Low-temperature heat treatment device for machine tool parts
By designing a low-temperature heat treatment device for machine tool parts including a low-temperature treatment box, a heating chamber and a cooling chamber, the problem of cumbersome operation and part impact in the prior art is solved, and efficient low-temperature heat treatment and cooling of parts are achieved.
Patent Information
- Application Number
- CN202421780904.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The low-temperature tempering treatment methods for existing machine tool parts are cumbersome to operate, and it is impossible to achieve integrated synchronous processing. Moreover, parts impacts are prone to deformation or damage during large batches of parts processing.
A low-temperature heat treatment device for machine tool parts is designed, including a low-temperature treatment box, a heating chamber, a cooling chamber one and a cooling chamber two. By combining sealed insulation doors, temperature sensors, heaters and cooling systems, low-temperature heat treatment and efficient cooling of parts are achieved.
This device allows machine tool parts to be directly cooled after low temperature treatment, while allowing new parts to be placed again during the cooling process for processing, improving the efficiency of parts processing and preventing parts from contact damage.
Smart Images
Figure CN222975248U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machine tool part processing, and particularly relates to a low-temperature heat treatment device for machine tool parts. Background Technique
[0002] Low-temperature tempering is also called stress-relieving tempering. The tempering temperature range is 150 - 250 degrees Celsius. The structure after tempering is tempered martensite. Tempering is generally not used alone and is carried out after the part is quenched. The main purpose is to eliminate the quenching stress. On machine tools, gears and bearings are essential parts. They need to have high hardness and strength, and at the same time have a certain degree of toughness and corrosion resistance. Low-temperature tempering treatment can improve their hardness and strength, and at the same time improve their toughness and corrosion resistance, making them more durable. The following problems exist in the prior art:
[0003] After the low-temperature tempering treatment of machine tool parts, the existing method requires the machine tool parts to be taken out first, and then air cooling or oil cooling is adopted centrally to quickly reduce the temperature of the steel to room temperature. The operation steps are relatively cumbersome and cannot achieve integrated synchronous processing, which affects the processing efficiency of machine tool parts. At the same time, for the existing low-temperature heating furnace used for low-temperature heat treatment, when processing a large number of machine tool gears, bearings and other parts, it is very difficult to place several gears and bearings well, resulting in the problem that during the low-temperature cooling process, collisions will occur between steel parts such as gears or bearings, causing deformation or damage to the parts. Content of the Utility Model
[0004] The utility model provides a low-temperature heat treatment device for machine tool parts to solve the problems raised in the above background technique.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A low-temperature heat treatment device for machine tool parts, comprising a low-temperature treatment box. A sealed heat-insulating door is arranged on the front side of the low-temperature treatment box. A temperature sensor is arranged on the left side of the low-temperature treatment box. The low-temperature treatment box is provided with a heating chamber, a first cooling chamber, and a second cooling chamber. The first cooling chamber is located above the heating chamber, and the second cooling chamber is located below the heating chamber. The sealed heat-insulating door is movably installed on the front side of the heating chamber. A through square groove one penetrating through to the inner cavity of the second cooling chamber is opened at the bottom of the inner wall of the heating chamber. A through square groove two penetrating through to the inner cavity of the heating chamber is opened at the bottom of the first cooling chamber. A sealed square plate one is clamped inside the through square groove one. A sealed top plate is clamped inside the through square groove two. Two connecting rods one are fixedly connected to the front side between the bottom of the sealed top plate and the top of the sealed square plate one. Two connecting rods two are fixedly installed on the front side of the bottom of the sealed square plate one. A sealed square plate two is fixedly installed at the bottom of the two connecting rods two. A motor is fixedly installed on the left side of the top of the low-temperature treatment box. The output shaft of the motor penetrates into the inner cavity of the first cooling chamber and is fixedly installed with a threaded long rod. The bottom end of the threaded long rod penetrates through the inner circles of the through square groove two and the through square groove one and is movably connected to the bottom of the inner wall of the second cooling chamber. The sealed top plate, the sealed square plate one, and the sealed square plate two are all threadedly connected to the outer wall of the threaded long rod. Part storage mechanisms are arranged on the tops of the sealed square plate one and the sealed square plate two.
[0007] A further improvement of the technical solution of the present utility model lies in that: A limiting rod is fixedly installed on the right side of the top of the inner wall of the first cooling chamber. The bottom end of the limiting rod penetrates through the through square groove two and the inner circle of the sealed square plate one and is fixedly connected to the bottom of the inner wall of the second cooling chamber. The sealed top plate, the through square groove two, and the sealed square plate two are all slidably connected to the outer wall of the limiting rod.
[0008] A further improvement of the technical solution of the present utility model lies in that: A heater is fixedly installed on the rear side of the low-temperature treatment box. The heater is located on the rear side of the heating chamber. The output end of the heater penetrates into the inner cavity of the heating chamber and is fixedly installed with two rows of L-shaped heating tubes arranged in left-right mirror symmetry.
[0009] A further improvement of the technical solution of the present utility model lies in that: Both of the two part storage mechanisms include fixed long plates. The two fixed long plates are respectively fixedly connected to the tops of the sealed square plate one and the sealed square plate two. A chute one is opened at the top of the fixed long plate. A sliding rod one is fixedly connected between the front and rear sides of the inner wall of the chute one. A moving plate is slidably connected to the outer wall of the sliding rod one. An L-shaped pulling plate is fixedly installed above the front side of the moving plate. A pulling plate is arranged above the L-shaped pulling plate. A chute two is opened at the bottom of the pulling plate. A sliding rod two is fixedly connected between the front and rear sides of the inner wall of the chute two. The vertical part of the L-shaped pulling plate is slidably connected to the outer wall of the sliding rod two.
[0010] A further improvement of the technical solution of the present utility model lies in that: a plurality of part placement grooves are arranged in a rectangular array at the top of the draw-out plate.
[0011] A further improvement of the technical solution of the present utility model lies in that: air outlet grooves penetrating through the right side of the low-temperature treatment box are respectively arranged on the right inner walls of the first cooling chamber and the second cooling chamber. Air outlet woven guard plates are fixedly installed on the inner circles of the two air outlet grooves. Intake rings are fixedly installed on the upper and lower sides at the left end of the low-temperature treatment box. The two intake rings are respectively communicated with the inner cavities of the first cooling chamber and the second cooling chamber. Intake metal filters are fixedly installed on the inner circles of the two intake rings. Heat dissipation motors are fixedly installed at the centers on the left sides of the two intake metal filters. The output shafts of the two heat dissipation motors respectively penetrate to the right sides of the two intake metal filters and are fixedly installed with rotating fan blades.
[0012] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:
[0013] 1. The present utility model provides a low-temperature heat treatment device for machine tool parts. Through the mutual cooperation among the heating chamber, the first cooling chamber, the second cooling chamber, the first sealing square plate, the sealing top plate, and the second sealing square plate, the machine tool parts after low-temperature treatment can be directly cooled, and at the same time, new machine tool parts can be placed again for low-temperature treatment during the cooling process, thereby greatly improving the processing efficiency of the machine tool parts.
[0014] 2. The present utility model provides a low-temperature heat treatment device for machine tool parts. Through the mutual cooperation between a plurality of part placement grooves arranged at the top of the draw-out plate and the draw-out plate capable of achieving the draw-out effect, the machine tool parts during low-temperature treatment are prevented from contacting each other, ensuring the quality of the parts and facilitating the removal of the parts from the heating chamber. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is an overall schematic diagram of the structure of the present utility model;
[0016] Figure 2 is an internal schematic diagram of the low-temperature treatment box of the structure of the present utility model;
[0017] Figure 3 is a sectional schematic diagram of the heating chamber of the structure of the present utility model;
[0018] Figure 4 is a bottom view schematic diagram of the part storage mechanism of the structure of the present utility model;
[0019] Figure 5 is a top view schematic diagram of the draw-out plate of the structure of the present utility model;
[0020] Figure 6 is an internal schematic diagram of the first cooling chamber and the second cooling chamber of the structure of the present utility model.
[0021] In the figure: 1. Low-temperature treatment box; 11. Heating chamber; 111. First through square groove; 112. First sealing square plate; 113. First connecting rod; 114. Second connecting rod; 12. First cooling chamber; 121. Second through square groove; 122. Sealing top plate; 13. Second cooling chamber; 131. Second sealing square plate; 14. Part storage mechanism; 141. Fixed long plate; 142. First sliding groove; 143. First sliding rod; 144. Moving plate; 145. L-shaped pulling plate; 146. Pulling plate; 1461. Part placement groove; 147. Second sliding groove; 148. Second sliding rod; 15. Motor; 151. Threaded long rod; 16. Limit rod; 17. Heater; 171. L-shaped heating pipe; 18. Air outlet groove; 181. Air outlet braided guard; 19. Air inlet ring; 191. Air inlet metal filter; 192. Heat dissipation motor; 193. Rotating fan blade; 2. Sealed heat preservation door; 3. Temperature sensor. Specific embodiments
[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] Such as Figure 1 , Figure 2 , Figure 3As shown in the figure, the utility model provides a low-temperature heat treatment device for machine tool parts, including a low-temperature treatment box 1. A sealed heat-insulating door 2 is arranged on the front side of the low-temperature treatment box 1. A temperature sensor 3 is arranged on the left side of the low-temperature treatment box 1. The low-temperature treatment box 1 is provided with a heating chamber 11, a first cooling chamber 12, and a second cooling chamber 13. The first cooling chamber 12 is located above the heating chamber 11, and the second cooling chamber 13 is located below the heating chamber 11. The sealed heat-insulating door 2 is movably installed on the front side of the heating chamber 11. A through square groove 111 penetrating through the inner cavity of the second cooling chamber 13 is arranged at the bottom of the inner wall of the heating chamber 11. A through square groove 121 penetrating through the inner cavity of the heating chamber 11 is arranged at the bottom of the first cooling chamber 12. A sealed square plate 112 is clamped inside the through square groove 111. A sealed top plate 122 is clamped inside the through square groove 121. Two connecting rods 113 are fixedly connected to the front side between the bottom of the sealed top plate 122 and the top of the sealed square plate 112. Two connecting rods 114 are fixedly installed on the front side of the bottom of the sealed square plate 112. Two connecting rods 114 are fixedly installed at the bottom of the sealed square plate 131. A motor 15 is fixedly installed on the left side of the top of the low-temperature treatment box 1. The output shaft of the motor 15 penetrates into the inner cavity of the first cooling chamber 12 and is fixedly installed with a threaded long rod 151. The bottom end of the threaded long rod 151 penetrates through the inner circles of the through square groove 121 and the through square groove 111 and is movably connected to the bottom of the inner wall of the second cooling chamber 13. The sealed top plate 122, the sealed square plate 112, and the sealed square plate 131 are all threadedly connected to the outer wall of the threaded long rod 151. Parts storage mechanisms 14 are arranged on the tops of the sealed square plate 112 and the sealed square plate 131. A limiting rod 16 is fixedly installed on the right side of the top of the inner wall of the first cooling chamber 12. The bottom end of the limiting rod 16 penetrates through the inner circles of the through square groove 121 and the sealed square plate 112 and is fixedly connected to the bottom of the inner wall of the second cooling chamber 13. The sealed top plate 122, the through square groove 121, and the sealed square plate 131 are all slidably connected to the outer wall of the limiting rod 16. A heater 17 is fixedly installed on the rear side of the low-temperature treatment box 1. The heater 17 is located behind the heating chamber 11. The output end of the heater 17 penetrates into the inner cavity of the heating chamber 11 and is fixedly installed with two rows of L-shaped heating tubes 171 arranged in a left-right mirror image;
[0024] When heating, the heater 17 can be started to make the L-shaped heating tube 171 in the inner cavity of the heating chamber 11 generate heat, and the temperature in the inner cavity of the heating chamber 11 is observed according to the temperature sensor 3. After reaching the specified temperature, the heating of the heater 17 is stopped. By using the combined sealing and heat preservation door 2, a heat preservation state is formed in the inner cavity of the heating chamber 11. After the low-temperature heat treatment is completed, the motor 15 can be started to drive the threaded long rod 151 to rotate, so that the sealing top plate 122, the first sealing square plate 112, and the second sealing square plate 131 that are threadedly connected to it rise synchronously by means of the connection of the first connecting rod 113 and the second connecting rod 114. When the sealing top plate 122 rises to the top of the inner cavity of the first cooling chamber 12, the first sealing square plate 112 will be clamped with the through square groove 121, and the parts contained in the part storage mechanism 14 will be in the inner cavity of the first cooling chamber 12. The second sealing square plate 131 can be clamped into the through square groove 111 after rising, and the part storage mechanism 14 on the top of the second sealing square plate 131 will be in the inner cavity of the heating chamber 11. While the parts on the top of the first sealing square plate 112 are dissipating heat, the sealing and heat preservation door 2 can be opened, and new parts can be placed in the part storage mechanism 14 on the second sealing square plate 131 for heating. After heating, the parts on the first sealing square plate 112 in the inner cavity of the first cooling chamber 12 are also cooled. The motor 15 can be started to drive the threaded long rod 151 to reverse, so that the first sealing square plate 112 falls back into the inner cavity of the heating chamber 11 again, and the parts on the second sealing square plate 131 that are heated for the second time can enter the inner cavity of the second cooling chamber 13 for cooling, so as to take out the parts on the first sealing square plate 112 and put in new parts for heating again, and so on, to realize the efficient cooling and heating work of the machine tool parts.
[0025] As Figure 4 , Figure 5 shown, both part storage mechanisms 14 include fixed long plates 141. The two fixed long plates 141 are respectively fixedly connected to the tops of the first sealing square plate 112 and the second sealing square plate 131. A first chute 142 is opened at the top of the fixed long plate 141. A first sliding rod 143 is fixedly connected between the front and rear sides of the inner wall of the first chute 142. A moving plate 144 is slidably connected to the outer wall of the first sliding rod 143. An L-shaped pulling plate 145 is fixedly installed above the front side of the moving plate 144. A pulling plate 146 is arranged above the L-shaped pulling plate 145. A second chute 147 is opened at the bottom of the pulling plate 146. A second sliding rod 148 is fixedly connected between the front and rear sides of the inner wall of the second chute 147. The vertical part of the L-shaped pulling plate 145 is slidably connected to the outer wall of the second sliding rod 148. A plurality of part placement slots 1461 are arranged in a rectangular array at the top of the pulling plate 146;
[0026] When picking up and placing machine tool parts, affected by cooling, gloves can be directly worn to pull out the pull-out plate 146. Under the sliding action of the L-shaped pull plate 145 perpendicular to the second slide bar 148 and the outer wall of the first slide bar 143 by the moving plate 144, the overall pull-out plate 146 can be pulled out of the inner cavity of the heating chamber 11, facilitating the placement or removal of parts one by one from the part placement groove 1461. At the same time, the separated machine tool parts can be well placed to avoid contact collision during cryogenic treatment.
[0027] As Figure 6 shown, on the right side inner walls of both the first cooling chamber 12 and the second cooling chamber 13, air outlet grooves 18 penetrating through to the right side of the cryogenic treatment box 1 are provided. Inside the inner circles of the two air outlet grooves 18, air outlet woven guard plates 181 are fixedly installed. On the upper and lower sides at the left end of the cryogenic treatment box 1, air inlet rings 19 are fixedly installed. The two air inlet rings 19 are respectively communicated with the inner cavities of the first cooling chamber 12 and the second cooling chamber 13. Inside the inner circles of the two air inlet rings 19, air inlet metal filter meshes 191 are fixedly installed. At the left center of the two air inlet metal filter meshes 191, heat dissipation motors 192 are fixedly installed. The output shafts of the two heat dissipation motors 192 respectively penetrate to the right sides of the two air inlet metal filter meshes 191 and are fixedly installed with rotating fan blades 193.
[0028] When parts on the first sealing square plate 112 or the second sealing square plate 131 enter the inner cavities of the first cooling chamber 12 or the second cooling chamber 13, by starting the two heat dissipation motors 192, the two rotating fan blades 193 are driven to rotate at high speed inside the two air inlet rings 19. After filtering large particle impurities from the external air through the air inlet metal filter meshes 191, the air is blown into the inner cavities of the first cooling chamber 12 or the second cooling chamber 13, and the heat is quickly blown out through the air outlet woven guard plates 181 installed inside the inner circles of the air outlet grooves 18, improving the cooling speed of the machine tool parts.
[0029] Next, the working principle of this machine tool part cryogenic heat treatment device will be specifically described.
[0030] As Figures 1-6As shown in the figure, when heating, the heater 17 can be started to make the L-shaped heating tube 171 in the inner cavity of the heating chamber 11 generate heat, and the temperature sensor 3 is used to observe the temperature in the inner cavity of the heating chamber 11. After reaching the specified temperature, the heating of the heater 17 is stopped. By using the combined sealing and heat preservation door 2, a heat preservation state is formed in the inner cavity of the heating chamber 11. After the low-temperature heat treatment is completed, the motor 15 can be started to drive the threaded long rod 151 to rotate, so that the sealing top plate 122, the first sealing square plate 112, and the second sealing square plate 131 that are threadedly connected to it rise synchronously by means of the connection of the first connecting rod 113 and the second connecting rod 114. When the sealing top plate 122 rises to the top of the inner cavity of the first cooling chamber 12, the first sealing square plate 112 will be clamped with the through square groove 121, and the parts contained in the part storage mechanism 14 will be in the inner cavity of the first cooling chamber 12. The second sealing square plate 131 can be clamped into the through square groove 111 after rising, and the part storage mechanism 14 on the top of the second sealing square plate 131 will be in the inner cavity of the heating chamber 11. When the parts on the top of the first sealing square plate 112 dissipate heat, the sealing and heat preservation door 2 can be opened, and new parts can be placed in the part storage mechanism 14 on the second sealing square plate 131 for heating. After heating, the parts on the first sealing square plate 112 in the inner cavity of the first cooling chamber 12 are also cooled. The motor 15 can be started to drive the threaded long rod 151 to reverse, so that the first sealing square plate 112 falls back into the inner cavity of the heating chamber 11 again, and the parts on the second sealing square plate 131 that are heated for the second time can enter the inner cavity of the second cooling chamber 13 for cooling. Thus, the parts on the first sealing square plate 112 are taken out and new parts are put in for heating again, and so on, to realize the efficient cooling and heating work of the machine tool parts. When taking and placing the machine tool parts, affected by the cooling, the pull-out plate 146 can be directly pulled out by wearing gloves. Under the sliding action of the vertical part of the L-shaped pull plate 145 and the second slide bar 148, and the sliding of the moving plate 144 and the outer wall of the first slide bar 143, the whole pull-out plate 146 can be pulled out of the inner cavity of the heating chamber 11, which is convenient for placing or taking out the parts one by one from the part placement groove 1461. When the parts on the first sealing square plate 112 or the second sealing square plate 131 enter the inner cavity of the first cooling chamber 12 or the second cooling chamber 13, by starting the two heat dissipation motors 192, the two rotating fan blades 193 are driven to rotate at high speed in the two intake rings 19. After filtering the large-particle impurities from the external air through the intake metal filter screen 191, the air is blown into the inner cavity of the first cooling chamber 12 or the second cooling chamber 13, and the heat is quickly blown out from the air outlet woven guard plate 181 installed in the inner ring of the air outlet groove 18, so as to improve the cooling speed of the machine tool parts.
[0031] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A low temperature heat treatment device for machine tool parts, comprising a low temperature treatment box (1), characterized in that: The low temperature treatment box (1) is provided with a sealed heat-insulating door (2) on the front side, and a temperature sensor (3) is provided on the left side of the low temperature treatment box (1). The low temperature treatment box (1) is provided with a heating chamber (11), a cooling chamber 1 (12), and a cooling chamber 2 (13). The cooling chamber 1 (12) is located above the heating chamber (11), and the cooling chamber 2 (13) is located below the heating chamber (11). The sealed heat-insulating door (2) is movably mounted on the front side of the heating chamber (11). On the side, the bottom of the inner wall of the heating chamber (11) is provided with a through square groove (111) penetrating to the inner cavity of the second cooling chamber (13), the bottom of the first cooling chamber (12) is provided with a through square groove (121) penetrating to the inner cavity of the heating chamber (11), the inner circle of the through square groove (111) is clamped with a sealing square plate (112), the inner circle of the through square groove (121) is clamped with a sealing top plate (122), the bottom of the sealing top plate (122) is clamped with the sealing square plate (112), and the bottom of the sealing top plate (122) is clamped with the sealing square plate (112). Two connecting rods (113) are fixedly connected to the front side of the top of the plate (112), two connecting rods (114) are fixedly installed on the front side of the bottom of the sealing square plate (112), and the bottom of the two connecting rods (114) is fixedly installed with a sealing square plate (131), and a motor (15) is fixedly installed on the left side of the top of the low-temperature treatment box (1), and the output shaft of the motor (15) passes through the inner cavity of the cooling chamber (12) and is fixedly installed with a threaded long The rod (151) has a bottom end that passes through the inner ring of the second square groove (121) and the first square groove (111) and is movably connected to the bottom of the inner wall of the second cooling chamber (13); the sealing top plate (122), the first sealing square plate (112) and the second sealing square plate (131) are all threadedly connected to the outer wall of the threaded rod (151); and the tops of the first sealing square plate (112) and the second sealing square plate (131) are both provided with a parts storage mechanism (14).
2. A low temperature heat treatment device for machine tool parts according to claim 1, characterized in that: A limiting rod (16) is fixedly installed on the right side of the top of the inner wall of the cooling chamber one (12); the bottom end of the limiting rod (16) passes through the inner circle of the through square groove two (121) and the sealing square plate one (112) and is fixedly connected to the bottom of the inner wall of the cooling chamber two (13); the sealing top plate (122), the through square groove two (121) and the sealing square plate two (131) are all slidably connected to the outer wall of the limiting rod (16).
3. A low temperature heat treatment device for machine tool parts according to claim 1, characterized in that: A heater (17) is fixedly installed on the rear side of the low-temperature treatment box (1), and the heater (17) is located on the rear side of the heating chamber (11). The output end of the heater (17) passes through the inner cavity of the heating chamber (11) and is fixedly installed with two rows of L-shaped heating pipes (171) arranged in a left and right mirror image.
4. A low temperature heat treatment device for machine tool parts according to claim 1, characterized in that: The two parts storage mechanisms (14) each include a fixed long plate (141), the two fixed long plates (141) are respectively fixedly connected to the top of the sealing square plate 1 (112) and the sealing square plate 2 (131), a slide groove 1 (142) is provided on the top of the fixed long plate (141), a slide rod 1 (143) is fixedly connected between the front and rear sides of the inner wall of the slide groove 1 (142), and a movable slide rod 1 (143) is slidably connected to the outer wall of the slide rod 1 (143). The movable plate (144) is provided with an L-shaped pull plate (145) fixedly mounted on the upper front side of the movable plate (144), a pull-out plate (146) is arranged on the upper side of the L-shaped pull plate (145), a slide groove (147) is provided at the bottom of the pull-out plate (146), a slide rod (148) is fixedly connected between the front and rear sides of the inner wall of the slide groove (147), and a vertical part of the L-shaped pull plate (145) is slidably connected to the outer wall of the slide rod (148).
5. A low temperature heat treatment device for machine tool parts according to claim 4, characterized in that: A plurality of parts placement slots (1461) are provided in a rectangular array on the top of the pull-out plate (146).
6. A low temperature heat treatment device for machine tool parts according to claim 1, characterized in that: The right sides of the inner walls of the cooling chamber 1 (12) and the cooling chamber 2 (13) are each provided with an air outlet groove (18) extending through the right side of the low-temperature treatment box (1); the inner circles of the two air outlet grooves (18) are each fixedly installed with an air outlet braided protective plate (181); the left end of the low-temperature treatment box (1) is fixedly installed with an air intake ring (19) on both upper and lower sides; the two air intake rings (19) are respectively connected to the inner cavities of the cooling chamber 1 (12) and the cooling chamber 2 (13); the inner circles of the two air intake rings (19) are each fixedly installed with an air intake metal filter (191); a heat dissipation motor (192) is fixedly installed at the center of the left side of the two air intake metal filters (191); the output shafts of the two heat dissipation motors (192) respectively extend through the right sides of the two air intake metal filters (191) and are fixedly installed with rotating fan blades (193).