A small flow water meter detection device to prevent sedimentation

Abstract

The present invention provides an anti-deposition small flow water meter detection device, which relates to the technical field of flow detection, and comprises a detection tube, a flow detector is fixedly installed on the top outer wall of the detection tube, and a display screen is installed on the upper end of the flow detector, electrodes are installed on the upper and lower ends of the inner wall of the detection tube, a cleaning tube is fixed at one end of the detection tube, and the inner diameter of the cleaning tube is larger than that of the detection tube, an inner tube is arranged inside the cleaning tube, and the outer diameter of the inner tube is smaller than the inner diameter of the detection tube, a wall scraper assembly is arranged on the outer surface of the inner tube, and the wall scraper assembly comprises a connecting plate, the cleaning tube is installed at one end of the detection tube, the wall scraper assembly is pushed into the detection tube by a translation assembly, the wall scraper assembly rotates to clean the inner wall of the detection tube, cleans the attached scale and pushes it into the cleaning tube in the process of returning, so as to facilitate the scale to be sent out through the spacing space between the inner tube and the cleaning tube, save costs, and facilitate the cleaning of the inside of the detection tube.

Description

Technical Field

[0001] The invention relates to the technical field of flow detection, in particular to an anti-deposition small-flow water meter detection device. Background Art

[0002] When the water meter is in use, because the flow is inconsistent, a corresponding small flow detection device is required for the small flow water meter during detection. The existing flow detection device is connected to the water pipe through a pipeline connection to detect the water flow passing through.

[0003] When water flows through and is stationary, microorganisms and impurities in the water flow will adhere to the inner wall of the pipe and produce scale. When there is a lot of scale, it is easy to affect the detection accuracy of the flow meter. At the same time, pipes with small flow rates generally have smaller water flows. If there is still a lot of scale accumulated on the inner wall of the pipe, it is easy to cause pipe blockage and affect the water flow rate passing through the flow meter, affecting the results of water flow detection. The common physical treatment methods for scale inside pipes in the prior art include: high-pressure water impact descaling, ultrasonic descaling, mechanical descaling, etc. Ultrasonic descaling is currently the most common, but this method will result in higher costs, and mechanical treatment methods make it difficult to clean and remove the scale, and it is also inconvenient to manually disassemble the pipe for cleaning. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a small-flow water meter detection device that is anti-deposition so as to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. A cleaning tube is installed at one end of the detection tube. The wall scraper assembly is pushed into the interior of the detection tube by the translation assembly. The wall scraper assembly rotates to clean the inner wall of the detection tube, cleans the attached scale and pushes it into the cleaning tube during the return process, so that the scale can be conveniently sent out through the spacing space between the inner tube and the cleaning tube, thereby saving costs and facilitating the cleaning of the inside of the detection tube.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a small-flow water meter detection device for preventing deposition, comprising a detection tube, a flow detection meter is fixedly installed on the top outer wall of the detection tube, and a display screen is installed on the upper end of the flow detection meter, electrodes are installed on the upper and lower ends of the inner wall of the detection tube, a cleaning tube is fixed at one end of the detection tube, and the inner diameter of the cleaning tube is larger than that of the detection tube, an inner tube is arranged inside the cleaning tube, and the outer diameter of the inner tube is smaller than the inner diameter of the detection tube, a wall scraping assembly is arranged on the outer surface of the inner tube, the wall scraping assembly comprises a connecting plate, connecting plates are slidably installed on both sides of the outer wall of the inner tube, and scrapers are fixed on the surface of the connecting plate, a translation assembly is arranged on the top inner wall of the cleaning tube, and the translation assembly comprises a screw, the screw is installed at the upper end of the cleaning tube, a mounting plate is threadedly sleeved on the surface of the screw, the mounting plate drives the inner tube to translate, and the outer ends of the detection tube and the cleaning tube are fixed with conveying pipes through flanges and bolts.

[0006] Furthermore, an inner end baffle is fixed to one end of the inner tube facing the detection tube, and the inner diameter and outer diameter of the inner end baffle are respectively the same as the outer diameter of the inner tube and the inner diameter of the detection tube, an outer end baffle is fixed to the other end of the inner tube, and the outer end baffle slides along the inner wall of the cleaning tube, the mounting plate is fixedly connected to the top of the outer end baffle, a connecting plate is fixed to the outer end of the cleaning tube, and an electromagnet is arranged on the surface where the connecting plate contacts the outer end baffle.

[0007] Furthermore, the translation assembly also includes a moving layer, the upper end of the cleaning tube is provided with the moving layer, and the screw is rotatably installed inside the moving layer through a bearing, a first motor is fixed to the outer end of the moving layer, and the output end of the first motor is fixedly connected to the screw.

[0008] Furthermore, the scraper assembly also includes a gear ring, and a gear ring is rotatably mounted on the outer wall of the inner tube near the outer end baffle through a bearing, a gear is meshed and connected to the top of the gear ring, and one end of the connecting plate is fixedly connected to the gear ring.

[0009] Furthermore, a second motor is fixed to a side of the mounting plate facing the gear, and an output end of the second motor is fixedly connected to the gear.

[0010] Furthermore, two convex rings are symmetrically fixed on the outer wall of the inner tube, and the connecting plate is slidably sleeved on the surface of the convex rings, and the scraper is in sliding contact with the inner wall of the detection tube.

[0011] Furthermore, a rubber sleeve is provided on the outer side of the inner tube at positions corresponding to the two electrodes, an opening is provided on one side of the rubber sleeve, and the rubber sleeve is wrapped around the outer surface of the electrode.

[0012] Furthermore, a rotating piece is rotatably mounted at a position where the scraper and the electrode are in the same straight line through hinges and a torsion spring, and the rotating piece is in sliding contact with the inner wall of the detection tube.

[0013] Furthermore, a sliding frame is fixed on the back of the rubber sleeve, a circular ring coaxial with the inner tube is fixed on the surface of the two scrapers, and one end of the sliding frame is slidably sleeved on the circular ring, and the scrapers are provided with movable notches at positions corresponding to the circular ring and the sliding frame.

[0014] Furthermore, a sealing door is installed at the bottom of the cleaning pipe through hinges and bolts.

[0015] Beneficial effects of the present invention:

[0016] 1. In the present invention, when the inner tube returns to the inside of the cleaning tube, the scale is pushed into between the cleaning tube and the inner tube through the rear end baffle, and the outer end baffle seals the outer ends of the cleaning tube and the inner tube. After opening the sealing door, the scale can be taken out without affecting the sealing inside the pipeline.

[0017] 2. In the present invention, when the scraper rotates, the circular ring also rotates synchronously, and the sliding frame slides along the circular ring. When the scraper moves to the rubber sleeve position, the rotating piece located on the same straight line is squeezed by the rubber sleeve and then rotates and is sent out from the bottom of the rubber sleeve. In this process, the sliding frame connecting the circular ring and the rubber sleeve passes through the moving gap to avoid movement interference.

[0018] 3. The present invention provides a rotating sheet. When the scraper moves to the electrode position, the rotating sheet squeezes the rubber sleeve. The rubber sleeve protects the electrode to avoid collision and damage to the electrode. At the same time, the rotating sheet rotates and is misaligned with the rubber sleeve to avoid affecting the rotation of the scraper to scrape the wall.

[0019] 4. The present invention drives the gear to rotate through the second motor, the gear meshes with the gear ring, the gear ring drives the two sets of connecting plates to slide along the convex ring, and the scraper rotates along the inside of the detection tube to clean the scale on the inner wall of the detection tube. The cleaned scale is located in the gap between the inner wall of the detection tube and the outer wall of the inner tube.

[0020] 5. The present invention drives the screw to rotate by a first motor, and the threads of the mounting plate and the screw cooperate to move horizontally along the moving layer, driving the inner tube and the scraper assembly to be sent into or out of the detection tube. After the inner tube is sent into the detection tube, the gap between the inner wall of the detection tube and the outer wall of the inner tube is blocked by the inner baffle plate and the outer baffle plate at the front and rear ends respectively, and the scraped scale is collected. Then, the inner tube is sent out by rotating in the direction of the screw. During the sending process, the inner baffle plate pushes the scale into the space between the outer wall of the inner tube and the inner wall of the cleaning tube. At the same time, the outer baffle plate contacts the outermost connecting disk of the cleaning tube, and the inner tube and the cleaning tube are sealed by the electromagnet on the inner side of the connecting disk, so that the scale inside the cleaning tube can be removed conveniently without disassembling the pipeline.

[0021] 6. Compared with the prior art, the present invention installs a cleaning tube at one end of the detection tube, and the wall scraper assembly is pushed into the detection tube by the translation assembly. The wall scraper assembly rotates to clean the inner wall of the detection tube, cleans the attached scale and pushes it into the cleaning tube during the return process, so that the scale can be sent out through the spacing space between the inner tube and the cleaning tube, saving costs and facilitating the cleaning of the inside of the detection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a small flow water meter detection device for preventing deposition according to the present invention;

[0023] Figure 2 A schematic diagram of an anti-deposition small flow water meter detection device of the present invention with a sealed door opened;

[0024] Figure 3 It is a schematic diagram of the separation of the detection tube and the cleaning tube of an anti-deposition small flow water meter detection device of the present invention;

[0025] Figure 4 A schematic diagram of the internal structure of a detection tube of an anti-deposition small flow water meter detection device of the present invention;

[0026] Figure 5 It is a schematic diagram of the connection between the wall scraping component and the translation component of an anti-deposition small flow water meter detection device of the present invention;

[0027] Figure 6 It is a schematic structural diagram of a wall scraping component of a small flow water meter detection device for preventing deposition according to the present invention;

[0028] Figure 7 This is a schematic diagram of the connection between a rubber sleeve and a circular ring of an anti-deposition small-flow water meter detection device of the present invention.

[0029] In the figure: 1. detection tube; 11. flow meter; 12. display screen; 13. electrode; 2. cleaning tube; 21. sealing door; 22. inner tube; 23. outer baffle; 24. connecting plate; 25. inner baffle; 3. conveying pipe; 4. translation assembly; 41. first motor; 42. moving layer; 43. screw; 44. mounting plate; 5. scraper assembly; 51. gear ring; 52. second motor; 53. gear; 54. convex ring; 55. connecting plate; 56. scraper; 561. rotating plate; 562. moving notch; 57. ring; 58. rubber sleeve; 59. sliding frame. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 7The present invention provides a technical solution: a small flow water meter detection device for preventing deposition, comprising a detection tube 1, a flow detector 11 is fixedly installed on the top outer wall of the detection tube 1, and a display screen 12 is installed on the upper end of the flow detector 11, electrodes 13 are installed on the upper and lower ends of the inner wall of the detection tube 1, a cleaning tube 2 is fixed at one end of the detection tube 1, and the inner diameter of the cleaning tube 2 is larger than that of the detection tube 1, an inner tube 22 is arranged inside the cleaning tube 2, and the outer diameter of the inner tube 22 is smaller than that of the detection tube 1 The inner diameter of the inner tube 22 is provided with a scraper assembly 5 on the outer surface of the inner tube 22, and the scraper assembly 5 includes a connecting plate 55. Connecting plates 55 are slidably installed on both sides of the outer wall of the inner tube 22, and scrapers 56 are fixed on the surface of the connecting plate 55. A translation assembly 4 is provided on the top inner wall of the cleaning tube 2, and the translation assembly 4 includes a screw rod 43, and the screw rod 43 is installed on the upper end of the cleaning tube 2. A mounting plate 44 is threadedly sleeved on the surface of the screw rod 43, and the mounting plate 44 drives the inner tube 22 to translate. The outer ends of the measuring tube 1 and the cleaning tube 2 are fixedly installed with the conveying tube 3 through flanges and bolts. The flow meter 11, the display screen 12 and the electrode 13 in this scheme are used as follows: the electromagnetic flowmeter electrifies the fluid through the electrode 13. After the fluid is electrified, the fluid generates a magnetic field. When the fluid passes through the measuring tube 1, it causes the magnetic field in the electromagnetic flowmeter to change. The electromagnetic flowmeter converts the magnetic field change into a current signal, and converts the current signal into a numerical value displayed on the display screen 12. When using the device, the outer ends of the measuring tube 1 and the cleaning tube 2 are fixedly connected to the conveying tube 3 through flanges and bolts, and a small flow of water is detected by the flow meter 11 and the electrode 13 of the measuring tube 1. After a period of use, the inner tube 22 and the scraper assembly 5 are sent into the measuring tube 1 through the translation assembly 4, and the inner wall of the measuring tube 1 is cleaned by the scraper assembly 5, and the cleaned scale is sent into the cleaning tube 2, and then sent out through the cleaning tube 2, so as to keep the flow detection accuracy and water flow in the measuring tube 1 from being affected by scale deposition.

[0032] In this embodiment, an inner end baffle 25 is fixed to one end of the inner tube 22 facing the detection tube 1, and the inner diameter and outer diameter of the inner end baffle 25 are respectively the same as the outer diameter of the inner tube 22 and the inner diameter of the detection tube 1, and an outer end baffle 23 is fixed to the other end of the inner tube 22, and the outer end baffle 23 slides along the inner wall of the cleaning tube 2, the mounting plate 44 is fixedly connected to the top of the outer end baffle 23, the outer end of the cleaning tube 2 is fixed with a connecting disk 24, and an electromagnet is provided on the surface of the connecting plate 55 in contact with the outer end baffle 23, the translation assembly 4 also includes a moving layer 42, the upper end of the cleaning tube 2 is provided with the moving layer 42, and the screw 43 is rotatably installed inside the moving layer 42 through a bearing, the outer end of the moving layer 42 is fixed with a first motor 41, and the output end of the first motor 41 is fixedly connected to the screw 43, and the opening The first motor 41 is started to drive the screw 43 to rotate, and the threaded cooperation of the mounting plate 44 and the screw 43 moves horizontally along the moving layer 42, driving the inner tube 22 and the scraper assembly 5 to be sent into or out of the detection tube 1. After the inner tube 22 is sent into the detection tube 1, the front and rear ends of the gap between the inner wall of the detection tube 1 and the outer wall of the inner tube 22 are blocked by the inner end baffle 25 and the outer end baffle 23 respectively, and the scraped scale is collected, and then the inner tube 22 is sent out by rotating in the direction of the screw 43. During the sending process, the inner end baffle 25 pushes the scale into the space between the outer wall of the inner tube 22 and the inner wall of the cleaning tube 2. At the same time, the outer end baffle 23 contacts the outermost connecting disk 24 of the cleaning tube 2, and the inner tube 22 and the cleaning tube 2 are sealed by the electromagnet inside the connecting disk 24, so that the scale inside the cleaning tube 2 can be removed conveniently without disassembling the pipeline.

[0033] In this embodiment, the scraper assembly 5 also includes a gear ring 51. The gear ring 51 is rotatably mounted on the outer wall of the inner tube 22 near the outer end baffle 23 through a bearing. The top of the gear ring 51 is meshed and connected with a gear 53. One end of the connecting plate 55 is fixedly connected to the gear ring 51. A second motor 52 is fixedly mounted on the side of the mounting plate 44 facing the gear 53, and the output end of the second motor 52 is fixedly connected to the gear 53. Two convex rings 54 are symmetrically fixed on the outer wall of the inner tube 22, and the connecting plate 55 is fixedly connected to the gear ring 51. The plate 55 is slidably sleeved on the surface of the convex ring 54, and the scraper 56 is in sliding contact with the inner wall of the detection tube 1. After the inner tube 22 moves into the inside of the detection tube 1, the second motor 52 is turned on to drive the gear 53 to rotate, and the gear 53 is meshed with the ring gear 51. The ring gear 51 drives the two sets of connecting plates 55 to slide along the convex ring 54, and the scraper 56 circulates along the inside of the detection tube 1 to clean the scale on the inner wall of the detection tube 1. The cleaned scale is located in the gap between the inner wall of the detection tube 1 and the outer wall of the inner tube 22.

[0034] In this embodiment, a rubber sleeve 58 is provided at the position of the two electrodes 13 on the outside of the inner tube 22, one side of the rubber sleeve 58 is provided with an opening, and the rubber sleeve 58 is wrapped around the outer surface of the electrode 13, and a rotating piece 561 is rotatably installed at a position where the scraper 56 is in the same straight line as the electrode 13 through a hinge and a torsion spring, and the rotating piece 561 is in sliding contact with the inner wall of the detection tube 1, and a sliding frame 59 is fixed to the back of the rubber sleeve 58, and a circular ring 57 coaxial with the inner tube 22 is fixed on the surface of the two scrapers 56, and one end of the sliding frame 59 is slidably sleeved on the circular ring 57, and a movable notch 562 is opened on the scraper 56 at the position corresponding to the circular ring 57 and the sliding frame 59, and an opening is provided on the side of the rubber sleeve 58 where the rubber sleeve 58 enters the detection tube 1 from the cleaning tube 2, and the rubber sleeve 58 has a certain elasticity and can be wrapped around the periphery of the electrode 13. The back of the rubber sleeve 58 is slidably connected to the circular ring 57 through the sliding frame 59, and the circular ring 57 is fixedly connected to the scrapers 56 on both sides. When the scraper 56 rotates, the circular ring 57 also rotates synchronously, and the sliding frame 59 slides along the circular ring 57. When the scraper 56 moves to the position of the rubber sleeve 58, the rotating piece 561 located on the same straight line is squeezed by the rubber sleeve 58 and then rotates, and is sent out from the bottom of the rubber sleeve 58. In this process, the sliding frame 59 connecting the circular ring 57 and the rubber sleeve 58 passes through the moving gap 562 to avoid movement interference. Through the setting of the rotating piece 561, when the scraper 56 moves to the position of the electrode 13, the rotating piece 561 squeezes the rubber sleeve 58, and the rubber sleeve 58 protects the electrode 13 to avoid collision and damage to the electrode 13. At the same time, the rotating piece 561 rotates and is misaligned with the rubber sleeve 58 to avoid affecting the rotation of the scraper 56 to scrape the wall.

[0035] In this embodiment, a sealing door 21 is installed at the bottom of the cleaning tube 2 through hinges and bolts. The sealing door 21 at the bottom of the cleaning tube 2 can be opened by manually removing the bolts. When the inner tube 22 returns to the inside of the cleaning tube 2, the scale is pushed into between the cleaning tube 2 and the inner tube 22 through the rear end baffle. The outer end baffle 23 seals the outer ends of the cleaning tube 2 and the inner tube 22. After opening the sealing door 21, the scale can be removed without affecting the sealing inside the pipeline.

[0036] When using the device, the outer ends of the detection tube 1 and the cleaning tube 2 are fixedly connected to the delivery tube 3 through flanges and bolts, and the small flow of water is detected through the flow meter 11 and the electrode 13 of the detection tube 1. After using it for a period of time, the first motor 41 is turned on to drive the screw 43 to rotate, and the threaded joints of the mounting plate 44 and the screw 43 move horizontally along the moving layer 42, driving the inner tube 22 and the scraping assembly 5 to be sent into or out of the detection tube 1. After the inner tube 22 is sent into the detection tube 1, the inner wall of the detection tube 1 and the inner tube 22 are The front and rear ends of the gap of the outer wall are blocked by the inner end baffle 25 and the outer end baffle 23 respectively, and the scraped scale is collected. The second motor 52 is turned on to drive the gear 53 to rotate, and the gear 53 is meshed with the ring gear 51. The ring gear 51 drives the two sets of connecting plates 55 to slide along the convex ring 54, and the scraper 56 rotates along the inside of the detection tube 1 to clean the scale on the inner wall of the detection tube 1. The cleaned scale is located between the inner wall of the detection tube 1 and the gap between the outer wall of the inner tube 22. When the scraper 56 rotates, the ring 57 also rotates synchronously. The sliding frame 59 slides along the circular ring 57. When the scraper 56 moves to the position of the rubber sleeve 58, the rotating piece 561 located on the same straight line is squeezed by the rubber sleeve 58 and then rotates, and is sent out from the bottom of the rubber sleeve 58. In this process, the sliding frame 59 connecting the circular ring 57 and the rubber sleeve 58 passes through the moving gap 562 to avoid movement interference. By setting the rotating piece 561, when the scraper 56 moves to the position of the electrode 13, the rotating piece 561 squeezes the rubber sleeve 58, and the rubber sleeve 58 moves to the electrode 13. The inner tube 22 is then sent out by rotating the screw 43. During the sending process, the inner baffle 25 pushes the scale into the space between the outer wall of the inner tube 22 and the inner wall of the cleaning tube 2. At the same time, the outer baffle 23 contacts the connecting disk 24 at the outermost end of the cleaning tube 2. The inner tube 22 and the cleaning tube 2 are sealed by opening the electromagnet on the inner side of the connecting disk 24. After opening the sealing door 21, the scale can be taken out to keep the flow detection accuracy and water flow inside the detection tube 1 unaffected by the deposition of scale.

[0037] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A low-flow water meter detection device for preventing deposition, comprising a detection tube (1), characterized in that: A flow meter (11) is fixedly mounted on the top outer wall of the detection tube (1), and a display screen (12) is mounted on the upper end of the flow meter (11). Electrodes (13) are mounted on the upper and lower ends of the inner wall of the detection tube (1). A cleaning tube (2) is fixed to one end of the detection tube (1), and the inner diameter of the cleaning tube (2) is larger than that of the detection tube (1). An inner tube (22) is arranged inside the cleaning tube (2), and the outer diameter of the inner tube (22) is smaller than the inner diameter of the detection tube (1). A wall scraping assembly (5) is arranged on the outer surface of the inner tube (22), and the wall scraping assembly (5) comprises a connecting plate (55). The connecting plates (55) are slidably mounted on both sides of the outer wall of the inner tube (22), and scrapers ( 56), a translation assembly (4) is provided on the top inner wall of the cleaning tube (2), and the translation assembly (4) includes a screw (43), the screw (43) is mounted on the upper end of the cleaning tube (2), a mounting plate (44) is threadedly sleeved on the surface of the screw (43), and the mounting plate (44) drives the inner tube (22) to translate, the outer ends of the detection tube (1) and the cleaning tube (2) are both fixedly mounted with a conveying tube (3) via flanges and bolts, an inner end baffle (25) is fixed to one end of the inner tube (22) facing the detection tube (1), and the inner diameter and outer diameter of the inner end baffle (25) are respectively the same as the outer diameter of the inner tube (22) and the inner diameter of the detection tube (1), and the other end of the inner tube (22) is fixed to an outer end baffle (23), and the outer end The baffle (23) slides along the inner wall of the cleaning tube (2); the mounting plate (44) is fixedly connected to the top of the outer end baffle (23); a connecting plate (24) is fixedly provided at the outer end of the cleaning tube (2); and an electromagnet is provided on the surface of the connecting plate (55) in contact with the outer end baffle (23); the translation assembly (4) further comprises a moving layer (42); the moving layer (42) is provided at the upper end of the cleaning tube (2); and the screw (43) is rotatably mounted inside the moving layer (42) via a bearing; a first motor (41) is fixedly provided at the outer end of the moving layer (42); and an output end of the first motor (41) is fixedly connected to the screw (43); the wall scraping assembly (5) further comprises a gear ring (51); the inner tube (22) is close to the outer end baffle (2 A gear ring (51) is rotatably mounted on the outer wall of one side of the inner tube (3) via a bearing, a gear (53) is meshedly connected to the top of the gear ring (51), one end of the connecting plate (55) is fixedly connected to the gear ring (51), a second motor (52) is fixedly mounted on the side of the mounting plate (44) facing the gear (53), and the output end of the second motor (52) is fixedly connected to the gear (53), two convex rings (54) are symmetrically fixed on the outer wall of the inner tube (22), and the connecting plate (55) is slidably sleeved on the surface of the convex ring (54), the scraper (56) is in sliding contact with the inner wall of the detection tube (1), a rubber sleeve (58) is provided on the outer side of the inner tube (22) at positions corresponding to the two electrodes (13), and an opening is provided on one side of the rubber sleeve (58),The rubber sleeve (58) is wrapped around the outer surface of the electrode (13); a rotating piece (561) is rotatably mounted on the scraper (56) at a position in the same straight line as the electrode (13) through a hinge and a torsion spring; the rotating piece (561) is in sliding contact with the inner wall of the detection tube (1); a sliding frame (59) is fixed on the back of the rubber sleeve (58); a circular ring (57) coaxial with the inner tube (22) is fixed on the surface of the two scrapers (56); one end of the sliding frame (59) is slidably sleeved on the circular ring (57); the scraper (56) is The scraper (56) is provided with a moving notch (562) at a position corresponding to the circular ring (57) and the slide frame (59). When the scraper (56) rotates, the circular ring (57) also rotates synchronously, and the slide frame (59) slides along the circular ring (57). When the scraper (56) moves to the position of the rubber sleeve (58), the rotating piece (561) located on the same straight line is squeezed by the rubber sleeve (58) and rotates, and is sent out from the bottom of the rubber sleeve (58). The slide frame (59) connecting the circular ring (57) and the rubber sleeve (58) passes through the moving notch (562).

2. The anti-deposition small flow water meter detection device according to claim 1, characterized in that: A sealing door (21) is installed at the bottom of the cleaning pipe (2) through hinges and bolts.

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