CN210440633U - Micro-differential pressure control valve - Google Patents
Micro-differential pressure control valve Download PDFInfo
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- CN210440633U CN210440633U CN201921163341.5U CN201921163341U CN210440633U CN 210440633 U CN210440633 U CN 210440633U CN 201921163341 U CN201921163341 U CN 201921163341U CN 210440633 U CN210440633 U CN 210440633U
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Abstract
The utility model provides a micro-differential pressure control valve, which comprises a valve body, a valve seat, a valve disc, a valve rod, a sealing ring, a spring, a fixing ring, a bearing, a retaining device, an adjusting device and a ventilation net; one end of the valve body is inwards sunken to form a sunken end; the concave surface of the concave end of the valve body is hermetically connected with the side surface of the valve seat, and the middle part of the valve seat is fixedly connected with the valve rod; the center of the ventilation net is arranged on the valve rod and is fastened between the valve seat and the bolt, and the periphery of the ventilation net is arranged on the concave surface of the concave end of the valve body; the position of the retaining device is the limit position of the movement of the valve disc; the center of the valve disc is arranged between the bearing and the valve seat, and the sealing ring is arranged on the valve disc; one end of the spring presses the valve disc and the sealing ring onto the valve body through the bearing; the other end of the spring is used for adjusting the pretightening force of the spring through an adjusting device. The utility model discloses the appearance is pleasing to the eye, and simple structure, quality are lighter, and rationally distributed easily promotes, and the sealing washer appearance is the disc type, guarantees the sealed effect of differential pressure control valve, still has the pressurize function.
Description
Technical Field
The utility model relates to a little differential pressure control valve relates to one kind and possesses and has the pressure differential in two cabins or cabins and the external world to according to the valve that pressure differential control air flow was released.
Background
In ships and other fields, in order to deal with outside polluted air, a positive pressure design is mostly adopted in a cabin. A strand of clean air is introduced into the cabin, the cabin is subjected to airtight treatment, the micro-pressure difference control valve ensures stable positive pressure of the cabin, a pressure gradient is formed among the cabins, and the handling capacity of workers under the condition of outside polluted air is improved.
The air discharge amount of the existing micro differential pressure control valve is greatly influenced by the appearance of the valve body, the valve cannot be flexibly adjusted according to the use requirement, and the discharge amount of the valve is greatly related to a flow channel of the valve body. Users often change different valves according to different use requirements, so that the whole appearance is not attractive, the quality of the currently used valve is heavier, and a new micro-differential pressure control valve needs to be designed according to the defects.
The micro differential pressure control valve is only provided with two kinds of shape scales, the flow channel of the micro differential pressure control valve is large, the pressure difference and flow regulation range is wide, the micro differential pressure control valve can be suitable for various working conditions only by replacing different springs, and the overpressure of the cabin can be stably maintained.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a little differential pressure control valve, be applied to the superpressure in cabins such as naval vessel, fire control, chemical industry, well accuse room to form pressure gradient, guarantee personnel's safety.
The micro-differential pressure control valve is characterized by comprising a valve body, a valve seat, a valve disc, a valve rod, a sealing ring, a spring, a first locking nut, a second locking nut, a fixing ring, a bearing, a retaining device, an adjusting device and a ventilation net;
the valve body is in a round table shape, one end of the valve body is inwards sunken, a flange is outwards arranged at the other end of the valve body, and the flange is provided with a mounting round hole and is fixed on a mounting wall through a bolt and a nut. Rivet holes are formed in the periphery of the sunken end of the valve body and are in rivet connection with the valve seat, and sealing of the valve body and the valve seat is guaranteed.
Preferably, the valve seat is spoke-shaped, and the valve seat is welded on the valve rod, so that the valve body and the valve rod can be fixed, and the weight of the valve seat can be reduced.
The appearance of the ventilation net is disc-shaped, a disc is provided with a hole, the center of the disc is fixed on the valve rod, the periphery of the ventilation net is fixed at one end of the valve body, the center of the ventilation net is fixed on the valve rod, and a hexagon bolt is installed on the valve rod to fix the ventilation net.
Preferably, the ventilation net is in a net shape, and a plurality of small holes are drilled in the disc, so that the whole valve is attractive, air can flow through the ventilation net, and the ventilation net completely acts on the valve disc.
The valve rod penetrates through the centers of the spring, the bearing, the adjusting device, the first locking nut, the second locking nut, the fixing ring and the retaining device to be installed and fixed, and all parts of the valve are assembled. The bearing can move on the valve rod under the action of external force, and the retaining device is the movement limit position of the valve disc and the bearing.
Preferably, the spring is a cylindrical spring made of stainless steel.
Preferably, the center of the valve disc is installed between the bearing and the fixing ring, and a sealing ring is installed on the valve disc.
Preferably, one end of the spring presses the valve disc and the sealing ring onto the valve body through the bearing, so that the tightness is ensured; the other end of the valve is used for adjusting the opening point of the valve by adjusting the pretightening force of the spring through an adjusting device.
Preferably, the micro differential pressure control valve has only two forms of external dimensions, and can meet all different working conditions by replacing the spring
Preferably, the micro differential pressure control valve can realize the air flow discharge according to the differential pressure between the cabins, the adjusting device is twisted, the pretightening force of the spring is adjusted, the different differential pressure adjustment and the air flow discharge between the cabins are realized, and the use requirements of users are met.
Preferably, the micro differential pressure control valve also has a pressure maintaining function, and the adjusting device adjusts the pre-tightening force of the spring to close the valve disc, so that air does not leak from the micro differential pressure control valve.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. under the condition of ensuring stable positive pressure of the cabin and pressure gradient between the cabins, the valve has the advantages of attractive appearance, simple structure and lighter weight.
2. The valve only has two dimensions, the pressure difference and flow regulation range is wide, and the valve can be suitable for various working conditions only by replacing different springs.
3. The appearance of the sealing ring is disc type, and the sealing effect of the micro differential pressure control valve is ensured.
4. The utility model discloses simple structure, rationally distributed easily promotes.
5. The utility model discloses a pretightning force of adjusting device adjusting spring closes the valve disc, makes the air not follow little differential pressure control valve leaks, has the pressurize function.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic diagram of the present invention.
The figures show that:
1-valve body
2-valve seat
3-valve disc
4-sealing ring
5-spring
6-second lock nut
7-valve stem
8-bearing
9-fixed ring
10-retaining device
11-regulating device
12-first lock nut
13-Ventilation Net
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
In this embodiment, the utility model provides a micro-differential pressure control valve, including valve body, valve seat, valve disc, valve rod, sealing washer, spring, first lock nut, second lock nut, solid fixed ring, bearing, stopping device, adjusting device, ventilation net;
the valve body is in a round table shape, one end of the valve body is inwards sunken, a flange is outwards arranged at the other end of the valve body, and the flange is provided with a mounting round hole and is fixed on a mounting wall through a bolt and a nut. Rivet holes are formed in the periphery of the sunken end of the valve body and are in rivet connection with the valve seat, and sealing of the valve body and the valve seat is guaranteed.
The valve seat with the valve rod adopts the welded form fixed, the ventilation net appearance is discoid, and the disc trompil, disc center are fixed on the valve rod, the ventilation net is fixed all around the sunken one end of valve body, and the center is fixed on the valve rod, and the hex bolts is installed on the valve rod to fixed ventilation net.
The valve rod penetrates through the centers of the spring, the bearing, the adjusting device, the first locking nut, the second locking nut, the fixing ring and the retaining device to be installed and fixed, and the position of the retaining device is the movement limit position of the valve disc; the center of the valve disc is arranged between the bearing and the second locking nut, and the sealing ring is arranged on the valve disc.
One end of the spring presses the valve disc and the sealing ring onto the valve body through the bearing to ensure tightness; the other end of the valve is used for adjusting the opening point of the valve by adjusting the pretightening force of the spring through an adjusting device.
The micro differential pressure control valve only has two forms of overall dimensions, and can meet all different working conditions by replacing the spring
The micro differential pressure control valve can realize the discharge of air flow according to the differential pressure between cabins, twists the adjusting device, adjusts the pretightening force of the spring, realizes the adjustment of different differential pressures between cabins and the discharge of air flow, and meets the use requirements of users.
The micro differential pressure control valve also has a pressure maintaining function, and the adjusting device adjusts the pretightening force of the spring and closes the valve disc, so that air does not leak from the micro differential pressure control valve.
When using the utility model provides a differential pressure control valve, as shown in fig. 1, differential pressure control valve comprises parts such as valve body 1, disk seat 2, valve disc 3, sealing washer 4, spring 5, second lock nut 6, first lock nut 12, valve rod 7, bearing 8, solid fixed ring 9, stopping device 10, adjusting device 11, ventilation net 13.
The valve body 1 is fixed on the bulkhead through bolts and nuts, and a sealing ring is arranged between the valve body and the bulkhead for ensuring sealing; the valve seat 2 is fixed on the valve body 1 through a rivet, and the rivet ensures the sealing of the valve body 1 and the valve seat 2; the valve seat 2 and the valve rod 7 are fixed in a welding mode; the spring 5, the bearing 8, the second locking nut 6, the first locking nut 12, the fixing ring 9, the retaining device 10, the adjusting device 11 and the ventilation net 13 are fixed on the valve rod 7; the valve disc 3 is arranged between the bearing 8 and the fixing ring 9, the sealing ring 4 is arranged on the valve disc 3, and the spring 5 presses the valve disc 3 and the sealing ring 4 on the valve seat 2 through the bearing 8.
In the air flow direction as shown in the figure, the air flow acts on the sealing ring 4 and the valve disc 3 through the ventilation net 13 and the valve seat 2, the valve disc 3 and the sealing ring 4 overcome the pretightening force of the spring 5, the bearing 8 is pushed to move towards the air flow direction, a gap is reserved between the sealing ring 4 and the valve seat 2 at the moment, the air is discharged to a low-pressure end, the pretightening force of the spring 5 is adjusted through the rotary adjusting device 11 at the moment, and finally, the stable positive pressure and the pressure gradient are achieved.
The retaining device 10 is the limit position for the displacement of the valve disc 3 and the bearing 8 to the low pressure side, ensuring the stiffness of the spring and determining the maximum overpressure in the chamber.
The adjusting device 11 can adjust the pretightening force of the spring, so that the valve disc 3 and the sealing ring 4 are pressed against the valve seat, and the micro-differential pressure control valve is closed under the condition of overpressure.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A micro-differential pressure control valve is characterized by comprising a valve body, a valve seat, a valve disc, a valve rod, a sealing ring, a spring, a fixing ring, a bearing, a retaining device, an adjusting device and a ventilation net; wherein:
the valve body is in a circular truncated cone shape, and one end of the valve body is inwards sunken to form a sunken end;
the concave surface of the concave end of the valve body is hermetically connected with the side surface of the valve seat, and the middle part of the valve seat is fixedly connected with the valve rod;
the center of the ventilation net is arranged on the valve rod and is fastened between the valve seat and the bolt, and the periphery of the ventilation net is arranged on the concave surface of the concave end of the valve body;
the spring, the bearing, the adjusting device, the fixing ring and the retaining device are mounted and fixed with the valve rod, and the position of the retaining device is the limit position of the movement of the valve disc; the center of the valve disc is arranged between the bearing and the valve seat, and the sealing ring is arranged on the valve disc;
one end of the spring presses the valve disc and the sealing ring onto the valve body through the bearing; the other end of the spring is used for adjusting the pretightening force of the spring through an adjusting device.
2. The micro-differential pressure control valve according to claim 1, wherein the other end of the valve body is outwardly provided with a flange, and the flange is provided with a mounting round hole and is fixed on the mounting wall through a bolt and a nut.
3. The micro-differential pressure control valve as claimed in claim 1, wherein the vent net is shaped like a disk, and the disk is provided with mesh holes.
4. A micro-differential pressure control valve as claimed in claim 1, wherein the valve seat is spoke-shaped.
5. The micro differential pressure control valve as claimed in claim 1, wherein the micro differential pressure control valve has only two types of external dimensions, and can satisfy all different working conditions by replacing the spring.
6. The micro differential pressure control valve as claimed in claim 1, wherein the micro differential pressure control valve is capable of achieving air flow rate relief according to the pressure difference between the compartments, and the adjusting device is capable of adjusting the pre-tightening force of the spring, achieving different pressure difference adjustment between the compartments and air flow rate relief.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163341.5U CN210440633U (en) | 2019-07-23 | 2019-07-23 | Micro-differential pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163341.5U CN210440633U (en) | 2019-07-23 | 2019-07-23 | Micro-differential pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440633U true CN210440633U (en) | 2020-05-01 |
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ID=70406338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921163341.5U Active CN210440633U (en) | 2019-07-23 | 2019-07-23 | Micro-differential pressure control valve |
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| Country | Link |
|---|---|
| CN (1) | CN210440633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901836A (en) * | 2020-12-29 | 2021-06-04 | 成都市建筑设计研究院 | Residual pressure valve adopting movable valve plate and preparation method |
-
2019
- 2019-07-23 CN CN201921163341.5U patent/CN210440633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901836A (en) * | 2020-12-29 | 2021-06-04 | 成都市建筑设计研究院 | Residual pressure valve adopting movable valve plate and preparation method |
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