CN211234579U - Miniature high-pressure elliptic gear flowmeter - Google Patents

Abstract

The utility model relates to a miniature high pressure oval gear flowmeter, including the casing, the inside oval gear subassembly that is provided with of casing, casing top detachable is provided with the upper cover, and the upper cover top is connected with the magnetic sensor. The flow measurement can be well carried out through the mutual cooperation of the elliptic gear assembly, the shell and the magnetic sensor, and the problems of large internal pressure of the shell and the problem of how to accurately acquire the action signal of the elliptic gear by the sensor can be well solved.

Description

Miniature high-pressure elliptic gear flowmeter

Technical Field

The utility model relates to a measuring equipment technical field, more specifically say, relate to a miniature high pressure oval gear flowmeter.

Background

An elliptic gear flowmeter (also called displacement flowmeter, gear flowmeter) belongs to one of positive displacement flowmeters, and is a type of flowmeter with higher precision. It uses a mechanical measuring element to continuously divide the fluid into individual known volume portions, and measures the total volume of the flow volume based on the number of times the metering chamber is successively and repeatedly filled and drained with the volume portions. The elliptic gear flowmeter can be made of different materials (cast iron, cast steel, 304 stainless steel and 316 stainless steel), and is suitable for the flow metering work of industrial departments such as chemical industry, petroleum, medicine, electric power, metallurgy, food and the like.

At present, the current national standard and the industry standard in China only have relevant specifications aiming at the oval gear flowmeter with the nominal pressure of below 1.6Mpa, the national standard related to the high-pressure oval gear flowmeter does not exist, and particularly, the high-pressure oval gear flowmeter for high-viscosity fluid media still belongs to a blank stage.

Domestic chemical industry, petroleum, medicine, electric power, the industrial field such as metallurgy and food is very big to oval gear flowmeter's demand, mainly rely on imported product for a long time, and is with high costs, patent application number 201822127694.1 discloses an oval gear flowmeter, it mainly is to set up excessive section, thereby make its condition that can not appear leaking, in addition, still include the blowdown knob with drain threaded connection, can deposit the solid tiny particle in measurement chamber bottom through the drain discharge, convenient and fast improves measurement accuracy, but its action signal that obtains oval gear when measuring that can't be accurate, thereby can lead to measuring accuracy lower, the inside pressure resistance of oval gear flowmeter is relatively poor, be difficult to satisfy staff's demand, the utility model discloses a new solution is proposed to above problem.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a miniature high pressure oval gear flowmeter to solve the technical problem who mentions in the background art.

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a miniature high pressure oval gear flowmeter, includes the casing, and casing inside is provided with oval gear assembly, and casing top detachable is provided with the upper cover, and the upper cover top is connected with the magnetic sensor.

Preferably, the elliptic gear assembly comprises a first elliptic gear and a second elliptic gear, and the first elliptic gear and the second elliptic gear are meshed and connected with each other and are respectively connected with the shell.

In any of the above aspects, preferably, the first elliptic gear and the second elliptic gear are respectively connected to the housing through an elliptic gear shaft.

In any of the above solutions, preferably, a cylindrical permanent magnet is further connected to the first elliptic gear.

In any of the above schemes, preferably, the housing is provided with a medium inlet and a medium outlet, and the medium inlet and the medium outlet are communicated.

In any of the above aspects, it is preferable that a receiving groove is provided to extend downward from the upper surface of the housing, and the oval gear assembly is mounted in the receiving groove.

In any of the above embodiments, preferably, the medium inlet and the medium outlet are respectively provided in communication with the accommodating groove.

In any of the above aspects, preferably, the upper cover is detachably connected to the housing by a fastener.

In any of the above aspects, preferably, the fastener is a hexagon socket head cap screw.

In any of the above solutions, preferably, the fastening members are provided with at least two fastening members, and are respectively connected with the upper cover symmetrically.

In any of the above aspects, preferably, a sealing gasket is provided at the joint of the upper cover and the housing.

In any of the above solutions, preferably, the upper surface of the housing is further provided with an annular groove, and an O-ring is disposed in the annular groove.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses utilize elliptic gear to cut apart into single known volume part from the medium import to the medium from the medium in succession, discharge from the medium export, measure flow volume total amount according to the number of times that the measuring room is full of and discharges this volume part fluid one by one, repeatedly, the effectual elliptic gear flowmeter of having solved how to endure the action signal problem that bigger internal pressure problem and sensor how accurately obtained elliptic gear, further made things convenient for staff's use.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of a preferred embodiment of the miniature high pressure oval gear flow meter of the present invention;

fig. 2 is a top view of the housing of a preferred embodiment of the miniature high pressure oval gear flow meter of the present invention.

The reference numbers in the figures illustrate:

1. the magnetic sensor comprises a shell, 2, an upper cover, 3, a magnetic sensor, 4, a first elliptic gear, 5, a second elliptic gear, 6, an elliptic gear shaft, 7, a cylindrical permanent magnet, 8, a medium inlet, 9, a medium outlet, 10, an accommodating groove, 11, a fastening piece, 12, a sealing gasket, 13 and an O-shaped sealing ring.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

referring to fig. 1-2, a miniature high-pressure oval gear flowmeter comprises a housing 1, an oval gear assembly is arranged inside the housing 1, an upper cover 2 is detachably arranged at the top end of the housing 1, and a magnetic sensor 3 is connected to the top end of the upper cover 2. The mutual matching of the elliptic gear assembly, the shell 1 and the magnetic sensor 3 can well realize flow measurement, and the problems of large internal pressure of the shell 1 and how to accurately acquire the action signal of the elliptic gear by the sensor can be well solved.

In this embodiment, for better use the oval gear assembly, the oval gear assembly includes first oval gear 4 and second oval gear 5, and first oval gear 4 and second oval gear 5 meshing connection, and connect respectively in casing 1, rotate the flow detection that can be better through the cooperation of first oval gear 4 and second oval gear 5, made things convenient for staff's use, further improved the accuracy.

In the embodiment, in order to better connect the first elliptic gear 4 and the second elliptic gear 5 with the housing 1, the first elliptic gear 4 and the second elliptic gear 5 are respectively connected with the housing 1 through the elliptic gear shaft 6, so that the first elliptic gear 4 and the second elliptic gear 5 can better rotate and are more firmly connected with the housing 1.

In this embodiment, for the first elliptic gear of better use, still be connected with cylindrical permanent magnet 7 on the first elliptic gear 4, can be better detect the flow through cylindrical permanent magnet 7, improved its detection accuracy, it uses the flow detection that carries on that can be better with the cooperation of magnetic sensor 3, has made things convenient for staff's use.

In this embodiment, for better use of the housing, the housing 1 is provided with the medium inlet 8 and the medium outlet 9, the medium inlet 8 and the medium outlet 9 are communicated, and fluid can be better conveyed and discharged through the medium inlet 8 and the medium outlet 9, so that the use of workers is facilitated.

In this embodiment, for better use of the housing 1, the housing 1 is provided with a receiving groove extending downward from the upper surface thereof, the oval gear assembly is installed in the receiving groove 10, the design of the receiving groove 10 can better connect the oval gear assembly with the housing, and the flow volume total amount can be better measured by the number of times the receiving groove 10 (metering chamber) is filled and discharged with the volume portion of the fluid one by one and repeatedly.

In this embodiment, for better use of the medium inlet 8 and the medium outlet 9, the medium inlet 8 and the medium outlet 9 are respectively arranged in communication with the accommodating groove 10, and the fluid can be better transported and discharged by the communication arrangement.

In the embodiment, in order to better connect the upper cover 2 with the housing 1, the upper cover 2 is detachably connected with the housing through the fastening piece 11, so that the disassembly and the assembly are convenient, and the use of workers is further convenient.

In this embodiment, for better use fastener, fastener 11 is hexagon socket head cap screw, can be better through hexagon socket head cap screw with upper cover and casing be connected, has made things convenient for staff's use, has made things convenient for to its dismantlement and installation.

In the embodiment, in order to better connect the upper cover 2 and the housing 1, the fastening members 11 are provided with at least two and are respectively connected with the upper cover 2 symmetrically, and the design of a plurality of fastening members can connect the upper cover 2 and the housing 1 more firmly.

In this embodiment, in order to better use the upper cover 2 and the housing 1, a sealing gasket 12 is disposed at the joint of the upper cover 2 and the housing 1, and the sealing gasket 12 is designed to improve the sealing performance of the joint of the upper cover 2 and the housing 1.

In this embodiment, for better use of the upper cover 2 and the housing 1, the upper surface of the housing 1 is further provided with an annular groove, an O-ring 13 is disposed in the annular groove, and the design of the O-ring 13 further improves the sealing performance between the upper cover 2 and the housing 1.

Example 2:

in use, based on example 1, the media is continuously divided into individual known volume portions from the media inlet 8 by the oval gear, discharged from the media outlet 8, and the total volume flow is measured in terms of the number of times the metering chamber is successively and repeatedly filled and drained with the volume portions. The utility model discloses the innovation point lies in having increased seal gasket 12 between upper cover 2 and the 1 contact surface of casing, thereby seal gasket 12 extrudees the O type sealing washer 13 that is located casing 1's annular groove and forms inside seal. The internal thread hole on the upper cover 2 for installing the magnetic sensor 3 is a through hole. The internal thread hole used for installing the magnetic sensor 3 on the upper cover 2 enables the threaded hole to be the weakest place capable of bearing pressure, the sealing gasket 12 is made of a cold-rolled 304 stainless steel sheet with the thickness of 1-2mm, pressure generated by a medium on the upper cover 2 can be effectively dispersed, the induction area of the magnetic sensor 3 can be closer to the cylindrical permanent magnet 7, and the problems that how the elliptic gear flowmeter can bear larger internal pressure and how the sensor can accurately obtain an action signal of the elliptic gear are effectively solved.

Example 3:

on embodiment 2's basis, when using, the staff can select by oneself to the use quantity of fastener, final purpose with upper cover 2 with casing 1 fastening connection can, in addition, select to the shape of medium import 8 and medium export 9, the utility model discloses do not require, generally can set up to circular or rectangular shape, the utility model discloses utilize oval gear to cut apart into single known volume part from medium import 8 to the medium continuously, discharge from medium export 9, be full of and discharge this volume part fluid's number of times to measure flow volume total amount according to the measuring room one by one, repeatedly, the effectual oval gear flowmeter of having solved how to endure the action signal problem of bigger internal pressure problem and how accurate acquisition oval gear of sensor, further made things convenient for staff's use.

The materials used in the utility model are common standard materials, no special materials and low material cost.

The utility model discloses well magnetic sensor 3 is independent demountable installation mode, and used magnetic sensor 3 is common general type magnetic sensor 3, can change in a flexible way in the use, and economic nature is strong.

The utility model discloses can directly replace imported high pressure oval gear flowmeter under suitable flow range.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (8)

1. A miniature high-pressure elliptical gear flowmeter comprises a shell (1) and is characterized in that an elliptical gear assembly is arranged inside the shell (1), an upper cover (2) is detachably arranged at the top end of the shell (1), and a magnetic sensor (3) is connected to the top end of the upper cover (2); the elliptic gear assembly comprises a first elliptic gear (4) and a second elliptic gear (5), and the first elliptic gear (4) and the second elliptic gear (5) are meshed and connected and are respectively connected with the shell (1); the first elliptic gear (4) is also connected with a cylindrical permanent magnet (7).

2. The miniature high pressure oval gear flow meter of claim 1, wherein: the first elliptic gear (4) and the second elliptic gear (5) are respectively connected with the shell (1) through an elliptic gear shaft (6).

3. The miniature high pressure oval gear flow meter of claim 1, wherein: the shell (1) is provided with a medium inlet (8) and a medium outlet (9), and the medium inlet (8) and the medium outlet (9) are communicated.

4. The miniature high pressure oval gear flow meter of claim 3, wherein: casing (1) upper surface downwardly extending is provided with the holding tank, oval gear assembly installs in holding tank (10).

5. The miniature high pressure oval gear flow meter of claim 4, wherein: the medium inlet (8) and the medium outlet (9) are respectively communicated with the accommodating groove (10).

6. The miniature high pressure oval gear flow meter of claim 1, wherein: the upper cover (2) is detachably connected with the shell through a fastener (11).

7. The miniature high pressure oval gear flow meter of claim 6, wherein: the fastener (11) is an inner hexagon bolt.

8. The miniature high pressure oval gear flow meter of claim 6, wherein: the number of the fasteners (11) is at least two, and the fasteners are respectively connected with the upper cover (2) in a mutually symmetrical mode.

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