CN113447091B

CN113447091B - Flow detection device

Info

Publication number: CN113447091B
Application number: CN202110808581.1A
Authority: CN
Inventors: 黄晓峰; 叶高峰; 胡迪高
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-09-09
Anticipated expiration: 2041-07-16
Also published as: CN113447091A

Abstract

The present invention relates to a flow rate detection device. The device comprises a flow valve core body, wherein a water inlet part is arranged at the upper part of the flow valve core body, a water outlet is arranged at the middle part of the flow valve core body, and a positioning hole is arranged at the bottom end of a blind hole cavity inside the lower end of the flow valve core body; a spiral flow guide disc is arranged on the inner upper surface of the flow valve core body, a generally fusiform rotating body is arranged at the lower end of the spiral flow guide disc, and a rotating disc opposite to the spiral direction of the spiral flow guide disc is arranged at the upper part of the rotating body; the needle point part at the bottom end of the rotating body is rotatably fixed in the positioning hole; the rotator is also fixed with a special-shaped disc magnet body. The device provided by the invention has the advantages that the rotating disc is effectively pushed to rotate by spirally guiding the fluid, the special-shaped disc magnet body is positioned at the blind hole position of the valve core body, the impact and corrosion of the fluid are reduced, the detection precision and the service life are ensured, in addition, the flow of the inflowing fluid is regulated, the flow limitation is relieved, the flow fluctuation is reduced, and the stability and the precision of the metering are further improved. The product is novel in structure, practical in design and has market popularization value.

Description

Flow detection device

Technical Field

The present invention relates to a flow rate detection device.

Background

The measurement and detection of small volume fluid flow rates has many applications, including applications in residential and commercial, industrial plumbing applications. For example in the heating, water supply field, detecting the supply of water supply, or as in the chemical industry. Accurate detection of flow also provides a monitoring effect on fluid discovery and leakage prevention. In addition, the accurate measurement also reduces the loss for the flow supplier and carries out better monitoring.

At present, the flow detection mode is more, for example, as shown in "ultrasonic water flow detection device, water pump, water heater" with publication number CN211042353U, the scheme adopts ultrasonic waves, refraction plates and fixed flow aperture to determine the liquid flow. There are also devices for measuring flow by using impeller, such as most of water meters, and the structure of "reversible hot water meter" with publication number CN2405188Y, and the "flow meter" with publication number CN204722851U, on the basis of the existing structure of impeller water meter, the mechanical measurement display mode is improved to use a sensing device to sense the magnetic rotating blade or rotating body to sense the flow, the measurement mechanical structure is more concise, the accuracy is higher, and the range for detecting the type of fluid is also larger. But also has the defects that the rotating body is in impact contact with the fluid for a long time, particularly the fluid has water hammer phenomenon or flow fluctuation, the rotating body is corroded and deformed, and the long-term metering precision is influenced; transient flow fluctuations also present metering hysteresis and accuracy misalignments.

Disclosure of Invention

Aiming at the existing situation, the invention provides a novel flow measuring device, which changes the structure of a rotating body, avoids the direct impact of fluid on a metering magnet through the structural arrangement, stabilizes the operation of the metering device, simultaneously creatively limits and relieves the flow of inflow, reduces the flow fluctuation and further improves the stability and the accuracy of metering.

In order to achieve the purpose, the invention adopts the following technical scheme:

a flow detection device comprises a flow valve core body, wherein a water inlet part is arranged at the upper part of the flow valve core body, a water outlet is arranged at the middle part of the flow valve core body, and a positioning hole is formed in the bottom end of a blind hole cavity inside the lower end of the flow valve core body; a spiral flow guide disc is arranged on the inner upper surface of the flow valve core body, a generally fusiform rotating body is arranged at the lower end of the spiral flow guide disc, and a rotating disc opposite to the spiral direction of the spiral flow guide disc is arranged at the upper part of the rotating body; the needle point part at the bottom end of the rotating body is rotatably fixed in the positioning hole; the rotator is also fixed with a special-shaped disc magnet body.

The scheme of the invention can also be as follows:

the rotating body and the rotating disk are of an integral structure and rotate synchronously.

The special-shaped disc magnet body is positioned in a blind hole cavity inside the lower end of the flow valve core body.

The inner hole of the special-shaped disc magnet body is provided with a notch, and the notch is matched and fixed with the convex rib of the rotating body.

The special-shaped disc magnet body is provided with more than two notch structures which are of symmetrical structures or circumferentially and uniformly distributed structures.

The lower part of the spiral flow guide disc is provided with a fixed column which is coaxially and rotatably fixed with a column hole at the top end of the rotating body.

The water inlet part on the upper part of the flow valve core body is provided with a valve core cap, and a flow regulator is arranged in the valve core cap.

The flow regulator is provided with a regulating body, a regulating forming body and an elastic material between the regulating forming body and the elastic material, wherein the elastic material is pressed and deformed to regulate the area of a flow passage.

And a filter screen is arranged between the flow regulator and the spiral flow guide disc.

The flow valve core body is loaded on the fluid valve body, and the outside of the flow valve core body is provided with a fixing thread and a connecting and sealing structure.

According to the flow detection device, the rotating disc is more effectively pushed to rotate and the special-shaped disc magnet body is driven to be linked through spiral flow guide of the fluid, the special-shaped disc magnet body is located at the blind hole of the valve core body, so that fluid impact and corrosion are reduced, the detection precision and the service life are ensured, the flow of the inflowing fluid is adjusted, the flow is limited and relieved, flow fluctuation is reduced, and the stability and the precision of metering are further improved. The product is novel in structure, practical in design and has market popularization value.

Drawings

Fig. 1 is a schematic perspective view of a flow rate detection device according to the first embodiment;

fig. 2 is a schematic cross-sectional structural view of a flow rate detection device according to the first embodiment;

fig. 3 is an exploded perspective view illustrating a flow rate detecting device according to the first embodiment;

fig. 4 is a schematic structural diagram of the special-shaped disc magnet of the first embodiment;

fig. 5 is a schematic structural diagram of the shaped disc magnet body of the second embodiment;

fig. 6 is a schematic structural diagram of the special-shaped disc magnet of the third embodiment.

In the figure: the flow valve core comprises a flow valve core body 1, a water inlet part 10, a water outlet 11, a blind hole cavity 12, a positioning hole 13, a fixed thread 14, a connecting sealing structure 15, a spiral guide plate 2, a fixed column 20, an upper guide vane 21, an inner ring wall 22, a rotating body 3, a rotating disc 30, a tip part 31, a convex rib 32, a column hole 33, a lower guide vane 34, a special-shaped disc magnet body 4, an inner hole 40, a notch 41, a valve core cap 5, a flow regulator 6, a regulator body 60, a regulating forming body 61, an elastic material 62 and a filter screen 7.

Detailed Description

The preferred embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, in a first preferred embodiment, a flow rate detection device comprises a flow valve core body 1, a water inlet portion 10 is arranged at the upper part of the flow valve core body 1, a water outlet 11 is arranged at the middle part of the flow valve core body, and a positioning hole 13 is arranged at the bottom end of a blind hole cavity 12 inside the lower end of the flow valve core body 1; a spiral diversion disc 2 is arranged on the inner upper surface of the flow valve core body, a generally fusiform rotating body 3 is arranged at the lower end of the spiral diversion disc 2, and a rotating disc 30 which is opposite to the spiral direction of the spiral diversion disc 2 is arranged at the upper part of the rotating body 3; the needle point part 31 at the bottom end of the rotating body 3 is rotatably fixed in the positioning hole 13; the rotator 3 is also fixed with a special-shaped disc magnet 4.

The flow detection device is a core component for detecting flow, a water outlet 11 of the flow detection device is horizontally loaded upwards or downwards on the fluid valve body, and the external magnetic inductor is used for inducing the rotation change of the special-shaped disc magnet body 4 to monitor and detect the flow. The flow detection device is externally provided with a fixed thread 14 and a connecting and sealing structure 15, and is actually fixed and sealed with the fluid valve body. The structure that actually fixes and seal with fluid valve body is more, including flange seal, screw thread lock fastening etc.. The non-horizontal position installation, parts such as special-shaped disc magnet body receive influence such as gravity and incline, can have parameter deviation.

The flow detection device of the application is an independent part easy to replace, is modularized, can be conveniently disassembled and assembled from a fluid valve body when being detected abnormally or damaged, realizes replacement, and is different from a water meter valve or other prior arts.

The upper guide vanes 21 of the spiral guide disc 2 and the lower guide vanes 34 of the rotating disc 30 have opposite spiral directions, and can effectively convert the fluid flow kinetic energy to form the rotating power of the rotating body 3; the lower guide vane 34 may be disposed at the same angle as the upper guide vane 21 or perpendicular to the upper guide vane, but the rotation performance and sensitivity are greatly reduced, and the stay and pause are caused.

The rotating body 3 and the rotating disc 30 may be a separate fixed structure; the rotating body 3 and the rotating disk 30 are of an integral structure and rotate synchronously, as shown in the embodiment. The rotating body 3 is made of nylon material, has hydrophobicity, can keep rotating smoothly and lubricating, and can also be made of polyformaldehyde, brass or stainless steel and other materials.

The lower part of the spiral diversion disc 2 is provided with a fixed column 20 which is coaxially and rotatably fixed with a column hole 33 at the top end of the rotating body 3. During operation, the two are in opposite directions of rotation. The spiral flow guide disc 2 is fixed in a limiting mode by an axis fixing point, and the stability of the rotating body 3 is kept due to the coaxial arrangement. In the design of the structure, the traditional guide vane structure is adjusted, the upper guide vane 21 of the spiral guide disc 2 is arranged on the inner ring wall 22, and the fixing column 20 is arranged at the axis position, so that the design has small flow resistance, small influence on liquid pressure and smooth flow. Correspondingly, the lower guide vanes 34 of the rotating body 3 are also designed in corresponding positions.

The special-shaped disc magnet body 4 is positioned in a blind hole cavity 12 in the lower end of the flow valve core body 1. The special-shaped disc magnet body 4 is arranged in the blind hole cavity 12 and avoids the water outlet 11 at the upper part. The blind hole cavity 12 can retain liquid or air in the operation process, so that the impact and corrosion of fluid on the special-shaped disc magnet body 4 are avoided, the detection precision is improved, the service life is prolonged, particularly, the flow detection device is inverted, air is reserved at the upper part of the flow detection device, the adhesion of scale and the like and the damage can be avoided, the rotation resistance is smaller, and the operation of the flow detection device is more reliable.

The traditional flow detection generally focuses on parameters of resistance and aperture in design, changes the existing detection rule, performs flow limiting and relieving on the flow, reduces flow fluctuation, and ensures detection parameters, so that a valve core cap 5 is arranged at a water inlet part 10 at the upper part of a flow valve core body 1, and a flow regulator 6 is arranged in the valve core cap 5. The flow regulator 6 has a function of regulating the cross-sectional area of the flow passage, and when the pressure difference is large, the cross-sectional area through which the fluid passes is reduced, and when the pressure difference is small, the flow cross-sectional area is increased.

The flow regulator 6 is provided with a regulator 60, a regulator molding 61, and an elastic material 62 in the middle of the gap between the regulator molding and the elastic material 62, and the elastic material 62 is deformed by pressure to adjust the flow passage area. The adjusting molded body 61 has a corresponding designed flow cross section, the elastic material 62 is attached to the adjusting molded body 61, and the flow cross section of the covering part is realized to realize adjustment.

A filter screen 7 is arranged between the flow regulator 6 and the spiral diversion disc 2. The accumulation of impurities in the blind hole cavity 12 or the attachment of elements inside the flow rate valve core body 1 is prevented, which affects the rotation rate or stability.

The inner hole 40 of the special-shaped disc magnet body 4 is provided with a notch 41, and the notch 41 is matched and fixed with the convex rib 32 of the rotating body 3. The notch 41 is used for limiting and fixing, and when the valve core body rotates, the external magnetic inductor can also receive the rotation change of magnetic force so as to deduce the revolution of the internal rotating body 3 of the flow valve core body 1, and therefore the liquid flow can be deduced through parameters.

The special-shaped disc magnet body 4 is provided with more than two notches 41 which are of symmetrical structures or circumferentially and uniformly distributed structures. As shown in fig. 4, two symmetrical notches 41 are formed on the special-shaped disc magnet body 4, so that the fixing and the detection are convenient. As shown in fig. 5, three notches 41 are uniformly distributed on the circumference of the special-shaped disc magnet body 4, or as shown in fig. 6, three notches 41 are uniformly distributed on the outer diameter of the special-shaped disc magnet body 4.

The inner hole 40 of the special-shaped disc magnet body 4 is provided with the notch 41, the notch 41 does not stir liquid, the running fluid resistance is small, the rotation is stable and smooth, and the detection precision is high. Of course, the notches 41 could be modified to be bumps or impellers, but the presence of cutting or agitation of the liquid increases the stability and detection noise.

According to the flow detection device, the rotating disc is effectively pushed to rotate and the special-shaped disc magnet body is driven to link through spiral flow guide of the fluid, the special-shaped disc magnet body is located at the blind hole of the valve core body, so that impact and corrosion of the fluid are reduced, the detection precision and the service life are ensured, the flow of the inflowing fluid is adjusted, the flow is limited and relieved, flow fluctuation is reduced, and the stability and the precision of metering are further improved. The product is novel in structure, practical in design and has market popularization value.

Claims

1. A flow detection device comprises a flow valve core body (1), wherein a water inlet part (10) is arranged at the upper part of the flow valve core body (1), a water outlet (11) is arranged at the middle part of the flow valve core body, and a positioning hole (13) is arranged at the bottom end of a blind hole cavity (12) in the lower end of the flow valve core body (1); be equipped with a spiral guiding disk (2) on flow valve core body inside, its characterized in that: the lower end of the spiral flow guide disc (2) is provided with a generally fusiform rotating body (3), and the upper part of the rotating body (3) is provided with a rotating disc (30) which has the opposite spiral direction to the spiral flow guide disc (2); the needle point part (31) at the bottom end of the rotating body (3) is rotatably fixed in the positioning hole (13); the rotating body (3) is also fixed with a special-shaped disc magnet body (4).

2. A flow sensing device according to claim 1, wherein: the rotating body (3) and the rotating disc (30) are of an integral structure and rotate synchronously.

3. A flow sensing device according to claim 1, wherein: the special-shaped disc magnet body (4) is positioned in a blind hole cavity (12) in the lower end of the flow valve core body (1).

4. A flow sensing device according to claim 1, wherein: the inner hole (40) of the special-shaped disc magnet body (4) is provided with a notch (41), and the notch (41) is matched and fixed with the convex rib (32) of the rotating body (3).

5. A flow sensing device according to claim 1 or 4, wherein: the special-shaped disc magnet body (4) is provided with more than two notches (41) which are of a symmetrical structure or a circumferentially and uniformly distributed structure.

6. A flow sensing device according to claim 1, wherein: the lower part of the spiral diversion plate (2) is provided with a fixed column (20) which is coaxially and rotatably fixed with a column hole (33) at the top end of the rotating body (3).

7. A flow sensing device according to claim 1, wherein: the water inlet part (10) at the upper part of the flow valve core body (1) is provided with a valve core cap (5), and a flow regulator (6) is arranged in the valve core cap (5).

8. A flow sensing device according to claim 7, wherein: the flow regulator (6) is provided with a regulating body (60), a regulating forming body (61) and an elastic material (62) in the middle of a gap between the regulating body and the regulating forming body, and the elastic material (62) is deformed under pressure to regulate the area of a flow passage.

9. A flow sensing device according to claim 7, wherein: a filter screen (7) is arranged between the flow regulator (6) and the spiral flow guide disc (2).

10. A flow sensing device according to claim 1, wherein: the flow valve core body (1) is loaded on the fluid valve body, and a fixed thread (14) and a connecting sealing structure (15) are arranged outside the flow valve core body (1).