Farmland open channel flowmeter

Abstract

The utility model belongs to the technical field of flow meters, and particularly relates to a farmland open channel flow meter which comprises a water measuring channel, and a water measuring mechanism and a cleaning mechanism are arranged above the water measuring channel. The water measuring mechanism is positioned above the cleaning mechanism; the water measuring mechanism comprises an ultrasonic sensor, and the water measuring mechanism measures the height of the water level in the water channel through the ultrasonic sensor. The cleaning mechanism comprises a cleaning plate, and the cleaning mechanism achieves the action of cleaning sludge and sundries at the bottom of the canal through the cleaning plate. According to the farmland open channel flowmeter, the cleaning mechanism cleans sludge and sundries at the bottom of a measuring canal through a cleaning plate, the water measuring mechanism clamps an ultrasonic sensor through a water measuring box and a water measuring plate, and the ultrasonic sensor calculates the flow of the measuring canal by measuring the height of the water level in the measuring canal; the technical problem that the water level height does not accord with the actual flow during measurement of the open channel flowmeter due to the fact that sundries such as silt in farmland water are accumulated in an existing measurement channel is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flowmeter, especially to a farmland open channel flowmeter. BACKGROUND

[0002] The open channel flowmeter is a system monitoring device for measuring fluid flow in an open channel or a channel, which is mainly used for flow measurement in farmland irrigation, etc. The ultrasonic open channel flowmeter is the most common flowmeter, which is mainly composed of a water measuring weir groove, a sensor and a main mechanism, adopts a non-contact measurement method, can be applied in a relatively harsh environment, and the shape of the farmland irrigation channel is relatively regular, like a common trapezoidal or rectangular channel. The water level in the channel is measured, and the flow is calculated according to the cross-sectional area and other parameters of the channel by using the formula of hydraulics.

[0003] In actual use, the silt and sundries in the farmland water are accumulated in the measuring channel, which hinders the water channel from passing water, so that the water level height during measurement does not match the actual flow, thereby being inconvenient to use. UTILITY MODEL CONTENT

[0004] In view of the technical problem that the silt and sundries in the farmland water are accumulated in the measuring channel, so that the water level height during measurement of the open channel flowmeter does not match the actual flow, the utility model provides a farmland open channel flowmeter.

[0005] The utility model provides a farmland open channel flowmeter, which comprises a water measuring channel, and a water measuring mechanism and a cleaning mechanism are arranged above the water measuring channel.

[0006] The water measuring mechanism is located above the cleaning mechanism.

[0007] The water measuring mechanism comprises an ultrasonic sensor, and the water measuring mechanism realizes the action of measuring the water level height in the water measuring channel by the ultrasonic sensor.

[0008] The cleaning mechanism comprises a cleaning plate, and the cleaning mechanism realizes the action of cleaning the silt and sundries at the bottom of the water measuring channel by the cleaning plate.

[0009] Preferably, the water measuring mechanism further comprises a water measuring support, the surface of the water measuring support is fixedly connected with the upper surface of the water measuring channel, the surface of the water measuring support is rotationally connected with a water measuring screw rod, the surface of the water measuring screw rod is fixedly connected with a water measuring belt pulley, the surface of the water measuring screw rod is respectively provided with a water measuring tank and a water measuring plate, the bottom of the water measuring tank is provided with a detection hole, the upper surface of the water measuring support is fixedly connected with a waterproof plate, and the surface of the waterproof plate is fixedly connected with a water measuring motor.

[0010] Preferably, the output shaft of the water measuring motor is fixedly connected to one end of the water measuring screw via a coupling, the two water measuring screws are symmetrically distributed around the axis of the water measuring bracket, the surfaces of the two water measuring pulleys are connected by belt drive, the surfaces of the water measuring tank and the water measuring plate are threadedly connected to the surfaces of the two water measuring screws, the thread directions of the water measuring tank and the water measuring plate are opposite, and the surface of the ultrasonic sensor is fixedly connected to the bottom of the water measuring tank.

[0011] Preferably, the cleaning mechanism further includes a cleaning motor, the surface of which is fixedly connected to the surface of the measuring channel, and a cleaning screw is rotatably connected to the surface of the measuring channel. The output shaft of the cleaning motor is fixedly connected to one end of the cleaning screw via a coupling, and the two cleaning screws are symmetrically distributed about the axis of the measuring channel.

[0012] Preferably, a cleaning pulley is fixedly connected to the surface of the cleaning screw, the surfaces of the two cleaning pulleys are connected by belt drive, a mounting plate is threadedly connected to the surface of each of the two cleaning screws, a cleaning cylinder is rotatably connected to the surface of the mounting plate, and the two cleaning cylinders are symmetrically distributed about the axis of the mounting plate.

[0013] Preferably, the upper surface of the water measuring channel is provided with a cleaning groove, the cleaning plate is located inside the cleaning groove, the surface of the cleaning plate is provided with water passage holes, one end of the cleaning plate is rotatably connected to the surface of the mounting plate, the other end of the cleaning plate is slidably connected to the bottom of the water measuring channel, and the output ends of the two cleaning cylinders are rotatably connected to the surface of the cleaning plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By setting up a cleaning mechanism, which uses a cleaning plate to remove silt and debris from the bottom of the water channel, the technical problem of the existing measurement channel having silt and other debris in the farmland water causing the water level measured by the open channel flow meter to be inconsistent with the actual flow rate is solved.

[0016] 2. By setting up a water measuring mechanism, an ultrasonic sensor is mounted on a water measuring tank and a water measuring plate. The ultrasonic sensor calculates the flow rate of the water measuring channel by measuring the water level inside the water measuring channel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a flow meter for an open channel in farmland proposed in this utility model;

[0018] Figure 2 A three-dimensional view of the measuring plate structure of a flow meter for an open channel in farmland proposed in this utility model;

[0019] Figure 3 A three-dimensional view of the detection hole structure of a flow meter for an open channel in farmland proposed in this utility model;

[0020] Figure 4 A three-dimensional view of the mounting plate structure of a flow meter for an open channel in farmland proposed in this utility model;

[0021] Figure 5 This is a side view of the cleaning cylinder structure of a farmland open channel flow meter proposed in this utility model.

[0022] In the diagram: 1. Water measuring channel; 2. Ultrasonic sensor; 3. Cleaning plate; 201. Water measuring bracket; 202. Water measuring screw; 203. Water measuring pulley; 204. Water measuring tank; 205. Water measuring plate; 206. Detection hole; 207. Waterproof plate; 208. Water measuring motor; 301. Cleaning motor; 302. Cleaning screw; 303. Cleaning pulley; 304. Mounting plate; 305. Cleaning cylinder; 306. Cleaning groove; 307. Water passage hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-5 A flow meter for open irrigation canals in farmland includes a measuring canal 1, with a measuring mechanism and a cleaning mechanism respectively installed above the measuring canal 1.

[0025] The water measuring mechanism is located above the cleaning mechanism.

[0026] In order to measure the water level in the irrigation canal and calculate the flow rate using hydraulic formulas based on parameters such as the canal's cross-sectional area, a water measuring mechanism is installed, referring to... Figures 1-3 The water measuring mechanism includes an ultrasonic sensor 2, which measures the water level inside the water measuring channel 1 using the ultrasonic sensor 2.

[0027] The water measuring mechanism also includes a water measuring bracket 201. The surface of the water measuring bracket 201 is fixedly connected to the upper surface of the water measuring channel 1. A water measuring screw 202 is rotatably connected to the surface of the water measuring bracket 201. A water measuring pulley 203 is fixedly connected to the surface of the water measuring screw 202. A water measuring tank 204 and a water measuring plate 205 are respectively provided on the surface of the water measuring screw 202. A detection hole 206 is opened at the bottom of the water measuring tank 204. A waterproof plate 207 is fixedly connected to the upper surface of the water measuring bracket 201. A water measuring motor 208 is fixedly connected to the surface of the waterproof plate 207.

[0028] Furthermore, the waterproof membrane 207 serves to waterproof, dustproof, and sunproof the water meter in the open channel, thus extending its service life.

[0029] The output shaft of the water measuring motor 208 is fixedly connected to one end of the water measuring screw 202 via a coupling. The two water measuring screws 202 are symmetrically distributed around the axis of the water measuring bracket 201. The surfaces of the two water measuring pulleys 203 are connected by belt drive. The surfaces of the water measuring tank 204 and the water measuring plate 205 are threadedly connected to the surfaces of the two water measuring screws 202. The thread directions of the water measuring tank 204 and the water measuring plate 205 are opposite. The surface of the ultrasonic sensor 2 is fixedly connected to the bottom of the water measuring tank 204.

[0030] Furthermore, the water measuring motor 208 drives the water measuring plate 205 and the water measuring tank 204 to move in opposite directions or in opposite directions through two water measuring screws 202. The ultrasonic sensor 2 is placed inside the water measuring tank 204 and measures the water level inside the water measuring tank through the measuring hole below the water measuring tank 204.

[0031] By setting up a water measuring mechanism, the water measuring mechanism uses a water measuring tank 204 and a water measuring plate 205 to clamp an ultrasonic sensor 2. The ultrasonic sensor 2 calculates the flow rate of the water measuring channel 1 by measuring the water level height inside the water measuring channel 1.

[0032] To prevent silt and debris from accumulating in the measuring channels and causing discrepancies between the measured water level and the actual flow rate, a cleaning mechanism is installed, referring to... Figures 4-5 The cleaning mechanism includes a cleaning plate 3, which performs the action of cleaning plate 3 to clean the silt and debris at the bottom of the water channel 1.

[0033] The cleaning mechanism also includes a cleaning motor 301, the surface of which is fixedly connected to the surface of the water measuring channel 1. A cleaning screw 302 is rotatably connected to the surface of the water measuring channel 1. The output shaft of the cleaning motor 301 is fixedly connected to one end of the cleaning screw 302 via a coupling. The two cleaning screws 302 are symmetrically distributed about the axis of the water measuring channel 1.

[0034] Furthermore, the cleaning mechanism drives the cleaning screw 302 to rotate via the cleaning motor 301, thereby enabling the cleaning mechanism to move along the axial direction of the water measuring channel 1 to clean the mud, sand, and other impurities at the bottom of the water measuring channel 1.

[0035] A cleaning pulley 303 is fixedly connected to the surface of the cleaning screw 302. The surfaces of the two cleaning pulleys 303 are connected by belt drive. The surfaces of the two cleaning screws 302 are threadedly connected to the mounting plate 304. The surface of the mounting plate 304 is rotatably connected to the cleaning cylinder 305. The two cleaning cylinders 305 are symmetrically distributed with the axis of the mounting plate 304 as the center.

[0036] Furthermore, the surfaces of the two cleaning pulleys 303 are connected by a belt drive, enabling the two cleaning screws 302 to rotate synchronously, thereby driving the mounting plate 304 to move along the axial direction of the cleaning screws 302.

[0037] A cleaning groove 306 is provided on the upper surface of the water measuring channel 1. The cleaning plate 3 is located inside the cleaning groove 306. A water passage hole 307 is provided on the surface of the cleaning plate 3. One end of the cleaning plate 3 is rotatably connected to the surface of the mounting plate 304, and the other end of the cleaning plate 3 is slidably connected to the bottom of the water measuring channel 1. The output ends of the two cleaning cylinders 305 are rotatably connected to the surface of the cleaning plate 3.

[0038] Furthermore, the cleaning cylinder 305 drives the cleaning plate 3 to rotate, and adjusts the cleaning plate 3 to slide and connect with the bottom of the water measuring channel 1. The lower end of the cleaning plate 3 cleans the debris inside the water measuring channel 1, and the water passage hole 307 at the upper end of the cleaning plate 3 avoids obstructing the water flow.

[0039] By setting up a cleaning mechanism, which uses the cleaning plate 3 to clean the silt and debris at the bottom of the water channel 1, the technical problem of the existing measurement channel having accumulated mud and sand in the farmland water, causing the water level height measured by the open channel flow meter to be inconsistent with the actual flow, has been solved.

[0040] Working principle:

[0041] Before use, the water measuring channel 1 is fixedly installed inside the open irrigation ditch in the farmland. The ultrasonic sensor 2 is then installed at the bottom of the water measuring tank 204. The water measuring motor 208, located below the waterproof plate 207, drives the water measuring screw 202 to rotate. The water measuring pulleys 203 on the surfaces of the two water measuring screws 202 are connected via belt drive, enabling the two screws 202 to rotate synchronously. This causes the water measuring tank 204 and the water measuring plate 205, which are threadedly connected to the surfaces of the two screws 202, to move in opposite directions, thus fixing the ultrasonic sensor 2 inside the water measuring tank 204. The ultrasonic sensor 2 measures the water level inside the water measuring channel 1 through a measuring hole at the bottom of the water measuring tank 204, thereby calculating the flow rate of the water measuring channel 1 and setting a fixed time. When an abnormality is detected by the interval or open channel flow meter, the cleaning cylinder 305 on the surface of the mounting plate 304 is driven. The two cleaning cylinders 305 synchronously drive the cleaning plate 3 to rotate downward. The lower end of the cleaning plate 3 is slidably connected to the bottom of the water measuring channel 1. The upper end of the cleaning plate 3 has a water passage hole 307 to facilitate the continued flow of water in the water measuring channel 1. The cleaning motor 301 on the surface of the water measuring channel 1 is driven. The cleaning motor 301 drives the cleaning screw 302 to rotate. The cleaning pulleys 303 on the surfaces of the two cleaning screws 302 are connected by belt drive to realize the synchronous rotation of the two cleaning screws 302. This drives the mounting plate 304, which is threadedly connected to the surfaces of the two cleaning screws 302, to move along the axial direction of the cleaning screws 302. This drives the cleaning plate 3 below the mounting plate 304 to clean the mud, sand and other impurities at the bottom of the water measuring channel 1.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flow meter for an open irrigation canal in farmland, comprising a measuring canal (1), characterized in that: A water measuring mechanism and a cleaning mechanism are respectively installed above the water measuring channel (1); The water measuring mechanism is located above the cleaning mechanism; The water measuring mechanism includes an ultrasonic sensor (2), which performs the action of measuring the water level inside the water measuring channel (1) through the ultrasonic sensor (2). The cleaning mechanism includes a cleaning plate (3), which performs the action of cleaning the cleaning plate (3) to clean the silt and debris at the bottom of the water channel (1).

2. The flow meter for an open channel in farmland according to claim 1, characterized in that: The water measuring mechanism also includes a water measuring bracket (201), the surface of which is fixedly connected to the upper surface of the water measuring channel (1), a water measuring screw (202) is rotatably connected to the surface of the water measuring bracket (201), a water measuring pulley (203) is fixedly connected to the surface of the water measuring screw (202), a water measuring tank (204) and a water measuring plate (205) are respectively provided on the surface of the water measuring screw (202), a detection hole (206) is opened at the bottom of the water measuring tank (204), a waterproof plate (207) is fixedly connected to the upper surface of the water measuring bracket (201), and a water measuring motor (208) is fixedly connected to the surface of the waterproof plate (207).

3. The flow meter for an open channel in farmland according to claim 2, characterized in that: The output shaft of the water measuring motor (208) is fixedly connected to one end of the water measuring screw (202) via a coupling. The two water measuring screws (202) are symmetrically distributed around the axis of the water measuring bracket (201). The surfaces of the two water measuring pulleys (203) are connected by belt drive. The surfaces of the water measuring tank (204) and the water measuring plate (205) are threadedly connected to the surfaces of the two water measuring screws (202). The thread directions of the water measuring tank (204) and the water measuring plate (205) are opposite. The surface of the ultrasonic sensor (2) is fixedly connected to the bottom of the water measuring tank (204).

4. The flow meter for an open channel in farmland according to claim 1, characterized in that: The cleaning mechanism also includes a cleaning motor (301), the surface of which is fixedly connected to the surface of the water measuring channel (1), and a cleaning screw (302) is rotatably connected to the surface of the water measuring channel (1). The output shaft of the cleaning motor (301) is fixedly connected to one end of the cleaning screw (302) through a coupling. The two cleaning screws (302) are symmetrically distributed with the axis of the water measuring channel (1) as the center.

5. A flow meter for open channels in farmland according to claim 4, characterized in that: The cleaning screw (302) is fixedly connected to a cleaning pulley (303), and the surfaces of the two cleaning pulleys (303) are connected by a belt drive. The surfaces of the two cleaning screws (302) are threadedly connected to a mounting plate (304), and the surface of the mounting plate (304) is rotatably connected to a cleaning cylinder (305). The two cleaning cylinders (305) are symmetrically distributed with the axis of the mounting plate (304) as the center.

6. A flow meter for open channels in farmland according to claim 5, characterized in that: The upper surface of the water measuring channel (1) is provided with a cleaning groove (306), the cleaning plate (3) is located inside the cleaning groove (306), the surface of the cleaning plate (3) is provided with water passage holes (307), one end of the cleaning plate (3) is rotatably connected to the surface of the mounting plate (304), the other end of the cleaning plate (3) is slidably connected to the bottom of the water measuring channel (1), and the output ends of the two cleaning cylinders (305) are rotatably connected to the surface of the cleaning plate (3).

Images