Closed efficient cooling device of kiln car

Abstract

The utility model belongs to the technical field of closed cooling of kiln cars, and discloses a closed efficient cooling device of a kiln car, which is characterized in that lifting mechanisms are symmetrically arranged front and back and are vertically and fixedly arranged on the front and back inner sides of a portal frame; the number of the supporting plates is two, and the supporting plates are fixedly arranged on the inner sides of the lifting mechanisms correspondingly. The cooling box is fixedly arranged on supporting plates of lifting mechanisms which are symmetrically arranged front and back; the blower is fixedly arranged at the upper part of the cooling box close to the left middle position; the mounting groove is formed in the upper part of the left end of the track; the fixing block is fixedly arranged at the bottom of the left end of the front rail of the portal frame, and the proximity switch is fixedly arranged at the center of the upper portion of the fixing block. The kiln car cooling device has the advantages that the cooling efficiency of refractory green bricks on the kiln car is greatly improved, and meanwhile the cooling effect of the refractory green bricks in the center of the kiln car is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of closed cooling of kiln cars, and in particular relates to a closed high-efficiency cooling device for a kiln car. Background Art

[0002] The kiln car is the transport equipment that carries refractory bricks for firing in a tunnel kiln (or batch kiln). It is also the most important auxiliary equipment of the tunnel kiln. Kiln cars are generally square or rectangular, and their specifications are determined by the kiln structure, effective width, and stacking method. The design and manufacture of the kiln car are not only determined by the kiln structure and materials used, but also by the quality of the fired products, output, heat consumption, pressure balance within the kiln, and the lifespan of the kiln car itself. Therefore, the structural design and manufacturing of the kiln car are extremely important to ensure the normal operation of the kiln. After the refractory bricks are stacked on the kiln car, the kiln car's traction mechanism or propulsion mechanism ensures that the refractory bricks on the kiln car are fired in the tunnel kiln and removed from the kiln after firing.

[0003] In the prior art, after the kiln car and the refractory bricks stacked on top are fired and taken out of the kiln, the refractory bricks on the kiln car need to be cooled. The usual cooling method is to use a high-efficiency fan to directly cool the refractory bricks on the kiln car. The main technical problems with the above-mentioned cooling method of refractory bricks are: slow cooling speed, low cooling efficiency, and incomplete cooling of the refractory bricks, which will cause the refractory bricks stacked near the center of the kiln car to not be cooled. Based on the above-mentioned technical defects in the prior art, the inventors have developed a closed and efficient cooling device for kiln cars, which can effectively solve the technical problems existing in the prior art. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a closed high-efficiency cooling device for a kiln car, which has a simple, scientific and reasonable structural design, greatly improves the cooling efficiency of the refractory bricks on the kiln car, and at the same time improves the cooling effect of the refractory bricks at the center of the kiln car; the utility model can solve the problems of slow cooling speed and low cooling efficiency of the refractory bricks on the kiln car, and incomplete cooling of the refractory bricks, which will cause the refractory bricks stacked near the center of the kiln car to not be cooled.

[0005] The technical solution adopted by the present invention is: a closed and efficient cooling device for a kiln car, comprising a gantry 1, a control panel 2, and a kiln car 3; the gantry 1 is fixedly arranged at the middle position of the left end of the kiln car, and the control panel 2 is fixedly arranged at the front side of the gantry 1 near the lower position; the kiln car 3 is placed on a track 4, and the kiln car 3 is located at the middle position of the right side of the gantry 1; two tracks 4 are symmetrically arranged front and back, and the tracks 4 are horizontally arranged at the middle position of the bottom of the gantry 1 and the kiln car 3, and the tracks 4 are fixed to the workshop floor; a lifting mechanism 5 is symmetrically arranged front and back and vertically fixed at the front and back inner positions of the gantry 1, and the lifting mechanism 5 is used to enable the cooling box 7 to achieve lifting and moving up and down; two support plates 6 are provided, and the support plates 6 are respectively fixed on the inner sides of the lifting mechanism 5, and the support plates 6 are used to The box 7 provides support; the cooling box 7 is fixedly arranged on the support plate 6 of the lifting mechanism 5 symmetrically arranged in the front and rear directions. The cooling box 7 is a square body with a closed upper part and four sides and an open lower part. The cooling box 7 is used to cover the kiln car 3 to cool it down; the blower 8 is fixedly arranged at the upper part of the cooling box 7 near the middle position on the left side, the outlet end of the blower 8 is fixedly connected to the upper end of the air duct 9, and the lower end of the air duct 9 is fixedly connected to the upper center position of the cooling box 7; the mounting groove 10 is opened at the upper left end position of the track 4, and the mounting groove 10 is used to install the induction limit mechanism 11; the fixed block 12 is fixedly arranged near the bottom position of the left end of the track 4 on the front side of the gantry 1, and the proximity switch 13 is fixedly arranged at the upper center position of the fixed block 12. The proximity switch 13 is used to sense the displacement position of the kiln car 3.

[0006] The control panel 2 includes a control panel body 21, which is fixedly arranged on the front side of the gantry 1 near the lower position, the display screen 22 is arranged in the upper middle position of the front side of the control panel body 21, and the PLC control board 23 is fixedly arranged inside the control panel body 21; the start button 24 is fixedly arranged at the lower left position of the display screen 22, the close button 25 is fixedly arranged at the right position of the start button 24, and the emergency stop button 26 is fixedly arranged at the right position of the close button 25.

[0007] The display screen 22 is fixedly connected to the PLC control board 23 via a data line, and the PLC control board 23 is fixedly connected to the proximity switch 13 and the solenoid valve of the blower 8 via a data line.

[0008] The kiln car 3 includes a kiln car body 31 , at the four corners of the bottom of the kiln car body 31 , rolling wheels 32 are fixedly provided. The rolling wheels 32 are clamped on the track 4 and can slide left and right. Refractory bricks 33 are stacked on the upper part of the kiln car body 31 .

[0009] The lifting mechanism 5 includes an upper plate 51, which is fixedly arranged at the upper position of the inner side surface of the gantry 1, and a lower plate 52 is fixedly arranged at the lower position of the inner side surface of the gantry 1; the guide rods 53 are fixedly arranged at the two side positions between the upper plate 51 and the lower plate 52, and two displacement cylinders 54 are provided, which are respectively mounted on the guide rods 53 which are symmetrically arranged on the left and right; the connecting plate 55 is fixedly arranged at the horizontal position between the displacement cylinders 54, and the left and right ends of the connecting plate 55 are fixedly connected to the inner side surface of the displacement cylinder 54; the mounting hole 56 is opened at the center position of the connecting plate 55, the base of the hydraulic cylinder 57 is fixedly connected to the middle position of the bottom of the upper plate 51, and the telescopic rod of the hydraulic cylinder 57 is fixedly connected to the mounting hole 56.

[0010] The PLC control board 23 is fixedly connected to the control solenoid valve of the hydraulic cylinder 57 via a data line.

[0011] The support plate 6 is fixedly arranged on the inner side surface of the displacement cylinder 54 in a transverse direction, and the support plate 6 fixes and connects the displacement cylinders 54 arranged symmetrically on the left and right to form an integral structure.

[0012] The cooling box 7 includes a cooling box body 71, an air inlet 75 is provided at the upper center position of the cooling box body 71, a partition 72 is fixedly arranged at the upper position of the cooling box body 71, and U-shaped grooves are provided on the four sides of the partition 72. The four sides of the partition 72 are fixedly connected to the inner walls of the cooling box body 71; the air distribution box 73 is open at the bottom and closed at the top and all sides, and air distribution holes 74 are evenly provided on the surrounding surfaces and the upper surface of the air distribution box 73.

[0013] The size of the air distribution box 73 is larger than that of the kiln car 3 , and the air distribution box 73 covers the kiln car 3 and the refractory bricks 33 .

[0014] The lower end of the air duct 9 is fixedly connected to the air inlet 75 , and the air duct 9 is used to transport cooling air to the cooling box body 71 .

[0015] The induction limit mechanism 11 includes a fixed base 111, which is circular in shape and fixedly arranged at the bottom center of the mounting groove 10. Four guide columns 112 are provided, and the guide columns 112 are vertically fixed to the upper part of the fixed base 111 in a cross-symmetrical manner. The limit disk 113 is fixedly arranged on the upper part of the wire column 112; the movable disk 114 is sleeved on the guide column 112, and the limit block 115 is fixedly arranged at the upper center position of the movable disk 114. The base of the electric push rod 116 is fixedly arranged at the center position of the fixed base 111, and the telescopic rod of the electric push rod 116 is fixed to the bottom center of the movable disk 114.

[0016] The PLC control board 23 is fixedly connected to the electric push rod 116 of the inductive limiting mechanism 11 in the installation groove 10 at the left end of the track 4 which is symmetrically arranged in the front and rear directions through a data transmission line.

[0017] The working process of the closed high-efficiency cooling device of the kiln car is as follows: first, the start button 24 of the control panel 2 is pressed to put the hydraulic cylinder 57, the blower 8 and the electric push rod 116 of the lifting mechanism 5 into a standby working state; when the kiln car 3 coming out of the tunnel kiln is moved to the track 4 arranged symmetrically in front and back under the traction action of the traction mechanism, as the kiln car 3 continues to move to the left side of the track 4, when the kiln car 3 moves to the position of the proximity switch 13, the proximity switch 13 senses the position of the rolling wheel 32 of the kiln car 3 and transmits the sensed position signal to the PLC control board 23. After receiving the signal, the PLC control board 23 sends a start control command to the electric push rod 116 of the sensing limit mechanism 11 on the track 4 arranged symmetrically in front and back. At this time, the electric push rod 116 extends and causes the movable plate 114 and the limit block 115 to protrude through the installation slot 10 to the upper part of the track 4 through the guidance action of the guide column 112 and the cooperation of the installation slot 10. At the same time, the PLC control board 23 initiates the stop action of the traction mechanism. The control command of the action is sent, and the traction mechanism stops working. At this time, the rolling wheel 32 of the kiln car 3 is just in close contact with the limit block 115 of the inductive limit mechanism 11; at the same time, the PLC control board 23 sends an opening control command to the solenoid valve of the hydraulic cylinder 57 of the lifting mechanism 5, and at the same time sends an opening control command to the solenoid valve of the blower 8; at this time, under the extension action of the hydraulic cylinder 57 of the lifting mechanism 5, the displacement cylinder 54 is pushed to move downward along the guide rod 53, and the support plate 6 and the cooling box 7 are driven to move downward. When the hydraulic cylinder 57 is extended, the displacement cylinder 54 is pushed downward along the guide rod 53, and the support plate 6 and the cooling box 7 are driven downward. When it reaches the limit position, the cooling box 7 just covers the kiln car 3 and the refractory bricks; at the same time, the blower 8 transports the cooling gas to the partition 72 of the cooling box 7 through the air duct 9. The partition 72 has a blocking effect and the cooling gas is further transported to the air distribution box 73 through the U-shaped grooves opened on the four sides of the partition 72. The cooling gas is evenly blown to the refractory bricks 33 on the kiln car 3 through the air distribution holes 74 on the air distribution box 73, thereby performing a high-efficiency closed-type cooling operation on the refractory bricks 33 on the kiln car 3.

[0018] The beneficial effects of the present invention are as follows: through the arrangement of the control panel, the lifting mechanism, the blower, the cooling box and the inductive limiting mechanism, when the kiln car moves to the position of the inductive limiting mechanism, the position of the kiln car is determined by induction, and at this time the cooling box is lowered by the lifting mechanism to cover the kiln car and the refractory bricks on the kiln car, and the refractory bricks on the kiln car are efficiently cooled and cooled under the action of the blower in combination with the blowing, thereby greatly improving the cooling efficiency of the refractory bricks on the kiln car and at the same time improving the cooling effect of the refractory bricks at the center position of the kiln car. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 For this utility model Figure 1 sectional view of

[0021] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle;

[0022] Markings in the figure: 1. Gantry, 2. Control panel, 21. Control panel body, 22. Display, 23. PLC control panel, 24. Start button, 25. Close button, 26. Emergency stop button, 3. Kiln car, 31. Kiln car body, 32. Rolling wheel, 33. Refractory brick, 4. Track, 5. Lifting mechanism, 51. Upper plate, 52. Lower plate, 53. Guide rod, 54. Displacement cylinder, 55. Connecting plate, 56. Installation Hole, 57, hydraulic cylinder, 6, support plate, 7, cooling box, 71, cooling box body, 72, partition, 73, air distribution box, 74, air distribution hole, 75, air inlet, 8, blower, 9, air duct, 10, mounting slot, 11, induction limit mechanism, 111, fixed base, 112, guide column, 113, limit plate, 114, movable plate, 115, limit block, 116, electric push rod, 12, fixed block, 13, proximity switch. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides a closed high-efficiency cooling device for a kiln car:

[0025] like Figure 1 and 2 As shown, the gantry 1 is fixedly arranged at the middle position of the left end of the kiln car. The above-mentioned arrangement of the gantry 1 provides a stable support for the lifting mechanism 5, the cooling box 7, and the blower 8.

[0026] like Figure 1 As shown in or 2, the control panel 2 is fixedly set on the front side of the gantry 1 near the lower position, and the control panel 2 includes a control panel body 21, the control panel body 21 is fixedly set on the front side of the gantry 1 near the lower position, the display screen 22 is set in the upper middle position of the front side of the control panel body 21, and the PLC control board 23 is fixedly set inside the control panel body 21; the start button 24 is fixedly set at the lower left position of the display screen 22, the close button 25 is fixedly set at the right side position of the start button 24, and the emergency stop button 26 is fixedly set at the right side position of the close button 25.

[0027] The aforementioned configuration of the PLC control board 23, on the one hand, enables automatic control of the hydraulic cylinder 57 of the lifting mechanism 5, the solenoid valve opening of the blower 8, the electric push rod 116 of the inductive limit mechanism 11, and the proximity switch 13. Furthermore, it achieves coordinated control of the position of the kiln car 3 and the inductive limit mechanism 11, thereby achieving precise positioning of the kiln car 3.

[0028] like Figure 1 As shown in FIG2 , two rails 4 are symmetrically arranged front and rear, horizontally positioned between the gantry 1 and the bottom of the kiln car 3, and fixed to the workshop floor. This arrangement of rails 4, on the one hand, allows the kiln car 3 to move freely along the rails 4 under the traction of the traction mechanism; on the other hand, an inductive limiter 11, located in a mounting slot 10 at the left end of the rails 4, and controlled by a PLC control board 23, enables precise positioning of the kiln car 3.

[0029] like Figure 1 As shown in or 2, the lifting mechanism 5 is symmetrical front and back and vertically fixed at the front and rear inner positions of the gantry 1, and the lifting mechanism 5 is used to enable the cooling box 7 to be lifted and moved up and down; the lifting mechanism 5 includes an upper plate 51, the upper plate 51 is fixed at the upper position of the inner side of the gantry 1, and the lower plate 52 is fixed at the lower position of the inner side of the gantry 1; the guide rods 53 are fixed at the two side positions between the upper plate 51 and the lower plate 52, and there are two displacement cylinders 54, which are respectively mounted on the guide rods 53 symmetrically arranged on the left and right; the connecting plate 55 is fixed at the horizontal position between the displacement cylinders 54, and the left and right ends of the connecting plate 55 are fixedly connected to the inner side of the displacement cylinder 54; the mounting hole 56 is opened at the center position of the connecting plate 55, the base of the hydraulic cylinder 57 is fixedly connected to the middle position of the bottom of the upper plate 51, and the telescopic rod of the hydraulic cylinder 57 is fixedly connected to the mounting hole 56.

[0030] The telescopic action of the hydraulic cylinder 57 pushes the connecting plate 55 and the displacement cylinder 54 to move up and down, thereby ultimately driving the vertical movement of the support plate 6, and ultimately driving the vertical movement of the cooling box 7 through the vertical movement of the support plate 6. On the one hand, it serves to cover the air distribution box 73 of the cooling box 7 on the kiln car 3, thereby performing efficient closed cooling of the refractory bricks 33 on the kiln car 3; on the other hand, it realizes three-dimensional cooling of the refractory bricks 33, thereby improving the cooling efficiency of the refractory bricks 33.

[0031] like Figure 2As shown, the cooling box 7 is fixedly arranged on the support plate 6 of the lifting mechanism 5 which is symmetrically arranged in the front and rear directions. The cooling box 7 is a square body which is closed at the top and sides and open at the bottom. The cooling box 7 is used to cover the kiln car 3 to cool it; the cooling box 7 includes a cooling box body 71, an air inlet 75 is provided at the upper center position of the cooling box body 71, a partition 72 is fixedly arranged at the upper position of the cooling box body 71, a U-shaped groove is provided on the four sides of the partition 72, and the four sides of the partition 72 are fixedly connected to the inner walls of the cooling box body 71; the air distribution box 73 is open at the bottom and closed at the top and sides, and air distribution holes 74 are evenly provided on the surrounding surfaces and the upper surface of the air distribution box 73.

[0032] The above-mentioned setting of the partition 72 evenly distributes the cooling gas generated by the blower 8 into the air distribution box 73 through the partition 72. On the one hand, it plays a role in evenly diverting the cooling gas. On the other hand, it prevents the cooling gas from being directly blown to the upper part of the air distribution box 73, causing uneven distribution of the cooling gas.

[0033] The above-mentioned arrangement of the air distribution box 73, on the one hand, homogenizes the cooling gas, and on the other hand, allows the cooling gas to be blown three-dimensionally onto the refractory bricks 33 of the kiln car 3, thereby greatly improving the cooling efficiency of the refractory bricks on the kiln car and simultaneously improving the cooling effect of the refractory bricks at the center of the kiln car.

[0034] like Figure 1 、 2 As shown in FIG3 , a mounting groove 10 is provided at the upper left end of the track 4 , and the mounting groove 10 is used to install the sensing limit mechanism 11 ; a fixed block 12 is fixedly provided at a position near the bottom left end of the track 4 on the front side of the gantry 1 , and a proximity switch 13 is fixedly provided at the upper center position of the fixed block 12 , and the proximity switch 13 is used to sense the displacement position of the kiln car 3 .

[0035] The above-mentioned installation slot 10 provides a mounting space for the inductive limiter 11. This inductive limiter 11, under the control of the PLC control board 23 and the proximity switch 13, can, on the one hand, precisely limit the position of the kiln car 3, and, on the other hand, accurately position the cooling box 7 relative to the kiln car 3.

[0036] like Figure 3As shown, the induction limit mechanism 11 includes a fixed base 111, which is circular and fixedly arranged at the bottom center of the mounting groove 10. Four guide columns 112 are provided, and the guide columns 112 are vertically fixed to the upper part of the fixed base 111 in a cross-symmetrical manner. The limit disk 113 is fixedly arranged on the upper part of the wire column 112; the movable disk 114 is mounted on the guide column 112, and the limit block 115 is fixedly arranged at the upper center position of the movable disk 114. The base of the electric push rod 116 is fixedly arranged at the center position of the fixed base 111, and the telescopic rod of the electric push rod 116 is fixed to the bottom center of the movable disk 114.

[0037] By configuring the fixed base 111, the guide column 112, the limit plate 113, the movable plate 114, the limit block 115, and the electric push rod 116 as described above, automatic control of the extension and retraction of the electric push rod 116 is achieved under the coordinated control of the proximity sensing function of the proximity switch 13 and the PLC control board 23. As a result, when the rolling wheel 32 of the kiln car 3 moves to the position of the proximity switch 13, the electric push rod 116 automatically extends, fixing the limit block 115 above the upper portion of the mounting groove 10. Utilizing the close contact and limiting effect between the limit block 115 and the rolling wheel 32 of the kiln car 3, precise vertical positioning of the cooling box 7 and the kiln car 3 is achieved.

[0038] like Figure 1-3As shown, the working process of this closed high-efficiency cooling device for a kiln car is as follows: first, the start button 24 of the control panel 2 is pressed to put the hydraulic cylinder 57, the blower 8, and the electric push rod 116 of the lifting mechanism 5 into a standby working state; when the kiln car 3 coming out of the tunnel kiln is pulled by the traction mechanism and moves onto the track 4 arranged symmetrically in the front and back directions, as the kiln car 3 continues to move to the left side of the track 4, when the kiln car 3 moves to the position of the proximity switch 13, the proximity switch 13 senses the position of the rolling wheel 32 of the kiln car 3 and transmits the sensed position signal to the PLC control board 23. After receiving the signal, the PLC control board 23 sends a start control command to the electric push rod 116 of the sensing limit mechanism 11 on the track 4 arranged symmetrically in the front and back directions. At this time, the electric push rod 116 extends and causes the movable plate 114 and the limit block 115 to protrude through the installation slot 10 to the upper part of the track 4 through the guidance of the guide column 112 and the cooperation of the installation slot 10. At the same time, the PLC control board 23 activates the stop switch of the traction mechanism. The control command of the stop action is sent, and the traction mechanism stops working. At this time, the rolling wheel 32 of the kiln car 3 is just in close contact with the limit block 115 of the inductive limit mechanism 11; at the same time, the PLC control board 23 sends an open control command to the solenoid valve of the hydraulic cylinder 57 of the lifting mechanism 5, and at the same time sends an open control command to the solenoid valve of the blower 8; at this time, under the extension action of the hydraulic cylinder 57 of the lifting mechanism 5, the displacement cylinder 54 is pushed to move downward along the guide rod 53, and the support plate 6 and the cooling box 7 are driven to move downward. When the hydraulic cylinder 57 is extended, the displacement cylinder 54 is pushed downward along the guide rod 53, and the support plate 6 and the cooling box 7 are driven downward. When opened to the limit position, the cooling box 7 just covers the kiln car 3 and the refractory bricks; at the same time, the blower 8 transports the cooling gas to the partition 72 of the cooling box 7 through the air duct 9. The partition 72 has a blocking effect and the cooling gas is further transported to the air distribution box 73 through the U-shaped grooves opened on the four sides of the partition 72. The cooling gas is evenly blown onto the refractory bricks 33 on the kiln car 3 through the air distribution holes 74 on the air distribution box 73, thereby performing a high-efficiency closed-type cooling operation on the refractory bricks 33 on the kiln car 3.

[0039] Various modifications to the above embodiments will be readily apparent to those 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 invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to be applicable to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A closed, high-efficiency cooling device for a kiln car, comprising a gantry, a control panel, and a kiln car; the gantry is fixedly disposed in the middle of the left end of the kiln car, and the control panel is fixedly disposed in the front, near the bottom, portion of the gantry; the kiln car is placed on a track, the kiln car being positioned in the middle of the right side of the gantry; two tracks are symmetrically disposed front and back, horizontally disposed between the bottoms of the gantry and the kiln car, and fixed to the workshop floor; and characterized in that: The lifting mechanism is symmetrical in front and back and is vertically fixedly arranged at the front and rear inner sides of the gantry. The lifting mechanism is used to enable the cooling box to move up and down. Two support plates are provided, which are respectively fixedly arranged on the inner sides of the lifting mechanism. The support plates are used to provide support for the cooling box. The cooling box is fixedly arranged on the support plates of the lifting mechanism which are symmetrical in front and back. The cooling box is a square body with a closed upper part and four sides and an open lower part. The cooling box is used to cover the kiln car to cool it. The blower is fixedly arranged at the upper part of the cooling box near the middle position on the left side, the outlet end of the blower is fixedly connected to the upper end of the air duct, and the lower end of the air duct is fixedly connected to the upper center position of the cooling box; the installation groove is opened at the upper position of the left end of the track, and the installation groove is used to install the induction limit mechanism; the fixed block is fixedly arranged near the bottom position of the left end of the track on the front side of the gantry, and the proximity switch is fixedly arranged at the upper center position of the fixed block, and the proximity switch is used to sense the displacement position of the kiln car.

2. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The control panel includes a control panel body, which is fixedly arranged on the front side of the gantry near the lower position, the display screen is arranged in the upper middle position of the front side of the control panel body, and the PLC control board is fixedly arranged inside the control panel body; the start button is fixedly arranged on the lower left position of the display screen, the close button is fixedly arranged on the right side of the start button, and the emergency stop button is fixedly arranged on the right side of the close button.

3. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The kiln car comprises a kiln car body. The four corners of the bottom of the kiln car body are fixedly provided with rolling wheels. The rolling wheels are clamped on the track and can slide left and right. The refractory bricks are stacked on the upper part of the kiln car body.

4. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The lifting mechanism includes an upper plate, which is fixedly arranged at the upper position of the inner side surface of the gantry, and a lower plate is fixedly arranged at the lower position of the inner side surface of the gantry; guide rods are fixedly arranged at both sides symmetrically between the upper plate and the lower plate, and two displacement cylinders are provided, which are respectively mounted on the guide rods symmetrically arranged at the left and right; a connecting plate is fixedly arranged at a horizontal position between the displacement cylinders, and the left and right ends of the connecting plate are fixedly connected to the inner side surface of the displacement cylinder; a mounting hole is opened at the center position of the connecting plate, the base of the hydraulic cylinder is fixedly connected to the middle position of the bottom of the upper plate, and the telescopic rod of the hydraulic cylinder is fixedly connected to the mounting hole.

5. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The support plate is transversely fixedly arranged on the inner side surface of the displacement cylinder, and the support plate fixedly connects the displacement cylinders which are symmetrically arranged on the left and right to form an integral structure.

6. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The cooling box includes a cooling box body, an air inlet is opened at the upper center position of the cooling box body, a partition is fixedly arranged at the upper position of the cooling box body, U-shaped grooves are opened on the four sides of the partition, and the four sides of the partition are fixedly connected to the four inner walls of the cooling box body; the air distribution box is open at the bottom and closed at the top and all sides, and air distribution holes are evenly opened on the four sides and the upper surface of the air distribution box.

7. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The lower end of the air duct is fixedly connected to the air inlet, and the air duct is used to transport cooling gas to the cooling box body.

8. The closed high-efficiency cooling device for a kiln car according to claim 1, characterized in that: The induction limit mechanism includes a fixed base, which is circular and fixedly arranged at the bottom center of the mounting groove. Four guide columns are provided, which are vertically fixed to the upper part of the fixed base in a cross-symmetrical manner. The limit plate is fixedly arranged on the upper part of the wire column. The movable plate is mounted on the guide column, the limit block is fixedly arranged at the upper center position of the movable plate, the base of the electric push rod is fixedly arranged at the center position of the fixed base, and the telescopic rod of the electric push rod is fixed to the bottom center of the movable plate.

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