CN212620895U - Impeller, detection component and flowmeter - Google Patents

Abstract

The utility model discloses an impeller, determine module and flowmeter, include: a rotating shaft, both ends of which are formed with mounting parts; the mounting cylinder is sleeved on the rotating shaft, and the outer surface of the mounting cylinder is provided with a water guide conical surface and a cylindrical surface connected with the water guide conical surface; the blades are plastic magnets and are integrally formed on the cylindrical surface. The utility model discloses an impeller, determine module and flowmeter can reduce the rotation resistance, improves measurement accuracy, prolongs the life of product by a wide margin.

Description

Impeller, detection component and flowmeter

Technical Field

The utility model relates to a fluidic device, in particular to impeller, determine module and flowmeter.

Background

The flowmeter is a device for measuring fluid flow parameters, and mainly obtains flow parameters.

The impeller is a core part of the flowmeter and is conventional and provided with a rotating shaft, a sleeve sleeved on the rotating shaft and blades positioned on the outer surface of the sleeve.

The rotating shaft is composed of two sections of half shafts, and a permanent magnet is arranged between the two sections of half shafts.

When the flowmeter is used, fluid flows through the impeller, the fluid exerts force on the blades, the impeller rotates, meanwhile, the permanent magnet rotates, correspondingly, a magnetic field formed by the permanent magnet also rotates, and the flowmeter converts the detected magnetic field to obtain data such as flow speed and flow.

However, the impeller structure of the existing flowmeter has poor flow detection accuracy due to large rotation resistance, and the magnet of the signal generating source is made of aluminum-iron-boron or ferrite and other pure powder metallurgy materials, so that the requirements of breakage prevention, corrosion prevention and the like of the materials are difficult to ensure, and the detection accuracy is easy to decline or fail.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an impeller, determine module and flowmeter, can reduce the rotation resistance, improve measurement accuracy.

The utility model discloses a realize through following technical scheme:

the utility model discloses a first aspect provides an impeller, include: a rotating shaft, both ends of which are formed with mounting parts; the mounting cylinder is sleeved on the rotating shaft, and the outer surface of the mounting cylinder is provided with a water guide conical surface and a cylindrical surface connected with the water guide conical surface; the blades are plastic magnets and are integrally formed on the cylindrical surface.

An impeller according to the first aspect of the invention, the mounting portion is a cone.

According to the utility model discloses an impeller of first aspect, the pivot has concentric first axial region, second axial region, connects the first axial region with the flat portion of second axial region, flat portion is located the installation section of thick bamboo is inboard.

According to the utility model discloses an impeller of first aspect, the blade is close to the one end of the water guide conical surface is provided with convex chamfer.

According to the present invention, the thickness of the blade gradually increases from the root to the outside.

An impeller according to the first aspect of the invention, the extended path of the blades is a k-milo helix.

A second aspect of the present invention provides a detecting assembly, including any one of the above-mentioned impellers.

According to the utility model discloses the second aspect a detection subassembly, still include the first body and the second body of tip suit, first body with the inboard of second body is provided with a plurality of location the floor of pivot tip, connect a plurality ofly the mandrel of floor.

According to the utility model discloses second aspect a detection subassembly, still include the holding the bearing of installation department, the bearing surface is provided with the annular, the floor is provided with the butt the convex part of annular.

A third aspect of the present invention is to provide a flowmeter, which includes the above-mentioned detecting assembly.

Has the advantages that: compared with the prior art, the utility model discloses an impeller, determine module and flowmeter are through setting up plastic magnetism material integrated into one piece's blade and installation section of thick bamboo, thereby, original permanent magnet that adopts pure powder metallurgy to make has been replaced, the toughness and the corrosion resistance of impeller have been improved by a wide margin, and the whole magnetic field of impeller is even, weight balance, the steadiness of impeller operation has both been improved, the weight of impeller body has been alleviateed again, and then, reduce the rotational resistance of impeller, improve the uniformity of signal, ensure that flow detection is accurate, improve and detect the precision, the life of flowmeter product is prolonged by a wide margin.

In addition, the guide conical surface is arranged, so that the flowing direction is changed, the flowing direction of the fluid is enabled to be outwards biased along the radial direction of the rotating shaft, the included angle between the flowing direction of the fluid and the surface of the blade is reduced, the flowing obstruction is reduced, and the detection accuracy is further improved.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural view of a flow meter according to the present invention;

FIG. 2 is a schematic diagram of the detection assembly of FIG. 1;

fig. 3 is a schematic structural view of the rotating shaft in fig. 2.

Reference numerals: 100-rotating shaft, 110-mounting part, 120-mounting barrel, 130-guiding conical surface, 140-cylindrical surface, 150-blade, 160-first shaft part, 170-second shaft part, 180-flat part, 190-fillet, 200-first tube, 210-second tube, 220-rib plate, 230-mandrel, 240-bearing, 250-ring groove and 260-convex part.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the present embodiment is directed to providing a specific aspect of a flow meter.

Specifically, the flowmeter comprises a shell, a water inlet joint connected with the shell, a water outlet joint connected with the shell, and a detection assembly positioned in the shell.

The water inlet joint and the water outlet joint can be integrally manufactured with the shell, and can also be independent parts.

The detection assembly can be arranged in the shell in an interference mode, and can also be arranged in other easily understood installation modes.

The mounting mode of the detection assembly can be disassembled and assembled, and cleaning and maintenance are convenient.

For the detection assembly, the detection assembly has first body 200 and second body 210 of tip suit, and first body 200 and second body 210 can set up outer shoulder and interior shoulder to, outer shoulder and interior shoulder are coaxial disc, thereby, the coaxial equipment of first body 200 and second body 210 reduces installation error.

In order to ensure firm connection, the fixing can be assisted by bonding, clamping, inserting and the like.

The detection assembly can also be used as an independent assembly, is suitable for flowmeters with different diameters, and has good universality.

The inner sides of the first tube 200 and the second tube 210 are further provided with a plurality of ribs 220, the ribs 220 are connected with the mandrel 230, and the ribs 220 and the mandrel 230 are matched to position the impeller.

In some preferred embodiments, the width of the rib 220 is greater than the length of the mandrel 230, such that the rib 220 is provided with a protrusion on a side thereof adjacent to the mandrel 230, such that the impeller has a circumferential groove 250, and the protrusion cooperates with the circumferential groove 250 to position the impeller.

Meanwhile, the ribs 220 are provided with protrusions, so that the diameter of the mandrel 230 can be reduced, and the flow obstruction can be reduced.

In some preferred embodiments, a bearing 240 may be provided such that the bearing 240 has a circumferential groove 250, thereby reducing wear of the impeller.

Referring to fig. 2 and 3, in particular, the impeller includes a rotating shaft 100, a mounting cylinder 120 fitted around the rotating shaft 100, and a vane 150 located on a radially outer surface of the mounting cylinder 120.

The number of the blades 150 in the present embodiment is four, but may be increased or decreased as necessary.

The rotating shaft 100 has a first shaft 160, a second shaft 170, and a flat 180 connecting the first shaft 160 and the second shaft 170, wherein the flat 180 is located inside the mounting cylinder 120.

Since the flat portion 180 is not circular, the flat portion 180 is geometrically firmly fixed to the mounting cylinder 120.

Meanwhile, the ends of the first shaft portion 160 and the second shaft portion 170 are further provided with a mounting portion 110, and the mounting portion 110 is positioned in cooperation with the bearing 240.

In some preferred embodiments, mount 110 may be tapered such that mount 110 is positioned in coaxial fit with bearing 240, improving assembly accuracy.

The tip of the mounting part 110 may be provided in a shape of a sphere, a bead, or the like, thereby performing positioning using the tip of the mounting part 110 and, at the same time, improving durability of the tip of the mounting part 110.

In some preferred embodiments, the conical tip of the mounting portion 110 may be beaded to reduce friction with respect to movement of the mating surfaces of the bearing 240 and improve smooth operation of the impeller.

In some preferred embodiments, the contact surface between the mounting portion 110 and the bearing 240 may be a conical ring, which reduces the contact area and the rotation resistance.

Wherein, blade 150 is the plastic magnetism, magnetizes after injection moulding, and the powder metallurgy evenly distributed of being convenient for has both guaranteed like this that blade 150 weight is balanced, whole impeller magnetic field intensity is even unanimous simultaneously, has increased substantially flowmeter measuring precision, satisfies flowmeter function needs.

Of course, the blades and the mounting barrel can be directly injection-molded on the rotating shaft 100, so that the mounting is simplified.

Structurally, the outer surface of the mounting cylinder 120 has a water guiding conical surface and a cylindrical surface 140 connected to the water guiding conical surface.

The outer diameter of the abutting portion of the guiding conical surface 130 and the rotating shaft 100 is equal, so that the fluid flowing along the rotating shaft 100 does not touch the step, the flow obstruction is reduced, and the fluid is conveniently guided to the vane 150.

For the vane 150, the vane 150 is integrally formed on the cylindrical surface 140, thereby reducing the number of parts and reducing the manufacturing cost.

In some preferred embodiments, one end of the vane 150 near the water guiding cone surface may be provided with a circular arc chamfer 190.

Accordingly, the cutting of the vane 150 to the fluid is reduced, the fluid resistance is reduced, and the vibration noise is reduced.

In some preferred embodiments, the thickness of the blade 150 may be increased from the root to the tip.

Thus, the strength of the blade 150 is improved, and deformation in a high-speed fluid is reduced.

In some preferred embodiments, the extended path of the blade 150 may be a k-milo spiral.

Therefore, the obstruction of the fluid flow by the vanes 150 is further reduced, and the measurement accuracy of the flowmeter is improved.

Of course, the circulation in this embodiment is not limited to water flow, but may be air flow.

Thus, the present embodiment has the following effects:

1. through setting up the blade 150 and the installation section of thick bamboo 120 of plastic magnetism material to, save original pure powder metallurgy's permanent magnet, increased substantially the toughness and the corrosion resistance of impeller, and the whole magnetic field of impeller is even, weight balance, both improved the smoothness of impeller operation, alleviateed the weight of impeller body again, and then, reduce the rotating resistance of impeller, improve the uniformity of signal, ensure that flow detection is accurate, improve and detect the precision, prolong the life of product by a wide margin.

2. The guide conical surface 130 is further provided, so that the flow direction is changed, the flow direction of the fluid is biased outwards along the radial direction of the rotating shaft 100, the included angle between the flow direction of the fluid and the surface of the blade 150 is reduced, the flow obstruction is reduced, and the detection accuracy is further improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above 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 (10)

1. An impeller, comprising:

a rotating shaft (100) having mounting parts (110) formed at both ends thereof;

the mounting cylinder (120) is sleeved on the rotating shaft (100), and the outer surface of the mounting cylinder is provided with a water guide conical surface and a cylindrical surface (140) connected with the water guide conical surface;

the blades (150) are plastic magnets and are integrally formed on the cylindrical surface (140).

2. An impeller according to claim 1, characterized in that the mounting portion (110) is conical.

3. An impeller according to claim 1, wherein the shaft (100) has a first shaft part (160), a second shaft part (170) and a flat part (180) connecting the first shaft part (160) and the second shaft part (170) concentrically, the flat part (180) being located inside the mounting cylinder (120).

4. An impeller according to claim 1, characterized in that the end of the blade (150) close to the water guiding cone is provided with an arc-shaped chamfer (190).

5. An impeller according to claim 1, characterized in that the thickness of the blades (150) increases gradually from the root outwards.

6. An impeller according to claim 1, characterized in that the extension of the blades (150) is a k-milo spiral.

7. A test assembly comprising an impeller according to any one of claims 1 to 6.

8. A detection assembly according to claim 7, further comprising a first tube (200) and a second tube (210) sleeved at the ends, wherein a plurality of ribs (220) for positioning the ends of the rotating shaft (100) and a mandrel (230) for connecting the plurality of ribs (220) are arranged on the inner sides of the first tube (200) and the second tube (210).

9. A detection assembly according to claim 8, further comprising a bearing (240) receiving the mounting portion (110), wherein an annular groove (250) is provided on an outer surface of the bearing (240), and wherein the rib (220) is provided with a protrusion (260) abutting against the annular groove (250).

10. A flowmeter comprising a sensing assembly according to any one of claims 7 to 9.

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