Waste heat recovery device of rice steaming machine

Abstract

The utility model provides a waste heat recovery device of a rice steaming machine, and belongs to the technical field of yellow rice wine base wine. The rice steaming machine waste heat recovery device comprises a heat exchange box, a heat preservation barrel and an air bag. A heat exchange pipe is arranged in the heat exchange box, the circulating pipe is communicated with the water inlet pipe, an electromagnetic valve is installed at one end of the circulating pipe, and a water drainage pipe is connected to a side plate of the heat preservation barrel. The bottom of the air bag communicates with the top of the heat exchange box, a driving mechanism used for driving the air bag to stretch out and draw back is installed at the top of the heat exchange box, a circulating pipe is arranged at the bottom of the heat preservation barrel and used for circulating cooled water in the heat preservation barrel into the heat exchange box again to be heated, and steam is effectively utilized for heat exchange utilization. High-temperature and high-pressure gas generated in the rice steaming process is utilized through heat exchange, energy waste caused by the fact that the high-temperature and high-pressure gas is directly exhausted outdoors is avoided, the temperature of the working environment is effectively controlled, the problem that a large amount of heat energy is lost due to traditional heat exchange is solved, effective recycling can be conducted, and heat waste is avoided.

Description

Technical Field

[0001] This application relates to the field of rice wine base liquor, and more specifically, to a waste heat recovery device for a rice steamer. Background Technology

[0002] Currently, the traditional brewing process for Shaoxing rice wine mainly includes: soaking rice → steaming the rice → adding yeast and mixing well → saccharification in a fermentation pit → adding rice and wheat koji to a large ceramic vat for further fermentation → post-fermentation in a fermentation tank → pressing → boiling and sterilization → aging. In the traditional brewing process, the final base wine has a relatively low alcohol content, ranging from 15-18%. However, as the scale of Shaoxing rice wine production continues to expand, the amount of rice required for steaming is also constantly increasing.

[0003] The existing technical solutions mentioned above have the following drawbacks: the high temperature and pressure generated during the rice steaming process are directly discharged outdoors, which not only wastes a large amount of energy, but also leads to high working environment temperature. Using only heat exchange tubes for heat exchange will result in a large loss of heat energy. If water is sprayed directly into the high temperature and pressure gas, a large amount of steam will be generated. This steam cannot be effectively recovered and utilized, resulting in a large waste of heat. Utility Model Content

[0004] To overcome the above shortcomings, this application provides a waste heat recovery device for rice steamers, which aims to improve the problem of large amounts of steam generated during rice steaming that cannot be effectively utilized.

[0005] This application provides a waste heat recovery device for a rice steamer, including a heat exchange box, an insulation bucket, and an air bag;

[0006] The heat exchange box has a built-in heat exchange tube. One end of the heat exchange tube is connected to an air inlet, and the other end of the heat exchange tube is connected to an air outlet. The heat exchange box is connected to an inlet water pipe and an outlet water pipe.

[0007] The bottom of the insulated bucket is connected to a circulation pipe, which is connected to the water inlet pipe. A solenoid valve is installed at one end of the circulation pipe, and a drain pipe is connected to the side plate of the insulated bucket.

[0008] The airbag is installed on the top of the heat exchange box, and the bottom of the airbag is connected to the top of the heat exchange box. A drive mechanism for driving the airbag to extend and retract is installed on the top of the heat exchange box.

[0009] In a preferred embodiment of this utility model, a pressure sensor and a temperature sensor are provided inside the heat exchange box, and the air inlet and air outlet are respectively fixed to the outer surface of the heat exchange box.

[0010] In a preferred embodiment of this utility model, the heat exchange box has a water inlet at the bottom, one end of the water inlet pipe is connected to the water inlet, and the heat exchange box has a water outlet at the top, one end of the water outlet pipe is connected to the water outlet.

[0011] In a preferred embodiment of this utility model, a one-way inlet valve is installed at the inlet end of the inlet pipe, a one-way drain valve is installed at the outlet end of the outlet pipe, and a quick connector is installed at the drain pipe port.

[0012] In a preferred embodiment of this utility model, temperature sensor A, temperature sensor B, and temperature sensor C are respectively installed at the bottom, middle, and top of the heat preservation barrel, and temperature sensor D is installed at the air outlet port of the air outlet.

[0013] In a preferred embodiment of this utility model, the driving mechanism includes a reversible motor and a screw, a pressure plate is connected to the top of the airbag, the lower end of the screw is rotatably engaged with the top of the heat exchange box, the upper end of the screw is threadedly connected to the pressure plate, and the drive shaft of the reversible motor is drivenly connected to the screw.

[0014] In a preferred embodiment of this utility model, the drive shaft of the forward and reverse motor is coaxially fixed with a drive wheel, and one end of the screw is coaxially fixed with a driven wheel. The drive wheel and the driven wheel are connected by a synchronous belt.

[0015] In a preferred embodiment of this utility model, the forward and reverse motor is fixedly connected to the heat exchange box, two air bladders are provided, the screw is disposed between the two air bladders, the pressure plate is fixed with a nut, the screw is threadedly connected to the nut, a measuring ruler is erected on one side of the air bladder, the lower end of the measuring ruler is fixed to the heat exchange box, and the upper end of the measuring ruler slides through a through groove opened on the surface of the pressure plate.

[0016] In a preferred embodiment of this utility model, a circulation pump is installed on one side of the insulated bucket, the pump's suction end is connected to the bottom of the insulated bucket, and the pump's discharge end is connected to the circulation pipe.

[0017] Beneficial effects:

[0018] 1. Connect the air inlet to the pressure relief valve or exhaust port of the steamer. The generated steam will circulate through the heat exchange tube and then be discharged from the air outlet. Since the heat exchange tube is immersed in the cold water in the heat exchange box, the heat in the steam will exchange with the cold water. The air bladder will expand and contract through the drive mechanism, thereby adjusting the size of the air bladder and changing the gas pressure and water volume in the heat exchange box as needed. A regulating valve is installed at the air inlet end of the heat exchange tube, and a temperature sensor D is installed at the air outlet port to regulate the steam flow rate and ensure that the heat in the steam is repeatedly absorbed and utilized.

[0019] 2. Cold water is supplied to the heat exchange box via an external water inlet pipe. Since the heated water in the heat exchange box will be layered at the top, it is introduced into the insulation container through the outlet pipe for storage, so that it can be directly used when steaming rice later, thus improving the heat utilization rate. A circulation pipe is set at the bottom of the insulation container to recirculate the cooled water in the insulation container back into the heat exchange box for heating, ensuring that the solution temperature in the insulation container is not lower than the preset value. The steam is effectively used for heat exchange, and the high-temperature and high-pressure gas generated during the rice steaming process is utilized through heat exchange, avoiding direct discharge to the outside and causing energy waste. It also effectively controls the temperature of the working environment, reducing the problem of large heat loss in traditional heat exchange, and can effectively recover and reuse heat, avoiding heat waste. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the waste heat recovery device for a rice steamer provided in the embodiments of this application;

[0022] Figure 2 A three-dimensional structural diagram of the drive mechanism provided for an embodiment of this application;

[0023] Figure 3 A three-dimensional structural diagram of the heat exchange tube provided for an embodiment of this application;

[0024] Figure 4 A schematic diagram of the V-shaped tube front view structure provided for an embodiment of this application;

[0025] Figure 5 This is a cross-sectional structural diagram of the drain pipe provided in the embodiments of this application.

[0026] In the diagram: 100, heat exchange box; 101, water inlet pipe; 103, water outlet pipe; 110, heat exchange tube; 111, air inlet; 113, air outlet; 115, drain pipe; 117, drain valve; 300, insulation tank; 301, drain pipe; 310, circulation pipe; 330, circulation pump; 500, airbag; 510, drive mechanism; 511, forward and reverse motor; 513, screw; 515, pressure plate; 517, nut; 519, measuring ruler. Detailed Implementation

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0030] Please see Figures 1-5 This utility model provides a waste heat recovery device for a rice steamer, including a heat exchange box 100, a heat preservation barrel 300, and an air bag 500.

[0031] The heat exchange box 100 has a heat exchange tube 110 inside. One end of the heat exchange tube 110 is connected to an air inlet 111, and the other end of the heat exchange tube 110 is connected to an air outlet 113. The heat exchange box 100 is connected to a water inlet pipe 101 and a water outlet pipe 103.

[0032] The bottom of the insulated bucket 300 is connected to a circulation pipe 310, which is connected to the water inlet pipe 101. A solenoid valve is installed at one end of the circulation pipe 310, and a drain pipe 301 is connected to the side plate of the insulated bucket 300.

[0033] The airbag 500 is installed on the top of the heat exchange box 100, and the bottom of the airbag 500 is connected to the top of the heat exchange box 100. A drive mechanism 510 for driving the airbag 500 to extend and retract is installed on the top of the heat exchange box 100.

[0034] In a specific embodiment of this utility model, a pressure sensor and a temperature sensor are provided inside the heat exchange box 100. The air inlet 111 and the air outlet 113 are respectively fixed on the outer surface of the heat exchange box 100. The pressure sensor and the temperature sensor are used to sense changes in internal temperature and pressure, thereby controlling the expansion and contraction of the airbag 500 for adjustment.

[0035] In a specific embodiment of this utility model, the heat exchange box 100 has a water inlet at the bottom, one end of the water inlet pipe 101 is connected to the water inlet, the heat exchange box 100 has a water outlet at the top, and one end of the water outlet pipe 103 is connected to the water outlet; utilizing the principle that hot water with lower density floats, the heated hot water at the top of the heat exchange box 100 is discharged for storage or utilization.

[0036] In a specific embodiment of this utility model, a one-way inlet valve is installed at the inlet end of the inlet pipe 101, a one-way drain valve is installed at the outlet end of the outlet pipe 103, and a quick connector is installed at the port of the drain pipe 301. The one-way valve effectively prevents liquid backflow and allows the liquid to flow in a preset direction.

[0037] In a specific embodiment of this utility model, temperature sensors A, B, and C are respectively installed at the bottom, middle, and top of the heat preservation tank 300, and temperature sensor D is installed at the air outlet of the air outlet 113. The water temperature at the upper, middle, and lower positions of the heat preservation tank 300 is monitored by temperature sensors A, B, and C respectively. When the bottom temperature is lower than the preset value, a solenoid valve is installed at one end of the circulation pipe 310 to introduce the low-temperature liquid at the bottom into the heat exchange box 100 for reheating.

[0038] In a specific embodiment of this utility model, the drive mechanism 510 includes a forward and reverse motor 511 and a screw 513. The top of the airbag 500 is connected to a pressure plate 515. The lower end of the screw 513 is rotatably engaged with the top of the heat exchange box 100. The upper end of the screw 513 is threadedly connected to the pressure plate 515. The drive shaft of the forward and reverse motor 511 is connected to the screw 513 in a transmission connection.

[0039] In a specific embodiment of this utility model, the drive shaft of the forward and reverse motor 511 is coaxially fixed with a drive wheel, and one end of the screw 513 is coaxially fixed with a driven wheel. The drive wheel and the driven wheel are connected by a synchronous belt.

[0040] In a specific embodiment of this utility model, the forward and reverse motor 511 is fixedly connected to the heat exchange box 100. Two airbags 500 are provided, and the screw 513 is disposed between the two airbags 500. The pressure plate 515 is fixed with a nut 517, and the screw 513 is threadedly connected to the nut 517. A measuring ruler 519 is erected on one side of the airbag 500. The lower end of the measuring ruler 519 is fixed to the heat exchange box 100, and the upper end of the measuring ruler 519 slides through a through groove opened on the surface of the pressure plate 515.

[0041] In a specific embodiment of this utility model, a circulation pump 330 is installed on one side of the heat preservation tank 300. The water pumping end of the circulation pump 330 is connected to the bottom of the heat preservation tank 300, and the draining end of the circulation pump 330 is connected to the circulation pipe 310. The addition of the circulation pump 330 provides flow power for water circulation, so that the solution at the bottom of the heat preservation tank 300 can be smoothly introduced into the heat exchange box 100.

[0042] Please see Figures 3-5 In a specific embodiment of this utility model, the heat exchange tube 110 is formed by multiple V-shaped tubes arranged side by side and connected end to end. A drain pipe 115 is connected to the bottom bend of the V-shaped tube. A drain valve 117 is installed at the lower end of the drain pipe 115. The drain valve 117 is a one-way drain valve. A throttling valve or flow control valve is installed at the outlet port 113. Since the steam will liquefy and form water droplets after cooling, which remain on the inner wall of the heat exchange tube 110, by designing the heat exchange tube 110 as a V-shaped tube, the accumulated water droplets are concentrated in the drain pipe 115 at the bottom of the V-shaped tube by gravity. By installing a throttling valve at the outlet port 113, the steam pressure passing through the heat exchange tube 110 is increased by controlling the throttling valve. When the pressure is greater than the water pressure in the heat exchange box 100, the solution accumulated in the drain pipe 115 will be discharged into the heat exchange box 100 through the drain valve 117, realizing the reuse of the liquefied water droplets.

[0043] The working principle of the waste heat recovery device for this rice steamer is as follows: During use, the air inlet 111 is connected to the pressure relief valve or exhaust port of the steamer. The generated steam circulates through the heat exchange pipe 110 and is discharged from the air outlet 113. Since the heat exchange pipe 110 is immersed in cold water in the heat exchange box 100, the heat in the steam exchanges with the cold water. The drive mechanism 510 drives the air bladder 500 to expand and contract, thereby adjusting the internal space of the air bladder 500, changing the gas pressure inside the heat exchange box 100, and the water volume within the heat exchange box 100. This can be adjusted as needed. A regulating valve is installed at the air inlet end of the heat exchange pipe 110, in conjunction with a temperature sensor D installed at the air outlet 113, to regulate the steam flow rate and ensure that the heat in the steam is repeatedly absorbed and utilized. The water inlet pipe... An external water source 101 provides cold water input to the heat exchange box 100. Since the water being heated in the heat exchange box 100 will be layered on top, it is introduced into the insulation tank 300 through the water outlet pipe 103 for storage, so that it can be used directly when steaming rice later, thereby improving the heat utilization rate. A circulation pipe 310 is set at the bottom of the insulation tank 300 to recirculate the cooled water in the insulation tank 300 back into the heat exchange box 100 for heating, ensuring that the solution temperature in the insulation tank 300 is not lower than the preset value. It effectively utilizes steam for heat exchange, and the high-temperature and high-pressure gas generated during the rice steaming process is utilized through heat exchange, avoiding direct discharge to the outside and causing energy waste. It also effectively controls the temperature of the working environment, reduces the problem of large heat loss in traditional heat exchange, and can effectively recover and utilize heat, avoiding heat waste.

[0044] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A rice steaming machine waste heat recovery device, characterized by, The application relates to a heat exchange device. The heat exchange device comprises a heat exchange box (100) which is internally provided with a heat exchange pipe (110), one end of the heat exchange pipe (110) is connected with an air inlet (111), the other end of the heat exchange pipe (110) is connected with an air outlet (113), the heat exchange box (100) is communicated with a water inlet pipe (101) and a water outlet pipe (103); a heat preservation barrel (300) which is communicated with a circulating pipe (310) at the bottom, the circulating pipe (310) is communicated with the water inlet pipe (101), one end of the circulating pipe (310) is provided with an electromagnetic valve, the heat preservation barrel (300) is connected with a drain pipe (301) on the side plate; an air bag (500) which is arranged on the top of the heat exchange box (100), the bottom of the air bag (500) is communicated with the top of the heat exchange box (100), and a driving mechanism (510) for driving the air bag (500) to stretch and retract is arranged on the top of the heat exchange box (100). The heat exchange box (100) is internally provided with a pressure sensor and a temperature sensor, and the air inlet (111) and the air outlet (113) are fixed on the outer surface of the heat exchange box (100). The bottom of the heat exchange box (100) is provided with a water inlet, one end of the water inlet pipe (101) is connected with the water inlet, the upper end of the heat exchange box (100) is provided with a water outlet, and one end of the water outlet pipe (103) is connected with the water outlet.

2. The rice steaming machine waste heat recovery device according to claim 1, characterized in that, The water inlet end of the water inlet pipe (101) is provided with a one-way water inlet valve, the water outlet end of the water outlet pipe (103) is provided with a one-way water outlet valve, and the port of the drain pipe (301) is provided with a quick connector.

3. The rice steaming machine waste heat recovery device according to claim 1, characterized in that, The bottom, the middle and the top of the heat preservation barrel (300) are respectively provided with a temperature sensor A, a temperature sensor B and a temperature sensor C, and the air outlet port of the air outlet (113) is provided with a temperature sensor D.

4. The rice steaming machine waste heat recovery device according to claim 1, characterized in that, The driving mechanism (510) comprises a reversible motor (511) and a screw rod (513), the top of the air bag (500) is connected with a pressing plate (515), the lower end of the screw rod (513) is rotatably clamped on the top of the heat exchange box (100), the upper end of the screw rod (513) is threadedly connected with the pressing plate (515), and the driving shaft of the reversible motor (511) is in transmission connection with the screw rod (513).

5. The rice steaming machine waste heat recovery device according to claim 1, characterized in that, The driving shaft of the reversible motor (511) is coaxially fixed with a driving wheel, one end of the screw rod (513) is coaxially fixed with a driven wheel, and the driving wheel and the driven wheel are connected through a synchronous belt.

6. The rice steaming machine waste heat recovery device according to claim 1, characterized in that, ​ 7. The rice steaming machine waste heat recovery device according to claim 6, characterized in that, ​ 8. The rice steaming machine waste heat recovery device according to claim 6, characterized in that, The positive and negative rotation motor (511) is fixedly connected with the heat exchange box (100), the air bag (500) is provided with two, the screw rod (513) is arranged between the two air bags (500), the pressing plate (515) is fixedly provided with a nut (517), the screw rod (513) is threadedly connected with the nut (517), one side of the air bag (500) is vertically provided with a measuring scale (519), the lower end of the measuring scale (519) is fixed with the heat exchange box (100), and the upper end of the measuring scale (519) slidably penetrates the through groove formed in the surface of the pressing plate (515).

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