CN212363857U

CN212363857U - Gas dilution device of pressure reducing valve

Info

Publication number: CN212363857U
Application number: CN202020967510.7U
Authority: CN
Inventors: 张宇; 顾鑫鸣
Original assignee: Ningbo Anlian Testing Co ltd
Current assignee: Ningbo Anlian Testing Co ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-01-15
Anticipated expiration: 2030-06-01

Abstract

The utility model discloses a gaseous diluting device of relief pressure valve, including the gas cylinder, the right side of gas cylinder is provided with the relief pressure valve body, and the right side of relief pressure valve body is linked together through first hose and two switch three-way valves, two switch three-way valves's upside is provided with external gas circuit, two switch three-way valves's right side is connected with the second hose, and the right side of second hose is connected with first swivel nut through the connector, the outside fixedly connected with installation head of first swivel nut, the upside of installation head is provided with sealing mechanism, the outside fixedly connected with kelly of second hose, the needle tubing is installed on the right side of installation head. The utility model discloses be provided with connector and sealing mechanism, guarantee the leakproofness of second hose and installation head connection in-process, be provided with loop bar and screw rod, control the home range of piston in the needle tubing for gas in the needle tubing can not be flooded once more after reaching appointed scale, ensures the accuracy of experimental data.

Description

Gas dilution device of pressure reducing valve

Technical Field

The utility model relates to a gaseous sample detection technical field specifically is the gaseous diluting device of relief pressure valve.

Background

In the environmental testing industry, sample monitoring of gas is an indispensable part, and in the process of gas sample detection, it is usually necessary to use standard samples to perform regular calibration on the instrument or to check whether the curve is standard or has a deviation by preparing samples with known concentrations as quality control samples.

When detecting different concentration samples, need dispose the quality control appearance of different concentrations, quality control appearance on the market is various, if purchase the standard sample of different concentrations in a large number, can cause unnecessary economic burden to the company, also can cause a large amount of wastes, use the quality control appearance of high concentration standard sample configuration low concentration to have become the necessary means that each laboratory saved the spending, therefore need utilize gas dilution device auxiliary work, but current gas dilution device leakproofness is not good in the use, easily receive atmospheric pressure to influence and drop, influence normal work, and current gas dilution device is difficult to control the home range of the inside piston of needle tubing, be difficult to guarantee the accuracy of dilution in-process, the practicality is lower, therefore need the gaseous dilution device of relief pressure valve to solve above-mentioned problem urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gaseous diluting device of relief pressure valve to solve the not good and problem that is difficult to guarantee the accuracy of diluting the in-process of leakproofness that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the pressure reducing valve gas diluting device comprises a gas bottle, wherein a pressure reducing valve body is arranged on the right side of the gas bottle, the right side of the pressure reducing valve body is communicated with a double-switch three-way valve through a first hose, an external gas circuit is arranged on the upper side of the double-switch three-way valve, a second hose is connected to the right side of the double-switch three-way valve, a first screw sleeve is connected to the right side of the second hose through a connector, an installing head is fixedly connected to the outer side of the first screw sleeve, a sealing mechanism is arranged on the upper side of the installing head, a clamping rod is fixedly connected to the outer side of the second hose, a needle tube is installed on the right side of the installing head, a fixing block is fixedly connected to the bottom end of the needle tube, a connecting block is arranged inside the fixing block, a second groove is, the right side of connecting block is connected with the loop bar, and the right side of loop bar is connected with the second swivel nut through the bearing, the outside fixedly connected with knob of second swivel nut, the inside of second swivel nut is inserted and is equipped with the screw rod, and the screw rod extends to the inside of loop bar.

Preferably, a connector is inserted into the inner side of the first threaded sleeve, and the connector is matched with the first threaded sleeve in size.

Preferably, sealing mechanism includes dead lever, first recess, first spring and stopper, first recess has been seted up to the bottom of dead lever, and the inside of first recess has the stopper through first spring coupling.

Preferably, the bottom of stopper sets up to the inclined plane structure, the stopper is connected with the one end of first spring, and the other end of first spring is connected with the inner wall of first recess, the stopper constitutes elastic telescopic structure through first spring and first recess.

Preferably, the inside of fixed block is seted up with fixture block matched with spread groove, the fixture block passes through inside the second spring extends to the spread groove.

Preferably, the left end of the screw is square, and the outer side of the screw is the same as the inner side of the loop bar.

Compared with the prior art, the beneficial effects of the utility model are that: the gas diluting device of the pressure reducing valve is provided with the connector and the sealing mechanism, the sealing performance of the second hose and the mounting head in the connecting process is guaranteed, the loop bar and the screw rod are arranged, the moving range of the piston in the needle tube is controlled, the gas in the needle tube can not be filled again after reaching the specified scales, and the accuracy of experimental data is guaranteed.

(1) The device is through being provided with connector and sealing mechanism for the second hose is guaranteeing the leakproofness in second hose and the first connection of erection head process at the in-process of carrying gas to the needle tubing, avoids receiving the drop that the atmospheric pressure influences and lead to the second hose, and while easy operation has strengthened the efficiency in the user use, and then the practicality of reinforcing this device.

(2) The device is through being provided with loop bar and screw rod, and convenient to use person is through rotating the knob, changes the combination length between screw rod and the loop bar for the user is according to self demand, controls the home range of piston in the needle tubing, makes gas in the needle tubing can not fill once more after reaching appointed scale, ensures experimental data's accuracy, strengthens the functional of this device, has strengthened the practicality of this device greatly.

Drawings

FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;

fig. 2 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;

fig. 3 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention;

FIG. 4 is a schematic front sectional view of the structural sealing mechanism of the present invention;

fig. 5 is a schematic front view of the structure of the present invention.

In the figure: 1. a gas cylinder; 2. a pressure reducing valve body; 3. a first hose; 4. a double-switch three-way valve; 5. connecting an air path externally; 6. a second hose; 7. a connector; 8. a first threaded sleeve; 9. a mounting head; 10. a sealing mechanism; 101. fixing the rod; 102. a first groove; 103. a first spring; 104. a limiting block; 11. a needle tube; 12. a fixed block; 13. connecting blocks; 14. a second groove; 15. a cross bar; 16. a second spring; 17. a clamping block; 18. a loop bar; 19. a second thread insert; 20. a knob; 21. a screw; 22. and (5) clamping the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides an embodiment:

the gas diluting device of the pressure reducing valve comprises a gas bottle 1, a pressure reducing valve body 2 is arranged on the right side of the gas bottle 1, the right side of the pressure reducing valve body 2 is communicated with a double-switch three-way valve 4 through a first hose 3, an external gas circuit 5 is arranged on the upper side of the double-switch three-way valve 4, a second hose 6 is connected on the right side of the double-switch three-way valve 4, a first screw sleeve 8 is connected on the right side of the second hose 6 through a connector 7, an installing head 9 is fixedly connected on the outer side of the first screw sleeve 8, a sealing mechanism 10 is arranged on the upper side of the installing head 9, a clamping rod 22 is fixedly connected on the outer side of the second hose 6, the connector 7 is inserted into the inner side of the first screw sleeve 8, the connector 7 is matched with the first screw sleeve 8 in size, the sealing mechanism 10 comprises a fixing rod 101, a first groove 102, a first spring 103 and a limiting block 104, the, the bottom end of the limiting block 104 is set to be an inclined plane structure, the limiting block 104 is connected with one end of a first spring 103, the other end of the first spring 103 is connected with the inner wall of the first groove 102, the limiting block 104 forms an elastic telescopic structure with the first groove 102 through the first spring 103, a first threaded sleeve 8 matched with the connecting head 7 is in threaded fit with the limiting block by rotating the connecting head 7 connected to the right side of the second hose 6 and is inserted into the first threaded sleeve 8, when the second hose 6 moves, a clamping rod 22 connected to the upper side of the second hose 6 is forced to be in contact with the limiting block 104, as the bottom end of the limiting block 104 is set to be the inclined plane structure, the clamping rod 22 is in contact with the limiting block 104 with the inclined plane design and is embedded in the first groove 102 by extruding the first spring 103, and after the connecting head 7 is completely inserted into the first threaded sleeve 8, the clamping rod 22 is not in contact with the limiting block 104, the limiting block 104 is reset through the resilience force of the first spring 103, the left side of the clamping rod 22 is limited, and the sealing performance of the device is guaranteed.

A needle tube 11 is arranged on the right side of the mounting head 9, a fixing block 12 is fixedly connected to the bottom end of the needle tube 11, a connecting block 13 is arranged inside the fixing block 12, a second groove 14 is formed in the top end of the connecting block 13, a cross rod 15 is fixedly connected inside the second groove 14, a clamping block 17 is connected to the outer side of the cross rod 15 through a second spring 16, a loop bar 18 is connected to the right side of the connecting block 13, a second threaded sleeve 19 is connected to the right side of the loop bar 18 through a bearing, a knob 20 is fixedly connected to the outer side of the second threaded sleeve 19, a screw 21 is inserted into the second threaded sleeve 19 and extends to the inside of the loop bar 18, a connecting groove matched with the clamping block 17 is formed in the fixing block 12, the clamping block 17 extends to the inside of the connecting groove through the second spring 16, the left end of the screw 21 is square, the outer side size of the screw 21 is the same as the inner side, the connecting block 13 is pushed upwards, so that the clamping block 17 arranged on the upper side of the connecting block 13 is embedded in the second groove 14 under stress, after the clamping block 17 is contacted with the connecting groove, the clamping block 17 is reset through the resilience force of the second spring 16 and clamped in the connecting groove to realize the installation of the connecting block 13, then the knob 20 can be screwed by using the connecting block 17, so that the second screw sleeve 19 connected with the knob 20 rotates simultaneously, the second screw sleeve 19 drives the screw rod 21 sleeved in the second screw sleeve 19 to be in threaded fit with the screw rod in the rotating process, because the left side of the screw rod 21 is square, the screw rod 21 cannot break the driving of the knob 20 to idle in the sleeve rod 18, so that the screw rod 21 stretches out and draws back in the sleeve rod 18, a user can adjust the screw rod 21 to a proper position according to proportioning requirement, the control of the movement range of the piston in the needle tube 11 is realized, and then the connecting block 13, so that the connecting block 13 is separated from the connecting groove formed in the inside of the fixing block 12, thereby realizing the removal of the connecting block 13 and taking the needle tube 11 out of the device.

The working principle is as follows: when the gas cylinder is used, the gas cylinder 1 can be arranged near the outlet of the external gas circuit 5, the connector 7 connected with the right side of the second hose 6 is rotated, so that the first screw sleeve 8 matched with the connector 7 is in threaded fit with the connector and is inserted into the first screw sleeve 8, when the second hose 6 moves, the clamping rod 22 connected with the upper side of the second hose 6 is stressed to be in contact with the limiting block 104, because the bottom end of the limiting block 104 is arranged to be in an inclined surface structure, the clamping rod 22 is in contact with the limiting block 104 in an inclined surface design and is embedded into the first groove 102 by extruding the first spring 103, when the connector 7 is completely inserted into the first screw sleeve 8, the clamping rod 22 is not in contact with the limiting block 104, so that the limiting block 104 is reset through the resilience of the first spring 103, the left side of the clamping rod 22 is limited, the sealing performance of the device is ensured, at this moment, the connecting block 13 can be placed at the bottom end of the, the connecting block 13 is pushed upwards, so that the clamping block 17 arranged on the upper side of the connecting block 13 is embedded in the second groove 14 under stress, after the clamping block 17 is contacted with the connecting groove, the clamping block 17 is reset through the resilience force of the second spring 16 and clamped in the connecting groove to realize the installation of the connecting block 13, then the knob 20 can be screwed by using the connecting block 17, so that the second screw sleeve 19 connected with the knob 20 rotates simultaneously, the second screw sleeve 19 drives the screw rod 21 sleeved in the second screw sleeve 19 to be in threaded fit with the screw rod in the rotating process, because the left side of the screw rod 21 is square, the screw rod 21 cannot break the driving of the knob 20 to idle rotate in the sleeve rod 18, the screw rod 21 can stretch out and draw back in the sleeve rod 18, a user can adjust the screw rod 21 to a proper position according to proportioning requirements, the control of the movement range of the piston in the needle tube 11 is realized, and the gas in the needle tube 11 cannot be filled again after reaching, the functionality of the device is enhanced, then the valve at the upper side of the double-switch three-way valve 4 communicated with the external gas circuit 5 is closed, the gas circuit of the gas bottle 1 is opened, so that the gas flows into the double-switch three-way valve 4 through the pressure reducing valve body 2 and then enters the inside of the needle tube 11 through the double-switch three-way valve 4, when the needle tube 11 reaches the designated scale, the piston is limited by the right side of the screw rod 21, the movement is stopped, the gas cylinder 1 is screwed, then the pipeline valve on the external gas circuit 5 is opened, nitrogen enters the needle tube 11 through the double-switch three-way valve 4, the configuration of quality control samples is completed, at this time, a user can extrude the fixture block 17, so that the second springs 16 connected with the latch blocks 17 are synchronously forced to approach each other, and at this time, the connecting blocks 13 can be pulled downwards, so that the connecting block 13 is separated from the connecting groove formed in the inside of the fixing block 12, thereby realizing the removal of the connecting block 13 and taking the needle tube 11 out of the device.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Gaseous diluting device of relief pressure valve, including gas cylinder (1), its characterized in that: the right side of gas cylinder (1) is provided with relief pressure valve body (2), and the right side of relief pressure valve body (2) is linked together through first hose (3) and two switch three-way valve (4), the upside of two switch three-way valve (4) is provided with external gas circuit (5), the right side of two switch three-way valve (4) is connected with second hose (6), and the right side of second hose (6) is connected with first swivel nut (8) through connector (7), the outside fixedly connected with installation head (9) of first swivel nut (8), the upside of installation head (9) is provided with sealing mechanism (10), the outside fixedly connected with kelly (22) of second hose (6), needle tubing (11) is installed on the right side of installation head (9), and the bottom fixedly connected with fixed block (12) of needle tubing (11), the inside of fixed block (12) is provided with connecting block (13), and second recess (14) have been seted up on the top of connecting block (13), inside fixedly connected with horizontal pole (15) of second recess (14), and the outside of horizontal pole (15) is connected with fixture block (17) through second spring (16), the right side of connecting block (13) is connected with loop bar (18), and the right side of loop bar (18) is connected with second swivel nut (19) through the bearing, outside fixedly connected with knob (20) of second swivel nut (19), the inside of second swivel nut (19) is inserted and is equipped with screw rod (21), and screw rod (21) extend to the inside of loop bar (18).

2. The pressure reducing valve gas dilution device of claim 1, wherein: the connector (7) is inserted into the inner side of the first threaded sleeve (8), and the connector (7) is matched with the first threaded sleeve (8) in size.

3. The pressure reducing valve gas dilution device of claim 1, wherein: the sealing mechanism (10) comprises a fixing rod (101), a first groove (102), a first spring (103) and a limiting block (104), wherein the first groove (102) is formed in the bottom end of the fixing rod (101), and the limiting block (104) is connected to the inside of the first groove (102) through the first spring (103).

4. The pressure reducing valve gas dilution device of claim 3, wherein: the bottom of stopper (104) sets up to the inclined plane structure, stopper (104) are connected with the one end of first spring (103), and the other end of first spring (103) is connected with the inner wall of first recess (102), stopper (104) constitute elastic telescopic structure through first spring (103) and first recess (102).

5. The pressure reducing valve gas dilution device of claim 1, wherein: the inside of fixed block (12) is seted up with fixture block (17) matched with spread groove, fixture block (17) extend to inside the spread groove through second spring (16).

6. The pressure reducing valve gas dilution device of claim 1, wherein: the left end of the screw rod (21) is square, and the outside size of the screw rod (21) is the same as the inside size of the loop bar (18).