CN210240747U

CN210240747U - Stepless regulation bypass device applied to gas proportional valve

Info

Publication number: CN210240747U
Application number: CN201921249188.8U
Authority: CN
Inventors: Xuejun Tan; 谭学军
Original assignee: FOSHAN KEHAO COMBUSTION EQUIPMENT MANUFACTURING CO LTD
Current assignee: FOSHAN KEHAO COMBUSTION EQUIPMENT MANUFACTURING CO LTD
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-03
Anticipated expiration: 2029-07-31

Abstract

The utility model provides a be applied to gaseous proportional valve's infinitely variable control bypass device, is including being used for increasing the infinitely variable control bypass device who switches on the cross-section between adjusting first cavity and the second cavity, infinitely variable control bypass device is including setting up regulation seat and the regulating spindle on the valve body, be equipped with the casing passageway of the first cavity of intercommunication on the regulation seat, be equipped with the gradual change passageway of channel cross-section grow, the axle center passageway of intercommunication gradual change passageway and second cavity on the regulation seat, casing passageway and gradual change passageway are connected, the cross-section that switches on between regulating seat internal rotation regulation casing passageway and the gradual change passageway of regulating spindle. The utility model discloses a structural style that infinitely variable control bypass device can change bypass circulation cross-section in succession changes the gas flow that flows through the bypass, can guarantee that the proportional valve can export a stable low discharge gas, makes and is equipped with the utility model discloses a proportional valve has practicality, suitability, makes the stability of proportional valve promoted greatly simultaneously.

Description

Stepless regulation bypass device applied to gas proportional valve

Technical Field

The utility model relates to an use adjusting device on the proportional valve, concretely relates to be applied to gaseous proportional valve's infinitely variable control bypass device.

Background

The proportional valve is widely applied to pipe network components needing fluid flow proportion regulation, is a self-operated regulating device, and is generally divided into two types of devices applied to liquid and gas. The existing gas proportional valve generally comprises a valve body and a valve core assembly for regulating the size of gas circulation, wherein a first cavity with a gas inlet and a second cavity with a gas outlet are arranged on the valve body, the first cavity and the second cavity are formed by arranging the valve core assembly in the valve body to separate the inner cavity of the valve body, when the valve core assembly is used, the valve core assembly conducts the first cavity and the second cavity through external force driving activity to enable gas to circulate, and the size of the section conducted between the first cavity and the second cavity is determined by the size of the external force. However, sometimes ideal experimental environment is applied to the industrial field, and the problem of too low feedback pressure under various small flow conditions can occur: pressure feedback is difficult to detect if the air flow is too small; the pressure taking position of the air feedback pipe is not standard and is in a pressure dead zone; the pressure loss is large due to the fact that the length and the quality of a feedback pipe are not standardized under the condition that the feedback pressure is not high; the compensation spring deformation caused by the difference in temperature of seasons, regions and environments is not enough to carry out dynamic stress balance and the like, and at the moment, the external force cannot ensure that the driving valve core assembly is conducted with the first cavity and the second cavity and the section is conducted stably, and the proportional valve cannot output stable small-flow gas.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a stepless regulation bypass device applied to a gas proportional valve.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a be applied to gaseous proportional valve's infinitely variable control bypass device, is including being used for increasing the infinitely variable control bypass device who switches on the cross-section between adjusting first cavity and the second cavity, infinitely variable control bypass device is including setting up regulation seat and the regulating spindle on the valve body, be equipped with the casing passageway of the first cavity of intercommunication on the regulation seat, be equipped with the gradual change passageway of channel cross-section grow, the axle center passageway of intercommunication gradual change passageway and second cavity on the regulation seat, casing passageway and gradual change passageway are connected, the cross-section that switches on between regulating seat internal rotation regulation casing passageway and the gradual change passageway of regulating spindle.

The utility model discloses in, infinitely variable control bypass device still includes fastening screw, be equipped with spacing groove I on the regulation seat, be equipped with spacing groove II on the regulating spindle, fastening screw connects in spacing groove I, spacing groove II.

The utility model discloses in, be equipped with the adjustment tank of adjusting with the cooperation of outside spanner on the tip of regulating spindle.

The utility model discloses in, be equipped with observable rotatory scale on the tip of adjusting the seat.

The utility model discloses in, the minimum channel section of gradual change passageway is corresponding with the minimum of rotatory scale, and the maximum channel section of gradual change passageway is corresponding with the maximum value of rotatory scale.

The utility model discloses in, axle center access connection is on the biggest channel cross-section of gradual change passageway.

The utility model discloses in, be equipped with at least one seal groove I on the profile of adjusting the seat, install sealing rubber ring I on the seal groove I.

The utility model discloses in, be equipped with at least one seal groove II on the regulating spindle, install sealing rubber ring II on the seal groove II.

The utility model has the advantages that: the utility model discloses a structural style that infinitely variable control bypass device can change bypass circulation cross-section in succession changes the gas flow that flows through the bypass, can solve the problem that the background art provided, guarantees that the proportional valve can export a stable low discharge gas, makes and is equipped with the utility model discloses a proportional valve has practicality, suitability, makes the stability of proportional valve promoted greatly simultaneously.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is an exploded view of a continuously variable bypass device;

FIG. 2 is a diagram of a proportional valve in cooperation with a continuously variable bypass device;

FIG. 3 is a schematic diagram of a proportional valve equipped with a continuously variable bypass device;

FIG. 4 is a schematic view of the structure A-A in FIG. 3;

FIG. 5 is a schematic view of the structure of B-B in FIG. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Referring to fig. 1 to 5, a stepless adjusting bypass device 1 applied to a gas proportional valve includes the stepless adjusting bypass device 1 for increasing and adjusting a conduction section between a first cavity 200 and a second cavity 300. Further, infinitely variable control bypass device 1 is including setting up regulation seat 11 and the regulating spindle 12 on valve body 100, be equipped with the casing passageway 2 of the first cavity 200 of intercommunication on the regulation seat 11, be equipped with gradual change passageway 3 that the channel cross-section progressively enlarges, the axle center passageway 4 of intercommunication gradual change passageway 3 and second cavity 300 on the regulation seat 11, axle center passageway 4 is connected on the biggest channel cross-section of gradual change passageway 3, and casing passageway 2 is connected with gradual change passageway 3, the section of switching on between regulating spindle 12 rotation regulation casing passageway 2 and the gradual change passageway 3 in regulation seat 11.

Preferably, the adjusting seat 11 includes a housing and an installing head connected to an end of the housing, the housing is provided with a thread, the installing head is hexagonal, and when the adjusting seat is installed, the housing is inserted into the valve body 100, and the wrench and the installing head are used to cooperate to rotate the housing, so that the thread of the adjusting seat is matched, connected and fixed with the valve body 100. Further, the housing passage 2 may be a circular hole formed in the housing, or may be a section of groove formed by circular cutting the circular hole around the housing.

Preferably, the stepless adjusting bypass device 1 further comprises a fastening screw 13. Further, be equipped with spacing groove I111 on adjusting seat 11, the appearance of spacing groove I111 can be round hole or one section groove, requires to be unified with 2 forms of casing passageway, and when spacing groove I111 was the round hole, it had the screw thread in the round hole. Further, be equipped with spacing groove II 121 on regulating spindle 12, spacing groove II 121 is the arc wall of one section setting on the 12 profiles of regulating spindle, the utility model discloses an above structural style connects fastening screw 13 in spacing groove I111, spacing groove II 121, and regulating spindle 12 includes the pivot and connects the spacing head at the pivot tip moreover, and regulating spindle 12 installs in regulation seat 11 to through spacing head and fastening screw 13 combination, restriction regulating spindle 12 removes, avoids regulating spindle 12 to deviate from outside regulation seat 11, effectively improves the utility model discloses a life.

Preferably, an observable rotary scale 6 is arranged at the end of the adjusting seat 11, a reference line which is matched with the rotary scale 6 for measurement is arranged at the end of the adjusting shaft 12, the minimum channel section of the gradual change channel 3 corresponds to the minimum value (min position) of the rotary scale 6, the maximum channel section of the gradual change channel 3 corresponds to the maximum value (max position) of the rotary scale 6, when the adjusting shaft 12 is rotated, the rotating distance of the adjusting shaft 12 can be observed through the reference line, and the conduction section between the shell channel 2 and the gradual change channel 3 is known.

Preferably, be equipped with two seal grooves I7 on the profile of adjusting seat 11, these two seal grooves I7 set up respectively on the both ends of casing, install sealing rubber ring I on the seal groove I7. Furthermore, at least one sealing groove II 8 located on the rotating shaft is arranged on the adjusting shaft 12, and a sealing rubber ring II is installed on the sealing groove II 8. Above-mentioned structure is favorable to the utility model discloses install fast on valve body 100 to guarantee the leakproofness after the installation, effectively avoid appearing gas leakage phenomenon.

Preferably, the end of the adjusting shaft 12 is provided with an adjusting groove 5 matched with an external wrench for adjustment, the adjusting groove 5 is arranged at the end of the limiting head, and the adjusting groove 5 is a hexagonal groove, so that a user can rotate the adjusting shaft 12 by using a hexagonal wrench.

The valve core component comprises a zero-pressure spring reset component 400, a compensating spring starting component 500 and a valve plate component 600 arranged between the zero-pressure spring reset component 400 and the compensating spring starting component 500 and used for isolating the first cavity 200 from the second cavity 300, the compensating spring starting component 500 drives the valve plate component 600 to be pushed open by external force, so that the first cavity 200 is communicated with the second cavity 300, gas in the first cavity 200 flows to the second cavity 300 to be discharged, when the external force gives too small force to the compensating spring starting component 500, the compensating spring starting component 500 is not enough to open the valve plate component 600 to conduct the first cavity 200 and the second cavity 300, at the moment, a stepless regulation bypass device 1 is needed to be used, the regulating shaft 12 is regulated from a 'min' position to a 'max' position, the conduction section between the shell channel 2 and the gradual change channel 3 is changed until the required proportioning position is regulated, and stable circulation of small-flow gas can be maintained all the time through the utility model, meets the use requirement.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

1. A stepless regulation bypass device applied to a gas proportional valve is characterized in that: including being used for increasing infinitely variable control bypass device (1) of switching on the cross section between first cavity (200) of regulation and second cavity (300), infinitely variable control bypass device (1) is including setting up regulation seat (11) and regulating spindle (12) on valve body (100), be equipped with casing passageway (2) of intercommunication first cavity (200) on adjusting seat (11), be equipped with gradual change passageway (3) of passageway cross section, axle center passageway (4) of intercommunication gradual change passageway (3) and second cavity (300) on adjusting seat (11), casing passageway (2) are connected with gradual change passageway (3), the cross section that switches on between casing passageway (2) and gradual change passageway (3) is adjusted in regulation seat (11) internal rotation to regulating spindle (12).

2. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: stepless regulation bypass device (1) still includes fastening screw (13), be equipped with spacing groove I (111) on adjusting seat (11), be equipped with spacing groove II (121) on adjusting shaft (12), fastening screw (13) are connected in spacing groove I (111), spacing groove II (121).

3. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: and an adjusting groove (5) matched with an external wrench for adjustment is arranged at the end part of the adjusting shaft (12).

4. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: the end part of the adjusting seat (11) is provided with an observable rotary scale (6).

5. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: the minimum channel section of the gradual change channel (3) corresponds to the minimum value of the rotary scale (6), and the maximum channel section of the gradual change channel (3) corresponds to the maximum value of the rotary scale (6).

6. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: the axial center channel (4) is connected to the maximum channel section of the gradual change channel (3).

7. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: the profile of adjusting seat (11) is equipped with at least one seal groove I (7), install sealing rubber ring I on seal groove I (7).

8. The stepless regulation bypass device applied to the gas proportional valve is characterized in that: and at least one sealing groove II (8) is arranged on the adjusting shaft (12), and a sealing rubber ring II is arranged on the sealing groove II (8).