CN111504403A - Electromagnetic flow meter for plant protection machine - Google Patents
Electromagnetic flow meter for plant protection machine Download PDFInfo
- Publication number
- CN111504403A CN111504403A CN202010204032.9A CN202010204032A CN111504403A CN 111504403 A CN111504403 A CN 111504403A CN 202010204032 A CN202010204032 A CN 202010204032A CN 111504403 A CN111504403 A CN 111504403A
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- flowmeter
- ring
- plant protection
- pipe
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 230000008030 elimination Effects 0.000 claims description 31
- 238000003379 elimination reaction Methods 0.000 claims description 31
- 239000012528 membrane Substances 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 13
- 229920002492 poly(sulfone) Polymers 0.000 claims description 13
- 238000007790 scraping Methods 0.000 claims description 12
- 238000000108 ultra-filtration Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000007872 degassing Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/584—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters constructions of electrodes, accessories therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/08—Air or gas separators in combination with liquid meters; Liquid separators in combination with gas-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/12—Cleaning arrangements; Filters
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides an electromagnetic flowmeter for a plant protection machine, which comprises a flowmeter body and a gas separation mechanism, wherein the flowmeter body is used for measuring the flow of circulating water flow, the gas separation mechanism is used for physically separating gas contained in the water flow, the gas separation mechanism is arranged at the water inlet end on the right side of the flowmeter body, the flowmeter body structurally comprises a converter, a grounding screw, a flowmeter shell, a lining and a movable electrode mechanism, and the converter is fixedly arranged on the flowmeter shell through the grounding screw. This electromagnetic flowmeter for plant protection machine uses the problem that exists according to current electromagnetic flowmeter in the plant protection machine, designs and can reduce the water bubble and avoid the adnexed special construction of bubble, and the plant protection machine water delivery flow who has solved general water delivery usefulness is long, and water delivery pressure is unstable, and the water composition is complicated, and the aquatic contains a large amount of gases, adheres to the bubble under this kind of condition easily on the commonly-used electromagnetic flowmeter electrode, influences the measurement accuracy's of electromagnetic flowmeter problem.
Description
Technical Field
The invention relates to the technical field of electromagnetic flowmeters, in particular to an electromagnetic flowmeter for a plant protection machine.
Background
The electromagnetic flowmeter is an instrument for measuring the flow of conductive fluid by applying an electromagnetic induction principle according to the electromotive force induced when the conductive fluid passes through an external magnetic field, a plant protection machine is a machine for rural plant protection, the electromagnetic flowmeter is also used in the plant protection machine for measuring the water flow, some bubbles are often generated when the water flows pass through the electromagnetic flowmeter, particularly some water flows which cannot flow in a saturated way in a pipeline, the gas content is higher, when the water flows pass through the electromagnetic flowmeter, because the flow velocity of the middle part of a water column in the pipeline is higher, the friction flow velocity of the outer part of the water column, which receives the pipe wall of the electromagnetic flowmeter, is lower, the pressure difference of internal and external forces is easy to generate bubbles, the bubbles are easy to adhere to an electrode arranged in the electromagnetic flowmeter, the measurement precision of the electromagnetic flowmeter is easy to be influenced by the existence of the bubbles, and the water flow of the plant protection machine for general water delivery is long, the water delivery pressure is unstable, the water body components are complex, the water contains a large amount of gas, bubbles are easily attached to the electrodes of the common electromagnetic flow meter under the condition, and the measurement accuracy of the electromagnetic flow meter is influenced, so that the electromagnetic flow meter for the plant protection machine is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electromagnetic flowmeter for a plant protection machine, which solves the problems that the water delivery flow of the plant protection machine for general water delivery is long, the water delivery pressure is unstable, the water body components are complex, the water contains a large amount of gas, and the measurement accuracy of the electromagnetic flowmeter is influenced because bubbles are easily attached to the electrode of the commonly used electromagnetic flowmeter under the condition.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electromagnetic flowmeter for plant protection machine, includes the gas separation mechanism that is arranged in carrying out the flowmeter body that flow measurement was carried out to circulation rivers and is arranged in carrying out the physics to the gas that contains in the rivers and separate, gas separation mechanism sets up at flowmeter body right side inlet end department, the structure of flowmeter body includes converter, earth screw, flowmeter casing, lining and movable electrode mechanism, the converter passes through earth screw fixed mounting on the flowmeter casing, lining fixed connection is on the inner wall of flowmeter casing, movable electrode mechanism sets up on the flowmeter casing, and excitation coil sets up on the flowmeter casing, the first connecting seal ring of left side and right side fixedly connected with of flowmeter casing.
Preferably, gas separation mechanism includes that gas eliminates pipe, external ring, miniature negative pressure pump, first inside lining clamping ring, second inside lining clamping ring, polysulfone milipore filter, waterproof ventilated membrane, gathers and presses bubble groove and backward flow impactor, the left side of gas elimination pipe is cup jointed through the right side of first joint seal ring with the flowmeter casing, the right side fixedly connected with second joint seal ring of gas elimination pipe, the right side of gas elimination pipe is through second joint seal ring and external pipeline butt joint.
Preferably, first inside lining clamping ring fixed connection is on the inner wall of gaseous elimination pipe, the fixed connection of second inside lining clamping ring is on the inner wall of gaseous elimination pipe, second inside lining clamping ring is located the left side of first inside lining clamping ring, the inner wall of first inside lining clamping ring is arc shape, the inner wall right side of second inside lining clamping ring is the arc form, the internal diameter of the left side inner wall of second inside lining clamping ring is the same with the internal diameter of the inside lining of flowmeter casing, it has waterproof ventilated membrane to inlay on the gaseous elimination pipe, be provided with between the left side of first inside lining clamping ring, the right side of second inside lining clamping ring and the waterproof ventilated membrane and gather and press the bubble groove.
Preferably, the external gas ring that disappears of fixed surface of gas elimination pipe is connected with, the ventilative backup pad of the inner wall fixedly connected with of external gas ring that disappears, the fixed surface of the surface of ventilative backup pad and the fixed surface of waterproof ventilated membrane are connected, the inner wall fixedly connected with polysulfone milipore filter of external gas ring that disappears, the infiltration mouth has been seted up to the bottom of external gas ring that disappears, be provided with the negative pressure chamber between polysulfone milipore filter, ventilative backup pad and the external gas ring that disappears, miniature negative pressure pump fixed mounting is on external gas ring that disappears, the negative pressure pipe has been cup jointed to the input of miniature negative pressure pump, the one end of negative pressure pipe runs through external gas ring that disappears, polysulfone milipore filter and extends to the inside in negative pressure chamber.
Preferably, the gaseous inner wall fixedly connected with backward flow striking body of eliminating the pipe, the right side of backward flow striking body is sharp form, the left side of backward flow striking body is planar, the side of backward flow striking body is the slope form from the right side left, the backward flow striking body is wide in the middle of the upper and lower both ends are narrow, the backward flow striking body the height with gaseous internal diameter of eliminating the pipe the same, the backward flow striking body is located the right side of first inside lining clamping ring.
Preferably, the movable electrode mechanism includes anodal electrode track, negative pole electrode track, a plurality of rivers fin, two pairs of bracing pieces, the insulating roll axis of a plurality of, two rubber scraping plates, curve activity groove and curve brush, the inside fixedly connected with of flowmeter casing is two pairs of bracing pieces that are symmetric distribution as the line of symmetry with the central line of flowmeter casing, and is every right all be provided with the insulating roll axis of a plurality of between the bracing piece, anodal electrode track and negative pole electrode track are established respectively on the insulating roll axis on the bracing piece of difference, anodal electrode track and negative pole electrode track are symmetric distribution as the line of symmetry with the central line of flowmeter casing, all handing-over on anodal electrode track and the negative pole electrode track has a plurality of rivers fin.
Preferably, the surface of the rubber scraping plate is provided with a curve movable groove, the inner wall of the curve movable groove is fixedly connected with a curve brush, the surface of the curve movable groove is in an S-shaped curve shape, the upper height and the lower height of the curve movable groove are higher than those of the water flow fins, the curve brush is made of bristles, the surface of the curve brush is in sliding connection with the surfaces of the water flow fins, the two rubber scraping plates are symmetrically distributed by taking the center line of the flowmeter shell as a symmetrical line, and the surface of the positive electrode crawler belt and the surface of the negative electrode crawler belt are in sliding connection with the surface of the curve brush on one side of the positive electrode crawler belt and the surface of the negative electrode crawler belt.
(III) advantageous effects
(1) By arranging the movable electrode mechanism, on one hand, the electrode circularly rotates along the water potential by means of the speed of the water flow in the water flow, so that the pressure difference between the inside and the outside of a water column is reduced, the generation of bubbles is reduced, and the measurement precision is improved, on the other hand, the circularly rotating positive electrode and the negative electrode can comprehensively and uninterruptedly scrub and clean the electrode under the action of the rubber scraping plate, so that the long-term adhesion of retained bubbles can be avoided, the adhesion of impurities in a water body can be reduced, the corrosion of the electrode is avoided, the service life of equipment is prolonged, and the measurement precision of the equipment is improved.
(2) According to the invention, by arranging the rubber scraping plate, the curve movable groove and the curve brush, with the help of the toughness and the strength of bristles, the bristles clamped in the curve groove clean the electrodes and the water flow fins along the water flow fins, the curve brush made of the bristles rebounds under the extrusion pushing of the curve groove and shakes obliquely up and down along the curve direction, so that the pores at the corner between the electrodes and the water flow fins can be cleaned, and the retention of micro bubbles and the retention of impurities are avoided.
(3) The invention has the advantages that through the arrangement of the gas separation mechanism, on one hand, the backflow impact body is arranged at the water inlet front end of the electromagnetic flowmeter, so that backflow impact can be generated in the flow of water flow, the gas contained in the water flow is promoted to be released, then the water column is clamped and extruded in an annular mode, the gas in the water flow is concentrated in a fixed area, the gas is separated from a pipeline through the negative pressure and the ultrafiltration structure, the gas in the water flow can be reduced, and the measurement precision of the electromagnetic flowmeter is improved.
(4) According to the problems existing in the use of the existing electromagnetic flowmeter in the plant protection machine, the invention designs the special structure capable of reducing water body bubbles and avoiding bubble attachment, and solves the problems that the water delivery flow of the plant protection machine for general water delivery is long, the water delivery pressure is unstable, the water body components are complex, the water contains a large amount of gas, and the bubbles are easily attached to the electrode of the common electromagnetic flowmeter under the condition, so that the measurement accuracy of the electromagnetic flowmeter is influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a gas elimination tube configuration of the present invention;
FIG. 3 is a cross-sectional view of the external air-eliminative ring structure of the present invention;
FIG. 4 is a perspective view of a back flow impactor construction according to the invention;
FIG. 5 is a cross-sectional view of a positive electrode track configuration of the present invention;
fig. 6 is a front view of a rubber scraper plate structure of the present invention.
The flowmeter comprises a flowmeter body 1, a converter 11, a grounding screw 12, a flowmeter shell 13, a lining 14, a movable electrode mechanism 15, a positive electrode track 151, a negative electrode track 152, a water flow fin 153, a supporting rod 154, an insulating rolling shaft 155, a rubber scraping plate 156, a curve movable groove 157, a curve brush 158, a gas separation mechanism 2, a gas elimination pipe 21, an external 22 elimination ring, a miniature 23 negative pressure pump, a first lining pressing ring 24, a second lining pressing ring 25, a polysulfone 26 ultrafiltration membrane, a waterproof 27 breathable film, a pressure-accumulating gas bubble groove 28, a reflux impactor 29, a negative pressure cavity 210, a negative pressure pipe 211, a water seepage port 212, a breathable supporting plate 213, a first connecting sealing ring 3 and a second connecting sealing ring 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides an electromagnetic flowmeter for a plant protection machine, including a flowmeter body 1 for measuring a flow rate of a flowing water stream and a gas separation mechanism 2 for physically separating gas contained in the water stream, the gas separation mechanism 2 being disposed at a right water inlet end of the flowmeter body 1, the flowmeter body 1 including a transducer 11, a ground screw 12, a flowmeter housing 13, a liner 14, and a movable electrode mechanism 15, the transducer 11 being fixedly mounted on the flowmeter housing 13 through the ground screw 12, the liner 14 being fixedly connected to an inner wall of the flowmeter housing 13, the movable electrode mechanism 15 being disposed on the flowmeter housing 13, the excitation coil being disposed on the flowmeter housing 13, and a first connecting seal ring 3 being fixedly connected to a left side and a right side of the flowmeter housing 13.
The gas separation mechanism 2 comprises a gas elimination pipe 21, an external connection gas elimination ring 22, a miniature negative pressure pump 23, a first lining press ring 24, a second lining press ring 25, a polysulfone ultrafiltration membrane 26, a waterproof breathable membrane 27, a pressure accumulation bubble tank 28 and a backflow impactor 29, wherein the left side of the gas elimination pipe 21 is sleeved with the right side of the flowmeter shell 13 through a first connecting seal ring 3, the right side of the gas elimination pipe 21 is fixedly connected with a second connecting seal ring 4, the right side of the gas elimination pipe 21 is butted with an external connection pipeline through the second connecting seal ring 4, the first lining press ring 24 is fixedly connected on the inner wall of the gas elimination pipe 21, the second lining press ring 25 is positioned on the left side of the first lining press ring 24, the inner wall of the first lining press ring 24 is arc-shaped, the right side of the inner wall of the, the inner diameter of the inner wall of the left side of the second lining compression ring 25 is the same as the inner diameter of the lining 14 in the flowmeter shell 13, a waterproof breathable film 27 is embedded on the gas elimination tube 21, a pressure accumulation bubble groove 28 is arranged between the left side of the first lining compression ring 24, the right side of the second lining compression ring 25 and the waterproof breathable film 27, the surface of the gas elimination tube 21 is fixedly connected with an external air elimination ring 22, the inner wall of the external air elimination ring 22 is fixedly connected with a breathable support plate 213, the surface of the breathable support plate 213 is fixedly connected with the surface of the waterproof breathable film 27, the inner wall of the external air elimination ring 22 is fixedly connected with a polysulfone ultrafiltration membrane 26, the bottom of the external air elimination ring 22 is provided with a water seepage port 212, a polysulfone ultrafiltration membrane 26, a negative pressure cavity 210 is arranged between the breathable support plate 213 and the external air elimination ring 22, the miniature negative pressure pump 23 is fixedly arranged on, one end of the negative pressure pipe 211 penetrates through the external degassing ring 22 and the polysulfone ultrafiltration membrane 26 and extends to the inside of the negative pressure cavity 210, the inner wall of the gas elimination pipe 21 is fixedly connected with the backflow impactor 29, the right side of the backflow impactor 29 is sharp, the left side of the backflow impactor 29 is planar, the side surface of the backflow impactor 29 is inclined from right to left, the upper end and the lower end of the backflow impactor 29 are narrow, the middle of the backflow impactor 29 is wide, the height of the backflow impactor 29 is the same as the inner diameter of the gas elimination pipe 21, and the backflow impactor 29 is positioned on the right side of the first lining compression ring 24.
The movable electrode mechanism 15 comprises an anode electrode crawler belt 151, a cathode electrode crawler belt 152, a plurality of water flow fins 153, two pairs of support rods 154, a plurality of insulating rolling shafts 155, two rubber scraping plates 156, a curved movable groove 157 and a curved brush 158, wherein two pairs of support rods 154 which are symmetrically distributed by taking the central line of the flowmeter shell 13 as the symmetrical line are fixedly connected inside the flowmeter shell 13, a plurality of insulating rolling shafts 155 are arranged between each pair of support rods 154, the anode electrode crawler belt 151 and the cathode electrode crawler belt 152 are respectively sleeved on the insulating rolling shafts 155 on the different support rods 154, the anode electrode crawler belt 151 and the cathode electrode crawler belt 152 are symmetrically distributed by taking the central line of the flowmeter shell 13 as the symmetrical line, a plurality of water flow fins 153 are connected on the anode electrode crawler belt 151 and the cathode electrode crawler belt 152, the curved movable groove 157 is formed on the surface of the rubber scraping plates 156, the inner wall of the curved movable groove 157 is fixedly connected with a curved brush 158, the surface of the curved movable groove 157 is in an S-shaped curve shape, the height of the curved movable groove 157 is higher than that of the water flow fins 153, the material of the curved brush 158 comprises bristles, the surface of the curved brush 158 is in sliding connection with the surface of the water flow fins 153, the two rubber scraping plates 156 are symmetrically distributed by taking the center line of the flowmeter shell 13 as a symmetrical line, and the surface of the positive electrode crawler 151 and the surface of the negative electrode crawler 152 are in sliding connection with the surface of the curved brush 158 on one side of the positive electrode crawler 151 and the surface of the negative electrode crawler 152.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
When the gas-bubble collecting type flowmeter is used, the gas eliminating pipe 21 is connected with the right side of the flowmeter body 1 through the first connecting sealing ring 3, the right side of the gas eliminating pipe 21 is connected with an external water pipe through the second connecting sealing ring 4, a power supply is connected, the flowmeter body 1 and the micro negative pressure pump 23 are started, when water flows enter the gas eliminating pipe 21, the water flows firstly contact with the backflow impact body 29, the water flows to the rear side of the backflow impact body 29 along the surface of the backflow impact body 29 and then circles around in a water body to impact the back side of the backflow impact body 29, gas in the water body is released, then the water flows move along the arc surface of the first lining pressing ring 24, the water body is extruded, bubbles in the water can be collected in the gas-bubble collecting groove 28 and upwards collected along the inner wall of the gas-bubble collecting groove 28, at the moment, the micro negative pressure pump 23 pumps the inside of the negative pressure cavity 210 into a negative pressure cavity 210 through the negative pressure pipe 211, and, the water flow in the gas elimination pipe 21 for removing a large amount of gas continuously flows forwards in a columnar shape and enters the flowmeter body 1, the water flow drives the negative electrode caterpillar 152 to rotate through the water flow fins 153, the water flow fins 153 and the negative electrode caterpillar 152 flow along with the water flow, the difference between the internal pressure and the external pressure of the water body is small, no friction bubble is generated near the negative electrode caterpillar 152 and the positive electrode caterpillar 151, meanwhile, the water flow fins 153 on the back of the positive electrode track 151 and the negative electrode track 152 are close to the positive electrode track 151 and the negative electrode track 152 to form a small included angle, at this time, the curved brush 158 shakes and cleans the surfaces of the positive electrode track 151, the negative electrode track 152 and the water flow fins 153 first, the curved brush 158 is squeezed by the curved movable groove 157, the positive electrode track 151 and the water flow fins 153, and each water flow fin 153 passes through one water flow fin 153 to bounce and enter the mentioned small included angle to clean up the magazines and the air bubbles.
Claims (7)
1. The utility model provides an electromagnetic flowmeter for plant protection machine which characterized in that: comprises a flowmeter body (1) for measuring the flow rate of flowing water and a gas separation mechanism (2) for physically separating gas contained in the water flow, the gas separation mechanism (2) is arranged at the water inlet end of the right side of the flowmeter body (1), the flowmeter body (1) structurally comprises a converter (11), a grounding screw (12), a flowmeter shell (13), a lining (14) and a movable electrode mechanism (15), the converter (11) is fixedly arranged on the flowmeter shell (13) through a grounding screw (12), the lining (14) is fixedly connected to the inner wall of the flowmeter shell (13), the movable electrode mechanism (15) is arranged on the flowmeter shell (13), the magnet exciting coil is arranged on the flowmeter shell (13), and the left side and the right side of the flowmeter shell (13) are fixedly connected with a first connecting sealing ring (3).
2. The electromagnetic flowmeter for plant protection machine according to claim 1, wherein: gas separating mechanism (2) including gaseous pipe (21), external ring (22) that disappears, miniature negative pressure pump (23), first inside lining clamping ring (24), second inside lining clamping ring (25), polysulfone milipore filter (26), waterproof ventilated membrane (27), gather and press bubble groove (28) and backward flow striking body (29), the left side of gaseous pipe (21) of eliminating is cup jointed through the right side of first joint seal ring (3) with flowmeter casing (13), the right side fixedly connected with second joint seal ring (4) of gaseous pipe (21) of eliminating, the right side of gaseous pipe (21) of eliminating is passed through second joint seal ring (4) and is docked with external pipeline.
3. The electromagnetic flowmeter for plant protection machine according to claim 2, wherein: first inside lining clamping ring (24) fixed connection is on gaseous inner wall of eliminating pipe (21), the fixed connection of second inside lining clamping ring (25) is on gaseous inner wall of eliminating pipe (21), second inside lining clamping ring (25) are located the left side of first inside lining clamping ring (24), the inner wall of first inside lining clamping ring (24) is the arc shape, the inner wall right side of second inside lining clamping ring (25) is the arc form, the internal diameter of the left side inner wall of second inside lining clamping ring (25) is the same with the internal diameter of inside lining (14) of flowmeter casing (13), it has waterproof ventilated membrane (27) to inlay on gaseous pipe (21), be provided with between the left side of first inside lining clamping ring (24), the right side of second inside lining clamping ring (25) and waterproof ventilated membrane (27) and gather and press bubble groove (28) of gas.
4. The electromagnetic flowmeter for plant protection machine according to claim 3, wherein: the surface of the gas elimination pipe (21) is fixedly connected with an external elimination ring (22), the inner wall of the external connection air elimination ring (22) is fixedly connected with a ventilation support plate (213), the surface of the breathable supporting plate (213) is fixedly connected with the surface of the waterproof breathable film (27), the inner wall of the external degassing ring (22) is fixedly connected with a polysulfone ultrafiltration membrane (26), a water seepage port (212) is arranged at the bottom of the external connection air elimination ring (22), a negative pressure cavity (210) is arranged among the polysulfone ultrafiltration membrane (26), the breathable support plate (213) and the external connection air elimination ring (22), the miniature negative pressure pump (23) is fixedly arranged on the external degassing ring (22), the input end of the miniature negative pressure pump (23) is sleeved with a negative pressure pipe (211), and one end of the negative pressure pipe (211) penetrates through the external degassing ring (22) and the polysulfone ultrafiltration membrane (26) and extends to the inside of the negative pressure cavity (210).
5. The electromagnetic flowmeter for plant protection machine according to claim 4, wherein: the inner wall fixedly connected with backward flow striking body (29) of pipe (21) is eliminated to gas, the right side of the backward flow striking body (29) is sharp form, the left side of the backward flow striking body (29) is planar, the side of the backward flow striking body (29) is the slope form from right side to left, the middle width in the middle of the upper and lower narrow both ends of the backward flow striking body (29), the height of the backward flow striking body (29) is the same with the internal diameter of the pipe (21) is eliminated to gas, the backward flow striking body (29) is located the right side of first inside lining clamping ring (24).
6. The electromagnetic flowmeter for plant protection machine according to claim 5, wherein: the movable electrode mechanism (15) comprises an anode electrode crawler belt (151), a cathode electrode crawler belt (152), a plurality of water flow fins (153), two pairs of supporting rods (154), a plurality of insulating rolling shafts (155), two rubber scraping plates (156), a curve movable groove (157) and a curve brush (158), wherein the two pairs of supporting rods (154) which are symmetrically distributed by taking the central line of the flowmeter shell (13) as a symmetrical line are fixedly connected inside the flowmeter shell (13), the insulating rolling shafts (155) are arranged between every two pairs of supporting rods (154), the anode electrode crawler belt (151) and the cathode electrode crawler belt (152) are respectively sleeved on the insulating rolling shafts (155) on the different supporting rods (154), and the anode electrode crawler belt (151) and the cathode electrode crawler belt (152) are symmetrically distributed by taking the central line of the flowmeter shell (13) as a symmetrical line, and a plurality of water flow fins (153) are connected to the positive electrode crawler belt (151) and the negative electrode crawler belt (152).
7. The electromagnetic flowmeter for plant protection machine of claim 6, wherein: the surface of the rubber scraping plate (156) is provided with a curved movable groove (157), the inner wall of the curved movable groove (157) is fixedly connected with a curved brush (158), the surface of the curved movable groove (157) is in an S-shaped curve shape, the upper height and the lower height of the curved movable groove (157) are higher than the height of the water flow fins (153), the curved brush (158) is made of bristles, the surface of the curved brush (158) is in sliding connection with the surface of the water flow fins (153), the two rubber scraping plates (156) are symmetrically distributed by taking the center line of the flowmeter shell (13) as a symmetrical line, and the surface of the positive electrode crawler (151) and the surface of the negative electrode crawler (152) are in sliding connection with the surfaces of the curved brushes (158) on one side of the positive electrode crawler and the negative electrode crawler (152).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010204032.9A CN111504403B (en) | 2020-03-21 | 2020-03-21 | Electromagnetic flowmeter for plant protection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010204032.9A CN111504403B (en) | 2020-03-21 | 2020-03-21 | Electromagnetic flowmeter for plant protection machine |
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|---|---|---|---|---|
| JPH1183570A (en) * | 1997-09-10 | 1999-03-26 | Toshiba Corp | Electromagnetic flowmeter |
| CN104165662A (en) * | 2014-05-26 | 2014-11-26 | 上海肯特仪表股份有限公司 | Unlined pipeline type necking electromagnetic water meter |
| CN205280159U (en) * | 2016-01-10 | 2016-06-01 | 张庆 | Intelligent electromagnetic flowmeter |
| CN206974489U (en) * | 2017-07-25 | 2018-02-06 | 西南民族大学 | A kind of measurement apparatus of electromagnetic flowmeter |
| CN207649690U (en) * | 2017-12-28 | 2018-07-24 | 开封青天伟业流量仪表有限公司 | A kind of novel undergauge electromagnetic flowmeter |
| CN208109192U (en) * | 2018-04-08 | 2018-11-16 | 江阴市江川仪表有限公司 | Bubble removing electromagnetic flowmeter |
| CN209069356U (en) * | 2018-12-25 | 2019-07-05 | 浙江精华测控设备有限公司 | A kind of electromagnetic flowmeter |
| CN209117094U (en) * | 2018-12-13 | 2019-07-16 | 上海库科自动化科技有限公司 | A kind of New Electromagnetic Flowmeter |
| CN209820548U (en) * | 2019-06-14 | 2019-12-20 | 上海百纳控制工程技术有限公司 | Electromagnetic flowmeter convenient for stabilizing flow velocity distribution |
-
2020
- 2020-03-21 CN CN202010204032.9A patent/CN111504403B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1183570A (en) * | 1997-09-10 | 1999-03-26 | Toshiba Corp | Electromagnetic flowmeter |
| CN104165662A (en) * | 2014-05-26 | 2014-11-26 | 上海肯特仪表股份有限公司 | Unlined pipeline type necking electromagnetic water meter |
| CN205280159U (en) * | 2016-01-10 | 2016-06-01 | 张庆 | Intelligent electromagnetic flowmeter |
| CN206974489U (en) * | 2017-07-25 | 2018-02-06 | 西南民族大学 | A kind of measurement apparatus of electromagnetic flowmeter |
| CN207649690U (en) * | 2017-12-28 | 2018-07-24 | 开封青天伟业流量仪表有限公司 | A kind of novel undergauge electromagnetic flowmeter |
| CN208109192U (en) * | 2018-04-08 | 2018-11-16 | 江阴市江川仪表有限公司 | Bubble removing electromagnetic flowmeter |
| CN209117094U (en) * | 2018-12-13 | 2019-07-16 | 上海库科自动化科技有限公司 | A kind of New Electromagnetic Flowmeter |
| CN209069356U (en) * | 2018-12-25 | 2019-07-05 | 浙江精华测控设备有限公司 | A kind of electromagnetic flowmeter |
| CN209820548U (en) * | 2019-06-14 | 2019-12-20 | 上海百纳控制工程技术有限公司 | Electromagnetic flowmeter convenient for stabilizing flow velocity distribution |
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