CN215673788U - Low pressure difference structure pilot-operated type pressure reducing valve - Google Patents
Low pressure difference structure pilot-operated type pressure reducing valve Download PDFInfo
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- CN215673788U CN215673788U CN202122119767.4U CN202122119767U CN215673788U CN 215673788 U CN215673788 U CN 215673788U CN 202122119767 U CN202122119767 U CN 202122119767U CN 215673788 U CN215673788 U CN 215673788U
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- protective shell
- reducing valve
- pneumatic diaphragm
- protective housing
- pressure reducing
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Abstract
The utility model discloses a low-pressure-difference structure pilot-operated type pressure reducing valve which comprises a first protective shell, a first connecting pipeline communicated with the first protective shell, a second protective shell arranged opposite to the first protective shell, a second connecting pipeline communicated with the second protective shell, a valve core arranged between the first protective shell and the second protective shell, breathing holes arranged on the valve core, a pneumatic diaphragm arranged on one side of the valve core, a connecting column arranged between the pneumatic diaphragm and the valve core and an adjusting component arranged on one side of the pneumatic diaphragm. According to the low-pressure-difference structure pilot type pressure reducing valve, the first protective shell and the second protective shell are connected through the clamping structure or the bolt structure, so that workers can conveniently disassemble and assemble the first protective shell and the second protective shell, and the workers can conveniently overhaul the first protective shell and the second protective shell.
Description
Technical Field
The utility model relates to the related technical field of pressure reducing valves, in particular to a pilot type pressure reducing valve with a low pressure difference structure.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by regulation and automatically keeps the outlet pressure stable by the energy of a medium, and from the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with changeable local resistance, namely, the flow rate and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction; then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the adjustment of the control and adjustment system, so that the pressure behind the valve is kept constant within a certain error range;
the pressure reducing valve in the prior art is mostly of a fixed structure due to the design characteristics of the pressure reducing valve, the pressure reducing valve is inconvenient to disassemble and repair, and the pressure relief capacity of the pressure reducing valve is inconvenient to adjust in the actual using process, so that various using requirements of the pressure reducing valve at present cannot be met;
therefore, a pilot type pressure reducing valve with a low pressure difference structure is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-pressure-difference structure pilot type pressure reducing valve, and aims to solve the problems that a pressure reducing valve in the prior art is mostly of a fixed structure due to the design characteristics of the pressure reducing valve, the pressure reducing valve is inconvenient to disassemble and repair, and the pressure relief capacity of the pressure reducing valve is inconvenient to adjust in the actual use process.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a pilot-operated pressure reducing valve with a low pressure difference structure comprises a first protective shell, a first connecting pipeline communicated with the first protective shell, a second protective shell arranged opposite to the first protective shell, a second connecting pipeline communicated with the second protective shell, a valve core arranged between the first protective shell and the second protective shell, breathing holes arranged on the valve core, a pneumatic diaphragm arranged on one side of the valve core, a connecting column arranged between the pneumatic diaphragm and the valve core and an adjusting assembly arranged on one side of the pneumatic diaphragm, wherein the adjusting assembly is used for adjusting the pressure relief capacity.
In a preferred aspect of the present invention, the first protective housing and the second protective housing are connected by a snap structure or a bolt structure, and inner walls of the first protective housing and the second protective housing are configured as smooth arc surfaces.
Through adopting above-mentioned technical scheme, and then be convenient for the staff to carry out the dismouting to first protective housing and second protective housing to the staff of being convenient for overhauls first protective housing and second protective housing.
As a preferred aspect of the present invention, the adjusting assembly includes a gasket disposed on one side of the pneumatic diaphragm, a telescopic spring disposed on one side of the gasket, and a sealing end cover connected to the second connecting pipe, one end of the telescopic spring is disposed against the gasket, and the other end of the telescopic spring is disposed against an inner side of the sealing end cover.
Through adopting above-mentioned technical scheme, and then be convenient for carry on spacingly through end cover and packing ring to expanding spring's both ends.
In a preferred aspect of the present invention, the end cap is connected to the second connecting pipe by a screw structure, the outer circumference of the end cap is provided with an external screw thread, and the inner wall of the second connecting pipe is provided with an internal screw thread.
Through adopting above-mentioned technical scheme, and then be convenient for adjust for the mounted position of second connecting tube through end cover.
In a preferred aspect of the present invention, an adjusting opening is provided on an outer side of the end cap, and the adjusting opening is provided to be semi-penetrating.
Through adopting above-mentioned technical scheme to be convenient for the staff adjusts the end cover through adjusting the mouth.
In a preferred aspect of the present invention, the pneumatic diaphragm is provided with an adjusting hole adapted to the connecting column, and an inner wall of the adjusting hole is provided with a smooth arc surface.
By adopting the technical scheme, the connecting column is connected with the valve core conveniently through the adjusting hole.
Compared with the prior art, the utility model has the beneficial effects that: the pilot-operated pressure reducing valve with the low pressure difference structure has the characteristics of reasonable design and simplicity in operation
(1) Because be connected through block structure or bolt structure between first protective housing and the second protective housing, and then be convenient for the staff carries out the dismouting to first protective housing and second protective housing to the staff of being convenient for overhauls first protective housing and second protective housing.
(2) In addition, be convenient for adjust pneumatic diaphragm through the pressure release subassembly to the breather hole on the pneumatic diaphragm of being convenient for is adjusted the case.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an exploded view of the overall structure of a low pressure difference structure pilot operated relief valve according to the present invention;
FIG. 2 is a schematic structural diagram of the overall structure of a low pressure difference structure pilot-operated pressure reducing valve according to the present invention;
FIG. 3 is a schematic illustration of the front view of FIG. 2 in a low pressure differential configuration pilot operated pressure relief valve in accordance with the present invention;
FIG. 4 is a schematic view of the pilot operated pressure reducing valve of the low pressure differential configuration of the present invention at A of FIG. 3;
fig. 5 is a schematic structural view of a low-pressure-difference structure pilot-operated pressure reducing valve of the present invention in use.
In the figure: 11-a first protective shell, 111-a first connecting pipeline, 12-a second protective shell, 121-a second connecting pipeline, 3-a pneumatic diaphragm, 4-a gasket, 5-a telescopic spring, 6-a sealing end cover, 61-an adjusting port and 7-a connecting column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: a pilot-operated pressure reducing valve with a low pressure difference structure comprises a first protective shell 11, a first connecting pipeline 111 communicated with the first protective shell 11, a second protective shell 12 arranged opposite to the first protective shell 11, a second connecting pipeline 121 communicated with the second protective shell 12, a valve core 2 arranged between the first protective shell 11 and the second protective shell 12, breathing holes arranged on the valve core 2, a pneumatic diaphragm 3 arranged on one side of the valve core 2, a connecting column 7 arranged between the pneumatic diaphragm 3 and the valve core 2 and an adjusting component arranged on one side of the pneumatic diaphragm 3, wherein the adjusting component is used for adjusting the pressure relief capacity, and in the utility model, the first protective shell 11 and the second protective shell 12 are connected through a clamping structure or a bolt structure, so that a worker can conveniently disassemble and assemble the first protective shell 11 and the second protective shell 12, thereby the staff of being convenient for overhauls first protective housing 11 and second protective housing 12, in addition, is convenient for adjust pneumatic diaphragm 3 through the pressure release subassembly to the breathing hole of pneumatic diaphragm 3 on to case 2 is adjusted to being convenient for.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the first protective housing 11 and the second protective housing 12 are connected by a fastening structure or a bolt structure, and inner walls of the first protective housing 11 and the second protective housing 12 are set to be smooth arc surfaces, so that the first protective housing 11 and the second protective housing 12 can be conveniently disassembled and assembled by a worker, and the first protective housing 11 and the second protective housing 12 can be conveniently overhauled by the worker.
Referring to fig. 1, 2, 3 and 4, the adjusting assembly includes a gasket 4 disposed on one side of the pneumatic diaphragm 3, a telescopic spring 5 disposed on one side of the gasket 4, and a sealing end cap 6 connected to the second connecting pipe 121, one end of the telescopic spring 5 abuts against the gasket 4, and the other end of the telescopic spring 5 abuts against the inner side of the sealing end cap 6, so that the two ends of the telescopic spring 5 are conveniently limited by the sealing end cap 6 and the gasket 4.
Referring to fig. 1, 2, 3 and 4, the sealing end cover 6 is connected to the second connecting pipe 121 through a threaded structure, the outer periphery of the sealing end cover 6 is provided with external threads, and the inner wall of the second connecting pipe 121 is provided with internal threads, so that the installation position of the sealing end cover 6 relative to the second connecting pipe 121 can be conveniently adjusted, and the pressure of the expansion spring 5 on the pneumatic diaphragm 3 can be conveniently adjusted.
Referring to fig. 1, 2, 3 and 4, in order to facilitate the adjustment of the end cap 6, an adjustment opening 61 is provided at an outer side of the end cap 6, and the adjustment opening 61 is semi-penetrating, so that a worker can adjust the end cap 6 through the adjustment opening 61.
Referring to fig. 1, 2, 3 and 4, the pneumatic diaphragm 3 is provided with an adjusting hole matched with the connecting column 7, and the inner wall of the adjusting hole is a smooth arc surface, so that the connecting column 7 is conveniently connected with the valve core 2 through the adjusting hole.
The working principle is as follows: when the pneumatic diaphragm valve is used, the first connecting pipeline 111 is communicated with the air outlet end of external equipment, when the external equipment is used for discharging air, the air of the external equipment enters one end of the opposite valve core 2, the air acts on the pneumatic diaphragm 3 through the breathing hole, and the deformation force of the pneumatic diaphragm 3 is adjusted through the pressure of the telescopic spring 5 on the pneumatic diaphragm 3 due to the effect of the telescopic spring 5, so that the throttling area of the valve core 2 is conveniently adjusted; on the contrary, when the throttling area needs to be reduced, the sealing end cover 6 is installed in the direction opposite to the pneumatic diaphragm 3, so that the pressure of the expansion spring 5 on the pneumatic diaphragm 3 is increased, the deformation force of the pneumatic diaphragm 3 is reduced, the distance between the pneumatic diaphragm 3 and the valve core 2 is increased, and the throttling area is reduced.
The device that obtains through above-mentioned design has satisfied basically and improves relief pressure valve among the prior art because the design characteristics of itself, mostly is fixed structure, is not convenient for tear open the relief pressure valve and repaiies, and in actual use, is not convenient for the use of the problem that the pressure relieving capacity of relief pressure valve adjusted, but at the purpose of further perfecting its function, the designer has carried out further improvement to the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The pilot type pressure reducing valve with the low pressure difference structure is characterized in that: including first protective housing (11), with first connecting tube (111) that first protective housing (11) are linked together, with second protective housing (12) that first protective housing (11) set up relatively, with second connecting tube (121) that second protective housing (12) are linked together, set up and be in case, all with setting between first protective housing (11) and second protective housing (12) are in breather hole, setting on the case are in pneumatic diaphragm (3) of case one side, setting are in spliced pole (7) between pneumatic diaphragm (3) and the case and setting are in the adjusting part of pneumatic diaphragm (3) one side, the adjusting part is used for adjusting pressure release capacity.
2. The low pressure difference structure pilot-operated pressure reducing valve according to claim 1, wherein the first protective casing (11) and the second protective casing (12) are connected through a clamping structure or a bolt structure, and inner walls of the first protective casing (11) and the second protective casing (12) are provided with smooth arc surfaces.
3. The low-pressure-difference structure pilot-operated pressure reducing valve according to claim 2, characterized in that the adjusting assembly comprises a gasket (4) arranged on one side of the pneumatic diaphragm (3), a telescopic spring (5) arranged on one side of the gasket (4) and a seal end cap (6) connected with the second connecting pipe (121), one end of the telescopic spring (5) is arranged against the gasket (4), and the other end of the telescopic spring (5) is arranged against the inner side of the seal end cap (6).
4. The low pressure difference structure pilot-operated type pressure reducing valve according to claim 3, wherein the end cap (6) is connected with the second connecting pipe (121) through a thread structure, the outer circumference of the end cap (6) is provided with an external thread, and the inner wall of the second connecting pipe (121) is provided with an internal thread.
5. The low pressure difference structure pilot operated relief valve according to claim 4, characterized in that the outside of the end cap (6) is provided with an adjustment port (61), and the adjustment port (61) is provided semi-penetratively.
6. The low-pressure-difference structure pilot-operated pressure reducing valve according to claim 5, characterized in that the pneumatic diaphragm (3) is provided with an adjusting hole matched with the connecting column (7), and the inner wall of the adjusting hole is provided with a smooth arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119767.4U CN215673788U (en) | 2021-09-03 | 2021-09-03 | Low pressure difference structure pilot-operated type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119767.4U CN215673788U (en) | 2021-09-03 | 2021-09-03 | Low pressure difference structure pilot-operated type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215673788U true CN215673788U (en) | 2022-01-28 |
Family
ID=79960880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122119767.4U Active CN215673788U (en) | 2021-09-03 | 2021-09-03 | Low pressure difference structure pilot-operated type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215673788U (en) |
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2021
- 2021-09-03 CN CN202122119767.4U patent/CN215673788U/en active Active
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