CN211373718U - Metering mechanism - Google Patents

Abstract

A metering mechanism comprises a gear box, an impeller body, an impeller box body and a water filter screen body, wherein the gear box is hollow, the impeller body is arranged below the gear box, the impeller box body is arranged below the impeller body and is divided into an upper part of the impeller box body and a lower part of the impeller box body, a plurality of positioning columns are arranged on the upper part of the impeller box body through tight fit, water inlets with the same quantity as the positioning columns on the upper part of the impeller box are arranged on the lower part of the impeller box body, the size of the water inlets can be controlled by selecting the positioning columns on the upper part of the impeller box with different heights and adjusting the positions of the upper part and the lower part of the impeller box, the water filter screen body is arranged on the lower part of the impeller box body, an impeller main shaft is embedded in an impeller during injection molding, the upper part of the impeller box and the impeller, the bottom surface of the water filter screen body is provided with a first filter hole along the flow guide surface, and the upper edge of the water filter screen body is provided with an annular bulge.

Description

Metering mechanism

Technical Field

The utility model relates to a water gauge part class technical field especially relates to a metering mechanism.

Background

The structures of water outlet and water inlet of the metering mechanism are fixed at present, and the water flow cannot be adjusted by changing the structure to meet the requirements of different flow performances.

The utility model discloses a metering mechanism of regulating position control discharge and performance will be provided.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a metering mechanism who solves above-mentioned problem.

The utility model provides a metering mechanism, its characterized in that, includes gear box, impeller body, impeller box body and water strainer body, the inside cavity of gear box, the gear box below is provided with impeller body, the impeller body below is provided with impeller box body, impeller box body divide into impeller box body upper portion and impeller box body lower part, connects through the tight fit, the whole upper portion of impeller box is provided with a plurality of reference columns, impeller box lower part is provided with the water inlet the same with impeller box upper portion reference column quantity, can control the size of water inlet area through the height of reference column and the cooperation of lower part water inlet, impeller box body lower part is provided with the water strainer body.

Compared with the scheme, the impeller body comprises the impeller main shaft and the impeller, and the impeller main shaft is embedded in the impeller during injection molding.

Compared with the scheme, the matching of the upper part of the impeller box and the lower part of the impeller box is tight fit, and the matching position can be changed according to a fixed rule.

Compared with the scheme, the middle part of the bottom surface of the water filter screen body is bulged downwards to form a flow guide surface, a liquid outlet is formed in the center of the flow guide surface, and a plurality of first filtering holes are formed in the bottom surface of the water filter screen body along the flow guide surface.

Compared with the scheme, the side wall of the water filtering net body is provided with a plurality of second filtering holes.

Compared with the scheme, the first filtering holes are circular, and the second filtering holes are square.

Compared with the scheme, the water filter screen is further provided with the annular bulge at the upper edge of the water filter screen body.

Has the advantages that: the position of the upper part and the lower part of the impeller box is adjusted and the area of the water inlet is controlled, so that the position with the best performance of the metering mechanism is adjusted and the requirements of different flows of the water meter are met.

Drawings

Fig. 1 is a split view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a disassembled view of the impeller case of the present invention.

Fig. 4 is a perspective view of the present invention.

Fig. 5 is a perspective view of the present invention.

Detailed Description

The present invention will be further described with reference to the drawings, but the present invention is not limited to the following embodiments.

As shown in fig. 1-5, a metering mechanism comprises a gear box 1, an impeller body 2, an impeller box body 3 and a water strainer body 4, wherein the gear box 1 is hollow, the impeller body 2 is arranged below the gear box 1, the impeller box body 3 is arranged below the impeller body 2, and the water strainer body 4 is arranged below the impeller box body 3.

The impeller body 2 comprises an impeller main shaft 201 and an impeller 202, and the impeller main shaft 201 is embedded in the impeller 202 during injection molding.

The impeller box body 3 is divided into an upper impeller box part 301 and a lower impeller box part 302, the upper impeller box part 301 is provided with a plurality of positioning columns 303 through tight fit, the lower impeller box part 302 is provided with water inlets 304 with corresponding quantity, and the water flow can be controlled by adjusting the sizes of the water inlets 304 through matching different positions and the heights of the positioning columns.

The middle part of the bottom surface of the water filter screen body 4 is bulged downwards to form a flow guide surface 401, a liquid outlet 402 is formed in the center of the flow guide surface 401, a plurality of first filtering holes 403 are formed in the bottom surface of the water filter screen body 1 along the flow guide surface 401, and a plurality of second filtering holes 404 are formed in the side wall of the water filter screen body 4.

The first filtering holes 403 are circular, and the second filtering holes 404 are square.

An annular bulge 405 is arranged at the upper edge of the water filtering net body 4.

Compared with the prior art, impeller box lower part 302 water inlet 304 configures a kind of water strainer with water conservancy diversion face 401 and can make rivers obtain the buffering, and stable rivers are favorable to improving metering mechanism's performance.

The height of the positioning column 303 on the upper part 301 of the impeller box can be directly matched with the water inlet 304 on the lower part 302 of the impeller box, the area of the water inlet 304 of the impeller box can be adjusted and changed, namely, the water inlet inflow of the water inlet is adjusted, and the requirements of different flows can be met.

The upper part 301 and the lower part 302 of the impeller box can be changed according to a fixed rule, namely the number of the positioning columns 303 and the water inlets 304 of the lower part 302 of the impeller box is changed, namely the corresponding change amount of the position change of the upper part 301 and the lower part 302 of the impeller box. That is to say: the performance curves of various metering mechanisms can be adjusted at different positions, and the position with the best performance can be adjusted according to temperature change and different positions.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (7)

1. A metering mechanism is characterized by comprising a gear box (1), an impeller body (2), an impeller box body (3) and a water filter screen body (4), the gear box (1) is hollow, an impeller body (2) is arranged below the gear box (1), an impeller box body (3) is arranged below the impeller body (2), the impeller box body (3) is divided into an upper part (301) of the impeller box body and a lower part (302) of the impeller box body, through tight fit, a plurality of positioning columns (303) are arranged on the upper part (301) of the impeller box body, the lower part (302) of the impeller box body is provided with water inlets (304) with the same number as the positioning columns of the upper part (301) of the impeller box body, the upper positioning columns of the impeller boxes with different heights can be selected to be matched with the lower water inlet to control the size of the water inlet (304), the lower part (302) of the impeller box body is provided with a water filter screen body (4).

2. A metering mechanism according to claim 1, wherein the impeller body (2) comprises an impeller spindle (201) and an impeller (202), the impeller spindle (201) being embedded in the impeller (202) during injection molding.

3. A dosing mechanism according to claim 1, wherein the engagement of the upper part (301) of the impeller housing body and the lower part of the impeller housing is by a screw-tight engagement.

4. The metering mechanism of claim 1, wherein a middle portion of the bottom surface of the water strainer body (4) is bulged downward to form a flow guiding surface (401), a liquid outlet (402) is formed in a central portion of the flow guiding surface (401), and a plurality of first filtering holes (403) are formed in the bottom surface of the water strainer body (4) along the flow guiding surface (401).

5. A metering mechanism according to claim 4, wherein the side wall of the water strainer body (4) is provided with a plurality of second filtering holes (404).

6. A dosing mechanism according to claim 5, characterized in that the first filter aperture (403) is circular in shape and the second filter aperture (404) is square in shape.

7. A dosing mechanism according to claim 1, wherein an annular protrusion (405) is provided at the upper edge of the water strainer body (4).

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