A heat exchanger for a high-pressure refrigerated compressed air dryer

Abstract

The present invention relates to the technical field of heat exchangers, in particular to a heat exchanger for a high-pressure refrigerated compressed air dryer, which includes a heat exchanger assembly comprising a plate heat exchanger, a pressing plate fixed to the outer wall of the plate heat exchanger, heat transfer plates installed on the inner wall of the pressing plate, and a connector installed outside the pressing plate; a separation assembly comprising a connection shell fixedly connected to the connector, 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; the compressed air drives the rotating shell to rotate inside the connection shell, and the rotation of the rotating shell further increases the rotation speed of the compressed air inside the connection shell, improving the inertia and centrifugal force generated during rotation, which is beneficial to improving the separation of moisture, and the buffer block at the bottom can delay the falling speed of the floating ball, preventing the floating ball from falling too fast after the accumulated water is discharged, resulting in the outlet being blocked before the accumulated water at the bottom is completely discharged, causing the accumulation of internal water.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to a heat exchanger for a high-pressure refrigerated compressed air dryer. Background Art

[0002] In the current industrial production field, high-pressure refrigerated compressed air dryers play a crucial role. They can effectively remove moisture in compressed air, ensuring the dryness and purity of compressed air to meet the requirements of various industrial applications. However, there are some problems in the design and use of the heat exchangers of existing high-pressure refrigerated compressed air dryers.

[0003] Traditional heat exchangers usually adopt shell-and-tube or finned-tube structure designs. Although these designs achieve the heat exchange function, due to their complex structures and large volumes, they not only increase the manufacturing cost of the equipment but also increase the difficulty of installation and maintenance. Moreover, existing heat exchangers generally lack an efficient air-water separation mechanism in their structures. The water vapor in compressed air will condense into liquid water. If these liquid waters cannot be separated from the compressed air in a timely and effective manner, it will cause water accumulation inside the equipment, which will in turn lead to problems such as rust and blockage.

[0004] Chinese Patent No. CN110500813A discloses a heat exchanger for a high-pressure refrigerated compressed air dryer, which integrates a precooling and reheating core body, an evaporator core body, and an air-water separator core body. All the connections between the components and the cylindrical shell adopt threaded connections and O-ring sealing methods. When designing, only the structural strength needs to be verified, and no complex fatigue analysis design is required, completely avoiding the complex processes and strict process requirements such as expansion joints and welding of high-pressure heat exchangers, and solving the risk of compressed air or refrigerant leakage and gas leakage caused by tiny process defects in welding and expansion joints.

[0005] Although the heat exchanger in the above solution integrates an air-water separator core body, under high-load operation or specific working conditions, the efficiency of air-water separation may be affected. If the liquid water cannot be effectively separated, it will increase the risk of water accumulation inside the equipment, which will in turn affect the normal operation and service life of the equipment. At the same time, if the drainage at the bottom of the air-water separation core body is not smooth, it will cause the water accumulation inside the equipment to be unable to be discharged in time, which will in turn lead to problems such as rust and blockage. This will not only affect the performance of the equipment but also may increase the maintenance cost and downtime. Summary of the Invention

[0006] In view of the problems existing in the above-mentioned 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 according to the present invention, the following is provided: a connecting rod is provided on the outer wall of the floating ball, a cover plate is provided on the side of the connecting rod away from the floating ball, the cover plate is hinged to the inner wall of the connecting shell, and a fixing block is further provided at the end of the floating ball.

[0016] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer according to the present invention, the following is provided: an oil storage cavity is formed in the inner wall of the buffer block, and a first connecting channel and a second connecting channel communicating with the oil storage cavity are further formed in the inner wall of the buffer block, and a third connecting channel connected to the oil storage cavity is further formed 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 according to the present invention, the following is provided: a movable cylinder is movably arranged in the oil storage cavity, a connecting cavity is formed in the inner wall of the movable cylinder, a rack is arranged on the inner wall of the connecting cavity, and an oil outlet is formed on the outer wall of the connecting cavity.

[0018] As a preferred embodiment of the heat exchanger for a high-pressure refrigerated compressed air dryer according to the present invention, the following is provided: a first elastic member is arranged inside the oil storage cavity, and the outer wall of the first elastic member is movably connected to the end of the movable cylinder, a gear is arranged on the inner wall of the connecting cavity, and the gear meshes with the rack.

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

[0020] Advantages of the present invention: By installing a rotating shell inside the connecting shell in the present invention, the rotating shell is driven to rotate inside the connecting shell by compressed air. The rotation of the rotating shell further increases the rotation speed of the compressed air inside the connecting shell, improves the inertia and centrifugal force generated during rotation, is beneficial to improving the separation of moisture, and the buffer block at the bottom can delay the falling speed of the floating ball, avoiding the situation that the floating ball falls 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 the accumulation of internal accumulated water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

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

[0023] Figure 2 Schematic diagram of the connection between the heat exchanger assembly and the separation assembly in the present invention;

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

[0025] Figure 4 Bottom-up cross-sectional view of the connector in the present invention;

[0026] Figure 5 Cross-sectional view of the connection relationship between the separation assembly and the connector in the present invention;

[0027] Figure 6 Side cross-sectional view of the separation assembly in the present invention;

[0028] Figure 7 Schematic diagram of the structure of the rotating shell in the present invention;

[0029] Figure 8 Side cross-sectional view of the buffer block in the present invention.

[0030] Reference numerals: 100, heat exchanger assembly; 101, plate heat exchanger; 1011, pressure plate; 1012, heat transfer plate; 1013, refrigerant inlet; 1014, refrigerant outlet; 1015, air inlet; 1016, air outlet; 102, connector; 1021, intake pipe; 1022, outlet pipe; 1023, rising pipe; 1024, wind deflector groove; 1025, guide pipe.

[0031] 200, separation assembly; 201, connection shell; 2011, diversion groove; 2012, fixing ring; 2013, ball; 2014, slope; 2015, filter plate; 202, rotating shell; 2021, air guide port; 2022, inclined plate; 2023, moving ring; 2024, drainage port; 2025, concave ring; 203, floating ball; 2031, connecting rod; 2032, cover plate; 2033, fixing block; 204, buffer block; 2041, oil storage cavity; 2042, first connection channel; 2043, second connection channel; 2044, third connection channel; 2045, movable cylinder; 2046, connection cavity; 2047, rack; 2048, oil outlet; 2049, first elastic member; 20410, gear; 20411, rotating shaft; 20412, connecting column. Detailed implementation manners

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings of the specification.

[0033] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Persons skilled in the art may make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0035] Embodiment 1

[0036] Refer to Figures 1 to 6 , which is the first embodiment of the present invention. This embodiment 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, which includes a plate heat exchanger 101, a pressing plate 1011 fixed to the outer wall of the plate heat exchanger 101, heat transfer plates 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] a separation assembly 200, which 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 plates 1012 are installed between the pressing plates 1011 on both sides, and the distance between the pressing plates 1011 on both sides is adjusted by screws to squeeze and fix the heat transfer plates 1012. The heat transfer plates 1012 are sealed and guided by a sealing gasket, separating into two fluid channels for cold and heat. The refrigerant inlet 1013 and the air inlet 1015 for compressed air are both opened above the pressing plate 1011, and the refrigerant outlet 1014 and the air outlet 1016 are opened below the pressing plate 1011. The heat transfer plates 1012 exchange heat between the refrigerant and the compressed air entering the plate heat exchanger 101. After heat exchange, the compressed air enters the connector 102 from the air outlet 1016 and enters the separation assembly 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 Figures 2 to 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 intake pipe 1021 and the outlet pipe 1022 are at the same height and are arranged on both sides of the connector 102. At the same time, they are not directly connected. After the compressed gas enters the connector 102 through the intake pipe 1021, it does not directly discharge outward through the outlet pipe 1022.

[0046] Preferably, a rising pipe 1023 is arranged 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 intake pipe 1021 and is provided with a wind shielding groove 1024. A diversion pipe 1025 is arranged at the end of the connector 102.

[0047] Among them, the rising pipe 1023 is fixed inside the connector 102, and the outer wall on one side is connected to the outlet pipe 1022. The outer wall of the rising pipe 1023 blocks the passage between the intake pipe 1021 and the outlet pipe 1022. At the same time, a wind shielding groove 1024 is formed between the intake pipe 1021 and the rising pipe 1023. When the compressed air enters the interior through the intake pipe 1021, it will impact on the outer wall of the rising pipe 1023 immediately. Through the wind shielding groove 1024 between the two, the compressed air is guided to blow downward. At the same time, one side of the wind shielding groove 1024 is an inclined surface, and through the guidance of the inclined surface, the compressed air is guided to blow downward.

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

[0049] A diversion groove 2011 is provided on the inner wall of the connection shell 201. A fixing ring 2012 is fixed on the inner wall of the connection shell 201. A plurality of balls 2013 are 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. The filter plate 2015 is fixed inside the connection shell 201.

[0050] Among them, the top of the connection shell 201 is sleeved outside the diversion pipe 1025. After the compressed air passes through the diversion pipe 1025, it enters the interior of the lower connection shell 201. At the same time, the diversion groove 2011 is provided on the inner wall of the connection shell 201 below the diversion pipe 1025. The diversion groove 2011 is a spiral groove, which is gradually opened downward on the inner wall of the connection shell 201 for guiding the compressed air to rotate and flow downward.

[0051] Compressed air enters the interior of the connector 102 through the intake pipe 1021. After that, it is guided by the inclined surface of the wind deflector groove 1024 and rotates obliquely downward into the interior of the connection shell 201. At the same time, guided by the flow guide groove 2011 inside the connection shell 201, the compressed air rotates downward at high speed inside the connection shell 201, forming a rotating airflow field. When the compressed air rotates downward, the moisture in the compressed air is separated by the centrifugal force of high-speed rotation and is thrown onto the inner wall of the connection shell 201. The moisture condenses into condensate and flows downward, while the compressed air continues to rotate downward along the central axis. When the compressed air touches the lower slope 2014, the direction of the compressed air flow changes, and it moves upward along the axis without affecting the gas rotating downward along the inner wall of the connection shell 201.

[0052] Preferably, a wind guide port 2021 is provided at the end of the rotating shell 202, and the end of the wind guide port 2021 extends to the inner wall of the rising pipe 1023. The end of the wind guide port 2021 is provided with inclined plates 2022 in an array. 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. A concave ring 2025 is formed on the end face of the moving ring 2023.

[0053] Among them, the rotating shell 202 is movably placed inside the connection shell 201. The wind guide port 2021 at the top extends into the interior of the rising pipe 1023 inside the connector 102. There are multiple inclined plates 2022 arranged in an array and fixed below the wind guide port 2021 to form a whole. The bottom of the inclined plate 2022 is fixed with a moving ring 2023. The moving ring 2023 is above the fixed ring 2012. The concave ring 2025 formed at the bottom of the moving ring 2023 covers above the ball 2013, enabling the rotating shell 202 to move above the fixed ring 2012.

[0054] The outer wall of the rotating shell 202 is composed of several inclined plates 2022 arranged in an array. The upper half of the shell 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. Compressed air enters the interior of the rotating shell 202 through the drainage port 2024 below the rotating shell 202 and flows downward.

[0055] In summary, during use, the compressed air that has undergone heat exchange inside the plate heat exchanger 101 enters the interior of the connector 102 through the air outlet 1016. The compressed air entering through the intake pipe 1021 is blocked by the outer wall of the rising pipe 1023 and cannot directly flow out through the air outlet pipe 1022. It flows downward along the inclined surface of the wind deflector groove 1024 between the rising pipe 1023 and the intake pipe 1021 and enters the lower connection shell 201.

[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 Figures 6 to 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 in the inner wall of the buffer block 204, and a first connection channel 2042 and a second connection channel 2043 communicating with the oil storage cavity 2041 are also formed in the inner wall of the buffer block 204. A third connection channel 2044 connected to the oil storage cavity 2041 is further formed on the outer wall of the second connection channel 2043.

[0063] Among them, the buffer block 204 is fixed at a position on the inner wall of the connection shell 201 close to the slope 2014. An oil storage cavity 2041 is formed inside the buffer block 204. Hydraulic oil is injected into the oil storage cavity 2041. The first connection channel 2042 and the second connection channel 2043 are respectively formed at the upper and lower sides of the oil storage cavity 2041 and are both communicated with the oil storage cavity 2041. The difference is that there is also a third connection channel 2044 at one end of the second connection channel 2043 to connect the second connection channel 2043 and the oil storage cavity 2041.

[0064] The hydraulic oil inside the oil storage cavity 2041 will flow into these connection channels under pushing and squeezing.

[0065] An active cylinder 2045 is movably arranged in the oil storage cavity 2041. A connection cavity 2046 is formed in the inner wall of the active cylinder 2045. A rack 2047 is arranged on the inner wall of the connection cavity 2046, and an oil outlet 2048 is formed on the outer wall of the connection cavity 2046. A first elastic member 2049 is arranged inside the oil storage cavity 2041, and the outer wall of the first elastic member 2049 is movably connected to the end of the active cylinder 2045. A gear 20410 is arranged on the inner wall of the connection cavity 2046, and the gear 20410 meshes with the rack 2047.

[0066] Among them, the active cylinder 2045 slides up and down inside the oil storage cavity 2041, and the connection cavity 2046 penetrates through the surface. A rack 2047 is arranged on one side of the inner connection cavity 2046. The first elastic member 2049 is below the active cylinder 2045 and contacts the lower surface of the active cylinder 2045. The oil outlet 2048 is formed on the upper surface of the active cylinder 2045 and penetrates through the upper end position of the whole active cylinder 2045 to connect the inner connection cavity 2046 and the upper end position of the oil storage cavity 2041.

[0067] The gear 20410 is fixed inside the oil storage cavity 2041 and is exactly located inside the active cylinder 2045. The gear 20410 meshes with the rack 2047 inside the connection cavity 2046, and the rotation of the gear 20410 drives the active cylinder 2045 to move inside the oil storage cavity 2041.

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

[0069] Among them, the rotating shaft 20411 at the center of the gear 20410 extends outside 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 floating ball 203. Driven by the floating ball 203, when the floating ball 203 floats upward driven by the bottom water accumulation, the upper fixed block 2033 drives the connecting column 20412 to rotate around the connecting end of the rotating shaft 20411, and at the same time drives the rotating shaft 20411 to rotate. 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 and condensed into water, it drips downward and gradually accumulates. Affected by the buoyancy of the accumulated water, the floating ball 203 floats upward. When the floating ball 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 cavity 2046. Through meshing with the rack 2047, the movable cylinder 2045 is driven to slide downward inside the oil storage cavity 2041.

[0071] When the movable cylinder 2045 slides downward inside the oil storage cavity 2041, it will squeeze the first elastic member 2049, causing it to deform. When the movable cylinder 2045 moves downward, the hydraulic oil at the position of the first elastic member 2049 is squeezed by the movable cylinder 2045 and enters the connecting cavity 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 cavity 2046 plus the continuously entering hydraulic oil at the position of the first elastic member 2049 below fills the connecting cavity 2046, and the remaining part enters 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 floating ball 203 rises and all the water outlets below are opened, the accumulated water inside starts to drain out through the water outlet at the bottom of the connecting shell 201. Since the compressed air above continuously enters the interior, the air pressure inside the connecting shell 201 is higher than the outside. At this time, the accumulated water inside sprays out quickly to the outside, and all the accumulated water will be emptied within a short time. The floating ball 203 loses the buoyancy support of the accumulated water and will quickly fall. At this time, without the upward drive of the floating ball 203, the gear 20410 loses the drive for the rack 2047. At this time, the first elastic member 2049 below loses the squeezing force and begins to recover its deformation and push upward, driving the movable cylinder 2045 to move upward. Since the upper part of the floating ball 203 is connected to the connecting column 20412, the falling speed of the floating ball 203 is also affected by the connecting column 20412.

[0073] When the floating ball 203 loses the buoyancy of the accumulated water below and descends, and the first elastic member 2049 pushes the movable cylinder 2045 upward, the hydraulic oil in the chamber above the movable cylinder 2045 is squeezed. The hydraulic oil enters the connecting chamber 2046 inside the movable cylinder 2045 through the upper second connecting channel 2043 and the third connecting channel 2044. Initially, the rising speed of the first elastic member 2049 is relatively fast. At this time, the hydraulic oil enters the connecting chamber 2046 through the second connecting channel 2043 and the third connecting channel 2044 together. As the movable cylinder 2045 rises, when the movable cylinder 2045 blocks the third connecting channel 2044, only the second connecting channel 2043 continues to supply 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 inside the connecting chamber 2046 slows down. The falling speed of the floating ball 203 at the end of the connecting column 20412 is slowed down through the rotating shaft 20411. Even if the accumulated water at the bottom is drained, the floating ball 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 more condensed water falls, the time for the slowly falling floating ball 203 to fall to the bottom is sufficient for all the remaining accumulated water to be drained, avoiding the situation where not all the accumulated water at the bottom can be drained, resulting in partial accumulation of the remaining water 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 and are not limitations. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within 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), the plate heat exchanger (101) further comprising a pressing plate (1011), a heat transfer plate (1012) mounted on the inner wall of the pressing plate (1011), and a connector (102) mounted 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) comprising 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); The outer wall of the floating ball (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 floating ball (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 floating ball (203); The buffer block (204) has an inner wall provided with an oil storage cavity (2041), and the inner wall of the buffer block (204) also has 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) has a third connecting channel (2044) connected to the oil storage cavity (2041); 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); A first elastic member (2049) is disposed inside the oil storage cavity (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 cavity (2046), and the gear (20410) is meshed with the rack (2047); 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.

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); and 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 flow 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 (213) 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: 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 ascending 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 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).

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