Kiln with heat recovery function

Abstract

The invention belongs to the technical field of kilns, and discloses a kiln with a heat recovery function, which comprises a support frame, the left end of the support frame is fixedly connected with an air curtain air pipeline, and the rear end of the support frame is fixedly connected with a plurality of air pumps; the middle of the supporting frame is sequentially and fixedly connected with a heat return pipeline, a fuel gas mixing pipeline assembly, a rapid cooling pipeline, a slow cooling pipeline and a kiln tail smoke exhaust air pipe from left to right, the right end of the air curtain air pipeline is in pipe connection with the left end of the heat return pipeline, and the right end of the heat return pipeline is in pipe connection with the upper portion of the slow cooling pipeline. The air curtain air pipeline, the heat return pipeline, the fuel gas mixing pipeline assembly, the rapid cooling pipeline, the slow cooling pipeline and the kiln tail smoke exhaust air pipe are all fixedly connected with the output end of the air pump, a plurality of brick frames and a plurality of rack assemblies are slidably connected to the inner side surface of the supporting frame, and the problems that heat is difficult to recycle and supporting is unstable are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of kilns, and in particular relates to a kiln with a heat recovery function. Background Art

[0002] A kiln is a furnace used to fire ceramics and sculptures or to fuse enamel to the surface of metal objects. It is usually made of bricks and stones, and can be made into various sizes according to needs. It can be operated by combustible gas, oil or electricity. During the use of existing kilns, it is often difficult to recycle the heat, and there is also an instability in the fixed support of the product. Summary of the invention

[0003] The present invention aims at the problems of difficulty in heat recovery and unstable support in the prior art, and proposes the following technical solutions:

[0004] A kiln with a heat recovery function comprises a support frame, the left end of the support frame is fixedly connected with an air curtain duct, the rear end of the support frame is fixedly connected with a plurality of air pumps, the middle part of the support frame is fixedly connected with a heat recovery duct, a gas mixing duct assembly, a rapid cooling duct, a slow cooling duct and a kiln tail smoke exhaust duct from left to right in sequence, the right end of the air curtain duct is pipe-connected with the left end of the heat recovery duct, the right end of the heat recovery duct is pipe-connected with the upper part of the slow cooling duct, the air curtain duct, the heat recovery duct, the gas mixing duct assembly, the rapid cooling duct, the slow cooling duct and the kiln tail smoke exhaust duct are all fixedly connected with the output end of the air pump, and the inner surface of the support frame is slidably connected with a plurality of brick frames and a plurality of stand assemblies.

[0005] As a preferred embodiment of the above technical solution, the stand assembly includes a stand plate slidably connected to the inner surface of the support frame, a plurality of sliding frames are fixedly connected to the middle of the stand plate, and a fixed slider is slidably connected to the inner surface of the sliding frame.

[0006] As a preferred embodiment of the above technical solution, the inner surface of the fixed slider is slidably connected with a lateral protrusion, the inner surface of the lateral protrusion is slidably connected with a special-shaped clip strip, the inside of the lateral protrusion is fixedly connected with a positioning block, the upper and lower ends of the positioning block are fixedly connected with a return spring rod, and the other end of the return spring rod is fixedly connected to one end of the special-shaped clip strip close to the positioning block.

[0007] As a preferred embodiment of the above technical solution, a spring connecting rod is fixedly connected to one end of the lateral protrusion close to the fixed sliding block, and the other end of the spring connecting rod is fixedly connected to a guide baffle, and a square column is fixedly connected to one end of the guide baffle close to the lateral protrusion, and the other end of the square column is fixedly connected to a trapezoidal push block.

[0008] As a preferred embodiment of the above technical solution, the outer surface of the trapezoidal push block is slidably connected to the inner surface of the lateral protrusion, and the outer surface of the trapezoidal push block is slidably connected to the outer surface of the special-shaped clamping strip.

[0009] As a preferred embodiment of the above technical solution, an end of the guide baffle away from the square column is fixedly connected with an internal threaded sleeve, the inner surface of the internal threaded sleeve is threadedly connected with a double-headed threaded column, and the outer surface of the double-headed threaded column is rotatably connected to the inner surface of the fixed slider.

[0010] As a preferred embodiment of the above technical solution, the middle outer surface of the double-headed threaded column is fixedly connected to a ring gear, the outer surface of the ring gear is meshingly connected to a T-type rack slider, the outer surface of the T-type rack slider is slidingly connected to the inner surface of the fixed slider, one end of the T-type rack slider is fixedly connected to an auxiliary threaded column, the outer surface of the auxiliary threaded column is threadedly connected to a threaded sleeve knob, the outer surface of the threaded sleeve knob is rotatably connected to the inner surface of the fixed slider, the other end of the T-type rack slider is fixedly connected to an adjusting spring connecting rod, and the other end of the adjusting spring connecting rod is fixedly connected to the inside of the fixed slider.

[0011] As a preferred embodiment of the above technical solution, a spray gun head is fixedly connected to the inner surface of the middle part of the support frame, the spray gun head is located on the outside of the gas mixing pipeline assembly, and the spray gun head is connected to the external gas pipeline.

[0012] As a preferred embodiment of the above technical solution, the gas mixing pipeline assembly includes a main delivery pipeline fixedly connected to the output end of the heat recovery pipeline, the output end of the main delivery pipeline is fixedly connected to an I-shaped pipeline, and the output end of the I-shaped pipeline is located on the front and rear sides of the brick frame and stand assembly.

[0013] The beneficial effects of the present invention are:

[0014] By providing a heat recovery pipe and a slow cooling pipe, air is introduced into the slow cooling pipe to absorb the temperature of the residual gas in the gas mixing pipe assembly and the spray gun head, so as to slowly cool the product, and the residual hot gas in the slow cooling pipe can be sent to the tail end of the air curtain air pipe through the heat recovery pipe, mixed with the airflow at the tail end of the air curtain air pipe, and enter the inner side of the gas mixing pipe assembly to improve the overall heat utilization rate and the overall working life;

[0015] Through the threaded transmission of the auxiliary threaded column and the threaded sleeve knob, the T-shaped rack slider can be driven to slide under the limit of the fixed slider by twisting the threaded sleeve knob, and the double-headed threaded column can be driven to rotate through the meshing connection of the annular gear and the T-shaped rack slider. By setting the rotation directions of the threads at both ends of the double-headed threaded column in opposite directions, the lateral protrusions on both sides can be driven to move in the same part, thereby improving the overall reliability and stability. At the same time, through the inclined sliding of the trapezoidal push block and the special-shaped card strip, the lateral protrusions can slide relatively when they abut the sliding groove on the sliding frame, thereby further improving the overall stability and safety, and improving the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a perspective view of a kiln with heat recovery function;

[0017] Figure 2 Shown is a perspective view of the stand assembly;

[0018] Figure 3 Shown is a schematic diagram of the internal structure of the stand assembly;

[0019] Figure 4 What is shown is a schematic diagram of the internal structure of the stand assembly from another perspective;

[0020] Figure 5 What is shown is a schematic diagram of the structure of a special-shaped card strip and a trapezoidal push block;

[0021] Figure 6 It shows Figure 5 A local enlarged schematic diagram of the middle A;

[0022] Figure 7 Shown is a perspective view of a gas mixing conduit assembly.

[0023] In the figure: 1, support frame; 2, air curtain air duct; 3, heat recovery duct; 4, air pump; 5, gas mixing duct assembly; 501, main delivery duct; 502, I-shaped duct; 6, spray gun head; 7, rapid cooling duct; 8, slow cooling duct; 9, kiln tail exhaust duct; 10, brick frame; 11, stand assembly; 1101, stand plate; 1102, sliding frame; 1103, fixed slider; 1104, lateral protrusion; 110 5. Special-shaped clamping strip; 1106. Positioning block; 1107. Reset spring rod; 1108. Spring connecting rod; 1109. Guide baffle; 1110. Square column; 1111. Trapezoidal push block; 1112. Internal threaded sleeve; 1113. Double-headed threaded column; 1114. Ring gear; 1115. T-shaped rack slider; 1116. Auxiliary threaded column; 1117. Threaded sleeve knob; 1118. Adjustment spring connecting rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0025] Example 1

[0026] The present invention provides a kiln with heat recovery function, such as Figures 1 to 7 As shown, it includes a support frame 1, the left end of the support frame 1 is fixedly connected with an air curtain air duct 2, the rear end of the support frame 1 is fixedly connected with a plurality of air pumps 4, the middle part of the support frame 1 is fixedly connected with a heat recovery pipe 3, a gas mixing pipe assembly 5, a rapid cooling pipe 7, a slow cooling pipe 8 and a kiln tail smoke exhaust air duct 9 from left to right in sequence, the right end of the air curtain air duct 2 is pipe-connected with the left end of the heat recovery pipe 3, the right end of the heat recovery pipe 3 is pipe-connected with the upper part of the slow cooling pipe 8, the air curtain air duct 2, the heat recovery pipe 3, the gas mixing pipe assembly 5, the rapid cooling pipe 7, the slow cooling pipe 8 and the kiln tail smoke exhaust air duct 9 are all fixedly connected with the output end of the air pump 4, the inner surface of the support frame 1 is slidably connected with a plurality of brick frames 10 and a plurality of stand assemblies 11, the middle inner surface of the support frame 1 is fixedly connected with a spray gun head 6, and the spray gun head 6 is located at the gas On the outside of the mixing pipe assembly 5, the spray gun head 6 is connected to the external gas pipeline. The gas mixing pipe assembly 5 includes a main delivery pipe 501 fixedly connected to the output end of the heat recovery pipe 3. The output end of the main delivery pipe 501 is fixedly connected to an I-shaped pipe 502. The output end of the I-shaped pipe 502 is located at the front and rear sides of the brick frame 10 and the stand assembly 11. By providing a heat recovery pipe 3 and a slow cooling pipe 8, air is passed into the slow cooling pipe 8 to absorb the temperature of the residual gas in the gas mixing pipe assembly 5 and the spray gun head 6, so as to slowly cool the product, and the residual hot air in the slow cooling pipe 8 can be sent to the tail end of the air curtain air pipe 2 through the heat recovery pipe 3, mixed with the airflow at the tail end of the air curtain air pipe 2, and enter the inner side of the gas mixing pipe assembly 5 to improve the overall heat utilization rate and the overall working life.

[0027] like Figures 1 to 7As shown, the stand assembly 11 includes a stand plate 1101 slidably connected to the inner surface of the support frame 1, a plurality of sliding frames 1102 are fixedly connected to the middle part of the stand plate 1101, a fixed slider 1103 is slidably connected to the inner surface of the sliding frame 1102, a lateral protrusion 1104 is slidably connected to the inner surface of the fixed slider 1103, a special-shaped clamping strip 1105 is slidably connected to the inner surface of the lateral protrusion 1104, a positioning block 1106 is fixedly connected to the inside of the lateral protrusion 1104, a return spring rod 1107 is fixedly connected to the upper and lower ends of the positioning block 1106, the other end of the return spring rod 1107 is fixedly connected to one end of the special-shaped clamping strip 1105 close to the positioning block 1106, and the lateral protrusion 1104 close to the fixed slider 1103 is fixedly connected to the inner surface of the fixed slider 1103. One end is fixedly connected with a spring connecting rod 1108, the other end of the spring connecting rod 1108 is fixedly connected with a guide baffle 1109, the end of the guide baffle 1109 close to the lateral protrusion 1104 is fixedly connected with a square column 1110, the other end of the square column 1110 is fixedly connected with a trapezoidal push block 1111, the outer surface of the trapezoidal push block 1111 is slidably connected with the inner surface of the lateral protrusion 1104, the outer surface of the trapezoidal push block 1111 is slidably connected with the outer surface of the special-shaped card strip 1105, the end of the guide baffle 1109 away from the square column 1110 is fixedly connected with an internal threaded sleeve 1112, the inner surface of the internal threaded sleeve 1112 is threadedly connected with a double-headed threaded column 1113, the outer surface of the double-headed threaded column 1113 is slidably connected with the fixed The inner surface of the block 1103 is rotatably connected, the middle outer surface of the double-headed threaded column 1113 is fixedly connected with a ring gear 1114, the outer surface of the ring gear 1114 is meshedly connected with a T-shaped rack slider 1115, the outer surface of the T-shaped rack slider 1115 is slidably connected to the inner surface of the fixed slider 1103, one end of the T-shaped rack slider 1115 is fixedly connected with an auxiliary threaded column 1116, the outer surface of the auxiliary threaded column 1116 is threadedly connected with a threaded sleeve knob 1117, the outer surface of the threaded sleeve knob 1117 is rotatably connected to the inner surface of the fixed slider 1103, the other end of the T-shaped rack slider 1115 is fixedly connected with an adjusting spring connecting rod 1118, the other end of the adjusting spring connecting rod 1118 is connected to the fixed slider The internal fixed connection of 1103 can drive the T-shaped rack slider 1115 to slide under the limit of the fixed slider 1103 by twisting the threaded sleeve knob 1117 through the threaded transmission of the auxiliary threaded column 1116 and the threaded sleeve knob 1117, and the meshing connection between the ring gear 1114 and the T-shaped rack slider 1115 can drive the double-headed threaded column 1113 to rotate. The rotation directions of the threads at both ends of the double-headed threaded column 1113 are set in opposite directions, which can drive the lateral protrusions 1104 on both sides to move in the same part, thereby improving the overall reliability and stability. At the same time, through the inclined sliding of the trapezoidal push block 1111 and the special-shaped card strip 1105, the lateral protrusions 1104 can slide relatively when they abut against the sliding groove on the sliding frame 1102.Further improve the overall stability and safety and improve the quality of finished products.

[0028] Working principle: Before use, the product is fixed and supported, and the threaded transmission of the auxiliary threaded column 1116 and the threaded sleeve knob 1117 can be used to twist the threaded sleeve knob 1117 to drive the T-shaped rack slider 1115 to slide under the limit of the fixed slider 1103, and the meshing connection between the ring gear 1114 and the T-shaped rack slider 1115 can drive the double-headed threaded column 1113 to rotate. The rotation directions of the threads at both ends of the double-headed threaded column 1113 are set in opposite directions, which can drive the lateral protrusions 1104 on both sides to move in the same part, thereby improving the overall reliability and stability. At the same time, through the inclined sliding of the trapezoidal push block 1111 and the special-shaped card strip 1105, the lateral protrusions 1104 can slide relative to each other when they abut against the sliding groove on the sliding frame 1102, thereby further improving the overall stability and safety, and improving the quality of the finished product. The brick frame 10 and the stand assembly 11 loaded with the product are sent in from the left end of the support frame 1, and the air curtain wind and stirring are generated through the air curtain wind duct 2 The wind and stirring wind make the heat of the upper and lower layers of the kiln head circulate, reducing the temperature difference between the upper and lower layers. The air curtain wind provides wind pressure toward the inner side of the kiln body, which plays a role in saving heat energy and preventing the kiln head product from heating up too quickly. Then it enters the gas mixing pipeline assembly 5, and oxygen is evenly supplemented to the spray gun head 6 through the main delivery pipeline 501 and the I-shaped pipeline 502 to increase the heating rate. After heating, it is sent to the rapid cooling pipeline 7, and a large amount of normal temperature air is sent into the kiln through the heat recovery pipeline 3 to start cooling, and then sent to the slow cooling pipeline 8. By providing the heat recovery pipeline 3 and the slow cooling pipeline 8, air is passed into the slow cooling pipeline 8 to absorb the temperature of the residual gas in the gas mixing pipeline assembly 5 and the spray gun head 6, and the product is slowly cooled. The residual hot air in the slow cooling pipeline 8 can be sent to the tail end of the air curtain wind pipeline 2 through the heat recovery pipeline 3, mixed with the airflow at the tail end of the air curtain wind pipeline 2, and enter the inner side of the gas mixing pipeline assembly 5 to improve the overall heat utilization rate and the overall working life.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A kiln with heat recovery function, characterized in that: The invention comprises a support frame (1), the left end of the support frame (1) is fixedly connected to an air curtain duct (2), the rear end of the support frame (1) is fixedly connected to a plurality of air pumps (4), the middle part of the support frame (1) is fixedly connected to a heat recovery duct (3), a gas mixing duct assembly (5), a rapid cooling duct (7), a slow cooling duct (8) and a kiln tail smoke exhaust duct (9) in sequence from left to right, the right end of the air curtain duct (2) is pipe-connected to the left end of the heat recovery duct (3), the right end of the heat recovery duct (3) is pipe-connected to the upper part of the slow cooling duct (8), the air curtain duct (2), the heat recovery duct (3), the gas mixing duct assembly (5), the rapid cooling duct (7), the slow cooling duct (8) and the kiln tail smoke exhaust duct (9) are all fixedly connected to the output end of the air pump (4), and the inner surface of the support frame (1) is slidably connected to a plurality of brick frames (10) and a plurality of stand assemblies (11).

2. The kiln with heat recovery function according to claim 1, characterized in that: The platform assembly (11) comprises a platform plate (1101) slidably connected to the inner surface of the support frame (1), a plurality of sliding frames (1102) are fixedly connected to the middle of the platform plate (1101), and a fixed slider (1103) is slidably connected to the inner surface of the sliding frame (1102).

3. The kiln with heat recovery function according to claim 2, characterized in that: The inner surface of the fixed sliding block (1103) is slidably connected to a lateral protrusion (1104), the inner surface of the lateral protrusion (1104) is slidably connected to a special-shaped clamping strip (1105), the interior of the lateral protrusion (1104) is fixedly connected to a positioning block (1106), the upper and lower ends of the positioning block (1106) are fixedly connected to a return spring rod (1107), and the other end of the return spring rod (1107) is fixedly connected to an end of the special-shaped clamping strip (1105) close to the positioning block (1106).

4. The kiln with heat recovery function according to claim 3, characterized in that: One end of the lateral protrusion (1104) close to the fixed sliding block (1103) is fixedly connected to a spring connecting rod (1108), and the other end of the spring connecting rod (1108) is fixedly connected to a guide baffle (1109), and one end of the guide baffle (1109) close to the lateral protrusion (1104) is fixedly connected to a square column (1110), and the other end of the square column (1110) is fixedly connected to a trapezoidal push block (1111).

5. The kiln with heat recovery function according to claim 4, characterized in that: The outer surface of the trapezoidal push block (1111) is slidably connected to the inner surface of the lateral protrusion (1104), and the outer surface of the trapezoidal push block (1111) is slidably connected to the outer surface of the special-shaped clamping strip (1105).

6. The kiln with heat recovery function according to claim 5, characterized in that: An end of the guide baffle (1109) away from the square column (1110) is fixedly connected to an internal threaded sleeve (1112), the inner surface of the internal threaded sleeve (1112) is threadedly connected to a double-headed threaded column (1113), and the outer surface of the double-headed threaded column (1113) is rotatably connected to the inner surface of the fixed slider (1103).

7. The kiln with heat recovery function according to claim 6, characterized in that: The middle outer surface of the double-headed threaded column (1113) is fixedly connected to a ring gear (1114), the outer surface of the ring gear (1114) is meshingly connected to a T-shaped rack slider (1115), the outer surface of the T-shaped rack slider (1115) is slidably connected to the inner surface of the fixed slider (1103), one end of the T-shaped rack slider (1115) is fixedly connected to an auxiliary threaded column (1116), the outer surface of the auxiliary threaded column (1116) is threadedly connected to a threaded sleeve knob (1117), the outer surface of the threaded sleeve knob (1117) is rotatably connected to the inner surface of the fixed slider (1103), the other end of the T-shaped rack slider (1115) is fixedly connected to an adjustment spring connecting rod (1118), the other end of the adjustment spring connecting rod (1118) is fixedly connected to the inside of the fixed slider (1103).

8. The kiln with heat recovery function according to claim 2, characterized in that: A spray gun head (6) is fixedly connected to the inner surface of the middle part of the support frame (1); the spray gun head (6) is located outside the gas mixing pipeline assembly (5); and the spray gun head (6) is connected to an external gas pipeline.

9. The kiln with heat recovery function according to claim 2, characterized in that: The gas mixing pipeline assembly (5) comprises a main delivery pipeline (501) fixedly connected to the output end of the heat recovery pipeline (3); the output end of the main delivery pipeline (501) is fixedly connected to an I-shaped pipeline (502); the output end of the I-shaped pipeline (502) is located at the front and rear sides of the brick frame (10) and the platform assembly (11).

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