CN115507909B

CN115507909B - Flowmeter for measuring flow rate

Info

Publication number: CN115507909B
Application number: CN202211273822.8A
Authority: CN
Inventors: 沈文权; 胡建翔; 郑淑男
Original assignee: Xia Qianming
Current assignee: Xia Qianming
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-10-13
Anticipated expiration: 2042-10-18
Also published as: CN115507909A

Abstract

The invention relates to the technical field of metering elements and discloses a flowmeter, which comprises an instrument tube, wherein flange plates are fixedly arranged at two ends of the instrument tube, a fixed rod is fixedly arranged at the top side of the instrument tube, a counter is fixedly arranged at the top end of the fixed rod, guide rectifiers are fixedly arranged inside the two ends of the instrument tube, bearings are rotatably connected to one opposite sides of the two groups of guide rectifiers, a turbine is rotatably connected between the two groups of guide rectifiers through the bearings, a transmission part is arranged inside the fixed rod, and a cleaning part is arranged inside the fixed rod; the rotating plate is driven downwards through the sliding block to rotate, so that the rotating plate is located between every two groups of blades of the turbine, and then when the turbine rotates, the surfaces of the blades of the rotating plate are in contact friction with the cleaning sheets, so that the blades can be cleaned, the rotating plate can be driven to shake through the tension springs, the cleaning effect on the turbine blades can be improved, and the effects of conveniently cleaning the blades and avoiding affecting the measurement accuracy are achieved.

Description

Flowmeter for measuring flow rate

Technical Field

The invention relates to the technical field of metering elements, in particular to a flowmeter.

Background

A flowmeter is a fluid flow meter, which is defined as a meter that indicates the total amount of fluid being measured and/or in a selected time interval, simply a meter for measuring the flow of fluid in a pipeline or open channel, and is widely used because it is classified into a plurality of types according to different fields, and a turbine flowmeter belongs to one of the flowmeters with the highest accuracy.

The working principle of the existing turbine flowmeter is that fluid to be measured passes through a flowmeter, under the action of the fluid, a turbine is stressed to rotate, the rotating speed is in direct proportion to the average flow velocity, the rotation of the turbine is converted into a periodic pulse signal by an induction probe, and then the flow parameter is obtained through analysis of an instrument, so that the flow data of the fluid can be obtained through calculation.

In carrying out the present process, the inventors have found that there are at least the following problems in this technique: because the fluid always contains impurities, dirt can be accumulated on the surface of the turbine after the turbine is flushed for a long time, so that the resistance of the turbine to rotation can be increased, the measurement result is not accurate enough, and the whole flowmeter is required to be detached when the turbine is cleaned, so that the turbine can be further improved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides the flowmeter which has the advantages of being convenient for cleaning blades, avoiding influencing the measurement precision and the like, and solves the problems.

(II) technical scheme

In order to solve the problems, the invention provides the following technical scheme: the utility model provides a flowmeter, includes the instrument tube, the equal fixed mounting in both ends of instrument tube has the ring flange, the top side fixed mounting of instrument tube has the dead lever, the top fixed mounting of dead lever has the counter, the inside equal fixed mounting in both ends of instrument tube has the direction rectifier, and the relative one side rotation of two sets of direction rectifiers is connected with the bearing, rotates through the bearing between two sets of direction rectifiers and is connected with the turbine, the inside of dead lever is provided with drive unit, the inside of dead lever is provided with clearance part, just clearance part is located drive unit's below.

Further, the transmission part comprises an electric telescopic rod fixedly installed in the top of the fixed rod, a movable chamber is arranged in the fixed rod, a slotted cylinder is arranged at one end of an output shaft of the movable chamber, a blocking plate is fixedly installed at the bottom end of the slotted cylinder, and a through hole is formed in a position, corresponding to the blocking plate, of the instrument pipe.

Further, the clearance part includes sliding connection sliding block and fixed mounting in the fluting drum limit assembly in fluting drum both sides, the positive one side rotation of sliding block is connected with the connecting rod, the other end of connecting rod rotates and is connected with the commentaries on classics board, the bottom fixed mounting of commentaries on classics board has the extension spring, the other end fixed mounting of extension spring has the extension board, the other end of extension board is provided with the base, the equal fixed mounting in front back of commentaries on classics board has the clearance piece, limit assembly is including seting up the spout in its inside, the inside fixed mounting of spout has reset spring, the other end fixed mounting of reset spring has the extrusion head.

Further, electric telescopic handle fixed mounting is at the activity room roof, the top fixed mounting of fluting drum has spacing slider, spacing slider slides along the inner wall of activity room, can drive the inside of fluting drum at the activity room through electric telescopic handle is flexible to go up and down, plays location slip effect through spacing slider simultaneously.

Further, the outside cover of closure plate has round sealing rubber pad, the closure plate joint is in the through-hole, improves the leakproofness through sealing rubber pad, prevents that rivers from getting into in the fluting drum.

Further, sliding block fixed mounting is in the bottom of electric telescopic handle, sliding block initial position is located spacing subassembly top, just spacing subassembly protrusion fluting drum's inner wall is spacing to the sliding block, can drive the sliding block synchronous movement through electric telescopic handle is flexible, through spacing subassembly restriction sliding block, and then can drive fluting drum downwardly moving.

Furthermore, the bottom of the rotating plate and the top of the supporting plate are fixedly provided with the panels, and the two ends of the tension spring are respectively embedded and clamped into the upper panel and the lower panel.

Further, the bottom fixed mounting of base is in the closure plate top side, the clearance piece is sponge abrasive paper, through the rotation fulcrum of base as the extension board, through extension spring self characteristic stretching, can make the extension board receive the extrusion shake, and then can carry out friction clearance to the surface of turbine through the clearance piece.

Further, extrusion head sliding connection is in the inside of spout, the outside of extrusion head is circular arc shape, makes extrusion head initial position be located outside the spout through reset spring's elasticity, when the pressure that the extrusion head received exceeds reset spring's elasticity, can make extrusion head slip move into in the spout, no longer restrict the sliding block.

(III) beneficial effects

Compared with the prior art, the invention provides a flowmeter, which has the following beneficial effects:

this flowmeter carries out spacingly through extrusion head to the sliding block, so when electric telescopic handle drives the sliding block and moves down, can drive the whole downwardly moving of fluting drum, and when spacing subassembly removes and keeps off outside the through-hole, electric telescopic handle can continue to drive the sliding block and move down, and then can extrude the extrusion head into the spout in, the sliding block can slide the below of spacing subassembly this moment, the sliding block continues to drive the revolving plate through the connecting rod and rotate with the base as the fulcrum, so can drive the revolving plate and be located between every two sets of blades of turbine, and then when the turbine rotates, its blade surface can contact friction with the clearance piece, so can clear up the blade, and follow a set of blade through the extension spring and remove simultaneously, and can drive the revolving plate shake when contacting next set of blade, and then can improve the clearance effect to turbine blade, thereby reach convenient clearance blade, avoid influencing measuring accuracy's effect.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention in section;

FIG. 3 is a schematic diagram of the structure of the present invention in operation;

FIG. 4 is a schematic diagram of the structure of the transmission component of the present invention;

FIG. 5 is a schematic illustration of the operation of the transmission component structure of the present invention;

FIG. 6 is a schematic view of the cleaning element of the present invention;

fig. 7 is an enlarged schematic view of the partial structure of fig. 6 a according to the present invention.

In the figure: 1. an instrumentation tube; 2. a flange plate; 3. a fixed rod; 4. a counter; 5. a guide rectifier; 6. a turbine; 7. a transmission member; 71. an electric telescopic rod; 72. a movable chamber; 73. a slotted cylinder; 74. a closure plate; 75. a through hole; 8. cleaning the component; 81. a sliding block; 82. a limit component; 821. a chute; 822. a reset spring; 823. an extrusion head; 83. a connecting rod; 84. a rotating plate; 841. cleaning sheets; 85. a tension spring; 86. a support plate; 87. and (5) a base.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, a flowmeter comprises a meter tube 1, wherein flanges 2 are fixedly installed at two ends of the meter tube 1, the flowmeter is conveniently installed through the flanges 2, a fixing rod 3 is fixedly installed at the top side of the meter tube 1, a counter 4 is fixedly installed at the top end of the fixing rod 3, guide rectifiers 5 are fixedly installed inside two ends of the meter tube 1, bearings are rotatably connected to one side, opposite to the two groups of guide rectifiers 5, of the two groups of guide rectifiers 5, a turbine 6 is rotatably connected between the two groups of guide rectifiers 5 through the bearings, a transmission part 7 is arranged inside the fixing rod 3, a cleaning part 8 is arranged inside the fixing rod 3, and the cleaning part 8 is located below the transmission part 7.

Referring to fig. 4-5, the transmission part 7 comprises an electric telescopic rod 71 fixedly installed in the top of the fixed rod 3, a movable chamber 72 is provided in the fixed rod 3, the electric telescopic rod 71 is fixedly installed on the top wall of the movable chamber 72, a slotted cylinder 73 is arranged at one end of an output shaft of the movable chamber 72, a limit sliding block is fixedly installed at the top end of the slotted cylinder 73, slides along the inner wall of the movable chamber 72, and can drive the slotted cylinder 73 to lift in the movable chamber 72 by stretching and retracting of the electric telescopic rod 71, and meanwhile, the limiting sliding block plays a role in positioning and sliding; the bottom end of the slotted cylinder 73 is fixedly provided with a blocking plate 74, the outer side of the blocking plate 74 is sleeved with a circle of sealing rubber gasket, a through hole 75 is formed in the position, corresponding to the blocking plate 74, of the instrumentation tube 1, the blocking plate 74 is clamped in the through hole 75, the sealing performance is improved through the sealing rubber gasket, and water is prevented from entering the slotted cylinder 73.

Referring to fig. 6, the cleaning component 8 includes a sliding block 81 slidably connected in the slotted cylinder 73 and limiting components 82 fixedly installed at two sides of the slotted cylinder 73, the sliding block 81 is fixedly installed at the bottom end of the electric telescopic rod 71, the initial position of the sliding block 81 is located above the limiting components 82, the limiting components 82 protrude out of the inner wall of the slotted cylinder 73 to limit the sliding block 81, the sliding block 81 is driven to synchronously move by the expansion and contraction of the electric telescopic rod 71, and the sliding block 81 is limited by the limiting components 82, so that the slotted cylinder 73 can be driven to move downwards; the front side of sliding block 81 rotates and is connected with connecting rod 83, the other end of connecting rod 83 rotates and is connected with rotating plate 84, the bottom fixed mounting of rotating plate 84 has extension spring 85, the other end fixed mounting of extension spring 85 has extension plate 86, the bottom of rotating plate 84 and the top of extension plate 86 all fixed mounting have the panel, the both ends of extension spring 85 are the scarf joint card respectively and are gone into two sets of panels from top to bottom, the other end of extension plate 86 is provided with base 87, the bottom fixed mounting of base 87 is at the top side of closure plate 74, the front back of rotating plate 84 all fixed mounting has cleaning sheet 841, cleaning sheet 841 is sponge abrasive paper, through the rotation fulcrum of base 87 as extension plate 86, through extension spring 85 self characteristic tensile, can make rotating plate 84 receive the extrusion shake, and then can carry out the friction clearance to the surface of turbine 6 through cleaning sheet 841.

Referring to fig. 7, the limiting component 82 includes a sliding groove 821 formed therein, a return spring 822 is fixedly mounted in the sliding groove 821, an extrusion head 823 is fixedly mounted at the other end of the return spring 822, the extrusion head 823 is slidably connected in the sliding groove 821, the outer side of the extrusion head 823 is arc-shaped, the initial position of the extrusion head 823 is located outside the sliding groove 821 through the elasticity of the return spring 822, and when the pressure applied to the extrusion head 823 exceeds the elasticity of the return spring 822, the extrusion head 823 is slidably moved into the sliding groove 821, so that the sliding block 81 is not limited.

Working principle: referring to fig. 1-7, in operation, after the fluid is guided by the guide rectifier 5, the flow direction of the fluid and the blades of the turbine 6 have a certain angle, the blades have a rotation moment due to the impulse of the fluid, the blades rotate after overcoming the fluid resistance of the friction moment, and then the instantaneous flow and the accumulated flow of the fluid are measured and displayed by the counter 4;

when the flowmeter works for too long and needs cleaning, firstly, the electric telescopic rod 71 drives the sliding block 81 to move downwards along the inner wall of the slotted cylinder 73 and to be abutted to the outer side of the extrusion head 823, the extrusion head 823 limits the sliding block 81, and then the slotted cylinder 73 is driven to move downwards integrally, as shown in fig. 3 and 5, when the slotted cylinder 73 moves to the position of the through hole 75, the slotted cylinder 73 is limited and positioned outside the through hole 75 by the limiting component 82, at the moment, the movable chamber 72 can continuously push the sliding block 81 to move downwards, and then the extrusion head 823 is extruded into the sliding groove 821, so that the sliding block 81 can slide below the limiting component 82;

at this time, the sliding block 81 drives the rotating plate 84 to rotate by taking the base 87 as a fulcrum through the connecting rod 83, so that the rotating plate 84 deflects to the turbine 6, when the turbine 6 rotates, the blades of the sliding block can be in contact with the cleaning sheets 841 on the outer side of the rotating plate 84, and then the surfaces of the blades of the turbine 6 can be cleaned through friction of the cleaning sheets 841, meanwhile, the rotating plate 84 can be extruded by the rotation of the turbine 6, the rotating plate 84 is conveniently deflected along with the blades through the tension springs 85, the upper group of blades are far away from the rotating plate 84, and when the next group of blades are close to the rotating plate 84, the rotating plate 84 is driven to shake through the tension springs 85, and then the cleaning effect on the blades of the turbine 6 can be improved;

after cleaning, the electric telescopic rod 71 drives the sliding block 81 to move upwards along the inner wall of the slotted cylinder 73, so that the rotating plate 84 is driven to rotate into the slotted cylinder 73, the extrusion head 823 continues to limit the sliding block 81 above the sliding block 81, the slotted cylinder 73 moves upwards integrally, the blocking plate 74 is finally blocked into the through hole 75, and the sliding block 81 can see the extrusion head 823 to extrude into the sliding groove 821 and then moves to the upper side of the limiting component 82 again.

To sum up, this flowmeter carries out spacingly to slider 81 through extrusion head 823, so when electric telescopic rod 71 drives slider 81 and moves down, can drive slotted cylinder 73 whole downwardly moving, and when spacing subassembly 82 removes and keeps off outside through-hole 75, electric telescopic rod 71 can continue to drive slider 81 and move down, and then can extrude extrusion head 823 into spout 821, slider 81 can slide the below of spacing subassembly 82 this moment, slider 81 continues to pass through connecting rod 83 downwards can drive rotating plate 84 and regard base 87 as the fulcrum rotation, so can drive rotating plate 84 and be located between every two groups of blades of turbine 6, and then when turbine 6 rotates, its blade surface can with clearance piece 841 contact friction, so can clear up the blade, make things convenient for rotating plate 84 to follow last group of blade through extension spring 85 simultaneously, and can drive rotating plate 84 shake when contacting next group's blade, and then can improve the clearance effect to turbine 6 blade, thereby reach the effect that makes things convenient for the clearance blade, avoid influencing the measurement precision.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Standard parts used by the invention can be purchased from the market, and special-shaped parts can be customized according to the description of the specification and the drawings.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A flowmeter comprising an instrumentation tube (1), characterized in that: the novel instrument tube is characterized in that flange plates (2) are fixedly arranged at two ends of the instrument tube (1), a fixing rod (3) is fixedly arranged at the top side of the instrument tube (1), a counter (4) is fixedly arranged at the top end of the fixing rod (3), guide rectifiers (5) are fixedly arranged inside the two ends of the instrument tube (1), bearings are rotatably connected to one opposite sides of the two groups of guide rectifiers (5), a turbine (6) is rotatably connected between the two groups of guide rectifiers (5) through the bearings, a transmission part (7) is arranged inside the fixing rod (3), a cleaning part (8) is arranged inside the fixing rod (3), and the cleaning part (8) is located below the transmission part (7);

the transmission part (7) comprises an electric telescopic rod (71) fixedly arranged in the top of the fixed rod (3), a movable chamber (72) is formed in the fixed rod (3), a slotted cylinder (73) is arranged at one end of an output shaft of the movable chamber (72), a blocking plate (74) is fixedly arranged at the bottom end of the slotted cylinder (73), and a through hole (75) is formed in the position, corresponding to the blocking plate (74), of the instrument tube (1);

the cleaning component (8) comprises a sliding block (81) which is slidably connected in a slotted cylinder (73) and limiting components (82) which are fixedly installed on two sides of the slotted cylinder (73), a connecting rod (83) is rotationally connected to one side of the front face of the sliding block (81), a rotating plate (84) is rotationally connected to the other end of the connecting rod (83), a tension spring (85) is fixedly installed at the bottom end of the rotating plate (84), a support plate (86) is fixedly installed at the other end of the tension spring (85), a base (87) is arranged at the other end of the support plate (86), cleaning sheets (841) are fixedly installed on the front face and the back face of the rotating plate (84), the limiting components (82) comprise sliding grooves (821) formed in the sliding grooves, reset springs (822) are fixedly installed in the sliding grooves (821), and extrusion heads (823) are fixedly installed at the other ends of the reset springs (822).

2. A flowmeter according to claim 1, wherein: the electric telescopic rod (71) is fixedly arranged on the top wall of the movable chamber (72), a limit sliding block is fixedly arranged at the top end of the slotted cylinder (73), and the limit sliding block slides along the inner wall of the movable chamber (72).

3. A flowmeter according to claim 1, wherein: a circle of sealing rubber gasket is sleeved on the outer side of the blocking plate (74), and the blocking plate (74) is clamped in the through hole (75).

4. A flowmeter according to claim 1, wherein: the sliding block (81) is fixedly arranged at the bottom end of the electric telescopic rod (71), the initial position of the sliding block (81) is located above the limiting component (82), and the inner wall of the limiting component (82) protruding out of the slotted cylinder (73) limits the sliding block (81).

5. A flowmeter according to claim 1, wherein: the bottom end of the rotating plate (84) and the top end of the supporting plate (86) are fixedly provided with panels, and two ends of the tension spring (85) are respectively embedded and clamped into the upper panel and the lower panel.

6. A flowmeter according to claim 1, wherein: the bottom end of the base (87) is fixedly arranged on the top side of the blocking plate (74), and the cleaning sheet (841) is sponge sand paper.

7. A flowmeter according to claim 1, wherein: the extrusion head (823) is connected inside the sliding groove (821) in a sliding mode, and the outer side of the extrusion head (823) is in an arc shape.