CN214605119U - Pour ground paste temperature control system - Google Patents

Abstract

The application relates to the technical field of equipment for green production of aerated bricks, in particular to a pouring slurry temperature control system which comprises a pouring stirrer and an autoclave, wherein a heat exchange device is connected between the pouring stirrer and the autoclave; the pouring mixer comprises a heat conduction barrel and a mixing barrel, the heat conduction barrel is connected outside the mixing barrel, a heat conduction cavity is arranged between the heat conduction barrel and the mixing barrel, heat conduction liquid is filled in the heat conduction cavity, and a temperature sensor is arranged in the heat conduction cavity; the still kettle is provided with a pressure release valve; the heat exchange device comprises a heat exchange water flow plate and an exhaust assembly used for supplying heat to the heat exchange water flow plate, the heat exchange water flow plate is communicated with the heat conduction barrel, and the exhaust assembly is connected with the pressure release valve. The method has the effects of recycling waste heat of the still kettle and controlling the initial temperature of the pouring slurry.

Description

Pour ground paste temperature control system

Technical Field

The application relates to the technical field of equipment for green production of aerated bricks, in particular to a pouring slurry temperature control system.

Background

The aerated brick is an aerated concrete block produced by a high-temperature autoclaved equipment process, has the advantages of light weight, good heat insulation performance, good processing performance and the like, is widely applied to the construction of various buildings at present, and is a novel building material widely popularized in China.

The manufacturing process of the aerated brick is roughly divided into mixing, pouring, standing, cutting and steam curing. The steam curing is to heat the concrete with certain strength after initial setting through high-temperature steam, so that the concrete has a violent hydration reaction at high temperature to improve the strength. However, when the autoclave is opened after the steam curing is completed, a large amount of high-temperature steam in the autoclave escapes from the autoclave, and waste heat is wasted.

At present, a better solution is to collect the waste heat and then use the waste heat to preheat the boiler feed water, for example, a waste heat utilization system of the still kettle disclosed in the chinese utility model publication No. CN209131467U, the utility model discloses a device for utilizing the waste heat of the still kettle, which can be used for preheating the boiler feed water, thereby realizing the effect of utilizing the waste heat of the still kettle.

In the production process of the aerated brick, the inventor finds that when pouring and stirring are carried out, if the slurry has a certain initial temperature, the initial setting speed of the slurry can be increased, and therefore the production efficiency of the aerated brick is improved. However, if the initial temperature is too high, the slurry is easy to be molded too quickly, so that bubbles in the slurry are difficult to diffuse when the slurry is in a still state, and the density and the strength of the molded aerated brick are increased and reduced; while too low an initial temperature will result in a slower initial setting rate and thus longer rest time.

In view of the above related technologies, the inventor believes that the waste heat in the autoclave is at a low temperature, and the casting slurry can be heated by the waste heat in the autoclave, so that the casting slurry has a proper initial temperature, however, no related equipment can achieve the function at present.

SUMMERY OF THE UTILITY MODEL

In order to realize recycling of waste heat of the still kettle and control of the initial temperature of the pouring slurry, the application provides a pouring slurry temperature control system.

The application provides a pour ground paste temperature control system adopts following technical scheme:

a pouring slurry temperature control system comprises a pouring stirrer and an autoclave, wherein a heat exchange device is connected between the pouring stirrer and the autoclave; the pouring mixer comprises a heat conduction barrel and a mixing barrel, the heat conduction barrel is connected to the outside of the mixing barrel, a heat conduction cavity is arranged between the heat conduction barrel and the mixing barrel, heat conduction liquid is filled in the heat conduction cavity, and a temperature sensor is arranged in the heat conduction cavity; the still kettle is provided with a pressure release valve; the heat exchange device comprises a heat exchange water flow plate and an exhaust assembly used for supplying heat to the heat exchange water flow plate, the heat exchange water flow plate is communicated with the heat conduction barrel, and the exhaust assembly is connected with the pressure release valve.

By adopting the technical scheme, when the pressure release valve is opened, high-temperature steam in the still kettle enters the exhaust assembly through the pressure release valve under the action of pressure difference, and the exhaust assembly heats the heat exchange water flow plate. Because heat transfer rivers board and heat conduction bucket intercommunication have heat conduction liquid to circulate between heat transfer rivers board and the heat conduction bucket, consequently the exhaust subassembly heats heat conduction liquid through heating heat transfer rivers board, and heat conduction liquid after the intensification heats the ground paste in the agitator to the realization is to the utilization of evaporating the cauldron used heat. The special point is that the heat conduction liquid is measured by temperature sensor to the temperature of heat conduction liquid is controlled to the producer, closes the relief valve promptly when the temperature is too high and in order to stop high temperature steam to the heating of heat conduction liquid, opens the relief valve promptly when the temperature is too low and utilizes high temperature steam heating heat conduction liquid, thereby realizes pouring the control of ground paste initial temperature.

Optionally, the number of the still kettles is multiple, the exhaust assembly comprises a plurality of first exhaust pipes, a gas collecting pipe and a second exhaust pipe, the number of the first exhaust pipes is the same as that of the still kettles, the first exhaust pipes correspond to the first exhaust pipes in a one-to-one manner, one end of each first exhaust pipe is communicated with one corresponding pressure release valve of the still kettle, the other end of each first exhaust pipe is communicated with the gas collecting pipe, one end of each second exhaust pipe is communicated with the gas collecting pipe, and the other end of each second exhaust pipe faces the heat exchange water flow plate.

Through adopting above-mentioned technical scheme, high-temperature steam in a plurality of autoclaves gathers in the gas collecting pipe after the collection of first blast pipe, then spouts to heat transfer rivers board through the second blast pipe, and high-temperature steam takes place the condensation and releases a large amount of heats on heat transfer rivers board surface to the realization is to the heating of heat transfer rivers board. In addition, the total heat transmitted can be regulated and controlled by controlling the number of the pressure relief valves in the plurality of autoclaves, the heat transfer formula can be easily known, and when the total heat is reduced and the heat transfer coefficient and the heat transfer rate are unchanged, the temperature change rate is reduced, so that the temperature rise rate of the heat exchange water flow plates can be regulated by controlling the number of the pressure relief valves. To sum up, adopt above-mentioned technical scheme, can not only reuse the used heat that a plurality of stills produced, can also regulate and control the rate of rise of temperature of heat transfer rivers board simultaneously to the realization is to pouring the control of ground paste temperature.

Optionally, the exhaust assembly further comprises a heat preservation pipe, and the first exhaust pipe and/or the second exhaust pipe are/is arranged in the heat preservation pipe.

Through adopting above-mentioned technical scheme, set up the insulating tube and can keep warm to first blast pipe and second blast pipe to reduce the condensation process of high temperature steam in first blast pipe and second blast pipe, improve the utilization ratio of used heat.

Optionally, the second exhaust pipe is communicated with a condensate pipe for discharging condensate water condensed in the second exhaust pipe.

If the high-temperature steam is condensed in the second exhaust pipe, the second exhaust pipe is easy to generate the phenomenon of condensed water accumulation, so that the second exhaust pipe is blocked, the air pressure is increased, the pressure difference between the first exhaust pipe and the second exhaust pipe is reduced, and finally the high-temperature steam cannot be normally decompressed. And through adopting above-mentioned technical scheme, set up the condensate pipe and can discharge the comdenstion water in the second blast pipe to effectively reduce the risk that second blast pipe atmospheric pressure rises.

Optionally, the heat exchange tube is communicated between the heat exchange water flow plate and the heat conduction barrel and comprises an outflow section, the outflow section is communicated with the heat conduction barrel, the outflow section is communicated with a water pump, the input end of the water pump is communicated with the heat exchange water flow plate, and the output end of the water pump is communicated with the outflow section.

Through adopting above-mentioned technical scheme, can further through the flow of heat conduction liquid in the water pump control heat exchange tube, when the temperature of heat transfer rivers board was higher promptly, the producer stopped the work of water pump for heat conduction liquid can't be just produced and flows to the heat conduction bucket in, thereby the realization stops the process to pouring the ground paste heating, and then realizes the control to pouring the ground paste temperature.

Optionally, the heat exchange tube further comprises an inflow section and a water valve for opening and closing the inflow section.

By adopting the technical scheme, the water valve is arranged to control the flow of the heat-conducting liquid, so that a producer can regulate and control the heat convection between the heat-conducting liquid and the pouring slurry according to the temperature of the pouring slurry, and the temperature of the pouring slurry is controlled.

Optionally, the heat exchanger includes a housing, the heat exchange water flow plate is fixedly connected to the inside of the housing, the second exhaust pipe penetrates through and is supported on the side wall of the housing, and the housing bottom of the housing is communicated with a drain pipe.

By adopting the technical scheme, condensed water dropping after the condensation on the surface of the heat exchange water flow plate can be discharged out of the shell through the drain pipe at the bottom of the shell, thereby avoiding the accumulation of the condensed water in the shell. Furthermore, the condensed water may have various uses, for example, the condensed water may be used to cool down a superheated heat exchange water flow plate.

Optionally, the shell bottom of the casing is in arc transition arrangement.

Through adopting above-mentioned technical scheme, the casing that is the circular arc transition setting can be convenient for the comdenstion water from the drain pipe discharge casing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. high-temperature steam in the still kettle is conveyed to the heat exchange water flow plate through the pressure release valve, and the heat exchange water flow plate is used for heating pouring slurry in the pouring stirrer, so that waste heat utilization is realized, and the pressure release valve can be used for effectively controlling the temperature of the pouring slurry;

2. high-temperature steam of the multiple steam kettles is collected by the gas collecting pipe and then is uniformly conveyed to the heat exchange water flow plate to heat the heat exchange water flow plate, so that waste heat generated by the multiple steam kettles can be reused, and the heating rate of the heat exchange water flow plate can be regulated and controlled, so that the temperature of the pouring slurry can be controlled;

3. the setting of condensate pipe can be discharged the condensate water in the second blast pipe to effectively reduce the risk that second blast pipe atmospheric pressure rises.

Drawings

Fig. 1 is a schematic structural diagram of a casting slurry temperature control system according to an embodiment of the present disclosure.

FIG. 2 is a partial cross-sectional view of a cast mixer in an embodiment of the present application.

FIG. 3 is a cross-sectional view of a cast mixer in an embodiment of the present application.

FIG. 4 is a partial cross-sectional view of a heat exchange device in an embodiment of the present application.

FIG. 5 is a schematic view of a connection structure of the second exhaust pipe, the heat-insulating pipe and the casing in the embodiment of the present application.

Description of reference numerals: 1. pouring a stirrer; 11. supporting legs; 12. a mixer body; 121. a heat conducting barrel; 122. a stirring barrel; 123. a heat conducting cavity; 13. a stirring paddle; 14. a drive motor; 15. a slurry feeding pipe; 16. a cement lime powder feeding pipe; 17. an aluminum powder feeding pipe; 2. a heat exchange device; 21. a housing; 211. a drain pipe; 22. a heat exchange assembly; 221. a heat exchange water flow plate; 222. a heat exchange pipe; 2221. an outflow section; 2222. an inflow section; 223. a water pump; 224. a water valve; 23. an exhaust assembly; 231. a first exhaust pipe; 232. a gas collecting pipe; 233. a second exhaust pipe; 234. a heat preservation pipe; 235. a condensate pipe; 236. a support link; 3. a still kettle; 31. and (4) releasing the valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a pouring slurry temperature control system. Referring to fig. 1, a casting slurry temperature control system comprises a casting mixer 1, a heat exchange device 2 and an autoclave 3, wherein the heat exchange device 2 is connected between the casting mixer 1 and the autoclave 3. In the actual production process of the air-added brick, a plurality of autoclaves 3 need to be used, and in order to facilitate the technical scheme of the present application to be understood by those skilled in the art, in the present embodiment, two autoclaves 3 are provided.

Referring to fig. 2, the pouring mixer 1 includes three supporting legs 11 and a mixer body 12, and the three supporting legs 11 are fixedly connected to the bottom of the mixer body 12 so that the supporting legs 11 can support the mixer body 12. The mixer body 12 includes a heat conduction barrel 121 and a mixing barrel 122, the heat conduction barrel 121 is fixedly connected to the outer side wall of the mixing barrel 122, the top of the heat conduction barrel 121 is flush with the top of the mixing barrel 122, and the bottom of the heat conduction barrel 121 is flush with the bottom of the mixing barrel 122.

Referring to fig. 1 and 2, the heat conduction barrel 121 and the stirring barrel 122 enclose a closed heat conduction cavity 123, and the heat conduction cavity 123 is connected with the heat exchange device 2. Further, a temperature sensor is fixedly connected in the heat conduction cavity 123, and heat conduction liquid is filled in the heat conduction cavity 123 and filled in the heat conduction cavity 123. Specifically, in this embodiment, the heat conducting liquid is ordinary tap water.

Referring to fig. 2 and 3, the stirring paddle 13 is carried in the stirring barrel 122, the stirring paddle 13 is vertically arranged, the stirring paddle 13 penetrates through the top of the stirring barrel 122 and penetrates out of the stirring barrel 122, the top of the stirring barrel 122 is fixedly connected with the driving motor 14, the output end of the driving motor 14 and the stirring paddle 13 penetrate out of one end of the stirring barrel 122 and are fixedly connected, so that the driving motor 14 can drive the stirring paddle 13 to rotate. The top of the mixing tank 122 is communicated with three feeding pipes, namely a slurry feeding pipe 15, a cement lime powder feeding pipe 16 and an aluminum powder feeding pipe 17 according to the raw materials of the aerated brick.

Referring to fig. 1 and 4, the heat exchanging device 2 includes a casing 21, a heat exchanging assembly 22 and an exhaust assembly 23, the heat exchanging assembly 22 is disposed in the casing 21, and the exhaust assembly 23 is connected to the casing 21. Specifically, heat exchange assembly 22 includes heat exchange water flow plate 221 and heat exchange tube 222, and heat exchange water flow plate 221 fixed connection is in casing 21 inside wall, and heat exchange water flow plate 221 is the level setting, and heat exchange water flow plate 221 should be the platykurtic setting in order to increase heat transfer area. The top surface of the heat exchange water flow plate 221 is fixedly connected with a water pump 223, the input end of the water pump 223 is communicated with the heat exchange water flow plate 221, and the output end is communicated with the heat exchange tube 222.

Referring to fig. 1 and 2, the heat exchange pipe 222 includes an outflow section 2221 and an inflow section 2222, one end of the outflow section 2221 is communicated with an output end of the water pump 223, and the other end is communicated with an outer side wall of the heat-conducting tub 121; one end of the inflow section 2222 is communicated with the heat exchange water flow plate 221, the other end is communicated with the outer side wall of the heat conduction barrel 121, and the inflow section 2222 is provided with a water valve 224 for opening and closing the flow passage of the inflow section 2222. Further, the inflow section 2222 is disposed near the bottom of the heat conduction barrel 121, the outflow section 2221 is disposed near the top of the heat conduction barrel 121, and the outflow section 2221 is located above the inflow section 2222, so that the heat conduction liquid in the heat conduction barrel 121 can spontaneously flow from the nozzle of the outflow section 2221 to the nozzle of the inflow section 2222.

Referring to fig. 1 and 4, the exhaust assembly 23 includes a first exhaust pipe 231, a gas collecting pipe 232, a second exhaust pipe 233 and a heat preservation pipe 234, one end of the first exhaust pipe 231 is connected to the still kettle 3, and the other end of the first exhaust pipe 232 is connected to the gas collecting pipe 232, so that the number of the first exhaust pipes 231 is adapted to the number of the still kettles 3, in this embodiment, two first exhaust pipes 231 are provided, and the first exhaust pipes 231 correspond to the still kettles 3 one to one.

Referring to fig. 1 and 4, one end of each of the two first exhaust pipes 231, which is far away from the corresponding still kettle 3, is communicated with the same gas collecting pipe 232, one side of the gas collecting pipe 232 is communicated with the first exhaust pipe 231, and the other side of the gas collecting pipe 232 is communicated with the second exhaust pipe 233. The second exhaust pipe 233 penetrates through the casing 21, and one end of the second exhaust pipe 233 far away from the gas collecting pipe 232 penetrates into the casing 21 and faces the heat exchange water flow plate 221.

Referring to fig. 4, further, since the heat exchange water flow plate 221 is disposed in a flat shape, in order to make the heat exchange water flow plate 221 heated uniformly, in this embodiment, three second exhaust pipes 233 are disposed, and the three second exhaust pipes 233 are distributed along the length direction of the heat exchange water flow plate 221. Still further, the second exhaust pipe 233 is communicated with a condensate pipe 235 so that the condensate water accumulated in the second exhaust pipe 233 can be discharged out of the second exhaust pipe 233.

Referring to fig. 4 and 5, the heat preservation pipe 234 may be sleeved outside the first exhaust pipe 231 or the second exhaust pipe 233, in this embodiment, the heat preservation pipe 234 is sleeved outside the first exhaust pipe 231 and the second exhaust pipe 233 at the same time, the heat preservation pipe 234 sleeved outside the first exhaust pipe 231 is coaxially and fixedly connected with the first exhaust pipe 231, and the heat preservation pipe 234 arranged outside the second exhaust pipe 233 is coaxially and fixedly connected with the second exhaust pipe 233. In order to keep the outer walls of the first exhaust pipe 231 and the second exhaust pipe 233 warm, the insulating material may be filled between the insulating pipe 234 and the first exhaust pipe 231 and the second exhaust pipe 233, and the insulating pipe 234 may be vacuum-installed between the first exhaust pipe 231 and the second exhaust pipe 233. In this embodiment, the heat-insulating pipe 234 is disposed in vacuum with the first exhaust pipe 231 and the second exhaust pipe 233. A plurality of support links 236 are fixedly connected between the heat-insulating pipe 234 and the first and second exhaust pipes 231 and 233, so that the first and second exhaust pipes 231 and 233 can be fixedly connected in the heat-insulating pipe 234 through the support links 236. Meanwhile, the condensed water pipe 235 penetrates out of the heat preservation pipe 234 through the second exhaust pipe 233, and the pipe wall of the condensed water pipe 235 is fixedly connected with the pipe wall of the heat preservation pipe 234 in a seamless mode so as to guarantee the vacuum degree in the heat preservation pipe 234.

Referring to fig. 4 and 5, the bottom of the casing 21 is in arc transition, the bottom of the casing 21 is communicated with a drain pipe 211, and condensed water formed by condensing high-temperature steam can be discharged out of the casing 21 through the drain pipe 211.

Referring to fig. 1, a plurality of pressure relief valves 31 are arranged at the top of the still kettle 3, the first exhaust pipe 231 is communicated with one of the pressure relief valves 31 corresponding to the still kettle 3, and the rest of the pressure relief valves 31 are emptied, so that the pressure relief processing can be performed on the high pressure in the still kettle 3 when the heating is not needed.

The implementation principle of a pouring slurry temperature control system in the embodiment of the application is as follows: when pressure is released in the still kettle 3, high-temperature steam flows into the first exhaust pipes 231 from the opened pressure release valves 31, then the high-temperature steam in the still kettles 3 is gathered in the gas collecting pipes 232 through the corresponding first exhaust pipes 231 under the action of pressure difference, and finally is sprayed to the heat exchange water flow plates 221 through the three second exhaust pipes 233, and the high-temperature steam is condensed into condensed water on the surfaces of the heat exchange water flow plates 221 and releases a large amount of heat to heat the heat exchange water flow plates 221. At this time, the water pump 223 may be started and the water valve 224 may be opened, so that the heat transfer fluid circulates between the heat transfer fluid flow plate 221 and the heat transfer tube 222 for heat transfer, thereby increasing the temperature of the heat transfer fluid, and further increasing the temperature of the slurry in the agitator 122.

When the temperature sensor indicates that the temperature of the slurry is too low, the pressure release valves 31 of the plurality of autoclaves 3 may be opened to increase the amount of high-temperature steam sprayed to the heat exchange water flow plate 221, thereby rapidly increasing the temperature of the slurry.

When the temperature sensor shows that the temperature of the slurry is too high, the continuous heating of the slurry by the heat-conducting liquid can be stopped by adjusting the number of the still kettles 3, stopping the water pump 223, or closing the valve of the water valve 224, so that the temperature control of the pouring slurry is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a ground paste temperature control system pours, includes pouring mixer (1) and evaporates pressure cauldron (3), its characterized in that: a heat exchange device (2) is connected between the pouring stirrer (1) and the still kettle (3);

the pouring mixer (1) comprises a heat conduction barrel (121) and a mixing barrel (122), wherein the heat conduction barrel (121) is connected to the outside of the mixing barrel (122), a heat conduction cavity (123) is formed between the heat conduction barrel (121) and the mixing barrel (122), heat conduction liquid is filled in the heat conduction cavity (123), and a temperature sensor is arranged in the heat conduction cavity (123); the still kettle (3) is provided with a pressure release valve (31);

the heat exchange device (2) comprises a heat exchange water flow plate (221) and an exhaust assembly (23) used for supplying heat to the heat exchange water flow plate (221), the heat exchange water flow plate (221) is communicated with the heat conduction barrel (121), and the exhaust assembly (23) is connected with the pressure release valve (31).

2. The casting slurry temperature control system of claim 1, wherein: the plurality of the still kettles (3) are arranged, the exhaust assembly (23) comprises a plurality of first exhaust pipes (231), a gas collecting pipe (232) and second exhaust pipes (233), the number of the first exhaust pipes (231) is the same as that of the still kettles (3), the first exhaust pipes correspond to the second exhaust pipes one by one, one ends of the first exhaust pipes (231) are communicated with one of the pressure relief valves (31) corresponding to the still kettles (3), the other ends of the first exhaust pipes are communicated with the gas collecting pipe (232), one ends of the second exhaust pipes (233) are communicated with the gas collecting pipe (232), and the other ends of the second exhaust pipes face the heat exchange water flow plate (221).

3. The casting slurry temperature control system of claim 2, wherein: the exhaust assembly (23) further comprises a heat preservation pipe (234), and the first exhaust pipe (231) and/or the second exhaust pipe (233) are/is arranged in the heat preservation pipe (234).

4. The casting slurry temperature control system of claim 3, wherein: the second exhaust pipe (233) is communicated with a condensate pipe (235) for discharging condensate water condensed in the second exhaust pipe (233).

5. The casting slurry temperature control system of any one of claims 1-4, wherein: the heat exchange water flow plate (221) and the heat conduction barrel (121) are communicated with each other through a heat exchange tube (222), the heat exchange tube (222) comprises an outflow section (2221), the outflow section (2221) is communicated with the heat conduction barrel (121), the outflow section (2221) is communicated with a water pump (223), the input end of the water pump (223) is communicated with the heat exchange water flow plate (221), and the output end of the water pump (223) is communicated with the outflow section (2221).

6. The casting slurry temperature control system of claim 5, wherein: the heat exchange tube (222) further comprises an inflow section (2222) and a water valve (224) for opening and closing the inflow section (2222).

7. The casting slurry temperature control system of any one of claims 2-4, wherein: heat transfer device (2) include casing (21), heat transfer water flow plate (221) fixed connection in casing (21), second blast pipe (233) wear to establish and bear in the lateral wall of casing (21), the shell bottom intercommunication of casing (21) has drain pipe (211).

8. The casting slurry temperature control system of claim 7, wherein: the shell bottom of the shell (21) is in arc transition arrangement.

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