Balanced heating steel ball tempering device

Abstract

The invention relates to the technical field of steel ball tempering, in particular to a balanced heating steel ball tempering device which comprises a box body, a bracket is arranged in an inner cavity of the box body, and a first heating pipe is arranged at the bottom of the inner cavity of the box body; an air inlet cylinder is installed at the top of the box body, a shell is fixedly installed at the bottom of the outer side of the box body, an air supply cylinder is fixedly installed in the shell, one end of the top of the air supply cylinder communicates with the air inlet cylinder, an air guide cylinder is installed at one end of the bottom of the air supply cylinder, and a second heating pipe is fixedly installed in the air supply cylinder; and an air leakage pipe communicated with the inner cavity is mounted at the top of the box body and is communicated with the exhaust funnel. The steel balls are arranged in a layered mode, shielding areas on the surfaces of the steel balls can be completely eradicated, the temperatures of all parts of the inner cavity of the box body are kept consistent by heating inert gas, the steel balls are heated in a balanced mode, and therefore the internal stress of the steel balls is eliminated, the hardness of the steel balls meets the production standard, and the reliability of the steel balls is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball tempering, and in particular discloses a balanced heated steel ball tempering device. Background Art

[0002] Tempering is a relatively mature metal heat treatment process that can be used to improve the mechanical properties of metal materials; steel balls are a kind of rough-processed metal products, mainly used in industrial and mechanical equipment. Steel balls are often used as grinding media in ball mills. They produce grinding and stripping effects through collision and friction between steel balls. They are widely used in power plants and other places. Steel balls generally need to go through early casting, mid-term quenching and tempering, and late cooling treatment during the production process. Among them, mid-term quenching and tempering are the most important. Steel balls can be quenched to significantly improve their hardness, strength, wear resistance and fatigue strength. After quenching, large internal stress will be generated inside the steel balls, which can easily cause deformation and cracking of the steel balls. By tempering the steel balls, the internal stress inside the steel balls can be eliminated or reduced, preventing the steel balls from deformation and cracking during use.

[0003] Steel ball tempering is usually carried out in a tempering furnace. By setting different temperature ranges, tempering can be divided into: low temperature tempering, medium temperature tempering, and high temperature tempering. Since steel balls require higher plasticity and toughness, high temperature tempering is usually required, and the tempering temperature generally needs to be controlled above 600°C. In the actual production process, the operator places all the steel balls in the tempering furnace, and uses electric heating to quickly heat up and keep the tempering furnace warm, thereby implementing the tempering process. The above-mentioned prior art stacks the steel balls and buries them deep in the tempering furnace, so that there is a shielded area on the surface of the steel balls, and the steel balls cannot be heated evenly, resulting in the residual stress of the steel balls still existing, making the hardness higher than expected. If it is used in the later industrial and mechanical processing fields, the steel balls are prone to cracks or even breakage under the action of external forces, causing unpredictable harm. Summary of the invention

[0004] In view of the problem of uneven heating during the current steel ball tempering operation, the present invention provides a steel ball tempering device with even heating.

[0005] To solve the above problems, the present invention provides the following technical solutions: A balanced heated steel ball tempering device comprises a box body, a box door is installed on the front side of the box body, a plurality of vertically distributed brackets are arranged in the inner cavity of the box body, the brackets are used to support and fix the steel balls, a first heating tube is arranged at the bottom of the inner cavity of the box body, and the first heating tube is used to increase the inner cavity temperature of the box body; an air intake cylinder is fixedly installed on the top of the box body, and the inlet end of the air intake cylinder is connected with an inert gas conveyor, a shell is fixedly installed on the outer bottom of the box body, and an air delivery cylinder is fixedly installed in the shell body, one end of the top of the air delivery cylinder is connected with the air intake cylinder, one end of the bottom of the air delivery cylinder is arranged in the inner cavity of the box body and a gas guide cylinder is fixedly installed, the gas guide cylinder is used to deliver the inert gas into the inner cavity of the box body, and a plurality of evenly arranged second heating tubes are fixedly installed inside the air delivery cylinder, and the second heating tube is used to heat the inert gas; an air discharge pipe connected with the inner cavity is installed on the top of the box body, and the air discharge pipe is connected with the exhaust pipe, and the exhaust pipe is used to discharge the inert gas out of the box body.

[0006] Preferably, a plurality of vertically distributed frames are fixedly mounted on the side walls on both sides of the inner cavity of the box body, a first wheel is rotatably mounted on both sides of the bracket, the first wheel is arranged in the frame and slidingly cooperates with the frame, a second wheel is rotatably mounted on one end of the frame close to the box door, the second wheel is arranged at the bottom of the bracket and slidingly cooperates with the bracket; a plurality of penetrating circular grooves are opened on the bracket, the circular grooves are evenly arranged, and the inner groove surfaces of the circular grooves are in contact with the outer walls of the steel balls.

[0007] Preferably, a first heater is fixedly installed on the rear side of the box body, the first heater is electrically connected to the first heating tube, the first heating tube is a U-shaped tube, a plurality of heat-conducting plates are mounted on the periphery of the first heating tube, the heat-conducting plates are evenly arranged, a protective shell is arranged on the periphery of the first heating tube and the heat-conducting plates, the protective shell is tightly connected to the side wall of the inner cavity of the box body, a plurality of heat-transmitting holes are opened on the protective shell, and the heat-transmitting holes are evenly arranged.

[0008] Preferably, the arrangement height of the air inlet end of the air inlet cylinder is higher than the arrangement height of the air outlet end, and a guide cylinder is installed on the air inlet cylinder. A fan frame is rotatably arranged inside the guide cylinder, and a plurality of fan blades are fixedly installed in the fan frame. The fan blades are all obliquely arranged and evenly distributed along the central circumference of the fan frame. A guide hood is fixedly installed on the side of the fan frame, and the guide hood is a frustum-shaped structure. The end of the guide hood with a smaller diameter is tightly connected to the fan frame.

[0009] Preferably, a rotatable shaft is fixedly mounted on the side of the fan frame, the shaft is rotatably matched with the guide tube, one end of the shaft is tightly connected to the side of the fan frame away from the guide cover, and the other end of the shaft is arranged outside the guide tube and above the box body; Preferably, a support frame is fixedly installed on the top of the box, a servo motor is fixedly installed inside the support frame, a first pulley is fixedly installed on the end of the output shaft of the servo motor, a second pulley is mounted on the end of the shaft, and a belt for transmission connection is arranged between the first pulley and the second pulley.

[0010] Preferably, a first connecting tube is fixedly installed on the top of the air delivery tube, the first connecting tube is tightly connected to the bottom port of the air intake tube, and the first connecting tube is a funnel-shaped structure; a second heater is fixedly installed on the side of the shell, and the second heater is electrically connected to each second heating tube.

[0011] Preferably, the air guide cylinder is arranged at the bottom of the bracket, the inner end surface of the air guide cylinder is arranged obliquely and is provided with a plurality of evenly distributed air holes, and the air holes face the bracket.

[0012] Preferably, the air release pipe is a right-angle bend pipe structure, the bottom end of the air release pipe is arranged in the inner cavity of the box, the top end of the air release pipe is fixedly connected with a second connecting tube, the second connecting tube is a funnel-shaped structure, the second connecting tube is tightly connected with a pressure relief tube, the pressure relief tube is fixedly installed on the top of the box, and the top end of the pressure relief tube is tightly connected to the exhaust pipe.

[0013] Preferably, the box door is provided with two doors which are arranged to open and close oppositely, and a locking handle is fixedly installed on the outside of the box door; and a plurality of universal guide wheels are installed on the bottom of the box body.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a bracket to support and fix the steel balls so that the steel balls are not in contact with each other, which can avoid the generation of contact surfaces and facilitate the balanced heating of the steel balls. The first heating tube can be provided to quickly heat and keep the inner cavity of the box. The air supply tube can be provided to send inert gas into the inner cavity of the box, and the inert gas is heated by the second heating tube to keep the inner cavity of the box where the steel balls are located at a constant temperature. On the one hand, it is convenient for the steel balls to be heated evenly, and on the other hand, it can also avoid the generation of oxide layers on the surfaces of the steel balls, thereby improving the production quality of the steel balls. The present invention arranges the steel balls in layers to prevent shielding areas from appearing on the surfaces of the steel balls. By heating the inert gas, the temperatures of various parts of the inner cavity of the box are kept consistent, so that the steel balls are heated evenly, thereby eliminating the internal stress of the steel balls, making the hardness of the steel balls meet the production standards, and ensuring the reliability of the steel balls. Therefore, the present invention has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 The overall structure of the device of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the device of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the bracket structure of the present invention; Figure 4 This is a schematic diagram of the first rotating wheel installation structure of the present invention; Figure 5 It is a schematic diagram of the installation structure of the protective shell of the present invention; Figure 6 It is a schematic diagram of the installation structure of the heat conducting sheet of the present invention; Figure 7 It is a schematic diagram of the arrangement structure of the air intake cylinder of the present invention; Figure 8 It is a schematic diagram of the shaft rod installation structure of the present invention; Fig. 9 It is a schematic diagram of the gas guide cylinder installation structure of the present invention; In the figure: 1. box body, 2. box door, 3. bracket, 4. first heating tube, 5. air inlet pipe, 6. shell, 7. air delivery pipe, 8. universal guide wheel, 9. air guide pipe, 10. second heating tube, 11. exhaust pipe, 12. exhaust pipe, 13. frame, 14. first rotor, 15. second rotor, 16. circular groove, 17. first heater, 18. heat conductive sheet, 19. protective shell, 20. heat-transmitting hole, 21. guide tube, 22. fan frame, 23. fan blade, 24. drainage cover, 25. shaft, 26. support frame, 27. servo motor, 28. first pulley, 29. second pulley, 30. belt, 31. first connecting tube, 32. second heater, 33. air vent, 34. second connecting tube, 35. pressure relief tube, 36. locking handle. DETAILED DESCRIPTION

[0016] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0017] This specific embodiment provides a balanced heated steel ball tempering device, such as Figure 1-Figure 9 As shown; it includes a box body 1, a box door 2 is installed on the front side of the box body 1, and the box door 2 is provided with two leaves. The outer sides of the two doors 2 are hinged to the box body 1 through hinges, so that the two doors are arranged to open and close oppositely, which is convenient for operators to open and close the door 2. A locking handle 36 is fixedly installed on the outside of one of the doors 2, and the locking handle 36 can be used to lock the door 2, so as to ensure that when the door 2 is closed, the internal cavity of the box body 1 is a completely enclosed space, thereby increasing the airtightness of the overall device. Four universal guide wheels 8 are installed at the bottom of the box body 1, and the four universal guide wheels 8 are respectively arranged at the four corners of the bottom of the box body 1, so as to facilitate the transportation of the box body 1 and increase the flexibility of the overall device.

[0018] A plurality of vertically distributed frames 13 are fixedly installed on the side walls of the inner cavity of the box body 1. The inner part of the frame 13 is a hollow structure, and the outer side of the frame 13 is tightly connected to the inner cavity wall of the box body 1. The frames 13 on both sides of the same height are a layer, so as to form a uniform multi-layer vertical distribution structure. A bracket 3 is commonly arranged between the two frames 13 on the same layer, so that the bracket 3 is a vertically distributed multi-layer structure. The first rotating wheel 14 is rotatably installed on both sides of the bracket 3. The first rotating wheel 14 is arranged at the rear end of the bracket 3. The first rotating wheel 14 is arranged in the frame 13 and slides with the inner wall of the frame 13, so as to facilitate the horizontal sliding of the bracket 3 in the frame 13. The second rotating wheel 15 is rotatably installed at one end of the frame 13 close to the box door 2. The second rotating wheel 15 is arranged at the bottom of the bracket 3 and slides with the bottom of the bracket 3. On the one hand, it can cooperate with the first rotating wheel 14 to increase the smoothness of the bracket 3 when sliding horizontally, and on the other hand, it can limit the bracket 3 to prevent the bracket 3 from falling out of the frame 13.

[0019] The plate surface of the bracket 3 is provided with a plurality of penetrating circular grooves 16, which are evenly arranged. The inner groove surface of the circular groove 16 contacts the outer wall of the steel ball, thereby supporting and fixing the steel ball, so that the steel balls do not contact each other, avoiding the generation of contact surfaces.

[0020] Two first heating tubes 4 are arranged at the bottom of the inner cavity of the box 1, and two first heaters 17 are fixedly installed on the rear side of the box 1. The two first heaters 17 are electrically connected to the two first heating tubes 4 respectively, so as to provide power for the two first heating tubes 4 to quickly heat up and keep warm. The first heating tube 4 is a U-shaped tube, and the first heating tube 4 is fastened to the inner wall of the box 1 through a heating tube support plate; a plurality of heat conducting sheets 18 are set on the outer periphery of the first heating tube 4, and the heat conducting sheets 18 are evenly arranged. By setting the heat conducting sheets 18, the temperature of the first heating tube 4 can be evenly distributed to the inner cavity of the box 1, thereby ensuring the heating and heat preservation effect of the first heating tube 4. A protective shell 19 is provided around the first heating tube 4 and the heat conducting sheet 18, and the protective shell 19 is tightly connected to the side wall of the inner cavity of the box body 1. By providing the protective shell 19, the first heating tube 4 and the heat conducting sheet 18 can be protected; a plurality of heat-transmitting holes 20 are opened on the protective shell 19, and the heat-transmitting holes 20 are evenly arranged, so as to facilitate the heat of the heat conducting sheet 18 to be dissipated into the inner cavity of the box body 1.

[0021] An air inlet cylinder 5 is fixedly installed on the top of the box 1. The air inlet cylinder 5 is a square cylinder structure. The air inlet cylinder 5 is arranged in a right-angle structure as a whole. Its air inlet end is arranged on the top of the box 1, and its air outlet end faces the ground and is arranged at the outer bottom of the box 1. The inlet end of the air inlet cylinder 5 is connected to the inert gas conveyor, so that the inert gas conveyor inputs the inert gas into the air inlet cylinder 5. A guide cylinder 21 is installed on the air inlet cylinder 5. The guide cylinder 21 is arranged above the box 1. The guide cylinder 21 is a volute structure. A fan frame 22 is rotatably arranged inside the guide cylinder 21. A plurality of fan blades 23 are fixedly installed in the fan frame 22. The fan blades 23 are all arranged obliquely and evenly distributed along the central circumference of the fan frame 22.

[0022] A drainage cover 24 is fixedly installed on the front side of the fan frame 22. The drainage cover 24 is a frustum-shaped structure. The end of the drainage cover 24 with a smaller diameter is tightly connected to the fan frame 22; a rotatable shaft rod 25 is fixedly installed on the rear side of the fan frame 22. The shaft rod 25 is rotatably matched with the guide tube 21 by installing a dynamic sealing bearing. One end of the shaft rod 25 is tightly connected to the side of the fan frame 22 away from the drainage cover 24, and the other end of the shaft rod 25 is arranged on the outside of the guide tube 21 and arranged above the box body 1. A support frame 26 is fixedly installed on the top of the box body 1. The support frame 26 is a two-layer structure. A servo motor 27 is fixedly installed in the support frame 26. The servo motor 27 is fixedly installed on the bottom layer of the support frame 26 by setting a machine base; a first pulley 28 is fixedly installed on the end of the output shaft of the servo motor 27, and the shaft 25 is arranged on the top layer of the support frame 26. The shaft 25 is arranged parallel to the output shaft of the servo motor 27; a second pulley 29 is sleeved on the end of the shaft 25, and a belt 30 for transmission connection is arranged between the first pulley 28 and the second pulley 29, so that the servo motor 27 drives the shaft 25 to rotate. By setting the shaft 25, the fan frame 22 inside the guide tube 21 can be driven to rotate, and under the cooperation of the guide cover 24, the inert gas flowing through the air intake tube 5 can flow in one direction, thereby avoiding the phenomenon of gas backflow.

[0023] A shell 6 is fixedly installed at the bottom of the outer side of the box body 1, and the inner side of the shell 6 is tightly connected to the outer side wall of the box body 1. An air delivery cylinder 7 is fixedly installed in the shell 6. A first connecting cylinder 31 is fixedly installed on the top of the air delivery cylinder 7. The first connecting cylinder 31 is tightly connected to the bottom port of the air intake cylinder 5, so that the air delivery cylinder 7 is connected to the air intake cylinder 5. The first connecting cylinder 31 is a funnel-shaped structure, so as to reduce the flow rate of the inert gas flowing into the air delivery cylinder 7 and make it slowly enter the air. A second heater 32 is fixedly installed on the side of the shell 6, and a plurality of evenly arranged second heating tubes 10 are fixedly installed inside the air delivery cylinder 7. The second heater 32 is electrically connected to each second heating tube 10, so that the second heating tube 10 quickly heats the inert gas.

[0024] One end of the bottom of the air delivery cylinder 7 is arranged in the inner cavity of the box body 1 and is fixedly installed with an air guide cylinder 9, which is arranged on one side of the bottom of the bracket 3. The inner end surface of the air guide cylinder 9 is arranged obliquely and has a plurality of evenly distributed air holes 33, and the air holes 33 face the bracket 3; thereby, it is convenient to blow the heated inert gas toward the bracket 3, so that the steel balls in the bracket 3 are evenly heated.

[0025] The top of the box 1 is equipped with a vent pipe 11 connected to the inner cavity. The vent pipe 11 is a right-angle elbow structure. The vent pipe 11 can be made of Q235B structural steel. The bottom end of the vent pipe 11 is arranged in the inner cavity of the box 1. The top of the vent pipe 11 is fixedly connected with a second connecting tube 34. The second connecting tube 34 is a funnel-shaped structure. The second connecting tube 34 is tightly connected with a pressure relief tube 35. The pressure relief tube 35 is fixedly installed on the top of the box 1. The top of the pressure relief tube 35 is tightly connected with the exhaust tube 12. The exhaust tube 12 is a flexible curved tube. The exhaust tube 12 can be made of polyethylene. The exhaust tube 12 can be connected to the air inlet of the inert gas conveyor. By setting the vent pipe 11, the inert gas inside the box 1 can be discharged after the whole device is idle and used; and by setting the pressure relief tube 35, it can be used to relieve the pressure of the high-temperature inert gas flowing out of the vent pipe 11, thereby ensuring the safety of the whole device.

[0026] The working principle of the present invention is as follows: before the steel ball is tempered, the operator can place the steel ball on the circular groove 16 of the bracket 3 and push the bracket 3 into the interior of the box 1. Before the operator closes the box door 2, the exhaust port of the exhaust pipe 12 needs to be blocked. When the steel ball is tempered, the first heater 17 is started to quickly raise the first heating tube 4 to a predetermined temperature and keep it constant; then, the air inlet of the air inlet cylinder 5 is connected to the air outlet of the inert gas conveyor, so that the inert gas flows into the interior of the air inlet cylinder 5. The second heater 32 is started to quickly heat the second heating tube 10. After the servo motor 27 is started, the shaft 25 can be rotated to rotate the fan frame 22 in the guide cylinder 21, so that the inert gas flows unidirectionally to the air delivery cylinder 7. The second heater 32 can heat the inert gas and continuously deliver the heated inert gas to the inner cavity of the box 1 through the air delivery cylinder 7. The steel balls can be tempered and kept warm in the presence of inert gas. The inert gas fills the inner cavity of the box 1, which can ensure that the temperature in each corner of the inner cavity of the box 1 is in a balanced state. On the one hand, it can ensure that the steel balls are heated evenly, and on the other hand, it can avoid the formation of an oxide layer on the surface of the steel balls, thereby improving the production quality of the steel balls.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A uniformly heated steel ball tempering device, comprising a housing (1), characterized in that: A box door (2) is installed on the front side of the box body (1); a plurality of vertically distributed brackets (3) are arranged in the inner cavity of the box body (1); the brackets (3) are used to support and fix the steel balls; a first heating tube (4) is arranged at the bottom of the inner cavity of the box body (1); the first heating tube (4) is used to increase the inner cavity temperature of the box body (1); an air intake cylinder (5) is fixedly installed on the top of the box body (1); the inlet end of the air intake cylinder (5) is connected to the inert gas conveyor; a shell (6) is fixedly installed on the outer bottom of the box body (1); an air delivery cylinder (7) is fixedly installed in the shell (6); the air delivery cylinder (7) ) is connected to an air inlet cylinder (5), a bottom end of the air delivery cylinder (7) is arranged in the inner cavity of the box body (1) and is fixedly installed with an air guide cylinder (9), the air guide cylinder (9) is used to deliver inert gas into the inner cavity of the box body (1), a plurality of evenly arranged second heating tubes (10) are fixedly installed inside the air delivery cylinder (7), the second heating tubes (10) are used to heat the inert gas; a gas discharge pipe (11) connected to the inner cavity is installed on the top of the box body (1), the gas discharge pipe (11) is connected to an exhaust pipe (12), and the exhaust pipe (12) is used to discharge the inert gas out of the box body (1).

2. The uniformly heated steel ball tempering device according to claim 1, characterized in that: A plurality of vertically distributed frames (13) are fixedly mounted on the side walls on both sides of the inner cavity of the box body (1); first wheels (14) are rotatably mounted on both sides of the bracket (3); the first wheels (14) are arranged in the frame (13) and are slidably matched with the frame (13); a second wheel (15) is rotatably mounted on one end of the frame (13) close to the box door (2); the second wheel (15) is arranged at the bottom of the bracket (3) and is slidably matched with the bracket (3); a plurality of penetrating circular grooves (16) are formed on the bracket (3); the circular grooves (16) are evenly arranged, and the inner groove surfaces of the circular grooves (16) are in contact with the outer walls of the steel balls.

3. The uniformly heated steel ball tempering device according to claim 1, characterized in that: A first heater (17) is fixedly mounted on the rear side of the box body (1), the first heater (17) being electrically connected to a first heating tube (4), the first heating tube (4) being a U-shaped tube, a plurality of heat-conducting sheets (18) being sleeved on the periphery of the first heating tube (4), the heat-conducting sheets (18) being evenly arranged, a protective shell (19) being arranged on the periphery of the first heating tube (4) and the heat-conducting sheets (18), the protective shell (19) being tightly connected to a side wall of the inner cavity of the box body (1), the protective shell (19) being provided with a plurality of heat-transmitting holes (20), the heat-transmitting holes (20) being evenly arranged.

4. The uniformly heated steel ball tempering device according to claim 1, characterized in that: The arrangement height of the air inlet end of the air inlet cylinder (5) is higher than the arrangement height of the air outlet end. A guide cylinder (21) is installed on the air inlet cylinder (5). A fan frame (22) is rotatably arranged inside the guide cylinder (21). A plurality of fan blades (23) are fixedly installed inside the fan frame (22). The fan blades (23) are all obliquely arranged and evenly distributed along the central circumference of the fan frame (22). A guide cover (24) is fixedly installed on the side of the fan frame (22). The guide cover (24) is a frustum-shaped structure. The end of the guide cover (24) with a smaller diameter is tightly connected to the fan frame (22).

5. The uniformly heated steel ball tempering device according to claim 4, characterized in that: A rotatable shaft rod (25) is fixedly mounted on the side of the fan frame (22), and the shaft rod (25) is rotatably matched with the guide tube (21). One end of the shaft rod (25) is tightly connected to a side of the fan frame (22) away from the guide cover (24), and the other end of the shaft rod (25) is arranged outside the guide tube (21) and above the box body (1).

6. The uniformly heated steel ball tempering device according to claim 5, characterized in that: A support frame (26) is fixedly mounted on the top of the box body (1), a servo motor (27) is fixedly mounted inside the support frame (26), a first pulley (28) is fixedly mounted on the end of the output shaft of the servo motor (27), a second pulley (29) is sleeved on the end of the shaft rod (25), and a belt (30) for transmission connection is arranged between the first pulley (28) and the second pulley (29).

7. The uniformly heated steel ball tempering device according to claim 1, characterized in that: A first connecting tube (31) is fixedly mounted on the top of the air supply tube (7), the first connecting tube (31) is tightly connected to the bottom port of the air intake tube (5), and the first connecting tube (31) is a funnel-shaped structure; a second heater (32) is fixedly mounted on the side of the shell (6), and the second heater (32) is electrically connected to each second heating tube (10).

8. The uniformly heated steel ball tempering device according to claim 1, characterized in that: The air guide cylinder (9) is arranged at the bottom of the bracket (3); the inner end surface of the air guide cylinder (9) is arranged obliquely and is provided with a plurality of evenly distributed air holes (33); the air holes (33) face the bracket (3).

9. The uniformly heated steel ball tempering device according to claim 1, characterized in that: The vent pipe (11) is a right-angled bend pipe structure. The bottom end of the vent pipe (11) is arranged in the inner cavity of the box body (1). The top end of the vent pipe (11) is fixedly connected to a second connecting tube (34). The second connecting tube (34) is a funnel-shaped structure. The second connecting tube (34) is tightly connected to a pressure relief tube (35). The pressure relief tube (35) is fixedly installed on the top of the box body (1). The top end of the pressure relief tube (35) is tightly connected to the exhaust tube (12).

10. The uniformly heated steel ball tempering device according to claim 1, characterized in that: The box door (2) is provided with two leaves which are arranged to open and close oppositely, and a locking handle (36) is fixedly installed on the outside of the box door (2); and a plurality of universal guide wheels (8) are installed on the bottom of the box body (1).

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