CN218863584U - Low pressure is diffusing device for gas - Google Patents

Abstract

The utility model discloses a diffusing device for low-pressure gas, which comprises a diffusing cylinder, a knob, a valve rod and a spring; the lower end of the diffusing cylinder is arranged on a diffusing port of a gas pipeline, an exhaust port is arranged in the middle of the diffusing cylinder, and an opening is formed in the upper end of the diffusing cylinder; a valve port is arranged at the lower end of the diffusing cylinder or the diffusing port; the knob is connected with the upper end of the valve rod, and the lower end of the valve rod penetrates through the opening and extends downwards; the lower end of the valve rod is provided with a first sealing sheet, and the middle part of the valve rod is provided with a second sealing sheet; the spring is arranged between the knob and the diffusing cylinder, the upper end of the spring acts on the lower end of the knob, and the lower end of the spring acts on the upper end of the diffusing cylinder; and a buckling structure is arranged between the knob and the diffusing cylinder. The diffusing device is simple in structure, convenient and safe to use, small in influence on gas utilization units, capable of performing deflation maintenance under the condition of normal gas utilization, free of gas stop and easy to operate.

Description

Low pressure is diffusing device for gas

Technical Field

The utility model relates to a diffuse technical field, concretely relates to low pressure gas is with diffusing device.

Background

During the construction of the gas pipeline, a dispersion port is generally arranged at the tail end of the pipeline, so that the pressure measurement is convenient during the construction, and the dispersion port is used for discharging air or gas in the pipeline. After the pipeline is qualified by inspection and ventilated, a diffusing port of the gas pipeline is generally directly plugged by a pipe cap or a plug, so that air leakage during normal ventilation is avoided. However, when a gas pipeline fails in use or is periodically overhauled, a pressure measuring device (such as a water column meter and a pressure gauge) is used for testing and troubleshooting the gas pipeline after a pipe cap or a plug at a discharge port is removed, the removing process is complicated and unsafe, mixed gas discharged in the removing process is easy to catch fire or even explode accidentally, and normal production and life of a gas unit can be influenced; in addition, the working conditions of the gas pipeline installation place are severe (such as high temperature, oil smoke and the like), the process of removing the plug and installing the plug is long, and the overhauling efficiency is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that above-mentioned exists, provide a low pressure gas is with diffusing device, should diffuse device simple structure, convenient to use, safety, and little to the influence with the gas unit, can deflate under the condition of normal gas use and overhaul, need not to stop gas, the easy operation.

The purpose of the utility model is realized through the following technical scheme:

a diffusing device for low-pressure gas comprises a diffusing cylinder, a knob, a valve rod and a spring; the lower end of the diffusing cylinder is arranged on a diffusing port of a gas pipeline, the middle of the diffusing cylinder is provided with an exhaust port, and the upper end of the diffusing cylinder is provided with an opening; a valve port is arranged at the lower end of the diffusing cylinder or the diffusing port; the knob is connected with the upper end of the valve rod, and the lower end of the valve rod penetrates through the opening and extends downwards; the lower end of the valve rod is provided with a first sealing sheet for closing or opening the valve port, and the middle part of the valve rod is provided with a second sealing sheet for closing or opening the opening; the spring is arranged between the knob and the diffusing barrel, the upper end of the spring acts on the lower end of the knob, and the lower end of the spring acts on the upper end of the diffusing barrel; a buckling structure is arranged between the knob and the diffusing cylinder; when the knob is buckled with the diffusing cylinder through the buckling structure, the spring is in a compressed state, the first sealing sheet is abutted against the valve port, and the second sealing sheet is separated from the opening; when the knob is separated from the diffusing cylinder, the elastic force of the spring urges the second sealing sheet to be tightly abutted against the opening, and the first sealing sheet is separated from the valve port.

The working principle of the low-pressure gas diffusing device is as follows:

when the gas is normally used, the knob and the diffusing cylinder are in a buckling state, at the moment, the spring is in a compression state, the first sealing sheet is tightly abutted against the valve port, the valve port is in a closing state, and the gas on the gas pipeline cannot be discharged from the diffusing device; when a gas pipeline breaks down or is periodically overhauled in the using process, the fastening structure is loosened, the knob is separated from the diffusing cylinder under the action of the elastic force of the spring, when the knob is separated, the elastic force of the spring pushes the knob to move upwards to drive the valve rod to move upwards as well, the first sealing sheet and the second sealing sheet are driven to move upwards, the second sealing sheet can be abutted against the opening to close the opening, the second sealing sheet is separated from the valve port, after separation, gas on the gas pipeline flows out of the diffusing port, enters the diffusing cylinder through the valve port and is discharged from the exhaust port, and the gas pipeline can be exhausted or can be tested for troubleshooting of the gas pipeline; when the valve port needs to be closed, the elastic force of the spring is overcome, the knob is pressed downwards to drive the valve rod to move downwards, the first sealing piece and the second sealing piece are driven to move downwards, the first sealing piece is abutted to the position of the valve port, the second sealing piece is separated from the opening, and then the knob is buckled with the diffusing cylinder, so that the valve port is closed.

The utility model discloses a preferred scheme, wherein, the lock structure is in including setting up the lock piece and the setting in the knob both sides a diffusion section of thick bamboo upper end and the lock groove of being connected with every lock piece is mutually supported. By the structure, when the valve port needs to be closed, the knob is operated and the elasticity of the spring is overcome, so that the buckling block on the knob is buckled into the buckling groove, the knob moves downwards in the buckling process and drives the valve rod to move downwards to drive the first sealing sheet and the second sealing sheet to move, and the first sealing sheet is abutted against the valve port to close the valve port; the second sealing sheet is separated from the opening, so that the opening is in an open state.

Preferentially, the buckling grooves comprise vertical open grooves and transverse buckling grooves, and the vertical open grooves are communicated with the transverse buckling grooves. In the structure, when the valve port needs to be closed, the elastic force of the spring is overcome, the knob is pressed downwards, the valve rod is driven to move downwards, the first sealing sheet and the second sealing sheet are driven to move, the first sealing sheet can be abutted against the valve port, the buckling block on the knob falls into the vertical open slot at the moment, then the knob is rotated, the buckling block rotates to enter the transverse buckling slot, and the knob is buckled and fixed, so that the valve port is continuously closed; when the valve port needs to be opened, the knob is rotated reversely, the buckling block is separated from the transverse buckling groove and enters the vertical opening groove, rebounding is carried out under the elastic force action of the spring, the valve rod, the first sealing piece and the second sealing piece are driven to move upwards, the opening of the valve is realized, and the opening is closed.

Furthermore, the upper end of the transverse buckling groove is provided with a limiting part, and the limiting part and the diffusing cylinder are integrally arranged. Through setting up spacing portion, when the buckling piece got into horizontal lock-in groove, spacing portion can prevent that the buckling piece from breaking away from horizontal lock-in groove, plays spacing effect in ascending orientation.

Preferably, the lower end of the diffusing cylinder is connected with the diffusing port of the gas pipeline through threads. In the structure, through threaded connection, the installation and the disassembly of the diffusing cylinder can be facilitated, the maintenance is convenient, the operation difficulty of maintainers is favorably reduced, and the maintenance efficiency is improved.

Preferably, the valve port is a stepped hole; the diameter of the stepped hole is smaller than that of the first sealing sheet. Its aim at sets up the shoulder hole, and the diameter of shoulder hole is less than the diameter of first gasket, can be so that the better top of tightly at the shoulder hole of supporting of first gasket, close the shoulder hole.

Preferably, the spring is sleeved on the valve rod. Its aim at for the structure becomes compacter, simultaneously, also makes the knob atress more even.

Preferably, the opening is provided with a supporting step, the upper end and the lower end of the supporting step are both provided with annular bulges, and the inner diameter of the supporting step is smaller than that of the annular bulges; the space between the valve rod and the annular bulge at the upper end forms a mounting groove for mounting the spring, and the lower end of the spring acts on the upper end of the supporting step; when the opening is closed, the second sealing sheet is abutted against the annular bulge at the lower end. In the structure, the supporting steps and the mounting grooves are arranged, so that the spring can be conveniently mounted, and the structure becomes more compact.

Preferably, the inner diameter of the annular protrusion is smaller than the diameter of the second sealing sheet. When the knob is separated from the diffusing cylinder, the elastic force of the spring enables the second sealing sheet to be tightly abutted against the annular bulge at the lower end, so that the opening is closed.

Preferably, the lower extreme of knob is equipped with dodges the hole, dodge the hole upper end and be equipped with the screw hole, the upper end of valve rod with the screw hole cooperation is connected. In the structure, on one hand, the avoidance hole is formed, so that when the knob is buckled with the diffusing cylinder, the annular bulge at the upper end extends into the avoidance groove, the whole structure becomes very compact, and the spring is ensured not to be exposed outside; on the other hand, through setting up the screw hole, made things convenient for knob and valve rod installation and dismantlement.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model provides a low pressure is diffusing device for gas, when the gas pipeline breaks down or regularly overhauls in the use, through loosening the lock structure, under the spring force effect of spring, knob and diffusing section of thick bamboo separation, during the separation, the elasticity of spring promotes the knob upward movement, drive the valve rod upward movement also, drive first gasket and second gasket upward movement, the second gasket can support tightly at the opening part, close the opening, second gasket and valve port separation, after the separation, gas on the gas pipeline comes out from diffusing the mouth, get into diffusing section of thick bamboo inside after the valve port, then discharge from the gas vent; when the valve port needs to be closed, the knob is operated, the elastic force of the spring is overcome, the knob and the diffusing cylinder are buckled, the operation process is very simple and convenient, and the overhauling efficiency is greatly improved.

2. The utility model provides a low pressure is diffusing device for gas through set up valve port and gas vent on diffusing the pipe, and operation lock structure can realize that the valve port is opened at once, through exhausting or overhauing in the discharge port, compares among the prior art, demolishs the end cap process and can slowly bleed, and the security is low, the utility model provides a diffusing device through discharging at the gas vent, can realize safe gassing and maintenance, and little to the influence with the gas unit, can deflate under the condition of normal gas and overhaul, need not to stop the gas, easy operation.

3. The utility model provides a low pressure is diffusing device for gas, simple structure, it is small, and diffusing device is mechanical structure, need not external power supply, be convenient for maintain the maintenance.

Drawings

Fig. 1-2 are schematic structural views of one embodiment of the diffusing device for low-pressure gas in the present invention, wherein fig. 1 is an internal structural view of the valve port in the diffusing device in a closed state, and fig. 2 is an internal structural view of the valve port in the diffusing device in an open state.

Fig. 3 is a partial structural diagram of fig. 1.

Fig. 4 is a partially enlarged view of a portion a in fig. 2.

Fig. 5-6 are schematic views of the three-dimensional structure of the diffusing cylinder in different viewing directions.

Fig. 7 is a top view of the knob according to the present invention.

Fig. 8 is a schematic structural diagram of another embodiment of the diffusing device of the present invention.

Detailed Description

In order to make those skilled in the art understand the technical solution of the present invention well, the present invention will be further described below with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1-4, the embodiment discloses a diffusing device for low-pressure gas, which comprises a diffusing cylinder 1, a knob 2, a valve rod 3 and a spring 4; the lower end of the diffusing cylinder 1 is arranged on a diffusing port 6 of a gas pipeline 5, the middle of the diffusing cylinder 1 is provided with an exhaust port 7, and the upper end of the diffusing cylinder 1 is provided with an opening 8; the lower end of the diffusing cylinder 1 is provided with a valve port 9; the knob 2 is connected with the upper end of the valve rod 3, and the lower end of the valve rod 3 passes through the opening 8 and extends downwards; the lower end of the valve rod 3 is provided with a first sealing sheet 10 for closing or opening the valve port 9, and the middle part of the valve rod 3 is provided with a second sealing sheet 11 for closing or opening the opening 8; the spring 4 is arranged between the knob 2 and the diffusing barrel 1, the upper end of the spring 4 acts on the lower end of the knob 2, and the lower end of the spring 4 acts on the upper end of the diffusing barrel 1; a buckling structure 12 is arranged between the knob 2 and the diffusing cylinder 1; when the knob 2 is buckled with the diffusing cylinder 1 through the buckling structure 12, the spring 4 is in a compressed state, the first sealing sheet 10 abuts against the valve port 9, and the second sealing sheet 11 is separated from the opening 8; when the knob 2 is separated from the diffusing cylinder 1, the elastic force of the spring 4 urges the second sealing sheet 11 to be tightly pressed on the opening 8, and the first sealing sheet 10 is separated from the valve port 9; when the valve port 9 needs to be closed, the knob 2 is operated, and the elastic force of the spring 4 is overcome, so that the knob 2 is buckled with the diffusion cylinder 1.

The gas pipeline 5 is used for conveying low-pressure gas, wherein the diffusion cylinder 1 is coaxially arranged with the opening 8, the valve port 9, the valve rod 3, the first sealing piece 10 and the second sealing piece 11.

Referring to fig. 1 to 7, the fastening structure 12 includes fastening blocks 12-1 disposed on both sides of the knob 2, and fastening grooves 12-2 disposed on the upper end of the diffuser 1 and cooperatively connected with each fastening block 12-1. By the structure, when the valve port 9 needs to be closed, the knob 2 is operated, the elastic force of the spring 4 is overcome, so that the buckling block 12-1 on the knob 2 is buckled into the buckling groove 12-2, in the buckling process, the knob 2 moves downwards and drives the valve rod 3 to move downwards to drive the first sealing piece 10 and the second sealing piece 11 to move, the first sealing piece 10 is abutted against the valve port 9, and the valve port 9 is closed; the second sealing fin 11 is separated from the opening 8 so that the opening 8 is in an opened state.

Further, the fastening block 12-1 is a fan-shaped fastening block, which aims to make the structure more compact when fastened.

Referring to fig. 1-7, the fastening grooves 12-2 include vertical open grooves 12-21 and horizontal snap-in grooves 12-22, and the vertical open grooves 12-21 and the horizontal snap-in grooves 12-22 are communicated with each other. In the structure, when the valve port 9 needs to be closed, the elastic force of the spring 4 is overcome, the knob 2 is pressed downwards, the valve rod 3 is driven to move downwards, the first sealing piece 10 and the second sealing piece 11 are driven to move, the first sealing piece 10 can be abutted against the valve port 9, the buckling block 12-1 on the knob 2 falls into the vertical opening groove 12-21 at the moment, then the knob 2 is rotated, the buckling block 12-1 rotates to enter the transverse buckling groove 12-22, the knob 2 is buckled and fixed, and the valve port 9 is continuously closed; when the valve port 9 needs to be opened, the knob 2 is rotated reversely, the buckling block 12-1 is separated from the transverse buckling groove 12-22 and enters the vertical opening groove 12-21, and rebounds under the elastic force action of the spring 4 to drive the valve rod 3, the first sealing piece 10 and the second sealing piece 11 to move upwards, so that the opening of the valve and the closing of the opening 8 are realized.

Referring to fig. 4-6, the upper end of the transverse buckling groove 12-22 is provided with a limiting part 12-3, and the limiting part 12-3 is integrally arranged with the diffusing cylinder 1. By arranging the limiting part 12-3, when the buckling block 12-1 enters the transverse buckling groove 12-22, the limiting part 12-3 can prevent the buckling block 12-1 from being separated from the transverse buckling groove 12-22, and plays a role in limiting in the upward direction.

Referring to fig. 1-3, the lower end of the diffusing cylinder 1 is connected with the diffusing port 6 of the gas pipeline 5 through a thread. In the structure, through threaded connection, the installation and the disassembly of the diffusing cylinder 1 can be facilitated, the maintenance is convenient, the operation difficulty of maintainers is favorably reduced, and the maintenance efficiency is improved.

Referring to fig. 1-3, the valve port 9 is a stepped hole; the diameter of the stepped hole is smaller than the diameter of the first sealing piece 10. Its aim at sets up the shoulder hole, and the diameter of shoulder hole is less than the diameter of first gasket 10, can be so that the better top of tightly at the shoulder hole of supporting of first gasket 10, close the shoulder hole.

Referring to fig. 1 to 4, the spring 4 is fitted over the valve stem 3. The purpose of this is to make the structure more compact and, at the same time, to make the knob 2 more evenly stressed.

Referring to fig. 1 to 6, a support step 14 is arranged on the opening 8, annular protrusions 13 are arranged at the upper end and the lower end of the support step 14, and the inner diameter of the support step 14 is smaller than that of the annular protrusions 13; the space between the valve stem 3 and the annular projection 13 at the upper end constitutes an installation groove 14 for installing the spring 4, and the lower end of the spring 4 acts on the upper end of the support step 14; when the opening 8 is closed, the second sealing sheet 11 abuts against the annular bulge 13 at the lower end. In the above structure, the installation of the spring 4 is facilitated by providing the supporting step 14 and the installation groove 14, so that the structure becomes more compact.

Referring to fig. 1 to 6, the inner diameter of the annular protrusion 13 is smaller than the diameter of the second sealing piece 11. The purpose is that when the knob 2 is separated from the diffusing cylinder 1, the elastic force of the spring 4 urges the second sealing sheet 11 to be tightly pressed against the annular bulge 13 at the lower end to close the opening 8.

Referring to fig. 1-6, the diameters of the first sealing sheet 10 and the second sealing sheet 11 are smaller than the inner diameter of the diffusing cylinder 1; an exhaust pipe 16 is arranged on the diffusing cylinder 1, and the exhaust port 7 is arranged on the exhaust pipe 16.

The first sealing piece 10 and the second sealing piece 11 are made of rubber, and the first sealing piece 10 and the second sealing piece 11 are fixedly connected to the valve rod 3.

Referring to fig. 1-4 and 7, the lower end of the knob 2 is provided with an avoiding hole 17, the upper end of the avoiding hole 17 is provided with a threaded hole 18, and the upper end of the valve rod 3 is connected with the threaded hole 18 in a matching manner. In the structure, on one hand, the avoidance hole 17 is arranged, so that when the knob 2 is buckled with the diffusing cylinder 1, the annular bulge 13 at the upper end extends into the avoidance groove, the whole structure is very compact, and the spring 4 is ensured not to be exposed outside; on the other hand, through setting up screw hole 18, made things convenient for knob 2 and valve rod 3 installation and dismantlement.

Referring to fig. 1-4 and 7, the upper end of the diffusing cylinder 1 is provided with an annular groove 19 coaxially arranged with the diffusing cylinder, and the inner side wall of the annular groove 19 forms the outer side wall of the annular protrusion 13 at the upper end; when the knob 2 is engaged with the diffusion cylinder 1, the lower end of the knob 2 extends into the annular groove 19, so that the whole structure becomes very compact.

Referring to fig. 1-4, the valve rod 3 and the supporting step 14 are in clearance fit, so that the movement of the valve rod 3 is facilitated, and since the opening 8 is closed when the valve port 9 is opened, the fuel gas does not leak out from the clearance between the valve rod 3 and the supporting step 14.

Referring to fig. 1 to 4, the working principle of the low-pressure gas diffusing device is as follows:

when the gas is in normal use, the knob 2 and the diffusing cylinder 1 are in a buckling state, at the moment, the spring 4 is in a compression state, the first sealing sheet 10 is tightly abutted against the valve port 9, the valve port 9 is in a closing state, and the gas on the gas pipeline 5 cannot be discharged from the diffusing device; when the gas pipeline 5 breaks down or is periodically overhauled in the using process, the fastening structure 12 is loosened, the knob 2 is separated from the diffusing cylinder 1 under the action of the elastic force of the spring 4, when the knob 2 is separated, the elastic force of the spring 4 pushes the knob 2 to move upwards to drive the valve rod 3 to move upwards as well, the first sealing sheet 10 and the second sealing sheet 11 are driven to move upwards, the second sealing sheet 11 can be abutted against the opening 8 to close the opening 8, the second sealing sheet 11 is separated from the valve port 9, after separation, gas on the gas pipeline 5 flows out of the diffusing port 6, enters the diffusing cylinder 1 through the valve port 9 and is discharged from the exhaust port 7, the gas pipeline 5 can be exhausted or the gas pipeline 5 can be tested and checked for faults, the first sealing sheet 10 closes the opening 8, and the gas can be prevented from leaking out of the opening 8; when the valve port 9 needs to be closed, the elastic force of the spring 4 is overcome, the knob 2 is pressed downwards, the valve rod 3 is driven to move downwards, the first sealing sheet 10 and the second sealing sheet 11 are driven to move downwards, the first sealing sheet 10 is abutted against the valve port 9, the second sealing sheet 11 is separated from the opening 8, then the knob 2 is buckled with the diffusing cylinder 1, and the closing of the valve port 9 is realized.

Example 2

Referring to fig. 8, the other structure in this embodiment is the same as that in embodiment 1 except that the valve port 9 is provided on the discharge port 6. In the above structure, the valve port 9 is disposed on the diffusing port 6, and the valve port 9 can be opened and closed as well, and in addition, the structure of the diffusing pipe can be made simpler.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims (10)

1. The diffusing device for the low-pressure gas is characterized by comprising a diffusing cylinder, a knob, a valve rod and a spring; the lower end of the diffusing cylinder is arranged on a diffusing port of a gas pipeline, the middle of the diffusing cylinder is provided with an exhaust port, and the upper end of the diffusing cylinder is provided with an opening; a valve port is arranged at the lower end of the diffusing cylinder or the diffusing port; the knob is connected with the upper end of the valve rod, and the lower end of the valve rod penetrates through the opening and extends downwards; the lower end of the valve rod is provided with a first sealing sheet for closing or opening the valve port, and the middle part of the valve rod is provided with a second sealing sheet for closing or opening the opening; the spring is arranged between the knob and the diffusing cylinder, the upper end of the spring acts on the lower end of the knob, and the lower end of the spring acts on the upper end of the diffusing cylinder; a buckling structure is arranged between the knob and the diffusing cylinder; when the knob is buckled with the diffusing barrel through the buckling structure, the spring is in a compressed state, the first sealing sheet is abutted against the valve port, and the second sealing sheet is separated from the opening; when the knob is separated from the diffusing cylinder, the elastic force of the spring urges the second sealing sheet to be tightly abutted against the opening, and the first sealing sheet is separated from the valve port.

2. The bleeding device for low-pressure gas as claimed in claim 1, wherein the fastening structure comprises fastening blocks disposed on both sides of the knob and fastening grooves disposed on the upper end of the bleeding barrel and connected to each fastening block.

3. The diffusing device for low-pressure gas as claimed in claim 2, wherein the fastening groove comprises a vertical opening groove and a horizontal fastening groove, and the vertical opening groove and the horizontal fastening groove are communicated with each other.

4. The bleeding device for low-pressure gas as defined in claim 3, wherein a stopper is provided at an upper end of said transverse snap-in groove, said stopper being integrally provided with said bleeding cartridge.

5. The bleeding device for low-pressure gas as defined in claim 1, wherein the lower end of said bleeding cylinder is screwed to the bleeding opening of said gas pipe.

6. The bleeding device for low-pressure gas as claimed in claim 1, wherein the valve port is a stepped hole; the diameter of the stepped hole is smaller than that of the first sealing sheet.

7. The bleeding device for low-pressure gas as claimed in claim 1, wherein said spring is fitted over said valve stem.

8. The bleeding device for low-pressure gas as claimed in claim 7, wherein a support step is provided on the opening, annular protrusions are provided at both upper and lower ends of the support step, and the inner diameter of the support step is smaller than that of the annular protrusions; the space between the valve rod and the annular bulge at the upper end forms a mounting groove for mounting the spring, and the lower end of the spring acts on the upper end of the supporting step; when the opening is closed, the second sealing sheet is abutted against the annular bulge at the lower end.

9. The bleeding device for low-pressure gas as set forth in claim 8, wherein the inner diameter of said annular projection is smaller than the diameter of said second sealing piece.

10. The diffusing device for low-pressure gas as claimed in claim 1, wherein the lower end of the knob is provided with an avoiding hole, the upper end of the avoiding hole is provided with a threaded hole, and the upper end of the valve rod is connected with the threaded hole in a matching manner.

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