CN203163782U

CN203163782U - Flow meter

Info

Publication number: CN203163782U
Application number: CN 201320184941
Authority: CN
Inventors: 曹福祝
Original assignee: CHENGDE BENT STAR INSTRUMENT Co Ltd
Current assignee: CHENGDE BENT STAR INSTRUMENT Co Ltd
Priority date: 2013-04-15
Filing date: 2013-04-15
Publication date: 2013-08-28
Anticipated expiration: 2023-04-15

Abstract

The utility model provides a flow meter comprising a meter shell and a movement. The movement consists of an impeller box, an impeller assembly and a base. A cavity used for mounting an impeller is arranged at the bottom of the impeller box. An upper tip butting against an upper bearing of the impeller is arranged in the middle of the upper side of the impeller box. A plurality of chamfered water inlets and a transverse water outlet are arranged on the edge of the cavity. The impeller assembly comprises the impeller, an impeller bush, a groove-shaped bearing and the like. A tip matching with the groove-shaped bearing on the impeller assembly is arranged in the middle of the base. One weight sensor is arranged on each water inlet. The flow meter is simple in structure, small in size, long in service life and accurate in measurement.

Description

Flowmeter

Technical field:

The utility model relates to metering field, and particularly a kind of flow instrument relates in particular to a kind of flowmeter.

Background technology:

Flow instrument is widely used in national economy every field such as metallurgy, electric power, coal, chemical industry, oil, traffic, food, medicine, environmental protection agent people daily life, roughly there are two kinds, a kind of is multithread speed water meter, this water meter comprises watchcase, movement two parts, have characteristics such as flow performance is good, but because water delivering orifice and water inlet cause the volume of impeller box bigger not agreeing a plane; Another kind is single current speed water meter, this water meter does not have impeller box, impeller is directly installed on the watchcase, this water meter water delivering orifice and water inlet are in same plane, but because the water inlet design is unreasonable, the impulsive force that produces when making the water slug impeller that flows to from water inlet is inhomogeneous, the lining on the impeller is worn and torn easily, and influence its serviceable life.It is also very unstable sometimes to enter flowmeter simultaneously.

Flowmeter develops into and reaches its maturity today, and mechanism's complexity, bulky is easy to generate noise or vibration in the use, greatly reduce the serviceable life of flowmeter, and measuring accuracy is also not accurate enough.

Summary of the invention:

The utility model provides a kind of simple in structure in order to solve the technical matters that above-mentioned prior art exists, and flow performance is good, volume is little, the flowmeter of long service life.

For achieving the above object, the technical solution of the utility model is:

A kind of flowmeter, comprise watchcase and movement, described movement is made up of impeller box, impeller assembly and pedestal, impeller assembly is installed in the cavity of impeller box the inside, impeller box and pedestal link together by web member, the edge of the cavity below the described impeller box is provided with inclined cutout water inlet and horizontal water delivering orifice, and water inlet is evenly distributed on the edge of cavity, and described water inlet is provided with LOAD CELLS.

The number of described water inlet is even number, and is symmetry with the current direction center line that goes out of water delivering orifice.The top of impeller box is top on being provided with one, and described impeller assembly comprises impeller and impeller buss, and described impeller buss is located at the groove surfaces at impeller assembly middle part.Be provided with a head bearing above the impeller assembly, be provided with a lower bearing below, top under being provided with one above the described pedestal, described impeller assembly is installed in the cavity of impeller box the inside, head bearing above it is by last top the withstanding at impeller box top, lower bearing below it is then by following top the withstanding on the pedestal, and is affixed by screw between impeller box and the pedestal.

Rationally distributed on water inlet on the utility model impeller box and the water delivering orifice structure, the impulsive force that impeller is subjected to is even, has reduced the wearing and tearing of lining, and the advantage that combines former multithread speed, single current speed water meter has simple in structure.Volume is small and exquisite, long service life, measurement characteristic of accurate.

Description of drawings:

Fig. 1: cassette mechanism structure synoptic diagram of the present utility model;

Fig. 2: impeller box structural representation;

Fig. 3: impeller box upward view;

Fig. 4: base construction synoptic diagram.

Wherein: 1, impeller box; 2, impeller; 3, pedestal; 4, water inlet; 5, water delivering orifice; 6, upward top; 7, impeller buss; 8, lower bearing; 9, top down; 10, cavity; 11, screw; 12, head bearing; 13, LOAD CELLS;

Embodiment:

Shown in Fig. 1 to 4: a kind of flowmeter, comprise watchcase and movement, described movement is by impeller box 1, impeller assembly and pedestal 3 are formed, impeller assembly is installed in the cavity 10 of impeller box 1 the inside, impeller box 1 and pedestal 3 link together by web member, the edge of the cavity 10 below the described impeller box 1 is provided with inclined cutout water inlet 4 and horizontal water delivering orifice 5, water inlet 4 is evenly distributed on the edge of cavity 10, described water inlet 4 is provided with LOAD CELLS 13, weight sensor 13 accurate recording weight change, thus get rid of because of factors such as impurity or gas in temperature variation and the pipeline to the influence of true metering.

The number of described water inlet 4 is even number, and is symmetry with the current direction center line that goes out of water delivering orifice 5.The top of impeller box 1 is provided with one and goes up toply 6, and described impeller assembly comprises impeller 2 and impeller buss 7, and described impeller buss 7 is located at the groove surfaces at impeller assembly middle part.Be provided with a head bearing 12 above the impeller assembly, be provided with a lower bearing 8 below, be provided with one following top 9 above the described pedestal 3, described impeller assembly is installed in the cavity 10 of impeller box 1 the inside, head bearing 12 above it is withstood by last top 6 of impeller box top, 8 of lower bearings below it are withstood by following top 9 on the pedestal, and are affixed by screw 11 between impeller box and the pedestal.

The water inlet 4 of described flowmeter is together with runner is arranged, runner is provided with variable valve (among the figure for illustrating), runner between variable valve and the flowmeter water inlet 4 is provided with throttle orifice (among the figure for illustrating), adjusting variable valve is after flow reaches certain value, during fluid origin pressure all changes, owing to just enter the other runner near normal pressure that stays passage to form after the throttling damping step-down of variable valve, make the pressure of runner change minimum, it is minimum to flow into the fluctuations in discharge of flowmeter through throttle orifice again, and the flow that has guaranteed to enter flowmeter is very stable.

The above, be not that the utility model is done any formal and substantial restriction, all technician who is familiar with the industry, in not breaking away from the technical solutions of the utility model scope, when utilizing the above technology contents that discloses, and the equivalent variations of a little change of making, modification and differentiation is equivalent embodiment of the present utility model.

Claims

1. flowmeter, comprise watchcase and movement, it is characterized in that: described movement is made up of impeller box (1), impeller assembly and pedestal (3), and impeller assembly is installed in the cavity (10) of impeller box (1) the inside, and impeller box (1) links together by screw (11) with pedestal (3); Described impeller assembly comprises: impeller (2) and impeller buss (7); The edge of the cavity (10) below the described impeller box (1) is provided with inclined cutout water inlet (4) and horizontal water delivering orifice (5), and water inlet (4) is evenly distributed on the edge of cavity (10); The top of described impeller box (1) is provided with one and goes up top (6); Be provided with one top (9) down above the described pedestal (3), described water inlet (4) is provided with LOAD CELLS (13).

2. a kind of flowmeter according to claim 1, it is characterized in that: the number of described water inlet (4) is even number, and is symmetry with the current direction center line that goes out of water delivering orifice (5).

3. a kind of flowmeter according to claim 1 is characterized in that: described impeller buss (7) is located at the groove surfaces at impeller assembly middle part; Be provided with a head bearing (12) above the impeller assembly, be provided with a lower bearing (8) below.

4. a kind of flowmeter according to claim 1, it is characterized in that: described impeller assembly is installed in the cavity (10) of impeller box (1) the inside, head bearing above it (12) is withstood by last top (6) at impeller box top, and the lower bearing below it (8) is then withstood by following top (9) on the pedestal.