CN216899035U

CN216899035U - Variable-area flowmeter

Info

Publication number: CN216899035U
Application number: CN202220653804.1U
Authority: CN
Inventors: 宗寿兵
Original assignee: Individual
Current assignee: Jiangsu Wojiake Technology Industry Group Co.,Ltd.
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-07-05
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a variable-area flowmeter, which comprises a pipe body, wherein the outer surface of the pipe body is connected with a dial plate, the dial plate back extends backward has the horizontally arrangement pipe, be equipped with the roating seat adjacent with the body in the arrangement pipe, the surface swing joint rotation axis of roating seat, the one end of rotary rod passes the dial plate and connects the pointer, the surface of rotary rod connects first magnet, first magnet is close to the roating seat, body inner wall intermediate junction taper pipe, the top in the body connects the upper stop, the upper stop car shape is the toper, the upper guide arm is connected to the activity in the upper stop, the upper guide arm is located the centre of a circle department of upper stop, the lower extreme of upper guide arm connects the upper surface of float, the shape of float is the T shape, the lower surface of float connects the upper surface of lower guide arm, the surface swing joint lower surface of stop of lower guide arm, the lower surface of lower stop connects the interior lower surface with the body, the second magnet is connected to the outer surface of float.

Description

Variable-area flowmeter

Technical Field

The present invention relates to flow meters.

Background

The variable area flowmeter, commonly called a metal rotameter, is a type of variable area flowmeter in which the weight of a float having a circular cross section is borne by hydrodynamic force in a vertical cone expanding from bottom to top, and the float can freely rise and fall within the cone. The float moves up and down under the action of flow speed and buoyancy, and after the weight of the float is balanced, the float is magnetically coupled to the dial to indicate flow.

The taper part at the lower end of the float in the existing flowmeter is easy to adsorb impurities, the failure of the float is easy to cause, the passing rate of fluid at the working edge of the float is reduced, and serious errors are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a variable-area flowmeter, which can effectively solve the problem that the taper part at the lower end of a float in the existing flowmeter in the background technology is easy to adsorb impurities and cause the fault of the float.

The technical scheme for realizing the purpose is as follows: a variable-area flowmeter comprises a pipe body, wherein the outer surface of the pipe body is connected with a dial plate, a horizontal mounting pipe extends backwards from the back surface of the dial plate, a rotary seat adjacent to the pipe body is arranged in the mounting pipe, the surface of the rotary seat is movably connected with a rotary rod, one end of the rotary rod penetrates through the dial plate and is connected with a pointer, the surface of the rotary rod is connected with a first magnet, and the first magnet is close to the rotary seat;

the pipe inner wall interlude connects the taper pipe, the top in the pipe body connects the connection and ends the shelves, the shape of going up the shelves is the toper, go up the interior swing joint of shelves and connect the upper guide arm, go up the guide arm and be located the centre of a circle department of going up the shelves, the upper surface of float is connected to the lower extreme of upper guide arm, the shape of float is T shape, the upper surface of lower guide arm is connected to the lower surface of float, the surface swing joint of lower guide arm ends the internal surface of shelves down, the surface of stopping the shelves down connect in the interior lower surface of pipe body, the surface connection second magnet of float.

Preferably, the following components: and a plurality of through grooves are formed in the surfaces of the upper stop and the lower stop.

Preferably: a plurality of air chambers are arranged in the floater.

Preferably: and the upper end and the lower end of the pipe body are both provided with flange plates.

Preferably: the upper part of the first magnet is an N pole, the lower part of the first magnet is an S pole, the upper part of the second magnet is an S pole, and the lower part of the second magnet is an N pole.

Preferably: the shape of dial plate is T shape, the dial plate includes dial plate body and the arrangement pipe of level placement.

Preferably: the outer shape of the floater is of a T-shaped structure.

Preferably: the middle connecting pipe on the inner wall of the pipe body is a conical pipe.

The utility model has the technical effects that:

1.) because the working edge of the adopted floater is arranged at the upper end of the floater body, impurities in the fluid are prevented from being clamped on the working edge of the rotor, and the phenomenon of clamping is reduced.

2) Because the air is filled in the floater, the buoyancy is greatly increased, and the pressure of the water pump and the air pump needs to be greatly reduced.

3) Because the position of the floater in the conical pipe is changed, the lifting force of the working edge of the floater is increased when the fluid rises, and simultaneously the fluid changes direction when meeting resistance on the working edge of the floater, and diffuses towards two sides to form two forces, namely the buoyancy and the upward pressure of the fluid, so that the floater is easier to float.

4) Combine 2) and 3), through practical detection, this structure is half of the foreign product to the differential pressure requirement in the pipeline, is 1/10 of domestic rotor, very big reduction the energy consumption of pump, the life-span of very big elevator pump.

Drawings

FIG. 1 is an overall view of the present invention;

FIG. 2 is an overall cross-sectional view of the present invention;

figure 3 is a cross-sectional view at another angle of the utility model as a whole,

fig. 4 is a cross-sectional view with the dial removed.

In the figure: 1. a pipe body; 2. a dial plate; 3. rotating the rod; 4. stopping at an upper stop; 5. stopping at a lower stop; 6. an upper guide rod; 7. a float; 8. a lower guide rod; 9. a second magnet; 10. a first magnet; 11. a pointer; 12. an air chamber; 13. a connecting pipe; 14. a rotating seat.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, 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 description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

The utility model will be further explained with reference to the drawings.

Referring to fig. 1-4, the area-variable flowmeter of the present invention includes a pipe body 1, the outer surface of the pipe body 1 is connected to a dial 2, a horizontal arrangement pipe extends backward from the back of the dial 2, a rotary seat 14 adjacent to the pipe body 1 is arranged in the arrangement pipe, the surface of the rotary seat 14 is movably connected to a rotary rod 3, one end of the rotary rod 3 passes through the dial 2 and is connected to a pointer 11, the surface of the rotary rod 3 is connected to a first magnet 10, the first magnet 10 is adjacent to the rotary seat 14, the upper part of the first magnet 10 is an N pole, and the lower part of the first magnet 10 is an S pole;

the connecting pipe 13 is a conical pipe in the middle of the inner wall of the pipe body 1, an upper stop 4 is connected to the upper portion in the pipe body 1, the upper stop 4 is conical in shape, a plurality of through grooves are formed in the surfaces of the upper stop 4 and a lower stop 5, fluid can conveniently pass through the upper stop 4 and the lower stop 5, an upper guide rod 6 is movably connected to the upper stop 4 in the upper stop 4, the upper guide rod 6 is located at the circle center of the upper stop 4, the lower end of the upper guide rod 6 is connected with the upper surface of a floater 7, the floater 7 is T-shaped, a plurality of air chambers 12 are arranged in the floater 7, the buoyancy of the floater 7 is increased, the buoyancy required when the floater 7 floats upwards is reduced, the lower surface of the floater 7 is connected with the upper surface of a lower guide rod 8, the surface of the lower guide rod 8 is movably connected with the inner surface of the lower stop 5, the outer surface of the lower stop 5 is connected with the inner lower surface of the pipe body 1, the outer surface of the floater 7 is connected with a second magnet 9, the upper portion of the second magnet 9 is an S pole, and the lower portion is an N pole.

The working principle is as follows:

when no fluid exists in the conical tube 13, the lower surface of the floater 7 is in contact with the upper surface of the lower stop 5, when the fluid flows in, the floater 7 ascends under the action of the thrust of the fluid in the conical tube 13, the floater 7 simultaneously drives the lower guide rod 8 and the upper guide rod 6 to move upwards, the second magnet 9 on the surface of the floater 7 moves upwards, the second magnet 9 drives the first magnet 10 to rotate, the first magnet 10 drives the rotary rod 3 to rotate, the rotary rod 3 rotates on the rotary seat 14, the rotary rod 3 drives the pointer 11 to rotate outside the dial 2, the more the floater 7 ascends, the larger the magnetic angle of the first magnet 10 is, the rotary rod 3 is driven to rotate, the larger the magnetic angle of the pointer 11 is, the lower guide rod 8 slides upwards in the lower stop 5, and the upper guide rod 6 slides upwards in the upper stop 4, and the area of a fluid channel is increased. The greater the flow, the higher the height the float 7 rises. The height of the float 7 at this time is directly proportional to the flow rate. When the object to be measured is liquid, the floater 7 rises under the combined action of the buoyancy of the liquid and the fluid velocity head. When the object to be measured is gas, the buoyancy is negligible, and the float 7 only reacts to the velocity head.

The up and down movement of the float 7 in the conical tube 13 is proportional to the fluid flow and the annular area between the float 7 and the tubular body 1. The float 7 reaches a stable position in the body 1 when the upward force exerted by the fluid is equal to the downward earth attraction force generated by the weight of the float 7. A change in flow will break this balance of forces. The float 7 will then move upwards or downwards, changing the annular area, until a position is reached, in which the forces again reach an equilibrium state.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The area-variable flow meter is characterized by comprising a pipe body (1), wherein the outer surface of the pipe body (1) is connected with a dial plate (2), a horizontal arrangement pipe extends backwards from the back surface of the dial plate (2), a rotary seat (14) adjacent to the pipe body (1) is arranged in the arrangement pipe, the surface of the rotary seat (14) is movably connected with a rotary rod (3), one end of the rotary rod (3) penetrates through the dial plate (2) to be connected with a pointer (11), the surface of the rotary rod (3) is connected with a first magnet (10), and the first magnet (10) is close to the rotary seat (14);

the upper portion in body (1) is connected and is ended shelves (4), the shape of ending shelves (4) on is the toper, upper guide arm (6) is connected in ending shelves (4) activity on going up, upper guide arm (6) are located the centre of a circle department of ending shelves (4) on going up, the upper surface of float (7) is connected to the lower extreme of going up guide arm (6), the upper surface of lower guide arm (8) is connected to the lower surface of float (7), the internal surface of ending shelves (5) under the surface swing joint of lower guide arm (8), the surface of ending shelves (5) down connect in the interior lower surface of body (1), second magnet (9) is connected to the surface of float (7).

2. The variable area flow meter of claim 1, wherein: and a plurality of through grooves are formed in the surfaces of the upper stop (4) and the lower stop (5).

3. The variable area flow meter of claim 1, wherein: a plurality of air chambers (12) are arranged in the floater (7).

4. The variable area flow meter of claim 1, wherein: and the upper end and the lower end of the pipe body (1) are provided with flange plates.

5. The variable area flow meter of claim 1, wherein: the upper part of the first magnet (10) is an N pole, the lower part of the first magnet is an S pole, the upper part of the second magnet (9) is an S pole, and the lower part of the second magnet is an N pole.

6. The variable area flow meter of claim 1, wherein: the dial plate (2) is T-shaped, and the dial plate (2) comprises a dial plate body and a horizontally placed placing pipe.

7. The variable area flow meter of claim 1, wherein: the outer shape of the floater (7) is a T-shaped structure.

8. The variable area flow meter of claim 1, wherein: the middle connecting pipe (13) on the inner wall of the pipe body (1) is a conical pipe.