CN216744527U

CN216744527U - Heat energy recovery system applied to food processing workshop

Info

Publication number: CN216744527U
Application number: CN202220217496.8U
Authority: CN
Inventors: 魏云
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-14
Anticipated expiration: 2032-01-26

Abstract

The utility model provides a heat energy recovery system applied to a food processing workshop, which belongs to the technical field of heat energy recovery and comprises a tunnel type fryer and a tunnel type steam box, wherein a first recovery cover is communicated above the tunnel type fryer; the oil smoke steam recovered by the first recovery cover is communicated to a heat exchanger system through a spray tower oil smoke purification system, the steam recovered by flow balance boxes at two ends of the tunnel type steam box is directly communicated to the heat exchanger system, and the heat exchange of the heat exchanger system is used for supplying heat to a fine dried noodle drying room or generating steam to steam noodles in the steam box; the utility model realizes the high-efficiency recovery and utilization of the smoke in the food processing process, improves the heat energy utilization rate of the whole production line system and reduces the cost.

Description

Heat energy recovery system applied to food processing workshop

Technical Field

The utility model relates to the technical field of heat energy recovery, in particular to a heat energy recovery system applied to a food processing workshop.

Background

The tunnel type steam box and the tunnel type fryer are both provided with material inlets and material outlets, continuous cooking and frying are realized by continuously feeding and discharging materials through the material inlets and the material outlets, the tunnel type steam box is adopted for cooking, 1-2 tons of 105-110 ℃ clean steam are sprayed to a single flow waterline of the steam box in each hour, and the steam heat utilization rate in the steam box is calculated to be less than 50% according to data. Food is continuously cooked through the continuous inlet and outlet of the material inlet and outlet, and the material inlet and outlet of the steam box are in an open state because the steam box needs to continuously feed and discharge the material, and steam of cooked food in the steam box flows out from the material inlet and outlet and is discharged to the air through the chimney. The aim of food frying is dehydration, 3-3.5 tons of food per hour enters a frying pan for frying and dehydration, and the dehydration amount is 40-50 percent, which is equivalent to that about 1.5 tons of water is evaporated by frying into oil fume water vapor and naturally discharged through a chimney by a frying pan. Because the deep fryer needs to continuously feed and discharge materials, the material inlet and outlet of the deep fryer is in an open state, after outside air enters the deep fryer through the material inlet and outlet of the deep fryer, fume steam in the deep fryer meets the heat absorption of cold air and then becomes condensed water to fall into inner oil, the edible oil in the deep fryer deteriorates and can not be eaten due to the circulation, in order to prevent the air from entering the deep fryer, the deep fryer is in positive pressure, the fume steam in the deep fryer flows into a workshop through the material inlet and outlet of the deep fryer, and the high-temperature ground of the workshop and the surface of equipment are both greasy dirt. The pressure in the frying pan is not favorable for the evaporation of water in the food, and the dehydration efficiency is reduced. In recovering the heat of the low-temperature steam with a low density, the most difficult problem is that the steam is mixed with air, and the mixed air not only reduces the temperature and has a lower density, but also causes instability or non-recoverability of the serious condition.

The oil smoke in the oil smoke steam, the oil used for fried food is generally palm oil, the smoke point of the palm oil is 233 ℃, and oil molecules are formed after entering 100-degree saturated steam. The oil smoke vapor can be recycled after oil smoke removal.

Steam is an energy source and an industrial product, and the production of industrial steam also needs to consume coal, electricity, oil, natural gas and other energy sources, so that steam energy conservation can help industrial enterprises to save energy expenditure and reduce emission, and brings synchronous benefits of internal performance and external performance. The condensed water and the excess steam generated in the process are difficult to directly recycle due to the low pressure and the impurities, and are often directly discharged in the form of secondary steam, so that huge heat energy waste and carbon dioxide discharge are caused.

Two kinds of heat can be recycled, the first kind is that the dried noodle production drying is generally low-temperature drying, the temperature in the drying room is about 60 ℃, the heating temperature is more than 70 ℃ to meet the production requirement, the utility model heats the water by a complete heat exchange system to the temperature of more than 70 ℃ and supplies the water to a dried noodle workshop for constant temperature and constant current circulation, thereby improving the heat energy utilization rate of the whole production line system and reducing the production cost. The second is that the high-temperature water generated by heat exchange is subjected to MVR or TVR negative pressure evaporation, and steam generated by pressure rise is used for steaming surfaces of the steam box.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a heat energy recovery system applied to a food processing workshop, which realizes efficient recovery and utilization of smoke and steam in a food processing technological process, improves the heat energy utilization rate of an overall production line system, and reduces the production cost.

In order to solve the technical problems, the utility model provides a heat energy recovery system applied to a food processing workshop, which comprises a tunnel fryer and a tunnel steam box, wherein a first recovery cover is communicated above the tunnel fryer;

the oil smoke steam recovered by the first recovery cover is communicated to the heat exchanger system through the spray tower oil smoke purification system after passing through the first high-pressure air feeder, and the steam recovered by the flow balance boxes at the two ends of the tunnel type steam box is directly communicated to the heat exchanger system after passing through the second high-pressure air feeder and assists in heat energy recovery through the heat exchanger system.

Furthermore, the flow balance box comprises a box body, sealing baffles capable of swinging left and right are arranged on the front side and the rear side of the bottom end of the box body, a spring reset assembly is arranged on one side of the top end of each sealing baffle, and a sealing assembly is arranged on the top end of each sealing baffle;

the top outlet of the box body is provided with a flow regulating valve, and the inner wall of the box body is provided with a condensate water recovery tank with an L-shaped section.

Further, sealing baffle's top is equipped with the baffle axle that supports in the box, seal assembly includes the slider seat, the slider seat includes the spout towards baffle axle one side, be equipped with the slider in the spout, the top fixedly connected with pressure spring of slider, the top of pressure spring and the top fixed connection of spout, the bottom of slider is the concave arc face and the concave arc face closely laminates with the baffle axle.

Furthermore, the spring reset assembly comprises a spring shaft seat fixed in the box body, a reset spring is sleeved on the spring shaft seat, a spring positioning shaft is arranged on one side, close to the baffle plate shaft, of the spring shaft seat, a rocker arm pointing to the spring shaft seat is arranged on one side of the baffle plate shaft, a rocker arm shaft is arranged on one side of the rocker arm, and two free straight sections of the reset spring are respectively arranged on the spring positioning shaft and the upper side and the lower side of the rocker arm shaft.

Furthermore, an adjusting component for driving the sealing baffle to move up and down is arranged above the sliding block seat on one side of the flow balancing box at the inlet and the outlet at the two ends of the tunnel type fryer.

Further, the regulating assembly is including locating the regulating box of flow balance case both sides, be equipped with engaged turbine, worm in the regulating box, the one end of worm stretches out the regulating box and just stretches out to serve and be equipped with adjustment handle, in the pivot of regulating box was located to the turbine, be equipped with the gear in this pivot, the top of take-up housing is equipped with the slide that is fixed in on the flow balance case, and the cross-section of slide is the U type, be equipped with in the slide with gear engagement's rack.

Further, the spray tower oil fume purification system comprises a spray tower, one side of the bottom end of the spray tower is provided with a communicated filter tower, and the bottom end of the spray tower is provided with an oil-water separation tank communicated with the spray tower;

the oil-water separation tank is communicated with a spray pipe in the spray tower through a spray pump, and the bottom end of the filter tower is communicated with the oil-water separation tank through a pipeline.

Furthermore, baffle plates which are vertically distributed in a staggered mode at intervals are arranged in the spray tower, and spray heads which are communicated with the spray pipes are arranged above the baffle plates;

the filter tower is internally provided with a wire mesh demister, the lower part of the wire mesh demister is provided with a baffle plate demister at intervals, and the top end of the filter tower is a steam outlet.

Further, be equipped with upper baffle plate, lower baffling board in the oil water separating box, upper baffle plate and lower baffling board are crisscross distribution from top to bottom, the top in the oil water separating box is equipped with the overflow board, be equipped with the drain on the overflow board, one side of oil water separating box is equipped with the batch oil tank, and one side of batch oil tank is equipped with the oil drain outlet and the bottom is equipped with the oil bath drain, and one side that the water tank of spray tower one end was kept away from to the oil water separating box is equipped with moisturizing pump interface and spray pump interface.

Furthermore, the heat exchanger system comprises a first steam-water separator, and steam separated by the first steam-water separator enters the heat exchanger after being pressurized and heated by the first MVR and enters the second steam-water separator through the heat exchanger and the throttle valve.

Furthermore, a drain pump is arranged on a condensed water discharge pipeline of the second steam-water separator, a branch pipeline is arranged on the condensed water discharge pipeline, and the branch pipeline is communicated with a spray pipe of the spray tower through a purifier water supply pump.

Furthermore, the thermal cycle pipeline system comprises a water outlet pipeline and a water return pipeline, a finned tube radiator is arranged in the fine dried noodle drying room, and a cycle pipeline is formed between the heat exchanger and the finned tube radiator through the water outlet pipeline and the water return pipeline.

Furthermore, be equipped with vapor-water mixture heater on the outlet pipe way, vapor-water mixture heater externally communicates the raw steam generation system, be equipped with electrical control valve on the pipeline of vapor-water mixture heater and raw steam generation system intercommunication, one side that electrical control valve is close to vapor-water mixture heater is equipped with the check valve, and the opposite side is equipped with the maintenance valve, be equipped with the water storage tank on the return water pipeline, be equipped with the circulating pump group between water storage tank and the heat exchanger, the water storage tank externally communicates the softened water tank through the moisturizing pump.

Further, the heat exchanger system realizes heat energy recovery through being communicated with the steam generation system.

Furthermore, the steam generation system comprises a steam-liquid separator evaporator communicated with the water outlet end of the heat exchanger, the steam-liquid separator evaporator is communicated with the liquid storage tank on one side of the steam-liquid separator, the water outlet at the bottom end of the liquid storage tank is communicated with the water inlet of the heat exchanger through a second circulating pump, the steam outlet at the top end of the steam-liquid separator is communicated with the secondary steam-water separator, and the steam outlet of the secondary steam-water separator is communicated to the second MVR or TVR.

Furthermore, one side of the liquid storage tank is provided with a water supply detection tank, and a pipeline communicated between the liquid storage tank and the water supply detection tank is provided with an overhaul valve, a water replenishing pump, an adjusting valve and a check valve.

Furthermore, a pipeline for communicating the water outlet end of the heat exchanger with the vapor-liquid separator evaporator is communicated with the high-temperature condensed water inlet through a branch pipe.

Furthermore, a branch pipeline is arranged on a pipeline communicated with the liquid storage tank and the heat exchanger, a condensate water discharge pump is arranged on the branch pipeline, maintenance valves are arranged on two sides of the condensate water discharge pump, and a check valve is arranged between the condensate water discharge pump and a condensate water discharge end.

The technical scheme of the utility model has the following beneficial effects:

1. according to the utility model, the flow balance boxes at two ends of the tunnel type steam box can effectively prevent steam in the steam box from being discharged outwards, the discharged steam is recovered, air is prevented from entering the steam recovery system when the discharged steam is recovered, and the escaped part of steam is recovered through the mixed steam recovery cover.

2. According to the utility model, under the action of the flow balancing boxes at two ends of the tunnel type fryer, oil fume water vapor generated when the fryer fries foods is recovered, the oil fume water vapor is prevented from flowing into a workshop and being discharged outwards, outside air is prevented from entering the fryer, and a small amount of recovered oil fume is discharged after passing through the purifier.

3. According to the utility model, the recycled and recovered steam is recompressed by the first MVR mechanical steam to increase pressure and enthalpy, then water is heated by the heat exchanger, the hot water is conveyed to a noodle production workshop by the circulating pump to be heated by a plurality of groups of finned tube radiators, and the produced wet noodles are dried by the finned heat exchanger by heating circulating air, so that the heat energy utilization rate of the whole production line system is improved, and the production cost is reduced.

4. According to the utility model, oil molecules in the oil smoke water vapor are separated, and new saturated vapor is generated for other uses, so that the energy waste caused by heat energy emission is effectively solved, the separated oil and water are subjected to oil-water separation, and the separated oil is recovered, so that the pollution caused by the oil is avoided.

5. In the utility model, the low-temperature and low-pressure steam heat which is discharged and cannot be used is recovered through MVR (mechanical vapor recompression) heat energy, water is heated through heat exchange, and TVR (thermal vapor recompression) or MVR (mechanical vapor recompression) is utilized to carry out negative pressure evaporation, so that the heat enthalpy is increased in compression and pressurization to meet the fresh steam of the production process, the energy emission is prevented, and the environmental protection problem is solved.

6. According to the utility model, high-temperature condensed water discharged by the conventional indirect heating is secondarily utilized, and negative pressure evaporation is generated under the suction of TVR (thermal vapor recompression) or MVR (mechanical vapor recompression) to deeply extract heat in the condensed water, so that the discharge temperature is reduced, and the energy waste is reduced.

Drawings

FIG. 1 is a schematic view of a tunnel fryer in accordance with the present invention;

FIG. 2 is a schematic view of the tunnel steamer of the present invention;

FIG. 3 is a schematic view of the flow balance box at the port of the tunnel fryer in accordance with the present invention;

FIG. 4 is a schematic view of the seal retainer cooperating with the spring return assembly and the seal assembly of the present invention;

FIG. 5 is a schematic view of a seal stop of the present invention fitted with an adjustment assembly;

FIG. 6 is a schematic view of a flow balancing box at the inlet of the tunnel steamer of the present invention;

FIG. 7 is a schematic view of a flow balancing box at the exit of the tunnel steamer in the present invention;

FIG. 8 is a schematic view of a spray tower fume purification system of the present invention;

FIG. 9 is a top view of the oil-water separation tank of the present invention;

FIG. 10 is a side view of the oil-water separating tank of the present invention;

FIG. 11 is a system diagram of the spray tower oil fume purification system, a thermal cycle pipeline system and a noodle drying room in the utility model;

FIG. 12 is a system diagram of a heat exchanger system in cooperation with a steam generation system of the present invention;

FIG. 13 is a system diagram illustrating the specific use of a second MVR in a steam generation system.

1. A tunnel fryer; 10. a first recycling cover; 11. a lower sealing plate;

2. a tunnel type steam box; 21. a mixed steam recovery cover;

3. a flow balancing box; 31. a box body; 32. sealing the baffle; 321. a baffle shaft; 322. a rocker arm; 323. a rocker shaft; 33. a spring return assembly; 331. a spring shaft seat; 332. a return spring; 333. a spring positioning shaft; 34. a seal assembly; 341. a slider seat; 342. a chute; 343. a slider; 344. a pressure spring; 35. a flow regulating valve; 36. a condensate recovery tank; 37. an adjusting box; 371. a turbine; 372. a worm; 373. a gear; 374. a slideway; 375. a rack;

5. a spray tower oil fume purification system; 51. a spray tower; 511. a baffle plate; 512. a shower pipe; 513. a shower head; 52. a filtration tower; 521. a wire mesh demister; 522. a baffle demister; 53. an oil-water separation tank; 5301. a water replenishing pump connector; 5302. a spray pump interface; 531. an upper baffle plate; 532. a lower baffle plate; 533. an oil storage tank; 534. an overflow plate; 5341. a sewage draining outlet; 54. a spray pump;

6. a heat exchanger system; 601. a first steam-water separator; 602. a first MVR; 603. a heat exchanger; 604. a second steam-water separator; 605. a throttle valve;

7. a thermal cycle piping system; 71. a water outlet pipeline; 711. a steam-water mixing heater; 7110. a raw steam generation system; 72. a water return pipeline; 721. a water storage tank; 722. a circulating pump group; 723. a water replenishing pump;

8. a fine dried noodle drying room; 81. a finned tube radiator; 82. a collection tank; 83. a water distribution tank;

9. a steam generation system; 91. a vapor-liquid separator evaporator; 911. a swirling flow groove; 912. a steam baffle plate; 93. a second circulation pump; 94. a secondary steam-water separator; 95. a second MVR; 96. a water supply detection tank; 97. TVR; 98. the condensed water is discharged out of the pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 13 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model, are within the scope of the utility model.

As shown in fig. 1-13: a heat energy recovery system applied to a food processing workshop is particularly used for recovering heat energy in the processing process of instant noodles and comprises a tunnel type fryer 1 and a tunnel type steam box 2, wherein a first recovery cover 10 is communicated above the tunnel type fryer 1, flow balance boxes 3 are respectively arranged at inlet and outlet positions at two ends of the tunnel type fryer 1 and the tunnel type steam box 2, a lower seal plate 11 is correspondingly arranged below the flow balance boxes 3, the lower seal plate 11 is correspondingly arranged below a mesh belt track for transmission, and mixed steam recovery covers 21 are respectively arranged at the outer sides of the flow balance boxes 3 at two ends of the tunnel type steam box 2;

the flow balance boxes 3 at the two ends of the tunnel type steam box 2 can effectively prevent steam in the steam box from being discharged outwards, the discharged steam is recovered, meanwhile, air is not allowed to enter a steam recovery system when the discharged steam is recovered, and a small amount of overflowed steam is recovered through the mixed steam recovery cover 21.

The effect of flow balance box 3 at tunnel type fryer 1 both ends is retrieved the oil smoke vapor of output when frying food to the fryer, prevents oil smoke vapor inflow workshop and externally discharges, prevents outside air admission fryer, and the little oil smoke to overflowing is discharged after third high pressure positive blower carries to the clarifier.

The oil smoke steam recovered by the first recovery cover 10 is communicated to the heat exchanger system 6 through the spray tower oil smoke purification system 5 after passing through the first high-pressure air feeder, and the steam recovered by the flow balance boxes 3 at the two ends of the tunnel type steam box 2 is directly communicated to the heat exchanger system after passing through the second high-pressure air feeder and assists in heat energy recovery through the heat exchanger system.

According to one embodiment of the present invention, as shown in figures 3-7,

the flow balance box 3 comprises a box body 31, sealing baffles 32 capable of swinging left and right are arranged on the front side and the rear side of the bottom end of the box body 31, a spring return assembly 33 is arranged on one side of the top end of each sealing baffle 32, and a sealing assembly 34 is arranged on the top end of each sealing baffle 32;

a flow regulating valve 35 is arranged at the outlet of the top end of the box body 31, and a condensate water recovery tank 36 with an L-shaped section is arranged on the inner wall of the box body 31.

The top end of the sealing baffle 32 is provided with a baffle shaft 321 which is rotatably supported in the box 31, wherein a U-shaped groove for supporting the end of the baffle shaft 321 is formed in the box 31, the sealing assembly 34 comprises a sliding block seat 341, the sliding block seat 341 comprises a sliding groove 342 facing one side of the baffle shaft 321, a sliding block 343 is arranged in the sliding groove 342, the top end of the sliding block 343 is fixedly connected with a pressure spring 344, the top end of the pressure spring 344 is fixedly connected with the top end of the sliding groove 342, and the bottom end of the sliding block 343 is a concave arc surface and the concave arc surface is tightly attached to the baffle shaft 321.

The spring return component 33 includes a spring shaft seat 331 fixed in the box 31, a return spring 332 is sleeved on the spring shaft seat 331, a spring positioning shaft 333 is arranged on one side of the spring shaft seat 331 close to the baffle shaft 321, a rocker arm 322 pointing to the spring shaft seat 331 is arranged on one side of the baffle shaft 321, a rocker arm shaft 323 is arranged on one side of the rocker arm 322, and two free straight sections of the return spring 332 are respectively arranged at the upper side and the lower side of the spring positioning shaft 333 and the upper side and the lower side of the rocker arm shaft 323.

Realize automatic re-setting after making seal baffle 32 swing through spring return assembly 33, avoid individual food arch to cause the card chain to block the phenomenon, when the material of concrete transport was protruding, the in-process of transportation can drive seal baffle 32 to defeated material direction swing, at this moment, open between two free ends that straighten of reset spring 332, bellied material is carried the back of passing, because reset spring 332's torsion effect for seal baffle 32 is vertical to be reset.

The seal assembly 34 ensures a sealing engagement with the flapper shaft 321.

In another embodiment of the present invention, as shown in figure 5,

wherein, an adjusting component for driving the sealing baffle 32 to move up and down is arranged above the slider seat 341 at one side of the flow balancing box 3 at the inlet and outlet at the two ends of the tunnel type fryer 1.

Wherein, the regulating part is including locating the regulating box 37 of 3 both sides of flow balance box, be equipped with engaged worm wheel 371, worm 372 in the regulating box 37, the one end of worm 372 stretches out the regulating box 37 and just stretches out and serve and be equipped with adjustment handle on the end, on the pivot in regulating box 37 was located to worm wheel 371, be equipped with gear 373 in this pivot, the top of slider seat 341 is equipped with the slide 374 that is fixed in on flow balance box 3, and the cross-section of slide 374 is the U type, be equipped with in the slide 374 with gear 373 meshing's rack 375, the bottom of rack 375 links firmly with the slider seat 341 that corresponds.

When the seal baffle 32 needs to be adjusted, the rotation adjusting handle is adjusted, and in the process of the rotation adjusting handle, the worm 372 is rotated, the worm wheel 317 is driven to rotate, the worm wheel 371 rotates, the gear 373 rotates, and the gear 373 rotates to drive the rack 375 to move up and down.

The slider seat corresponding to the immovable seal baffle 32 is fixed in the box 31 by a connecting piece.

In another embodiment of the present invention, as shown in figures 8-10,

the spray tower lampblack purification system 5 comprises a spray tower 51, a communicated filter tower 52 is arranged on one side of the bottom end of the spray tower 51, and an oil-water separation tank 53 communicated with the spray tower 51 is arranged at the bottom end of the spray tower 51;

the oil-water separation tank 53 is communicated with a spray pipe in the spray tower 51 through a spray pump 54, and the bottom end of the filter tower 52 is communicated with the oil-water separation tank 53 through a pipeline.

The spray tower 51 is internally provided with baffle plates 511 which are vertically distributed in a staggered manner at intervals, and spray headers 513 which are communicated with the spray pipes 512 are arranged above the baffle plates 511;

a wire mesh demister 521 is arranged in the filter tower 52, a baffle plate demister 522 is arranged below the wire mesh demister 521 at a spacing, and a steam outlet is formed in the top end of the filter tower 52.

The oil-water separation tank 53 is internally provided with an upper baffle plate 531 and a lower baffle plate 532, the upper baffle plate 531 and the lower baffle plate 532 are distributed in a vertically staggered manner, the top end in the oil-water separation tank 53 is provided with an overflow plate 534, the overflow plate 534 is provided with a sewage discharge outlet 5341, one side of the oil-water separation tank 53 is provided with an oil storage tank 533, one side of the oil storage tank 533 is provided with an oil discharge outlet, the bottom end of the oil storage tank is provided with an oil pool sewage discharge outlet, and one side of the oil-water separation tank 53, which is far away from a water tank formed by one end of the spray tower 51, is provided with a water replenishing pump connector 5301 and a spray pump connector 5302.

The oil smoke recovered by the first recovery cover 10 communicated with the upper part of the tunnel type fryer 1 enters the spray tower 51 and then passes through the spray header 513 by hot water to spray the oil smoke water vapor, the oil smoke water vapor and the spray water are deflected by the baffle plate 511, the spray water is sprayed into the oil smoke water vapor to absorb heat and absorb oil molecules in the oil smoke water vapor, the oil molecules in the oil smoke water vapor are absorbed into the water, the oil smoke water vapor generates collision friction with the baffle plate 511 in the deflection process, the oil molecules in the oil smoke water vapor are adsorbed on the baffle plate 511, the baffle plate 511 flushes the adsorbed oil into the water under the flushing of the spray water, the oil smoke water vapor continuously entering the oil smoke purifier rises to the evaporation temperature after the combination temperature of the oil smoke water vapor and the water rises to the evaporation temperature to generate new water vapor again, the new vapor enters the evaporation chamber and then passes through the baffle plate demister 522 and the mesh demister 521 to perform steam-water separation, the separated saturated steam is supplied for other uses after being subjected to MVR mechanical steam recompression to increase the pressure and the enthalpy.

Spray water enters the oil-water separation tank 53 under the condition of self weight, oil-water separation is carried out after the spray water enters the oil-water separation tank 53, oil with low density floats on the water surface, water is supplied to the water stably for a certain height through the lower baffle plate 532, circulating water flows through the lower part of the upper baffle plate 531 and close to the bottom of the tank body, the oil floating on the water surface is blocked by the upper baffle plate 531, the oil floats in the water tank to be more and less, when the oil level rises to the height of the overflow plate 534, the oil flows through the drain outlet 5341 on the overflow plate 534 and enters the oil storage tank 533, multi-stage separation is adopted in the circulating mode, the separated clean water is supplied to the spray header 513 for recycling through the circulating pump, a liquid level transmitter connected with the PLC is arranged on the side surface of the water tank, the liquid level transmitter feeds a liquid level signal back to the PLC, and the PLC controls the water replenishing pump to replenish water to the water tank according to the feedback signal;

be equipped with the oil level changer in the oil storage tank 533, the oil level changer feeds back the PLC with the oil level signal, and PLC is according to the oil extraction pump of feedback signal control and oil bath oil drain port intercommunication, and the oil extraction pump carries oil to the oil storage tank. The bottom of each stage of oil-water separation tank is provided with a drain valve for periodically draining sewage.

In another embodiment of the present invention, as shown in figure 11,

the heat exchanger system 6 comprises a first steam-water separator 601, steam separated by the first steam-water separator 601 enters a heat exchanger 603 after being pressurized and heated by a first MVR602, and enters a second steam-water separator 604 through a throttle valve 605 after passing through the heat exchanger 603, namely, the throttle valve 605 is arranged on a pipeline communicating the heat exchanger 603 and the second steam-water separator 604.

A drain pump is arranged on the condensed water discharge pipeline of the second steam-water separator 604, and a branch pipeline is arranged on the condensed water discharge pipeline and is communicated with the spray pipe 512 of the spray tower 51 through a purifier water supply pump 6041.

In another embodiment of the present invention, as shown in figure 11,

the heat exchanger system 6 is used for supplying heat to a noodle drying room 8 through a heat circulation pipeline system 7. The heat that tunnel type fryer 1, tunnel type steam ager 2 retrieved is used for giving 8 heat supplies in vermicelli stoving room, improves the heat utilization rate of whole production line system, reduction in production cost.

The heat circulation pipeline system 7 comprises a water outlet pipeline 71 and a water return pipeline 72, a finned tube radiator 81 is arranged in the fine dried noodle drying room 8, and a circulation pipeline is formed between the heat exchanger 603 and the finned tube radiator 81 through the water outlet pipeline 71 and the water return pipeline 72.

The water outlet pipeline 71 is provided with a steam-water mixing heater 711, the steam-water mixing heater 711 is externally communicated with a raw steam generating system 7110, the raw steam generating system 7110 can supplement raw steam into the steam-water mixing heater 711, a pipeline through which the steam-water mixing heater 711 and the raw steam generating system 7110 are communicated is provided with an electric regulating valve, one side of the electric regulating valve, which is close to the steam-water mixing heater 711, is provided with a check valve, the other side of the electric regulating valve is provided with an overhaul valve, the water return pipeline is provided with a water storage tank 721, a circulating pump group 722 is arranged between the water storage tank 721 and the heat exchanger 603, and the water storage tank 721 is externally communicated with a softened water tank through a water supplementing pump 723.

The circulating pump group comprises a main circulating pump and a standby circulating pump, and the pipelines of the circulating pump and the standby circulating pump are provided with an overhaul valve and a check valve.

The fine dried noodle drying room 8 is internally provided with a plurality of groups of finned tube radiators 81, water outlet pipe branches of the finned tube radiators 81 are connected in parallel and then communicated to the collecting tank 82, the collecting tank 82 is communicated with the water storage tank 721, water return pipe branches of the finned tube radiators 81 are connected in parallel and then communicated to the water distribution tank 83, the water distribution tank 83 is communicated with the steam-water mixed heater 711, and each water outlet pipe branch and each water return pipe branch are respectively provided with a branch valve.

Exhaust valves are arranged on the collecting tank 82, the water distribution tank 83, the steam-water mixing heater 711 and the water storage tank 721.

The recovered and recovered steam is subjected to mechanical steam recompression by the first MVR602 to increase the pressure and enthalpy, and then is led to the heat exchanger 603 to heat and heat the circulating water of the multiple groups of finned tube radiators 81.

In another embodiment of the present invention, as shown in figures 12 and 13,

the heat exchanger system 6 achieves heat energy recovery by communicating with the steam generation system 9.

The steam generation system 9 comprises a steam-liquid separator evaporator 91 communicated with a water outlet end of the heat exchanger 603, the steam-liquid separator evaporator 91 is communicated with a liquid storage tank 92 on one side of the steam-liquid separator, a water outlet at the bottom end of the liquid storage tank 92 is communicated with a water inlet of the heat exchanger 603 through a second circulating pump 93, a steam outlet at the top end of the steam-liquid separator evaporator 91 is communicated with a secondary steam-water separator 94, and a steam outlet of the secondary steam-water separator 94 is communicated to a second MVR95 or TVR 97.

The inside wall of the vapor-liquid separator evaporator 91 is provided with a swirl groove 911, and one end of the vapor-liquid separator evaporator 91 close to the top air outlet is provided with a vapor baffle plate 912.

The steam is discharged after the steam recompression technology of a second MVR95 or TVR97, a pipeline for discharging the steam is externally communicated with raw steam through a branch, and a raw steam pressure gauge, a steam supply valve and an electric regulating valve are arranged on the branch.

Wherein, one side of the liquid storage tank 92 is provided with a water supply detection tank 96, and a pipeline communicated between the liquid storage tank 92 and the water supply detection tank 96 is provided with an overhaul valve, a water replenishing pump, an electric regulating valve and a check valve.

Wherein, the pipeline of the water outlet end of the heat exchanger 603 communicated with the vapor-liquid separator evaporator 91 is communicated with the high-temperature condensed water inlet through a branch pipe.

A branch pipeline is arranged on the pipeline through which the liquid storage tank 92 is communicated with the heat exchanger 603, a condensed water discharge pump 98 is arranged on the branch pipeline, maintenance valves are arranged on two sides of the condensed water discharge pump 98, and a check valve is arranged between the condensed water discharge pump 98 and a condensed water discharge end.

A throttle valve, a pressure gauge and a pressure transmitter are installed at a steam output port of the heat exchanger 603, the flow rate of steam in the heat exchanger 603 is adjusted by adjusting the opening degree of the throttle valve, the steam pressure and the temperature in the heat exchanger 603 are improved, condensed water generated after the heat of the steam in the heat exchanger 603 is released is discharged through the throttle valve and enters the second steam-water separator 604, a steam-water mixture entering the second steam-water separator 604 is subjected to steam-water separation, part of non-condensable gas is discharged through a chimney, and hot condensed water is supplied to the spray tower 51 for use. The second steam-water separator 604 is provided with a liquid level transmitter, the liquid level transmitter inverts a liquid level signal to the PLC, and the PLC controls the drainage pump to discharge redundant water in the second steam-water separator 604 for other uses according to a feedback signal.

Heat exchanger 603 side circulating water adopts lower entering upper-outlet countercurrent heat transfer evaporation, draw close both ends difference in temperature greatly, the circulating water that is heated produces the negative pressure evaporation under second MVR95 or TVR97 suction, in time take out the heat in the heat exchanger 603, the high temperature water that heat exchanger 603 outlet pipe mouth is heated gets into vapour and liquid separator evaporimeter 91 and carries out the whirl and produce circular waterfall water film and increase the evaporation area, the water film from the top down flow under the dead weight effect of water evaporates the heat in the aquatic under the negative pressure, the heat ability flash evaporation in the aquatic, improve evaporation efficiency. The two technologies of plate evaporation and falling film evaporation are adopted at the same time, so that the evaporation speed and the heat exchange efficiency are improved. In order to improve the evaporation area of the evaporation chamber and reduce the height of the evaporation chamber and simultaneously prevent the heat exchanger from being lack of water when the heat exchanger is stopped, the vapor-liquid separator evaporator 91 and the liquid storage tank 92 are separated, the water quantity entering the vapor-liquid separator evaporator 91 is subtracted from the evaporation quantity under normal conditions to obtain the water yield, the vapor-liquid separator evaporator 91 does not store water, the evaporated hot water flows into the tank bottom and enters the liquid storage tank 92 under the suction force of the second circulating pump 93, the water level of the liquid storage tank 92 is level with the water level of the outlet of the heat exchanger 603, enough water quantity in the heat exchanger 603 can be ensured through self-flow when the heat exchanger 603 is stopped, the heat exchanger 603 is prevented from being burnt dry, a certain height exists between the installation of the liquid storage tank 92 and the ground, and the second circulating pump 93 is installed at the lowest part of the liquid storage tank 92 to form a fall to prevent the second circulating pump 93 from being subjected to cavitation.

The hot water is sent to the heat exchanger 603 again through the second circulating pump 93 to form forced circulation.

The other circulation mode is self-circulation, and the water is supplemented by heat rising evaporation and self-flowing below. The vapor-liquid separator evaporator 91 and the liquid storage tank 92 are both provided with liquid level transmitters connected with the PLC, the vapor-liquid separator evaporator 91 is divided into two parts, one part is circulating water heated by the heat exchanger 603, the other part is high-temperature condensate water generated by other heat exchangers 603 in a workshop, the high-temperature condensate water enters the vapor-liquid separator evaporator 91 for negative pressure evaporation, and heat in the condensate water is extracted. The liquid storage pot 92 is connected with the second circulating pump 93 respectively, the comdenstion water discharge pump 98, the moisturizing pump, electrical control valve, under the condition that no comdenstion water got into, the operation of second circulating pump 93 keeps vapour and liquid separator evaporimeter 91, liquid storage pot 92 water level balance, the water consumption of evaporation passes through liquid storage pot 92 liquid level transmitter monitoring and feeds back signal to PLC, PLC carries out the moisturizing according to feedback signal control electrical control valve, the moisturizing motorised valve is connected with booster pump, water supply detection jar 96 has liquid level transmitter, pressure transmitter, discharge valve, the feed water valve is constituteed. The booster pump operation is according to water storage tank liquid level transmitter, water storage tank pressure transmitter, supply tank liquid level transmitter and supply water detection jar pressure transmitter with signal feedback to PLC, PLC is according to both signal comparison, when liquid storage tank 92 needs the moisturizing, the booster pump starts the operation when water supply pressure is less than liquid storage tank 92 pressure, stops behind the settlement water level, guarantees that liquid storage tank 92's water supply is stable, in time alarm when the problem appears in the water supply, prevents the booster pump because of the trouble that the not enough causes of water supply. When high-temperature condensation enters the vapor-liquid separator evaporator 91 and is evaporated, condensed water is generated and exists in the evaporation chamber, a signal is fed back to the PLC by the liquid level transmitter of the vapor-liquid separator evaporator 91, the PLC controls the condensed water discharge pump 98 according to the feedback signal, and the water level of the vapor-liquid separator evaporator 91 is reduced. An electric valve and a check valve are installed at the outlet of the condensed water discharge pump 98, and the electric valve is closed when water is not discharged, thereby preventing the water level from being abnormal due to pressure fluctuation in the vapor-liquid separator evaporator 91.

The upper part of the vapor-liquid separator evaporator 91 is provided with a vapor baffle 912, vapor enters a secondary vapor-water separator 94 after passing through a demister of the vapor baffle 912, enters a second MVR95 or a TVR97 after being separated from the vapor, and is recompressed and pressurized to improve enthalpy so as to meet the vapor requirement of production process and supply the enthalpy to a steam box for use.

The pipeline for discharging the steam is externally communicated with raw steam through a branch pipeline, a raw steam manual valve, a raw steam electric regulating valve, a pressure gauge, a pressure transmitter and a safety valve are arranged on the branch pipeline, the raw steam is only used for initial start and pressure stabilization supplement of the system, when the equipment is started, the second MVR95 or TVR97 is started first, and when the maximum operation mode is entered and the flow rate and the pressure of the steam for production cannot be met, the output steam pressure feeds back a signal to the PLC, the PLC controls the generated steam to supplement the electric regulating valve according to the feedback signal to ensure that the output pressure is stabilized at a set pressure, and when the heat generated after normal production is higher and higher, the steam generated by the steam-liquid separator evaporator 91 is more and more, the PLC controls the raw steam supply electric regulating valve to reduce the supply steam according to the feedback signal, and the steam generated by recovering heat replaces most of the raw steam, so that the consumption of the raw steam is greatly reduced, and the purpose of energy conservation is achieved.

The working principle of the utility model is as follows: the oil smoke steam recovered by the first recovery cover 10 passes through the spray tower oil smoke purification system 5, is filtered to oil stain, and then is led to the heat exchanger system 6; the steam that the flow balance box 3 at tunnel type steam ager 2 both ends was retrieved directly communicates to heat exchanger system 6, the steam after retrieving and recovery processing is through behind first MVR602 mechanical vapor recompression raising pressure and enthalpy, accesss to the circulating water heat transfer heating that heat exchanger 603 gave multiunit finned tube radiator 81, tunnel type fryer 1, the heat that tunnel type steam ager 2 was retrieved is used for giving 8 heat supplies in vermicelli stoving room, improve whole production line system's heat utilization rate, reduction in production cost.

Or the recovered heat is utilized to generate steam through the steam generation system 9, thereby greatly reducing the consumption of the generated steam and achieving the aim of saving energy.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. Be applied to heat recovery system between food processing vehicle, including tunnel fryer (1), tunnel type steam ager (2), the top intercommunication of tunnel fryer (1) has first recovery cover (10), its characterized in that: flow balance boxes (3) are respectively arranged at the inlet and outlet positions at two ends of the tunnel type fryer (1) and the tunnel type steam box (2), lower closing plates (11) are correspondingly arranged below the flow balance boxes (3), and mixed steam recovery covers (21) are respectively arranged on the outer sides of the flow balance boxes (3) at two ends of the tunnel type steam box (2);

the oil smoke steam recovered by the first recovery cover (10) is communicated to the heat exchanger system (6) through the spray tower oil smoke purification system (5) after passing through the first high-pressure air feeder, and the steam recovered by the flow balance boxes (3) at the two ends of the tunnel type steam box (2) is directly communicated to the heat exchanger system (6) after passing through the second high-pressure air feeder and assists in heat energy recovery through the heat exchanger system (6).

2. A heat energy recovery system for use in a food processing plant according to claim 1, wherein: the flow balance box (3) comprises a box body (31), sealing baffle plates (32) capable of swinging left and right are arranged on the front side and the rear side of the bottom end of the box body (31), a spring return assembly (33) is arranged on one side of the top end of each sealing baffle plate (32), and a sealing assembly (34) is arranged on the top end of each sealing baffle plate (32);

the top exit of box (31) is equipped with flow control valve (35), be equipped with condensate recovery groove (36) that the cross-section is the L type on the inner wall of box (31).

3. A heat energy recovery system for use in a food processing plant according to claim 1, wherein: the spray tower lampblack purification system (5) comprises a spray tower (51), a communicated filter tower (52) is arranged on one side of the bottom end of the spray tower (51), and an oil-water separation box (53) communicated with the spray tower (51) is arranged at the bottom end of the spray tower (51);

the oil-water separation tank (53) is communicated with a spray pipe in a spray tower (51) through a spray pump (54), and the bottom end of the filter tower (52) is communicated with the oil-water separation tank (53) through a pipeline;

baffle plates (511) which are vertically distributed in a staggered mode at intervals are arranged in the spray tower (51), and spray headers (513) which are communicated with the spray pipes (512) are arranged above the baffle plates (511);

a wire mesh demister (521) is arranged in the filter tower (52), a baffle plate demister (522) is arranged below the wire mesh demister (521) at intervals, and the top end of the filter tower (52) is a steam outlet.

4. A heat energy recovery system for use in a food processing plant according to claim 1, wherein: the heat exchanger system (6) comprises a first steam-water separator (601), steam separated by the first steam-water separator (601) enters a heat exchanger (603) after being pressurized and heated by a first MVR (602), and enters a second steam-water separator (604) through a throttle valve (605) after passing through the heat exchanger (603).

5. A heat energy recovery system for use in a food processing plant according to any one of claims 1 to 4 wherein: the heat exchanger system (6) is used for supplying heat to the fine dried noodle drying room (8) through the heat circulation pipeline system (7).

6. A heat energy recovery system for use in a food processing plant according to claim 5 wherein: the heat circulation pipeline system (7) comprises a water outlet pipeline (71) and a water return pipeline (72), a finned tube radiator (81) is arranged in the fine dried noodle drying room (8), and a circulation pipeline is formed between the heat exchanger (603) and the finned tube radiator (81) through the water outlet pipeline (71) and the water return pipeline (72).

7. A heat energy recovery system for use in a food processing plant according to claim 6 wherein: the water outlet pipeline (71) is provided with a steam-water mixed heater (711), the steam-water mixed heater (711) is externally communicated with a raw steam generation system (7110), a pipeline communicated with the raw steam generation system (7110) is provided with an electric regulating valve, one side of the electric regulating valve close to the steam-water mixed heater (711) is provided with a check valve, the other side of the electric regulating valve is provided with an inspection valve, the water return pipeline is provided with a water storage tank (721), a circulating pump group (722) is arranged between the water storage tank (721) and the heat exchanger (603), and the water storage tank (721) is externally communicated with a softened water tank through a water replenishing pump (723).

8. A heat energy recovery system for use in a food processing plant according to any one of claims 1 to 4 wherein: the heat exchanger system (6) is communicated with the steam generation system (9) to realize heat energy recovery.

9. A heat energy recovery system for use in a food processing plant according to claim 8, wherein: the steam generation system (9) comprises a steam-liquid separator evaporator (91) communicated with a water outlet end of the heat exchanger (603), the steam-liquid separator evaporator (91) is communicated with a liquid storage tank (92) on one side of the steam-liquid separator, a water outlet at the bottom end of the liquid storage tank (92) is communicated with a water inlet of the heat exchanger (603) through a second circulating pump (93), a steam outlet at the top end of the steam-liquid separator evaporator (91) is communicated with a secondary steam-water separator (94), and a steam outlet of the secondary steam-water separator (94) is communicated to a second MVR (95) or TVR (97);

a branch pipeline is arranged on a pipeline of the liquid storage tank (92) communicated with the heat exchanger (603), a condensed water discharge pump (98) is arranged on the branch pipeline, maintenance valves are arranged on two sides of the condensed water discharge pump (98), and a check valve is arranged between the condensed water discharge pump (98) and a condensed water discharge end;

one side of the liquid storage tank (92) is provided with a water supply detection tank (96), and a pipeline communicated between the liquid storage tank (92) and the water supply detection tank (96) is provided with an overhaul valve, a water replenishing pump, an adjusting valve and a check valve.

10. A heat energy recovery system for use in a food processing plant according to claim 9, wherein: and a pipeline for communicating the water outlet end of the heat exchanger (603) with the steam-liquid separator evaporator (91) is communicated with a high-temperature condensed water inlet through a branch pipe.