A flow meter suitable for sewage detection

Abstract

The present invention discloses a flow meter suitable for sewage detection in the field of flow testing, comprising a mounting tube, a mounting box fixedly connected to the top of the mounting tube, a flow meter penetrating and slidably connected to the top of the mounting box, an injection box pipe mouth spraying cleaning liquid toward the flow meter to flush out stains on the surface of the flow meter, and at the same time, an air jet pipe intermittently blows air toward the surface of the flow meter to blow away the stains on the surface of the flow meter, thereby accelerating the flow rate of the stains on the surface of the flow meter and also accelerating the volatilization time of the cleaning liquid, thereby ensuring the cleanliness of the surface of the flow meter and increasing the service life of the flow meter. The cleaning device can automatically clean the flow meter, and the staff does not need to frequently disassemble the flow meter for cleaning, but only needs to regularly replenish the cleaning in the storage box, which is simple to operate and reduces maintenance costs.

Description

Technical Field

[0001] The invention discloses a flow meter suitable for sewage detection in the field of flow testing. Background Art

[0002] To monitor the status of the fluid in a pipeline, various flow meters, including paddlewheel flow meters, volumetric flow meters, and turbine flow meters, include a rotating structure with a magnetic component, a sensor, and a processing circuit. The rotating structure is installed in the pipeline, and the sensor and the rotating structure are separated by a distance. When the fluid drives the rotating structure, the magnetic field strength around the magnetic component undergoes periodic changes. The sensor senses the change in magnetic field strength and generates a pulsed sensing signal. The processing circuit generates flow rate based on the pulsed sensing signal.

[0003] In the prior art, when detecting sewage, since sewage contains corrosive substances, the flow meter will be corroded if it works in such an environment for a long time, which will reduce the detection accuracy and seriously affect the service life of the flow meter.

[0004] Based on this, the present invention designs a flow meter suitable for sewage detection to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a flow meter suitable for sewage detection, so as to solve the problem raised in the above background technology that when detecting sewage, due to the corrosiveness contained in the sewage, the flow meter will be corroded if it works in such an environment for a long time, thereby reducing the detection accuracy and seriously affecting the service life of the flow meter.

[0006] The top end of the piston rod of the piston rod is fixedly connected with the piston rod of the piston rod, and the piston rod of the piston rod is fixedly connected with the piston rod of the piston rod. The top end of the first rack is fixedly connected to the pushing plate, the top of the pushing plate is fixedly connected to the bottom of the flowmeter, the pushing plate is fixedly connected to the second rack at one end away from the first rack, and the side surface of the second rack is meshed with the second gear. The right end of the third slide bar is fixedly connected to the turntable, and the right end of the second slide bar passes through the installation box and is rotatably connected to the installation box. The right end of the turntable is fixedly connected to the L-shaped pushing block distributed in an array, and the installation box is fixedly connected to the spray tank. The spray tank is slidably connected to the second piston, the right end of the second piston is fixedly connected to the third slide bar, and the second piston and the inner wall of the spray tank are jointly fixedly connected to the first return spring, the third slide bar passes through the spray tank and is slidably connected to the spray tank. The left end of the spray tank is fixedly connected to the injection pipe, and the injection pipe passes through the right wall of the installation box and is fixedly connected to the installation box.

[0007] During operation, in the prior art, when detecting sewage, since the sewage contains corrosive substances, the flow meter will be corroded if it works in such an environment for a long time, which will reduce the detection accuracy and seriously affect the service life of the flow meter. By setting a cylinder, when the telescopic rod of the cylinder moves downward, the sealing mechanism is opened, and the flow meter enters the installation pipe through the through hole to detect the sewage, and at the same time, the push plate moves downward to drive the first rack and the second rack to move downward. Through the mutual meshing action of the first rack and the second rack and the first gear and the second gear, the first gear and the second gear start to rotate, and the first gear The threaded rod rotates, and the connecting plate drives the first slide bar to move to the left together through the thread action, and the first piston moves to the left. Through the action of the first one-way valve and the second one-way valve, the cleaning liquid in the storage box is sucked into the injection box. The second gear rotates, and the second slide bar rotates, and drives the turntable to rotate, so that the L-shaped push block rotates and pushes the push frame, so that the push frame moves to the left, and drives the third slide bar and the second piston to move to the left. The second return spring is compressed. When the L-shaped push block is separated from the push frame, under the action of the first return spring, the second piston and the third slide bar are reset, so that the injection pipe can intermittently face the flow. The meter jets air to blow away the dust and debris on the surface of the flow meter to keep the flow meter clean and tidy. When the inspection is completed, the telescopic rod of the cylinder moves upward, the flow meter moves upward, and the sealing mechanism is closed to prevent sewage from entering the installation box and polluting the equipment. At the same time, under the same working condition as above, the threaded rod rotates in the opposite direction, the connecting plate moves to the right, and drives the first piston of the first slide rod to move to the right. Under the action of the first one-way valve and the second one-way valve, the nozzle of the injection box sprays cleaning liquid towards the flow meter to flush the stains on the surface of the flow meter. At the same time, the jet pipe intermittently blows air towards the surface of the flow meter to blow away the stains on the surface of the flow meter. When the flow is accelerated The cleaning equipment can automatically clean the flow meter, and the staff does not need to frequently disassemble the flow meter for cleaning. They only need to regularly replenish the cleaning liquid in the storage box. The operation is simple, and the maintenance cost is reduced. It solves the problem in the prior art that when detecting sewage, the flow meter will be corroded if it works in such an environment for a long time due to the corrosiveness in the sewage, which reduces the detection accuracy and seriously affects the service life of the flow meter.

[0008] The top end of the second rotating shaft is fixedly connected to the first belt conveyor, and the other end of the first belt conveyor is slidably connected to the second rotating shaft. The bottom end of the second rotating shaft is rotatably connected to the bottom end of the inner side wall of the installation box, the top end of the second rotating shaft is slidably connected to the second belt, and the other end of the second belt is slidably connected to the third rotating shaft. The bottom end of the third rotating shaft is rotatably connected to the top end of the slide, and the top end of the third rotating shaft is fixed with a toggle leaf, and the toggle leaf is just to the right of the nozzle of the injection box; when working, due to the spraying When the cleaning liquid is injected, it is injected on one side, and the back of the flow meter is not injected, resulting in unclean cleaning, reduced cleaning effect, and shortened service life of the flow meter. By setting a cleaning mechanism, when the injection box starts to spray, the high-pressure water flow drives the toggle blade to rotate the third shaft, and the second shaft is rotated by the transmission action of the second belt. The cleaning rod is rotated by the transmission action of the first belt, and the surface of the flow meter is cleaned, thereby expanding the cleaning range, avoiding cleaning dead corners, and improving the cleaning effect. In addition, the provided slide and slide groove can facilitate manual replacement and cleaning of stains on the surface of the cleaning rod and the slide, ensuring the cleanliness of the equipment, and solving the problem that the back of the flow meter is not injected on one side when the cleaning liquid is injected, resulting in unclean cleaning, reduced cleaning effect, and shortened service life of the flow meter.

[0009] As a further solution of the present invention, the first one-way valve includes a first fixed block, the first fixed block is fixedly connected to the inner wall of the installation box, the right end of the first fixed block is fixedly connected to the first rotating rod, the two ends of the first rotating rod are symmetrically rotatably connected to the first rotating blocks, the surface of the first rotating rod is sleeved with a first torsion spring, the right ends of the two first rotating blocks are commonly fixedly connected to a first sealing block, and the first sealing block seals the pipe mouth of the injection box; during operation, when the injection box absorbs cleaning fluid, under the action of suction, the first sealing block seals the pipe mouth of the injection box, and the cleaning fluid is able to enter the injection box; when the injection box injects cleaning fluid, under the action of high-pressure water flow, the first sealing block flips upward, the first torsion spring is compressed, the cleaning fluid is released, and the flow meter is cleaned. After cleaning, under the action of the first torsion spring, the first sealing block is reset and the pipe mouth of the injection box is sealed again, ensuring that the working state of cleaning fluid absorption and injection can be carried out stably.

[0010] As a further solution of the present invention, the second one-way valve includes a connecting rod, the top end of the connecting rod is fixedly connected to the top end of the inner wall of the injection box, the surface of the connecting rod is slidably connected to a second sealing block, the second sealing block is sealed at the pipe mouth of the storage box, and the surface of the connecting rod is sleeved with a second return spring; during operation, when the injection box absorbs cleaning liquid, under the action of suction, the second sealing block moves downward and disengages from the pipe mouth of the storage box, the second return spring is compressed, and the cleaning liquid is able to enter the injection box, and when the injection box injects cleaning liquid, under the combined action of pressure and the second return spring, the second sealing block will move upward and re-seal the pipe mouth of the storage box, the cleaning liquid is released from the pipe mouth of the injection box, and the flow meter is cleaned, ensuring the working state of the absorption and injection of the cleaning liquid.

[0011] As a further solution of the present invention, the sealing mechanism includes two second fixed blocks, which are fixedly connected to the inner wall of the mounting tube, and the two second fixed blocks are commonly fixedly connected to a second rotating rod, and the second rotating block is rotatably connected to the surface of the second rotating rod, and a third sealing block is fixedly connected to the left side of the second rotating block, and a second torsion spring is sleeved on the surface of the second rotating rod; during operation, when the flowmeter moves clockwise, the third sealing block is squeezed by the flowmeter to cause the third sealing block to flip over, the second torsion spring is compressed, the through hole is opened, and the flowmeter enters the mounting tube to detect sewage. When the flowmeter moves upward, under the action of the second torsion spring, the third sealing block is reset and the through hole is re-sealed to prevent sewage from flowing into the mounting box and contaminating the equipment, thereby ensuring the cleanliness of the mounting box.

[0012] As a further solution of the present invention, flanges are symmetrically fixedly connected at both ends of the installation pipe; during operation, the sewage pipe is connected and installed through the flanges, which is convenient for installation and disassembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention uses the L-shaped pushing block and pushing frame of the storage box injection box spray tank turntable. When the detection is completed, the telescopic rod of the cylinder moves upward, the flow meter moves upward, and the sealing mechanism is closed to prevent sewage from entering the installation box and polluting the equipment. At the same time, under the same working state as mentioned above, the threaded rod rotates in the opposite direction, the connecting plate moves to the right, and drives the first piston of the first slide bar to move to the right. Under the action of the first one-way valve and the second one-way valve, the injection box pipe mouth sprays cleaning liquid toward the flow meter to flush out the stains on the surface of the flow meter. At the same time, the jet pipe intermittently blows air toward the surface of the flow meter to blow away the stains on the surface of the flow meter. While accelerating the flow speed of the stains on the surface of the flow meter, it also accelerates the evaporation time of the cleaning liquid, ensures the cleanliness of the surface of the flow meter, and improves the service life of the flow meter. The cleaning device can automatically clean the flow meter. The staff does not need to frequently disassemble the flow meter for cleaning. They only need to regularly replenish the cleaning in the storage box. The operation is simple and the maintenance cost is reduced.

[0015] The present invention uses a cleaning mechanism. When the injection box starts to spray, the high-pressure water flow drives the paddle to rotate the third shaft, and the transmission action of the second belt causes the second shaft to rotate. The transmission action of the first belt causes the cleaning rod to rotate and clean the surface of the flow meter, thereby expanding the cleaning range, avoiding cleaning dead corners, and improving the cleaning effect. In addition, the provided slide and slide groove can be easily replaced and cleaned manually to ensure the cleanliness of the equipment, and solve the problem that the back of the flow meter is not sprayed on the one side when the cleaning liquid is sprayed, resulting in incomplete cleaning, reduced cleaning effect, and shortened service life of the flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a first schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a second schematic diagram of the overall structure of the present invention;

[0019] Figure 3 This is a first cross-sectional view of the installation box of the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a second cross-sectional view of the installation box of the present invention;

[0022] Figure 6 Ask about the cross-sectional view of the injection box in the present invention;

[0023] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0024] Figure 8 It is a cross-sectional view of the jet tank in the present invention;

[0025] Figure 9 is a cross-sectional view of the installation pipe in the present invention;

[0026] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0027] Figure 11 This is a diagram showing the connection of the cleaning mechanism in the present invention;

[0028] Figure 12 for Figure 11 Enlarged view of point D in the middle;

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] Mounting tube 1, mounting box 2, flowmeter 3, through hole 4, auxiliary through hole 5, cylinder 6, storage box 7, injection box 8, first piston 9, first slide bar 10, connecting plate 11, threaded rod 12, first gear 13, first rack 14, push plate 15, second rack 16, second gear 17, second slide bar 18, turntable 19, L-shaped push block 20, spray tank 21, second piston 22, third slide bar 23, first return spring 24, spray tube 25, push frame 26, slide plate 2 7. Slide 28, first rotating shaft 29, cleaning rod 30, first belt 31, second rotating shaft 32, second belt 33, third rotating shaft 34, toggle leaf 35, first fixed block 36, first rotating rod 37, first rotating block 38, first torsion spring 39, first sealing block 40, connecting rod 41, second sealing block 42, second return spring 43, second fixed block 44, second rotating rod 45, second rotating block 46, third sealing block 47, second torsion spring 48, flange 49. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] See also Figure 1-12The present invention provides a technical solution: a flow meter 3 suitable for sewage detection, comprising a mounting pipe 1, a mounting box 2 fixedly connected to the top of the mounting pipe 1, a flow meter 3 passing through and slidably connected to the top of the mounting box 2, a through hole 4 being provided on the bottom of the inner side of the mounting box 2 and the mounting pipe 1, a sealing mechanism being provided on the through hole 4, a cylinder 6 being fixedly connected to the top of the mounting box 2, a storage box 7 being fixedly connected to the left end of the mounting box 2, an injection box 8 being fixedly connected to the bottom end of the storage box 7, a first active element being slidably connected to the injection box 8 Plug 9, the left side of the first piston 9 is fixedly connected to the first slide rod 10, the injection box 8 has a port provided with a first one-way valve, the storage box 7 is provided with a second one-way valve, the first slide rod 10 passes through the left side of the injection box 8 and is slidably connected, the left end of the first slide rod 10 is fixedly connected to the connecting plate 11, the top of the connecting plate 11 is threadedly connected to the threaded rod 12, the threaded rod 12 passes through the installation box 2 and is rotatably connected to the installation box 2, the right end of the threaded rod 12 is fixedly connected to the first gear 13, the side of the first gear 13 is meshed with the first rack 14, the top of the first rack 14 is fixed A push plate 15 is connected, the top of the push plate 15 is fixedly connected to the bottom of the flow meter 3, the end of the push plate 15 away from the first rack 14 is fixedly connected to the second rack 16, the side of the second rack 16 is engaged with a second gear 17, the right end is fixedly connected to a second slide bar 18, the right end of the second slide bar 18 passes through the installation box 2 and is rotatably connected to the installation box 2, the right end of the second slide bar 18 is fixedly connected to a turntable 19, the surface of the turntable 19 is fixedly connected to L-shaped push blocks 20 distributed in an array, a jet tank 21 is fixedly connected to the right side wall of the installation box 2, and the jet tank 2 1 is slidably connected to a second piston 22, the right end of the second piston 22 is fixedly connected to a third slide rod 23, the second piston 22 and the inner side wall of the spray tank 21 are fixedly connected to a first return spring 24, the third slide rod 23 passes through the spray tank 21 and is slidably connected to the spray tank 21, the left end of the spray tank 21 is fixedly connected to an injection pipe 25, the injection pipe 25 passes through the right side wall of the installation box 2 and is fixedly connected to the installation box 2, the right end of the third slide rod 23 is fixedly connected to a push frame 26 that cooperates with the L-shaped push block 20, and a cleaning mechanism is provided at the bottom end of the installation box 2;

[0033] During operation, in the prior art, for sewage detection, since sewage contains corrosive substances, the flow meter 3 will be corroded if it works in such an environment for a long time, which will reduce the detection accuracy and seriously affect the service life of the flow meter 3. By setting the cylinder 6, when the telescopic rod of the cylinder 6 moves downward, the sealing mechanism is opened, and the flow meter 3 enters the installation pipe 1 through the through hole 4 to detect the sewage, and at the same time, the push plate 15 moves downward to drive the first rack 14 and the second rack 16 to move downward. Through the mutual meshing action of the first rack 14 and the second rack 16 and the first gear 13 and the second gear 17, the first gear 13 and the second gear 17 start to rotate, and the first The gear 13 rotates the threaded rod 12, and the connecting plate 11 drives the first slide bar 10 to move to the left together through the threaded action. The first piston 9 moves to the left, and the cleaning liquid in the storage box 7 is sucked into the injection box 8 through the action of the first one-way valve and the second one-way valve. The second gear 17 rotates, causing the second slide bar 18 to rotate, and drives the turntable 19 to rotate, so that the L-shaped push block 20 rotates and pushes the push frame 26, so that the push frame 26 moves to the left, and drives the third slide bar 23 and the second piston 22 to move to the left. The second return spring 43 is compressed. When the L-shaped push block 20 is separated from the push frame 26, under the action of the first return spring 24, the second piston 22 and the third slide bar 23 After the cleaning is complete, the cleaning agent 25 is turned off, and the cleaning agent 25 is turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 is turned off, and the cleaning agent 25 is turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 is turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 is turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 can be turned off, and the cleaning agent 25 can be turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 can be turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 can be turned off, so that the cleaning agent 25 can be turned off, and the cleaning agent 25 can be turned off, The cleaning device can automatically clean the flow meter 3, and the staff does not need to frequently dismantle the flow meter 3 for cleaning. They only need to regularly replenish the cleaning liquid in the storage box 7. The operation is simple, and the maintenance cost is reduced. It solves the problem in the prior art that when detecting sewage, due to the corrosiveness in the sewage, the flow meter 3 works in such an environment for a long time, which will cause the flow meter 3 to be corroded, reduce the detection accuracy, and seriously affect the service life of the flow meter 3.

[0034] As a further solution of the present invention, the cleaning mechanism includes a slide plate 27, a slide groove 28 is provided on the outer wall of the installation box 2, the slide plate 27 is slidably connected to the inner bottom end surface of the installation box 2 and passes through the slide groove 28, the top of the slide plate 27 is provided with a secondary through hole 5, the secondary through hole 5 is connected to the through hole 4, the top of the slide plate 27 is symmetrically fixedly connected to a first rotating shaft 29, the top of the first rotating shaft 29 is fixedly connected to a cleaning stick 30, the bottom end of the first rotating shaft 29 is slidably connected to a first belt 31, the other end of the first belt 31 is slidably connected to a second rotating shaft 32, the bottom end of the second rotating shaft 32 is rotatably connected to the bottom end of the inner wall of the installation box 2, the top of the second rotating shaft 32 is slidably connected to a second belt 33, the other end of the second belt 33 is slidably connected to a third rotating shaft 34, the bottom end of the third rotating shaft 34 is rotatably connected to the top of the slide plate 27, the top of the third rotating shaft 34 is fixed with a toggle leaf 35, and the toggle leaf 35 is just to the right of the nozzle of the injection box 8; when working, due to the spray cleaning The cleaning rod 30 is rotated by the transmission action of the first belt 31, and the surface of the flow meter 3 is cleaned, thereby expanding the cleaning range, avoiding cleaning dead corners, and improving the cleaning effect. In addition, the slide plate 27 and the slide groove 28 are provided, which can facilitate manual replacement and cleaning of the stains on the surface of the cleaning rod 30 and the slide plate 27, thereby ensuring the cleanliness of the equipment and tidiness. This solves the problem that the back of the flow meter 3 is not sprayed due to the single-sided spraying when spraying the cleaning liquid, resulting in unclean cleaning, reduced cleaning effect, and reduced service life of the flow meter 3.

[0035] As a further solution of the present invention, the first one-way valve includes a first fixed block 36, which is fixedly connected to the inner wall of the installation box 2. The right end of the first fixed block 36 is fixedly connected to the first rotating rod 37. The two ends of the first rotating rod 37 are symmetrically rotatably connected to the first rotating blocks 38. The surface of the first rotating rod 37 is sleeved with a first torsion spring 39. The right ends of the two first rotating blocks 38 are commonly fixedly connected to a first sealing block 40, which seals the nozzle of the injection box 8. During operation, when the injection box 8 absorbs cleaning fluid, under the action of suction, the first sealing block 40 seals the nozzle of the injection box 8, allowing the cleaning fluid to enter the injection box 8. When the injection box 8 injects cleaning fluid, under the action of high-pressure water flow, the first sealing block 40 flips upward, the first torsion spring 39 is compressed, and the cleaning fluid is released to clean the flow meter 3. After cleaning, under the action of the first torsion spring 39, the first sealing block 40 is reset and the nozzle of the injection box 8 is sealed again, ensuring that the working state of cleaning fluid absorption and injection can be carried out stably.

[0036] As a further solution of the present invention, the second one-way valve includes a connecting rod 41, the top of the connecting rod 41 is fixedly connected to the top of the inner wall of the injection box 8, and the surface of the connecting rod 41 is slidably connected to a second sealing block 42, which is sealed at the pipe mouth of the storage box 7, and the surface of the connecting rod 41 is sleeved with a second return spring 43; during operation, when the injection box 8 absorbs the cleaning liquid, under the action of suction, the second sealing block 42 moves downward and disengages from the pipe mouth of the storage box 7, the second return spring 43 is compressed, and the cleaning liquid is able to enter the injection box 8, and when the injection box 8 injects the cleaning liquid, under the combined action of pressure and the second return spring 43, the second sealing block 42 will move upward and re-seal the pipe mouth of the storage box 7, and the cleaning liquid is released from the pipe mouth of the injection box 8, and the flow meter 3 is cleaned, ensuring the working state of the absorption and injection of the cleaning liquid.

[0037] As a further solution of the present invention, the sealing mechanism includes two second fixed blocks 44, which are fixedly connected to the inner wall of the mounting tube 1. The two second fixed blocks 44 are commonly fixedly connected to a second rotating rod 45, and the surface of the second rotating rod 45 is rotatably connected to a second rotating block 46. The left side of the second rotating block 46 is fixedly connected to a third sealing block 47, and the surface of the second rotating rod 45 is sleeved with a second torsion spring 48. During operation, when the flow meter 3 moves clockwise, the third sealing block 47 is squeezed by the flow meter 3 to cause the third sealing block 47 to flip over, the second torsion spring 48 is compressed, the through hole 4 is opened, and the flow meter 3 enters the mounting tube 1 to detect sewage. When the flow meter 3 moves upward, under the action of the second torsion spring 48, the third sealing block 47 is reset and the through hole 4 is re-sealed to prevent sewage from flowing into the mounting box 2 and contaminating the equipment, thereby ensuring the cleanliness of the mounting box 2.

[0038] As a further solution of the present invention, flanges 49 are symmetrically fixedly connected to both ends of the installation pipe 1; when working, the sewage pipe is connected and installed through the flanges 49, which is convenient for installation and disassembly.

[0039] Working principle: By setting the cylinder 6, when the telescopic rod of the cylinder 6 moves downward, the sealing mechanism is opened, and the flowmeter 3 enters the installation pipe 1 through the through hole 4 to detect the sewage, and at the same time, the push plate 15 moves downward to drive the first rack 14 and the second rack 16 to move downward. Under the mutual meshing action of the first rack 14 and the second rack 16 and the first gear 13 and the second gear 17, the first gear 13 and the second gear 17 start to rotate, and the first gear 13 causes the threaded rod 12 to rotate. Through the threaded action of the connecting plate 11, the first slide bar 10 is driven to move to the left together, and the first piston 9 moves to the left. Through the action of the first one-way valve and the second one-way valve, the cleaning liquid in the storage box 7 is sucked into the injection box 8. The rotation of the second gear 17 causes the second slide bar 18 to rotate, and drives the turntable 19 to rotate, so that the L-shaped push block 20 rotates and pushes the push frame 26, so that the push frame 26 moves to the left and drives the third slide bar 2 3 and the second piston 22 move to the left, the second return spring 43 is compressed, and when the L-shaped pushing block 20 disengages from the pushing frame 26, under the action of the first return spring 24, the second piston 22 and the third slide bar 23 are reset, so that the jet pipe 25 can intermittently spray towards the flow meter 3 to blow away the dust and debris on the surface of the flow meter 3 and keep the flow meter 3 clean and tidy. When the inspection is completed, the telescopic rod of the cylinder 6 moves upward, the flow meter 3 moves upward, and the sealing mechanism is closed to prevent sewage from entering the installation box 2 and polluting the equipment. At the same time, under the same working condition as above, the threaded rod 12 rotates in the opposite direction, the connecting plate 11 moves to the right, and drives the first piston 9 of the first slide bar 10 to move to the right. Under the action of the first one-way valve and the second one-way valve, the nozzle of the injection box 8 sprays cleaning fluid towards the flow meter 3 to flush the stains on the surface of the flow meter 3. At the same time, the jet pipe 25 intermittently blows air towards the surface of the flow meter 3 to blow away the stains on the surface of the flow meter 3.

[0040] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0041] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A flow meter suitable for sewage detection, comprising a mounting tube (1), wherein the top end of the mounting tube (1) is fixedly connected to a mounting box (2), characterized in that: The top of the installation box (2) is penetrated and slidably connected to a flow meter (3), the bottom of the inner side of the installation box (2) and the installation pipe (1) are both provided with a through hole (4), the through hole (4) is provided with a sealing mechanism, the top of the flow meter (3) is fixedly connected to a cylinder (6), the cylinder (6) is fixedly connected to the top of the installation box (2), the left end of the installation box (2) is fixedly connected to a storage box (7), the bottom end of the storage box (7) is fixedly connected to an injection box (8), the injection box (8) is slidably connected to a first piston (9), the left side of the first piston (9) is fixedly connected to a first slide rod (10), the injection box (8) has a port provided with A first one-way valve is provided in the storage box (7), the first slide rod (10) passes through the left side of the injection box (8) and is slidably connected, the left end of the first slide rod (10) is fixedly connected to a connecting plate (11), the top of the connecting plate (11) is threadedly connected to a threaded rod (12), the threaded rod (12) passes through the installation box (2) and is rotatably connected to the installation box (2), the right end of the threaded rod (12) is fixedly connected to a first gear (13), the side of the first gear (13) is meshed with a first rack (14), the top of the first rack (14) is fixedly connected to a push plate (15), the top of the push plate (15) is fixedly connected The push plate (15) is connected to the bottom end of the flow meter (3), and one end of the push plate (15) away from the first rack (14) is fixedly connected to the second rack (16), the side of the second rack (16) is meshed with a second gear (17), and the right end is fixedly connected to the second slide bar (18), the right end of the second slide bar (18) passes through the installation box (2) and is rotatably connected to the installation box (2), the right end of the second slide bar (18) is fixedly connected to the turntable (19), and the surface of the turntable (19) is fixedly connected to L-shaped push blocks (20) distributed in an array, and the right side wall of the installation box (2) is fixedly connected to a jet tank (21), and a second piston is slidably connected in the jet tank (21). (22), the right end of the second piston (22) is fixedly connected to the third slide bar (23), the second piston (22) and the inner wall of the jet tank (21) are fixedly connected to the first return spring (24), the third slide bar (23) passes through the jet tank (21) and is slidably connected to the jet tank (21), the left end of the jet tank (21) is fixedly connected to the jet pipe (25), the jet pipe (25) passes through the right side wall of the installation box (2) and is fixedly connected to the installation box (2), the right end of the third slide bar (23) is fixedly connected to the push frame (26) that cooperates with the L-shaped push block (20), and the bottom end of the installation box (2) is provided with a cleaning mechanism; The cleaning mechanism includes a slide plate (27), an outer wall of the installation box (2) is provided with a slide groove (28), the slide plate (27) is slidably connected to the inner bottom end surface of the installation box (2) and passes through the slide groove (28), a secondary through hole (5) is provided at the top of the slide plate (27), the secondary through hole (5) is connected to the through hole (4), the top of the slide plate (27) is symmetrically fixedly connected to a first rotating shaft (29), the top of the first rotating shaft (29) is fixedly connected to a cleaning stick (30), and the bottom of the first rotating shaft (29) is slidably connected to a first belt (31), The other end of the first belt (31) is slidably connected to a second rotating shaft (32), the bottom end of the second rotating shaft (32) is rotatably connected to the bottom end of the inner wall of the installation box (2), the top end of the second rotating shaft (32) is slidably connected to a second belt (33), the other end of the second belt (33) is slidably connected to a third rotating shaft (34), the bottom end of the third rotating shaft (34) is rotatably connected to the top end of the slide (27), and a toggle leaf (35) is fixed to the top end of the third rotating shaft (34), and the toggle leaf (35) is directly to the right of the nozzle of the injection box (8); The first one-way valve includes a first fixed block (36), the first fixed block (36) is fixedly connected to the inner wall of the installation box (2), the right end of the first fixed block (36) is fixedly connected to a first rotating rod (37), both ends of the first rotating rod (37) are symmetrically connected to the first rotating block (38), the surface of the first rotating rod (37) is sleeved with a first torsion spring (39), the right ends of the two first rotating blocks (38) are commonly fixedly connected to a first sealing block (40), and the first sealing block (40) is sealed at the pipe mouth of the injection box (8).

2. A flow meter suitable for sewage detection according to claim 1, characterized in that: The second one-way valve comprises a connecting rod (41), the top end of the connecting rod (41) is fixedly connected to the top end of the inner wall of the injection box (8), the surface of the connecting rod (41) is slidably connected to a second sealing block (42), the second sealing block (42) is sealed at the pipe mouth of the storage box (7), and the surface of the connecting rod (41) is sleeved with a second return spring (43).

3. The flow meter for sewage detection according to claim 1, characterized in that: The sealing mechanism comprises two second fixed blocks (44), the second fixed blocks (44) being fixedly connected to the inner side wall of the mounting tube (1), the two second fixed blocks (44) being fixedly connected to a second rotating rod (45), the surface of the second rotating rod (45) being rotatably connected to a second rotating block (46), the left side of the second rotating block (46) being fixedly connected to a third sealing block (47), and the surface of the second rotating rod (45) being sleeved with a second torsion spring (48).

4. The flow meter for sewage detection according to claim 1, characterized in that: Flanges (49) are symmetrically fixedly connected to both ends of the mounting tube (1).

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