A kind of autoclave equipment for aerated concrete board using waste heat

Abstract

The present invention discloses an autoclave device for aerated concrete panels using waste heat. The present invention connects a pretreatment chamber and an autoclave with a transport track, and a steam curing vehicle is arranged on the transport track, so that the steam curing vehicle can be moved from the pretreatment chamber to the autoclave through the transport track, and a heating device and a waste heat utilization device are arranged in the pretreatment chamber to recover the tail gas in the autoclave, and the aerated concrete panels are heated by the tail gas temperature and the heating device, so that the required autoclave time of the aerated concrete panels after preheating can be reduced. An exhaust pipe and a gas storage tank are arranged on the steam curing vehicle, and a one-way valve and an exhaust hole are respectively arranged on the gas storage tank, and the exhaust pipe is connected to the exhaust hole through a conduit. After the aerated concrete panels are autoclaved, the autoclave cover is opened, and the gas storage tank will spray the internal steam to the aerated concrete panels through the exhaust pipe, so as to prevent the water from volatilizing too quickly and causing the yield to be reduced. There is no need to slowly open the autoclave cover, and the autoclave is naturally cooled, so as to shorten the opening time.

Description

Technical Field

[0001] The invention relates to the technical field of building material production equipment, and in particular to autoclave equipment for waste heat utilization aerated concrete panels. Background Art

[0002] The autoclave is a large pressure vessel, which is mainly used for high temperature and high pressure steam curing of aerated blocks, pipe piles, lime sand bricks, fly ash bricks, microporous calcium silicate boards, high strength gypsum, new lightweight wall materials, etc., to improve the strength and performance of the products. When producing cement boards, the cement boards also need to be steam cured to ensure the uniformity of the volume change of the cement boards during the coagulation process and the strength of the concrete meets the standards. At present, the autoclave takes a long time to steam aerated concrete boards and the efficiency is relatively low, so there is a need for autoclave equipment that can improve the efficiency to solve the above problems. Summary of the invention

[0003] The present invention provides a waste heat utilization aerated concrete board autoclaving equipment, which can reduce the autoclaving time of the aerated concrete board and can open the cover after the aerated concrete board is autoclaved without waiting for natural cooling, thereby greatly improving work efficiency.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: an autoclave equipment for aerated concrete panels using waste heat, comprising a pretreatment chamber, an autoclave, a transport track and a steam-curing vehicle; a pressure relief valve is arranged on the autoclave, a waste heat utilization device and a heating device are arranged in the pretreatment chamber, the waste heat utilization device is connected to the pressure relief valve through a steam pipeline, an exhaust pipe and a gas storage tank are arranged on the steam-curing vehicle, a check valve and an exhaust hole are respectively arranged on the gas storage tank, the exhaust pipe is connected to the exhaust hole through a conduit, the autoclave is close to the pretreatment chamber, the transport track connects the pretreatment chamber and the autoclave, the steam-curing vehicle is arranged on the transport track, and the steam-curing vehicle can be moved from the pretreatment chamber to the autoclave via the transport track.

[0005] Furthermore, the steaming cart includes a supporting plate, load-bearing wheels, a storage drawer, a T-shaped handle, and a locking block. The supporting plate is arranged on the load-bearing wheels, guide rails are arranged downward on both sides of the supporting plate, slide rails are arranged on both sides of the storage drawer, the guide rails cooperate with the slide rails, the T-shaped handle is welded to the outside of the storage drawer, locking blocks are arranged on both sides of the T-shaped handle, the locking blocks are hinged to the supporting plate, and the gas tank is arranged in the storage drawer.

[0006] Furthermore, a card block is provided on the locking block, and handle slots are provided on both sides of the T-shaped handle. The card block can be inserted into the handle slot, and pin holes are correspondingly provided on the card block and the handle slot. A pull pin is provided in the pin hole of the handle slot, and the pull pin can move up and down between the card block and the handle slot along the pin hole.

[0007] Furthermore, the waste heat utilization device includes a condenser, a heat sink, a water hose and a water collecting tank. The heat sink is arranged on the condenser, and the two ends of the condenser are connected to the water hose and the steam pipeline respectively, and the water hose is connected to the water collecting tank.

[0008] Furthermore, a flow limiting mechanism for limiting the steam flow rate is also provided in the conduit.

[0009] Furthermore, the flow limiting mechanism includes an air outlet pipe, a connecting rod, a first baffle and a second baffle. The air outlet pipe is arranged in the duct. One end of the first baffle and the second baffle are hinged on the left and right at the top of the air outlet pipe and in the air outlet pipe respectively. The two ends of the connecting rod are hinged to the other ends of the first baffle and the second baffle respectively. A torsion spring for resetting is arranged at the hinge of the second baffle.

[0010] Furthermore, a limit block for limiting the flipping angle of the second baffle is provided on the inner wall of the air outlet pipe.

[0011] Furthermore, there are four exhaust pipes, which are respectively arranged at four corners of the steaming vehicle, and a conduit is arranged at the bottom of each of the four exhaust pipes, which is connected to the exhaust hole.

[0012] Furthermore, a plurality of nozzles are arranged on the side wall of the exhaust pipe from top to bottom.

[0013] Furthermore, it also includes a temperature control switch, which is arranged in the pretreatment chamber and connected to the heating device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a pressure relief valve on the autoclave, and provides a waste heat utilization device and a heating device in the pretreatment chamber. The waste heat utilization device is connected to the pressure relief valve through a steam pipeline, so that the waste heat utilization device can utilize and collect the heat of the autoclave steam, and the aerated concrete board is pretreated and heated by the heat recovered by the waste heat utilization device. The heating device can supplement the heat required in the pretreatment chamber when the waste heat utilization device does not collect enough steam heat. The aerated concrete board heated by the pretreatment does not need to wait for the temperature to rise slowly during autoclaving, which can reduce the required autoclaving time. An exhaust pipe and a gas storage tank are provided on the steam curing vehicle, and a one-way valve and an exhaust hole are respectively provided on the gas storage tank, and the exhaust pipe is connected to the exhaust hole through a conduit. After the autoclave is completed, the autoclave cover can be opened, and the gas storage tank will spray the internal steam to the aerated concrete board through the exhaust pipe, so as to prevent the water from volatilizing too quickly and causing the yield to decrease. There is no need to slowly open the autoclave cover, and wait for the autoclave to cool naturally, which shortens the opening time. The autoclave and the pretreatment room are placed close together, the transport track connects the pretreatment room and the autoclave, and the curing car is set on the transport track. The curing car can be moved from the pretreatment room to the autoclave through the transport track. Therefore, after the aerated concrete board is preheated, the aerated concrete board can be quickly delivered to the autoclave for autoclaving. In the whole process, the time required for autoclaving, the time for transporting the aerated concrete board, and the time waiting for the autoclave to cool down are reduced, which greatly improves the work efficiency, and at the same time, the tail gas of the autoclave can be utilized and collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the structure of the present invention;

[0016] Figure 2 It is a top view of the structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the steaming vehicle of the present invention;

[0018] Figure 4 It is a schematic diagram of the storage drawer and the supporting flat plate of the present invention;

[0019] Figure 5 for Figure 3 A magnified view of middle;

[0020] Figure 6 for Figure 3 Enlarged view of middle B;

[0021] Figure 7 This is a schematic diagram of the locking block structure of the present invention;

[0022] In the figure: 1. pretreatment chamber, 2. autoclave, 3. transport track, 4. steam curing car, 401. support plate, 402. load-bearing wheel, 403. storage drawer, 404. T-shaped handle, 405. guide rail, 406. slide rail, 407. locking block, 408. card block, 409. handle card slot, 410. pin hole, 411. pull pin, 5. exhaust pipe, 6. gas storage tank, 7. check valve, 8. exhaust hole , 9. pressure relief valve, 10. waste heat utilization device, 101. condenser, 102. heat sink, 103. water hose, 104. water collecting tank, 11. heating device, 12. conduit, 13. nozzle, 14. current limiting mechanism, 1401. air outlet pipe, 1402. connecting rod, 1403. first baffle, 1404. second baffle, 15. limit block, 16. steam outlet, 17. temperature control switch. DETAILED DESCRIPTION

[0023] Reference Figure 1-7A waste heat utilization aerated concrete board autoclave equipment, comprising a pretreatment chamber 1, an autoclave 2, a transport track 3 and a steam curing car 4; the transport track 3 connects the pretreatment chamber 1 and the autoclave 2, the steam curing car 4 is arranged on the transport track 3, the steam curing car 4 can be moved from the pretreatment chamber 1 to the autoclave 2 through the transport track 3, an exhaust pipe 5 and a gas storage tank 6 are arranged on the steam curing car 4, a check valve 7 and an exhaust hole 8 are respectively arranged on the gas storage tank 6, the exhaust pipe 5 is connected to the exhaust hole 8 through a conduit 12, a pressure relief valve 9 is arranged on the autoclave 2, a waste heat utilization device 10 is arranged in the pretreatment chamber 1, the waste heat utilization device 10 is connected to the pressure relief valve 9 through a steam pipeline, and a heating device 11 is also arranged in the pretreatment chamber 1. The present invention provides a pressure relief valve 9 on the autoclave 2, and a waste heat utilization device 10 and a heating device 11 in the pretreatment chamber 1. The waste heat utilization device 10 is connected to the pressure relief valve 9 through a steam pipeline, so that the waste heat utilization device 10 can utilize and collect the heat of the steam in the autoclave 2, and the aerated concrete board is pretreated and heated by the heat recovered by the waste heat utilization device 10. The heating device 11 can supplement the required heat in the pretreatment chamber 1 when the waste heat utilization device 10 does not collect enough steam heat. The aerated concrete board after pretreatment heating does not need to wait for the temperature to rise slowly during autoclaving, which can reduce the required autoclaving time. The exhaust pipe 5 and the gas storage tank 6 are provided on the steam curing vehicle 4, and the one-way valve 7 and the exhaust hole 8 are respectively provided on the gas storage tank 6. The exhaust pipe 5 is connected to the exhaust hole 8 through the conduit 12. After the aerated concrete board is autoclaved, the cover of the autoclave 2 can be opened, and the gas storage tank 6 will spray the internal steam to the aerated concrete board through the exhaust pipe 5 to prevent the water from volatilizing too quickly and causing the yield to decrease. There is no need to slowly open the cover of the autoclave 2, and wait for the autoclave 2 to cool naturally, which shortens the opening time. The autoclave 2 and the pretreatment chamber 1 are close, and the transportation track 3 connects the pretreatment chamber 1 and the autoclave 2. The steaming car 4 is set on the transportation track 3. The steaming car 4 can be moved from the pretreatment chamber 1 to the autoclave 2 through the transportation track 3. Therefore, after the aerated concrete board is preheated, the aerated concrete board can be quickly delivered to the autoclave 2 for autoclaving. In the whole process, the time required for autoclaving, the transportation time of the aerated concrete board and the waiting time for the autoclave 2 to cool down are reduced, which greatly improves the work efficiency. At the same time, the tail gas of the autoclave 2 can be utilized and collected.

[0024] The steaming cart 4 includes a support plate 401, a load-bearing wheel 402, a storage drawer 403, a T-shaped handle 404, and a locking block 407. The support plate 401 is arranged on the load-bearing wheel 402, guide rails 405 are arranged downward on both sides of the support plate 401, and slide rails 406 are arranged on both sides of the storage drawer 403. The guide rails 405 cooperate with the slide rails 406. The T-shaped handle 404 is welded to the outside of the storage drawer 403, and locking blocks 407 are arranged on both sides of the T-shaped handle 404. The locking blocks 407 are hinged to the support plate 401, and the gas tank 6 is arranged in the storage drawer 403. In order to better store and place the gas tank 6 and to facilitate replacement or maintenance in the later stage, the gas tank 6 is arranged in the storage drawer 403. By opening the locking block 407, the storage drawer 403 can be pulled out using the T-shaped handle 404 to replace or maintain the gas tank 6. The locking block 407 locks the storage drawer 403 , and now the slide rails 406 of the storage drawer 403 slide on the guide rails 405 arranged downward on both sides of the support plate 401 .

[0025] Among them, a card block 408 is provided on the locking block 407, and handle card slots 409 are provided on both sides of the T-shaped handle 404. The card block 408 can be inserted into the handle card slot 409, and pin holes 410 are correspondingly provided on the card block 408 and the handle card slot 409. A pull pin 11 is provided in the pin hole 410 of the handle card slot 409, and the pull pin 11 can move up and down in the card block 408 and the handle card slot 409 along the pin hole 410. In order to better fix the storage drawer 403 and prevent it from slipping out. The card block 408 can be inserted into the handle card slot 409 by rotating the locking block 407. When the locking block 407 is inserted into the handle card slot 409, the pull pin 11 is inserted into the pin holes 410 correspondingly provided on the card block 408 and the handle card slot 409 to complete the fixing operation.

[0026] The waste heat utilization device 10 includes a condenser 101, a heat sink 102, a water hose 103 and a water collection tank 104. The heat sink 102 is arranged on the condenser 101. Both ends of the condenser 101 are connected to the water hose 103 and the steam pipeline. The water hose 103 is connected to the water collection tank 104. Steam condenses through the condenser 101, and the heat is absorbed by the heat sink 102 and dissipated into the pretreatment chamber 1. The condensed water can be transported to the water collection tank 104 through the water hose 103 for recycling, which is more environmentally friendly.

[0027] Among them, a flow limiting mechanism 14 for limiting the steam flow rate is also arranged in the conduit 12. After the autoclave 2 is depressurized and the cover is opened, the steam in the gas storage tank 6 will be discharged as the pressure decreases. If the steam flow rate is limited by the size of the opening, the opening will be too large and the steam will be lost quickly, and the opening will be too small and the steam will flow out too slowly, and the surface of the aerated concrete board cannot be humidified uniformly. Therefore, the steam flow rate is automatically controlled by the flow limiting mechanism 14, so that the steam can flow uniformly, while extending the steam outflow time in the gas storage tank 6 as much as possible, and ensuring a better humidification effect.

[0028] The flow limiting mechanism 14 includes an air outlet pipe 1401, a connecting rod 1402, a first baffle 1403 and a second baffle 1404. The air outlet pipe 1401 is arranged in the duct 12. One end of the first baffle 1403 and the second baffle 1404 are respectively hinged at the top of the air outlet pipe 1401 and in the air outlet pipe 1401. The two ends of the connecting rod 1402 are respectively hinged to the other ends of the first baffle 1403 and the second baffle 1404. A torsion spring for resetting is arranged at the hinge of the second baffle 1404. In normal state, the first baffle 1403 covers the top of the air duct and the second baffle 1404 is vertically downward. When steam flows out, the steam impacts the first baffle 1403 to make the first baffle 1403 flip upward and open. While the first baffle 1403 rotates, the second baffle 1404 is driven to flip upward through the connecting rod 1402 to limit the steam outlet 16. The greater the steam flow rate, the smaller the opening of the second baffle 1404. When the steam flow rate slows down, the second baffle 1404 is driven by the torsion spring to flip downward, the steam outlet 16 increases, and the first baffle 1403 is driven by the connecting rod 1402 to flip downward, while the steam still impacts the first baffle 1403, and the second baffle 1404 cannot be reset by the torsion spring. When the steam is basically lost, the steam cannot impact the first baffle 1403, the second baffle 1404 is driven by the torsion spring to flip downward and reset, and the first baffle 1403 is driven by the connecting rod 1402 to flip downward and cover the top of the air duct.

[0029] Among them, a stopper 15 is provided on the inner wall of the air outlet pipe 1401 to limit the turning angle of the second baffle 1404. When the steam impacts the first baffle 1403 to turn the first baffle 1403 upward and open, while the first baffle 1403 rotates, the second baffle 1404 is driven to turn upward through the connecting rod 1402 to limit the outlet of gas outflow, and at this time, the steam impacts the second baffle 1404. If the air outlet pipe 1401 is a straight tube shape, it is very likely that the second baffle 1404 will continue to turn upward more than a degree, which will make the steam outlet larger. If the air outlet pipe 1401 is a shape similar to a small top and a large bottom, this problem can be avoided, but the second baffle 1404 may still block the steam outlet after turning. In order to prevent these two situations from happening, the stopper 15 is used to limit the turning angle of the second baffle 1404, so that when the second baffle 1404 turns to the top, a part of the steam outlet 16 is still reserved.

[0030] There are four exhaust pipes 5 , which are respectively arranged at four corners of the steaming vehicle 4 . A conduit 12 is arranged at the bottom of each of the four exhaust pipes 5 , and the conduit 12 is connected to the exhaust hole 8 .

[0031] Among them, a plurality of nozzles 13 are arranged from top to bottom on the side wall of the exhaust pipe 5. Through the nozzles 13, steam can be evenly sprayed onto the aerated concrete board.

[0032] The pretreatment chamber 1 further includes a temperature control switch 17, which is disposed in the pretreatment chamber 1 and connected to the heating device 11. In order to better control the heating device 11 and reduce the burden on workers, the heating device 11 can be controlled by the temperature control switch 17.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste heat utilization aerated concrete board autoclave equipment, comprising a pretreatment chamber, an autoclave, a transport track and an autoclave vehicle; its characteristics are: The autoclave is provided with a pressure relief valve, the pretreatment chamber is provided with a waste heat utilization device and a heating device, the waste heat utilization device is connected to the pressure relief valve through a steam pipeline, an exhaust pipe and a gas storage tank are provided on the steam curing car, a one-way valve and an exhaust hole are respectively provided on the gas storage tank, the exhaust pipe is connected to the exhaust hole through a conduit, the autoclave and the pretreatment chamber are close, the transport track connects the pretreatment chamber and the autoclave, the steam curing car is provided on the transport track, and the steam curing car can be moved from the pretreatment chamber to the autoclave through the transport track; a current limiting mechanism for limiting the steam flow rate is also provided in the conduit; the current limiting mechanism includes an air outlet pipe, a connecting rod, a first baffle and a second baffle, the air outlet pipe is provided in the conduit, one end of the first baffle and the second baffle are respectively hinged to the top end of the air outlet pipe and the inside of the air outlet pipe, the two ends of the connecting rod are respectively hinged to the other ends of the first baffle and the second baffle, and a torsion spring for resetting is provided at the hinge of the second baffle; a limit block for limiting the flip angle of the second baffle is provided on the inner wall of the air outlet pipe.

2. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 1 is characterized in that: The steaming and curing cart includes a supporting plate, load-bearing wheels, a storage drawer, a T-shaped handle, and a locking block. The supporting plate is arranged on the load-bearing wheels, guide rails are arranged downward on both sides of the supporting plate, slide rails are arranged on both sides of the storage drawer, the guide rails cooperate with the slide rails, the T-shaped handle is welded to the outside of the storage drawer, locking blocks are arranged on both sides of the T-shaped handle, the locking blocks are hinged to the supporting plate, and the gas tank is arranged in the storage drawer.

3. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 2 is characterized by: A card block is provided on the locking block, and handle card slots are provided on both sides of the T-shaped handle. The card block can be inserted into the handle card slot. Pin holes are correspondingly provided on the card block and the handle card slot. A pull pin is provided in the pin hole of the handle card slot. The pull pin can move up and down between the card block and the handle card slot along the pin hole.

4. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 1 is characterized by: The waste heat utilization device includes a condenser, a heat sink, a water hose and a water collecting tank. The heat sink is arranged on the condenser. Both ends of the condenser are connected to the water hose and the steam pipeline respectively. The water hose is connected to the water collecting tank.

5. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 1 is characterized by: There are four exhaust pipes, which are respectively arranged at four corners of the steaming vehicle. Conduits are arranged at the bottom of the four exhaust pipes, and the conduits are connected to the exhaust holes.

6. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 1 is characterized by: A plurality of nozzles are arranged on the side wall of the exhaust pipe from top to bottom.

7. The autoclave equipment for aerated concrete panels utilizing waste heat according to claim 1 is characterized by: It also includes a temperature control switch, which is arranged in the pretreatment chamber and connected to the heating device.

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