CN214331508U

CN214331508U - Corrugated pipe type line voltage regulator

Info

Publication number: CN214331508U
Application number: CN202023266007.8U
Authority: CN
Inventors: 胡亮; 刘元磊; 塞伦·斯蒂芬; 梁峰; 郝健
Original assignee: Rodalex Valve Shanghai Co ltd
Current assignee: Rodalex Valve Shanghai Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-01
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a bellows type circuit voltage regulator, including valve body, valve gap, case subassembly, ejector pin subassembly, bellows subassembly, hand wheel assembly and spring assembly, the middle part of valve body have with case subassembly complex case chamber, case chamber and entrance point and exit end intercommunication, the case subassembly including set up the case spring in the case intracavity and with case spring coupling's case, the one end and the valve body of valve gap are connected, the other end with hand wheel assembly connects, bellows subassembly and spring assembly set up the motion intracavity that forms between valve gap and valve body, the ejector pin subassembly sets up on the case chamber and with bellows subassembly connects, clearance between valve body and the bellows subassembly constitutes the pressure regulating air chamber.

Description

Corrugated pipe type line voltage regulator

Technical Field

The utility model relates to an air-vent valve technical field, in particular to bellows type circuit voltage regulator.

Background

With the continuous development of scientific technology, the demand of fluid control products is also increased, the gas control technology is a major branch of the fluid control technology, and the gas control is to control a gas medium. The use of gas control products in modern society is growing in traditional industries. The bellows type line pressure regulator can be used for regulating pressure of laboratory lines, and can regulate gas pressure in the line to a set range pressure so as to meet the requirements of corresponding gas lines.

The prior regulating valve has the following problems:

(1) the traditional high-pressure gas pressure regulator has the outlet pressure regulating range of 10-100 bar and the inlet pressure less than or equal to 400bar, but has insufficient pressure regulating performance for regulating the pressure below 50bar to the pressure regulating range of 0-10 bar,

(2) the stability of the set pressure is low,

(3) the traditional high-voltage regulator has poor voltage regulation precision,

(4) the pressure on the gas delivery line is generally lower than the pressure in the cylinder, which is costly if a conventional high pressure gas regulator is used,

(5) referring to fig. 1, in addition, the conventional high-pressure gas pressure regulator mainly includes a valve cover 1, a valve core spring 2, a valve core assembly 3, a valve body 4, a valve rod 5, a piston 6, an adjusting spring 7, a spring seat 8, a valve cover 9, a lock nut 10, a screw 11 and a hand wheel 12, and the pressure is adjusted by balancing the gas pressure in a piston cavity through the spring, and the piston reciprocates to drive a sealing member to frequently rub against the valve body, so that the sealing member is seriously abraded after long-term use, and the sealing performance and the pressure adjusting performance of an air chamber and the service life of the air chamber are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bellows type circuit voltage regulator to the aforesaid of prior art not enough and defect to solve above-mentioned problem.

A corrugated pipe type line pressure regulator comprises a valve body, a valve cover, a valve core assembly, a push rod assembly, a corrugated pipe assembly, a hand wheel assembly and a spring assembly, wherein the middle part of the valve body is provided with a valve core cavity matched with the valve core assembly, the valve core cavity is communicated with an inlet end and an outlet end, the valve core assembly comprises a valve core spring arranged in the valve core cavity and a valve core connected with the valve core spring, one end of the valve cover is connected with the valve body, the other end of the valve cover is connected with the hand wheel assembly, the corrugated pipe assembly and the spring assembly are arranged in a movement cavity formed between the valve cover and the valve body, the push rod assembly is arranged on the valve core cavity and connected with the corrugated pipe assembly, a gap between the valve body and the corrugated pipe assembly forms a pressure regulating air chamber, and the spring assembly is driven to deform by the hand wheel assembly during work, so that the push rod assembly pushes the valve core assembly to change the position, the purpose of changing the opening degree of the valve core assembly is achieved, the pressure of the pressure regulating air chamber is changed along with the change of the gas flow, and the pressure at the outlet end generates new balance under the combined action of the valve core spring, the corrugated pipe assembly and the spring assembly.

In a preferred embodiment of the present invention, the bellows assembly includes a bellows tray connected to the ejector rod assembly and a bellows having one end connected to the bellows tray, and the other end of the bellows is wrapped around the valve core cavity.

In a preferred embodiment of the present invention, the ejector rod assembly includes a valve seat disposed on the valve core cavity, a guide member disposed in the valve seat, and an ejector rod engaged with the guide member and connected to the bellows tray, and a hole for the ejector rod to extend out is disposed at one end of the valve seat close to the valve core assembly.

In a preferred embodiment of the present invention, the outer wall of the guiding member is provided with at least one air passage, the middle portion of the guiding member is provided with a guiding through hole for the push rod to pass through, and the inner diameter of the guiding through hole is adapted to the outer diameter of the push rod.

In a preferred embodiment of the present invention, the guide member is integrally formed in a triangular prism-like structure.

In a preferred embodiment of the present invention, the spring assembly includes a spring and a spring guide seat, one end of the spring is connected to the corrugated pipe tray, and the other end is connected to one end of the spring guide seat, the hand wheel assembly includes a hand wheel screwed to the valve cover away from an adjusting bolt connected to the valve body and a hand wheel connected to the adjusting bolt, the spring guide seat is disposed in the inner cavity of the adjusting bolt, and the spring guide seat and the adjusting bolt are connected through a ball.

In a preferred embodiment of the present invention, a nut is screwed on one end of the valve core close to the push rod assembly, and a sealing ring is disposed on a surface of the nut that is matched with the push rod assembly.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that: the inlet can be adjusted to 0-10 bar for conveying gas pressure, and the adjusting range is different from that of the traditional high-pressure gas pressure regulator and can not be adjusted to the pressure range. The problems of poor pressure regulating precision, low stability of regulated pressure and the like of the traditional high-pressure gas pressure regulator are solved. Bellows type circuit voltage regulator compares in traditional high-pressure gas voltage regulator with low costs, can also solve the problem that traditional high-pressure gas voltage regulator air chamber sealing performance is low, and sealed face avoids the excessive friction of sealing member and wearing and tearing because of there is not relative motion, has improved the sealing reliability and the durability of pressure regulating air chamber, and life obtains increasing.

Drawings

Fig. 1 is a schematic diagram of a prior art voltage regulator.

Fig. 2 is an exploded view of an embodiment of the present invention.

Fig. 3 is a cross-sectional view of an assembled embodiment of the invention.

Fig. 4 is a schematic structural diagram of a valve core assembly and a push rod assembly according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a push rod assembly according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a valve core assembly according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a valve body according to an embodiment of the present invention.

Fig. 8 is a cross-sectional view of fig. 7.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 2-8, a bellows-type line pressure regulator includes a valve body 100, a valve cover 200, a valve core assembly 300, a ram assembly 400, a bellows assembly 500, a handwheel assembly 600, and a spring assembly 700.

The middle of the valve body 100 has a cartridge chamber 110 that mates with the cartridge assembly 300, the cartridge chamber 110 communicating with the inlet end 120 and the outlet end 130. The valve core cavity 110 is hollow column-shaped, stands at the center of the valve body, and reserves enough assembly space for the valve seat and the guide piece, thereby facilitating the interaction of the pressure regulating element and reducing the cost. For monitoring, a pressure gauge 101 is also provided at the outlet end 120 of the valve body 100. The outer wall of the valve body 100 is provided with an inlet end 120 and an outlet end 130, the inlet end 120 and the outlet end 130 being temporarily unusable, being sealed by a plug 102.

The spool assembly 300 includes a spool spring 310 disposed within the spool chamber 110 and a spool 320 connected to the spool spring 310. In this embodiment, a nut 330 is screwed on one end of the valve core 320 close to the push rod assembly, and a sealing ring 340 is disposed on a surface of the nut 330, which is matched with the push rod assembly.

One end of the valve cover 200 is connected with the valve body 100, in order to further enhance the sealing effect, a sealing ring 210 is arranged between the valve cover 200 and the valve body 100, the other end of the valve cover 200 is connected with the handwheel assembly 600, the bellows assembly 500 and the spring assembly 700 are arranged in a motion cavity formed in front of the valve cover 200 and the valve body 100, the ejector rod assembly 400 is arranged on the valve core cavity 110 and connected with the bellows assembly 500, and a gap between the valve body 100 and the bellows assembly 500 forms a pressure regulating air chamber.

The bellows assembly 500 in this embodiment includes a bellows tray 510 connected to the ram assembly 400, and a bellows 520 having one end connected to the bellows tray 510, and the other end of the bellows 520 covers the periphery of the spool chamber 110. The poppet assembly 400 includes a valve seat 410 disposed on the valve core chamber 110, a guide 420 disposed in the valve seat 410, and a poppet 430 engaged with the guide 420 and connected to the bellows tray 510, a sealing ring 111 is disposed between the valve seat 410 and the valve core chamber 110, and a hole 411 for extending the poppet 430 is disposed at one end of the valve seat 410 close to the valve core assembly. The outer wall of the guide member 420 is at least provided with a gas passing channel 421, the guide member 420 of the present embodiment is integrally in a triangular prism-like structure, the middle part of the guide member 420 is provided with a guide through hole 422 for the push rod 430 to pass through, and the inner diameter of the guide through hole 422 is matched with the outer diameter of the push rod 430.

The spring assembly 700 includes a spring 710 and a spring guide 720, and one end of the spring 710 is connected to the bellows tray 510 and the other end is connected to one end of the spring guide 720. The handwheel assembly 600 comprises an adjusting bolt 610 screwed on one end of the valve cover 200 far away from the valve body 100 and a handwheel 640 connected with the adjusting bolt 610 through a bolt 620 and a washer 630, a spring guide seat 720 is arranged in an inner cavity of the adjusting bolt 610 and connected with the adjusting bolt 610 through a ball 650, a limit nut 660 is further arranged on the periphery of the adjusting bolt 610, the stroke of the adjusting bolt 610 can be changed by changing the position of the limit nut 660, and a cover 641 is further arranged on the handwheel 640. Grease 670 is provided between the ball 650 and the spring guide 720 and between the adjustment bolt 610 and the valve cap 200.

The working principle of the utility model is as follows:

(1) if the gas pressure is increased from the zero position, the hand wheel 640 is rotated to drive the adjusting bolt 610 to rotate and compress the spring 710, the spring 710 drives the corrugated pipe tray 510 to push the corrugated pipe 520, the corrugated pipe 520 is stressed to generate elastic deformation and drive the ejector rod 430, then the ejector rod 430 pushes the valve core assembly 300 open, gas flows from an inlet to an outlet, the pressure at the outlet end of the corrugated pipe type line pressure regulator is gradually increased to a required set pressure value and is balanced with the acting force of the corrugated pipe 520 and the spring 710, and the pressure at the outlet end is maintained at a certain value within the range of 0-10 bar; if the pressure at the outlet end of the bellows type line pressure regulator is higher than the expected set pressure value, the bellows 520 deforms and extends under stress and pushes the bellows tray 510, so that the ejector rod 430 loosens the effect on the valve core assembly 300, the influence degree of the valve core assembly 300 by the valve core spring 310 is increased, the opening degree of the valve core assembly 300 is reduced, the flow of gas flowing in from the inlet end is reduced, and the pressure is reduced, so that the pressure at the outlet end of the bellows type line pressure regulator generates new balance; if bellows type circuit voltage regulator outlet end pressure is less than when the expected pressure value of setting for, gaseous effort to bellows 520 diminishes, spring 710 drives bellows tray 510 motion to compress bellows 520, and then jack-up ejector pin 430 motion, ejector pin 430 promotes valve core subassembly 300, the grow of valve core subassembly 300 aperture, gas flow is along with the grow, make bellows type circuit voltage regulator outlet end pressure produce new equilibrium, with this realization with the import for 0 ~ 50bar conveying gas pressure adjusts to 0 ~ 10 bar. The bellows type line pressure regulator can regulate the pressure of conveying gas with an inlet of 0-50 bar to 0-10 bar, and the regulating range is different from that of a traditional high-pressure gas pressure regulator and can not be regulated to the pressure range.

(2) The top rod 430 is thin, so that in order to avoid the instability or bending of the top rod 430 caused by stress, the inner diameter of the guide through hole 422 is matched with the outer diameter of the top rod 430, and the relative positions of the top rod 430, the valve core assembly 300 and the valve seat 410 are accurately positioned, so that the precision stability is met.

(3) The sealing elements between the valve core assembly 300 and the valve seat 410 and the guide member 420 are integrated in the valve core assembly 300, so that excessive abrasion of the sealing elements due to friction is avoided, and the situation that the sealing position is not accurate due to movement is avoided.

(4) On the premise of meeting the requirements, the pressure regulating function is realized by adopting more economical structural parts and materials. To protect the bellows and support one side of the bellows, the bellows tray 510 is made of plastic, fitting the spring 710 and the bellows 520. The bellows tray 510 uses injection molding to reduce cost, and the valve body structure reduces hole system layout and simplifies the gas circuit, simplifying the valve core assembly.

(5) Wherein adopt bellows, sealing member, valve body to constitute the pressure regulating air chamber, sealed face avoids the sealing member excessive friction and wearing and tearing because of there is not relative motion, has improved the sealing reliability and the durability of pressure regulating air chamber, and life obtains increasing.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents.

Claims

1. The utility model provides a bellows type circuit voltage regulator, its characterized in that, includes valve body, valve gap, case subassembly, ejector pin subassembly, bellows subassembly, hand wheel subassembly and spring assembly, the middle part of valve body have with case subassembly complex case chamber, case chamber and entrance point and exit end intercommunication, the case subassembly including set up the case spring in the case intracavity and with case spring coupling's case, the one end and the valve body of valve gap are connected, the other end with hand wheel subassembly connects, bellows subassembly and spring assembly set up the motion intracavity that forms between valve gap and valve body, the ejector pin subassembly sets up on the case chamber and with bellows subassembly connects, clearance between valve body and the bellows subassembly constitutes the pressure regulating air chamber.

2. A bellows-type line regulator according to claim 1, wherein the bellows assembly includes a bellows tray connected to the plunger assembly and a bellows having one end connected to the bellows tray, and the other end of the bellows is wrapped around the spool chamber.

3. A bellows-type line regulator according to claim 2, wherein the plunger assembly comprises a valve seat disposed on the valve core chamber, a guide member disposed in the valve seat, and a plunger engaged with the guide member and connected to the bellows tray, and a hole for the plunger to protrude is provided at an end of the valve seat close to the valve core assembly.

4. A bellows-type line pressure regulator according to claim 3, wherein the outer wall of the guide member is provided with at least one air passage, the middle portion of the guide member is provided with a guide through hole for the push rod to pass through, and the inner diameter of the guide through hole is adapted to the outer diameter of the push rod.

5. A bellows-type line regulator according to claim 4, wherein said guide member is formed in an overall triangular prism-like configuration.

6. A bellows-type line pressure regulator as claimed in claim 2, wherein the spring assembly comprises a spring and a spring guide seat, one end of the spring is connected to the bellows tray, the other end of the spring is connected to one end of the spring guide seat, the handwheel assembly comprises an adjusting bolt screwed to the end of the valve cover away from the valve body and a handwheel connected to the adjusting bolt, and the spring guide seat is disposed in the inner cavity of the adjusting bolt and connected to the spring guide seat via a ball.

7. A bellows-type line pressure regulator according to claim 1, wherein a nut is screwed onto the valve core at an end thereof adjacent to the plunger assembly, and a sealing ring is disposed on a surface of the nut engaging the plunger assembly.