Rotary wing type volumetric flow meter

Abstract

The invention discloses a rotary wing type volume flow meter, which relates to the technical field of fluid measurement and comprises a meter shell and a meter cover, the meter cover is in threaded connection with the meter shell, and a volume adjusting assembly is arranged in the meter shell; through cooperation of the container and the clamping head, in the circulation that the container collects fluid with a certain weight to drive the barrel to rotate by 90 degrees, the barrel and the container are driven to rotate by means of the weight of the fluid in the container, and the condition that intermittent fluid passes through a pipeline is better adapted; through cooperation of the shifting pieces and the pressing type switch, when the container drives the barrel to rotate under the action of fluid weight, one shifting piece makes contact with the protruding position of the pressing type switch and extrudes the protruding position, and when a worker carries out meter detection at set intervals, the working efficiency is greatly improved. The flow of the intermittent fluid in the period of time is calculated according to the time interval of meter detection and the number of times that the pressing type switch is pressed, so that the flow calculation requirement when the intermittent fluid passes through the pipeline is better met.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid measurement, and more particularly, to a rotary volumetric flow meter. Background Art

[0002] A volumetric flow meter is an instrument used to measure the volumetric flow rate of a fluid. It is used to calculate the volume of fluid passing through a pipeline per unit time and the flow velocity.

[0003] The volumetric flow meters in the prior art include oval gear flow meters and turbine flow meters, etc. The oval gear flow meter measures the fluid volume by driving the gear to rotate with the fluid, and the turbine flow meter drives the turbine to rotate with the fluid, and then calculates the flow velocity based on the proportional relationship between the rotation speed of the turbine and the flow velocity. When the fluid enters the meter intermittently through the pipeline, since the flow velocity and weight of a small amount of fluid are small, it cannot drive the gear and turbine to rotate immediately after entering the flow meter, making the volumetric flow meter unable to accurately measure the volume and flow velocity of the fluid when the intermittent fluid passes through the pipeline. Moreover, the internal space of the above volumetric flow meter is fixed. When fluids with different densities enter the volumetric flow meter through the pipeline, affected by the different fluid densities and viscosities, corresponding compensation needs to be carried out when calculating the rotation speeds of the gear and turbine. Not only is the adjustment more troublesome, but it is also more likely to have errors in the case of diverse fluid densities and viscosities, affecting the accuracy of the volumetric flow meter.

[0004] To solve the above problems, the inventor has proposed a rotary volumetric flow meter. Summary of the Invention

[0005] To solve the above technical problems, a rotary volumetric flow meter is provided.

[0006] To achieve the above object, the present invention can adopt the following technical solutions: The present invention provides a rotary volumetric flow meter, comprising: a meter housing and a meter cover, the meter cover is threadedly connected to the meter housing, and a volume adjustment assembly is provided inside the meter housing; The volume adjustment assembly includes a cylinder rotatably connected inside the meter housing, one end of the cylinder away from the meter housing is rotatably connected to the meter cover, a mounting seat one is fixedly connected to the inner arc surface of the cylinder, a fixed shaft is fixedly connected to the inner wall of the cylinder on the side away from the meter cover, two mounting seats two are rotatably connected to the surface of the fixed shaft, the two mounting seats two are symmetrically arranged on the fixed shaft, a mounting seat three is fixedly connected to the inner arc surface of the cylinder on the side away from the mounting seat one, a container is slidably connected inside each of the mounting seat one, mounting seat two and mounting seat three, a slot is provided on the cylinder, and sealing plates are respectively fixedly connected to both sides of the two mounting seats two.

[0007] Preferably, the mounting seat one, mounting seat two and mounting seat three are equidistantly arranged inside the cylinder.

[0008] Preferably, sealing rubber strips are arranged on one side of the four sealing plates away from the second mounting seat.

[0009] Preferably, the edge of the container away from the cylinder body is closely attached to the inner surfaces of the watch case and the watch cover, and one side of each sealing plate away from the fixed shaft abuts against the inner wall of the cylinder body.

[0010] Preferably, a connecting ring is fixedly connected to one side of the watch case away from the watch cover, a rotating disc is rotatably connected to one side of the watch case away from the watch cover, the cylinder body is fixedly connected to the rotating disc, sliding grooves are symmetrically formed in the rotating disc, the sliding grooves communicate with the cylinder body, sliding shafts are fixedly connected to one side of the two second mounting seats close to the rotating disc, the two sliding shafts are inserted into the two sliding grooves, one ends of the sliding shafts close to the cylinder body are respectively fixedly connected to the two second mounting seats, and two torsion springs are arranged on one side of the rotating disc away from the watch case.

[0011] Preferably, a connecting shaft is fixedly connected to one side of the cylinder body away from the watch cover, one end of the connecting shaft away from the cylinder body passes through the rotating disc, a runner is fixedly connected to the end of the connecting shaft passing through the rotating disc, four paddles are fixedly connected to the outer surface of the runner at equal intervals in the circumferential direction, and a push-button switch is fixedly installed on the inner arc surface of the connecting ring.

[0012] Preferably, the four paddles are arranged on the runner at equal intervals, and the paddles form an extrusion fit with the push-button switch.

[0013] Preferably, a water inlet end is fixedly connected to the top of the watch case, a guide plate is fixedly connected to the inside of the water inlet end, a water outlet end is fixedly connected to the bottom of the watch case, and a watch body is fixedly connected to one side of the connecting ring away from the watch case.

[0014] Preferably, a quantitative rotation assembly is arranged on the side surface of the watch case. The quantitative rotation assembly includes a fixed seat fixedly connected to the outer arc surface of the watch case, a nut seat fixedly connected to the middle of the fixed seat, a telescopic groove is formed at the connection between the fixed seat and the watch case, a chuck is slidably connected to one side of the telescopic groove close to the watch case, a slider is slidably connected to one side of the telescopic groove away from the watch case, and a spring is arranged between the chuck and the slider.

[0015] Preferably, an adjusting bolt is threadedly connected to the nut seat, one end of the adjusting bolt close to the watch case passes through the fixed seat, and the end of the adjusting bolt passing through the fixed seat is rotatably connected to the slider.

[0016] As described above, the characteristics and advantages of a rotary positive displacement flowmeter in the present invention are: Through the cooperation between the container and the clamp, the intermittent fluid will enter the water inlet end through the pipeline, and then fall into the container near the bottom of the guide plate under the action of the guide plate. When the fluid in the container accumulates to a certain weight and can squeeze the spring, the container drives the cylinder to rotate through the weight of the fluid. After the cylinder starts to rotate and the container tilts, the fluid in the container begins to flow out of the container and falls into the water outlet end until the cylinder rotates 90 degrees, so that the container previously located directly below the guide plate is clamped by the clamp. At this time, the fluid in the previous container is emptied when the container rotates 90 degrees, and the container clamped by the clamp continues to accumulate the fluid guided by the guide plate. When the container collects a certain weight of fluid, it drives the cylinder to rotate 90 degrees in a cycle, realizing the rotation of the cylinder and the container by the weight of the fluid in the container, which is more suitable for the situation of intermittent fluid passing through the pipeline. Through the cooperation of the paddle and the push-type switch, when the container drives the cylinder to rotate under the action of the fluid weight, the cylinder will drive the connecting shaft to rotate synchronously, thereby driving the rotating wheel to rotate synchronously. After the cylinder rotates 90 degrees, it stops under the resistance of the clamp, so that the rotating wheel rotates 90 degrees synchronously at a time. When the rotating wheel rotates 90 degrees, the four paddles on its side rotate 90 degrees synchronously, and one of the paddles will contact and squeeze the protrusion of the push-type switch. After the push-type switch is triggered, it is transmitted to the meter body through the electrical connection, so that the digital meter on the meter body counts once, thereby recording the number of times the push-type switch is continuously toggled. When the worker performs meter inspection at regular intervals, the number of times the push-type switch is pressed on the digital meter during this period of time can be read, thereby calculating the flow rate of the intermittent fluid during this period of time through the meter inspection time interval and the number of times the push-type switch is pressed, so that it is more suitable for the flow calculation needs when the intermittent fluid passes through the pipeline; Through the cooperation of the torsion spring and the sliding shaft, when measuring the fluid with a smaller density, one container is removed, and the measuring space becomes larger after the containers are changed from four to three. The sealing plates on the two mounting seats two sides close to the mounting seat three are synchronously moved to the opening of the mounting seat three and contact each other, so as to seal the gap between the cylinder and the mounting seat three after the container is drawn out. At the same time, the sealing plate on the side of the mounting seat two close to the mounting seat one will seal the gap between the original position of the mounting seat two and the cylinder, so that after the container is drawn out, the three containers are automatically adjusted to an equidistant effect, which will not affect the collection of the fluid, and is convenient for calculating the flow rate and flow velocity of the fluid. In addition, the sealing performance of the cylinder is protected by the sealing plate, so that the fluid will not enter the cylinder, ensuring a good sealing effect inside the case. Through the cooperation of the bolt and the nut seat, when the volumetric flow meter is installed on different pipelines with different fluid densities in the pipeline, the operator uses a tool to rotate the adjusting bolt in the nut seat. Under the thread action with the nut seat, the adjusting bolt rotates and penetrates deeper towards the fixed seat, thereby pushing the slider to slide in the telescopic groove towards the direction close to the meter housing, and further compressing the spring in cooperation with the chuck. After the spring is further compressed, the thrust on the chuck increases, making it necessary for the container to have a greater weight to squeeze the chuck into the telescopic groove, so as to achieve the effect of adaptively adjusting the weight required for the container and the cylinder to rotate according to the density difference of different fluids, and making it adapt to the needs of measuring different fluids. Brief Description of the Drawings

[0017] Figure 1 Schematic three-dimensional view of the overall structure shown in the present invention; Figure 2 Schematic three-dimensional view of the overall structure shown in the present invention; Figure 3 Schematic three-dimensional view of the overall structure shown in the present invention; Figure 4 Shown in the present invention Figure 3 Enlarged view of part A; Figure 5 Schematic cross-sectional three-dimensional view of the cylinder and fixed shaft structure shown in the present invention; Figure 6 Schematic three-dimensional view of the internal structure of the connecting ring shown in the present invention; Figure 7 Schematic cross-sectional three-dimensional view of the rotating disk structure shown in the present invention; Figure 8 Schematic three-dimensional view of the runner structure shown in the present invention; Figure 9 Schematic cross-sectional three-dimensional view of the guide plate structure shown in the present invention; Figure 10 Schematic cross-sectional three-dimensional view of the chuck structure shown in the present invention.

[0018] Among them, the reference numerals in the present invention are: 1, meter housing; 2, meter cover; Volume adjustment assembly: 301, cylinder; 302, first mounting seat; 303, fixed shaft; 304, second mounting seat; 305, third mounting seat; 306, container; 307, slot; 308, sealing plate; 309, connecting ring; 310, rotating disk; 311, sliding groove; 312, sliding shaft; 313, torsion spring; 314, connecting shaft; 315, runner; 316, dial; 317, push-button switch; 318, water inlet; 319, guide plate; 320, water outlet; 321, meter body; Quantitative rotation assembly: 401, fixed seat; 402, nut seat; 403, telescopic groove; 404, chuck; 405, slider; 406, spring; 407, adjusting bolt. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Refer to Figures 1 to Figure 10 As shown, it is an embodiment provided by the present invention, and a rotary volumetric flowmeter provided will be elaborated in detail below: A rotary volumetric flowmeter, such as Figures 1 to 9 As shown, it includes: a meter housing 1 and a meter cover 2. The meter cover 2 is threadedly connected to the meter housing 1, and a volume adjustment assembly is provided inside the meter housing 1; The volume adjustment component includes a cylinder 301 rotatably connected to the inside of the watch case 1, the end of the cylinder 301 away from the watch case 1 is rotatably connected to the watch cover 2, the inner arc surface of the cylinder 301 is fixedly connected to a mounting seat 1 302, the inner wall of the cylinder 301 away from the watch cover 2 is fixedly connected to a fixed shaft 303, the surface of the fixed shaft 303 is rotatably connected to two mounting seats 2 304, and the two mounting seats 2 304 are staggered and sleeved on the fixed shaft 303, the two mounting seats 2 304 are arranged in corresponding positions, the two mounting seats 2 304 are symmetrically arranged on the fixed shaft 303, the inner arc surface of the cylinder 301 away from the mounting seat 1 302 is fixedly connected to a mounting seat 305, the mounting seat 1 302, the mounting seat 2 304 and the mounting seat Containers 306 are slidably connected in the three 305, and a groove 307 is provided on the cylinder 301. Sealing plates 308 are fixedly connected on both sides of the two mounting seats 304, and the side of each sealing plate 308 away from the fixed axis 303 conflicts with the inner wall of the cylinder 301. A sealing strip is provided on the side of each sealing plate 308 away from the mounting seat 2 304. The mounting seats 1 302, 2 304 and 305 are equidistantly arranged in the cylinder 301. The edge of the container 306 away from the cylinder 301 is tightly fitted with the inner surface of the case 1 and the cover 2, so that every two containers 306 cooperate with the case 1 and the cover 2 to form a separate sealed space. The case 1 is away from the cover 2. A connecting ring 309 is fixedly connected to one side of the watch case 1, a rotating disk 310 is rotatably connected to the side of the watch case 1 away from the watch cover 2, the cylinder 301 is fixedly connected to the rotating disk 310, and sliding grooves 311 are symmetrically provided on the rotating disk 310, and the sliding grooves 311 are communicated with the cylinder 301, and the two mounting seats 304 are fixedly connected to the side close to the rotating disk 310 with sliding shafts 312, and the two sliding shafts 312 are inserted in the two sliding grooves 311, and the ends of the two sliding shafts 312 close to the cylinder 301 are respectively fixedly connected to the two mounting seats 304, and two torsion springs 313 are arranged on the side of the rotating disk 310 away from the watch case 1, and a connecting shaft 314 is fixedly connected to the side of the cylinder 301 away from the watch cover 2. The end away from the cylinder 301 passes through the rotating disk 310, and the end of the connecting shaft 314 passing through the rotating disk 310 is fixedly connected to the rotating wheel 315, and the outer surface of the rotating wheel 315 is annularly and equidistantly fixedly connected with four paddles 316, and the inner arc surface of the connecting ring 309 is fixedly installed with a push switch 317, and the paddle 316 and the push switch 317 form an extrusion fit, and the top of the watch case 1 is fixedly connected with a water inlet end 318, and the inside of the water inlet end 318 is fixedly connected with a guide plate 319, and the bottom of the watch case 1 is fixedly connected with a water outlet end 320, and the side of the connecting ring 309 away from the watch case 1 is fixedly connected with a meter body 321, and the push switch 317 is electrically connected with the meter body 321, and a small digital meter is arranged on the meter body 321.

[0021] Further, such as Figure 1 , Figures 7 to 10As shown in the figure, a quantitative rotation assembly is provided on the side of the watch case 1. The quantitative rotation assembly includes a fixed seat 401 fixedly connected to the outer arc surface of the watch case 1. A nut seat 402 is fixedly connected to the middle of the fixed seat 401. A telescopic groove 403 is opened at the connection between the fixed seat 401 and the watch case 1. A chuck 404 is slidably connected to one side of the telescopic groove 403 close to the watch case 1. A slider 405 is slidably connected to the other side of the telescopic groove 403 away from the watch case 1. A spring 406 is arranged between the chuck 404 and the slider 405. An adjusting bolt 407 is threadedly connected to the nut seat 402. One end of the adjusting bolt 407 close to the watch case 1 passes through the fixed seat 401. The end of the adjusting bolt 407 passing through the fixed seat 401 is rotatably connected to the slider 405.

[0022] Combined with the above embodiments, the following is the entire working process and working principle of the above embodiments: The initial state is: The watch cover 2 is threadedly connected to the watch case 1. Containers 306 are installed in the first mounting seat 302, the two second mounting seats 304 and the third mounting seat 305. The sliding shaft 312 is located in the sliding groove 311 and close to one end of the torsion spring 313. The torsion spring 313 is in a state of torsional energy storage under the extrusion of the sliding shaft 312. The first mounting seat 302, the second mounting seats 304 and the third mounting seat 305 are equidistant in the cylinder 301. The side of the slider 405 away from the spring 406 fits against the inner wall of the telescopic groove 403. The spring 406 is in a compressed state. The chuck 404 extends out of the telescopic groove 403 under the pushing action of the spring 406 and abuts against the container 306.

[0023] The working state is: Flow measurement: After installing the volumetric flow meter on the pipeline to be detected, the intermittent fluid will enter the water inlet end 318 through the pipeline. Subsequently, under the guiding action of the guide plate 319, it will fall into the container 306 near the bottom end of the guide plate 319 and gradually accumulate in the container 306 when the fluid intermittently enters the water inlet end 318. During this process, as the weight of the fluid gradually increases, the force exerted by the container 306 on the chuck 404 will gradually increase. When the fluid in the container 306 accumulates to a certain weight and can compress the spring 406, the container 306 will push the chuck 404 into the telescopic groove 403 and further compress the spring 406, so that the container 306 is no longer blocked by the chuck 404. Thus, the container 306 drives the cylinder body 301 to rotate by the weight of the fluid. When the container 306 rotates clockwise by a certain distance, the chuck 404 immediately extends out of the telescopic groove 403 under the action of the spring 406. The cylinder body 301 starts to rotate, causing the container 306 to tilt, and then the fluid in the container 306 starts to flow out of the container 306 and fall into the water outlet end 320 until the cylinder body 301 rotates 90 degrees, causing the container 306 previously located directly below the guide plate 319 to be blocked by the chuck 404. At this time, the fluid in the previous container 306 is emptied when the container 306 rotates 90 degrees. The container 306 blocked by the chuck 404 continues to accumulate the fluid guided by the guide plate 319. In the cycle where the container 306 drives the cylinder body 301 to rotate 90 degrees when it collects a certain weight of fluid, it realizes driving the rotation of the cylinder body 301 and the container 306 by the weight of the fluid in the container 306, which is more suitable for the situation of intermittent fluid passing through the pipeline.

[0024] Flow velocity measurement: When the container 306 drives the cylinder body 301 to rotate under the action of the fluid weight, the cylinder body 301 will drive the connecting shaft 314 to rotate synchronously, thereby driving the runner 315 to rotate synchronously. After the cylinder body 301 rotates 90 degrees, it stops under the resistance of the chuck 404, causing the runner 315 to rotate 90 degrees synchronously once. When the runner 315 rotates 90 degrees, the four vanes 316 on its side rotate 90 degrees synchronously. One of the vanes 316 will contact and squeeze the protruding part of the push-button switch 317, so that the push-button switch 317 is triggered once every 90 degrees of rotation of the runner 315. After the push-button switch 317 is triggered, it is transmitted to the meter body 321 through electrical connection, causing the digital meter on the meter body 321 to count and jump once. Thus, when the push-button switch 317 is continuously toggled, the number of toggles is recorded. When the worker performs meter inspection at regular intervals, the number of times the push-button switch 317 is pressed on the digital meter during this period can be read. Thus, the flow rate of the intermittent fluid during this period can be calculated based on the time interval of the meter inspection and the number of times the push-button switch 317 is pressed.

[0025] Pressure regulation: When the volumetric flow meter is installed in different pipelines with different fluid densities in the pipelines, the tightness of the spring 406 can be adjusted so that the fluid with a larger density can accumulate to fill the cavity of the container 306 and then drive the container 306 and the cylinder 301 to rotate. When adjusting, the staff uses a tool to rotate the adjusting bolt 407 in the nut seat 402. Under the thread action with the nut seat 402, the adjusting bolt 407 rotates and penetrates deeper into the fixed seat 401, thereby pushing the slider 405 to slide in the telescopic groove 403 towards the direction close to the meter housing 1, so as to cooperate with the chuck 404 to further compress the spring 406. After the spring 406 is further compressed, the thrust on the chuck 404 increases, so that the container 306 needs a greater weight to squeeze the chuck 404 into the telescopic groove 403, thereby achieving the effect of adaptively adjusting the weight required for the container 306 and the cylinder 301 to rotate according to the density difference of different fluids, so as to adapt to the measurement requirements of different fluids.

[0026] Adjustable volume: For fluids with a smaller density, when enough weight is accumulated in the container 306 to drive the cylinder 301 and the container 306 to rotate, at this time, the fluid volume is large and will overflow the cavity of the container 306. One container 306 can be removed. After the number of containers 306 changes from four to three, the metering space becomes larger. When adjusting, the staff needs to unscrew the watch cover 2 and pull out the container 306 in the mounting seat three 305 outward. When the container 306 in the mounting seat three 305 completely slides out of the mounting seat three 305, the sealing plate 308 on the side of the mounting seat two 304 close to the mounting seat three 305 loses its limit. At this time, the torsion spring 313 will push the sliding shaft 312, so that the sliding shaft 312 slides in the sliding groove 311 towards the side away from the torsion spring 313. Through the fixed connection between the sliding shaft 312 and the mounting seat two 304, the two mounting seats two 304 are driven to rotate around the fixed shaft 303 towards the direction close to the mounting seat three 305, so that the sealing plates 308 on the side of the two mounting seats two 304 close to the mounting seat three 305 move synchronously to the opening of the mounting seat three 305 and abut against each other, so as to seal the gap between the cylinder 301 and the mounting seat three 305 after the container 306 is taken out. At the same time, the sealing plate 308 on the side of the mounting seat two 304 close to the mounting seat one 302 will seal the gap between the original position of the mounting seat two 304 and the cylinder 301, so as to achieve the effect that the three containers 306 are automatically adjusted to be equidistant after the container 306 is taken out, which will not affect the collection of the fluid, is convenient for calculating the flow rate and flow velocity of the fluid, and the sealing performance of the cylinder 301 is protected by the sealing plate 308, so that the fluid will not enter the cylinder 301, ensuring a good sealing effect inside the meter housing 1.

[0027] The above are only the embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary vane volume flow meter, characterized in that: include: A watch case (1) and a watch cover (2), wherein the watch cover (2) is threadedly connected to the watch case (1), and a volume adjustment component is arranged inside the watch case (1); The volume adjustment assembly comprises a cylinder (301) rotatably connected to the inside of the watch case (1); one end of the cylinder (301) away from the watch case (1) is rotatably connected to the watch cover (2); a mounting seat 1 (302) is fixedly connected to the inner arc surface of the cylinder (301); a fixed shaft (303) is fixedly connected to the inner wall of the cylinder (301) away from the watch cover (2); two mounting seats 2 (304) are rotatably connected to the surface of the fixed shaft (303); the two mounting seats The second mounting seat (304) is symmetrically arranged on the fixed shaft (303); a mounting seat three (305) is fixedly connected to the side of the inner arc surface of the cylinder (301) away from the mounting seat one (302); a container (306) is slidably connected inside the mounting seat one (302), the mounting seat two (304) and the mounting seat three (305); a groove (307) is opened on the cylinder (301); and sealing plates (308) are fixedly connected to the two sides of the two mounting seats two (304) respectively.

2. A rotary vane volume flow meter according to claim 1, characterized in that: The mounting seat 1 (302), the mounting seat 2 (304) and the mounting seat 3 (305) are arranged in the cylinder (301) at equal distances from each other.

3. A rotary vane volume flow meter according to claim 2, characterized in that: A sealing strip is provided on one side of the four sealing plates (308) away from the second mounting seat (304).

4. A rotary vane volume flow meter according to claim 3, characterized in that: The edge of the container (306) on one side away from the cylinder (301) is in close contact with the inner surfaces of the watch case (1) and the watch cover (2), and the side of each sealing plate (308) away from the fixed shaft (303) is in contact with the inner wall of the cylinder (301).

5. A rotary vane volume flow meter according to claim 4, characterized in that: A connecting ring (309) is fixedly connected to the side of the watch case (1) away from the watch cover (2); a rotating disk (310) is rotatably connected to the side of the watch case (1) away from the watch cover (2); the cylinder (301) is fixedly connected to the rotating disk (310); sliding grooves (311) are symmetrically provided on the rotating disk (310); the sliding grooves (311) are communicated with the cylinder (301); a sliding shaft (312) is fixedly connected to the side of the two mounting seats (304) close to the rotating disk (310); the two sliding shafts (312) are inserted into the two sliding grooves (311); one end of the sliding shaft (312) close to the cylinder (301) is fixedly connected to the two mounting seats (304) respectively; and two torsion springs (313) are provided on the side of the rotating disk (310) away from the watch case (1).

6. A rotary vane volume flow meter according to claim 5, characterized in that: A connecting shaft (314) is fixedly connected to a side of the cylinder (301) away from the watch cover (2); an end of the connecting shaft (314) away from the cylinder (301) passes through a rotating disk (310); an end of the connecting shaft (314) passing through the rotating disk (310) is fixedly connected to a rotating wheel (315); four paddles (316) are fixedly connected to the outer surface of the rotating wheel (315) in an annular manner and at equal intervals; and a push-type switch (317) is fixedly mounted on the inner arc surface of the connecting ring (309).

7. A rotary vane volume flow meter according to claim 6, characterized in that: The four paddles (316) are equidistantly arranged on the rotating wheel (315), and the paddles (316) and the push-type switch (317) form a squeeze fit.

8. A rotary vane volume flow meter according to claim 7, characterized in that: The top of the watch case (1) is fixedly connected to a water inlet end (318), the interior of the water inlet end (318) is fixedly connected to a guide plate (319), the bottom of the watch case (1) is fixedly connected to a water outlet end (320), and the side of the connecting ring (309) away from the watch case (1) is fixedly connected to a watch body (321).

9. A rotary vane volume flow meter according to claim 1, characterized in that: A quantitative rotating assembly is arranged on the side of the watch case (1), and the quantitative rotating assembly comprises a fixing seat (401) fixedly connected to the outer arc surface of the watch case (1), a nut seat (402) is fixedly connected to the middle of the fixing seat (401), a telescopic groove (403) is provided at the connection between the fixing seat (401) and the watch case (1), a clamping head (404) is slidably connected to the side of the telescopic groove (403) close to the watch case (1), a sliding block (405) is slidably connected to the side of the telescopic groove (403) away from the watch case (1), and a spring (406) is arranged between the clamping head (404) and the sliding block (405).

10. A rotary vane volume flow meter according to claim 9, characterized in that: The nut seat (402) is internally threadedly connected with an adjusting bolt (407); one end of the adjusting bolt (407) close to the watch case (1) passes through the fixing seat (401); one end of the adjusting bolt (407) passes through the fixing seat (401) and is rotatably connected to the slider (405).

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