CN209524965U - Whether there is or not Magnetic testis close to the gas roots flowmeter of switch for a kind of band - Google Patents

Abstract

The utility model relates to gas roots flowmeter, whether there is or not the gas roots flowmeters of the close switch of Magnetic testi for specifically a kind of band.Including shell, inductance approach switch, it is characterized in that: the inside of the shell is embedded with rotor assembly, the front and rear sides of shell are respectively equipped with drive end bearing bracket and rear end cap, synchromesh gear is equipped in shell between rear end cap and rotor assembly, it is equipped at the center of the synchromesh gear and gets rid of oil sheet, inductance approach switch is embedded on the rear end cap got rid of on rear side of oil sheet, the inductance approach switch is for detecting the revolving speed for getting rid of oil sheet；Machine core gear assembly is equipped in shell between rear end cap and rotor assembly.Compared with the existing technology, oil sheet is got rid of using on flowmeter original structure, increase by one without Magnetic testi inductance approach switch, it can detecte the revolving speed for getting rid of oil sheet, high-frequency impulse as flowmeter error-detecting, the pulse signal that output detection needs, can greatly shorten the time of error-detecting, improve production efficiency.

Description

A gas waist wheel flowmeter with non-magnetic detection proximity switch

technical field

The utility model relates to a gas waist wheel flow meter, in particular to a gas waist wheel flow meter with a non-magnetic detection proximity switch.

Background technique

The gas waist wheel flowmeter is a volumetric flow meter that accurately measures gas flow. It has the characteristics of high precision, good reliability, light weight, long life, and low operating noise. It is suitable for measuring natural gas, city gas, propane, nitrogen, etc. , industrial inert gas and other non-corrosive gases, widely used in gas commercial settlement in catering, hotel and other industries, gas metering in transmission and distribution pipeline network, gas pressure regulating station metering, gas metering in industrial and civil boilers, etc.

The working principle of the gas waist wheel flowmeter is as follows: when the gas passes through the flow meter, a pressure difference is generated at the inlet end and the gas outlet end, which acts on the double waist wheel connected with the high-precision synchronous gear, thereby driving the double waist wheel to rotate, During this period, a closed space is formed between the double waist wheel, the inner wall of the flowmeter housing and the gland, for periodic inflation and exhaust. The rotation of the magnetic coupling is transmitted to the mechanical counter, so as to accumulate the volume flowing through the metering chamber to achieve the purpose of metering.

In the production process of the mechanical gas waist wheel flowmeter, it is necessary to detect the indication error. The detection type needs to collect the pulse of the flowmeter. Since the pulse frequency of the mechanical gas waist wheel flowmeter is low, especially when the flow rate is small, the test The time will be very long, and some flowmeters need more than 3 hours to complete the test, and the production efficiency is greatly reduced.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model designs a gas waist wheel flowmeter with a non-magnetic detection proximity switch, which uses a non-magnetic detection inductive proximity switch to detect the rotational speed of the oil flinger, thereby greatly reducing the error Detection time, improve production efficiency.

In order to achieve the above purpose, a gas waist wheel flowmeter with a non-magnetic detection proximity switch is designed, including a housing and an inductive proximity switch. It is characterized in that: a rotor assembly is embedded inside the housing, and the housing The front and rear sides are respectively provided with a front end cover and a rear end cover, and a synchronous gear is arranged in the housing between the rear end cover and the rotor assembly, and an oil flinger is arranged at the center of the synchronous gear, and the rear side of the oil flinger An inductive proximity switch is embedded on the rear end cover of the motor, and the inductive proximity switch is used to detect the rotation speed of the oil flinger; a movement gear assembly is arranged in the housing between the rear end cover and the rotor assembly, and the movement gear The front side of the assembly passes through the front end cover and is connected to the magnetic coupling assembly, and the magnetic coupling assembly is provided with a counter assembly.

The front and rear sides of the rotor assembly are respectively provided with a front side plate and a rear side plate, and the front side plate and the rear side plate are arranged inside the casing.

The synchronous gear is arranged in the housing between the rear end cover and the rear side plate.

The movement gear assembly is arranged in the housing between the front end cover and the front side plate.

Compared with the prior art, the utility model has the advantages of simple structure and convenient transformation. The utility model utilizes the oil flinger on the original structure of the flowmeter and adds a non-magnetic detection inductive proximity switch, which can detect the rotational speed of the oil flinger and serve as a flow meter. The high-frequency pulse of error detection outputs the pulse signal required for detection, which can greatly shorten the time of error detection and improve production efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

See Figure 1, where 1 is the inductive proximity switch, 2 is the rear end cover, 3 is the oil flinger, 4 is the synchronous gear, 5 is the rear side plate, 6 is the shell, 7 is the rotor assembly, 8 is the front side Plate, 9 is the movement gear assembly, 10 is the front cover, 11 is the magnetic coupling assembly, and 12 is the counter assembly.

Detailed ways

The utility model will be further described below according to the accompanying drawings.

As shown in FIG. 1 , a rotor assembly 7 is embedded inside the housing 6 , and a front end cover 10 and a rear end cover 2 are respectively provided on the front and rear sides of the housing 6 , and are located between the rear end cover 2 and the rotor assembly 7 The housing 6 is provided with a synchronous gear 4, the center of the synchronous gear 4 is provided with an oil thrower 3, and the rear end cover 2 on the rear side of the oil thrower 3 is embedded with an inductive proximity switch 1. The inductive proximity switch 1 is used to detect the rotating speed of the oil flinger 3; the movement gear assembly 9 is arranged in the casing 6 between the rear end cover 2 and the rotor assembly 7, and the front side of the movement gear assembly 9 passes through The front cover 10 is also connected with a magnetic coupling assembly 11 , and the magnetic coupling assembly 11 is provided with a counter assembly 12 .

The front and rear sides of the rotor assembly 7 are respectively provided with a front side plate 8 and a rear side plate 5 , and the front side plate 8 and the rear side plate 5 are arranged inside the casing 6 .

The synchronous gear 4 is arranged in the housing 6 between the rear end cover 2 and the rear side plate 5 .

The movement gear assembly 9 is arranged in the housing 6 between the front cover 10 and the front side plate 8 .

When the utility model is used, a non-magnetic detection inductive proximity switch is added to the oil flinger in the existing structure, which can detect the rotational speed of the oil flinger, and use it as a high-frequency pulse for flowmeter error detection to output pulses required for detection Signal can greatly shorten the time of error detection and improve production efficiency.

Claims (4)

1. whether there is or not the gas roots flowmeter of the close switch of Magnetic testi, including shell, inductance approach switch, features for a kind of band Be: the inside of the shell (6) is embedded with rotor assembly (7), the front and rear sides of shell (6) be respectively equipped with drive end bearing bracket (10) and after End cap (2), the shell (6) between rear end cap (2) and rotor assembly (7) are interior equipped with synchromesh gear (4), the synchromesh gear (4) it is equipped with and gets rid of oil sheet (3) at center, be embedded with inductance approach switch on the rear end cap (2) got rid of on rear side of oil sheet (3) (1), the inductance approach switch (1) is for detecting the revolving speed for getting rid of oil sheet (3)；Positioned at rear end cap (2) and rotor assembly (7) it Between shell (6) in be equipped with machine core gear assembly (9), the front side of machine core gear assembly (9) passes through drive end bearing bracket (10) and connects magnetic Coupling assembly (11), the magnetic coupling component (11) are equipped with counter assembly (12).

2. whether there is or not Magnetic testis for a kind of band according to claim 1 close to the gas roots flowmeter of switch, it is characterized in that: institute The front and rear sides for stating rotor assembly (7) are respectively equipped with front side board (8) and back side panel (5), the front side board (8) and back side panel (5) It is internal to be located at shell (6).

3. whether there is or not Magnetic testis for a kind of band according to claim 1 close to the gas roots flowmeter of switch, it is characterized in that: institute It states in the shell (6) that synchromesh gear (4) is located between rear end cap (2) and back side panel (5).

4. whether there is or not Magnetic testis for a kind of band according to claim 1 close to the gas roots flowmeter of switch, it is characterized in that: institute It states in the shell (6) that machine core gear assembly (9) is located between drive end bearing bracket (10) and front side board (8).