Metal tube float flowmeter

Abstract

The application discloses a metal pipe float flowmeter, and relates to the technical field of flow monitoring.The metal pipe float flowmeter comprises a flowmeter main body, a measuring pipe is fixedly installed on one side of the flowmeter main body, installation flanges are installed at two ends of the measuring pipe, a fixing frame is installed on one side of the installation flange at the discharging end position of the measuring pipe, a connecting column is slidably connected in the middle of the fixing frame, and a float is arranged at one end of the connecting column.The T-shaped sliding rod is pushed upward by the buoyancy of the first buoy, and the first positive electrode block is driven to move upward.When the first positive electrode block contacts the first negative electrode block at the top of the inner cavity of the first fixed box, the first motor starts to rotate, the first rotating shaft is driven to rotate, the connecting rod fixedly connected with the first rotating shaft starts to rotate, and the two groups of scrapers are driven to rotate, so that the float can quickly and stably fall back and reset after the medium stops flowing;the reliability of the float falling back is high, the float does not need to be manually reset, and the metal pipe float flowmeter has high practicability.

Description

Technical Field

[0001] This invention relates to the field of flow monitoring technology, specifically to a metal tube float flowmeter. Background Technology

[0002] In a metal tube float flow meter, the float moves upward as the flow rate changes within the measuring tube. At a certain position, the buoyancy force on the float balances its weight. At this point, the annular gap area between the float and the orifice plate (or tapered tube) remains constant. The annular gap area is proportional to the rise height of the float. In other words, the position of the float in the measuring tube represents the magnitude of the flow rate. Changes in the float's position are transmitted from an internal magnet to an external indicator, allowing the indicator to accurately indicate the current flow rate value.

[0003] Currently, when metal tube float flow meters are in use, the float can move along the pipe axis inside the measuring tube. In actual use, when the medium stops flowing, the float will move back to its original position under the action of gravity. However, the float often fails to fall normally due to friction from impurities, which affects the subsequent flow detection. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a metal tube float flowmeter to solve the technical problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal tube float flowmeter, comprising a flowmeter body, a measuring tube fixedly installed on one side of the flowmeter body, mounting flanges installed at both ends of the measuring tube, a fixing frame installed on one side of the mounting flange at the discharge end of the measuring tube, a connecting column slidably connected in the middle of the fixing frame, a float provided at one end of the connecting column, an orifice plate fixedly installed on the inner wall of the measuring tube, a cleaning mechanism installed below the orifice plate, a filter assembly installed on one side of the mounting flange at the bottom, a fixing mechanism installed inside the mounting flange at the inlet end of the measuring tube, and a measuring assembly installed on one side of the mounting flange at the discharge end of the measuring tube;

[0006] The cleaning mechanism includes a first fixed box fixed to the inner wall of the measuring tube below the orifice plate. A first cylinder is fixedly installed at the bottom center of the first fixed box. A first fixed ring is installed at the top of the inner cavity of the first cylinder. A T-shaped sliding rod passes through one side of the first fixed ring. A first spring is installed between one end of the T-shaped sliding rod and the first fixed ring. A first float is fixed to one end of the T-shaped sliding rod. A first positive electrode block is installed on the surface of the other end of the T-shaped sliding rod. A first negative electrode block is installed at the top of the inner cavity of the first fixed box. A first motor is installed at the top center of the inner cavity of the first fixed box. A first rotating shaft is rotatably connected to one side of the first motor. A connecting rod is fixed to the other end of the first rotating shaft. Two sets of scrapers are fixedly connected to both ends of the connecting rod. One side of each set of scrapers is in contact with the inner wall of the orifice plate.

[0007] Preferably, the filter assembly includes a second fixed box fixed to the inner wall of the measuring tube below the first fixed box. A second cylinder is fixedly installed on one side of the bottom of the second fixed box. A second fixed ring is installed on the top of the inner cavity of the second cylinder. A sliding column passes through one side of the second fixed ring. A second spring is installed between one side of the sliding column and the second fixed ring. A second float is fixedly installed on one side of the sliding column. A second positive electrode block is fixedly installed on the other side of the sliding column. A second negative electrode block is installed at a corresponding position on the top of the inner cavity of the second fixed box. A second motor is installed in the middle of the top of the inner cavity of the second fixed box. A second rotating shaft is rotatably connected to one side of the second motor. A scraper is fixed to the other end of the second rotating shaft.

[0008] Preferably, a filter screen is installed inside the mounting flange at the feed end of the measuring tube, and one side of the scraper bar is in contact with the filter screen.

[0009] Preferably, the fixing mechanism includes two sets of arc-shaped clamps slidably connected inside the mounting flange at the feed end of the measuring tube. A T-shaped connecting rod is fixed to one side of each of the two sets of arc-shaped clamps. A slider is fixed to both ends of the T-shaped connecting rod. A threaded rod with positive and negative threads passes through one side of each of the two sets of sliders. A rotating wheel is fixed to one end of each of the two sets of threaded rods. A belt is sleeved on the outside of each of the two sets of rotating wheels. A turntable is fixedly installed on the outside of one set of threaded rods through the mounting flange.

[0010] Preferably, the measuring component includes a measuring rod fixedly installed on one side of the mounting flange at the discharge end of the measuring tube, and connecting ropes are fixedly attached to the bottom of both sides of the mounting flange at corresponding positions of the measuring rod, with a weight fixedly connected to the lower end of each connecting rope.

[0011] Preferably, the outer wall of the measuring tube is fixedly connected to one end of the two mounting flanges facing each other with a reinforcing plate.

[0012] In summary, the present invention has the following main beneficial effects:

[0013] 1. In this invention, the first float is pushed upward by the buoyancy of the T-shaped sliding rod, which in turn moves the first positive electrode block upward. When the first positive electrode block comes into contact with the first negative electrode block at the top of the inner cavity of the first fixed box, the first motor starts to rotate, which drives the first rotating shaft to rotate. The connecting rod fixed to it starts to rotate, thereby driving the two sets of scrapers to rotate. This allows the float to quickly and stably fall back to its original position after the medium stops flowing. The float has high reliability in falling back and does not require manual return of the float to its original position, making it highly practical.

[0014] 2. The filter assembly 300 can filter incoming impurities, reducing their impact on the float 160;

[0015] 3. The operator rotates the turntable 470, which drives a set of positive and negative threaded screws 440 to rotate. Through the interaction of two sets of rotating wheels 450 and belt 460, another set of positive and negative threaded screws 440 can be driven to rotate. The two sets of sliders 430 slide towards each other on the positive and negative threaded screws 440, which drives the two sets of T-shaped connecting rods 420 to slide towards each other, thereby driving the two sets of arc-shaped clamping plates 410 to slide towards each other. After the operator has installed the filter screen 3930, the turntable 470 is reversed to control the relative movement of the two sets of arc-shaped clamping plates 410 to fix the filter screen 3930, making it easy to disassemble and install the filter screen 3930. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the inside of the measuring tube of the present invention;

[0018] Figure 3 This is a schematic diagram of the cleaning mechanism of the present invention;

[0019] Figure 4 This is a partial schematic diagram of the filter assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the fixing mechanism structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the bottom structure of the present invention;

[0022] Figure 7 This is an enlarged view of point A in the present invention.

[0023] In the diagram: 100, flow meter body; 200, cleaning mechanism; 300, filter assembly; 400, fixing mechanism; 500, measuring assembly;

[0024] 110. Measuring tube; 120. Mounting flange; 130. Reinforcing plate; 140. Fixing bracket; 150. Connecting column; 160. Float; 170. Orifice plate;

[0025] 210. Fixed box No. 1; 220. Cylinder No. 1; 230. Fixed ring No. 1; 240. T-shaped sliding rod; 250. Spring No. 1; 260. Float No. 1; 270. Positive electrode block No. 1; 280. Negative electrode block No. 1; 290. Motor No. 1; 2910. Rotating shaft No. 1; 2920. Connecting rod; 2930. Scraper;

[0026] 310. Fixed box No. 2; 320. Cylinder No. 2; 330. Fixed ring No. 2; 340. Sliding column; 350. Spring No. 2; 360. Float No. 2; 370. Positive electrode block No. 2; 380. Negative electrode block No. 2; 390. Motor No. 2; 3910. Rotating shaft No. 2; 3920. Scraper rod; 3930. Filter screen;

[0027] 410. Arc-shaped clamp; 420. T-shaped connecting rod; 430. Slider; 440. Positive and negative threaded screw; 450. Rotating wheel; 460. Belt; 470. Turntable;

[0028] 510. Measuring rod; 520. Connecting rope; 530. Weight. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of the present invention will now be described.

[0031] A metal tube float flowmeter, such as Figures 1 to 7 As shown, the flow meter includes a main body 100, a measuring tube 110 fixedly installed on one side of the main body 100, mounting flanges 120 installed at both ends of the measuring tube 110, a fixing frame 140 installed on one side of the mounting flange 120 at the outlet end of the measuring tube 110, a connecting column 150 slidably connected in the middle of the fixing frame 140, a float 160 provided at one end of the connecting column 150, an orifice plate 170 fixedly installed on the inner wall of the measuring tube 110, a cleaning mechanism 200 installed below the orifice plate 170, a filter assembly 300 installed on one side of the bottom mounting flange 120, a fixing mechanism 400 installed inside the mounting flange 120 at the inlet end of the measuring tube 110, and a measuring assembly 500 installed on one side of the mounting flange 120 at the outlet end of the measuring tube 110.

[0032] When the device starts testing, the cleaning mechanism 200 removes impurities from the inner wall of the orifice plate 170, allowing the float 160 to quickly and stably return to its original position after the medium stops flowing. The float 160 returns to its original position with high reliability, eliminating the need for manual repositioning and enhancing its practicality. The filter assembly 300 filters incoming impurities, reducing their impact on the float 160. The fixing mechanism 400 secures the filter screen 3930 and facilitates disassembly. The measuring assembly 500 allows for easy observation of the verticality of the measuring tube 110 during device use, ensuring accurate measurements.

[0033] The cleaning mechanism 200 includes a first fixed box 210 fixed to the inner wall of the measuring tube 110 below the orifice plate 170. A first cylinder 220 is fixedly installed at the bottom center of the first fixed box 210. A first fixed ring 230 is installed at the top of the inner cavity of the first cylinder 220. A T-shaped sliding rod 240 passes through one side of the first fixed ring 230. A first spring 250 is installed between one end of the T-shaped sliding rod 240 and the first fixed ring 230. A first float 260 is fixed to one end of the T-shaped sliding rod 240. A positive electrode block 270 is installed on the surface of the other end of the T-shaped sliding rod 240. A negative electrode block 280 is installed on the top of the inner cavity of the first fixed box 210. A motor 290 is installed in the middle of the top of the inner cavity of the first fixed box 210. A rotating shaft 2910 is rotatably connected to one side of the motor 290. A connecting rod 2920 is fixed to the other end of the rotating shaft 2910. Two sets of scrapers 2930 are fixedly connected to both ends of the connecting rod 2920. One side of the two sets of scrapers 2930 is in contact with the inner wall of the orifice plate 170.

[0034] When the medium enters the measuring tube 110, the first float 260 is pushed upward by buoyancy, causing the T-shaped sliding rod 240 to slide upward, which in turn moves the first positive electrode block 270 upward. When the first positive electrode block 270 contacts the first negative electrode block 280 at the top of the inner cavity of the first fixed box 210, the first motor 290 starts to rotate, driving the first rotating shaft 2910 to rotate. The connecting rod 2920 fixed to it starts to rotate, thereby driving the two sets of scrapers 2930 to rotate, removing impurities adhering to the inner wall of the orifice plate 170. The material scraping process allows the float 160 to quickly and stably return to its original position after the test is completed. The float 160 has high reliability in returning to its original position and does not require manual return. It is highly practical. The No. 1 spring 250 installed between one end of the T-shaped sliding rod 240 and the No. 1 fixed ring 230 ensures that the T-shaped sliding rod 240 is pushed back to its original position by the elastic force of the No. 1 spring 250 immediately after the medium is stopped. The No. 1 positive electrode block 270 and the No. 1 negative electrode block 280 separate, and the No. 1 motor 290 stops rotating.

[0035] Please refer to this carefully. Figure 2 and 4As shown, the filter assembly 300 includes a second fixed box 310 fixed to the inner wall of the measuring tube 110 below the first fixed box 210. A second cylinder 320 is fixedly installed on one side of the bottom of the second fixed box 310. A second fixed ring 330 is installed on the top of the inner cavity of the second cylinder 320. A sliding column 340 passes through one side of the second fixed ring 330. A second spring 350 is installed between one side of the sliding column 340 and the second fixed ring 330. A second float 360 is fixedly installed on one side of the sliding column 340. A second positive electrode block 370 is fixedly installed on the other side of the sliding column 340. A second negative electrode block 380 is installed at the corresponding position on the top of the inner cavity of the second fixed box 310. A second motor 390 is installed in the middle of the top of the inner cavity of the second fixed box 310. A second rotating shaft 3910 is rotatably connected to one side of the second motor 390. A scraper 3920 is fixed to the other end of the second rotating shaft 3910.

[0036] When the medium enters the measuring tube 110, the second float 360 is pushed upward by the buoyancy of the sliding column 340, which in turn moves the second positive electrode block 370 upward. When the second positive electrode block 370 comes into contact with the second negative electrode block 380 at the top of the inner cavity of the second fixed box 310, the second motor 390 starts to rotate, which drives the second rotating shaft 3910 to rotate. The scraper 3920 fixed to it starts to rotate, scraping off the impurities attached to one side of the filter screen 3930 to prevent the impurities from clogging the filter screen 3930 and affecting the test results.

[0037] Please refer to this carefully. Figure 6 As shown, a filter screen 3930 is installed inside the mounting flange 120 at the feed end of the measuring tube 110, and one side of the scraper 3920 is in contact with the filter screen 3930.

[0038] The filter screen 3930 filters impurities entering the measuring tube 110, reducing the impact of impurities on the float 160.

[0039] Please refer to this carefully. Figure 5 As shown, the fixing mechanism 400 includes two sets of arc-shaped clamping plates 410 slidably connected inside the mounting flange 120 at the feed end of the measuring tube 110. A T-shaped connecting rod 420 is fixed on one side of each set of arc-shaped clamping plates 410. Slider blocks 430 are fixed at both ends of the T-shaped connecting rod 420. A threaded screw 440 with positive and negative threads passes through one side of each set of sliders 430. A rotating wheel 450 is fixed at one end of each set of threaded screws 440. A belt 460 is sleeved on the outside of each set of rotating wheels 450. A set of threaded screws with positive and negative threads passes through the mounting flange 120 to the outside where a turntable 470 is fixedly installed.

[0040] When installing filter screen 3930, the operator rotates turntable 470, which drives a set of positive and negative threaded screws 440 to rotate. Through the interaction of two sets of rotating wheels 450 and belt 460, another set of positive and negative threaded screws 440 can be driven to rotate. Two sets of sliders 430 slide towards each other on the positive and negative threaded screws 440, which drives two sets of T-shaped connecting rods 420 to slide towards each other, thereby driving two sets of arc-shaped clamping plates 410 to slide towards each other. After the operator has installed filter screen 3930, the operator reverses turntable 470 to control the relative movement of the two sets of arc-shaped clamping plates 410 to fix filter screen 3930, making it easy to disassemble and install filter screen 3930.

[0041] Please refer to this carefully. Figure 7 As shown, the measuring assembly 500 includes a measuring rod 510 fixedly installed on one side of the mounting flange 120 at the discharge end of the measuring tube 110. Connecting ropes 520 are fixed at the bottom of both sides of the mounting flange 120 at the corresponding positions of the measuring rod 510. A weight block 530 is fixedly connected to the lower end of each connecting rope 520.

[0042] When installing the device, the connecting rope 520 can be kept vertical by using the weight block 530. When the connecting rope 520 is misaligned with the measuring rod 510, it can be determined whether the measuring tube 110 is tilted. If so, it is necessary to readjust and install the measuring tube 110 to ensure that the measuring tube 110 is installed vertically.

[0043] Please refer to this carefully. Figure 1 As shown, a reinforcing plate 130 is fixedly connected to the outer wall of the measuring tube 110 and the opposite end of the two mounting flanges 120.

[0044] The reinforcing plate 130 can improve the overall strength of the measuring tube 110.

[0045] In use, when the device starts testing, the cleaning mechanism 200 removes impurities from the inner wall of the orifice plate 170. When the medium enters the measuring tube 110, the first float 260 is pushed upward by buoyancy, causing the T-shaped sliding rod 240 to slide upward, which in turn moves the first positive electrode block 270 upward. When the first positive electrode block 270 contacts the first negative electrode block 280 at the top of the inner cavity of the first fixed box 210, the first motor 290 starts to rotate, driving the first rotating shaft 2910 to rotate. The connecting rod 2920 fixed to it starts to rotate, thereby driving the two sets of scrapers. The rotation of plate 2930 allows float 160 to quickly and stably return to its original position after the medium stops flowing. The return of float 160 is highly reliable and does not require manual repositioning, making it highly practical. The filter assembly 300 can filter incoming impurities, reducing their impact on float 160. The fixing mechanism 400 fixes the filter screen 3930 and also facilitates disassembly. The measuring assembly 500 allows for easy observation of the verticality of the measuring tube 110 during device use, ensuring normal measurement.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A metal tube float flowmeter, comprising a flowmeter body (100), characterized in that: A measuring tube (110) is fixedly installed on one side of the flowmeter body (100). Mounting flanges (120) are installed at both ends of the measuring tube (110). A fixing bracket (140) is installed on one side of the mounting flange (120) at the discharge end of the measuring tube (110). A connecting column (150) is slidably connected in the middle of the fixing bracket (140). A float (160) is provided at one end of the connecting column (150). An orifice plate (170) is fixedly installed on the inner wall of the measuring tube (110). A cleaning mechanism (200) is installed below (170), a filter assembly (300) is installed on one side of the bottom mounting flange (120), a fixing mechanism (400) is installed inside the mounting flange (120) at the feed end of the measuring tube (110), and a measuring assembly (500) is installed on one side of the mounting flange (120) at the discharge end of the measuring tube (110); the cleaning mechanism (200) includes a component fixed to the inner wall of the measuring tube (110) below the orifice plate (170). A first fixed box (210) has a first cylindrical cylinder (220) fixedly installed at the middle of its bottom. A first fixed ring (230) is installed at the top of the inner cavity of the first cylindrical cylinder (220). A T-shaped sliding rod (240) passes through one side of the first fixed ring (230). A first spring (250) is installed between one end of the T-shaped sliding rod (240) and the first fixed ring (230). A first float (260) is fixed to one end of the T-shaped sliding rod (240). (240) A positive electrode block (270) is installed on the other end surface. A negative electrode block (280) is installed on the top of the inner cavity of the first fixed box (210). A motor (290) is installed in the middle of the top of the inner cavity of the first fixed box (210). A rotating shaft (2910) is rotatably connected to one side of the first motor (290). A connecting rod (2920) is fixed to the other end of the first rotating shaft (2910). Two sets of scrapers (2930) are fixedly connected to both ends of the connecting rod (2920). One side of each of the two sets of scrapers (2930) is in contact with the inner wall of the perforated plate (170).

2. The metal tube float flowmeter according to claim 1, characterized in that: The filter assembly (300) includes a second fixed box (310) fixed to the inner wall of the measuring tube (110) below the first fixed box (210). A second cylinder (320) is fixedly installed on one side of the bottom of the second fixed box (310). A second fixing ring (330) is installed on the top of the inner cavity of the second cylinder (320). A sliding post (340) passes through one side of the second fixing ring (330). A second spring (350) is installed between one side of the sliding post (340) and the second fixing ring (330). A second float (360) is fixedly installed on one side of the sliding column (340), and a second positive electrode block (370) is fixedly installed on the other side of the sliding column (340). A second negative electrode block (380) is installed at the corresponding position on the top of the inner cavity of the second fixed box (310). A second motor (390) is installed in the middle of the top of the inner cavity of the second fixed box (310). A second rotating shaft (3910) is rotatably connected to one side of the second motor (390), and a scraper (3920) is fixed to the other end of the second rotating shaft (3910).

3. The metal tube float flowmeter according to claim 2, characterized in that: A filter screen (3930) is installed inside the mounting flange (120) at the feed end of the measuring tube (110), and one side of the scraper (3920) is in contact with the filter screen (3930).

4. The metal tube float flowmeter according to claim 1, characterized in that: The fixing mechanism (400) includes two sets of arc-shaped clamps (410) slidably connected inside the mounting flange (120) at the feed end of the measuring tube (110). A T-shaped connecting rod (420) is fixed on one side of each set of arc-shaped clamps (410). Slider blocks (430) are fixed at both ends of the T-shaped connecting rod (420). A threaded screw (440) passes through one side of each set of sliders (430). A turntable (470) is fixedly installed on the outside of one set of threaded screws (440) through the mounting flange (120).

5. A metal tube float flowmeter according to claim 4, characterized in that: Both sets of positive and negative threaded screws (440) have a rotating wheel (450) fixed at one end, and a belt (460) is fitted on the outside of the two sets of rotating wheels (450).

6. A metal tube float flowmeter according to claim 1, characterized in that: The measuring assembly (500) includes a measuring rod (510) fixedly installed on one side of the mounting flange (120) at the discharge end of the measuring tube (110). Connecting ropes (520) are fixed at the bottom of both sides of the mounting flange (120) at the corresponding positions of the measuring rod (510). A weight (530) is fixedly connected to the lower end of each connecting rope (520).

7. A metal tube float flowmeter according to claim 1, characterized in that: The outer wall of the measuring tube (110) is fixedly connected to a reinforcing plate (130) at one end of the two mounting flanges (120) facing each other.

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