CN-224229402-U - Venturi valve with magnetic encoder

Abstract

The venturi valve provided with the magnetic encoder comprises a valve body and an air quantity adjusting mechanism, wherein the air quantity adjusting mechanism is arranged at the top of the valve body and consists of a driver, a sliding block, a sliding seat, a connecting rod and the magnetic encoder, the magnetic encoder consists of a magnetic scale, a reading head and a mounting groove, the magnetic scale is connected with the connecting rod, one end of the connecting rod is connected with a valve rod inside the valve body, and the other end of the connecting rod moves on the sliding seat through the sliding block. The utility model adopts the non-physical contact type magnetic encoder in the Venturi valve air volume adjusting mechanism, avoids the faults caused by abrasion and pollution of the traditional mechanical contact type encoder, prolongs the service life of equipment by adopting a friction-free structure, improves the overall reliability of a system, improves the environment adaptability, has high explosion-proof grade, can be used in the environment with high explosion-proof grade requirement, and has the advantages of simple structure, convenient maintenance, high adjusting precision and long service life.

Inventors

• HU JIANGANG
• ZHANG JIMIN

Assignees

• 欧菲尔(山东)科技有限公司

Dates

Publication Date

20260512

Application Date

20250612

Claims (3)

1. 1. The venturi valve provided with the magnetic encoder comprises a valve body and an air quantity adjusting mechanism, wherein the air quantity adjusting mechanism is arranged at the top of the valve body, and is characterized in that the air quantity adjusting mechanism consists of a driver, a sliding block, a sliding seat, a connecting rod and the magnetic encoder, the magnetic encoder consists of a magnetic scale, a reading head and a mounting groove, the magnetic scale is connected with the connecting rod, one end of the connecting rod is connected with a valve rod inside the valve body, and the other end of the connecting rod moves on the sliding seat through the sliding block.
2. 2. The venturi valve of claim 1, wherein the magnetic encoder's read head is provided with a hall effect sensor or a magneto-resistive sensor.
3. 3. The venturi valve of claim 1, wherein the mounting groove of the magnetic encoder is an aluminum profile groove.

Description

Venturi valve with magnetic encoder Technical Field The utility model relates to a valve, in particular to a venturi valve provided with a magnetic encoder. Background The venturi airflow control valve combines a mechanical pressure independent regulator with a high speed airflow controller to extend airflow control to a maximum level. Through aerodynamic design, the valve has mute working performance, and an automatic pressure balancing device for quick response provides reliable control of air supply pressure. But the venturi valve that is used for the unit air-out to adjust or is used for room wind gap to adjust all needs to adjust the amount of wind, in order to realize adjusting to the amount of wind, the venturi valve adopts traditional mechanical contact formula encoder to detect the valve aperture mostly at present, mechanical contact formula encoder is because with the valve rod contact, wear appears easily in the use to receive environmental dust, dirt or the pollution of oil dirt easily, life is short, environmental suitability is poor, mechanical contact formula encoder detects the precision low moreover, lead to the amount of wind to adjust the precision relatively poor, can't realize fine amount of wind and adjust, mechanical contact formula encoder explosion-proof grade is low in addition, can't be applicable to in the environment that explosion-proof grade such as mine requires highly. Disclosure of utility model The utility model provides a venturi valve provided with a magnetic encoder, which solves the problems of low venturi air quantity adjusting precision, short service life and low explosion-proof level in the prior art. The technical scheme adopted for solving the technical problems is as follows: The utility model provides an install magnetic encoder's venturi valve, includes valve body and air regulation mechanism, and air regulation mechanism sets up at the valve body top, and air regulation mechanism comprises driver, slider, slide, connecting rod and magnetic encoder, and magnetic encoder comprises magnetic scale, read head and mounting groove, and magnetic scale links to each other with the connecting rod, and connecting rod one end links to each other with the inside valve rod of valve body, and the connecting rod other end passes through the slider and moves on the slide. The read head of the magnetic encoder is provided with a hall effect sensor or a magneto-resistive sensor. The mounting groove of the magnetic encoder adopts an aluminum profile groove body, and the aluminum material can not influence the transmission of magnetic field transformation. When the venturi valve regulates the air quantity, an operator drives the sliding block to move along the sliding seat through the driver, the sliding block pulls the valve rod to move through the connecting rod, when the magnetic scale connected with the connecting rod rotates or moves in the process that the connecting rod pulls the valve rod to move, the Hall effect sensor or the magnetic resistance sensor in the reading head can detect the change of the magnetic field and convert the magnetic field into electric signals, the electric signals are amplified, filtered, decoded and the like and then are output to an external control system, so that the accurate detection of the position change of the valve rod is realized, and the control system regulates the air quantity according to the detection data of the magnetic encoder. The utility model adopts the non-physical contact type magnetic encoder in the Venturi valve air volume adjusting mechanism, avoids the faults caused by abrasion and pollution of the traditional mechanical contact type encoder, prolongs the service life of equipment by adopting a friction-free structure, improves the overall reliability of a system, improves the environment adaptability, has high explosion-proof grade, can be used in the environment with high explosion-proof grade requirement, and has the advantages of simple structure, convenient maintenance, high adjusting precision and long service life. Drawings The utility model will be further described with reference to the drawings and examples. FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is a schematic front view of the present utility model; FIG. 3 is a schematic top view of the present utility model; fig. 4 is a schematic installation view of the magnetic encoder of the present utility model. In the figure, a valve body 1, a driver 2, a sliding block 3, a sliding seat 4, a connecting rod 5, a magnetic encoder 6, a valve rod 7, a magnetic scale 61, a reading head 62 and a mounting groove 63 are arranged. Detailed Description As shown in fig. 1, 2, 3 and 4, a venturi valve provided with a magnetic encoder comprises a valve body 1 and an air volume adjusting mechanism, wherein the air volume adjusting mechanism is arranged at the top of the valve body 1 and consists of a driver 2, a sliding block 3, a slidi