Heat exchanger with heat exchange tubes convenient to replace

Abstract

The invention provides a heat exchanger with heat exchange tubes convenient to replace, which belongs to the technical field of heat exchangers and comprises an object main body, a cover body, a leakage-proof unit and a connection unit, the object main body and the cover body are connected in an embedded mode to achieve the purpose of primary connection. A groove extending around the direction A is reserved in the peripheral face of the object body, and the positioning opening is located in the side, close to the cover body, of the tail end of the groove communicated with the positioning opening. The connecting unit is connected to the outer wall face of the cover body in a screwed mode and is restrained by the cover body to change in the direction A. A storage cavity which is leakproof and provided with a changeable containing space is formed between the connecting unit and the cover body. The heat exchanger solves the problems that according to an existing heat exchanger with the heat exchange tubes convenient to replace, the heat exchange tubes in the heat exchanger are rapidly replaced through cooperation of threaded rods and nuts, use is tedious, no leakage-proof assembly is arranged between a shell and a clamping lantern ring, the leakage-proof performance of the heat exchanger cannot be guaranteed, and normal work of the heat exchanger is not facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a heat exchanger which is convenient for replacing heat exchange tubes. Background Art

[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization.

[0003] Prior art CN221630466U discloses a heat exchanger that is easy to replace heat exchange tubes, including an object body, one side of the object body is fixedly connected with a clamping ring, one end of the object body is movably clamped with a shell, one side of the object body is fixedly connected with a pipeline group, the outer surface of the shell is fixedly connected with an inlet and outlet assembly, the bottom surface of the shell is fixedly connected with a support rod, one side of the object body is fixedly connected with a fixed block, one side of the fixed block is fixedly connected with a nut, one side of the nut is movably connected with a threaded rod, and one side of the shell is fixedly connected with a limited block. The heat exchanger realizes the rapid replacement of its internal heat exchange tubes through the cooperation of the threaded rod and the nut. During the assembly and disassembly process, the staff needs to repeatedly twist the threaded rod or the nut to perform assembly or disassembly, which is cumbersome to use, and there is no leak-proof component installed between the shell and the clamping ring. Therefore, the leak-proof performance of the heat exchanger cannot be guaranteed, which may not only cause heat loss, but also cause internal material overflow, which is not conducive to the normal operation of the heat exchanger. Summary of the invention

[0004] The present invention provides a heat exchanger with easy replacement of heat exchange tubes, and aims to solve the problem that the existing heat exchanger with easy replacement of heat exchange tubes realizes the rapid replacement of internal heat exchange tubes through the cooperation of threaded rods and nuts. During the assembly and disassembly process, the staff need to repeatedly twist the threaded rods or nuts to perform assembly or disassembly, which is cumbersome to use, and no leak-proof component is installed between the outer shell and the clamping ring. Therefore, the leak-proof performance of the heat exchanger cannot be guaranteed, which may not only cause heat loss, but also cause overflow of internal materials, which is not conducive to the normal operation of the heat exchanger.

[0005] The embodiment of the present invention provides a heat exchanger that is convenient for replacing heat exchange tubes, comprising an object body, a cover body, a leak-proof unit and a connection unit;

[0006] The object body and the cover body are embedded to achieve the purpose of preliminary connection, and the direction of the embedding of the object body and the cover body is set as direction A, and the cover body and the object body cooperate with each other and cannot rotate;

[0007] A groove extending in the direction A is reserved on the outer peripheral surface of the object body, the groove is arc-shaped, one end of the groove is connected to the end of the object body close to the cover body, and the other end of the groove is connected to a positioning port reserved on the outer surface of the object body, and the positioning port is located on the side of the cover body close to the end of the groove connected thereto;

[0008] The connecting unit is screwed on the outer wall of the cover body and is constrained by the cover body to move in direction A. A positioning column for cooperating with the channel is installed in the connecting unit. A storage cavity with a leak-proof and variable storage space is installed between the connecting unit and the cover body.

[0009] The anti-leakage unit comprises a silicone ring, an inner ring and a circular ring which are hoop-connected on the outer peripheral surface of the cover and connected in sequence along direction A. The silicone ring is located on the side of the inner ring close to the main body of the object and is used to be in close contact with the wall surface of the main body of the object. At the beginning, the wall surface of the silicone ring which is farther from the inner ring is a vertical surface. The circular ring is used to be in close contact with the connection unit and rotate with the connection unit. The inner ring has a plurality of concave surfaces and arched surfaces which are arranged at intervals along direction A. A plurality of rubber blocks which are not connected to each other are arranged in the circular ring. The rubber blocks are hollow inside. Each of the rubber blocks is used to make the partial area of ​​the corresponding inner ring arch toward the side close to the silicone ring. Each of the rubber blocks is connected to the storage cavity.

[0010] Before the object body and the cover body are embedded, the storage cavity between the connecting unit and the cover body is expanded to discharge the air in the rubber block into the storage cavity, so that the rubber block shrinks, and then the wall thickness of the inner ring in the direction A becomes smaller. After the object body and the cover body are connected, the accommodating space of the storage cavity between the connecting unit and the cover body is reduced, and the air in the storage cavity flows into the rubber block, so that the wall thickness of the inner ring in the direction A becomes larger again.

[0011] Further, the connecting unit includes a rotating sleeve 1 and a rotating sleeve 2, the centers of the rotating sleeve 1 and the rotating sleeve 2 are collinear and are both arranged along the direction A, the rotating sleeve 1 and the rotating sleeve 2 can rotate around the cover body together and can move relatively along the direction A, the rotating sleeve 1 is located on the side of the rotating sleeve 2 close to the object body, and the positioning column is fixedly connected to the inside of the rotating sleeve 1.

[0012] Furthermore, the object body comprises an inner shell, a blocking plate and a pipe group, the groove and the positioning port are reserved on the outer peripheral wall of the inner shell, the blocking plate is fixedly connected to the inner shell, and the pipe group is fixedly connected to the blocking plate;

[0013] The cover body includes an outer shell and a ring-shaped shell, wherein the ring-shaped shell is fixedly connected to one end inside the outer shell, and the outer end of the outer shell farther from the object body is fixedly connected to a pair of air outlet components in a mirror-image manner. The outer side of the outer shell is also fixedly connected to the inlet and outlet components, and the inlet and outlet components are located between the pair of air outlet components.

[0014] Furthermore, one end of the annular shell close to the sealing plate extends out of the outer shell; when the object body and the cover body are embedded, the inner shell is clamped on the outside of the annular shell, is in the rotating sleeve, and is pressed tightly with the leak-proof unit clamped on the outer shell.

[0015] Furthermore, a circular groove is reserved on the outer circumferential surface of the outer shell, and a barrier sleeve that cooperates with the circular groove in rotation is arranged on the inner circumferential surface of the rotating sleeve 1, and the circular groove constrains the rotating sleeve 1 to move along the direction A; the leak-proof unit is hoop-connected to the outer circumferential surface of the outer shell and is located on the side of the circular groove close to the object body, and each is pressed tightly against the barrier sleeve and the wall of the inner shell.

[0016] Furthermore, a plurality of escape openings are reserved on the outer side of the outer shell and on the peripheral wall corresponding to the circular ring on the anti-leakage unit, and the escape openings are used to receive the expanded rubber blocks.

[0017] Furthermore, each of the rubber blocks is connected to a channel, and each of the channels penetrates the barrier sleeve and is connected to the storage cavity.

[0018] Furthermore, the inner shell and the ring-shaped shell cooperate via the socket along direction A to restrict the rotation of the inner shell and the ring-shaped shell relative to each other.

[0019] Furthermore, the rotating sleeve 1 and the rotating sleeve 2 cooperate with each other via the socket along the direction A, so that the rotating sleeve 1 and the rotating sleeve 2 can rotate together and move along the direction A.

[0020] Furthermore, a plurality of grooves and positioning openings are reserved on the outer peripheral wall of the inner shell, and a plurality of positioning posts are correspondingly provided on the rotating sleeve.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention installs a rubber block in the ring on the leakproof unit. Before the object body and the cover body are embedded, the rubber block is shrunk, and the wall thickness of the leakproof unit in the direction A is reduced, thereby reducing the obstruction between the object body and the leakproof unit. The leakproof unit cannot bring a great obstruction to the movement of the positioning column in the groove, which in a certain aspect weakens the damage of the positioning column to the groove. After the object body and the cover body are successfully connected, the rubber block is then expanded, and then the wall surface of the leakproof unit in the direction A has a momentum to expand, thereby enhancing the close contact between the object body and the connection unit, thereby ensuring the connection between the object body and the cover body; the object body and During the approach of the cover body, the space formed by the inner shell body, the sealing plate and the ring-shaped shell gradually becomes smaller, and the air in the compression space flows through the gap between the inner shell body and the ring-shaped shell, and after passing through the area where the inner shell body and the leak-proof unit are pressed, it leaks out from the gap between the inner shell body and the rotating sleeve, and cleans out the debris at the place where the leak-proof unit and the inner shell body are attached, so as to avoid the weakening of the leak-proof function caused by the debris; the avoidance port can provide a storage area for the rubber block in the direction of the circular radius, and the rubber block embedded in the avoidance port can further restrict the connection unit from rotating around the outer shell, further enhance the reliability of the connection between the object body and the cover body, and ensure the leak-proof performance after the object body is assembled.

[0023] 2. When the heat exchange tube needs to be replaced, the positioning column is taken out from the positioning port, the object body and the cover body can be disassembled, and then the pipe group inside can be replaced, thereby making the replacement of the heat exchange tube more convenient.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a rear view structural schematic diagram of an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the main stereoscopic structure of an embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the explosion structure of an embodiment of the present invention;

[0029] Figure 4 It is a side view structural schematic diagram of an embodiment of the present invention;

[0030] Figure 5 For the embodiment of the present invention Figure 4 Schematic diagram of the cross-sectional structure in the MM direction;

[0031] Figure 6 This is a schematic diagram of the structure of the anti-leakage unit according to an embodiment of the present invention;

[0032] Figure 7 is a schematic cross-sectional structure diagram of a leakage prevention unit according to an embodiment of the present invention;

[0033] Figure 8 For the embodiment of the present invention Figure 4 Schematic diagram of the inner ring structure;

[0034] Figure numerals: 1. object body; 11. inner shell; 111. groove; 112. positioning port; 12. blocking plate; 13. pipeline group; 2. cover body; 21. outer shell; 211. annular groove; 212. escape port; 22. annular shell; 3. leak-proof unit; 31. silicone ring; 32. inner ring; 33. circular ring; 331. rubber block; 332. channel; 4. connecting unit; 41. rotating sleeve one; 411. barrier sleeve; 42. rotating sleeve two; 43. storage cavity; 44. positioning column; 5. air outlet assembly; 6. inlet and outlet assembly. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Reference Figure 1-Figure 8 An embodiment of the present invention provides a heat exchanger that is convenient for replacing heat exchange tubes, including an object body 1, a cover body 2, a leak-proof unit 3 and a connecting unit 4.

[0037] The object body 1 and the cover body 2 are embedded to achieve the purpose of preliminary connection. The embedding direction of the object body 1 and the cover body 2 is set as direction A; the cover body 2 and the object body 1 cooperate with each other and cannot rotate.

[0038] Reference Figure 3A groove 111 extending in the direction A is reserved on the outer peripheral surface of the object body 1, and the groove 111 is arc-shaped. One end of the groove 111 is connected to the end of the object body 1 close to the cover body 2, and the other end of the groove 111 is connected to a positioning port 112 reserved on the outer surface of the object body 1; the positioning port 112 is located at the end of the groove 111 connected thereto, close to the cover body 2.

[0039] Reference Figure 2 and Figure 3 The connecting unit 4 is screwed on the outer wall of the cover body 2 and is constrained by the cover body 2 to move in the direction A. A positioning column 44 for cooperating with the groove 111 is installed in the connecting unit 4; a leak-proof storage cavity 43 with a variable accommodating space is installed between the connecting unit 4 and the cover body 2.

[0040] Reference Figure 5-Figure 8 The leak-proof unit 3 includes a silicone ring 31, an inner ring 32 and a circular ring 33 which are hoop-connected on the outer circumference of the cover body 2 and connected in sequence along the direction A; the silicone ring 31 is located on the side of the inner ring 32 close to the object body 1, and is used to be in close contact with the wall surface of the object body 1, and at the beginning, the wall surface of the silicone ring 31 farther from the inner ring 32 is a vertical surface; the circular ring 33 is used to be in close contact with the connecting unit 4 and rotate with the connecting unit 4, and the circular ring 33 is made of tpe material; the inner ring 32 has a plurality of concave surfaces and arched surfaces arranged at intervals on the direction A, and a plurality of rubber blocks 331 which are not connected to each other are arranged in the circular ring 33, and the rubber blocks 331 are hollow inside, and each rubber block 331 is designed to allow the corresponding part of the inner ring 32 to arch toward the side close to the silicone ring 31; each rubber block 331 is connected to the storage cavity 43. The concave and convex surfaces of the inner ring 32 on the direction A make the inner ring 32 form several concave surfaces on one side close to the circular ring 33. The circular ring 33 is provided with a rubber block 331 on the concave surface of the inner ring 32. When the rubber block 331 expands, the wall thickness of the concave area of ​​the inner ring 32 on the direction A will increase again. When the rubber block 331 shrinks, the circular ring 33 and the inner ring 32 are connected, so that the wall thickness of the concave area of ​​the inner ring 32 on the direction A will decrease again. In addition, several storage spaces can be reserved in the circular ring 33 to replace the rubber blocks 331. Through the expansion and contraction of the storage space reserved on the circular ring 33, the same function as the rubber blocks 331 can be achieved.

[0041] Before the object body 1 and the cover body 2 are embedded, the storage cavity 43 between the connecting unit 4 and the cover body 2 is expanded to discharge the air in the rubber block 331 into the storage cavity 43, so that the rubber block 331 shrinks, and then the wall thickness of the inner ring 32 in the direction A becomes smaller. In addition, because the inner ring 32 is connected to the silicone ring 31, the shape of the inner ring 32 changes again, so that the wall surface of the silicone ring 31 farther from the inner ring 32 becomes a wall surface with alternating concave surfaces and arched surfaces. Then, the connecting unit 4 is rotated while the object body 1 and the cover body 2 are approaching each other, so that the positioning column 44 and the groove 111 cooperate with each other. During the rotation of the connecting unit 4, the positioning column 44 cooperates with the groove 111 to allow the object body 1 to approach the cover body 2. Before the positioning column 44 changes to the positioning port 112, the object body 1 and the leak-proof unit 3 are tightly attached. When the leak-proof unit 3 rotates with the connecting unit 4, the concave surface and the arched surface of the silicone ring 31 on the leak-proof unit 3 are alternately arranged to clean the wall surface of the object body 1, and the object body 1 is then approached to the cover body 2 so that the leak-proof unit 3 is compressed and changes its shape. When the positioning post 44 then moves to the positioning opening 112, the leak-proof unit 3 has been compressed and changed by the object body 1. When the positioning post 44 and the channel 111 are disassembled, the leak-proof unit 3, under the cooperation of its own deformation force, allows the object body 1 to move a short distance to the side farther from the cover body 2, and then allows the positioning post 44 to cooperate with the positioning opening 112. Because the positioning opening 112 is located at the end of the channel 111 connected to it and close to the side of the cover body 2, the positioning post 44 cannot easily cooperate with the channel 111 under the obstruction of the leak-proof unit 3, and then allows the object body 1 to be connected with the cover body 2. Then, the storage space of the storage cavity 43 between the connection unit 4 and the cover body 2 is reduced and restored to the initial appearance. The air in the storage cavity 43 flows into the rubber block 331, so that the wall thickness of the inner ring 32 in the direction A becomes larger again, and then the object body 1 and the connection unit 4 are pressed tighter, and the object body 1 and the cover body 2 are connected more firmly.

[0042] By installing a rubber block 331 in the ring 33 on the leakproof unit 3, before the object body 1 and the cover body 2 are embedded, the rubber block 331 is reduced, and the wall thickness of the leakproof unit 3 in the direction A is reduced, thereby reducing the obstruction between the object body 1 and the leakproof unit 3, and the leakproof unit 3 cannot bring a great obstruction to the movement of the positioning column 44 in the groove 111, which in a certain aspect reduces the damage of the positioning column 44 to the groove 111. After the object body 1 and the cover body 2 are successfully connected, the rubber block 331 is then expanded, and then the wall surface of the leakproof unit 3 in the direction A has a momentum to expand, thereby enhancing the close contact between the object body 1 and the connection unit 4, and then ensuring the connection between the object body 1 and the cover body 2.

[0043] Reference Figure 1-Figure 3 and Figure 5The connection unit 4 includes a rotating sleeve 1 41 and a rotating sleeve 2 42. The centers of the rotating sleeve 1 41 and the rotating sleeve 2 42 are collinear and arranged along the direction A. The rotating sleeve 1 41 and the rotating sleeve 2 42 can rotate together around the cover body 2 and can relatively change along the direction A. The rotating sleeve 1 41 is located on the side of the rotating sleeve 2 42 close to the object body 1, and the positioning column 44 is fixed inside the rotating sleeve 1 41. A storage cavity 43 is reserved between the rotating sleeve 1 41, the rotating sleeve 2 42 and the cover body 2; when the rotating sleeve 1 41 and the rotating sleeve 2 42 move away from each other, the storage space of the storage cavity 43 becomes larger, and the air in the rubber block 331 is sucked away. When the rotating sleeve 1 41 and the rotating sleeve 2 42 approach each other, the storage space of the storage cavity 43 becomes smaller, and the air is pressed into the rubber block 331. The outer peripheral walls of the rotating sleeve 1 41 and the rotating sleeve 2 42 are respectively provided with facing slopes. When the rotating sleeve 1 41 and the rotating sleeve 2 42 are pressed along the facing slopes, the rotating sleeve 1 41 and the rotating sleeve 2 42 can be pressed and pushed away from each other. When the pressing action on the rotating sleeve 1 41 and the rotating sleeve 2 42 is cancelled, the rubber block 331 recovers and expands to remove the air in the storage cavity 43. A spiral beryllium copper wire can be installed between the rotating sleeve 1 41 and the rotating sleeve 2 42. After the object body 1 and the cover body 2 are successfully connected, the rotating sleeve 1 41 and the rotating sleeve 2 42 can be brought close to each other, and then the rubber block 331 recovers and expands. Among them, leak-proof rings are installed between the rotating sleeve 1 41, the rotating sleeve 2 42 and the cover body 2. The rotating sleeve 1 41 and the rotating sleeve 2 42 can be connected via a telescopic tube to ensure that the storage cavity 43 remains closed when they are separated from each other.

[0044] Reference Figure 1 and Figure 5 The object body 1 includes an inner shell 11, a blocking plate 12 and a pipe group 13, and a channel 111 and a positioning port 112 are reserved on the outer peripheral wall of the inner shell 11. The blocking plate 12 is fixedly connected to the inner shell 11, and the pipe group 13 is fixedly connected to the blocking plate 12; the cover body 2 includes an outer shell 21 and a ring shell 22, and the ring shell 22 is fixedly connected to one end of the inner shell 21.

[0045] Reference Figure 5, the end of the ring-shaped shell 22 close to the blocking plate 12 extends out of the outer shell 21; when the object body 1 and the cover body 2 are embedded, the inner shell 11 is clamped on the outside of the ring-shaped shell 22, and is in the rotating sleeve 41, and is pressed against the leak-proof unit 3 clamped on the outer shell 21. The outer side of the outer shell 21 is fixedly connected to a pair of air outlet components 5 at the end farther from the object body 1, and the outer side of the outer shell 21 is also fixedly connected to the inlet and outlet components 6, and the inlet and outlet components 6 are located between the pair of air outlet components 5. Because the inner shell 11 and the annular shell 22, and the inner shell 11 and the rotating sleeve 41 are not completely sealed, when the object body 1 and the cover body 2 are close, the space formed by the inner shell 11, the sealing plate 12 and the annular shell 22 gradually becomes smaller, and the air in the compression space flows through the gap between the inner shell 11 and the annular shell 22, and after passing through the area where the inner shell 11 and the leak-proof unit 3 are pressed, it leaks out from the gap between the inner shell 11 and the rotating sleeve 41, and cleans out the debris at the place where the leak-proof unit 3 and the inner shell 11 are attached, so as to avoid the weakening of the leak-proof function due to the debris.

[0046] Reference Figure 2 and Figure 3 A circular groove 211 is reserved on the outer circumferential surface of the outer shell 21, and a barrier sleeve 411 that cooperates with the circular groove 211 in rotation is arranged on the inner circumferential surface of the rotating sleeve 41. The circular groove 211 constrains the rotating sleeve 41 to move along the direction A; the leak-proof unit 3 is hoop-connected to the outer circumferential surface of the outer shell 21 and is located on the side of the circular groove 211 close to the object body 1, and each is pressed tightly against the barrier sleeve 411 and the wall of the inner shell 11.

[0047] Reference Figure 3 A plurality of escape openings 212 are reserved on the outer side of the outer shell 21 and on the circumferential wall corresponding to the circular ring 33 on the leak-proof unit 3. The escape openings 212 are used to store the expanded rubber block 331. After the object body 1 and the cover body 2 are successfully embedded, the storage cavity 43 is restored and shrunk, and the rubber block 331 is restored and expanded. Due to the constraints of the inner shell 11 and the barrier sleeve 411, the expansion range of the rubber block 331 in the direction A is limited. The installation of the escape openings 212 can provide a storage area for the rubber block 331 in the direction of the circular ring 33 radius, and the rubber block 331 embedded in the escape openings 212 can again restrict the connection unit 4 from rotating around the outer shell 21, and further enhance the reliability of the connection between the object body 1 and the cover body 2.

[0048] Reference Figure 6 and Figure 7 Each rubber block 331 is connected to a channel 332 , and each channel 332 penetrates the barrier sleeve 411 and is connected to the storage cavity 43 , so that the leak-proof unit 3 can rotate along with the rotating sleeve 41 .

[0049] Reference Figure 3 and Figure 5The inner shell 11 and the ring-shaped shell 22 cooperate via the socket along the direction A to restrict the rotation between the inner shell 11 and the ring-shaped shell 22.

[0050] Reference Figure 5 The rotating sleeve 1 41 and the rotating sleeve 2 42 cooperate with each other through the socket along the direction A, so that the rotating sleeve 1 41 and the rotating sleeve 2 42 can rotate together and move along the direction A.

[0051] Reference Figure 3 A plurality of grooves 111 and positioning openings 112 are reserved on the outer peripheral wall of the inner shell 11, and a plurality of positioning posts 44 on the rotating sleeve 41 are correspondingly provided.

[0052] The specific implementation method is as follows: when the object body 1 and the cover body 2 are assembled, the rotating sleeve 1 41 and the rotating sleeve 2 42 are pressed along a pair of opposite slopes, so that the rotating sleeve 1 41 and the rotating sleeve 2 42 are separated from each other, and then the storage space of the storage cavity 43 becomes larger, and the air in the rubber block 331 is sucked into the storage cavity 43, so that the rubber block 331 becomes smaller, and then the wall thickness of the inner ring 32 in the direction A becomes smaller, and the inner ring 32 changes its shape again so that the side of the silicone ring 31 far from the inner ring 32 becomes a wall surface separated by a concave surface and an arch surface;

[0053] Then, the positioning column 44 is made to cooperate with the groove 111, and the rotating sleeve 1 41 and the rotating sleeve 2 42 are rotated, so that the positioning column 44 pulls the object body 1 close to the cover body 2 under the cooperation with the groove 111. Before the positioning column 44 is moved to the positioning port 112, the object body 1 and the silicone ring 31 on the leak-proof unit 3 have been pressed tightly. When the leak-proof unit 3 rotates with the connecting unit 4, the silicone ring 31 on the leak-proof unit 3 has a concave surface and an arched surface that alternately face the wall surface of the object body 1 to perform decontamination, and the debris during the decontamination is discharged along with the air pressed out from the space formed by the inner shell 11, the sealing plate 12 and the ring shell 22, and the object body The body 1 then approaches the cover body 2 so that the leakproof unit 3 is compressed and changed in shape. When the positioning column 44 then moves to the positioning opening 112, the leakproof unit 3 has been compressed and changed in shape by the object body 1. When the positioning column 44 and the groove 111 are separated, the leakproof unit 3 causes the object body 1 to move a short distance to a position farther from the cover body 2 under its own deformation, and then the positioning column 44 and the positioning opening 112 cooperate. Because the positioning opening 112 is located at the end of the groove 111 connected to it and close to the cover body 2, the positioning column 44 cannot easily cooperate with the groove 111 under the obstruction of the leakproof unit 3, and then the object body 1 and the cover body 2 are connected;

[0054] Then release the rotating sleeve 1 41 and the rotating sleeve 2 42, the storage cavity 43 has a trend of shrinking the accommodating space and returning to the initial state, and the rubber block 331 has a trend of recovering and changing its shape and expanding. The space in the storage cavity 43 flows into the rubber block 331, so that the wall thickness of the inner ring 32 in the direction A becomes larger again, so that the object body 1 and the connecting unit 4 can be pressed more firmly. However, due to the constraints of the inner shell 11 and the barrier sleeve 411, the expansion range of the rubber block 331 in the direction A is limited. The rubber block 331 increases in the direction of the radius of the ring 33 and is embedded in the avoidance opening 212, which again restricts the connecting unit 4 from rotating on the outside of the outer shell 21, and then further strengthens the reliability of the connection between the object body 1 and the cover body 2.

[0055] When the heat exchange tube needs to be replaced, the positioning column 44 is taken out from the positioning port 112, the object body 1 and the cover body 2 can be disassembled, and then the pipe group 13 inside can be replaced, and finally the above steps can be followed to assemble it again, thereby making the replacement of the heat exchange tube more convenient.

[0056] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A heat exchanger that is easy to replace heat exchange tubes, characterized in that: It includes an object body, a cover body, a leak-proof unit and a connecting unit; The object body and the cover body are embedded to achieve the purpose of preliminary connection, and the direction of the embedding of the object body and the cover body is set as direction A, and the cover body and the object body cooperate with each other and cannot rotate; A groove extending in the direction A is reserved on the outer peripheral surface of the object body, the groove is arc-shaped, one end of the groove is connected to the end of the object body close to the cover body, and the other end of the groove is connected to a positioning port reserved on the outer surface of the object body, and the positioning port is located on the side of the cover body close to the end of the groove connected thereto; The connecting unit is screwed on the outer wall of the cover body and is constrained by the cover body to move in the direction A. A positioning column for cooperating with the channel is installed in the connecting unit. A leak-proof storage cavity with a variable accommodating space is installed between the connecting unit and the cover body. The anti-leakage unit comprises a silicone ring, an inner ring and a circular ring which are hoop-connected on the outer peripheral surface of the cover and connected in sequence along direction A. The silicone ring is located on the side of the inner ring close to the main body of the object and is used to be in close contact with the wall surface of the main body of the object. At the beginning, the wall surface of the silicone ring which is farther from the inner ring is a vertical surface. The circular ring is used to be in close contact with the connection unit and rotate with the connection unit. The inner ring has a plurality of concave surfaces and arched surfaces which are arranged at intervals along direction A. A plurality of rubber blocks which are not connected to each other are arranged in the circular ring. The rubber blocks are hollow inside. Each of the rubber blocks is used to make the partial area of ​​the corresponding inner ring arch toward the side close to the silicone ring. Each of the rubber blocks is connected to the storage cavity. Before the object body and the cover body are embedded, the storage cavity between the connecting unit and the cover body is expanded to discharge the air in the rubber block into the storage cavity, so that the rubber block shrinks, and then the wall thickness of the inner ring in the direction A becomes smaller. After the object body and the cover body are connected, the accommodating space of the storage cavity between the connecting unit and the cover body is reduced, and the air in the storage cavity flows into the rubber block, so that the wall thickness of the inner ring in the direction A becomes larger again.

2. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 1, characterized in that: The connection unit comprises a rotating sleeve 1 and a rotating sleeve 2, the centers of the rotating sleeve 1 and the rotating sleeve 2 are collinear and are both arranged along direction A, the rotating sleeve 1 and the rotating sleeve 2 can rotate around the cover body together and can move relatively along direction A, the rotating sleeve 1 is located on a side of the rotating sleeve 2 close to the object body, and the positioning column is fixedly connected to the inside of the rotating sleeve 1.

3. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 2, characterized in that: The object body comprises an inner shell, a blocking plate and a pipe group, the groove and the positioning port are reserved on the outer peripheral wall of the inner shell, the blocking plate is fixedly connected to the inner side of the inner shell, and the pipe group is fixedly connected to the blocking plate; The cover body includes an outer shell and a ring-shaped shell, wherein the ring-shaped shell is fixedly connected to one end inside the outer shell, and the outer end of the outer shell farther from the object body is fixedly connected to a pair of air outlet components in a mirror-image manner. The outer side of the outer shell is also fixedly connected to the inlet and outlet components, and the inlet and outlet components are located between the pair of air outlet components.

4. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 3, characterized in that: One end of the ring-shaped shell close to the blocking plate extends out of the outer shell; when the object body and the cover body are embedded, the inner shell is clamped on the outside of the ring-shaped shell, is in the rotating sleeve, and is tightly pressed with the leak-proof unit clamped on the outer shell.

5. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 4, characterized in that: A circular groove is reserved on the outer circumferential surface of the outer shell, and a barrier sleeve that cooperates with the circular groove in rotation is arranged on the inner circumferential surface of the rotating sleeve 1. The circular groove constrains the rotating sleeve 1 to move along the direction A; the leak-proof unit is hoop-connected to the outer circumferential surface of the outer shell and is located on the side of the circular groove close to the object body, and each is pressed tightly against the barrier sleeve and the wall of the inner shell.

6. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 5, characterized in that: A plurality of escape openings are reserved on the outer side of the outer shell and on the peripheral wall corresponding to the circular ring on the leak-proof unit, and the escape openings are used to receive the expanded rubber blocks.

7. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 6, characterized in that: Each of the rubber blocks is connected with a channel, and each of the channels penetrates the barrier sleeve and is connected with the storage cavity.

8. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 7, characterized in that: The inner shell and the ring-shaped shell cooperate via the socket along the direction A to restrict the rotation of the inner shell and the ring-shaped shell relative to each other.

9. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 8, characterized in that: The rotating sleeve 1 and the rotating sleeve 2 cooperate with each other via the socket along the direction A, so that the rotating sleeve 1 and the rotating sleeve 2 can rotate together and move along the direction A.

10. A heat exchanger for facilitating replacement of heat exchange tubes according to claim 9, characterized in that: A plurality of grooves and positioning openings are reserved on the outer peripheral wall of the inner shell, and a plurality of positioning posts are correspondingly provided on the rotating sleeve.

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