Water meter impeller box assembly and vertical helical vane type water meter

Abstract

The water meter impeller box assembly and the vertical helical vane type water meter have the advantages that a plurality of open grooves which are evenly distributed in the circumferential direction are formed in the outer circle of a rectifier box body, the upper end face of an adjusting ring serving as an adjusting piece is attached to the bottom face of the outer circle of the rectifier box body, and the upper end of the adjusting ring is connected with hooks which correspond to the open grooves one to one. The hook penetrates into the open groove and is hung in the open groove, so that the adjusting ring can be quickly assembled with the rectifier and is not easily separated, the adjusting ring can rotate relative to the rectifier, and an adjusting groove, formed in one side of the hook, of the adjusting ring can be used for being communicated with the open groove to form a flow adjusting channel; the adjusting pieces arranged at the bottom and on the other side of the hook can close or open the open grooves part by part when the adjusting ring rotates relative to the rectifier so as to control the water flow amount of the flow adjusting channel, so that an inherent error curve of the water meter parallelly deviates to be within an error range allowed in the national standard.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter parts, and specifically relates to a water meter impeller box assembly and a vertical helical vane water meter. Background Art

[0002] A water meter generally refers to an instrument for measuring and accumulating the fluid volume. The water meters on the market mainly include rotary vane water meters and helical vane water meters.

[0003] The helical vane water meter is used to measure the total fluid volume of a large-flow pipeline and has the advantage of small pressure loss. The vertical helical vane water meter mainly consists of a meter housing, a movement, and an internal filter. As the most important component of the water meter, the movement mainly consists of an indicating device, a rectifier, a vertical helical vane impeller, and an adjusting plate. The quality of the movement directly determines the flow performance of the water meter. Among them, the adjusting plate is used to parallelly shift the error curve of the water meter to within the maximum allowable error range specified in the national standard, thereby improving the qualification rate of the product. However, the existing adjusting plate is fixed on the rectifier by screws and requires tools for operation, which is rather troublesome to adjust, and the angle control of the adjusting plate is not precise enough, so it urgently needs to be improved. Summary of the Utility Model

[0004] One technical problem to be solved by this application is to overcome the defects of the above-related technologies and provide a water meter impeller box assembly and a vertical helical vane water meter with simple assembly, convenient adjustment, and precise adjustment.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: A water meter impeller box assembly includes a rectifier containing a helical vane impeller and an adjusting member, and the adjusting member is assembled on the rectifier; a plurality of slots are provided on the outer circumference of the rectifier box body, and the plurality of slots are evenly distributed in a circumferential manner; the adjusting member is an adjusting ring, the upper end surface of the adjusting ring is in contact with the bottom surface of the outer circumference of the rectifier box body, a hook corresponding to each slot is connected to the upper end of the adjusting ring, the hook penetrates into the slot and is hooked in the slot, an adjusting groove for communicating with the slot to form a flow adjustment channel is provided on one side of the hook of the adjusting ring, and adjusting pieces for gradually closing or opening the slot to control the water flow amount of the flow adjustment channel when the adjusting ring rotates relative to the rectifier are provided at the bottom and the other side of the hook of the adjusting ring.

[0006] Compared with the related art, the water meter impeller box assembly of the present application has the following advantages: a plurality of circumferentially evenly distributed slots are provided on the outer circle of the rectifier box body, the upper end face of the adjusting ring as an adjusting member is in contact with the outer circle bottom face of the rectifier box body, and the upper end is connected with a hook corresponding to the slot one by one, the hook is inserted into the slot and hung in the slot, so that the adjusting ring can be quickly assembled with the rectifier without being easily detached, and the adjusting ring can be rotated relative to the rectifier, the adjusting slot provided on one side of the hook of the adjusting ring is used to communicate with the slot to form a flow adjustment channel, and the adjusting plates provided on the bottom and the other side of the hook can control the water flow rate of the flow adjustment channel by closing or opening the slots one by one when the adjusting ring rotates relative to the rectifier, so that the inherent error curve of the water meter is parallelly offset to within the error range allowed in the national standard.

[0007] Preferably, the gap between the inner side of the hook and the inner wall of the slot is greater than or equal to the radial outward protrusion length of the hook hooking part, so as to facilitate observation of whether the hook is hooked in place or whether the hooking part is damaged during assembly.

[0008] Preferably, the outer bottom of the outer circle of the rectifier box body is provided with a plurality of grooves distributed at equal intervals, and the outer circumference of the adjustment ring is provided with an upwardly convex elastic protrusion; the arc angle formed by the plurality of grooves is the same as the movable angle of the hook in the slot; the elastic protrusion fits with a certain groove to limit the adjustment ring and the rectifier to limit the amount of water passing through the flow adjustment channel. It is used to accurately control the water passing through the flow adjustment channel and adjust it quantitatively in different levels.

[0009] Preferably, there are 10 grooves. The water flow rate of the flow adjustment channel is divided into 10 levels, which can accurately parallel shift the inherent error curve of the water meter to within the error range allowed by the national standard.

[0010] Preferably, a downwardly convex shifting block is connected to the bottom of the adjusting ring to facilitate shifting of the adjusting ring.

[0011] Preferably, the shifting block is close to the raised portion of the elastic projection. When the adjusting ring is conveniently shifted, a relatively small shifting force is used to make the elastic projection come out of the matched groove.

[0012] Another technical problem to be solved by the present application is to provide a vertical propeller-type water meter, including a movement, wherein the movement includes an indicating device, a filter screen and the above-mentioned water meter impeller box assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the vertical screw-wing water meter movement of the utility model.

[0014] Figure 2 It is an assembly diagram of the indicating device, the vertical screw-wing impeller, the rectifier and the regulating ring of the utility model when the water flow rate is in the maximum state.

[0015] Figure 3 The left and right are the elevation views of the vertical screw-wing impeller, rectifier and regulating ring in the maximum water flow state and the 40% state respectively.

[0016] Figure 4 It is an enlarged cross-sectional view of the assembly state of the regulating ring hook and the rectifier slot of the present utility model.

[0017] Figure 5 It is an enlarged view of the elastic protrusion of the regulating ring fitting with the outer circumferential groove of the rectifier in the maximum water flow state of the present utility model. Specific embodiments

[0018] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust it according to needs to adapt to specific application scenarios.

[0019] This embodiment is a vertical screw-wing water meter, including a movement as shown in Figure 1 The movement includes an indicating device 1, a vertical screw-wing impeller 2, a filter screen 5, and a water meter impeller box assembly composed of a rectifier 3 and a regulating ring 4. The regulating ring 4, as an adjusting part, can rotate relative to the rectifier 3 to shift the inherent error curve of the water meter parallelly within the allowable error range in the national standard.

[0020] In this embodiment, as shown in Figures 2 to 5 The bottom of the rectifier 3 box body is provided with evenly distributed rectifying ribs 3.1, and several slots 3.3 are provided on the outer circle 3.2 of the rectifier 3 box body, and the several slots 3.3 are evenly distributed in a circumferential manner; the regulating ring 4 is rotatably hung on the rectifier 3, and the upper end of the regulating ring 4 is connected with hooks 4.1 corresponding to the slots 3.3 one by one. The hooks 4.1 penetrate into the slots 3.3 and are hung in the slots 3.3. The regulating ring 4 is provided with an adjusting groove 4.3 on one side of the hook 4.1 for communicating with the slot 3.3 to form a control flow adjustment channel 6. The regulating ring 4 is provided with adjusting pieces 4.2 at the bottom and the other side of the hook 4.1 to gradually close or open the slot 3.3 when the regulating ring 4 rotates relative to the rectifier 3, so as to control the water flow rate of the control flow adjustment channel 6. The control flow adjustment channel 6 communicates the upper and lower spaces of the outer circle of the rectifier 3 box body; the thickness of the hook 4.1 is slightly smaller than the width of the slot 3.3 to allow the hook 4.1 to undergo elastic deformation when inserted into the slot 3.3 and reset after hanging. The hooked part of the hook 4.1 protrudes radially outwards. Of course, the hooked part of the hook 4.1 can also protrude radially inwards, and a deformation space needs to be left between the inner side of the hook 4.1 and the inner wall of the slot 3.3, and between the outer side of the hook 4.1 and the outer wall of the slot 3.3.

[0021] Preferably, the arc angle formed by the adjustment groove 4.3 and the adjacent hook 4.1 is the same as the arc angle of the slotted groove 3.3, and the arc angle of the adjustment piece 4.2 is greater than or equal to the arc angle of the slotted groove 3.3.

[0022] As an improvement, a plurality of grooves 3.4 are provided at equal intervals on the outer peripheral bottom of the outer circle 3.2 of the rectifier 3 box body. An upward convex elastic protrusion 4.4 is provided on the outer periphery of the adjustment ring 4. The elastic protrusion 4.4 fits with a certain groove 3.4 to limit the adjustment ring 4 and the rectifier 3 to limit the water flow rate of the flow adjustment channel 6. And the arc angle formed by the plurality of grooves 3.4 is the same as the movable angle of the hook 4.1 in the slotted groove 3.3. Here, the arc angle formed by the plurality of grooves 3.4 is specifically the plane angle formed by the centers of the grooves 3.4 at both ends and the axis of the rectifier 3.

[0023] The number of the grooves 3.4 can be set according to actual requirements. In this embodiment, there are 10 grooves 3.4, and the water flow rate of the adjustable flow adjustment channel 6 can be adjusted in 10 gears, namely 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% (fully flowing). In addition, there is also a gear of 0% (fully blocked). At this time, the elastic protrusion 4.4 disengages from the groove 3.4 and abuts against the outer peripheral bottom of the outer circle 3.2 of the box body. One side of the hook 4.1 forms a limit with one end of the slotted groove 3.3, and the hook 4.1 and the adjustment piece 4.2 on the other side completely close the corresponding slotted groove 3.3, that is, the flow adjustment channel 6 is closed.

[0024] Preferably, a downward convex dial 4.5 is connected to the bottom of the adjustment ring 4, and the convex part of the dial 4.5 is close to the elastic protrusion 4.4. The dial can also be called a handle. When there is a single one, it can be pinched with two fingers, or it can be set to 3 to 5, and the fingers can be separated and dialed.

[0025] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the technical field of the present application within the technical scope disclosed by the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A water meter impeller box assembly, comprising a rectifier with a propeller impeller installed therein and an adjusting member, wherein the adjusting member is assembled on the rectifier, and is characterized in that: The outer circle of the rectifier box body is provided with a plurality of slots, and the plurality of slots are evenly distributed around the circumference; the adjusting member is an adjusting ring, the upper end surface of the adjusting ring is in contact with the outer circle bottom surface of the rectifier box body, the upper end of the adjusting ring is connected with a hook corresponding to the slot one by one, the hook penetrates into the slot and is hung in the slot, the adjusting ring is provided with an adjusting slot on one side of the hook for communicating with the slot to form a flow adjustment channel, and the adjusting ring is provided with an adjusting sheet at the bottom and the other side of the hook for closing or opening the slots one by one when the adjusting ring rotates relative to the rectifier to control the water flow through the flow adjustment channel.

2. A water meter impeller box assembly according to claim 1, characterized in that: The gap between the inner side of the hook and the inner wall of the slot is greater than or equal to the radially outward protruding length of the hooking portion of the hook.

3. A water meter impeller box assembly according to claim 2, characterized in that: A plurality of grooves are arranged at equal intervals at the bottom of the outer circumference of the rectifier box body, and an upwardly convex elastic protrusion is arranged on the outer circumference of the adjustment ring; the arc angle formed by the plurality of grooves is the same as the movable angle of the hook in the slot; the elastic protrusion fits with a certain groove to limit the position of the adjustment ring and the rectifier to limit the amount of water passing through the flow adjustment channel.

4. A water meter impeller box assembly according to claim 3, characterized in that: There are 10 grooves.

5. A water meter impeller box assembly according to claim 3, characterized in that: The bottom of the adjusting ring is connected with a downwardly convex shifting block.

6. A water meter impeller box assembly according to claim 5, characterized in that: The shift block is close to the raised portion of the elastic protrusion.

7. A vertical propeller water meter, comprising a movement, characterized in that: The movement comprises an indicating device, a filter and a water meter impeller box assembly as claimed in any one of claims 1 to 6.

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