CN218408539U

CN218408539U - Electric constant pressure valve

Info

Publication number: CN218408539U
Application number: CN202222384167.5U
Authority: CN
Inventors: 诸葛挺; 蔡福润; 陈振扬; 吕振辉
Original assignee: Shenzhen Chuansi Technology Co ltd
Current assignee: Shenzhen Chuansi Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-31
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses an electronic constant pressure valve, include: the valve comprises a valve body and an electric adjusting mechanism, wherein an upper valve cavity, a lower valve cavity, a valve port communicating the upper valve cavity with the lower valve cavity and a valve core matched with the valve port are arranged in the valve body; the electric adjusting mechanism comprises a shell fixed on the valve body, a driving motor arranged on the shell and a screw rod assembly suitable for extending into the valve body to control the valve core to move, and the driving motor drives the screw rod assembly to move so as to drive the valve core to move along the axis direction of the valve body to adjust the opening degree of the valve port. This electronic constant pressure valve has cancelled spring assembly, and through monitoring pressure sensor's pressure value, automatically regulated driving motor realizes electric control, avoids appearing the problem that the tired precision of spring descends, improves the regulation precision of constant pressure valve.

Description

Electric constant pressure valve

Technical Field

The utility model relates to a constant pressure valve technical field, concretely relates to electronic constant pressure valve.

Background

The constant pressure valve is used as pressure pilot valve of main valve in automatic control system. The constant pressure valve can be divided into a positive constant valve and a negative constant valve according to the opening principle of positive and negative actions. The positive constant valve is a normally closed pressure pilot valve, namely when the pressure is higher than a given value, a valve port is opened until the valve port is fully opened; the anti-constant valve is a normally open pressure pilot valve, namely when the pressure is higher than a given value, the valve port is closed to be small until the valve port is completely closed.

In the prior art, the traditional constant pressure valve controls the flow by taking a spring as a main adjusting piece, and the adjusting precision is reduced because the spring can generate fatigue after being used for a period of time.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the utility model is to provide an electronic constant pressure valve to constant pressure valve influences the problem of adjusting the precision because of the spring is tired easily among the solution prior art.

In order to solve the technical problem, the technical scheme of the utility model as follows:

an electric constant pressure valve comprising: the valve comprises a valve body and an electric adjusting mechanism, wherein an upper valve cavity, a lower valve cavity, a valve port communicating the upper valve cavity with the lower valve cavity, and a valve core matched with the valve port are arranged in the valve body; the electric adjusting mechanism comprises a shell fixed on the valve body, a driving motor installed on the shell and a screw rod assembly suitable for extending into the valve body to control the valve core to move, and the driving motor drives the screw rod assembly to move so as to drive the valve core to move along the axis direction of the valve body to adjust the opening degree of the valve port.

According to some embodiments of the present invention, the screw assembly includes a screw connected to an output end of the driving motor, a nut seat screwed to the screw and located in the housing, and a connecting member fixedly connected to the nut seat, the connecting member extending into the upper valve chamber and being connected to the valve core; the nut seat drives the connecting piece and the valve core to move along the axial direction of the screw rod along with the rotation of the screw rod.

According to some embodiments of the present invention, the connecting member comprises a connecting rod having one end extending into the upper valve chamber to be connected to the valve core, and a connecting sleeve connected to the other end of the connecting rod and located in the housing; the connecting sleeve is sleeved on the periphery of the nut seat and is fixedly connected with the nut seat.

According to some embodiments of the utility model, the bar hole has been seted up to the perisporium of shell, the length direction in bar hole with the length direction in connecting rod is unanimous, electric adjusting mechanism still includes to wear to locate the bar hole and with the adapter sleeve or nut seat fixed connection's locating part.

According to some embodiments of the invention, the valve element is screwed on the connecting rod.

According to some embodiments of the invention, the housing is fixed to the valve body by a sealing disc.

According to some embodiments of the utility model, the sealed dish with be equipped with the cover between the connecting rod and establish first sealing member on the connecting rod, the sealed dish with fill up between the valve body and be equipped with the second sealing member.

According to some embodiments of the invention, the shell top is equipped with proximity sensor, proximity sensor is used for detecting the position of nut seat.

According to the utility model discloses a some embodiments, the valve body includes split type setting's last valve body and lower valve body, it establishes to go up the valve pocket in going up the valve body, the valve pocket is established down in the valve body, the import is established down on the outer wall of valve body, the export is established on the outer wall of going up the valve body.

According to some embodiments of the invention, the upper valve body and the lower valve body are provided with a third sealing element at the joint position.

The utility model discloses technical scheme has following advantage:

the utility model provides an electronic constant pressure valve installs the pressure sensor monitoring feed pressure of valve pocket under, controls driving motor on the shell drives the motion of lead screw subassembly, drives the aperture of the motion of case with the control valve port to reach control flow's purpose. This electronic constant pressure valve has cancelled spring assembly, realizes the control of case through motor and lead screw, avoids appearing the problem that the tired precision of spring descends, guarantees the regulation precision of constant pressure valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an electric constant pressure valve provided in some embodiments of the present invention;

fig. 2 is a structural sectional view of an electric constant pressure valve provided in some embodiments of the present invention.

Description of the reference numerals: 1. a valve body; 2. a housing; 3. a drive motor; 4. a screw rod; 5. a nut seat; 6. connecting sleeves; 7. a connecting rod; 8. sealing the disc; 9. a proximity sensor; 11. an upper valve body; 12. a lower valve body; 13. a valve core; 21. a strip-shaped hole; 81. a first seal member; 82. a second seal member; 111. an outlet; 121. an inlet; 131. a third seal member; 122. a pressure sensor; 211. and a limiting member.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 and 2, the present invention provides an electric constant pressure valve, including: valve body 1 and electronic adjustment mechanism. An upper valve cavity, a lower valve cavity, a valve port communicating the upper valve cavity and the lower valve cavity, and a valve core 13 matched with the valve port are arranged in the valve body 1, an inlet 121 is formed in the outer wall of the valve body 1 corresponding to the lower valve cavity, an outlet 111 is formed in the side wall of the valve body 1 corresponding to the upper valve cavity, and a pressure sensor 122 for detecting feeding pressure is arranged in the lower valve cavity; the electric adjusting mechanism comprises a shell 2 fixed on the valve body 1, a driving motor 3 installed on the shell and a screw rod assembly suitable for extending into the valve body 1 to control the movement of the valve core 13, wherein the driving motor 3 drives the screw rod assembly to move so as to drive the valve core 13 to move along the axis direction of the valve body 1 to adjust the opening degree of the valve port.

Specifically, the electric constant pressure valve is provided with a valve core 13 which divides the interior of a valve body 1 into an upper valve cavity and a lower valve cavity, an output end of a driving motor 3 is connected with a screw rod 4, the screw rod 4 is driven to move to drive a nut seat 5 to move, one end of a connecting piece is fixedly connected with the nut seat 5, the other end of the connecting piece extends into the upper valve cavity to be connected with the valve core 13, and when the driving motor 3 drives the screw rod 4 to move, the nut seat 5 drives the connecting piece and the valve core 13 to move along the axial direction of the screw rod 4 along with the rotation of the screw rod 4 so as to adjust the opening degree of a valve port. The outer wall of the lower valve cavity is provided with a material inlet 121, the outer wall of the upper valve cavity is provided with a material outlet 111, and the opening degree of a valve port between the upper valve cavity and the lower valve cavity is adjusted by controlling the movement of the valve core 13 so as to achieve the purpose of adjusting the material flow.

The material flows into the lower valve cavity from the inlet 121 under the action of the drive pump, the pressure sensor 122 positioned in the lower valve cavity detects the pressure in the lower valve cavity and feeds the detected parameter information back to the industrial personal computer or the processing unit, the industrial personal computer or the processing unit controls the drive motor 3 to drive the screw rod 4 to rotate, the nut seat 5 connected with one end of the screw rod 4 drives the connecting piece to move upwards or downwards so as to adjust the movement of the valve core 13 and achieve the purpose of controlling the opening degree of the valve port, the upper valve cavity is communicated with the lower valve cavity, at the moment, because the pressure intensity in the upper valve cavity is smaller than that of the lower valve cavity, the material positioned in the lower valve cavity flows into the upper valve cavity from the valve port and flows out from the outlet 111 positioned on the side wall of the upper valve cavity.

The pressure sensor 122 monitors the pressure parameter in the lower valve cavity in real time, transmits data to the industrial personal computer or the processing unit in real time, and the processing unit controls the starting of the motor to adjust the opening and closing degree of the valve port, so as to control the pressure of the upper valve cavity, reduce the pressure fluctuation in the lower valve cavity and maintain the constant pressure of the outlet 111.

The utility model provides an electronic constant pressure valve, constant pressure valve are connected with the industrial computer to realize automatic control, through monitoring pressure sensor 122's pressure value, automatically regulated driving motor 3, and then change the aperture of valve port, electric control improves the regulation precision of constant pressure valve.

In some embodiments of the present invention, the screw rod assembly includes a screw rod 4 connected to the output end of the driving motor 3, the driving motor 3 drives the screw rod 4 to rotate, a nut seat 5 in threaded connection with the screw rod 4 and located in the housing 2, and a connecting member fixedly connected to the nut seat 5, and one end of the connecting member extends into the upper valve cavity and is connected to the valve core 13; the nut seat 5 drives the connecting piece and the valve core 13 to move along the axial direction of the screw rod 4 along with the rotation of the screw rod 4.

Specifically, the electric constant pressure valve cancels a spring device, the control of the valve core 13 is realized through the motor and the screw rod 4, the problem of the fatigue precision reduction of the spring is avoided, the regulation precision of the constant pressure valve is ensured, and the purpose of high-precision regulation is realized.

In some embodiments of the present invention, the connecting member comprises a connecting rod 7 having one end extending into the upper valve chamber and connected to the valve core 13, and a connecting sleeve 6 connected to the other end of the connecting rod 7 and located inside the housing 2; the connecting sleeve 6 is sleeved on the periphery of the nut seat 5 and is fixedly connected with the nut seat 5.

Specifically, the connecting member includes a connecting rod 7 and a connecting sleeve 6, one end of the connecting rod 7 is fixedly connected to the connecting sleeve 6, the other end of the connecting rod 7 is fixedly connected to the valve core 13, the connecting sleeve 6 is sleeved on the nut seat 5, and the connecting sleeve 6 is fixedly connected between the nut seats 5 through a screw. One end of the screw rod 4 is connected with the output end of the driving motor 3, the other end of the screw rod 4 is fixedly connected with the nut seat 5, the driving motor 3 drives the screw rod 4 to rotate so as to drive the nut seat 5 to move, and the connecting sleeve 6 sleeved on the nut seat 5 drives the connecting rod 7 to move so as to control the movement of the valve core 13, thereby achieving the purpose of controlling the opening degree of the valve port. The connecting rod 7 and the connecting sleeve 6 are arranged in a split mode, when the connecting rod 7 or the connecting sleeve 6 is damaged due to friction, only the connecting rod 7 or the connecting rod 7 needs to be replaced, and maintenance cost can be saved.

In some embodiments of the present invention, the circumferential wall of the housing 2 has a strip-shaped hole 21, the length direction of the strip-shaped hole 21 is consistent with the length direction of the connecting rod 7, and the electric adjusting mechanism further includes a locating part 211 penetrating through the strip-shaped hole 21 and fixedly connected to the connecting sleeve 6 or the nut seat 5.

Specifically, the limiting part 211 penetrates through the strip-shaped hole 21 and is connected to the connecting sleeve 6 or the nut seat 5, the limiting part 211 can limit the rotation of the connecting rod 7, and the position of the valve element 13 driven by the connecting rod 7 can be known by observing the position of the limiting part 211, so that the opening degree of the valve element 13 can be controlled more accurately. In some embodiments of the present invention, the position-limiting member 211 is a position-limiting bolt.

In some embodiments of the present invention, the housing 2 is secured to the valve body 1 by a sealing disk 8.

The utility model discloses an in some embodiments, be equipped with between sealed dish 8 and the connecting rod 7 and establish the first sealing member 81 on the connecting rod 7, fill up between sealed dish 8 and the valve body 1 and be equipped with second sealing member 82.

Concretely, the shell 2 is fixed on the valve body 1 through the sealing disc 8, a first sealing element 81 is arranged between the sealing disc 8 and the connecting rod 7 and sleeved on the connecting rod 7, a second sealing element 82 is arranged between the sealing disc 8 and the valve body 1 in a padding mode, the first sealing element 81 is used for sealing leakage of the upper valve cavity along the connecting rod 7, the second sealing element 82 is used for sealing leakage of the upper valve cavity along the sealing disc 8, the sealing disc 8 is fixed on the valve body 1 through a fastener, and the shell 2 of the adjusting piece is fixed on the sealing disc 8 through a fastener. In some embodiments of the present invention, the fastener is a screw.

In some embodiments of the present invention, the top of the housing 2 is provided with a proximity sensor 9, and the proximity sensor 9 is used for detecting the position of the nut seat 5.

Specifically, a proximity sensor 9 is provided on the top side of the housing 2, and the proximity sensor 9 is used to calibrate the lead screw 4 by the position of the nut holder 5. When the driving motor 3 rotates, the nut seat 5 is driven to move upwards to the proximity sensor 9, which is the original point of the position of the screw rod 4, namely the state that the valve port is completely opened.

In some embodiments of the present invention, the valve element 13 is screwed on the connecting rod 7.

Specifically, the threaded connection mode facilitates the detachment between the connecting rod 7 and the valve core 13, saves the installation time and improves the installation efficiency.

The utility model discloses an in some embodiments, valve body 1 includes split type setting last valve body 11 and lower valve body 12, goes up the valve pocket and establishes in last valve body 11, and lower valve pocket is established in lower valve body 12, and import 121 establishes on the outer wall of lower valve body 12, and export 111 establishes on the outer wall of last valve body 11.

Specifically, the valve body 1 is formed by pressing and fixing an upper valve body 11 and a lower valve body 12, the valve body 1 is arranged in a split manner, so that the valve body is convenient to disassemble and maintain, and when a part of the valve body is damaged, parts of the valve body can be replaced, so that the maintenance cost is reduced.

In some embodiments of the present invention, a third sealing member 131 is disposed at the joint position of the upper valve body 11 and the lower valve body 12.

Specifically, the third seal 131 prevents leakage of the material from the joint of the upper valve body 11 and the lower valve body 12.

The first sealing member 81, the second sealing member 82 and the third sealing member 131 are all made of silicone rubber or rubber material.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An electric constant pressure valve, comprising:

the feeding valve comprises a valve body (1), wherein an upper valve cavity, a lower valve cavity, a valve port communicating the upper valve cavity with the lower valve cavity and a valve core (13) matched with the valve port are arranged in the valve body (1), an inlet (121) is formed in the outer wall, corresponding to the lower valve cavity, of the valve body (1), an outlet (111) is formed in the side wall, corresponding to the upper valve cavity, of the valve body (1), and a pressure sensor (122) used for monitoring feeding pressure is arranged in the lower valve cavity;

the electric adjusting mechanism comprises a shell (2) fixed on the valve body (1), a driving motor (3) installed on the shell (2), and a screw rod assembly suitable for extending into the valve body (1) to control the valve core (13) to move, wherein the driving motor (3) drives the screw rod assembly to move so as to drive the valve core (13) to move along the axis direction of the valve body (1) to adjust the opening degree of the valve port.

2. The electric constant pressure valve according to claim 1, wherein the lead screw assembly comprises a lead screw (4) connected with the output end of the driving motor (3), a nut seat (5) in the housing (2) and in threaded connection with the lead screw (4), and a connecting piece fixedly connected with the nut seat (5), wherein the connecting piece extends into the upper valve cavity and is connected with the valve core (13); the nut seat (5) drives the connecting piece and the valve core (13) to move along the axial direction of the screw rod (4) along with the rotation of the screw rod (4).

3. The electric constant pressure valve according to claim 2, wherein the connecting piece comprises a connecting rod (7) with one end extending into the upper valve cavity and connected with the valve core (13), and a connecting sleeve (6) connected to the other end of the connecting rod (7) and positioned in the shell (2); the connecting sleeve (6) is sleeved on the periphery of the nut seat (5) and is fixedly connected with the nut seat (5).

4. The electric constant pressure valve according to claim 3, wherein a strip-shaped hole (21) is formed in the peripheral wall of the housing (2), the length direction of the strip-shaped hole (21) is consistent with the length direction of the connecting rod (7), and the electric adjusting mechanism further comprises a limiting piece (211) which is arranged in the strip-shaped hole (21) in a penetrating manner and is fixedly connected with the connecting sleeve (6) or the nut seat (5).

5. The electric constant pressure valve according to claim 3, wherein the spool (13) is screwed to the connecting rod (7).

6. An electric constant pressure valve according to claim 3, characterized in that the housing (2) is fixed to the valve body (1) by means of a sealing disc (8).

7. The electric constant pressure valve according to claim 6, characterized in that a first sealing element (81) sleeved on the connecting rod (7) is arranged between the sealing disc (8) and the connecting rod (7), and a second sealing element (82) is arranged between the sealing disc (8) and the valve body (1) in a cushioning manner.

8. The electric constant pressure valve according to claim 2, characterized in that a proximity sensor (9) is provided on the top of the housing (2), the proximity sensor (9) being used to detect the position of the nut seat (5).

9. The electric constant pressure valve according to claim 1, wherein the valve body (1) comprises an upper valve body (11) and a lower valve body (12) which are arranged in a split manner, the upper valve cavity is arranged in the upper valve body (11), the lower valve cavity is arranged in the lower valve body (12), the inlet (121) is arranged on the outer wall of the lower valve body (12), and the outlet (111) is arranged on the outer wall of the upper valve body (11).

10. An electric constant pressure valve according to claim 9, characterized in that a third seal is provided at the joint of the upper valve body (11) and the lower valve body (12).