Vacuum tube furnace cooling device

Abstract

This invention provides a vacuum tube furnace cooling device, belonging to the field of vacuum tube furnace technology. It includes a protective cylinder, an exhaust hood, blades, and a screen. A second fixing ring is fixedly connected to the lower wall of the protective cylinder, and a fastening block is screwed onto the second fixing ring. A first fixing ring is installed on the lower wall of the second fixing ring, and the exhaust hood is fixedly connected to the lower wall of the first fixing ring. A screen is fixedly connected to one end of the protective cylinder adjacent to the rotating rod. This invention solves the problem that existing vacuum tube furnace cooling devices utilize partially blown gas extending from the furnace body for heat dissipation and cooling. During the gas blowing process, impurities from the surrounding environment accumulate inside the cooling device, making it difficult to maintain a stable gas volume and pressure, increasing maintenance costs, and hindering energy conservation.

Description

Technical fields:

[0001] This invention belongs to the field of vacuum tube furnace technology, and specifically relates to a vacuum tube furnace cooling device. Background technology:

[0002] Vacuum tube furnaces are instruments used in laboratories, industrial and mining enterprises, and research units for elemental analysis and determination, as well as for quenching, annealing, tempering of general small steel parts and heating of new materials such as electronic ceramics. As an industrial equipment, vacuum furnaces have a wide range of applications in the heat treatment, processing, preparation, sintering, welding and coating of materials. When a vacuum furnace is working, the heating element heats the furnace body, and a large amount of heat is generated inside the furnace. If heat dissipation is not timely, it will shorten the service life of the furnace body and may cause burns to the users.

[0003] Existing technology CN215113981U discloses a low-vacuum tube furnace, including a frame; an atmosphere furnace mounted above the frame, including a casing with a receiving groove and a furnace body for receiving raw materials, with at least one side of the furnace body extending into the receiving groove; a heating element for heating at least part of the furnace body; and an electrical control box connected to and controlling the heating element. The low-vacuum tube furnace also includes a heat dissipation element disposed above the side of the furnace body extending into the receiving groove. This device utilizes a portion of the gas blown into the vacuum tube furnace to cool the furnace body. During the gas blowing process, impurities from the surrounding environment accumulate in the cooling device, making it difficult to maintain a stable gas volume and pressure, increasing maintenance costs and hindering energy conservation. Summary of the Invention:

[0004] This invention provides a vacuum tube furnace cooling device, which aims to solve the problem that existing vacuum tube furnace cooling devices use a portion of the gas extended from the furnace body to cool it. During the gas blowing process, impurities in the surrounding environment of the vacuum tube furnace accumulate in the cooling device, making it difficult to maintain a stable gas volume and pressure, increasing the maintenance cost of the device, and hindering energy conservation.

[0005] This invention provides a vacuum tube furnace cooling device, comprising a protective cylinder, an exhaust hood, blades, and a sieve. The vacuum tube furnace is mounted on the left end of the protective cylinder, and a furnace body is mounted on the vacuum tube furnace. The protective cylinder is positioned above the side of the furnace body extending beyond the vacuum tube furnace. A second fixing ring is fixedly connected to the lower wall of the protective cylinder, and a fastening block is screwed onto the second fixing ring. A spiral protrusion is fixedly connected to the outer wall of the fastening block. A first fixing ring is mounted on the lower wall of the second fixing ring, and the first and second fixing rings are fixedly connected via the fastening block. The exhaust hood is fixedly connected to the lower wall of the first fixing ring. A sieve is fixedly connected to one end of the protective cylinder adjacent to a rotating rod. A blade is fixed to the rod, and the blade is located inside the screen plate. A fastening block one connects the second fixing ring to the first fixing ring through one end of the second fixing ring. A disc one is fixed to the end of the fastening block one adjacent to the second fixing ring. Evenly distributed protrusions are fixed to the rim of the disc one. A ring block one is installed outside the protective cylinder. Several fixing plates are fixed to the outside of the ring block one. Several scraper arms are fixed to the end of the ring block one adjacent to the screen plate. The scraper arms and the screen plate can move and touch each other. A telescopic unit is installed on the ring block one. A ring block three is screwed onto the telescopic unit. The protrusions on the outer edge of the ring block three can engage with the protrusions of several discs one at the same time.

[0006] Furthermore, the telescopic unit includes a sleeve, which is installed outside the protective cylinder. One end of the sleeve is fixedly connected to the ring block, and the sleeve and the ring block are coaxially installed.

[0007] Furthermore, a second ring block is installed on the outer wall of the sleeve, and the second ring block and the sleeve are movably connected. The position of the second ring block on the sleeve varies along the straight line where the upper and lower bottom centers of the sleeve are located.

[0008] Furthermore, a third ring is installed at the end of the second ring that is close to the second fixed ring. The outer edge of the third ring is fixed with evenly distributed protrusions. The third ring and the second ring are screwed together. The third ring and the sleeve are coaxially installed. The disc is located at the end of the third ring that is close to the second fixed ring.

[0009] Furthermore, several insertion slots are reserved on the second ring block. The inner wall of each insertion slot has a spiral-shaped protrusion. Each insertion slot is arranged on the second ring block. A fastening block two is screwed into each insertion slot. The fastening block two consists of a head and a cylindrical tail. The outer wall of the cylinder is fixed with a spiral-shaped protrusion. The tail of the fastening block two is fixed with a post. The lower wall of the post is rough and is in contact with the upper wall of the third ring block.

[0010] Furthermore, the telescopic unit includes several fixed seats mounted on the first ring block. The fixed seat is fixedly connected to one end of the first ring block that is close to the second fixed ring. The fixed seats are evenly distributed on the first ring block. The second disc is screwed to the end of the fixed seat that is farther away from the first ring block. A protrusion is fixedly connected to the edge of the second disc. A linkage block is fixedly connected to the second disc. The other end of the linkage block is fixedly connected to a balance block.

[0011] Furthermore, the telescopic unit includes several U-shaped blocks installed on the sleeve, the U-shaped blocks being fixedly connected to the outer wall of the sleeve, a spiral beryllium copper wire being fixedly connected to the linkage block, and the other end of the spiral beryllium copper wire being fixedly connected to the U-shaped block.

[0012] Furthermore, a guide rail is movably connected to the U-shaped block, and the guide rail has evenly distributed protrusions. The guide rail and the second ring block are fixedly connected, and the included angle between the guide rail and the second ring block is 90°. The protrusions on the guide rail and the protrusions on the second disc engage with each other.

[0013] Furthermore, the fastening blocks are evenly arranged on the second fixing ring, and the adjacent ends of the second fixing ring and the first fixing ring are reserved with placement grooves. The openings of a pair of placement grooves are opposite each other, and an oil seal is installed in the placement groove.

[0014] Furthermore, the outer wall surface of the first ring block and the outer wall surface of the protective cylinder are screwed together, and the fixing plate and the scraper arm are evenly arranged on the first ring block.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. In this invention, the cooling device rotates the blades via an activation mechanism, and the blown gas passes through the screen from the outside in. Impurities in the blown gas are removed by the screen, and the removed impurities accumulate on the outer side of the screen. The blown gas then passes through a fixed plate, and the rotation of the fixed plate causes the first ring block to rotate. The first ring block causes the scraper arm to run, and the rotating scraper arm scrapes away the impurities accumulated on the outer side of the screen, preventing the screen from affecting the ventilation efficiency due to impurity accumulation. There is no need for the operator to manually scrape the impurities on the screen, so that the amount and pressure of the gas blown by the cooling device can be kept stable, thus saving energy. The gas blown by the cooling device cools the furnace body of the vacuum tube furnace below, extending the service life of the furnace body and helping to prevent burns to the user.

[0017] 2. In this invention, the rotation of the first ring causes the fixed seat and the sleeve to rotate. The fixed seat, via the second disc and the linkage block, causes the balance block to rotate. The balance block moves to a position farther from the sleeve, pulling the linkage block to a position farther from the U-shaped block. As the linkage block moves further away from the U-shaped block, it causes the second disc to rotate. The protrusions on the outer edge of the second disc and the protrusions on the guide rail engage with each other. The rotation of the second disc causes the guide rail to move to a position farther from the first ring, pushing the second ring closer to the second fixed ring. The second ring pushes the third ring towards the first disc until the first disc and the third ring engage. A long strip-shaped protrusion is fixed to the sleeve, causing the second ring to rotate with the rotation of the sleeve. The second ring causes the third ring to rotate, pulling the second fastening block closer to the insertion post, thus tightening it. The tail of block two pushes the insert into block three to adjust the magnitude of the force that hinders the relative movement between block three and the insert. This interaction force causes block two to cause block three to rotate, which in turn causes the disc one it is engaged with to rotate. Fastening block one rotates with disc one, and the fastening block one makes the second fixing ring fit against the first fixing ring. This prevents the fit between the second fixing ring and the outer convex ring four from weakening during the operation of the cooling device, and strengthens the fit between the protective cylinder and the vent hood. This prevents moisture and impurities in the gas from entering the protective cylinder to maintain the cooling device. When disc one can no longer rotate, disc one causes block three and block two to rotate to ensure that disc one reinforces the second fixing ring and the first fixing ring, thus maintaining the fit between the protective cylinder and the vent hood.

[0018] 3. In this invention, when the cooling device is turned off, the blades stop rotating, no gas passes through the fixed plate, and the balance block moves to the side closer to the U-shaped block. Utilizing the elastic deformation of the spiral beryllium copper wire, the linkage block causes the balance block and the second disc to return to their original shape. The rotation of the second disc causes the guide rail to move to the end closer to the first ring block. The guide rail pulls the second ring block to the end farther from the second fixed ring, so that the first fastening block can be removed to maintain the cooling device.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached image description:

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2This is a schematic diagram of the cooling device according to an embodiment of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the cooling device according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged schematic diagram at point M;

[0025] Figure 5 This is a schematic diagram of the sleeve structure in an embodiment of the present invention.

[0026] Reference numerals: 101, Protective cylinder; 102, Exhaust hood; 103, Second fixing ring; 104, First fixing ring; 105, Oil seal; 106, Placement groove; 107, Fastening block one; 108, Disc one; 109, Blade; 110, Ring block one; 111, Fixing plate; 112, Scraper arm; 113, Screen plate; 114, Sleeve; 115, Fixing seat; 116, Disc two; 117, Linkage block; 118, Balance block; 119, U-shaped block; 120, Guide rail; 121, Ring block two; 122, Ring block three; 123, Fastening block two; 124, Insert column; 125, Spiral beryllium copper wire; 126, Vacuum tube furnace; 127, Furnace body. Detailed implementation method:

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Reference Figure 1-5This invention provides a vacuum tube furnace cooling device, comprising a protective cylinder 101, an exhaust hood 102, blades 109, and a sieve 113. A vacuum tube furnace 126 is mounted on the left end of the protective cylinder 101, and a furnace body 127 is mounted on the vacuum tube furnace 126. The protective cylinder 101 is positioned above the side of the furnace body 127 extending from the vacuum tube furnace 126. A second fixing ring 103 is fixedly connected to the lower wall of the protective cylinder 101. Fastening block 107 is screwed onto the second fixing ring 103. A spiral protrusion is fixed to the outer wall of fastening block 107. A first fixing ring 104 is mounted on the lower wall of the second fixing ring 103. The first fixing ring 104 and the second fixing ring 103 are fixedly connected via fastening block 107. An air vent 102 is fixed to the lower wall of the first fixing ring 104. A screen plate 113 is fixed to one end of the protective cylinder 101 adjacent to the rotating rod. A blade 109 is fixedly connected to the rotating rod, and the blade 109 is located inside the sieve plate 113. A fastening block 107 connects the second fixing ring 103 to the first fixing ring 104 via one end of the second fixing ring 103. A disc 108 is fixedly connected to the adjacent end of the fastening block 107 and the second fixing ring 103. Evenly distributed protrusions are fixedly connected to the rim of the disc 108. A ring is installed on the outside of the protective cylinder 101. Block 110, with several fixed plates 111 fixed to its outer side, and several scraper arms 112 fixed to one end of the block 110 adjacent to the sieve plate 113. The scraper arms 112 and the sieve plate 113 can move and touch each other. A telescopic unit is installed on the block 110, and a third block 122 is screwed onto the telescopic unit. The protrusions on the outer edge of the third block 122 can engage with the protrusions of several discs 108 at the same time.

[0029] The telescopic unit includes a sleeve 114, which is installed outside the protective cylinder 101. One end of the sleeve 114 is fixedly connected to the ring block 110, and the sleeve 114 and the ring block 110 are coaxially installed.

[0030] A second ring block 121 is installed on the outer wall of the sleeve 114. The second ring block 121 and the sleeve 114 are movably connected. The position of the second ring block 121 on the sleeve 114 varies along the straight line where the upper and lower bottom centers of the sleeve 114 are located.

[0031] A third ring 122 is installed at the end of the second ring 121 that is close to the second fixing ring 103. The outer edge of the third ring 122 is fixed with evenly distributed protrusions. The third ring 122 and the second ring 121 are screwed together. The third ring 122 and the sleeve 114 are coaxially installed. The first disc 108 is located at the end of the third ring 122 that is close to the second fixing ring 103.

[0032] The second ring block 121 has several pre-drilled holes, and the inner wall of each hole has a spiral-shaped protrusion. The holes are all arranged on the second ring block 121. A fastening block 123 is screwed into each hole. The fastening block 123 consists of a head and a cylindrical tail. The outer wall of the cylinder is fixed with a spiral-shaped protrusion. The tail of the fastening block 123 is fixed with a post 124. The lower wall of the post 124 is rough and is in contact with the upper wall of the third ring block 122.

[0033] The telescopic unit includes several fixed seats 115 mounted on the first ring block 110. The fixed seat 115 is fixedly connected to one end of the first ring block 110 that is close to the second fixed ring 103. The fixed seats 115 are evenly distributed on the first ring block 110. The end of the fixed seat 115 that is farther away from the first ring block 110 is screwed to the second disc 116. A protrusion is fixedly connected to the edge of the second disc 116. A linkage block 117 is fixedly connected to the second disc 116. The other end of the linkage block 117 is fixedly connected to a balance block 118.

[0034] The telescopic unit includes several U-shaped blocks 119 mounted on the sleeve 114. The U-shaped blocks 119 are fixedly connected to the outer wall of the sleeve 114. A spiral beryllium copper wire 125 is fixedly connected to the linkage block 117. The other end of the spiral beryllium copper wire 125 is fixedly connected to the U-shaped block 119.

[0035] The U-shaped block 119 is movably connected to the guide rail 120, which has evenly distributed protrusions. The guide rail 120 and the second ring block 121 are fixedly connected. The angle between the guide rail 120 and the second ring block 121 is 90°. The protrusions on the guide rail 120 and the protrusions on the second disc 116 engage with each other.

[0036] The fastening blocks 107 are evenly arranged on the second fixing ring 103. The adjacent ends of the second fixing ring 103 and the first fixing ring 104 are reserved with placement grooves 106. The openings of the pair of placement grooves 106 are opposite each other, and an oil seal 105 is installed in the placement groove 106.

[0037] The outer wall surfaces of the ring block 110 and the protective cylinder 101 are screwed together, and the fixing plate 111 and the scraper arm 112 are evenly arranged on the ring block 110.

[0038] The specific implementation method is as follows: Before use, the spiral beryllium copper wire 125 is used to pull the balance block 118 to the U-shaped block 119 via the linkage block 117. The second ring block 121 and the third ring block 122 are far away from the first disc 108, so that the third ring block 122 and the second disc 116 do not stick together.

[0039] In use, the cooling device rotates the starter blade 109, and the blown gas passes through the screen 113 from the outside to the inside. Impurities in the blown gas are removed by the screen 113, and the removed impurities accumulate on the outside of the screen 113. The blown gas passes through the fixing plate 111, and the rotation of the fixing plate 111 causes the ring block 110 to rotate. The ring block 110 causes the scraper arm 112 to run. The rotating scraper arm 112 scrapes away the impurities accumulated on the outside of the screen 113, preventing the screen 113 from affecting the ventilation efficiency due to the accumulation of impurities. There is no need for the operator to manually scrape the impurities on the screen 113, so that the amount and pressure of the gas blown by the cooling device can be kept stable, so as to save energy. The gas blown by the cooling device cools the furnace body 127 of the vacuum tube furnace 126 below, extending the service life of the furnace body 127 and helping to prevent burns to the user.

[0040] The rotation of the first ring block 110 causes the fixed seat 115 and the sleeve 114 to rotate. The fixed seat 115, via the second disc 116 and the linkage block 117, causes the balance block 118 to rotate. The balance block 118 moves to a position farther from the sleeve 114. The balance block 118 pulls the linkage block 117 to a position farther from the U-shaped block 119. As the linkage block 117 moves further away from the U-shaped block 119, the linkage block 117 causes the second disc 116 to rotate. The protrusion on the outer edge of the second disc 116 and the guide rail 120... The protrusions interlock, and the rotation of disc 2 116 causes guide rail 120 to shift towards the end furthest from ring block 110. Guide rail 120 pushes ring block 2 121 closer to the second fixing ring 103. Ring block 2 121 pushes ring block 3 122 towards disc 108 until disc 108 and ring block 3 122 interlock. A long strip protrusion is fixed to sleeve 114, which causes ring block 2 121 to rotate with sleeve 114. Ring block 2 121 causes ring block 3 122 to rotate, pushing fastening block 2 123 towards the insertion post 1. As the 24-direction rotation approaches, the tail of the second fastening block 123 pushes the insert 124 towards the third ring block 122, adjusting the magnitude of the force hindering the relative movement between the third ring block 122 and the insert 124. This interaction force causes the second ring block 121 to cause the third ring block 122 to rotate, which in turn causes the first disc 108, which it engages with, to rotate. The first fastening block 107 rotates along with the first disc 108, causing the second fixing ring 103 to adhere to the first fixing ring 104, thus preventing the cooling device from operating. During the process, the fit between the second fixing ring 103 and the outer convex ring 104 weakens, while the fit between the protective cylinder 101 and the vent 102 is strengthened, preventing moisture and impurities in the gas from entering the protective cylinder 101 to maintain the cooling device. When the disc 108 can no longer rotate, the disc 108 causes the ring block 3 122 and the ring block 2 121 to rotate, so as to ensure that the disc 108 reinforces the second fixing ring 103 and the first fixing ring 104, thereby maintaining the fit between the protective cylinder 101 and the vent 102.

[0041] When the cooling device is turned off, the blade 109 stops rotating, and no gas passes through the fixed plate 111. The balance block 118 moves to the side closer to the U-shaped block 119. Utilizing the elastic deformation of the spiral beryllium copper wire 125, the linkage block 117 causes the balance block 118 and the second disk 116 to return to their original positions. The rotation of the second disk 116 causes the guide rail 120 to move to the end closer to the first ring block 110. The guide rail 120 pulls the second ring block 121 to the end farther from the second fixed ring 103, so that the fastening block 107 can be removed to maintain the cooling device.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum tube furnace cooling device, comprising a protective cylinder (101), an exhaust hood (102), blades (109), and a sieve (113), wherein a vacuum tube furnace (126) is mounted on the left end of the protective cylinder (101), a furnace body (127) is mounted on the vacuum tube furnace (126), the protective cylinder (101) is located above the side of the furnace body (127) extending out of the vacuum tube furnace (126), a second fixing ring (103) is fixedly connected to the lower wall of the protective cylinder (101), and a fastening block (107) is screwed onto the second fixing ring (103). A spiral protrusion is fixed to the outer wall of the fastening block (107). A first fixing ring (104) is installed on the lower wall of the second fixing ring (103). The first fixing ring (104) and the second fixing ring (103) are fixedly connected via the fastening block (107). An air vent (102) is fixed to the lower wall of the first fixing ring (104). A screen plate (113) is fixed to one end of the protective cylinder (101) adjacent to the rotating rod. A leaf plate (109) is fixed to the rotating rod. The leaf plate (109) is located inside the screen plate (113). The characteristic of this design is that... The fastening block 1 (107) is fixed to the second fixing ring (104) by one end of the second fixing ring (103). The fastening block 1 (107) and the second fixing ring (103) are adjacent to a disc 1 (108). The disc 1 (108) has evenly distributed protrusions fixed to its rim. A ring block 1 (110) is installed outside the protective cylinder (101). Several fixing plates (111) are fixed to the outside of the ring block 1 (110). Several scraper arms (112) are fixed to the end of the ring block 1 (110) adjacent to the sieve plate (113). The scraper arms (112) and the sieve plate (113) are movably attached to each other. A telescopic unit is installed on the first (110), and a ring block three (122) is screwed onto the telescopic unit. The protrusions on the outer edge of the ring block three (122) can simultaneously engage with the protrusions of several discs one (108). The telescopic unit includes a sleeve (114), which is installed outside the protective cylinder (101). One end of the sleeve (114) is fixedly connected to the ring block one (110). The sleeve (114) and the ring block one (110) are coaxially installed. A ring block two (121) is installed on the outer wall of the sleeve (114). The ring block two (121) and the sleeve (114) are movably connected. The ring block two (121) extends on the sleeve (114). The position of the sleeve (114) changes along the straight line where the center of the upper and lower bottom circles are located. At the end of the second ring block (121) near the second fixing ring (103), a third ring block (122) is installed. The outer edge of the third ring block (122) is fixed with evenly distributed protrusions. The third ring block (122) and the second ring block (121) are screwed together. The third ring block (122) and the sleeve (114) are coaxially installed. The first disc (108) is located at the end of the third ring block (122) near the second fixing ring (103). Several insertion ports are reserved on the second ring block (121). The inner wall of each insertion port has spiral-shaped protrusions. All insertion ports are arranged on the second ring block (121). Fastening block two (123) is screwed into the socket. Fastening block two (123) consists of a head and a cylindrical tail. The outer wall of the cylinder is fixed with a spiral protrusion. The tail of fastening block two (123) is fixed with a plug (124). The lower wall of the plug (124) is rough. The lower wall of the plug (124) is in contact with the upper wall of ring block three (122). Fastening block one (107) is evenly arranged on the second fixing ring (103). The adjacent ends of the second fixing ring (103) and the first fixing ring (104) are reserved with placement grooves (106). The openings of a pair of placement grooves (106) are opposite each other. An oil seal (105) is installed in the placement groove (106).

2. The vacuum tube furnace cooling device according to claim 1, characterized in that, The telescopic unit includes several fixed seats (115) mounted on the first ring block (110). The fixed seat (115) is fixed to one end of the first ring block (110) that is close to the second fixed ring (103). The fixed seats (115) are evenly distributed on the first ring block (110). The fixed seat (115) is screwed to the second disc (116) at the end that is farther away from the first ring block (110). A protrusion is fixed to the edge of the second disc (116). A linkage block (117) is fixed to the second disc (116). The other end of the linkage block (117) is fixed to a balance block (118).

3. The vacuum tube furnace cooling device according to claim 2, characterized in that, The telescopic unit includes several U-shaped blocks (119) installed on the sleeve (114). The U-shaped blocks (119) are fixedly connected to the outer wall of the sleeve (114). A spiral beryllium copper wire (125) is fixedly connected to the linkage block (117). The other end of the spiral beryllium copper wire (125) is fixedly connected to the U-shaped block (119).

4. The vacuum tube furnace cooling device according to claim 3, characterized in that, The U-shaped block (119) is movably connected to a guide rail (120), which has evenly distributed protrusions. The guide rail (120) and the second ring block (121) are fixedly connected. The angle between the guide rail (120) and the second ring block (121) is 90°. The protrusions on the guide rail (120) and the protrusions on the second disc (116) interlock with each other.

5. A vacuum tube furnace cooling device according to claim 1, characterized in that, The outer wall surfaces of the first ring block (110) and the protective cylinder (101) are screwed together, and the fixing plate (111) and the scraper arm (112) are evenly arranged on the first ring block (110).

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