Heat exchanger for high-pressure refrigeration type compressed air dryer

Abstract

The invention relates to the technical field of heat exchangers, in particular to a heat exchanger for a high-pressure refrigeration type compressed air dryer, which comprises a heat exchanger assembly, a plate heat exchanger, a pressing plate fixed on the outer wall of the plate heat exchanger and a heat transfer plate sheet mounted on the inner wall of the pressing plate, and a connector is mounted outside the pressing plate; the separating assembly comprises a connecting shell fixedly connected with the connector, a rotating shell movably arranged on the inner wall of the connecting shell, a floating ball located at the end of the connecting shell and a buffer block fixed to the inner wall of the connecting shell; compressed air drives the rotating shell to rotate in the connecting shell, the rotating speed of the compressed air in the connecting shell is further increased through rotation of the rotating shell, inertia and centrifugal force generated during rotation are increased, water separation is improved, the falling speed of the floating ball can be slowed down through a buffer block at the bottom, and the service life of the floating ball is prolonged. And internal accumulated water accumulation caused by the fact that the water outlet is blocked when accumulated water at the bottom is not completely drained due to the fact that the floating ball falls too fast after the accumulated water is drained is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a heat exchanger used for a high-pressure refrigeration compressed air dryer. Background Art

[0002] In the current industrial production field, high-pressure refrigerated compressed air dryers play a vital role. They can effectively remove moisture from compressed air and ensure that the compressed air is dry and pure to meet the needs of various industrial applications. However, there are some problems in the design and use of the existing high-pressure refrigerated compressed air dryer heat exchanger.

[0003] Traditional heat exchangers usually adopt shell and tube or fin type structure design. Although these designs can achieve heat exchange function, due to the complex structure and large size, it not only increases the manufacturing cost of the equipment, but also increases the difficulty of installation and maintenance. In addition, the existing heat exchangers generally lack an efficient gas-water separation mechanism in structure. The water vapor in the compressed air will condense into liquid water. If the liquid water cannot be separated from the compressed air in a timely and effective manner, it will cause water accumulation inside the equipment, which will cause rust, blockage and other problems.

[0004] A Chinese patent with publication number CN110500813A discloses a heat exchanger for a high-pressure refrigerated compressed air dryer, which integrates a pre-cooling and reheating core, an evaporator core and a gas-water separator core, and all the connections between the components and the cylindrical shell are threaded and sealed with O-rings. During the design, only the structural strength needs to be verified, and no complex fatigue analysis design is required. The complex processes and strict process requirements of the high-pressure heat exchanger such as expansion and welding are completely avoided, and the risk of compressed air or refrigerant leakage and blowby due to minor process defects in welding and expansion is solved.

[0005] Although the heat exchanger in the above solution integrates the gas-water separator core, the efficiency of gas-water separation may be affected under high-load operation or specific working conditions. If the liquid water cannot be effectively separated, the risk of water accumulation inside the equipment will increase, thereby affecting the normal operation and service life of the equipment. At the same time, if the bottom of the gas-water separation core is not drained smoothly, the water inside the equipment cannot be discharged in time, causing rust, blockage and other problems, which will not only affect the performance of the equipment, but may also increase maintenance costs and downtime. Summary of the invention

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: A heat exchanger for a high-pressure refrigerated compressed air dryer, comprising a heat exchanger assembly, including a plate heat exchanger, a pressing plate fixed to the outer wall of the plate heat exchanger, a heat transfer plate installed on the inner wall of the pressing plate, and a connector installed outside the pressing plate;

[0008] The pressing plate is used to fix the heat transfer plate, and the heat transfer plate is used to separate the refrigerant and the compressed air to complete the heat exchange;

[0009] A separation assembly, comprising a connection shell fixedly connected to the connection head, a rotating shell movably arranged on the inner wall of the connection shell, a floating ball located at the end of the connection shell, and a buffer block fixed to the inner wall of the connection shell;

[0010] The connecting shell is used to separate moisture in the compressed air, the rotating shell is used to speed up the rotation speed of the compressed air, and the buffer block is used to slow down the falling speed of the floating ball.

[0011] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a refrigerant inlet and a refrigerant outlet are provided on one side of the outer wall of the pressure plate, an air inlet and an air outlet are provided on the other side of the outer wall of the pressure plate, an air inlet pipe is provided at the end of the connector and the air inlet pipe is connected to the air outlet, and an air outlet pipe is provided at the end of the connector away from the air inlet pipe.

[0012] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a rising pipe is arranged inside the connector and the outer wall of the rising pipe is connected to the outlet pipe, the rising pipe is connected to the outer wall of the inlet pipe and is provided with a wind shield groove, and a flow guide pipe is arranged at the end of the connector.

[0013] As a preferred solution of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a guide groove is provided on the inner wall of the connecting shell, a fixing ring is fixed to the inner wall of the connecting shell, a ball bearing is arranged in an array at the end of the fixing ring, a slope is provided at the end of the fixing ring and a filter plate is provided at the end of the slope, and the filter plate is fixed inside the connecting shell.

[0014] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, an air guide port is provided at the end of the rotating shell and the end of the air guide port extends to the inner wall of the ascending pipe, an inclined plate is provided at the end of the air guide port array, a moving ring is fixed at the end of the inclined plate, a drainage port is provided between the moving ring and the inclined plate, and a concave ring is provided on the end face of the moving ring.

[0015] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a connecting rod is provided on the outer wall of the float, a cover plate is provided on the side of the connecting rod away from the float, the cover plate is hinged to the inner wall of the connecting shell, and a fixing block is also provided on the end of the float.

[0016] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer according to the present invention, an oil storage cavity is provided on the inner wall of the buffer block, and a first connecting channel and a second connecting channel connected to the oil storage cavity are also provided on the inner wall of the buffer block, and a third connecting channel connected to the oil storage cavity is also provided on the outer wall of the second connecting channel.

[0017] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a movable cylinder is movably arranged in the oil storage chamber, a connecting chamber is opened on the inner wall of the movable cylinder, a rack is arranged on the inner wall of the connecting chamber, and an oil outlet is opened on the outer wall of the connecting chamber.

[0018] As a preferred solution of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a first elastic member is arranged inside the oil storage chamber and the outer wall of the first elastic member is movably connected to the end of the movable cylinder, and a gear is arranged on the inner wall of the connecting chamber and the gear is meshed with the rack.

[0019] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer described in the present invention, a rotating shaft is arranged at the center of the gear axis and a connecting column is arranged at one end of the rotating shaft extending to the outside of the buffer block, and the end of the connecting column extends to the inner wall of the fixed block and is movably connected thereto.

[0020] Beneficial effects of the present invention: the present invention installs a rotating shell inside the connecting shell, and drives the rotating shell to rotate inside the connecting shell through compressed air. The rotation of the rotating shell further increases the rotation speed of the compressed air inside the connecting shell, increases the inertia and centrifugal force generated during rotation, and is beneficial to improving the separation of moisture. The buffer block at the bottom can slow down the falling speed of the float, preventing the float from falling too fast after the accumulated water is discharged, resulting in the accumulated water at the bottom not being completely discharged and blocking the water outlet, causing water accumulation inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1It is a schematic diagram of the overall structure of the heat exchanger used for the high-pressure refrigerated compressed air dryer in the present invention;

[0023] Figure 2 It is a schematic diagram of the connection between the heat exchanger component and the separation component in the present invention;

[0024] Figure 3 is a side cross-sectional view of the connector in the present invention;

[0025] Figure 4 is a cross-sectional bottom view of the connector of the present invention;

[0026] Figure 5 A cross-sectional view showing the connection relationship between the separation component and the connector in the present invention;

[0027] Figure 6 is a side cross-sectional view of the separation assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the rotating shell in the present invention;

[0029] Figure 8 It is a side sectional view of the buffer block in the present invention.

[0030] Reference numerals: 100, heat exchanger assembly; 101, plate heat exchanger; 1011, pressing plate; 1012, heat transfer plate; 1013, refrigerant inlet; 1014, refrigerant outlet; 1015, air inlet; 1016, air outlet; 102, connector; 1021, air inlet duct; 1022, air outlet duct; 1023, rising duct; 1024, wind shielding slot; 1025, flow guide pipe;

[0031] 200, separation assembly; 201, connecting shell; 2011, guide groove; 2012, fixing ring; 2013, ball; 2014, slope; 2015, filter plate; 202, rotating shell; 2021, air guide port; 2022, inclined plate; 2023, movement ring; 2024, drainage port; 2025, concave ring; 203, floating ball; 2031, connecting rod; 2032, cover plate; 20 33. Fixed block; 204. Buffer block; 2041. Oil storage chamber; 2042. First connecting channel; 2043. Second connecting channel; 2044. Third connecting channel; 2045. Movable cylinder; 2046. Connecting chamber; 2047. Rack; 2048. Oil outlet; 2049. First elastic member; 20410. Gear; 20411. Rotating shaft; 20412. Connecting column. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, provides a heat exchanger for a high-pressure refrigerated compressed air dryer.

[0037] Specifically, the heat exchanger for a high-pressure refrigerated compressed air dryer includes: a heat exchanger assembly 100, including a plate heat exchanger 101, a pressing plate 1011 fixed to the outer wall of the plate heat exchanger 101, a heat transfer plate 1012 installed on the inner wall of the pressing plate 1011, a refrigerant inlet 1013 and a refrigerant outlet 1014 opened on one side of the outer wall of the pressing plate 1011, an air inlet 1015 and an air outlet 1016 located on the other side of the outer wall of the pressing plate 1011, and a connector 102 is provided outside the air outlet 1016;

[0038] The separation assembly 200 includes a connection shell 201 fixedly connected to the connector 102 , a rotating shell 202 movably arranged on the inner wall of the connection shell 201 , a floating ball 203 located at the end of the connection shell 201 , and a buffer block 204 fixed to the inner wall of the connection shell 201 .

[0039] Among them, the heat transfer plate 1012 is installed in the middle of the pressure plates 1011 on both sides, and the heat transfer plate 1012 is squeezed and fixed by adjusting the distance between the pressure plates 1011 on both sides by screws. The heat transfer plates 1012 are sealed and guided by sealing gaskets to separate the cold and hot fluid channels. The refrigerant inlet 1013 and the compressed air inlet 1015 are opened together above the pressure plate 1011, and the refrigerant outlet 1014 and the air outlet 1016 are opened below the pressure plate 1011. The heat exchange is carried out between the refrigerant and the compressed air entering the plate heat exchanger 101 through the heat transfer plate 1012. The compressed air after the heat exchange enters the connecting head 102 from the air outlet 1016 and enters the separation component 200 below.

[0040] The connecting shell 201 is fixed below the connecting head 102. After the compressed air enters the connecting head 102, it first enters the interior of the connecting shell 201, and then enters the rotating shell 202, further driving the movement of the compressed air inside the connecting shell 201, separating the water vapor in the cooled compressed air. The water vapor is cooled and condensed into condensed water on the inner wall of the connecting shell 201 and flows into the bottom of the connecting shell 201. The separated gas moves upward through the rotating shell 202, is discharged to the outside through the connecting shell 201, and enters the next equipment. The condensed water accumulates at the bottom of the connecting shell 201. After accumulating to a certain amount, it drives the float 203 to rise, opens the water outlet at the bottom of the connecting shell 201, and the accumulated water is automatically discharged. At the same time, the buffer block 204 on the inner wall of the connecting shell 201 acts as a buffer for the float 203, causing it to fall slowly, which is conducive to the discharge of all the accumulated water inside the connecting shell 201.

[0041] In summary, when in use, the compressed air of the high-pressure refrigerated compressed air dryer first enters the pre-cooler for preliminary heat dissipation, and then enters the interior of the plate heat exchanger 101 through the air inlet 1015 of the pressure plate 1011. The heat exchange channel separated by the heat transfer plate 1012 allows the refrigerant and the compressed air to exchange heat, and the compressed air is further cooled. The further cooled compressed air is discharged from the air outlet 1016 and enters the connector 102. After entering the connector 102, the compressed air first enters the lower connection shell 201, and the air-water exchange inside the connection shell 201 is carried out. The moisture is cooled and condensed into water on the inner wall of the connecting shell 201 and flows into the bottom of the connecting shell 201. The dry compressed air flows upward and is discharged to the outside through the connecting head 102 and enters the equipment of the next process. The condensed water on the inner wall of the connecting shell 201 falls to the bottom and begins to condense. The float 203 floats upward due to the buoyancy of the accumulated water. The water outlet at the bottom is opened to discharge the accumulated water at the bottom to the outside. The float 203 loses the buoyancy of the accumulated water and flows downward. At the same time, the buffer block 204 controls the falling speed of the float 203 to slow down its falling speed, which is conducive to the discharge of all the accumulated water at the bottom.

[0042] Example 2

[0043] Reference Figure 2 to Figure 7 , which is the second embodiment of the present invention, and this embodiment is implemented based on the previous embodiment.

[0044] Specifically, an air inlet pipe 1021 is opened at the end of the connector 102 and the air inlet pipe 1021 is connected to the air outlet 1016 , and an air outlet pipe 1022 is opened at the end of the connector 102 away from the air inlet pipe 1021 .

[0045] Among them, the air inlet pipe 1021 and the air outlet pipe 1022 are at the same height and are opened on both sides of the connecting head 102. At the same time, the two are not directly connected. After the compressed gas enters the connecting head 102 through the air inlet pipe 1021, it is not directly discharged to the outside through the air outlet pipe 1022.

[0046] Preferably, a rising pipe 1023 is provided inside the connector 102 and the outer wall of the rising pipe 1023 is connected to the outlet pipe 1022 , the rising pipe 1023 is connected to the outer wall of the inlet pipe 1021 and is provided with a wind shielding groove 1024 , and a guide pipe 1025 is provided at the end of the connector 102 .

[0047] Among them, the rising pipe 1023 is fixed inside the connecting head 102, and the outer wall on one side is connected with the outlet pipe 1022. The channel between the air inlet pipe 1021 and the air outlet pipe 1022 is blocked by the outer wall of the rising pipe 1023. At the same time, a wind shielding groove 1024 is formed between the air inlet pipe 1021 and the rising pipe 1023. When the compressed air enters the interior through the air inlet pipe 1021, it will immediately impact the outer wall of the rising pipe 1023, and the compressed air will be guided to blow downwards through the wind shielding groove 1024 between the two. At the same time, one side of the wind shielding groove 1024 is a slope, and the compressed air will be guided to blow downwards through the guidance of the slope.

[0048] At the same time, the guide tube 1025 is fixed below the connector 102. When the compressed air enters the connector 102 through the air intake pipe 1021, it is guided by the inclined surface of the wind shielding groove 1024 and rotates and moves downward along the inner wall of the guide tube 1025.

[0049] A guide groove 2011 is provided on the inner wall of the connecting shell 201 , a fixing ring 2012 is fixed on the inner wall of the connecting shell 201 , a ball 2013 is arranged in an array at the end of the fixing ring 2012 , a slope 2014 is arranged at the end of the fixing ring 2012 , and a filter plate 2015 is arranged at the end of the slope 2014 , and the filter plate 2015 is fixed inside the connecting shell 201 .

[0050] Among them, the top end position of the connecting shell 201 is sleeved on the outside of the guide pipe 1025, and the compressed air enters the interior of the connecting shell 201 below after passing through the guide pipe 1025. At the same time, the guide groove 2011 is opened on the inner wall of the connecting shell 201 located below the guide pipe 1025. The guide groove 2011 is a spiral groove, which is opened step by step downward on the inner wall of the connecting shell 201, and is used to guide the compressed air to rotate and flow downward.

[0051] The compressed air enters the interior of the connecting head 102 through the air intake pipe 1021, and is then guided by the inclined surface of the wind shield groove 1024, and rotates obliquely downward to enter the interior of the connecting shell 201. At the same time, guided by the guide groove 2011 inside the connecting shell 201, the compressed air rotates downward at high speed inside the connecting shell 201, forming a rotating airflow field. When the compressed air rotates downward, the water in the compressed air is separated by the centrifugal force of the high-speed rotation and thrown to the inner wall of the connecting shell 201. The water condenses into condensed water and flows downward, while the compressed air continues to rotate downward along the central axis. When the compressed air touches the slope 2014 below, the direction of the compressed air flow is changed, and it moves upward along the axis without affecting the gas rotating downward along the inner wall of the connecting shell 201.

[0052] Preferably, an air guide port 2021 is provided at the end of the rotating shell 202 and the end of the air guide port 2021 extends to the inner wall of the rising pipe 1023, an inclined plate 2022 is provided in an array at the end of the air guide port 2021, a moving ring 2023 is fixed at the end of the inclined plate 2022, a drainage port 2024 is provided between the moving ring 2023 and the inclined plate 2022, and a concave ring 2025 is provided on the end face of the moving ring 2023.

[0053] Among them, the rotating shell 202 is movably placed inside the connecting shell 201, and the air guide port 2021 on the top extends into the interior of the rising pipe 1023 inside the connecting head 102. There are multiple arrays of inclined plates 2022 and they are fixed below the air guide port 2021 to form a whole. A moving ring 2023 is fixed to the bottom of the inclined plate 2022, and the moving ring 2023 is above the fixed ring 2012. The concave ring 2025 opened at the bottom of the moving ring 2023 covers the top of the ball 2013, so that the rotating shell 202 can move above the fixed ring 2012.

[0054] The outer wall of the rotating shell 202 is composed of a plurality of arrays of inclined plates 2022. The upper half of the rotating shell 202 is sealed, and the lower half is composed of multiple inclined plates 2022. A drainage port 2024 is formed between two adjacent inclined plates 2022. The compressed air enters the interior of the rotating shell 202 through the drainage port 2024 at the bottom of the rotating shell 202 and flows downward.

[0055] In summary, when in use, the compressed air after heat exchange inside the plate heat exchanger 101 enters the interior of the connecting head 102 through the air outlet 1016, and the compressed air entering through the air inlet pipe 1021 is blocked by the outer wall of the rising pipe 1023 and cannot flow out directly through the air outlet pipe 1022. It flows downward along the slope of the wind shield groove 1024 between the rising pipe 1023 and the air inlet pipe 1021, and enters the connecting shell 201 below.

[0056] The top of the rotating shell 202 extends into the inner wall of the ascending pipe 1023. When the compressed air flows downward through the wind shielding groove 1024, it will first pass through the outer surface of the rotating shell 202 and blow the inclined plate 2022 outside the rotating shell 202. The inclined plate 2022 is tilted outside the rotating shell 202 and rotates inside the connecting shell 201 under the blowing of the compressed air. At the same time, the compressed air flows downward through the drainage port 2024 at the bottom of the inclined plate 2022. The compressed air is affected by the wind shielding groove 1024. The rotating shell 202 is guided to rotate and flow downward, and the rotating shell 202 is driven to rotate inside the connecting shell 201 and continue to flow downward. The rotation of the rotating shell 202 further drives the compressed air to rotate inside the connecting shell 201, which is beneficial to further separate the moisture from the air, and the moisture is thrown out to the inner wall of the connecting shell 201. The moisture condenses into water on the inner wall of the connecting shell 201 and flows downward, drips through the slope 2014 below, and falls into the bottom through the filter plate 2015 below and accumulates.

[0057] At the same time, after passing through the rotating shell 202, the compressed air rotates downward on the inner wall of the connecting shell 201 through the guide groove 2011 below. As the compressed air rotates, the moisture carried inside is separated from the gas, and the moisture condenses into water on the inner wall and flows downward. When the compressed air rotates downward, after contacting the slope 2014 below, the compressed gas with the moisture separated continues to rotate downward along the central axis. When the compressed air touches the slope 2014 below, the direction of the compressed air flow is changed, and it moves upward along the axis, passes through the air guide port 2021 on the top of the rotating shell 202, enters the upper rising pipe 1023, and is discharged outward through the exhaust pipe 1022.

[0058] Example 3

[0059] Reference Figure 6 to Figure 8 , which is the third embodiment of the present invention, and this embodiment is implemented based on the previous embodiment.

[0060] Specifically, a connecting rod 2031 is disposed on the outer wall of the float 203 , a cover plate 2032 is disposed on the side of the connecting rod 2031 away from the float 203 , the cover plate 2032 is hinged to the inner wall of the connecting shell 201 , and a fixing block 2033 is also disposed at the end of the float 203 .

[0061] The float 203 is hollow inside, and a connecting rod 2031 is provided on the outer wall. A cover plate 2032 is provided at the end of the connecting rod 2031 and usually covers the water outlet. The cover plate 2032 is hinged to the bottom inner wall of the connecting shell 201. A fixed block 2033 is also provided on the top of the float 203. The connecting column 20412 outside the buffer block 204 passes through the fixed block 2033 and moves under the influence of the movement of the float 203.

[0062] Preferably, an oil storage cavity 2041 is formed on the inner wall of the buffer block 204, and a first connecting channel 2042 and a second connecting channel 2043 communicating with the oil storage cavity 2041 are formed on the inner wall of the buffer block 204, and a third connecting channel 2044 connected to the oil storage cavity 2041 is formed on the outer wall of the second connecting channel 2043.

[0063] Among them, the buffer block 204 is fixed on the inner wall of the connecting shell 201 near the slope 2014, and an oil storage chamber 2041 is opened inside the buffer block 204. Hydraulic oil is injected into the oil storage chamber 2041. The first connecting channel 2042 and the second connecting channel 2043 are respectively opened at the upper and lower sides of the oil storage chamber 2041, and are both connected to the oil storage chamber 2041. The difference is that there is a third connecting channel 2044 at one end of the second connecting channel 2043, which connects the second connecting channel 2043 and the oil storage chamber 2041.

[0064] The hydraulic oil in the oil storage chamber 2041 is pushed and squeezed to flow into these connecting channels.

[0065] A movable cylinder 2045 is movably arranged in the oil storage chamber 2041, a connecting chamber 2046 is opened on the inner wall of the movable cylinder 2045, a rack 2047 is arranged on the inner wall of the connecting chamber 2046, and an oil outlet 2048 is opened on the outer wall of the connecting chamber 2046, a first elastic member 2049 is arranged inside the oil storage chamber 2041, and the outer wall of the first elastic member 2049 is movably connected to the end of the movable cylinder 2045, a gear 20410 is arranged on the inner wall of the connecting chamber 2046, and the gear 20410 is meshed with the rack 2047.

[0066] Among them, the movable cylinder 2045 slides up and down inside the oil storage chamber 2041, and a connecting chamber 2046 passes through the surface. A rack 2047 is arranged on one side of the internal connecting chamber 2046. The first elastic member 2049 is below the movable cylinder 2045 and contacts with the lower surface of the movable cylinder 2045. The oil outlet 2048 is opened on the upper surface of the movable cylinder 2045, passes through the upper end position of the entire movable cylinder 2045, and connects the internal connecting chamber 2046 and the upper end position of the oil storage chamber 2041.

[0067] The gear 20410 is fixed inside the oil storage chamber 2041 and is located exactly inside the movable cylinder 2045. The gear 20410 is meshed with the rack 2047 inside the connecting chamber 2046. The rotation of the gear 20410 drives the movable cylinder 2045 to move inside the oil storage chamber 2041.

[0068] Preferably, a rotating shaft 20411 is provided at the axis of the gear 20410 and a connecting column 20412 is provided at one end of the rotating shaft 20411 extending to the outside of the buffer block 204, and the end of the connecting column 20412 extends to the inner wall of the fixing block 2033 and is movably connected thereto.

[0069] Among them, the rotating shaft 20411 at the axis of the gear 20410 extends to the outside of the buffer block 204, and the top position is fixedly connected to the connecting column 20412. The other end of the connecting column 20412 is connected to the fixed block 2033 above the float 203. Driven by the float 203, when the float 203 is driven by the accumulated water at the bottom to float upward, the fixed block 2033 above drives the connecting column 20412 to rotate around the connecting end of the rotating shaft 20411 as the axis, and at the same time drives the rotating shaft 20411 to rotate, and the gear 20410 inside the connecting cavity 2046 moves and rotates, driving the movable cylinder 2045 to move downward inside the buffer block 204.

[0070] In summary, during use, after the moisture in the compressed air is separated, it condenses into water and drips downward and gradually accumulates. The float 203 is affected by the buoyancy of the accumulated water and floats upward. When the float 203 floats upward, the upper fixed block 2033 drives the connecting column 20412 to rotate. At this time, the rotating shaft 20411 drives the gear 20410 to rotate inside the connecting chamber 2046, and through the engagement with the rack 2047, it drives the movable cylinder 2045 to slide downward inside the oil storage chamber 2041.

[0071] When the movable cylinder 2045 slides downward inside the oil storage chamber 2041, it squeezes the first elastic member 2049 and causes it to deform. When the movable cylinder 2045 moves downward, the hydraulic oil located at the first elastic member 2049 is squeezed by the movable cylinder 2045, and enters into the connecting chamber 2046 on the surface of the movable cylinder 2045 that moves downward through the first connecting channel 2042 below. As the hydraulic oil enters, the original hydraulic oil inside the connecting chamber 2046 plus the hydraulic oil that continues to enter from the first elastic member 2049 below fill the connecting chamber 2046, and the remaining part enters into the chamber on the other side of the movable cylinder 2045 through the oil outlet 2048 at the upper end of the movable cylinder 2045.

[0072] When the float 203 rises and all the water outlets below are opened, the accumulated water inside begins to be discharged to the outside through the water outlet at the bottom of the connecting shell 201. Since the compressed air from above continues to enter the inside, the air pressure inside the connecting shell 201 is higher than that outside. At this time, the accumulated water inside is quickly sprayed to the outside, and the accumulated water will be completely drained in a short time. The float 203 loses the buoyancy support of the accumulated water and will fall rapidly. At this time, the upward drive of the float 203 is lost, and the gear 20410 loses the drive on the rack 2047. At this time, the first elastic member 2049 below loses the extrusion force and begins to recover the deformation and push upward, driving the movable cylinder 2045 to move upward. Since the top of the float 203 is connected to the connecting column 20412, the descending speed of the float 203 is also affected by the connecting column 20412.

[0073] The float 203 loses the buoyancy of the water below and falls. When the first elastic member 2049 pushes the movable cylinder 2045 upward, the hydraulic oil in the chamber above the movable cylinder 2045 is squeezed, and the hydraulic oil enters the connecting chamber 2046 inside the movable cylinder 2045 through the second connecting channel 2043 and the third connecting channel 2044 above. Initially, the first elastic member 2049 rises faster, and the hydraulic oil enters the connecting chamber 2046 through the second connecting channel 2043 and the third connecting channel 2044. As the movable cylinder 2045 rises, when the movable cylinder 2045 blocks the third connecting channel 2044, only the second connecting channel 2043 is left. The channel 2043 continues to transport hydraulic oil to the connecting chamber 2046. At this time, the rising speed of the movable cylinder 2045 slows down, and the rotation speed of the gear 20410 in the connecting chamber 2046 slows down. The descending speed of the float 203 at the end of the connecting column 20412 is slowed down by the rotating shaft 20411. Even if the accumulated water at the bottom is discharged, the float 203 will not immediately fall to the bottom of the connecting shell 201, but will fall slowly. Even if the compressed air above stops entering and no condensed water continues to fall, the time for the slowly falling float 203 to fall to the bottom is enough for the remaining accumulated water to be completely discharged, thereby avoiding the accumulation of water at the bottom that cannot be completely discharged and causes part of the accumulated water to remain and accumulate at the bottom of the connecting shell 201.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat exchanger for a high-pressure refrigerated compressed air dryer, characterized in that: include: A heat exchanger assembly (100) comprises a plate heat exchanger (101), a pressing plate (1011) fixed to the outer wall of the plate heat exchanger (101), a heat transfer plate (1012) installed on the inner wall of the pressing plate (1011), and a connector (102) is installed outside the pressing plate (1011); The pressing plate (1011) is used to fix the heat transfer plate (1012), and the heat transfer plate (1012) is used to separate the refrigerant and the compressed air to complete the heat exchange; A separation assembly (200) comprises a connection shell (201) fixedly connected to the connection head (102), a rotating shell (202) movably arranged on the inner wall of the connection shell (201), a floating ball (203) located at the end of the connection shell (201), and a buffer block (204) fixed to the inner wall of the connection shell (201); The connecting shell (201) is used to separate moisture from the compressed air, the rotating shell (202) is used to increase the rotation speed of the compressed air, and the buffer block (204) is used to slow down the falling speed of the floating ball (203).

2. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 1, characterized in that: A refrigerant inlet (1013) and a refrigerant outlet (1014) are provided on one side of the outer wall of the pressure plate (1011), and an air inlet (1015) and an air outlet (1016) are also provided on the other side of the outer wall of the pressure plate (1011); an air inlet pipe (1021) is provided at the end of the connector (102), and the air inlet pipe (1021) is connected to the air outlet (1016); an air outlet pipe (1022) is provided at the end of the connector (102) away from the air inlet pipe (1021).

3. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 2, characterized in that: The connector (102) is provided with an ascending pipe (1023) inside, and the outer wall of the ascending pipe (1023) is connected to the air outlet pipe (1022); the ascending pipe (1023) is connected to the outer wall of the air inlet pipe (1021) and is provided with a wind shielding groove (1024); and a flow guide pipe (1025) is provided at the end of the connector (102).

4. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 3, characterized in that: The inner wall of the connection shell (201) is provided with a guide groove (2011), the inner wall of the connection shell (201) is fixed with a fixing ring (2012), the end of the fixing ring (2012) is provided with a ball (2013) in an array, the end of the fixing ring (2012) is provided with a slope (2014), and the end of the slope (2014) is provided with a filter plate (2015), and the filter plate (2015) is fixed inside the connection shell (201).

5. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 4, characterized in that: The end of the rotating shell (202) is provided with an air guide port (2021), and the end of the air guide port (2021) extends to the inner wall of the ascending pipe (1023); an array of inclined plates (2022) are provided at the end of the air guide port (2021); a moving ring (2023) is fixed to the end of the inclined plate (2022); a flow outlet (2024) is provided between the moving ring (2023) and the inclined plate (2022); and a concave ring (2025) is provided on the end surface of the moving ring (2023).

6. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 5, characterized in that: The outer wall of the float (203) is provided with a connecting rod (2031), a cover plate (2032) is provided on the side of the connecting rod (2031) facing away from the float (203), the cover plate (2032) is hinged to the inner wall of the connecting shell (201), and a fixing block (2033) is also provided at the end of the float (203).

7. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 6, characterized in that: The inner wall of the buffer block (204) is provided with an oil storage cavity (2041), and the inner wall of the buffer block (204) is also provided with a first connecting channel (2042) and a second connecting channel (2043) connected to the oil storage cavity (2041), and the outer wall of the second connecting channel (2043) is provided with a third connecting channel (2044) connected to the oil storage cavity (2041).

8. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 7, characterized in that: A movable cylinder (2045) is movably arranged in the oil storage cavity (2041), a connecting cavity (2046) is provided on the inner wall of the movable cylinder (2045), a rack (2047) is provided on the inner wall of the connecting cavity (2046), and an oil outlet (2048) is provided on the outer wall of the connecting cavity (2046).

9. The heat exchanger for a high-pressure refrigerated compressed air dryer according to claim 8, characterized in that: A first elastic member (2049) is disposed inside the oil storage chamber (2041), and the outer wall of the first elastic member (2049) is movably connected to the end of the movable cylinder (2045); a gear (20410) is disposed on the inner wall of the connecting chamber (2046), and the gear (20410) is meshed with the rack (2047).

10. The heat exchanger for a high pressure refrigerated compressed air dryer according to claim 9, characterized in that: A rotating shaft (20411) is arranged at the axis of the gear (20410), and a connecting column (20412) is arranged at one end of the rotating shaft (20411) extending to the outside of the buffer block (204), and the end of the connecting column (20412) extends to the inner wall of the fixed block (2033) and is movably connected thereto.

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