CN216714854U

CN216714854U - Full-automatic digital overflow valve

Info

Publication number: CN216714854U
Application number: CN202123072711.4U
Authority: CN
Inventors: 沈安明
Original assignee: Hangzhou Singo Technology Co ltd
Current assignee: Hangzhou Singo Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-06-10
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a full-automatic digital overflow valve which comprises a valve body and a stepping motor fixedly connected to the valve body through a connecting flange, wherein a valve core, a valve core spring and a spring seat are arranged in the valve body, the spring seat is connected with an output shaft of the stepping motor through a screw rod, one end of the screw rod is rotatably connected to the spring seat, the other end of the screw rod is connected to the output shaft of the stepping motor in a rotation stopping manner and can move axially relative to the spring seat, and a threaded connecting block matched with the screw rod is fixedly connected to the valve body. Aiming at the technical problems that the existing overflow valve needs manual operation and is low in precision, the utility model provides a full-automatic digital overflow valve which can realize automatic operation of the overflow valve and effectively eliminate the hidden clearance trouble generated in the axial displacement motion process, so that the force change of a valve core spring is accurate and controllable.

Description

Full-automatic digital overflow valve

Technical Field

The utility model relates to the technical field of overflow valves, in particular to a full-automatic digital overflow valve.

Background

The overflow valves in the current market are all manually adjusted, are of pure mechanical structures, are low in adjustment precision, are greatly influenced by human factors, and cannot meet the requirement of customers for higher precision. And the pure mechanical structure needs manual operation, is easily influenced by misoperation of an operator and environmental vibration, and further causes a calibration result to have larger deviation. In addition, if system influence is met, compensation cannot be carried out, so that some high-requirement hydraulic systems cannot be used, and therefore the problem in the prior art is solved by developing a full-automatic digital overflow valve.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Aiming at the technical problems that the existing overflow valve needs manual operation and is low in precision, the utility model provides a full-automatic digital overflow valve which can realize automatic operation of the overflow valve and effectively eliminate the hidden clearance trouble generated in the axial displacement motion process, so that the force change of a valve core spring is accurate and controllable.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

the utility model provides a full-automatic digital overflow valve, includes the valve body to and link firmly step motor on the valve body through flange, be equipped with case, case spring and spring holder in the valve body, the output shaft of spring holder and step motor passes through the screw rod and connects, screw rod one end rotatable coupling is on the spring holder, but other end stall just relative axial displacement connect on step motor's output shaft, still link firmly with screw rod matched with threaded connection piece on the valve body.

Optionally, a motor connector is fixedly connected to an output shaft of the stepping motor, at least one sliding key is fixedly connected to the motor connector, a sliding groove matched with the sliding key is formed in the screw rod, the sliding key and the sliding groove extend along the length direction of the screw rod, and the length of the sliding groove is larger than that of the sliding key

Optionally, the sliding key is provided with at least two on the motor connector.

Optionally, a positioning disc is fixedly connected to the screw rod, a first positioning pin is arranged on the positioning disc, a second positioning pin is arranged on one side, close to the positioning disc, of the connecting flange, a third positioning pin is arranged on one side, close to the first positioning pin, of the valve body, and the first positioning pin, the second positioning pin and the third positioning pin are arranged on circular tracks with the same radius.

Optionally, the output shaft of the stepping motor is connected with a magnetic sheet, and the stepping motor further comprises an encoder for detecting the rotation amount of the magnetic sheet, and a circuit control board electrically connected with the encoder, and the circuit control board is provided with a motor control module.

Optionally, the magnetic sheet is permanent magnet steel.

Optionally, the output end of the circuit control board is provided with an aviation socket for connecting with an upper computer.

Optionally, the valve core includes a sealing sleeve and a sealing plug installed in the sealing sleeve, and a spring plug abutting against the valve core spring is arranged at an end of the sealing plug.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the full-automatic digital overflow valve can realize the automatic operation of the overflow valve, and the rotary motion is converted into linear motion by adopting the stepping motor and the screw transmission, so that the hidden clearance trouble generated in the axial displacement motion process can be effectively eliminated, and the force change of a valve core spring is accurate and controllable; the equipment has beautiful appearance, light structure, convenient maintenance, light weight and convenient installation; the device is suitable for systems with different pressure intensities, and can meet the system detection under the condition of (0-40) MPA; the pressure protection function is provided, and the use safety of the equipment is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a full-automatic digital overflow valve according to an embodiment of the present invention;

1. a valve body; 2. a connecting flange; 3. a stepping motor; 4. a valve core; 41. sealing sleeves; 42. sealing the plug; 43. a spring top; 5. a spool spring; 6. a spring seat; 7. a screw; 8. a threaded connection block; 9. a motor connector; 10. a sliding key; 11. Positioning a plate; 12. a first positioning pin; 13. a second positioning pin; 14. a third positioning pin; 15. a magnetic sheet; 16. an encoder; 17. an aviation socket.

Detailed Description

For a further understanding of the present invention, reference is made to the following detailed description of the utility model taken in conjunction with the accompanying FIG. 1.

With reference to fig. 1, the full-automatic digital overflow valve of this embodiment includes a valve body 1 and a stepping motor 3 fixedly connected to the valve body 1 through a connecting flange 2, the connecting flange 2 makes a certain distance between the valve body 1 and the stepping motor 3, a valve core 4, a valve core spring 5 and a spring seat 6 are arranged in the valve body 1, the valve core spring 5 is installed between the valve core 4 and the spring seat 6, the valve core 4 includes a sealing sleeve 41 and a sealing top 42 installed in the sealing sleeve 41, a spring top 43 abutted against the valve core spring 5 is arranged at an end of the sealing top 42, the spring seat 6 is connected with an output shaft of the stepping motor 3 through a screw rod 7, one end of the screw rod 7 is rotatably connected to the spring seat 6, specifically, the screw rod is connected through a bearing, and the other end of the screw rod 7 is locked and is connected to the output shaft of the stepping motor 3 in a manner that can move axially relative to the same, the valve body 1 is further fixedly connected with a threaded connection block 8 matched with the screw 7, the threaded connection block 8 is arranged between the stepping motor 3 and the spring seat 6, the screw 7 penetrates through the threaded connection block 8 and is in threaded fit with the threaded connection block 8, when an output shaft of the stepping motor 3 rotates, the screw 7 can synchronously rotate along with the output shaft of the stepping motor 3, due to the matching relation between the screw 7 and the threaded connection block 8, the screw 7 can displace along the axial direction when rotating, the rotary motion of the screw 7 is converted into the linear motion of the valve core spring 5, the acting force of the valve core spring 5 is adjusted, the acting force of the valve core spring 5 presses on the valve core 4, the force of the valve core 4 is also adjusted, and the pressure of the system is adjusted.

As an alternative of the present invention, a motor connector 9 is fixedly connected to an output shaft of the stepping motor 3, the motor connector 9 rotates synchronously with the output shaft of the stepping motor 3, at least one sliding key 10 is fixedly connected to the motor connector 9, a sliding slot matched with the sliding key 10 is arranged on the screw 7, the sliding key 10 and the sliding slot both extend along the length direction of the screw 7, and the length of the sliding slot is greater than that of the sliding key 10, generally, the length of the sliding slot needs to satisfy the sliding of the sliding key 10 when the screw 7 moves axially to a limit position, in this embodiment, two or more sliding keys 10 are arranged on the motor connector 9, a plurality of sliding keys 10 are distributed along the circumferential direction of the output shaft of the stepping motor 3, the rotation stopping and axial displacement matching between the screw 7 and the motor output shaft can be realized through the matching of the sliding slot and the sliding key 10, and the sliding key 10 can be designed to have a certain floating space in the radial direction in the sliding slot, thereby being suitable for processing errors in a certain range.

As an alternative of the present invention, a positioning plate 11 is fixedly connected to the screw 5, the positioning plate 11 rotates synchronously with the screw 5, a first positioning pin 12 is disposed on the positioning plate 11 at a position deviating from the axis thereof, a second positioning pin 13 is disposed on one side of the connecting flange 2 close to the positioning plate 11, a third positioning pin 14 is disposed on one side of the valve body 1 close to the first positioning pin 12, a certain gap is provided between the second positioning pin 13 and the third positioning pin 14, so that the first positioning pin 12 can rotate with the positioning plate 11 for multiple turns, the first positioning pin 12, the second positioning pin 13 and the third positioning pin 14 are disposed on circular tracks with the same radius, and when the first positioning pin 1 abuts against the second positioning pin 13 or the third positioning pin 14, the purpose of limiting the rotation of the screw 7 is achieved, and the effective stroke of the screw 7 is controlled.

As an alternative of the present invention, a magnetic sheet 15 is connected to the output shaft of the stepping motor 3, in this embodiment, the magnetic sheet 15 is a permanent magnetic steel, and magnetically attached to the tail of the output shaft of the stepping motor 3, and further includes an encoder 16 for detecting the amount of rotation of the magnetic sheet 15, and a circuit control board electrically connected with the encoder 16, the encoder 16 is arranged at the position right opposite to the permanent magnetic steel by about 1mm, the circuit control board is provided with a motor control module, the output end of the circuit control board is provided with an aviation socket 17 which is connected with an upper computer, the circuit control board is used for processing the information collected by the encoder 16, and is fed back to the stepping motor 3 through the motor control module, so that the stepping motor 3 drives the screw 7, further compressing the valve core spring 5 to achieve the effect of controlling the pressure 42 of the sealing plug, thereby forming a closed-loop control system; the structural design greatly improves the control precision of the system, and in addition, the test process can be quickly finished through the automatic control, acquisition, feedback and display of external software.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides a full-automatic digital overflow valve which characterized in that: the valve comprises a valve body and a stepping motor fixedly connected to the valve body through a connecting flange, wherein a valve core, a valve core spring and a spring seat are arranged in the valve body, the spring seat is connected with an output shaft of the stepping motor through a screw rod, one end of the screw rod is rotatably connected to the spring seat, the other end of the screw rod is connected to the output shaft of the stepping motor in a rotation stopping manner and can move axially relatively, and a threaded connecting block matched with the screw rod is further fixedly connected to the valve body.

2. The full-automatic digital overflow valve of claim 1, characterized in that: the step motor is characterized in that a motor connector is fixedly connected to an output shaft of the step motor, at least one sliding key is fixedly connected to the motor connector, a sliding groove matched with the sliding key is formed in the screw rod, the sliding key and the sliding groove extend along the length direction of the screw rod, and the length of the sliding groove is larger than that of the sliding key.

3. The full-automatic digital overflow valve of claim 2, characterized in that: at least two sliding keys are arranged on the motor connector.

4. The full-automatic digital overflow valve of claim 1, characterized in that: the positioning disc is fixedly connected onto the screw rod, a first positioning pin is arranged on the positioning disc, a second positioning pin is arranged on one side, close to the positioning disc, of the connecting flange, a third positioning pin is arranged on one side, close to the first positioning pin, of the valve body, and the first positioning pin, the second positioning pin and the third positioning pin are arranged on circular tracks with the same radius.

5. The full-automatic digital overflow valve according to any one of claims 1-4, characterized in that: the stepping motor is characterized in that an output shaft of the stepping motor is connected with a magnetic sheet, the stepping motor further comprises an encoder used for detecting the rotation amount of the magnetic sheet and a circuit control board electrically connected with the encoder, and a motor control module is arranged on the circuit control board.

6. The full-automatic digital overflow valve of claim 5, characterized in that: the magnetic sheet is permanent magnetic steel.

7. The full-automatic digital overflow valve of claim 5, characterized in that: the output end of the circuit control board is provided with an aviation socket which is used for being connected with an upper computer.

8. The full-automatic digital overflow valve of claim 5, characterized in that: the valve core comprises a sealing sleeve and a sealing top arranged in the sealing sleeve, and a spring top abutted against a valve core spring is arranged at the end part of the sealing top.