquisition methods to improve the accuracy and reliability of the detection results. However, the former, multi-point fixed methods, have lower installation and maintenance convenience, which is not conducive to long-term monitoring. The latter, dynamic acquisition methods, mainly adopt horizontal moving dynamic acquisition, which can dynamically collect flow velocity data at multiple points in the transverse direction of the cross section during the movement. However, for waters with narrow cross sections and deep depths, this acquisition method has low representativeness of the longitudinal data, making it difficult to fully improve the accuracy and reliability of the detection results. Summary of the Invention

[0004] This invention provides a flow meter structure based on a hydraulic gate, including a lifting mechanism and a ring seat. The lifting mechanism controls the lifting and fixing of the ring seat. The ring seat includes a base and a cover, with several clamping and limiting units disposed between them. A rotating ring is located between the base and the cover. The radial end face of the rotating ring near the cover has an inwardly inclined ring surface and an outwardly inclined ring surface. The rotating ring is rotatably connected to the cover and forms a sealing area. The clamping and limiting units are located inside the sealing area and are evenly distributed along the inwardly inclined ring surface and the outwardly inclined ring surface. The clamping and limiting unit includes: a first wedge block, axially slidably mounted on the base; a second... A wedge block is radially slidably mounted on the cover and wedge-shapedly engaged with the corresponding first wedge block; an elastic element is located between the first wedge block and the base and provides automatic compensation clamping force; a conical clamping head is rotatably mounted on the second wedge block and abuts against the inward or outward inclined surface of the rotating ring; the cover block has gaps between itself and the inward and outward inclined surfaces, and is provided with several collection grooves 1 and 2. Collection groove 1 is provided with a scraper for cleaning the conical clamping head; collection groove 2 is provided with a scraper for cleaning the inward and outward inclined surfaces; and a detection head is detachably and fixedly mounted on the rotating ring.

[0005] In one possible implementation, the rotating ring also has an inwardly inclined ring surface and an outwardly inclined ring surface on its radial end face away from the cover. The clamping and limiting unit also includes several conical bearing joints, which are rotatably mounted on the base and evenly distributed along the circumference of the inwardly inclined ring surface and the outwardly inclined ring surface, and abut against the corresponding inwardly inclined ring surface or outwardly inclined ring surface.

[0006] In one possible implementation, the cover includes an inner ring cover and an outer ring cover. An annular platform is provided on the radial end face of the rotating ring. The annular platform is located between the inner ring cover and the outer ring cover, and a stepped sealing receiving area is provided on the annular platform. A sealing pressing area is provided on the inner ring cover and the outer ring cover to seal and connect with the sealing receiving area. The inner ring cover and the outer ring cover can be moved axially to press the sealing pressing area and the sealing receiving area together to form a sealing area.

[0007] In one possible implementation, an annular groove is formed on the substrate, and a toothed ring is fixedly installed on the side of the rotating ring near the substrate. The toothed ring is located in the annular groove, and a gear that meshes with the toothed ring is rotatably installed in the annular groove. A drive shaft is fixedly connected to the gear, and the rotating ring and the substrate are rotatably connected in a sealed manner, forming a sealing area at the opening of the annular groove.

[0008] In one possible implementation, the lifting mechanism includes a base, a lifting seat, and a control assembly. The lifting seat is vertically slidably mounted on the base. The control assembly is used to control the lifting seat to rise and fall and to fix it. The control assembly includes a drive screw, a fastening head, and a control component. The drive screw is used to drive the lifting seat to rise and fall and to fix the lifting seat in its current position using its self-locking property. The fastening head, in conjunction with the control component, is used to stably lock the lifting seat to the base.

[0009] In one possible implementation, the fastening head includes a limiting block and a clamping block. The clamping blocks are symmetrically distributed and horizontally slidably mounted on the lifting seat. The limiting blocks are vertically slidably mounted on the lifting seat and located between the symmetrically distributed clamping blocks, respectively engaging with the clamping blocks in a wedge shape. The control element controls the limiting blocks to slide and lock. During the stable locking process between the lifting seat and the base, the limiting blocks move down until all the symmetrical clamping blocks abut against the base.

[0010] In one possible implementation, the scraper head is fixedly mounted on the second wedge.

[0011] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: According to the flow meter structure based on the hydraulic gate provided by the embodiments of the present invention, the detection head dynamically collects flow velocity data at multiple points in the transverse and longitudinal directions in a circumferential motion, which effectively improves the representativeness of the collected data and the accuracy and reliability of the detection results. Combined with the conical clamping head and the inner and outer inclined ring surfaces on the rotating ring, the rotating ring is limited and rotates stably. The overall structure has a high resistance to debris jamming and clogging. The first wedge block and the second wedge block, combined with the elastic element, provide automatic compensation clamping force, so that the conical clamping head automatically feeds radially adaptively during the friction wear process, ensuring the stability of the rotating ring in the long-term rotational operation state, effectively improving the long-term operation stability of the overall structure, and thus improving the accuracy and reliability of long-term monitoring. In addition, the inner and outer inclined ring surfaces are all spaced with the cover, and a collection groove one is set to automatically clean the conical clamping head in cooperation with the scraper, and a collection groove two is set to automatically clean the inner and outer inclined ring surfaces in cooperation with the scraper, further ensuring the long-term operation stability and reliability of the overall structure. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a flow meter based on a hydraulic gate provided in an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the base and cover of a flow meter structure based on a hydraulic gate provided in an embodiment of the present invention.

[0014] Figure 3 This is a side view schematic diagram of the pressing and limiting unit of a flow meter structure based on a hydraulic gate provided in an embodiment of the present invention.

[0015] Figure 4 This is a schematic diagram of the inner and outer ring covers from a rear-view perspective of a flow meter structure based on a hydraulic gate, provided in an embodiment of the present invention.

[0016] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0017] Figure 6 This is a schematic diagram of the annular groove structure from the front view of a flow meter structure based on a hydraulic gate provided in an embodiment of the present invention.

[0018] Figure 7 This is a schematic diagram of the control component from the front view of a flow meter structure based on a hydraulic gate, provided in an embodiment of the present invention.

[0019] Figure 8This is a side view schematic diagram of the scraper and collection trough of a flow meter structure based on a hydraulic gate provided in an embodiment of the present invention.

[0020] In the diagram: 1. Base; 2. Lifting seat; 3. Ring seat; 31. Base body; 32. Cover body; 321. Inner ring cover; 322. Outer ring cover; 33. Pressing and limiting unit; 331. First wedge block; 332. Second wedge block; 333. Elastic element; 334. Conical pressing head; 335. Conical bearing joint; 34. Collection groove one; 35. Collection groove two; 36. Scraper head; 37. Scraper opening; 4. Rotating ring; 5. Detection head; 6. Control component; 61. Drive screw; 62. Fastening head; 621. Limiting block; 622. Pressing block; 63. Control component; 7. Annular platform; 8. Sealing bearing area; 9. Sealing pressing area; 10. Annular groove; 11. Gear ring; 12. Gear; 13. Drive shaft. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 7 A flow meter structure based on a hydraulic gate includes a lifting mechanism and a ring seat 3. The lifting mechanism includes a base 1, a lifting seat 2, and a control component 6. The lifting seat 2 is vertically slidably mounted on the base 1. The ring seat 3 is fixedly mounted on the lifting seat 2. A rotating ring 4 is rotatably mounted on the ring seat 3, and a waterproof motor is mounted on the ring seat 3. The waterproof motor drives the rotating ring 4 to rotate through a gear 12 and a gear ring 11. The control component 6 is used to control the lifting and lowering of the lifting seat 2 and to fix it in place, facilitating maintenance. A detection head 5 is detachably and fixedly mounted on the rotating ring 4. The detection head 5 dynamically collects water flow velocity data as the rotating ring 4 rotates. This is existing technology and will not be described in detail here. Figure 1As shown, the base 1 is a gantry-like structure and is fixedly installed in the selected monitoring water area. After installation, the control component 6 controls the lifting seat 2 to move down to the target depth and fix it. Then, the waterproof motor can be started to control the rotating ring 4 to rotate through the gear 12 and the gear ring 11. The detection head 5 rotates accordingly and collects water flow information in real time. During this process, the flow velocity distribution data at different positions in the transverse and longitudinal directions of the water area will be collected, which effectively improves the integrity and representativeness of the data collection. Moreover, the rotation of the rotating ring 4 and the ring seat 3 can effectively ensure the long-term stability of the movement trajectory of the detection head 5, improve the stability of the data collection process, and reduce the impact of water flow disturbance on the detection process of the detection head 5.

[0023] See Figure 1 , Figure 2 and Figure 3 The ring seat 3 includes a base 31 and a cover 32. A rotating ring 4 is located between the base 31 and the cover 32. The rotating ring 4 has an inwardly inclined annular surface and an outwardly inclined annular surface on its radial end face near the cover 32. The rotating ring 4 is rotatably connected to the cover 32 in a sealing manner, forming a sealing area. Several pressing and limiting units 33 are provided between the cover 32 and the base 31. The pressing and limiting units 33 are located inside the sealing area and are evenly distributed along the inwardly inclined annular surface and the outwardly inclined annular surface. Figure 2 and Figure 3 As shown, the cover 32 includes an inner ring cover 321 and an outer ring cover 322. The clamping and limiting unit 33 includes a first wedge 331, a second wedge 332, an elastic element 333, and a conical clamping head 334. The second wedges 332, which are evenly distributed along the inward-inclined annular surface, are radially slidably installed inside the inner ring cover 321. The second wedges 332, which are evenly distributed along the outward-inclined annular surface, are radially slidably installed inside the outer ring cover 322. The first wedge 331 and the corresponding second wedge 332 are wedge-shaped and axially slidably installed on the base 31. The elastic element 333 is located between the second wedge 332 and the base 31 and provides automatic compensation clamping force. The conical clamping head 334 is rotatably installed on the corresponding second wedge 332 and abuts against the inward or outward-inclined annular surface of the rotating ring 4. Figure 3As shown, the conical clamping heads 334 on the inner ring cover 321 abut against the inner ring surface on the front radial end face, and the conical clamping heads 334 on the outer ring cover 322 abut against the outer ring surface on the front radial end face. The conical clamping heads 334 on the inner ring cover 321 and outer ring cover 322 limit the rotational ring 4, restricting its radial and axial freedom, thus ensuring stable rotation. Furthermore, the rotational engagement of the conical clamping heads 334 with the rotational ring 4, combined with the fixed-point placement of the conical clamping heads 334, effectively improves the overall structure's resistance to obstruction and blockage, ensuring the stability of the rotational operation of the rotational ring 4. Secondly, during the continuous movement of the rotational ring 4, with wear and tear, the conical clamping heads 334 will automatically and adaptively feed radially under the cooperation of the elastic element 333 and the wedge-shaped cooperation of the first wedge block 331 and the second wedge block 332, ensuring the stability of the long-term rotational operation of the rotational ring 4 and improving the long-term stability of the overall structure. Figure 3 As shown, when the conical clamping head 334 and the rotating ring 4 become loose due to frictional wear, the elastic element 333 releases its elasticity, causing the first wedge block 331 to move axially. The second wedge block 332 then moves radially, causing the conical clamping head 334 to move radially and press against the rotating ring 4. This ensures the stable rotation of the rotating ring 4, thereby improving the long-term stability of the detection head 5 and guaranteeing the stability and reliability of the detection results. Furthermore, the rotating design of the conical clamping head 334 effectively reduces the frictional force during the rotation of the rotating ring 4, which helps reduce frictional wear and thus improves the long-term stability of the rotating ring 4.

[0024] See Figure 3 , Figure 4 , Figure 5 and Figure 8 Both the inner ring cover 321 and the outer ring cover 322 are provided with several collection grooves 34 and 35. The collection grooves 34 and 35 are evenly distributed circumferentially along the corresponding inner ring cover 321 and outer ring cover 322, and the collection grooves 34 and 35 on the inner ring cover 321 and outer ring cover 322 are alternately distributed circumferentially. The collection groove 34 is equipped with a scraper 36 for cleaning the conical pressing head 334. Figure 5 As shown, the scraper head 36 is fixedly installed on the second wedge block 332 and abuts against the corresponding conical clamping head 334. During the rotation of the conical clamping head 334, it automatically scrapes off the debris attached to it. The collection groove 35 is provided with a scraping nozzle 37 for cleaning the inward or outward inclined annular surface, such as... Figure 8 As shown, the scraper 37 is attached to the inward and outward inclined ring surfaces. As the rotating ring 4 rotates, the scraper 37 will automatically scrape off the debris attached to the inward and outward inclined ring surfaces, avoiding the accumulation of debris and blockage, and ensuring the stability of the rotating ring 4.

[0025] See Figure 3 and Figure 6 To further improve the long-term stability of the rotating ring 4 and the overall anti-clogging capability, a conical bearing joint 335 is provided between the rotating ring 4 and the base 31. The rear radial end face of the rotating ring 4 also has inclined inner and outer ring surfaces. Several conical bearing joints 335 are evenly distributed circumferentially along the inner and outer ring surfaces, respectively. Figure 3 and Figure 6 As shown, the conical bearing joint 335 is rotatably mounted on the base 31. Conical bearing joints 335, evenly distributed circumferentially along the inner ring surface, abut against the inner ring surface, and conical bearing joints 335, evenly distributed along the outer ring surface, abut against the outer ring surface. These two components work together to restrict the radial and axial freedom of the rotating ring 4, allowing it to rotate stably. Furthermore, the rotating ring 4 is in rotational contact with both the front conical clamping head 334 and the rear conical bearing joint 335, effectively reducing frictional loss during rotation and improving the long-term stability of the overall structure. In addition, during installation, the rotating ring 4 is simply inserted from the front and abuts against the conical bearing joint 335. 5. Then, insert the inner ring cover 321 and the outer ring cover 322 from the front and fix them together with the base body 31. Guide posts (not shown in the figure) are provided between the inner ring cover 321 and the outer ring cover 322 and the base body 31. During the installation process, the inner ring cover 321 and the outer ring cover 322 only need to move along the axial direction of the guide post to make the first wedge block 331 abut against the corresponding second wedge block 332. As the inner ring cover 321 and the outer ring cover 322 are fixedly connected to the base body 31, the elastic element 333 is automatically compressed and pressed. The corresponding conical pressing head 334 and conical bearing head 335 abut against the corresponding inner ring surface and outer ring surface, and the assembly work is completed quickly.

[0026] See Figure 3 An annular platform 7 is provided on the radial end face of the front side of the rotating ring 4. The annular platform 7 is coaxial with the rotating ring 4 and is located between the inner ring surface and the outer ring surface. A stepped sealing receiving area 8 is provided on the annular platform 7. A sealing pressing area 9 is provided on the inner ring cover 321 and the outer ring cover 322 to seal and connect with the sealing receiving area 8. The inner ring cover 321 and the outer ring cover 322 can be moved along the axial direction to press the sealing pressing area 9 and the sealing receiving area 8 to form a sealing area. This sealing area keeps the space between the cover body 32 and the base body 31 in a sealed state.

[0027] See Figure 3 and Figure 6An annular groove 10 is formed on the base 31. A gear ring 11 is fixedly installed on the rear side of the rotating ring 4 and located within the annular groove 10. A gear 12 is rotatably installed in the annular groove 10 and meshes with the rotating ring 4. A drive shaft 13 is fixedly connected to the gear 12. The drive shaft 13 is rotatably and sealedly inserted into the base 31 and connected to a waterproof motor. The rotating ring 4 is rotatably and sealedly connected to the base 31, forming a sealing area at the opening of the annular groove 10. The sealing structure of this sealing area and the aforementioned sealing area both adopt existing rotary sealing technology with adaptive compensation function (such as packing seal). The sealing area further... The sealing of the environment inside the annular groove 10 is ensured, and the stability of the rotation of the rotating ring 4 driven by the meshing of the gear 12 and the gear ring 11 is improved. The sealing areas between the inner ring cover 321 and the annular platform 7 and between the outer ring cover 322 and the front annular platform 7 are primary sealing areas, which prevent foreign objects from entering the area between the cover 32 and the base 31. The sealing area between the rotating ring 4 and the base 31 is a secondary sealing area, which prevents foreign objects from entering the annular groove 10, thereby improving the stability of the working environment of the gear ring 11 and the gear 12. Overall, this effectively improves the anti-clogging ability and long-term operational stability of the present invention.

[0028] See Figure 1 and Figure 7 The control component 6 includes a drive screw 61, which is rotatably connected to the lifting seat 2 and threadedly connected to the base 1, such as... Figure 1 As shown, the drive screw 61 is installed at the top center of the base 1 and is rotatably connected to the lifting seat 2. The lifting seat 2 moves up and down by rotating the drive screw 61 in the forward or reverse direction. When the drive screw 61 rotates in the forward direction, the lifting seat 2 moves down to the target depth position and then stops rotating. At this time, the self-locking function of the thread transmission system of the drive screw 61 keeps the lifting seat 2 in the current position and in a preliminary fixed state.

[0029] See Figure 1 and Figure 7 To further enhance the stability of the lifting seat 2's position, the control component 6 is equipped with a fastening head 62 and a control element 63. The fastening head 62 is respectively located at the left and right ends of the lifting seat 2, used to achieve mechanical locking between the lifting seat 2 and the base 1. Figure 7 As shown, the fastening head 62 includes a limiting block 621 and a clamping block 622. The clamping blocks 622 are symmetrically distributed left and right and are horizontally slidably mounted on the lifting seat 2. The limiting block 621 is vertically slidably mounted on the lifting seat 2 and is located between the symmetrically distributed clamping blocks 622, and is wedge-shapedly engaged with each clamping block 622. The control component 63 is a rod-shaped structure that is rotatably connected to the lifting seat 2 and threadedly connected to the limiting block 621. Rotating the control component 63 can control the limiting block 621 to move up and down and can lock it in the current position in real time. Figure 7As shown, during the up-and-down movement of the lifting seat 2, the limiting block 621 moves upward and the pressing block 622 is in a non-pressing state. When the lifting seat 2 stops moving, the control component 63 controls the limiting block 621 to move downward, so that the pressing block 622 presses against the limiting block 621 and the base 1, thereby locking the base 1 and the lifting seat 2 together stably and improving the stability of the overall structure.

[0030] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A flow meter structure based on a hydraulic gate, characterized in that: include: The lifting mechanism and the ring seat are used to control the lifting and fixing of the ring seat. The ring seat includes a base and a cover, and several clamping and limiting units are provided between the two. A rotating ring is located between the base and the cover. The radial end face of the rotating ring near the cover is provided with an inclined ring surface and an outclined ring surface. The rotating ring is rotatably connected to the cover and forms a sealing area. The clamping and limiting unit is located inside the sealing area and is evenly distributed along the inward and outward inclined annular surfaces, and the clamping and limiting unit includes: The first wedge is axially slidably mounted on the base. The second wedge is radially slidably mounted on the cover and engages with the corresponding first wedge in a wedge shape. An elastic element is located between the first wedge and the base and provides automatically compensated clamping force; A conical clamping head is rotatably mounted on the second wedge block and abuts against the inner or outer inclined ring surface of the rotating ring; The cover is spaced apart from the inward and outward ring surfaces, and has several collection grooves 1 and 2. Collection groove 1 is provided with a scraper for cleaning the conical pressing head; collection groove 2 is provided with a scraper for cleaning the inward and outward ring surfaces. The detection head is detachably and fixedly mounted on the rotating ring.

2. The flow meter structure based on a hydraulic gate according to claim 1, characterized in that: The rotating ring also has an inward-inclined ring surface and an outward-inclined ring surface on its radial end face away from the cover. The clamping and limiting unit also includes several conical bearing joints. The several conical bearing joints are rotatably installed on the base and are evenly distributed along the circumference of the inward-inclined ring surface and the outward-inclined ring surface and abut against the corresponding inward-inclined ring surface or outward-inclined ring surface.

3. The flow meter structure based on a hydraulic gate according to claim 1, characterized in that: The cover includes an inner ring cover and an outer ring cover. An annular platform is provided on the radial end face of the rotating ring. The annular platform is located between the inner ring cover and the outer ring cover, and a stepped sealing receiving area is provided on the annular platform. A sealing pressing area is provided on the inner ring cover and the outer ring cover to seal and connect with the sealing receiving area. The inner ring cover and the outer ring cover can be moved along the axial direction to press the sealing pressing area and the sealing receiving area together to form a sealing area.

4. A flow meter structure based on a hydraulic gate according to any one of claims 1, 2, and 3, characterized in that: An annular groove is formed on the base. A toothed ring is fixedly installed on the side of the rotating ring near the base. The toothed ring is located in the annular groove. A gear that meshes with the toothed ring is rotatably installed in the annular groove. A drive shaft is fixedly connected to the gear. The rotating ring is rotatably connected to the base and forms a sealing area at the opening of the annular groove.

5. The flow meter structure based on a hydraulic gate according to claim 1, characterized in that: The lifting mechanism includes a base, a lifting seat, and a control component. The lifting seat is vertically slidably mounted on the base. The control component is used to control the lifting seat to rise and fall and to fix it. The control component includes a drive screw, a fastening head, and a control element. The drive screw is used to drive the lifting seat to rise and fall and uses its self-locking characteristic to fix the lifting seat in its current position. The fastening head, in conjunction with the control element, is used to stably lock the lifting seat to the base.

6. The flow meter structure based on a hydraulic gate according to claim 5, characterized in that: The fastening head includes a limiting block and a clamping block. The clamping blocks are symmetrically distributed and horizontally slidably installed on the lifting seat. The limiting blocks are vertically slidably installed on the lifting seat and located between the symmetrically distributed clamping blocks, and are wedge-shapedly engaged with the clamping blocks respectively. The control component controls the sliding and locking of the limiting blocks. During the stable locking process between the lifting seat and the base, the limiting blocks move down until all the symmetrical clamping blocks abut against the base.

7. The flow meter structure based on a hydraulic gate according to claim 1, characterized in that: The scraper head is fixedly installed on the second wedge block.

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