阅读说明：本技术 一种自动调压装置 (Automatic pressure regulating device ) 是由 李昌龙 唐小芳 袁波 于 2020-06-02 设计创作，主要内容包括：一种自动调压装置,包括调压阀、旋转机构和电机,旋转机构包括安装座、可转动地设置在安装座上的旋转轴套和套设在旋转轴套内的上下运动转换轴,旋转轴套的内壁和上下运动转换轴的外壁均沿轴向开设有多条呈半圆柱状的导向槽,且旋转轴套上的导向槽与上下运动转换轴上的导向槽一一对应并围合成柱状的导腔,导腔内配设有多个轴承钢珠；调压阀的阀杆与上下运动转换轴的一端连接,且阀杆与上下运动转换轴位于同一轴线上；电机与旋转轴套传动连接。本发明通过调压阀输出的压力与电机做闭环控制,根据设定压力,实现自动调压,提高了压力调节精度。(An automatic pressure regulating device comprises a pressure regulating valve, a rotating mechanism and a motor, wherein the rotating mechanism comprises a mounting seat, a rotating shaft sleeve and an up-and-down movement conversion shaft, the rotating shaft sleeve is rotatably arranged on the mounting seat, the up-and-down movement conversion shaft is sleeved in the rotating shaft sleeve, a plurality of semi-cylindrical guide grooves are axially formed in the inner wall of the rotating shaft sleeve and the outer wall of the up-and-down movement conversion shaft, the guide grooves on the rotating shaft sleeve and the guide grooves on the up-and-down movement conversion shaft are in one-to-one correspondence and enclose into a cylindrical guide cavity; a valve rod of the pressure regulating valve is connected with one end of the up-and-down motion conversion shaft, and the valve rod and the up-and-down motion conversion shaft are positioned on the same axis; the motor is in transmission connection with the rotating shaft sleeve. According to the invention, the pressure output by the pressure regulating valve and the motor are subjected to closed-loop control, automatic pressure regulation is realized according to the set pressure, and the pressure regulation precision is improved.)

1. The utility model provides an automatic pressure regulating device which characterized in that, includes air-vent valve, rotary mechanism and motor, wherein:

the rotating mechanism comprises an installation seat, a rotating shaft sleeve which is rotatably arranged on the installation seat and an up-and-down motion conversion shaft which is sleeved in the rotating shaft sleeve, wherein a plurality of semi-cylindrical guide grooves are axially formed in the inner wall of the rotating shaft sleeve and the outer wall of the up-and-down motion conversion shaft, the guide grooves in the rotating shaft sleeve and the guide grooves in the up-and-down motion conversion shaft are in one-to-one correspondence and form a cylindrical guide cavity, and a plurality of bearing steel balls are arranged in the guide cavity;

the pressure regulating valve is provided with a valve rod with a thread pair structure, the valve rod is connected with one end of the up-and-down motion converting shaft, and the valve rod and the up-and-down motion converting shaft are positioned on the same axis; the motor is in transmission connection with the rotating shaft sleeve, so that the motor drives the rotating shaft sleeve to rotate on the mounting seat, the rotating shaft sleeve drives the up-and-down motion conversion shaft to rotate through the bearing steel balls, the up-and-down motion conversion shaft drives the valve rod of the pressure regulating valve to rotate, and meanwhile, the valve rod of the pressure regulating valve drives the up-and-down motion conversion shaft to move freely in the rotating shaft sleeve along the axial direction.

2. The automatic pressure regulating device of claim 1, wherein the mounting base comprises an upper plate and a lower plate which are arranged in parallel up and down, and two bearings which are respectively embedded in the upper plate and the lower plate along the same axis, and the upper end and the lower end of the rotary shaft sleeve are respectively sleeved in the inner rings of the two bearings.

3. The automatic pressure regulating device of claim 2, wherein the rear side of the lower plate is provided with a connecting plate with the lower plate vertical, and the upper plate is connected to the connecting plate through bolts so that the mounting seat is in a U-shaped structure.

4. The automatic pressure regulating device of claim 3, wherein a driven wheel is tightly fitted on the rotating shaft sleeve between the upper plate and the lower plate, a switching shaft is connected to an end of an output shaft of the motor, a driving wheel is arranged on the switching shaft, and the driven wheel is connected with the driving wheel through a synchronous belt transmission so that the motor drives the driving wheel to rotate, thereby driving the synchronous belt to rotate, and further driving the driven wheel and the rotating shaft sleeve to rotate.

5. The automatic pressure adjustment apparatus of claim 1, wherein the motor is a stepper motor.

6. The automatic pressure regulating device according to any one of claims 1 to 5, further comprising a fixing plate, wherein the rotating mechanism is fixedly mounted on the fixing plate through a mounting seat, the motor is fixedly mounted on the fixing plate through a motor bracket on the side surface of the rotating mechanism, the pressure regulating valve is fixedly mounted below the rotating mechanism through a pressure regulating valve bracket, and a valve rod of the pressure regulating valve is axially consistent with an up-and-down movement converting shaft of the rotating mechanism.

7. The automatic pressure regulating device according to any one of claims 1 to 5, further comprising a limit switch disposed above the rotating mechanism, wherein a sensing end of the limit switch faces downward toward an upper end of the up-down movement converting shaft, and a lower end of the up-down movement converting shaft is connected to a valve stem of the pressure regulating valve.

8. The automatic pressure regulating device according to claim 7, wherein a limit switch bracket is provided on the mounting base, and the limit switch is height-adjustably provided on the limit switch bracket along an axial direction of the up-down movement converting shaft.

Technical Field

The invention relates to the field of pressure regulating devices, in particular to an automatic pressure regulating device.

Background

At present, the automatic pressure regulating mechanism on the market is realized mostly through electric proportional valve, but electric proportional valve's drawback lies in, the great fluctuation of rear end pressure can be aroused to the small signal change in the pressure regulating process, because the proportion pressure regulating is closed loop control, the pressure fluctuation of rear end can arouse the fluctuation of making a round trip of front end input signal again, make pressure be in pressure regulating steady state always, hardly guarantee steady pressure output, make the pressure curve unsmooth, under the lower condition of test pressure, it is more obvious that the curve is the cockscomb structure, influence experimental effect.

In addition, there is another proportional valve that is adjusted manually, and an operator needs to slowly adjust the handle of the pressure adjusting valve during a test until the test pressure reaches a set pressure, which takes a long time, and therefore, when the pressure adjusting valve and the central control room are not in the same area, a plurality of people are required to operate the proportional valve.

Therefore, it is necessary to develop a fully automatic voltage control and regulation device to realize precise voltage control and regulation.

Disclosure of Invention

The invention provides an automatic pressure regulating device for solving the problems in the prior art, and aims to solve the problems that in the conventional pressure regulating mechanism, an electric proportional valve is easy to overshoot in the regulating process, stable pressure output is difficult to guarantee, and a manually regulated proportional valve is time-consuming and labor-consuming and cannot be accurately controlled.

In order to achieve the above object, the present invention provides an automatic pressure regulating device, comprising a pressure regulating valve, a rotating mechanism and a motor, wherein:

the rotating mechanism comprises an installation seat, a rotating shaft sleeve which is rotatably arranged on the installation seat and an up-and-down motion conversion shaft which is sleeved in the rotating shaft sleeve, wherein a plurality of semi-cylindrical guide grooves are axially formed in the inner wall of the rotating shaft sleeve and the outer wall of the up-and-down motion conversion shaft, the guide grooves in the rotating shaft sleeve and the guide grooves in the up-and-down motion conversion shaft are in one-to-one correspondence and form a cylindrical guide cavity, and a plurality of bearing steel balls are arranged in the guide cavity;

the pressure regulating valve is provided with a valve rod with a thread pair structure, the valve rod is connected with one end of the up-and-down motion converting shaft, and the valve rod and the up-and-down motion converting shaft are positioned on the same axis; the motor is in transmission connection with the rotating shaft sleeve, so that the motor drives the rotating shaft sleeve to rotate on the mounting seat, the rotating shaft sleeve drives the up-and-down motion conversion shaft to rotate through the bearing steel balls, the up-and-down motion conversion shaft drives the valve rod of the pressure regulating valve to rotate, and meanwhile, the valve rod of the pressure regulating valve drives the up-and-down motion conversion shaft to move freely in the rotating shaft sleeve along the axial direction.

As a further preferable technical solution of the present invention, the mounting base includes an upper plate and a lower plate arranged in parallel up and down, and two bearings respectively embedded in the upper plate and the lower plate along a same axis, and upper and lower ends of the rotary shaft sleeve are respectively sleeved in inner rings of the two bearings.

As a further preferable technical scheme of the present invention, a connecting plate with a vertical lower plate is arranged at the rear side of the lower plate, and the upper plate is connected to the connecting plate through bolts so that the mounting seat has a U-shaped configuration.

As a further preferable technical scheme of the present invention, a driven wheel is tightly matched with a rotating shaft sleeve between the upper plate and the lower plate, an end portion of an output shaft of the motor is connected with a conversion shaft, a driving wheel is arranged on the conversion shaft, and the driven wheel is connected with the driving wheel through a synchronous belt transmission, so that the motor drives the driving wheel to rotate, and the synchronous belt is driven to rotate, and the driven wheel and the rotating shaft sleeve are driven to rotate.

As a further preferable technical solution of the present invention, the motor is a stepping motor

As a further preferable technical solution of the present invention, the apparatus further includes a fixed plate, the rotating mechanism is fixedly mounted on the fixed plate through a mounting seat, the motor is fixedly mounted on the fixed plate through a motor bracket on a side surface of the rotating mechanism, the pressure regulating valve is fixedly mounted below the rotating mechanism through a pressure regulating valve bracket, and a valve rod of the pressure regulating valve is axially aligned with an up-down movement converting shaft of the rotating mechanism.

As a further preferable technical scheme of the present invention, the device further comprises a limit switch, the limit switch is arranged above the rotating mechanism, an induction end of the limit switch faces downward to an upper end of the up-down movement converting shaft, and a lower end of the up-down movement converting shaft is connected with a valve rod of the pressure regulating valve.

As a further preferable technical scheme of the invention, the mounting seat is provided with a limit switch bracket, and the limit switch is arranged on the limit switch bracket in a height-adjustable manner along the axial direction of the vertical movement conversion shaft.

According to the automatic pressure regulating device, the rotating shaft sleeve can be driven to rotate through the forward and reverse rotation of the motor, so that the up-and-down movement converting shaft rotates, and the valve rod of the pressure regulating valve is driven to rotate and move up and down to automatically regulate the pressure; closed-loop control is done with the motor to the pressure of accessible air-vent valve output, according to setting for pressure, accurate pressure regulating to can realize dynamic pressure control, it has following beneficial effect:

1) the structure is simple, the operation is convenient, and the device is suitable for various installation environments;

2) the pneumatic and hydraulic dynamic pressure regulation can be realized, the integration level is high, the structure is compact, and the use efficiency is high;

3) the pressure regulation is accurate, automatic pressure regulation is realized, and the pressure curve of the pressure regulation is smooth;

4) the pressure output by the pressure regulating valve and the motor are subjected to closed-loop control, and the pressure is automatically regulated according to the set pressure, so that the pressure regulation precision is improved;

5) compared with an electric proportional valve, the pressure regulation precision and stability are improved; compared with a manual proportional valve, the labor intensity of manual adjustment of operators is reduced.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural diagram of an example of an automatic pressure regulating apparatus according to the present invention;

FIG. 2 is a perspective view of the rotating mechanism;

fig. 3 is a front view of the rotating mechanism;

FIG. 4 is a cross-sectional view A-A of the rotating mechanism of FIG. 3;

FIG. 5 is a schematic structural view of the vertical motion converting shaft;

fig. 6 is a schematic structural view of the rotary sleeve.

In the figure: 1-fixing the plate; 2-limit switch bracket; 3-a rotating mechanism; 4-pressure regulating valve support; 5-pressure regulating valve; 6-limit switch; 7-a switching shaft; 8-driving wheel; 9-synchronous belt; 10-a motor support; 11-a motor; 12-upper plate; 13-a lower plate; 14-sealing the cover; 15-a bearing; 16-a driven wheel; 17-bearing steel balls; 18-a rotating sleeve; 19-up-down motion conversion shaft, 20-guide groove.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for clarity of description only, and are not used to limit the scope of the invention, and the relative relationship between the terms and the terms is not changed or modified substantially without changing the technical content of the invention.

As shown in fig. 1 to 6, the present invention provides an automatic pressure regulating device, comprising a pressure regulating valve 5, a rotating mechanism 3 and a motor 11, wherein:

the rotating mechanism 3 comprises a mounting seat, a rotating shaft sleeve 18 which is rotatably arranged on the mounting seat and an up-and-down motion conversion shaft 19 which is sleeved in the rotating shaft sleeve 18, wherein a plurality of semi-cylindrical guide grooves 20 are axially formed in the inner wall of the rotating shaft sleeve 18 and the outer wall of the up-and-down motion conversion shaft 19, the guide grooves 20 on the rotating shaft sleeve 18 and the guide grooves 20 on the up-and-down motion conversion shaft 19 correspond to each other one by one and enclose a cylindrical guide cavity, and a plurality of bearing steel balls 17 are arranged in the guide cavity;

the pressure regulating valve 5 in this embodiment is a proportional valve, and the pressure regulating valve 5 has a stem of a screw pair structure, which is connected to one end of the up-down movement converting shaft 19, and which is located on the same axis as the up-down movement converting shaft 19; the motor 11 is in transmission connection with the rotating shaft sleeve 18, so that the motor 11 drives the rotating shaft sleeve 18 to rotate on the mounting seat, the rotating shaft sleeve 18 drives the up-and-down movement conversion shaft 19 to rotate through the bearing steel balls 17, the up-and-down movement conversion shaft 19 drives the valve rod of the pressure regulating valve 5 to rotate, and meanwhile, the valve rod of the pressure regulating valve 5 drives the up-and-down movement conversion shaft 19 to move freely in the rotating shaft sleeve 18 along the axial direction.

The up-down movement converting shaft 19 is movable up and down relative to the rotary sleeve 18, when the converting shaft 19 drives the valve rod of the pressure regulating valve 5 to rotate, the screw pair structure of the pressure regulating valve 5 can make the valve rod screw in or out on the body of the pressure regulating valve 5, so as to drive the up-down movement converting shaft 19 to move up and down, the pressure regulating valve 5 belongs to the prior art, and the specific structure thereof is not described in detail herein.