CN211202962U - Novel PTV bypass valve - Google Patents
Novel PTV bypass valve Download PDFInfo
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- CN211202962U CN211202962U CN201920936999.9U CN201920936999U CN211202962U CN 211202962 U CN211202962 U CN 211202962U CN 201920936999 U CN201920936999 U CN 201920936999U CN 211202962 U CN211202962 U CN 211202962U
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Abstract
The utility model relates to the technical field of bypass valves, and discloses a novel PTV bypass valve, which comprises a valve body component, wherein the valve body component is provided with a plurality of openings, a valve port soft cushion and a cushion block are sequentially arranged in the valve body component, pin and ejector pin, the cushion joint is in the upper end of valve port cushion, the ejector pin passes through the pin joint in the upper end of cushion, the lower extreme opening part threaded connection of valve body subassembly has the spring adjustment seat, the upper end threaded connection of spring adjustment seat has the plug screw, valve body subassembly upper end open-ended top is equipped with the upper adjustment seat, the opening part threaded connection of upper adjustment seat upper end has adjusting screw A, install first adjusting spring in the adjusting screw A, first adjusting spring's lower extreme is connected with the spring holder, the compact heap is installed to the upper end opening part of valve body subassembly, the lower extreme card of compact heap is in the upper end of ejector pin, and the upper end of ejector pin passes. The utility model realizes the excellent sealing performance of the valve body; miniaturization of the valve body; high life of the valve body.
Description
Technical Field
The utility model relates to a bypass valve technical field especially relates to a novel PTV bypass valve.
Background
The PTV16BW hot gas bypass valve is connected with the outlet of the compressor and the inlet of the evaporator; the energy regulating valve can stabilize the pressure of the air suction port of the compressor. A mechanism for controlling valve inlet/outlet pressure using the principle of balance of refrigerant pressure and spring force. A hot gas bypass valve as an energy conditioner can provide a means: the system is maintained in proper operation at a given suction pressure by bypassing high pressure refrigerant to the low pressure side of the system. Regardless of the refrigeration or air conditioning system, such a bypass valve may be used if operation at low loads, but could result in coil icing or too short an operating cycle.
However, the existing inlet and outlet copper tubes are in a T shape, and the outlet copper tube is far away from the valve port, and the copper tube must be machined → welded → passivated technically; welding and passivation can cause deformation of the valve port, and finally leakage of the valve port is caused; the existing inlet and outlet copper tubes are in a T shape, a valve body needs to be forged, and the whole volume of the valve body is larger; the cost is high, and the miniaturization of the refrigerating system is not facilitated; the valve port of the bypass valve is sealed by stainless steel and brass at present, the hard seal has higher requirements on machining, and the sealing surface needs to be accurately ground after the machining is finished, so that the machining cost is higher; the impact deformation tendency of the hard sealing brass valve port is increased, so that the service life is short; by adopting a PTFE (polytetrafluoroethylene) soft sealing mode, the brass valve port has no deformation, and the service life is greatly prolonged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that welding and passivation can lead to the valve port to warp among the prior art, the cost is high on the left and the life-span is short, and the novel PTV bypass valve that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a novel PTV bypass valve comprises a valve body component, wherein the valve body component is provided with a plurality of openings, a valve port cushion, a cushion block, a pin and an ejector rod are sequentially arranged in the valve body component, the cushion block is clamped at the upper end of the valve port cushion, the ejector rod is connected into the upper end of the cushion block through the pin, a spring adjusting seat is in threaded connection with the lower end opening of the valve body component, a screw plug is in threaded connection with the upper end of the spring adjusting seat, an upper adjusting seat is arranged above the opening at the upper end of the valve body component, an adjusting screw A is in threaded connection with the opening at the upper end of the upper adjusting seat, a first adjusting spring is arranged in the adjusting screw A, a spring seat is connected with the lower end of the first adjusting spring, a spring seat is arranged on the upper end opening of the valve body component, a pressing block is clamped at the, a second adjusting spring is arranged between the valve port soft cushion and the spring adjusting seat.
Preferably, the upper end of the upper adjusting seat is sleeved with a first dust cover, and the adjusting screw A is positioned in the first dust cover.
Preferably, the openings at two sides of the valve body assembly are welded with connecting pipes, and the connecting pipes are sleeved with second dust covers.
Preferably, the connecting pipe and the valve body assembly are brazed by using% silver.
Preferably, an O-shaped ring is arranged between the ejector rod and the opening at the upper end of the valve body assembly.
Preferably, the valve body assembly and the upper adjusting seat are coated with anticorrosive coatings.
Compared with the prior art, the utility model provides a novel PTV bypass valve possesses following beneficial effect:
the valve body assembly, the valve port cushion, the cushion block, the pin, the ejector rod, the spring adjusting seat, the screw plug and the upper adjusting seat are arranged, so that the excellent sealing performance of the valve body is realized; miniaturization of the valve body; high life of the valve body.
Drawings
Fig. 1 is a schematic front view of a novel PTV bypass valve according to the present invention;
fig. 2 is a schematic view of a top view structure of the novel PTV bypass valve provided by the present invention.
In the figure: the valve comprises a valve body assembly 1, a valve port cushion 2, a cushion block 3, a pin 4, an ejector rod 5, a spring adjusting seat 6, a screw plug 7, an upper adjusting seat 8, an adjusting screw A9, a first adjusting spring 10, a spring seat 11, a pressing block 12, an O-shaped ring 13, a power head assembly 14, a second adjusting spring 15, a first dust cover 16 and a second dust cover 17.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1-2, a novel PTV bypass valve comprises a valve body assembly 1, the valve body assembly 1 is provided with a plurality of openings, a valve port cushion 2, a cushion block 3, a pin 4 and a top rod 5 are sequentially installed in the valve body assembly 1, the cushion block 3 is clamped at the upper end of the valve port cushion 2, the top rod 5 is connected in the upper end of the cushion block 3 through the pin 4, a spring adjusting seat 6 is in threaded connection with the lower end opening of the valve body assembly 1, a plug screw 7 is in threaded connection with the upper end of the spring adjusting seat 6, an upper adjusting seat 8 is arranged above the upper end opening of the valve body assembly 1, an adjusting screw a9 is in threaded connection with the opening at the upper end of the upper adjusting seat 8, a first adjusting spring 10 is installed in an adjusting screw a9, a spring seat 11 is connected with the lower end of the first adjusting spring 10, a pressing block 12 is, and the upper end of the ejector rod 5 passes through the compact heap 12 to be arranged, a power head assembly 14 is connected between the valve body component 1 and the upper adjusting seat 8 through common screw threads, a second adjusting spring 15 is arranged between the valve port cushion 2 and the spring adjusting seat 6, and the PTV16BW is an energy adjusting valve capable of stabilizing the pressure of a compressor suction port. The air inlet is connected with the high-pressure exhaust port of the compressor, and the exhaust port is connected with the air inlet of the evaporator. At the factory, a pressure P3 is set, so that P3+ P2 is P1 (where P1 is the force by which the adjustment spring (No. 10) is compressed, P2 is the force by which the adjustment spring (No. 15) is compressed, and P3 is a predetermined evaporator inlet pressure).
When the bypass valve is connected into the system, the bypass valve is controlled to be opened and closed by the pressure change of the air inlet of the evaporator. When the inlet pressure value P3 is less than P1-P2, the valve port soft cushion (serial number 2) moves downwards, the valve port is opened, the evaporator coil is quickly defrosted, and the pressure of the air suction port of the compressor is ensured; otherwise, when P3 is more than P1-P2, the valve is closed and does not work; the above steps are repeated.
The welded pipe at the inlet and the outlet of the valve body is in a straight shape, and in the processing technology, the welded pipe end at the inlet and the outlet of the valve body can be firstly processed, then welded, then passivated, and finally the valve opening end is finely turned. Therefore, the deformation of the valve port caused by overhigh and passivated welding temperature can be avoided, and the leakage problem of the valve body is solved.
Meanwhile, the 'soft sealing' structure of the valve port cushion (serial number 2) and the valve port (serial number 1) of the valve body in the structure can reach an optimal state, and the valve port sealing structure is very practical for prolonging the service life of the hot gas bypass valve through repeated experiments. After the production and debugging of the bypass valve are finished, a user only needs to connect the air inlet and the air outlet, and the requirements of the user can be met without any adjustment.
The upper end of the upper adjusting seat 8 is sleeved with a first dust cover 17, and the adjusting screw A9 is positioned in the first dust cover 17 to prevent dust from falling into the upper adjusting seat 8.
The connecting pipes are welded at the openings at the two sides of the valve body assembly 1, and the second dust cover 18 is sleeved on the connecting pipes to prevent dust from falling into the connecting pipes.
The connecting pipe and the valve body assembly 1 are brazed by 45% silver, so that the connecting pipe and the valve body assembly 1 are more reliably connected.
An O-shaped ring 13 is arranged between the mandril 5 and the opening at the upper end of the valve body component 1, and plays a role in sealing.
The valve body assembly 1 and the upper adjusting seat 8 are coated with anticorrosive coatings to play a role in corrosion prevention.
In the present invention, the PTV16BW is an energy regulating valve capable of stabilizing the pressure of the suction port of the compressor. The air inlet is connected with the high-pressure exhaust port of the compressor, and the exhaust port is connected with the air inlet of the evaporator. At the factory, a pressure P3 is set, so that P3+ P2 is P1 (where P1 is the force by which the adjustment spring (No. 10) is compressed, P2 is the force by which the adjustment spring (No. 15) is compressed, and P3 is a predetermined evaporator inlet pressure).
When the bypass valve is connected into the system, the bypass valve is controlled to be opened and closed by the pressure change of the air inlet of the evaporator. When the inlet pressure value P3 is less than P1-P2, the valve port soft cushion (serial number 2) moves downwards, the valve port is opened, the evaporator coil is quickly defrosted, and the pressure of the air suction port of the compressor is ensured; otherwise, when P3 is more than P1-P2, the valve is closed and does not work; the above steps are repeated.
The welded pipe at the inlet and the outlet of the valve body is in a straight shape, and in the processing technology, the welded pipe end at the inlet and the outlet of the valve body can be firstly processed, then welded, then passivated, and finally the valve opening end is finely turned. Therefore, the deformation of the valve port caused by overhigh and passivated welding temperature can be avoided, and the leakage problem of the valve body is solved.
Meanwhile, the 'soft sealing' structure of the valve port cushion (serial number 2) and the valve port (serial number 1) of the valve body in the structure can reach an optimal state, and the valve port sealing structure is very practical for prolonging the service life of the hot gas bypass valve through repeated experiments. After the production and debugging of the bypass valve are finished, a user only needs to connect the air inlet and the air outlet, and the requirements of the user can be met without any adjustment.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A novel PTV bypass valve comprises a valve body assembly (1) and is characterized in that the valve body assembly (1) is provided with a plurality of openings, a valve port cushion (2), a cushion block (3), a pin (4) and an ejector rod (5) are sequentially arranged in the valve body assembly (1), the cushion block (3) is connected to the upper end of the valve port cushion (2) in a clamping manner, the ejector rod (5) is connected to the upper end of the cushion block (3) through the pin (4), a spring adjusting seat (6) is in threaded connection with the opening at the lower end of the valve body assembly (1), a plug screw (7) is in threaded connection with the upper end of the spring adjusting seat (6), an upper adjusting seat (8) is arranged above the opening at the upper end of the valve body assembly (1), an adjusting screw A (9) is in threaded connection with an opening at the upper end of the upper adjusting seat (8), a first adjusting spring (10, the lower extreme of first regulating spring (10) is connected with spring holder (11), compact heap (12) are installed to the upper end opening part of valve body subassembly (1), the lower extreme card of compact heap (12) is in the upper end of ejector pin (5), and the upper end of ejector pin (5) passes compact heap (12) and sets up, common threaded connection has unit head assembly (14) between valve body subassembly (1) and last regulation seat (8), install second regulating spring (15) between valve port cushion (2) and spring adjustment seat (6).
2. A novel PTV bypass valve according to claim 1, characterised in that a first dust cover (16) is sleeved on the upper end of the upper adjusting seat (8), and the adjusting screw A (9) is positioned in the first dust cover (16).
3. A novel PTV bypass valve according to claim 1, characterized in that connecting pipes are welded at the two side openings of the valve body assembly (1), and a second dust cover (17) is sleeved on the connecting pipes.
4. A novel PTV bypass valve according to claim 3, characterised in that the connecting tube and valve body assembly (1) is made of 45% silver brazing.
5. A novel PTV bypass valve according to claim 1, characterized in that an O-ring (13) is installed between the top rod (5) and the opening at the upper end of the valve body component (1).
6. A novel PTV bypass valve according to claim 1, characterised in that the valve body assembly (1) and the upper adjustment seat (8) are coated with a corrosion resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920936999.9U CN211202962U (en) | 2019-06-20 | 2019-06-20 | Novel PTV bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920936999.9U CN211202962U (en) | 2019-06-20 | 2019-06-20 | Novel PTV bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202962U true CN211202962U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920936999.9U Active CN211202962U (en) | 2019-06-20 | 2019-06-20 | Novel PTV bypass valve |
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| Country | Link |
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| CN (1) | CN211202962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819292A (en) * | 2021-08-26 | 2021-12-21 | 中信重工机械股份有限公司 | Two-position five-way valve for automatic liquid drainage device |
-
2019
- 2019-06-20 CN CN201920936999.9U patent/CN211202962U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819292A (en) * | 2021-08-26 | 2021-12-21 | 中信重工机械股份有限公司 | Two-position five-way valve for automatic liquid drainage device |
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