A kiln waste heat utilization device and an energy-saving kiln

Abstract

The application relates to the field of kilns, and particularly provides a kiln waste heat utilization device and an energy-saving kiln. The waste heat utilization device comprises an outer heat preservation shell, the outer heat preservation shell is a straight tunnel-shaped structure with openings arranged at two ends, and a chamber of the kiln is arranged inside the outer heat preservation shell; an inner heat preservation shell, the inner heat preservation shell is a straight tunnel-shaped structure with openings arranged at two ends, the inner heat preservation shell is arranged on the inner side of the outer heat preservation shell, a preheating section of the kiln is located above the inner heat preservation shell, a combustion section and a cooling section of the kiln are located inside the inner heat preservation shell, the top of the inner heat preservation shell is communicated with the upper side of the inner heat preservation shell and the inside of the outer heat preservation shell through a top communication pipe, and a gap is arranged between the outer wall of the inner heat preservation shell and the inner wall of the outer heat preservation shell; the application can improve the waste heat utilization efficiency, reduces the equipment cost, the hot air in the outer heat preservation shell also plays a heat insulation role, and heat loss is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of kiln, in particular to a kiln waste heat utilization device and energy-saving kiln. BACKGROUND

[0002] As a kind of using fuel combustion or electric energy conversion generates heat, to material, carries out heating, calcination, melting, heat treatment and other processes The core thermal equipment of process, its development and human civilization process, industrial technology innovation depth binding, widely used in ceramics, building materials, metallurgy, chemical industry, glass and many other key industry fields, it is the basic equipment of promoting material processing and industrial production.

[0003] At present, the energy-saving technology of kiln mainly concentrates on combustion technology and waste heat utilization technology, the principle of waste heat utilization technology is to collect the air of combustion zone and cooling zone through pipeline and transport it to waste heat zone, due to the length of kiln is several tens of meters or even several hundred meters, so that the pipeline of hot air is longer, there is heat loss in the process of pipeline conveying hot air, which leads to low waste heat utilization rate. Therefore, the present application provides a kiln waste heat utilization device and energy-saving kiln. SUMMARY

[0004] The purpose of the present application is to provide a kiln waste heat utilization device and energy-saving kiln to solve the problem of low waste heat utilization rate of the present kiln.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A kiln waste heat utilization device, the waste heat utilization device comprises:

[0007] An outer insulation shell, the outer insulation shell is a straight tunnel shape with openings at both ends, and the chamber of the kiln is arranged inside the outer insulation shell;

[0008] An inner insulation shell, the inner insulation shell is a straight tunnel shape with openings at both ends, the inner insulation shell is arranged on the inner side of the outer insulation shell, the preheating section of the kiln is located above the inner insulation shell, the combustion section and the cooling section of the kiln are located inside the inner insulation shell, the top of the inner insulation shell is communicated with the upper side of the inner insulation shell and the inside of the outer insulation shell through a top communication pipe, and there is a gap between the outer wall of the inner insulation shell and the inner wall of the outer insulation shell.

[0009] Further, the waste heat utilization device further comprises:

[0010] Two air deflectors, the air deflectors are U-shaped plates, two air deflectors are arranged on the inner side of the inner insulation shell, the openings of two air deflectors are oppositely arranged, there is a gap between the air deflector and the inner wall of the inner insulation shell, and the top communication pipe is located between two air deflectors.

[0011] Further, the waste heat utilization device further comprises:

[0012] The air uniformizing plate is located between the upper roller and the inner heat preservation shell. The air discharged from the top communication pipe first blows to the air uniformizing plate and then blows to the upper roller after being uniformized at the air uniformizing plate.

[0013] Further, the air uniformizing plate comprises upper arc plates and lower arc plates. The upper arc plates and the lower arc plates are long strip structures with arc-shaped cross sections. The arc-shaped openings of the upper arc plates and the lower arc plates are oppositely arranged, and the upper arc plates and the lower arc plates are staggered. The upper arc plates and the lower arc plates are arrayed. The distance between adjacent upper arc plates is less than the width of the lower arc plates.

[0014] Further, the kiln waste heat utilization device is provided. The combustion section and the cooling section of the kiln are arranged inside the inner heat preservation shell. The preheating section of the kiln is arranged above the inner heat preservation shell and inside the outer heat preservation shell. The feeding and discharging positions of the kiln are located at the same end of the outer heat preservation shell. The position of the outer heat preservation shell away from the discharging position is closed. The kiln further comprises:

[0015] The lower roller and the upper roller are linearly arrayed inside the outer heat preservation shell. The lower roller penetrates the outer heat preservation shell and the inner heat preservation shell. The upper roller penetrates the outer heat preservation shell and is located outside the inner heat preservation shell. The outer part of the outer heat preservation shell is provided with a roller driving mechanism for driving the rotation of the lower roller and the upper roller.

[0016] The burner is fixedly connected to the inside of the outer heat preservation shell. The nozzle located thereon penetrates the side wall of the inner heat preservation shell and is arranged in the area of the inner heat preservation shell in the combustion section.

[0017] The cooling pipeline is arranged in the cooling section of the outer heat preservation shell and is used for cooling the material located in the cooling section.

[0018] The lifting mechanism is provided with a lifting support and a power mechanism. The power mechanism is located outside the outer heat preservation shell. The power mechanism drives the lifting support to lift in the outer heat preservation shell. The lifting support sends the material on the upper roller to the lower roller.

[0019] Further, the air inlet pipe of the burner is located between the outer heat preservation shell and the inner heat preservation shell. The air inlet pipe is provided with a plurality of heating fins.

[0020] Further, the lifting mechanism comprises:

[0021] Lifting support, which is rotatably connected with lifting rollers, the lifting rollers are arrayed, the distribution mode of the lifting rollers is same with the distribution mode of the lower rollers, driving wheels are rotatably connected on the inner wall of the outer thermal insulation shell, the driving wheels are located on the upper and lower sides of the lifting support, when the lifting rollers are located at the same level with the lower rollers or upper rollers, the driving wheels are tangent to the lifting rollers and drive the lifting rollers to rotate, the driving wheels are driven to rotate by the roller driving mechanism installed outside;

[0022] Lifting rod, one end of which is fixedly connected to the lifting support, the lifting rod penetrates the outer thermal insulation shell above the lifting support, and the other end of the lifting rod away from the lifting support is fixedly connected with a lifting plate;

[0023] Power mechanism, which is fixedly connected to the outer thermal insulation shell, and is used for driving the lifting plate to lift to drive the lifting support to lift.

[0024] Further, the lifting mechanism comprises:

[0025] Telescopic module;

[0026] Lifting lug plate, which is connected to the lifting plate, the telescopic module is connected to the outer thermal insulation shell, the end of the telescopic module is connected with the lifting lug plate, and the telescopic module is used for controlling the lifting lug plate to lift.

[0027] Further, the lifting lug plate is fixedly connected to the output end of the power mechanism, the lifting lug plate is arranged in parallel with the lifting plate, a guide shaft is arranged on the lifting lug plate, the guide shaft penetrates the lifting plate and is slidably connected with the lifting plate, and the lifting mechanism further comprises:

[0028] Compression spring, which is located between the lifting lug plate and the lifting plate, is in a compressed state, and the lifting lug plate lifts the lifting plate.

[0029] Further, the energy-saving kiln further comprises:

[0030] Heat dissipation mechanism, which is installed on the lifting lug plate, drives air to flow through the compression spring.

[0031] Compared with the prior art, the energy-saving kiln has the following beneficial effects:

[0032] The kiln waste heat utilization device disclosed by the embodiment of the present application is characterized in that: an inner heat preservation shell is arranged in the combustion section and the cooling section, an outer heat preservation shell is arranged outside the inner heat preservation shell, the preheating section of the kiln is arranged inside the outer heat preservation shell, and a gap is arranged between the inner heat preservation shell and the outer heat preservation shell. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The structure diagram of the kiln waste heat utilization device disclosed by the embodiment 1 of the present application is shown.

[0034] Figure 2 The exploded view of the kiln waste heat utilization device disclosed by the embodiment 1 of the present application is shown.

[0035] Figure 3 The partial enlarged view of the I in the figure is shown. Figure 2

[0036] Figure 4 The front view of the kiln waste heat utilization device disclosed by the embodiment 1 of the present application is shown.

[0037] Figure 5 The sectional view of the A-A in the figure is shown. Figure 4

[0038] Figure 6 The structure diagram of the energy-saving kiln disclosed by the embodiment 2 of the present application is shown.

[0039] Figure 7 The exploded view of the energy-saving kiln disclosed by the embodiment 2 of the present application is shown.

[0040] Figure 8 The front view of the energy-saving kiln disclosed by the embodiment 2 of the present application is shown.

[0041] Figure 9 The sectional view of the B-B in the figure is shown. Figure 8

[0042] Figure 10 The sectional view of the C-C in the figure is shown. Figure 8

[0043] The structure diagram of the lifting mechanism in the energy-saving kiln disclosed by the embodiment 2 of the present application is shown. Figure 11

[0044] The exploded view of the heat dissipation mechanism in the energy-saving kiln disclosed by the embodiment 2 of the present application is shown. Figure 12

[0045] ​​​​Figure 13 Figure 1 is a schematic diagram of the connection of the internal components of the heat dissipation mechanism of the energy-saving kiln disclosed in Embodiment 2 of the present application.

[0046] Reference signs:

[0047] 100, outer insulation shell; 101, side insulation wall; 102, insulation roof; 103, insulation floor; 104, insulation pipe; 110, lower roller; 120, outer fixed shell; 121, fixed lug; 130, rear insulation plate; 140, roller driving mechanism; 200, inner insulation shell; 201, air deflector; 202, top communication pipe; 203, support strip; 300, upper roller; 310, air equalization plate; 311, upper arc plate; 312, lower arc plate; 400, burner; 410, mixing pipe; 420, nozzle; 430, air inlet pipe; 440, heating fin; 500, heat conduction pipeline; 510, main pipeline; 520, branch pipeline; 600, lifting mechanism; 610, lifting bracket; 611, lifting roller; 612, roller bracket; 613, driving wheel; 614, power rod; 615, lower connecting pipe; 620, lifting rod; 630, lifting plate; 631, upper connecting pipe; 632, guide sleeve; 640, power mechanism; 641, telescopic module; 642, lifting lug plate; 643, guide shaft; 644, compression spring; 700, heat dissipation mechanism; 710, heat dissipation shell; 711, end cover; 720, connecting shaft; 730, driving gear; 740, driven shaft; 750, ratchet module; 760, snap spring; 770, fan blade mechanism; 780, speed increaser. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0049] Embodiment 1

[0050] As shown in Figure 1 and Figure 5 An embodiment of the present application provides a kiln waste heat utilization device, which comprises:

[0051] An outer insulation shell 100, which is a straight tunnel shape with openings at both ends, and a chamber of a kiln is arranged inside the outer insulation shell 100;

[0052] The inner thermal insulation shell 200 is a straight tunnel shape with openings at both ends, which is arranged inside the outer thermal insulation shell 100, the preheating section of the kiln is located above the inner thermal insulation shell 200, the combustion section and the cooling section of the kiln are located inside the inner thermal insulation shell 200, the top of the inner thermal insulation shell 200 is communicated with the inside of the outer thermal insulation shell 100 through the top communication pipe 202, and the outer wall of the inner thermal insulation shell 200 and the inner wall of the outer thermal insulation shell 100 have a gap.

[0053] In the embodiment, the outer thermal insulation shell 100 is the outer thermal insulation layer of the kiln, the inner thermal insulation shell 200 is the inner thermal insulation layer, the lower roller 110 of the kiln is arranged inside the inner thermal insulation shell 200, the upper roller 300 is arranged above the inner thermal insulation shell 200, the kiln is a double-layer kiln, the open end of the kiln is provided with a feeding port and a discharging port, and the closed end of the kiln is provided with a lifting mechanism 600 for driving the upper layer of materials to enter the lower layer. When feeding, the materials are conveyed to the inside of the kiln by the upper roller 300 and are sent into the combustion section and the cooling section located inside the inner thermal insulation shell 200 by the lifting mechanism 600. Since the inside of the inner thermal insulation shell 200 and the preheating section located above the inner thermal insulation shell 200 are communicated, the hot air of the combustion section and the cooling section enters the preset chamber through the top communication pipe 202, the materials of the preheating section are first preheated and then sent into the combustion section by the lifting mechanism 600, the materials in the combustion section are sent into the cooling section by the lower roller 110, since the preheating section is located above the combustion section and the cooling section and the two are directly communicated through the top communication pipe 202, the hot air of the combustion section and the preheating section can be sent into the preheating section, the transmission of the pipeline is cancelled, in the process that the hot air of the combustion section and the preheating section enters the preheating section, the heat loss is not generated, since the combustion section and the cooling section are both located inside the inner thermal insulation shell 200, when the positions of the combustion section and the cooling section are arranged, the combustion section must be close to the closed end and the cooling section must be close to the feeding port (the feeding port and the discharging port are located at the same end of the outer thermal insulation shell 100), so that the preheating process of the materials is step-by-step preheating, the cold stimulation received by the materials is reduced, and the damage caused by the sudden temperature rise of the materials is prevented. Since the outer thermal insulation shell 100 and the inner thermal insulation shell 200 have a gap, the hot air after preheating fills in the gap between the outer thermal insulation shell 100 and the inner thermal insulation shell 200, a hot air layer with a certain heat insulation effect is formed between the outer thermal insulation shell 100 and the inner thermal insulation shell 200, the heat preservation effect of the kiln is improved, and the utilization rate of the waste heat is further improved.

[0054] This invention discloses a kiln waste heat utilization device. This device consists of an inner insulation shell 200 for the combustion and cooling sections, and an outer insulation shell 100 outside the inner insulation shell 200. The kiln preheating section is placed inside the outer insulation shell 100. A gap exists between the inner insulation shell 200 and the outer insulation shell 100. During kiln operation, the hot air inside the inner insulation shell 200 is directly discharged into the outer insulation shell 100 to preheat the materials, reducing heat loss. This eliminates the need for piping, improves waste heat utilization efficiency, and reduces equipment costs. Furthermore, the hot air inside the outer insulation shell 100 also acts as insulation, further reducing heat loss.

[0055] Specifically, in this embodiment, such as Figure 2 As shown, the outer insulation shell 100 includes a side insulation wall 101, an insulation top 102, and an insulation bottom plate 103. The side insulation wall 101, insulation top 102, and insulation bottom plate 103 are the insulation walls of kilns in the prior art. For example, the side insulation wall 101, insulation top 102, and insulation bottom plate 103 are made of refractory bricks. The side insulation wall 101 is vertically arranged and located on both sides of the inner insulation shell 200. The insulation top 102 is an arc-shaped top, and the insulation bottom plate 103 is a straight bottom plate. The side insulation wall 101, the insulation top 102, and the insulation bottom plate 103 form a tunnel-shaped structure.

[0056] The inner insulation shell 200 is a tunnel-shaped structure made of refractory bricks.

[0057] Preferably, the inner insulation shell 200 is fixed to the interior of the outer insulation shell 100 by a support structure (such as a support frame or support base made of high-temperature resistant material, such as a support bar 203, which is disposed at the bottom of the inner insulation shell 200), and both the upper and lower sides of the inner insulation shell 200 are arc-shaped.

[0058] As a preferred embodiment in the present embodiment, the waste heat utilization device further comprises two air deflectors 201, the air deflectors 201 are U-shaped plates, the two air deflectors 201 are arranged inside the inner thermal insulation shell 200, the openings of the two air deflectors 201 are oppositely arranged, a gap is arranged between the air deflectors 201 and the inner wall of the inner thermal insulation shell 200, the top communication pipe 202 is located between the two air deflectors 201, the hot air located at the upper half of the inner thermal insulation shell 200 is discharged from the top communication pipe 202 to the outside of the inner thermal insulation shell 200, the hot air located at the lower half of the inner thermal insulation shell 200 enters the gap between the air deflectors 201 and the inner thermal insulation shell 200 from between the two top communication pipes 202 and then is discharged from the top communication pipe 202 to the outside of the inner thermal insulation shell 200, the hot air entering the gap between the air deflectors 201 and the inner thermal insulation shell 200 further plays a role of heat insulation, reduces the air escaping from the side edges of the outer thermal insulation shell 100 and the inner thermal insulation shell 200, and forms a heat insulation layer by using the hot air, so as to further utilize the waste heat and reduce heat loss, and the air deflectors 201 are fixedly connected to the inside of the inner thermal insulation shell 200 by ceramic anchor rods.

[0059] The top communication pipe 202 is a ceramic pipe, and the top communication pipe 202 is pre-buried in the inside of the inner thermal insulation shell 200.

[0060] As a preferred embodiment in the present embodiment, the waste heat utilization device further comprises an air equalizing plate 310, the air equalizing plate 310 is located between the upper roller 300 and the inner thermal insulation shell 200, the air discharged from the top communication pipe 202 first blows to the air equalizing plate 310 and then blows to the upper roller 300 after being equalized at the air equalizing plate 310, so that the hot air blowing to the upper roller 300 can uniformly blow to the material.

[0061] Preferably, the air equalizing plate 310 comprises an upper arc plate 311 and a lower arc plate 312, the upper arc plate 311 and the lower arc plate 312 are both long strip structures with arc-shaped cross sections, the arc-shaped openings of the upper arc plate 311 and the lower arc plate 312 are oppositely arranged, and the upper arc plate 311 and the lower arc plate 312 are staggered, the upper arc plate 311 and the lower arc plate 312 are both arranged in an array, the distance between adjacent upper arc plates 311 is smaller than the width of the lower arc plate 312, the air discharged from the top communication pipe 202 blows to the upper arc plate 311, blows to the lower arc plate 312 under the blockage of the upper arc plate 311, and is discharged from the gap between adjacent upper arc plates 311, so as to form a plurality of wind walls arranged in parallel, and the wind walls are perpendicular to the advancing direction of the material, so as to uniformly preheat the material when the material advances.

[0062] The ends of the upper arc plate 311 and the lower arc plate 312 are embedded in the inner wall of the outer insulation shell 100.

[0063] Example 2

[0064] As another embodiment of the present invention, such as Figures 6 to 10 As shown, this embodiment discloses an energy-saving kiln, which includes the kiln waste heat utilization device described in Embodiment 1. The combustion section and cooling section of the kiln are located inside the inner insulation shell 200, and the preheating section of the kiln is located above the inner insulation shell 200 and inside the outer insulation shell 100. The feeding and discharging positions of the kiln are located at the same end of the outer insulation shell 100, and the outer insulation shell 100 is closed off away from the discharging position. The kiln also includes:

[0065] The lower roller 110 and the upper roller 300 are arranged in a linear array inside the outer insulation shell 100. The lower roller 110 penetrates the outer insulation shell 100 and the inner insulation shell 200. The upper roller 300 penetrates the outer insulation shell 100 and is located outside the inner insulation shell 200. A roller drive mechanism 140 for driving the lower roller 110 and the upper roller 300 to rotate is provided on the outside of the outer insulation shell 100.

[0066] The burner 400 is fixedly connected to the interior of the outer insulation shell 100, and the nozzle 420 located thereon passes through the side wall of the inner insulation shell 200 and is disposed in the combustion section area inside the inner insulation shell 200.

[0067] Cooling pipes (not shown in the figure) are installed in the cooling section on the outer insulation shell 100 and are used to cool the material located in the cooling section;

[0068] A lifting mechanism 600 is provided, which is equipped with a lifting bracket 610 and a power mechanism 640. The power mechanism 640 is located outside the outer insulation shell 100. The power mechanism 640 drives the lifting bracket 610 to move up and down inside the outer insulation shell 100. The lifting bracket 610 feeds the material on the upper roller 300 onto the lower roller 110.

[0069] Specifically, in this embodiment, the lower roller 110, the upper roller 300, and the roller drive mechanism 140 are all structures of kilns in the prior art. An outer fixed shell 120 is provided on the outside of the outer insulation shell 100. The outer fixed shell 120 is a steel shell. The connection method between the lower roller 110 and the outer fixed shell 120 is the prior art. The end of the lower roller 110 away from the feed is closed by the rear insulation plate 130. The rear insulation plate 130 is made of refractory bricks. The rear insulation plate 130 and the lower roller 110 are fixedly connected.

[0070] The roller drive mechanism 140 drives the lower roller 110 and the upper roller 300 to rotate. The roller drive mechanism 140 is fixedly connected to the outside of the outer fixed shell 120. If the roller drive mechanism 140 is a sprocket structure, the ends of the lower roller 110 and the upper roller 300 are also provided with sprockets. The roller drive mechanism 140 drives the lower roller 110 and the upper roller 300 to rotate synchronously through the sprocket structure, thereby controlling the material to enter from the feed port and be conveyed along the preheating section to the lifting mechanism 600. Then, the lifting mechanism 600 sends the material into the combustion section, and the lower roller 110 sends it into the cooling section, and then it is sent out from the discharge port.

[0071] In this embodiment, the burner 400 is a prior art technology, such as... Figure 3 As shown, the burner 400 includes a mixing pipe 410, a nozzle 420, an air inlet pipe 430, and heating fins 440. The mixing pipe 410 is fixedly connected to the outer fixed shell 120. Both the mixing pipe 410 and the air inlet pipe 430 are located between the outer insulation shell 100 and the inner insulation shell 200. Multiple heating fins 440 are provided, and the multiple heating fins 440 are arranged in parallel on the air inlet pipe 430. The heating fins 440 are used to increase the air inlet pipe. The contact area between the 430 and the hot air is increased to heat the air. Both the mixing pipe 410 and the air inlet pipe 430 have interfaces on the outside of the outer insulation shell 100. The gas is connected to the mixing pipe 410 and the air is connected to the air inlet pipe 430. The air and gas are mixed in the mixing pipe 410. The mixed gas and air are sprayed into the inside of the inner insulation shell 200 from the nozzle 420. The nozzle 420 is also provided with an ignition structure for igniting the mixed gas.

[0072] The heating fin 440 is made of metal disc material and is fixedly connected to the air intake pipe 430 by welding.

[0073] It should be noted that the feed inlet and the discharge outlet are located at the same end of the outer insulation shell 100, but not at the same position, the feed inlet is located above and the discharge outlet is located below, or the length of the preheating section is less than the sum of the lengths of the combustion section and the cooling section, so that the discharge outlet and the feed inlet are staggered.

[0074] The cooling pipeline is installed on the outer fixed shell 120 and used to pass cooling medium into the cooling section.

[0075] As a preferred embodiment in the present embodiment, the energy-saving kiln further comprises a heat conduction pipeline 500, the heat conduction pipeline 500 comprises a main pipeline 510 and branch pipelines 520, the branch pipelines 520 are bent pipes, the branch pipelines 520 are connected to the insulation top 102, a plurality of branch pipelines 520 are provided, the main pipeline 510 is connected with the branch pipelines 520, the branch pipelines 520 are used to collect the exhaust gas in the outer insulation shell 100 and pass into the inside of the main pipeline 510, the main pipeline 510 passes the exhaust gas into an exhaust gas treatment device, and the heat conduction pipeline 500 is a prior art.

[0076] As a preferred embodiment in the present embodiment, as shown in Figures 7 to 11 The lifting mechanism 600 comprises:

[0077] The lifting support 610 is rotatably connected with lifting rollers 611, the lifting rollers 611 are arranged in an array, the distribution mode of the lifting rollers 611 is the same as that of the lower rollers 110, and a driving wheel 613 is also rotatably connected to the inner wall of the outer insulation shell 100, the driving wheel 613 is located on the upper and lower sides of the lifting support 610, when the lifting rollers 611 are located at a position flush with the lower rollers 110 or the upper rollers 300, the driving wheel 613 is tangent to the lifting rollers 611 and drives the rotation of the lifting rollers 611 when rotating, and the driving wheel 613 is driven to rotate by a roller driving mechanism 140 installed outside;

[0078] The lifting rod 620 is fixedly connected to the lifting support 610 at one end, penetrates the outer insulation shell 100 above the lifting support 610, and is fixedly connected with a lifting plate 630 at an end away from the lifting support 610;

[0079] The power mechanism 640 is fixedly connected to the outer fixed shell 120 and used to drive the lifting plate 630 to lift to drive the lifting support 610 to lift.

[0080] In the embodiment, the lifting support 610 further comprises roller supports 612 located at both ends of the lifting rollers 611, the roller supports 612 are in strip shape, a plurality of circular hole structures connecting the lifting rollers 611 are arranged on the roller supports 612, the lifting rollers 611 are rotationally connected into the circular hole structures, a blocking ring structure is arranged on the lifting rollers 611 to prevent the lifting rollers 611 from moving along the axis, the blocking ring structure is an integral structure with the lifting rollers 611, the driving wheels 613 are in disc structure, the power rods 614 and the driving wheels 613 are an integral structure, the power rods 614 and the driving wheels 613 are concentrically arranged, the power rods 614 pass through the side wall of the outer thermal insulation shell 100 and are rotationally connected to the outer thermal insulation shell 100, the power rods 614 are connected with the roller driving mechanism 140 fixedly connected to the outer fixed shell 120, so that the lifting rollers 611 and the lower rollers 110 or the upper rollers 300 rotate synchronously, in the embodiment, since the lifting rollers 611 are driven to rotate by the driving wheels 613 and the power rods 614, the power rods 614 are driven to rotate by the separate roller driving mechanism 140, so as to control the rotating speed of the lifting rollers 611; the driving wheels 613 are located on the outer thermal insulation shells 100 on both sides, and the driving wheels 613 are distributed in two rows in up and down directions, when the lifting rollers 611 rise to the position coplanar with the upper rollers 300, the lifting rollers 611 contact with the upper driving wheels 613, when the lifting rollers 611 descend to the position coplanar with the lower rollers 110, the lifting rollers 611 contact with the lower driving wheels 613, the driving wheels 613 are provided with lower connecting pipes 615, the lifting plates 630 are in flat plate structure, the lifting plates 630 are provided with upper connecting pipes 631, the lifting rods 620 are fixedly connected to the lower connecting pipes 615 and the upper connecting pipes 631 by bolts, so as to connect the lifting support 610 and the lifting plates 630.

[0081] Preferably, in the embodiment, the thermal insulation top 102 located above the lifting support 610 is provided with a thermal insulation pipe 104, the lifting rods 620 are slidingly connected inside the thermal insulation pipe 104, the thermal insulation pipe 104 plays a role of heat insulation.

[0082] As a preferred embodiment in the embodiment, the lifting mechanism 600 comprises a telescopic module 641 and a lifting lug plate 642, the lifting lug plate 642 is fixedly connected to the lifting plate 630, the telescopic module 641 is fixedly connected to the outer fixed shell 120, the end of the telescopic module 641 is fixedly connected with the lifting lug plate 642, the telescopic module 641 is used to control the lifting lug plate 642 to lift, so as to control the lifting plate 630 to lift.

[0083] Preferably, in this embodiment, the telescopic module 641 is a hydraulic telescopic mechanism, a first flow valve and a first stop valve are arranged on the liquid inlet circuit of the telescopic module 641, a second flow valve, a flow control valve and a second stop valve are arranged on the liquid outlet circuit of the telescopic module 641, the liquid outlet circuit of the telescopic module 641 is directly connected to an oil tank for storing hydraulic oil, the first flow valve, the first stop valve, the second flow valve, the flow control valve and the first stop valve are all controlled by the control structure of the kiln (such as the computer of the control center, the industrial computer, etc.), when the lifting plate 630 is controlled to rise, the second stop valve is closed, the connected hydraulic pump of the telescopic module 641 fills the telescopic module 641 with hydraulic oil, the output end of the telescopic module 641 extends, the telescopic module 641 controls the lifting plate 630 to rise, and at the same time, the first flow valve synchronously detects the flow of the hydraulic oil filled in the telescopic module 641, when the telescopic module 641 is filled with a preset volume of hydraulic oil, the hydraulic pump stops working and the first stop valve is closed; when the lifting plate 630 is lowered, the second stop valve is opened, the output end of the telescopic module 641 is retracted under the action of the gravity of the lifting plate 630, the lifting rod 620, the lifting support 610 and the material, at the same time, the second flow control valve adjusts the flow of the liquid outlet circuit, so as to control the descending speed of the lifting support 610, the second flow valve synchronously detects the liquid outlet flow of the telescopic module 641, after a preset volume of hydraulic oil is discharged from the telescopic module 641, the second stop valve is closed, and the output shaft of the telescopic module 641 is lowered by a preset height, that is, the lifting support 610 is lowered by a preset height.

[0084] Preferably, a plurality of telescopic modules 641 are arranged, the two ends of the telescopic module 641 are respectively hinged to the lifting lug plate 642 and the outer fixed shell 120, a fixed lug 121 is arranged on the outer fixed shell 120, a lug structure connected thereto is arranged on the lifting lug plate 642, the end part of the telescopic module 641 is connected to the lifting lug plate 642 and the outer fixed shell 120 through a pin shaft structure, the telescopic module 641 is arranged in an inclined manner, in this embodiment, two telescopic modules 641 are arranged in a mirror image manner.

[0085] Embodiment 3

[0086] As another embodiment of the present application, the difference between this embodiment and embodiment 1 is that the lifting mechanism 600 further comprises a compression spring 644, the lifting lug plate 642 and the compression spring 644 are used to control the contact force of the lifting roller 611 and the driving wheel 613, so as to prevent the pressure of the lifting roller 611 and the driving wheel 613 from being too large or too small.

[0087] In this embodiment, the lifting lug plate 642 is fixedly connected to the output end of the power mechanism 640, the lifting lug plate 642 is arranged in parallel with the lifting plate 630, a guide shaft 643 is arranged on the lifting lug plate 642, the guide shaft 643 penetrates through the lifting plate 630 and is in sliding connection with the lifting plate 630, the guide shaft 643 and the lifting plate 630 are arranged vertically, a guide sleeve 632 is arranged on the lifting plate 630, the guide sleeve 632 is sleeved on the guide shaft 643, a compression spring 644 is located between the lifting lug plate 642 and the lifting plate 630, the compression spring 644 is in a compressed state, the lifting lug plate 642 lifts the lifting plate 630, the compression force of the compression spring 644 can be controlled by controlling the distance between the lifting lug plate 642 and the lifting plate 630, because the driving wheel 613 is in a preset position and the driving wheel 613 and the lifting roller 611 are in rigid connection, the contact force between the lifting roller 611 and the driving wheel 613 can be controlled by controlling the compression force of the compression spring 644 by controlling the height of the lifting lug plate 642, one end of the guide shaft 643 away from the lifting lug plate 642 is connected with a nut structure, and the nut structure plays a limiting role.

[0088] As a preferred embodiment in this embodiment, in order to improve the service life of the compression spring 644, the energy-saving kiln further comprises:

[0089] A heat dissipation mechanism 700 is arranged on the lifting lug plate 642, and the heat dissipation mechanism 700 drives air to flow through the compression spring 644.

[0090] Preferably, as shown in Figure 12 and Figure 13 The heat dissipation mechanism 700 comprises:

[0091] A heat dissipation shell 710 is fixedly connected to the lifting lug plate 642, and the heat dissipation shell 710 is a gourd-shaped shell formed by the intersection of two circles.

[0092] A connecting shaft 720 is rotatably connected to the inside of the heat dissipation shell 710, the connecting shaft 720 is provided with two, and the two connecting shafts 720 are fixedly connected to the ends of the telescopic module 641, respectively, the axis of the connecting shaft 720 passes through the rotation center of the lifting lug plate 642 at the output end of the telescopic module 641, and the end of the connecting shaft 720 is fixedly connected with a driving gear 730.

[0093] A driven shaft 740 is rotatably connected inside the heat dissipation shell 710, the driven shaft 740 is located between the two driving gears 730, a ratchet module 750 is fixed on the driven shaft 740, the ratchet module 750 is externally provided with a tooth structure meshing with the driving gear 730, when the lifting lug plate 642 is lifted, the driving gear 730 drives the driven shaft 740 to rotate in the same direction through the ratchet module 750, and the end of the driven shaft 740 is fixedly connected with a fan mechanism 770.

[0094] Specifically, in the embodiment, the heat dissipation shell 710 is fixedly connected to the lifting lug plate 642 through screws, the connecting shaft 720 is a hinge shaft of the telescopic module 641 and the lifting lug plate 642, the connecting shaft 720 is fixedly connected with the telescopic module 641 through interference connection, the connecting shaft 720 is rotatably connected with the lifting lug plate 642, the driving gear 730 is a straight gear, the driving gear 730 is fixedly connected to the connecting shaft 720 through a key shaft, the inner ring of the ratchet module 750 is fixedly connected to the driven shaft 740, and the outer ring of the ratchet module 750 meshes with the driving gear 730, when the lifting lug plate 642 is lifted, the left connecting shaft 720 drives the driven shaft 740 to rotate, the right connecting shaft 720 cannot drive the driven shaft 740 to rotate under the action of the ratchet module 750, when the lifting lug plate 642 is lowered, the right connecting shaft 720 drives the driven shaft 740 to rotate, and the left connecting shaft 720 cannot drive the driven shaft 740 to rotate under the action of the ratchet module 750, so that the fan mechanism 770 can generate wind no matter whether the lifting lug plate 642 is lifted or lowered.

[0095] The mouth of the heat dissipation shell 710 is fixedly provided with an end cover 711.

[0096] The driven shaft 740 is provided with a clamping spring 760, and the clamping spring 760 is used for fixing the ratchet module 750.

[0097] Preferably, a speed increaser 780 is further fixed inside the heat dissipation shell 710, the driven shaft 740 is fixedly connected to the input end of the speed increaser 780, and the fan mechanism 770 is fixedly connected to the output end of the speed increaser 780, the speed increaser 780 is a planetary gear speed increasing mechanism, and is used for driving the fan mechanism 770 to rapidly rotate.

[0098] The terminology used by the inventor in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

[0099] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited by these terms. These terms are used only to distinguish one piece of information from another. For example, a first information could be termed a second information, and, similarly, a second information could be termed a first information without departing from the scope of the present invention. As used herein, the word "if' can be construed to mean "when" or "upon" or "in response to determining" depending on the context.

[0100] While the embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. A device for utilizing waste heat from a kiln, characterized in that, The waste heat recovery device includes: The outer insulation shell is a straight tunnel shape with openings at both ends, and the kiln chamber is located inside the outer insulation shell; The inner insulation shell is a straight tunnel shape with openings at both ends. The inner insulation shell is located inside the outer insulation shell. The preheating section of the kiln is located above the inner insulation shell. The combustion section and cooling section of the kiln are located inside the inner insulation shell. The top of the inner insulation shell is connected to the top of the inner insulation shell and the interior of the outer insulation shell through a top connecting pipe. There is a gap between the outer wall of the inner insulation shell and the inner wall of the outer insulation shell. Two air guide plates, each U-shaped, are disposed inside the inner insulation shell. The openings of the two air guide plates are opposite to each other. A gap is provided between the air guide plates and the inner wall of the inner insulation shell. The top connecting pipe is located between the two air guide plates. An air distribution plate is located between the upper roller and the inner insulation shell. The air discharged from the top connecting pipe first blows towards the air distribution plate, and after being homogenized at the air distribution plate, it blows towards the upper roller. The wind distribution plate includes an upper arc plate and a lower arc plate. Both the upper arc plate and the lower arc plate are long strip structures with an arc-shaped cross section. The arc-shaped openings of the upper arc plate and the lower arc plate are arranged opposite each other and are staggered. The upper arc plates and the lower arc plates are arranged in an array, and the distance between adjacent upper arc plates is smaller than the width of the lower arc plate.

2. An energy-saving kiln, characterized in that, Including the kiln waste heat utilization device as described in claim 1, the combustion section and cooling section of the kiln are located inside the inner insulation shell, the preheating section of the kiln is located above the inner insulation shell and inside the outer insulation shell, the feeding and discharging positions of the kiln are located at the same end of the outer insulation shell, the outer insulation shell is closed off away from the discharging position, and the kiln further includes: The lower roller and the upper roller are arranged in a linear array inside the outer insulation shell. The lower roller passes through the outer insulation shell and the inner insulation shell. The upper roller passes through the outer insulation shell and is located outside the inner insulation shell. A roller drive mechanism for driving the lower roller and the upper roller to rotate is provided outside the outer insulation shell. A burner, which is fixedly connected to the interior of the outer insulation shell, has a nozzle located thereon that passes through the side wall of the inner insulation shell and is disposed in the combustion section area within the inner insulation shell; Cooling pipes, wherein the cooling pipes are installed in the cooling section on the outer insulation shell, are used to cool the material located in the cooling section; The lifting mechanism includes a lifting bracket and a power mechanism. The power mechanism is located outside the outer insulation shell. The power mechanism drives the lifting bracket to move up and down inside the outer insulation shell, and the lifting bracket feeds the material on the upper roller onto the lower roller.

3. The energy-saving kiln according to claim 2, characterized in that, The burner's air inlet pipe is located between the outer insulation shell and the inner insulation shell, and the air inlet pipe is provided with multiple heating fins.

4. The energy-saving kiln according to claim 2, characterized in that, The lifting mechanism includes: A lifting support is provided, on which lifting rollers are rotatably connected. The lifting rollers are arranged in an array, and the distribution of the lifting rollers is the same as that of the lower rollers. A drive wheel is also rotatably connected to the inner wall of the outer insulation shell. The drive wheel is located on the upper and lower sides of the lifting support. When the lifting rollers are at the same level as the lower rollers or the upper rollers, the drive wheel is tangent to the lifting rollers and drives them to rotate. The drive wheel is driven to rotate by a roller drive mechanism installed externally. A lifting rod, one end of which is fixedly connected to the lifting bracket, the lifting rod passing through the outer insulation shell above the lifting bracket, and a lifting plate fixedly connected to the end of the lifting rod away from the lifting bracket; A power mechanism is fixedly connected to the outer insulation shell. The power mechanism is used to drive the lifting plate to rise and fall, thereby driving the lifting bracket to rise and fall.

5. The energy-saving kiln according to claim 4, characterized in that, The lifting mechanism includes: Telescopic module; A lifting support plate is connected to a lifting plate, and a telescopic module is connected to the outer insulation shell. The end of the telescopic module is connected to the lifting support plate, and the telescopic module is used to control the lifting and lowering of the lifting support plate.

6. The energy-saving kiln according to claim 5, characterized in that, The lifting support plate is fixedly connected to the output end of the power mechanism. The lifting support plate is arranged parallel to the lifting plate. A guide shaft is provided on the lifting support plate. The guide shaft passes through the lifting plate and is slidably connected to the lifting plate. The lifting mechanism further includes: A compression spring is located between the lifting support plate and the lifting plate. The compression spring is in a compressed state, and the lifting support plate supports the lifting plate.

7. The energy-saving kiln according to claim 6, characterized in that, The energy-saving kiln also includes: A heat dissipation mechanism is installed on the lifting support plate, and the heat dissipation mechanism drives airflow through the compression spring.

Images