Autoclaved curing kettle with heat recovery function

Abstract

The autoclaved curing kettle with the heat recovery function comprises a kettle body, a steam generator, a water inlet pipe, a heat recovery mechanism and an air outlet mechanism, the air outlet mechanism comprises a first corrugated pipe, a moving pipe and an electric sliding table, and the heat recovery mechanism comprises a recovery box, a partition plate, a snakelike heat exchange pipe, a water pumping pipe and a control valve. The movable pipe can be driven by the electric sliding table to move to the positions below the different S-shaped heat exchange pipes, waste gas can exchange heat with water in the cavity in the S-shaped heat exchange pipes to heat the water, and then the heated water can be conveyed into the steam generator through the water pumping pipe and the water inlet pipe to be used for steam production of the steam generator. The waste heat in the waste gas is prevented from being wasted, the waste gas can enter the other cavity to heat the water when the heated water in one cavity is pumped away through the arrangement of the multiple cavities, it is guaranteed that heat recovery is conducted continuously, the energy utilization rate is increased, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete product processing technical field, especially a kind of autoclave with heat recovery function. BACKGROUND

[0002] Aerated concrete block is a kind of new building material with light weight, good heat insulation, fire resistance, nailing, sawing, planing and certain anti-seismic ability. With the increasing environmental awareness of people, the use of aerated concrete block has also been rapidly developed. In the production process of aerated concrete block, autoclave is needed to put pretreated materials into it, then heat it through heating system and increase the pressure in the autoclave. In the high-temperature and high-pressure environment, the materials will react to form aerated concrete block. However, the autoclave will produce waste gas during work, which contains a lot of waste heat. If the waste gas is directly discharged into the atmosphere, it will cause waste of heat energy. Therefore, most autoclaves are equipped with heat recovery function. The heat energy in the waste gas is recovered and reused, avoiding waste of heat energy. However, the current autoclave cannot recover the heat in the waste gas and continue to work at the same time, which will interrupt the work of the autoclave and affect the production of aerated concrete block. SUMMARY

[0003] Therefore, the utility model provides an autoclave with heat recovery function, which can continuously recover the heat in the waste gas produced by the autoclave, avoiding waste of energy.

[0004] The technical solution of the utility model is as follows:

[0005] An autoclave with heat recovery function, comprising a kettle body, a steam generator, a water inlet pipe, a heat recovery mechanism and an air outlet mechanism. The air outlet mechanism comprises a first corrugated pipe, a moving pipe and an electric sliding table. The steam generator and the electric sliding table are arranged on the top surface of the kettle body. The top end of the first corrugated pipe is connected to the top surface of the kettle body, and the top end is connected to the moving pipe. The driving end of the electric sliding table is connected to the side wall of the moving pipe. The heat recovery mechanism comprises a recovery tank, a partition, a serpentine heat exchange pipe, a water suction pipe and a control valve. The recovery tank is located above the kettle body. The partition divides the inside of the recovery tank into at least two cavities. The serpentine heat exchange pipe is arranged in the cavity, and its two ends extend to the bottom surface and the top surface of the recovery tank. The bottom end of the serpentine heat exchange pipe is located above the moving path of the moving pipe. The water suction pipe is located in the cavity, and its top end extends above the recovery tank. The control valve is arranged on the water suction pipe. The water inlet pipe is connected to the top end of the water suction pipe and the steam generator.

[0006] Preferably, the heat recovery mechanism further comprises a bracket, the bracket is arranged on the kettle body, and the recovery box is arranged on the bracket.

[0007] Preferably, the water inlet pipe comprises a conveying pipe, a water pump, a three-way valve, a first connecting pipe and a second connecting pipe, one end of the conveying pipe is connected with the steam generator, the other end is connected with the outlet of the three-way valve, the water pump is arranged on the conveying pipe, the first connecting pipe and the second connecting pipe are respectively connected with two inlets of the three-way valve, and the top end of the water pumping pipe is connected with the end of the second connecting pipe away from the three-way valve.

[0008] Preferably, the heat recovery mechanism further comprises a second bellow, a lifting pipe, a metal plate, an electromagnet and a reset spring, the bottom end of the serpentine heat exchange pipe, the second bellow and the lifting pipe are sequentially connected from top to bottom, the metal plate is arranged on the side wall of the lifting pipe, the reset spring is connected with the bottom surface of the recovery box, the electromagnet is arranged on the bottom surface of the recovery box and located above the metal plate, and the inner diameter of the lifting pipe is greater than the outer diameter of the moving pipe.

[0009] Preferably, the heat recovery mechanism further comprises a sleeve and a telescopic rod, the sleeve is arranged on the bottom surface of the recovery box, the reset spring is arranged in the sleeve, the top end of the telescopic rod is connected with the reset spring by extending into the sleeve, and the bottom end of the telescopic rod is connected with the top surface of the lifting plate.

[0010] Preferably, the side wall of the recovery box is provided with a water supplement pipe, and the water supplement pipe is communicated with the cavity.

[0011] Compared with the prior art, the heat recovery mechanism has the following beneficial effects:

[0012] ①The waste gas generated in the kettle body can enter the serpentine heat exchange pipe, the cavity of the recovery box stores water with a lower temperature, the serpentine heat exchange pipe can transfer the heat in the waste gas to the water, the water is heated and then is transported to the steam generator through the water pumping pipe and the water inlet pipe to generate steam, and the waste of energy is avoided.

[0013] ②The partition plate divides the recovery box into at least two cavities, the moving pipe is driven to move under the stretching and contraction of the first bellow through the electric sliding table, the moving pipe is connected with different serpentine heat exchange pipes, and when the hot water in one cavity is pumped away, the waste gas can heat the water in another cavity, so that the heat in the waste gas can be continuously recovered and utilized. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only preferred embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 The structure schematic view of the autoclaved curing kettle with heat recovery function of the utility model;

[0016] Fig. 2 The connecting structure schematic view of the heat recovery mechanism of the autoclaved curing kettle with heat recovery function of the utility model;

[0017] Fig. 3 The connecting structure schematic view of the sleeve and telescopic rod of the autoclaved curing kettle with heat recovery function of the utility model;

[0018] In the figure, 1, kettle body;2, steam generator;3, first bellow;4, moving pipe;5, electric sliding table;6, recovery box;7, partition;8, serpentine heat exchange pipe;9, water suction pipe;10, control valve;11, cavity;12, support;13, conveying pipe;14, water pump;15, three-way valve;16, first connecting pipe;17, second connecting pipe;18, second bellow;19, lifting pipe;20, metal plate;21, electromagnet;22, reset spring;23, sleeve;24, telescopic rod;25, water replenishing pipe. DETAILED DESCRIPTION

[0019] In order to better understand the technical content of the utility model, a specific embodiment is provided below, and the utility model is further explained in combination with the drawings.

[0020] Referring to Figs. 1 to 3 The autoclaved curing kettle with heat recovery function provided by the utility model comprises a kettle body 1, a steam generator 2, a water inlet pipe, a heat recovery mechanism and a gas outlet mechanism, the gas outlet mechanism comprises a first bellow 3, a moving pipe 4 and an electric sliding table 5, the steam generator 2 and the electric sliding table 5 are arranged on the top surface of the kettle body 1, the top end of the first bellow 3 is connected with the top surface of the kettle body 1, the top end is connected with the moving pipe 4, and the driving end of the electric sliding table 5 is connected with the side wall of the moving pipe 4;The heat recovery mechanism comprises a recovery box 6, a partition 7, a serpentine heat exchange pipe 8, a water suction pipe 9 and a control valve 10, the recovery box 6 is located above the kettle body 1, the partition 7 divides the inside of the recovery box 6 into at least two cavities 11, the serpentine heat exchange pipe 8 is arranged in the cavity 11, and the two ends of the serpentine heat exchange pipe 8 extend to the bottom surface and the top surface of the recovery box 6, the bottom end of the serpentine heat exchange pipe 8 is located above the moving path of the moving pipe 4, the water suction pipe 9 is located in the cavity 11, the top end of the water suction pipe 9 extends to above the recovery box 6, the control valve 10 is arranged on the water suction pipe 9, and the water inlet pipe is connected with the top end of the water suction pipe 9 and the steam generator 2.

[0021] The steam generator 2 and the recovery tank 6 are arranged on the top of the kettle body 1, the recovery tank 6 is divided into two cavities 11 by the partition 7, and the serpentine heat exchange pipe 8 is arranged in each cavity 11, the bottom end of the serpentine heat exchange pipe 8 extends to the lower side of the recovery tank 6, when the aerated concrete block is produced in the kettle body 1, the waste gas is generated in the kettle body 1, the waste gas can be transported into the serpentine heat exchange pipe 8 through the first corrugated pipe 3 and the moving pipe 4, and the water is stored in the cavity 11, the serpentine heat exchange pipe 8 can transmit the heat of the waste gas to the water to preheat the water, when the temperature of the water reaches a certain temperature, the control valve 10 is opened, the water pump 9 transports the heated water to the steam generator 2 through the water inlet pipe, the steam generator 2 processes the preheated water to obtain steam, and the steam is transported into the kettle body 1 to be used for the production of the aerated concrete block, so that the waste gas containing the residual heat is directly discharged into the atmosphere to avoid the waste of energy.

[0022] The recovery tank 6 is divided into two cavities 11, when the heat is recovered, only the water in one cavity 11 is heated, that is, the moving pipe 4 is connected with only one serpentine heat exchange pipe 8, when the water in the cavity 11 is pumped out through the water pump 9, the electric sliding table 5 drives the moving pipe 4 to move under the stretching and contraction of the first corrugated pipe 3, so that the moving pipe 4 can be connected with another serpentine heat exchange pipe 8, so that the waste gas can enter the cavity 11 in which the water is not heated, so that the heat in the waste gas can continuously heat the water, and the waste of heat is avoided.

[0023] Preferably, the heat recovery mechanism further comprises a support 12, the support 12 is arranged on the kettle body 1, and the recovery tank 6 is arranged on the support 12.

[0024] The support 12 is arranged to support the recovery tank 6, so that the recovery tank 6 and the top surface of the kettle body 1 form a cavity, and the movement of the moving pipe 4 is facilitated.

[0025] Preferably, the water inlet pipe comprises a conveying pipe 13, a water pump 14, a three-way valve 15, a first connecting pipe 16 and a second connecting pipe 17, one end of the conveying pipe 13 is connected with the steam generator 2, the other end is connected with the outlet of the three-way valve 15, the water pump 14 is arranged on the conveying pipe 13, the first connecting pipe 16 and the second connecting pipe 17 are respectively connected with two inlets of the three-way valve 15, and the top end of the water pump 9 is connected with the end of the second connecting pipe 17 away from the three-way valve 15.

[0026] The source of water used by the steam generator 2 is divided into two parts, the first part is normal water, and the second part is preheated water in the recovery tank 6, when the three-way valve 15 connects the delivery pipe 13 and the first connecting pipe 16, the external normal water can be delivered into the steam generator 2, and when the three-way valve 15 connects the delivery pipe 13 and the second connecting pipe 17, the heated water in the cavity 11 can be pumped into the second connecting pipe 17 through the water pump 9 and finally delivered into the steam generator 2.

[0027] Preferably, the heat recovery mechanism further comprises a second bellow 18, a lifting pipe 19, a metal plate 20, an electromagnet 21 and a reset spring 22, the bottom end of the serpentine heat exchange pipe 8, the second bellow 18 and the lifting pipe 19 are connected in sequence from top to bottom, the metal plate 20 is arranged on the side wall of the lifting pipe 19, the reset spring 22 is connected with the bottom surface of the recovery tank 6 and the metal plate 20, the electromagnet 21 is arranged on the bottom surface of the recovery tank 6 and above the metal plate 20, and the inner diameter of the lifting pipe 19 is greater than the outer diameter of the moving pipe 4.

[0028] When the moving pipe 4 moves below the lifting pipe 19, the current flowing into the electromagnet 21 can be controlled to decrease slowly, after the magnetic force of the electromagnet 21 on the metal plate 20 decreases slowly, the reset spring 22 can push the metal plate 20 to descend, so that the lifting pipe 19 descends and is connected with the moving pipe 4, and finally the moving pipe 4 is located in the lifting pipe 19, and the waste gas generated by the kettle body 1 can be delivered into the serpentine heat exchange pipe 8 through the lifting pipe 19 and the second bellow 18.

[0029] Preferably, the heat recovery mechanism further comprises a sleeve 23 and an extension rod 24, the sleeve 23 is arranged on the bottom surface of the recovery tank 6, the reset spring 22 is arranged in the sleeve 23, and the top end of the extension rod 24 is connected with the reset spring 22 and the bottom end of the extension rod 24 is connected with the top surface of the lifting plate.

[0030] In order to ensure that the lifting pipe 19 does not deviate when moving, the reset spring 22 is arranged in the sleeve 23, and when the metal plate 20 is subjected to an external force, the extension rod 24 can move along the sleeve 23.

[0031] Preferably, the side wall of the recovery tank 6 is provided with a water supplement pipe 25, and the water supplement pipe 25 is communicated with the cavity 11.

[0032] After the heated water in the cavity 11 is pumped out through the water pump 9, the cavity 11 can be supplemented with water through the water supplement pipe 25, so as to facilitate the next preheating process.

[0033] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An autoclave with heat recovery function, characterized in that, The system includes a vessel body, a steam generator, a water inlet pipe, a heat recovery mechanism, and a gas outlet mechanism. The gas outlet mechanism includes a first corrugated pipe, a moving pipe, and an electric slide. The steam generator and the electric slide are located on the top surface of the vessel body. The top end of the first corrugated pipe is connected to the top surface of the vessel body, and its top end is connected to the moving pipe. The drive end of the electric slide is connected to the side wall of the moving pipe. The heat recovery mechanism includes a recovery tank, a partition, a serpentine heat exchanger, a water pumping pipe, and a control valve. The recovery tank is located above the vessel body. The partition divides the recovery tank into at least two chambers. The serpentine heat exchanger is located in the chamber, with its two ends extending to the bottom and top surfaces of the recovery tank. The bottom end of the serpentine heat exchanger is located above the moving path of the moving pipe. The water pumping pipe is located in the chamber, with its top end extending above the recovery tank. The control valve is located on the water pumping pipe. The water inlet pipe connects the top end of the water pumping pipe to the steam generator.

2. The autoclave with heat recovery function according to claim 1, characterized in that, The heat recovery mechanism also includes a support frame, which is mounted on the vessel body, and the recovery box is mounted on the support frame.

3. The autoclave with heat recovery function according to claim 1, characterized in that, The water inlet pipe includes a delivery pipe, a water pump, a three-way valve, a first connecting pipe, and a second connecting pipe. One end of the delivery pipe is connected to a steam generator, and the other end is connected to the outlet of the three-way valve. The water pump is installed on the delivery pipe. The first connecting pipe and the second connecting pipe are respectively connected to the two inlets of the three-way valve. The top end of the pumping pipe is connected to the end of the second connecting pipe away from the three-way valve.

4. The autoclave with heat recovery function according to claim 1, characterized in that, The heat recovery mechanism also includes a second corrugated pipe, a rising pipe, a metal plate, an electromagnet, and a return spring. The bottom end of the serpentine heat exchange tube, the second corrugated pipe, and the rising pipe are connected sequentially from top to bottom. The metal plate is disposed on the side wall of the rising pipe. The return spring is connected to the metal plate and the bottom surface of the recovery box. The electromagnet is disposed on the bottom surface of the recovery box and located above the metal plate. The inner diameter of the rising pipe is larger than the outer diameter of the moving pipe.

5. The autoclave with heat recovery function according to claim 4, characterized in that, The heat recovery mechanism also includes a sleeve and a telescopic rod. The sleeve is disposed on the bottom surface of the recovery box, the return spring is disposed in the sleeve, the top end of the telescopic rod extends into the sleeve and is connected to the return spring, and its bottom end is connected to the top surface of the lifting plate.

6. The autoclave with heat recovery function according to claim 1, characterized in that, The recycling bin is equipped with a water supply pipe on its side wall, and the water supply pipe is connected to the cavity.

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