CN217107458U

CN217107458U - Water pump flow detection structure

Info

Publication number: CN217107458U
Application number: CN202122616506.3U
Authority: CN
Inventors: 金士海; 林荣; 颜成刚
Original assignee: Leo Group Zhejiang Pump Co Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-08-02
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a flow detection structure of a water pump, wherein the water pump comprises a rear end cover, a water outlet pipe is arranged in the rear end cover, and a flow detection device is arranged in the water outlet pipe; the flow detection device comprises a guide vane positioned at one end of the water outlet pipe facing the interior of the water pump, a magnetic induction impeller is rotatably arranged at the rear side of the guide vane in the water outlet pipe, and the axis of the magnetic induction impeller is superposed with the axis of the water outlet pipe; the magnetically inductive impeller is equipped with a corresponding hall element. The utility model discloses an useful part lies in: the detected rotation axis of the impeller is the same as the axis of the water outlet pipe, the radial pressure of water flow on the rotating shaft where the detected impeller is located is small, the reliability of flow detection is improved, and the service life of the flow detection structure, particularly the rotating shaft, is prolonged.

Description

Water pump flow detection structure

Technical Field

The application relates to a water pump flow detects technical field, especially relates to a water pump flow detects structure.

Background

The pump body of canned motor pump and motor link together, and the rotor of motor and the impeller of the pump body are fixed on same root pivot, in order to detect the flow condition of water pump, maintain the even running of water pump, and the water pump can be equipped with flow detection mechanism usually.

For example, chinese patent document, patent No. CN201811416602X, issued on 3/1/2019, discloses a hall flowmeter for use in an outlet pipe, including a main housing, an impeller holder, an impeller, a hall element, and an outlet pipe, wherein the impeller is rotatably disposed in the main housing via the impeller holder, and a magnetic member is disposed on a blade of the impeller; the Hall element is arranged corresponding to the impeller and fixed relative to the main shell, and can sense the magnetic field change of the magnetic part caused by the rotation of the impeller; the outlet pipe is detachably arranged on one side end face of the main shell and is communicated with the outlet on the main shell. The disadvantages are that: the water flow velocity at the water outlet of the water pump is very high, the rotating shaft of the blade in the Hall sensor in the prior art is fixed to the vertical water outlet, so that great velocity loss can be caused, and the impact force on the rotating shaft is too large if the water flow is too fast, so that the Hall sensor is easily damaged.

Disclosure of Invention

Based on above-mentioned not enough among the prior art, the utility model provides a water pump flow detection structure, the impeller axis of rotation that detects is the same with the axis of outlet pipe, and the rivers radial pressure that the impeller place pivot that detects received is little, improves flow detection's reliability, prolongs the life of flow detection structure.

In order to achieve the above object, the present invention adopts the following technical solutions.

A water pump flow detection structure is characterized in that a water pump comprises a rear end cover, a water outlet pipe is arranged in the rear end cover, and a flow detection device is arranged in the water outlet pipe; the flow detection device comprises a guide vane positioned at one end of the water outlet pipe facing the interior of the water pump, a magnetic induction impeller is rotatably arranged at the rear side of the guide vane in the water outlet pipe, and the axis of the magnetic induction impeller is superposed with the axis of the water outlet pipe; the magnetically inductive impeller is equipped with a corresponding hall element.

This application forms the water conservancy diversion through guide vane, realizes the rotation switching-over of rivers for rivers flow out can drive the magnetic induction impeller rotation of rotation axis and outlet pipe axis coincidence, thereby realize the detection of flow, because the axis of magnetic induction impeller and outlet pipe axis coincidence, the rivers radial pressure that the impeller place pivot of detection received is little, can improve the reliability that flow detected, the life of extension flow detection structure.

Preferably, a first shell and a second shell which are adjacently arranged are arranged in the water outlet pipe, the guide vanes are arranged in the first shell in an array mode, and the first shell and the second shell are rotatably connected with a rotating shaft which is provided with a magnetic induction impeller in a matched mode. The installation and arrangement of the guide vanes and the magnetic steel impeller are completed through the first shell and the second shell, so that the integrity of the flow detection structure is better.

Preferably, the guide vanes are obliquely arranged, and five guide vanes are arranged. The flow guiding effect of the flow guiding vanes is ensured.

Preferably, the second shell is internally provided with a plurality of fixed plates, the axis of the second shell is provided with a first positioning cap connected with the fixed plates, the axis of the first shell is provided with a second positioning cap, and the rotating shaft is arranged in the first positioning cap and the second positioning cap. The first positioning cap on the second fixing plate is reliably fixed through the fixing plate, the second positioning cap is supported and positioned through the guide vanes, the rotary connection of the rotating shaft is completed through the first positioning cap and the second positioning cap, and the structural reliability of the magnetic steel corresponding to the impeller is guaranteed.

Preferably, the two ends of the rotating shaft are respectively provided with an adjusting ball inside the first positioning cap and the second positioning cap. Through the setting of adjusting the ball for tip when the axis of rotation rotates and regulation ball form the point contact, and the frictional resistance that the tip received when reducing the axis of rotation and rotating prolongs the life of axis of rotation.

Preferably, one end of the water outlet pipe facing the interior of the water pump is provided with a shaft shoulder matched with the first shell, and the water outlet pipe is internally provided with a limiting clamping ring matched with the outer end of the second shell. The setting of shaft shoulder has realized the location of first casing and has hidden the setting, makes things convenient for rivers from flowing into in the first casing, and the position locking to first casing and second casing is realized to spacing rand cooperation shaft shoulder, and the setting of cooperation axis of rotation, after first casing, axis of rotation and second casing installation target in place, the locking rand just can accomplish the quick installation of water pump detection structure in the outlet pipe, and convenient assembling is quick, and is efficient.

Preferably, the first shell and the second shell are both in a circular ring shape, one end of the first shell facing the second shell is provided with a limiting ring protruding outwards, and one end of the second shell facing the first shell is provided with a limiting groove matched with the limiting ring. Through the cooperation of spacing ring and spacing groove, improve the connection stability between first casing and the second casing.

The invention has the following beneficial effects: the detected rotation axis of the impeller is the same as the axis of the water outlet pipe, the radial pressure of water flow on the rotating shaft where the detected impeller is located is small, the reliability of flow detection is improved, and the service life of the flow detection structure, particularly the rotating shaft, is prolonged.

Drawings

Fig. 1 is a schematic diagram of the structure application of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is an enlarged schematic view at a in fig. 1.

In the figure: a flow detection device 3, a guide vane 4, a first shell 5, a second shell 6, a limiting ring 7, a limiting ring 8, a limiting ring 9, a first positioning cap 10, a ball 11, a second positioning cap 12, a rotating shaft 13, a magnetic induction impeller 14, a blade plate 15, a Hall element 16 and a fixing plate 17 are arranged on a water outlet pipe 2 of a rear end cover 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the products of the present invention are conventionally placed when used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

In the embodiment of the method, the first step,

as shown in figure 1, the water pump flow detection structure comprises a rear end cover 1, a cooling flow channel is arranged in the water pump, a water outlet pipe 2 is arranged in the rear end cover 1, and the water outlet pipe 2 is located at the tail end of the cooling flow channel. The inner hole of the water outlet pipe 2 is cylindrical. A flow detection device 3 is arranged in the water outlet pipe 2; flow detection device 3 is equipped with adjacent first casing 5 and the second casing 6 that sets up including being located outlet pipe 2 towards the inside one end setting of water pump 4, outlet pipe 2 in, the shape of first casing 5 and second casing 6 is the ring shape, and first casing 5 is equipped with the spacing ring 7 of evagination setting towards the one end of second casing 6, and second casing 6 is equipped with the spacing groove 8 of cooperation spacing ring 7 towards the one end of first casing 5. The end of the water outlet pipe 2 facing the interior of the water pump is provided with a shaft shoulder part matched with the first shell 5, and the water outlet pipe 2 is internally provided with a limit retainer ring 9 matched with the outer end of the second shell 6. The guide vane 4 is arranged in the first shell 5, the guide vane 4 and the axis of the first shell 5 are obliquely arranged, and the guide vane 4 is in a curved surface shape. Five guide vanes 4 are provided. Five guide vanes 4 are arranged in an array on the inner circumference of the first shell 5, a second positioning cap 12 is arranged at the axis of the first shell 5, and the second positioning cap 12 is fixedly connected with the five guide vanes 4. A magnetic induction impeller 14 is rotatably arranged at the rear side of the guide vane 4 in the water outlet pipe 2, and the axis of the magnetic induction impeller 14 is superposed with the axis of the water outlet pipe 2; the magnetic induction impeller 14 comprises eight blades 15, magnetic elements are arranged on the blades 15, the eight blades 15 are intersected on the same shaft and arranged in a circumferential array, and the magnetic induction impeller 14 is provided with corresponding Hall elements 16. The hall element 16 is disposed in an insulated and sealed space outside the water outlet pipe 2. The magnetic element and the hall element 16 can cooperate. The first shell 5 and the second shell 6 are rotatably connected with a rotating shaft 13 matched with a magnetic induction impeller 14. Specifically, four fixing plates 17 are arranged in the second shell 6, a first positioning cap 10 connected with the fixing plates 17 is arranged at the axis of the second shell 6, and the rotating shaft 13 is arranged in the first positioning cap 10 and the second positioning cap 12. The two ends of the rotating shaft 13 are respectively provided with adjusting balls 11 inside the first and

second positioning caps

10 and 12. The two ends of the first positioning cap 10, which are opposite to each other, of the second positioning cap 12 are semicircular, and semicircular holes corresponding to the adjusting balls 11 are formed in the first positioning cap 10 and the second positioning cap 12.

The position locking of first casing 5 and second casing 6 is realized to the spacing rand 9 cooperation shaft shoulder of this application, and the setting of cooperation axis of rotation 13 is installed at first casing 5, axis of rotation 13 and second casing 6 back of targetting in place, and the quick installation of water pump detection structure in outlet pipe 2 just can be accomplished to the locking rand, and convenient assembling is quick, efficient. When rivers flow out outlet pipe 2, form the water conservancy diversion through guide vane 4, realize the rotation switching-over of rivers for rivers flow out and can drive the magnetic induction impeller 14 rotation of axis of rotation 13 line and the coincidence of outlet pipe 2 axis, thereby realize the detection of flow, because the axis of magnetic induction impeller 14 and the coincidence of outlet pipe 2 axis, the rivers radial pressure that the impeller place pivot of detection received is little, can improve the reliability of flow detection, the life of extension flow detection structure. Through the setting of adjusting ball 11 for tip when axis of rotation 13 rotates and adjusting ball 11 form the point contact, reduce the frictional resistance that axis of rotation 13 received when rotating, the life of extension axis of rotation 13.

Claims

1. A water pump flow detection structure is characterized in that a water pump comprises a rear end cover, a water outlet pipe is arranged in the rear end cover, and a flow detection device is arranged in the water outlet pipe; the flow detection device comprises a guide vane positioned at one end of the water outlet pipe facing the interior of the water pump, a magnetic induction impeller is rotatably arranged at the rear side of the guide vane in the water outlet pipe, and the axis of the magnetic induction impeller is superposed with the axis of the water outlet pipe; the magnetically inductive impeller is equipped with a corresponding hall element.

2. The structure of claim 1, wherein the outlet pipe has a first housing and a second housing disposed adjacent to each other, the guide vanes are disposed in the first housing, a plurality of guide vanes are disposed in an array on an inner circumference of the first housing, and the first housing and the second housing are rotatably connected to each other by a rotating shaft cooperating with the magnetic induction impeller.

3. The water pump flow detecting structure as claimed in claim 1, wherein the guide vanes are obliquely arranged, and five guide vanes are provided.

4. The structure of claim 2, wherein the second housing has a plurality of fixing plates, the second housing has a first positioning cap at an axis thereof for connecting the fixing plates, the first housing has a second positioning cap at an axis thereof, and the rotating shaft is disposed in the first positioning cap and the second positioning cap.

5. The structure of claim 4, wherein the adjusting balls are respectively disposed at two ends of the rotating shaft inside the first positioning cap and the second positioning cap.

6. The water pump flow detecting structure as claimed in claim 2 or 4, wherein a shaft shoulder portion for engaging with the first housing is provided at an end of the water outlet pipe facing the interior of the water pump, and a limit collar for engaging with an outer end of the second housing is provided in the water outlet pipe.

7. The water pump flow detecting structure as claimed in claim 2 or 4, wherein the first casing and the second casing are both circular rings, a protruding limiting ring is disposed at one end of the first casing facing the second casing, and a limiting groove for fitting the limiting ring is disposed at one end of the second casing facing the first casing.