CN220706515U - PTV-EPS evaporating pressure regulating valve - Google Patents
PTV-EPS evaporating pressure regulating valve Download PDFInfo
- Publication number
- CN220706515U CN220706515U CN202322242999.8U CN202322242999U CN220706515U CN 220706515 U CN220706515 U CN 220706515U CN 202322242999 U CN202322242999 U CN 202322242999U CN 220706515 U CN220706515 U CN 220706515U
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- valve
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- body mechanism
- spring
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 29
- 238000001704 evaporation Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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- Temperature-Responsive Valves (AREA)
Abstract
The utility model discloses a PTV-EPS evaporation pressure regulating valve, which comprises a valve body mechanism, wherein the inner wall of the valve body mechanism is in threaded connection with a valve port bushing, the inner wall of the top of the valve body mechanism is in threaded connection with a regulating screw A, the top wall of the regulating screw A is connected with a regulating spring, the bottom of the regulating spring is fixedly connected with a regulating seat, the bottom of the regulating seat is in threaded connection with a spring seat, the inner wall of the valve body mechanism is provided with a diaphragm and a transmission block, the inner wall of the valve body mechanism is provided with a compression nut and an O-shaped sealing rubber ring, the inner wall of the valve body mechanism is movably provided with a valve needle, and the inner wall of the bottom of the valve needle is fixedly connected with an elastic component. The regulating valve is directly arranged at the inlet end of the evaporator, the valve port tends to be the largest when the back pressure is high and high pressure, the reaction is quick and the control is accurate, no external attachment piece exists, and the operation of a user system host under a long-term safe working condition can be improved.
Description
Technical Field
The utility model relates to the technical field of regulating valves, in particular to a PTV-EPS evaporation pressure regulating valve.
Background
The PTV-EPS evaporating pressure regulating valve is one of energy regulating valves and is an adjustable valve which is connected to the front end of the evaporator and maintains the evaporating pressure to be stable, and the adjustable evaporating pressure regulating valve maintains the evaporating pressure and ensures the surface temperature of the evaporator to be constant. The control of the regulator is adjustable, by throttle control in the suction line, to match the refrigerant flow to the load on the evaporator.
In the refrigerating system under the working conditions of continuous, large-flow and long-time heat exchange, the pressure stabilizing requirement of the evaporator in a given range can be met. Such as in a cold dryer.
The existing products are mainly back pressure control, when the back pressure is large, the valve port is close, when the back pressure is small, the valve port is open, just opposite to the demand of the evaporator, the valve port cannot be directly connected to the front end of the evaporator to control the pressure in the evaporator, only the rear end of the evaporator can be connected to the system in a bypass mode, the valve port is controlled by the outlet pressure of the evaporator, the valve port indirectly enters the evaporator through the bypass quantity, influence factors are more, the control deviation of the pressure in the evaporator is large, and the reaction is slow.
Disclosure of Invention
The present utility model aims to provide a PTV-EPS evaporating pressure regulating valve to solve the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: PTV-EPS evaporating pressure governing valve, including valve body mechanism, valve body mechanism's inner wall threaded connection has valve port bush, valve body mechanism's top's inner wall threaded connection has adjusting screw A, adjusting screw A's roof is connected with adjusting spring, adjusting spring's bottom fixedly connected with adjusting seat, adjusting seat's bottom threaded connection has the spring holder, diaphragm and drive block are installed to valve body mechanism's inner wall, and the drive block is located the below of diaphragm, gland nut and O type seal rubber ring are installed to valve body mechanism's inner wall, valve body mechanism's inner wall movable mounting has the needle, and the top of needle passes O type seal rubber ring and gland nut's inside in proper order and extend into the inside of drive block, the inner wall fixedly connected with elastic component of needle bottom, and the bottom fixedly connected with of elastic component's top and needle, the bypass hole has been seted up to the inner wall that valve body mechanism is close to elastic component department, and the top of bypass hole extends to the place of drive block.
Preferably, the structure of elastic component includes adjusting screw B, tower spring and valve opening push rod, adjusting screw B threaded connection is in the inner wall of valve body mechanism, valve opening push rod fixed connection is in the bottom of needle, tower spring fixed connection is at adjusting screw B's top, and the top of tower spring is laminated with the bottom of valve opening push rod.
Preferably, the diaphragm is located the below of spring holder, gland nut's bottom is laminated with O type seal rubber ring's top.
Preferably, the inner part of the O-shaped sealing rubber ring is attached to the outer surface of the valve needle, and the bottom end of the bypass hole is located below the valve port bushing.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the utility model, the PTV-EPV pressure-bearing sealing element is a stainless steel formed diaphragm, the allowable displacement is large, the mechanical life is long, the pressure-bearing area of the diaphragm is large, the response to pressure change is sensitive, the control on the same pressure is more accurate, the product volume is smaller, in addition, the regulating valve is directly arranged at the inlet end of the evaporator, the valve port tends to be maximum when the back pressure is high and high, the valve port directly reacts to the pressure in the evaporator, the reaction is rapid, the control is accurate, no external attachment element exists, and the operation of a user system host under long-term safe working condition can be improved.
2. In the utility model, the characteristic of the evaporating pressure regulating valve can reduce the customer system, and in a dry-cold system, the surface temperature of the evaporator can be directly and effectively controlled (3-5 ℃) under a heavy load, thereby dehydrating and preventing freezing, directly reducing the expansion valve and reducing the cost of the customer system.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the mounting structure of the diaphragm and the driving block of the present utility model.
In the figure: 1. a valve body mechanism; 2. a valve port bushing; 3. a valve opening push rod; 4. a tower-shaped spring; 5. an adjusting screw B; 6. an adjusting screw A; 7. an adjusting spring; 8. an adjusting seat; 9. a spring seat; 10. a membrane; 11. a transmission block; 12. a bypass hole; 13. a compression nut; 14. an O-shaped sealing rubber ring; 15. a valve needle; 16. and an elastic component.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an embodiment of the present utility model is provided:
the PTV-EPS evaporation pressure regulating valve comprises a valve body mechanism 1, wherein the inner wall of the valve body mechanism 1 is in threaded connection with a valve port bushing 2, the inner wall of the top of the valve body mechanism 1 is in threaded connection with an adjusting screw A6, the top wall of the adjusting screw A6 is connected with an adjusting spring 7, the bottom of the adjusting spring 7 is fixedly connected with an adjusting seat 8, the bottom of the adjusting seat 8 is in threaded connection with a spring seat 9, a diaphragm 10 and a transmission block 11 are arranged on the inner wall of the valve body mechanism 1, the transmission block 11 is arranged below the diaphragm 10, a compression nut 13 and an O-shaped sealing rubber ring 14 are arranged on the inner wall of the valve body mechanism 1, the top of a valve needle 15 movably arranged on the inner wall of the valve body mechanism 1 sequentially penetrates through the O-shaped sealing rubber ring 14 and the inside of the compression nut 13 and extends into the inside of the transmission block 11, the top of an elastic component 16 fixedly connected with the bottom of the valve needle 15 is fixedly connected with the bottom of the valve needle 15, and the top of a bypass hole 12 formed in the inner wall of the valve body mechanism 1 close to the elastic component 16 is extended to the position of the transmission block 11.
The sealing rubber ring 14 can effectively improve the tightness between the valve needle 15 and the inner wall of the valve body mechanism 1, and the bypass hole 12 is used for a high-pressure medium to enter a circulation channel in the regulating valve for acting on the diaphragm 10.
The structure of elastic component 16 includes adjusting screw B5, tower spring 4 and valve opening push rod 3, adjusting screw B5 threaded connection is in the inner wall of valve body mechanism 1, valve opening push rod 3 fixed connection is in the bottom of needle 15, tower spring 4 fixed connection is at the top of adjusting screw B5, and the top of tower spring 4 is laminated with the bottom of valve opening push rod 3, diaphragm 10 is located the below of spring holder 9, the bottom of gland nut 13 is laminated with the top of O type seal rubber ring 14, the inside of O type seal rubber ring 14 is laminated with the surface of needle 15, the bottom of bypass hole 12 is located the below of valve port bush 2.
The tower-shaped spring 4 has certain elastic performance, and can correspondingly pull up or contract down the comprehensive length under the action of external force, so that the relative positions of the valve opening push rod 3, the valve needle 15 and the valve port bushing 2 are conveniently adjusted, and in addition, the adjusting screw B5 is used for assembling the tower-shaped spring 4 and the valve body mechanism 1.
Working principle: by installing the PTV-EPS evaporation pressure regulating valve at the inlet end of the evaporator, under continuous and constant load, when the surface temperature of the evaporator rises, the pressure in the evaporator rises along with the rise, high-pressure medium enters the interior of the evaporation pressure regulating valve through a bypass hole 12 below a valve port bushing 2 and enters the lower end of a diaphragm 10 in the power head of the regulating valve, the diaphragm 10 is acted through a transmission block 11, so that the diaphragm 10 performs corresponding upward-displacement mechanical elastic motion, the regulating spring 7 at the upper end of the diaphragm 10 performs work, when the acting force is larger than the pressure spring force set by the regulating spring 7, a tower-shaped spring 4 below the space inside the valve body mechanism 1 generates upward pushing force to a valve opening push rod 3 under the action of self elasticity and upward acting of the diaphragm 10, when the pushing force is transmitted to the valve port bushing 15, the valve needle 15 can be caused to move upwards, the distance between the valve needle and the valve port bushing 2 is gradually increased, the supercooling agent in the evaporator is controlled to be increased through the regulating valve, the temperature of the evaporator is reduced, the evaporation pressure is kept within a given value; otherwise, if the surface temperature of the evaporator is reduced, the pressure in the evaporator is reduced along with the reduction of the pressure in the evaporator, the supercooled preparation flowing into the evaporator is reduced, the evaporation temperature is increased, and the evaporation pressure is increased to be within a given value range.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 (4)
- PTV-EPS evaporating pressure governing valve, including valve body mechanism (1), its characterized in that: the valve body mechanism is characterized in that the valve port bushing (2) is connected with the inner wall of the top of the valve body mechanism (1) in a threaded manner, the adjusting screw A (6) is connected with the adjusting spring A (6) in a threaded manner, the adjusting spring A (7) is connected with the adjusting seat (8) in a fixedly connected manner at the bottom of the adjusting spring A (7), the spring seat (9) is connected with the bottom of the adjusting seat (8) in a threaded manner, the membrane (10) and the transmission block (11) are mounted on the inner wall of the valve body mechanism (1) in a threaded manner, the transmission block (11) is positioned below the membrane (10), the compression nut (13) and the O-shaped sealing rubber ring (14) are mounted on the inner wall of the valve body mechanism (1), the valve needle (15) is movably mounted on the inner wall of the valve body mechanism (1), the top of the valve needle (15) sequentially penetrates through the O-shaped sealing rubber ring (14) and the compression nut (13) and extends into the transmission block (11), the inner wall at the bottom of the valve needle (15) is fixedly connected with the elastic component (16) in a fixedly connected manner, the top of the elastic component (16) and the bottom of the valve needle (15) is fixedly connected with the inner wall of the valve body (16) at the bottom of the valve body (1) in a position close to the valve body (12), and the top end of the bypass hole (12) extends to the position of the transmission block (11).
- 2. The PTV-EPS evaporating pressure regulating valve of claim 1, wherein: the structure of elastic component (16) includes adjusting screw B (5), tower spring (4) and valve opening push rod (3), adjusting screw B (5) threaded connection is in the inner wall of valve body mechanism (1), valve opening push rod (3) fixed connection is in the bottom of needle (15), tower spring (4) fixed connection is at the top of adjusting screw B (5), and the top of tower spring (4) is laminated with the bottom of valve opening push rod (3).
- 3. The PTV-EPS evaporating pressure regulating valve of claim 1, wherein: the diaphragm (10) is located below the spring seat (9), and the bottom of the compression nut (13) is attached to the top of the O-shaped sealing rubber ring (14).
- 4. The PTV-EPS evaporating pressure regulating valve of claim 1, wherein: the inside of O type sealing rubber ring (14) is laminated with the surface of needle (15), the bottom of bypass hole (12) is located valve port bush (2) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242999.8U CN220706515U (en) | 2023-08-21 | 2023-08-21 | PTV-EPS evaporating pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322242999.8U CN220706515U (en) | 2023-08-21 | 2023-08-21 | PTV-EPS evaporating pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706515U true CN220706515U (en) | 2024-04-02 |
Family
ID=90438012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322242999.8U Active CN220706515U (en) | 2023-08-21 | 2023-08-21 | PTV-EPS evaporating pressure regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706515U (en) |
-
2023
- 2023-08-21 CN CN202322242999.8U patent/CN220706515U/en active Active
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