CN212007346U - Flowmeter with adjustable metering precision - Google Patents

Abstract

The utility model relates to a measurement accuracy adjustable flowmeter, which comprises a housin, rotator and apron, the casing has the water inlet and the delivery port of cavity and intercommunication cavity, the rotator has pivot and rotating vane, a serial communication port, still include the rotary disk and be located the adjust knob in the casing outside, the rotary disk has the different trompil in a plurality of apertures, the casing is formed with the recess of intercommunication water inlet and delivery port, the rotary disk sets up in the recess with rotating, each trompil is located the recess, it is connected with the first end of the body of rod to adjust rotatory, body of rod second end sets up the central point at the rotary disk and puts. After the water inlet of the flowmeter is communicated with an external water source, the adjusting knob is rotated to enable the rotating disc to rotate, the openings of the rotating disc rotate along with the rotating disc, after the openings with smaller apertures are aligned and communicated with the water inlet, water flow entering the cavity is smaller, the water flow flowing to the outer side of the flowmeter through the water outlet is smaller, and the water flow flowing into and out of the flowmeter is accurately controlled through the rotating adjusting knob.

Description

Flowmeter with adjustable metering precision

Technical Field

The utility model relates to a flowmeter field especially relates to a measurement accuracy adjustable flowmeter.

Background

The flow meter is a common device for measuring the liquid flow, and is widely applied to various liquid measuring fields. After a shell mold of the existing flowmeter is opened, a water inlet and a water outlet mold on the shell cannot be adjusted again, and even cannot be adjusted by a user after leaving a factory. Because the precision and the rotating speed of the flowmeter are related to the aperture sizes of the water inlet and the water outlet of the flowmeter, once the sizes of the water inlet and the water outlet on the flowmeter shell are determined in the process of profiling, the precision of the flowmeter cannot be adjusted again subsequently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a measurement accuracy adjustable flowmeter is provided to above-mentioned prior art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: an adjustable-measurement-accuracy flowmeter comprising:

the shell is provided with a cavity and a water inlet and a water outlet which are communicated with the cavity;

the rotating body is positioned in the cavity of the shell and is provided with a rotating shaft and rotating blades capable of rotating around the rotating shaft, and one end of the rotating shaft is fixed at the bottom of the cavity;

the cover plate is matched and assembled with the shell;

it is characterized by also comprising:

a rotating disk having a plurality of openings with different apertures; the shell is provided with grooves which are respectively communicated with the water inlet and the water outlet, the rotating disc is rotatably arranged in the grooves, and the openings are positioned in the grooves and at least provided with openings which can be communicated with the water inlet and the water outlet after the rotating disc rotates;

and the adjusting knob is positioned on the outer side of the shell and is connected with the first end of a rod body, and the second end of the rod body is arranged at the center of the rotating disk.

After a water inlet of the flowmeter is communicated with an external water source, the rotating disc is driven by the rod body to rotate by rotating the adjusting knob, and the holes on the rotating disc rotate along with the rotating disc; when the opening with the smaller aperture on the rotating disc is aligned and communicated with the water inlet of the flowmeter, the water flow entering the cavity is smaller, the water flow flowing into the flowmeter is conveniently and accurately controlled by rotating the adjusting knob, the impact force of the small-flow water flow on the rotating blades is smaller, and the rotating speed of the rotating blades is smaller; when the adjusting knob is rotated again, after the open pore with the larger aperture on the rotating disk is aligned and communicated with the water inlet of the flowmeter, the water flow entering the cavity at the moment is larger, the control accuracy of the water flow flowing into the flowmeter is reduced, the impact force of the large-flow water flow to the rotating blades is larger, and the rotating speed of the rotating blades is larger.

In order to avoid the leakage of water into the cavity, in the flow meter of the present invention, a seal gasket is provided between the cover plate and the case.

In particular to the design of the openings of the flowmeter, the openings of the flowmeter are uniformly positioned on the periphery of the center of the rotating disk. For example, the openings are circular holes, and the centers of the openings are located on the same circle with the center of the rotating disk as the center of the circle.

In order to allow the rotary plate to rotate smoothly under the adjustment of the adjusting knob, in the flowmeter, the rotary plate is provided with a central opening, and the second end of the rod body is fixed in the central opening.

Of course, for practical needs of detecting the rotating speed of the rotating blades in the flowmeter, a hall element for detecting the rotating speed of the rotating blades can be arranged on the cover plate.

Compared with the prior art, the utility model has the advantages of: the groove is formed in the shell of the flowmeter, the rotating disc with the openings with different aperture sizes is arranged in the groove, and after the water inlet of the flowmeter is communicated with an external water source, the rotating disc is driven by the rod body to rotate by rotating the adjusting knob, and the openings on the rotating disc rotate along with the rotating disc; when the opening with the smaller aperture on the rotating disk is aligned and communicated with the water inlet of the flowmeter, the water flow entering the cavity at the moment is smaller, and the water flow flowing out of the shell flowmeter through the water outlet is also smaller, so that the water flow flowing into the flowmeter is more accurately controlled by utilizing the adjusting knob on the outer side of the rotating shell, and the rotating speed of the rotating blades in the flowmeter is reduced at the moment; when the adjusting knob is rotated again, after the open pore with the larger aperture on the rotating disk is aligned and communicated with the water inlet of the flowmeter, the water flow entering the cavity at the moment is larger, the rotating speed of the rotating blades in the flowmeter is increased, and the control accuracy of the water flow flowing into the flowmeter is reduced at the moment.

Drawings

FIG. 1 is a schematic view of a flow meter in the present embodiment;

FIG. 2 is a schematic diagram of an exploded view of the flowmeter of FIG. 1;

FIG. 3 is a schematic structural view of a rotating body;

FIG. 4 is a schematic structural view of a rotary disk;

fig. 5 is a schematic view showing a state where the rotating disk is disposed on the housing.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, the embodiment provides a flowmeter with adjustable metering accuracy, including:

the device comprises a shell 1 and a water outlet, wherein the shell 1 is provided with a cavity 10, and the shell 1 is provided with a water inlet 11 and a water outlet 12 which are communicated with the cavity 10;

a rotating body 2 positioned in the cavity 10 of the housing 1, the rotating body 2 having a rotating shaft 21 and a rotating blade 22 capable of rotating around the rotating shaft 21, one end of the rotating shaft 21 being fixed at the bottom of the cavity 10;

the cover plate 3 is matched and assembled with the shell 1, and a sealing gasket 7 is arranged between the cover plate 3 and the shell 1; the cover plate 3 is provided with a Hall element 8 for detecting the rotating speed of the rotating blade 22;

a rotating disc 4 having a central opening 40 and a plurality of openings 41 with different diameters and uniformly located at the periphery of the center of the rotating disc, as shown in fig. 4, each opening 41 in this embodiment is a circular hole, and the centers of the openings 41 are located on the same circle with the center of the rotating disc as the center of the circle; wherein, referring to fig. 2 and 5, the housing 1 is formed with a groove 13 communicating the water inlet 11 and the water outlet 12, the rotating disc 4 is rotatably disposed in the groove 13, each opening 41 is located in the groove 13 and there are at least an opening 41 communicating the water inlet 11 and an opening 41 communicating the water outlet 12 after the rotating disc 4 rotates;

the adjusting knob 5 is located outside the shell 1, the adjusting knob 5 is connected with a first end of a rod body 6, and a second end of the rod body 6 is fixed in the central opening 40 of the rotating disk 4.

The groove 11 is arranged on the shell 1 of the flowmeter, the rotating disc 4 with the openings 41 with different aperture sizes is arranged in the groove 11, after the water inlet 11 of the flowmeter is communicated with an external water source, the rotating disc 4 is driven by the rod body 6 to rotate by rotating the adjusting knob 5, and the openings 41 on the rotating disc 4 rotate along with the rotating disc; when the opening 41 with the smaller aperture on the rotating disk 4 is gradually aligned and communicated with the water inlet 11 of the flowmeter, the water flow entering the cavity 10 at the moment is smaller, the water flow flowing out of the flowmeter through the water outlet 12 is also smaller, and the rotating speed of the rotating blades 22 in the flowmeter is reduced, so that the water flow flowing into the flowmeter is more accurately controlled by rotating the adjusting knob 5 on the outer side of the shell 1, and the rotating speed of the rotating blades is also adjusted; when the adjusting knob 5 is turned again to make the opening 41 with a larger aperture on the rotating disk 4 aligned and communicated with the water inlet 11 of the flowmeter, the water flow entering the cavity 10 at this time is larger, the rotating speed of the rotating blades 22 in the flowmeter is increased, the control accuracy of the water flow flowing into the flowmeter is reduced at this time, and the rotating speed of the rotating blades is adjusted.

In addition, when the two openings 41 on the rotating disk 4 are gradually communicated with the water inlet 11 and the water outlet 12 of the shell respectively, at this time, a gap which is communicated with each other is also gradually formed between the first opening 41 and the water inlet 11 and between the second opening 41 and the water outlet 12, at this time, the corresponding openings are not completely communicated with the water inlet 11 and the water outlet 12, of course, the water flow entering the flow meter cavity through the water inlet 11 and the gap is very small in this state, and the water flow flowing out of the flow meter cavity through the water outlet 12 is also very small, so that the effect of adjusting the water inflow and the water outflow of the flow meter through the rotating disk 4 is achieved, and the metering accuracy of the flow meter is further improved.

Claims (6)

1. An adjustable-measurement-accuracy flowmeter comprising:

the water-saving device comprises a shell (1) and a water outlet, wherein the shell (1) is provided with a cavity (10), and the shell (1) is provided with a water inlet (11) and a water outlet (12) which are communicated with the cavity (10);

the rotating body (2) is positioned in the cavity (10) of the shell (1), the rotating body (2) is provided with a rotating shaft (21) and rotating blades (22) capable of rotating around the rotating shaft (21), and one end of the rotating shaft (21) is fixed at the bottom of the cavity (10);

the cover plate (3), the cover plate (3) is assembled with the shell (1) in a matching way;

it is characterized by also comprising:

a rotating disk (4) having a plurality of openings (41) with different apertures; the shell (1) is provided with grooves (13) which are respectively communicated with the water inlet (11) and the water outlet (12), the rotating disc (4) is rotatably arranged in the grooves (13), and the openings (41) are positioned in the grooves (13) and at least provided with openings which can be communicated with the water inlet (11) and the water outlet (12) after the rotating disc (4) rotates;

the adjusting knob (5) is located on the outer side of the shell (1), the adjusting knob (5) is connected with the first end of a rod body (6), and the second end of the rod body (6) is arranged in the center of the rotating disk (4).

2. The flowmeter with adjustable metering accuracy according to claim 1, characterized in that a sealing gasket (7) is arranged between the cover plate (3) and the housing (1).

3. The flowmeter of claim 1 wherein the openings (41) are located uniformly about the center of the rotating disk (4).

4. The flowmeter of claim 3 wherein said openings (41) are circular holes, and the centers of said openings (41) are located on the same circle centered on the center of said rotating disk.

5. The flowmeter of any of claims 1 to 4 wherein the rotary plate (4) has a central opening (40) and the second end of the stem (6) is secured within the central opening (40).

6. The flowmeter with adjustable metering precision according to any one of claims 1 to 4, characterized in that a Hall element (8) for detecting the rotation speed of the rotating blade (22) is arranged on the cover plate (3).

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