Steam waste heat recycling device and method

Abstract

The invention relates to the technical field of energy conservation of food processing equipment, in particular to a steam waste heat recycling device which comprises a fixed support, a heating bin, a seafood steam cabinet, a steam generator, a steam-water separator and a heat exchanger. The heating bin is installed on the right side of the top face of the fixed support and internally provided with a fire grate used for heating steam, the steam flows through the fire grate heating area, and the seafood steaming cabinet is installed on the top of the heating bin. According to the steam waste heat recycling device, waste heat steam is separated out through the steam-water separator, waste heat of the steam is absorbed through the heat exchanger, and then cold water in the cold water tank is conveyed to the heat exchanger to absorb heat in cooperation with the circulating pump; and finally generated hot water is stored in the hot water storage tank, so that energy loss caused by direct emptying of waste heat-containing steam is avoided, waste heat is converted into reusable hot water for food material pretreatment, cleaning and the like, the steam energy utilization rate is remarkably increased, and the energy-saving requirements of catering and food processing industries are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processing equipment energy saving, in particular to a steam waste heat recycling device and method. BACKGROUND

[0002] With the scale development of the catering industry and the food processing industry, the seafood steaming cabinet has become the core heating equipment of hotels, seafood restaurants and food processing plants because it can maintain the fresh and tender taste of seafood. This type of equipment uses steam as the main heat source, and its working principle is to generate high-temperature steam through a steam generator, which is then delivered to the inside of the steaming cabinet through a gas delivery pipe to heat the food by using the latent heat of the steam. However, the existing equipment has obvious defects in steam utilization: 1. Serious waste of steam waste heat: The steam of the traditional seafood steaming cabinet is of the "single flow type", and the steam containing residual heat after heat exchange with the food is directly emptied without being recycled, resulting in large energy loss and not meeting the energy saving needs.

[0003] 2. Insufficient performance of existing separators: Although some seafood steaming cabinets are equipped with simple steam-water separators, there are still two major problems: first, the sealing structure is simple (mostly single rubber plug sealing), and when impurities adhere to the inner wall of the separator drain pipe, sealing failure easily occurs, causing steam to escape from the gap (causing secondary heat loss) or condensate leakage, resulting in energy waste and further energy waste.

[0004] In summary, the current seafood steaming cabinet urgently needs a solution that can achieve steam circulation heating and self-adaptive sealing recovery to solve the problem of energy waste. SUMMARY

[0005] The purpose of the present application is to provide a steam waste heat recycling device and method to solve the problem of steam waste heat and sealing failure when impurities adhere to the inner wall of the separator drain pipe. To achieve the above purpose, the present application provides the following technical solutions: The steam waste heat recycling device comprises a fixed support, a heating bin, a seafood steaming cabinet, a steam generator, a steam-water separator and a heat exchanger. The heating bin is installed on the right side of the top surface of the fixed support and is internally provided with a fire grate for heating steam. The seafood steaming cabinet is installed on the top of the heating bin, and its steam inlet is connected to the steam generator through a first gas delivery pipe, and the first gas delivery pipe passes through the inside of the heating bin to provide a heating area for the steam to flow through the fire grate. The steam generator is installed in the middle of the top surface of the fixed support. The steam-water separator is detachably mounted on the back of the seafood steaming cabinet, and is used for separating steam and condensed water; The steam outlet of the steam-water separator is connected with a third gas pipe, and a heat exchanger is mounted on the outer wall of the third gas pipe. The heat exchanger is mounted on the left side of the top surface of the fixed support. The water inlet of the heat exchanger is connected with the water outlet pipe of the circulating pump. The circulating pump is fixed on the top surface of the fixed support, and the water inlet pipe of the circulating pump is connected with a cold water tank. The cold water tank is fixed on the left side of the fixed support. The water outlet of the heat exchanger is connected with a hot water storage tank through a water pipe. The steam-water separator is detachably mounted on the back of the seafood steaming cabinet, and is used for separating steam and condensed water;

[0006] Preferably, the first gas pipe, the second gas pipe, the third gas pipe and the liquid pipe are made of stainless steel, which can resist corrosion of high-temperature steam and condensed water.

[0007] Preferably, the inner wall of the steam-water separator is provided with a damping hinged float ball rod on the left side. A float ball is arranged at the right end of the float ball rod and rises and falls with the liquid level of the condensed water. A hinged rod is arranged on the rod for transmitting the deflection force of the float ball rod. The lower end of the hinged rod is hinged to a first pressing column. The outer side of the first pressing column is sleeved with a sealing pressing sleeve. An end sealing sleeve is arranged on the outer wall of the sealing pressing sleeve and abuts against the upper end of the steam-water separator drain pipe, so as to realize initial sealing of the drain pipe. The bottom end of the first pressing column is connected with a limiting sleeve through a T-shaped pull rod. The lower end of the limiting sleeve is connected with a sealing plug inserted in the sealing pressing sleeve, so as to assist in sealing. The lower end of the sealing pressing sleeve is connected with a circular table inserted in the steam-water separator drain pipe through a connecting rod. A wear-resistant soft rubber sleeve is arranged on the edge of the top surface of the circular table, and the upper side of the wear-resistant soft rubber sleeve is adhered to the bottom surface of the sealing pressing sleeve. The wear-resistant soft rubber sleeve is used for expansion under pressure to realize auxiliary sealing of the drain pipe. Preferably, the lower end of the side surface of the sealing plug is hinged to a first spring telescopic rod. The end of the first spring telescopic rod away from the sealing plug is hinged to the lower end of the sealing pressing sleeve. The first spring telescopic rod is used for providing elastic assistance for downward movement of the sealing plug. A sealing rubber sleeve is arranged on the side surface of the sealing plug for enhancing the sealing effect.

[0008] Preferably, the end sealing sleeve is made of wear-resistant elastic rubber material, which is used for adapting to the small impurity gap on the end surface of the drain pipe. A sealing sleeve is adhered between the top surface of the sealing pressing sleeve and the outer side of the first pressing column, so as to seal the gap between the first pressing column and the sealing pressing sleeve.

[0009] Preferably, a flow guide plate is arranged on the right side of the bottom surface of the inner wall of the steam-water separator. The flow guide plate is used for guiding the condensed water to flow to the left side of the inner wall of the steam-water separator. An inclined filter screen is arranged on the left side of the flow guide plate. The filter screen is used for filtering impurities in the condensed water and capturing water droplets in the steam.

[0010] Preferably, the top surface of the flow guide plate is an inclined surface with the right side being higher than the left side. The left end is chamfered, so as to avoid stagnation of the condensed water on the left end of the flow guide plate.

[0011] Preferably, two L-shaped baffles are arranged on the left side of the inner wall of the steam-water separator, and are arranged on the front and rear sides of the floating ball rod respectively, and the end of the L-shaped baffle away from the steam-water separator is located above the sealing pressure sleeve, for limiting the upward movement height of the sealing pressure sleeve, and assisting the first spring telescopic rod to reset.

[0012] Preferably, the second spring telescopic rod is arranged on the opposite side of the two L-shaped baffles, and the end of the second spring telescopic rod is hemispherical and located on the upper side of the floating ball rod, for providing a buffer resistance for the deflection of the floating ball rod; the chamfered rod is arranged below the second spring telescopic rod on the side of the floating ball rod, for stably extruding the end of the second spring telescopic rod.

[0013] The use method of the steam waste heat recycling device comprises the following steps: S1: the steam generated by the steam generator is transported through the first gas conveying pipe, heats the steam in the fire bar heating pipe in the heating bin, and then is sent into the seafood steaming cabinet; S2: after the high-temperature steam heats the food in the cabinet, the food is sent into the steam-water separator through the second gas conveying pipe from the exhaust port; S3: the steam diffuses and slows down in the steam-water separator, the condensed water is guided to the left side through the guide plate, the impurities are filtered through the filter screen and the water droplets are caught; after purification, the waste heat steam passes through the heat exchanger through the third gas conveying pipe to exchange heat with the steam in the third gas conveying pipe, the circulating pump sends the cold water in the cold water tank into the heat exchanger to absorb heat, and the hot water is stored in the hot water storage tank; S4: when the liquid level of the condensed water rises, the floating ball drives the floating ball rod to deflect, overcomes the resistance of the second spring telescopic rod, and then the sealing pressure sleeve moves upward to make the drain pipe conductive, the condensed water is sent into the recycling tank through the liquid conveying pipe; when the liquid level decreases, the floating ball drives the components to reset, and the end sealing sleeve is sealed; when the impurities cause poor sealing, the sealing plug moves downward to extrude the expansion of the wear-resistant soft rubber sleeve to assist sealing, and the L-shaped baffle assists resetting.

[0014] Compared with the prior art, the beneficial effects of the present application are: The present application: high-efficiency recovery of steam waste heat, greatly reduces energy loss. In view of the problem of the existing seafood steaming cabinet that "steam is exhausted after flowing through once, and waste heat is seriously wasted", the device separates the waste heat steam through the steam-water separator, absorbs the waste heat of the steam through the heat exchanger, then cooperates with the circulating pump to transport the cold water in the cold water tank to the heat exchanger to absorb heat, and finally the generated hot water is stored in the hot water storage tank - both avoiding the energy loss of directly exhausting the steam containing waste heat, and converting the waste heat into reusable hot water; it can clean seafood (such as shellfish, shrimp), thaw frozen food (hot water thawing speed is fast and can avoid nutrient loss, better than cold water or normal temperature thawing), soak coarse grains / dry goods, etc., without the need for additional start-up of electric heating or gas boiler to heat water. Clean the inner wall of the seafood steaming cabinet, wipe the gas pipeline, clean the operation table, etc. - hot water cleaning capacity is better than cold water (can reduce the amount of cleaning agent, and can quickly remove oil stains and food residues), while avoiding the energy consumption of "additional drying after cleaning with cold water" (such as for food preprocessing, cleaning, etc.), significantly improving the steam energy utilization rate, and meeting the energy-saving needs of the catering and food processing industries.

[0015] The present application: double self-adaptive sealing, solves the problem of separator sealing failure. In view of the defect of the traditional separator that "single sealing structure is easy to fail due to impurities, leading to steam escape or condensate leakage", the device is designed with "end sealing sleeve + wear-resistant soft rubber sleeve" double sealing structure at the steam-water separator drain pipe: under normal circumstances, the initial sealing is realized through the end sealing sleeve, when the impurities adhered to the top surface of the drain pipe cause incomplete sealing, the sealing plug moves downward to extrude the air inside the rubber sleeve, making it expand to fit the inner wall of the drain pipe to form auxiliary sealing, effectively blocking the steam escape path, avoiding secondary heat loss, and preventing condensate leakage from polluting the equipment environment.

[0016] The present application: precise liquid level triggering and buffer reset, improves the reliability of condensate recovery. In view of the problem of the existing device that "condensate recovery triggering is slow and prone to liquid level being too high or sealing reset being not timely", the device is designed with the structure of the floating ball rod linking the second spring telescopic rod: when the liquid level rises, the chamfered rod extrudes the spring telescopic rod to form a buffer, ensuring that the buoyancy overcomes the resistance before the drain is opened, avoiding "false drainage when the liquid level does not reach the threshold"; when the liquid level decreases, the spring telescopic rod provides resistance to make the floating ball rod slowly move downward, driving the sealing assembly to reset smoothly, preventing "incomplete sealing caused by too fast sealing reset" or "steam leakage caused by too slow reset", realizing the precise cooperation of condensate recovery and sealing, and further guaranteeing the efficiency of waste heat recovery. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective structural schematic diagram of the present application; Figure 2 It is a perspective structural rear view of the present application; Figure 3 It is a partial perspective structural rear view of the present application; Figure 4 It is the sectional view of the three-dimensional structure of the steam-water separator of the present application; Figure 5 It is the three-dimensional structure schematic diagram of the floating ball rod and the articulated rod of the present application; Figure 6 It is the three-dimensional structure schematic diagram of the circular table and the end sealing sleeve of the present application; Figure 7 It is the sectional view of the three-dimensional structure of the sealing sleeve, the sealing sleeve and the end sealing sleeve of the present application; Figure 8 It is the sectional view of the three-dimensional structure of the sealing sleeve, the sealing sleeve, the limiting sleeve and the end sealing sleeve of the present application.

[0018] In the figure: 1, fixed support; 2, heating bin; 21, fire row; 3, seafood steaming cabinet; 31, first gas pipe; 32, second gas pipe; 33, steam-water separator; 34, third gas pipe; 35, heat exchanger; 36, circulating pump; 37, cold water tank; 38, hot water storage tank; 39, recovery tank; 310, liquid conveying pipe; 4, steam generator; 5, flow guide plate; 6, filter screen; 7, floating ball rod; 71, articulated rod; 72, first pressure column; 73, sealing sleeve; 74, sealing sleeve; 75, T-shaped pull rod; 76, limiting sleeve; 77, sealing plug; 78, first spring telescopic rod; 79, connecting rod; 710, circular table; 711, end sealing sleeve; 712, wear-resistant soft rubber sleeve; 713, L-shaped baffle; 714, second spring telescopic rod; 715, chamfered rod; 716, floating ball. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1 to 8 The present application provides a technical solution: steam waste heat recycling device, including fixed support 1, the right side of the top surface of fixed support 1 is provided with heating bin 2, fire row 21 is installed in heating bin 2, the top of heating bin 2 is provided with seafood steaming cabinet 3, the first gas pipe 31 is installed on the lower steam inlet of the right side of seafood steaming cabinet 3, a plurality of steaming drawers in seafood steaming cabinet 3 are communicated through steam flow holes, which ensures the flowability of steam, which is prior art, the end of first gas pipe 31 away from seafood steaming cabinet 3 extends left through the inside of heating bin 2 and is fixedly connected with steam generator 4, and steam generator 4 is installed in the middle of the top surface of fixed support 1.

[0021] The second gas conveying pipe 32 is installed on the exhaust port at the top of the back of the seafood steaming cabinet 3, and the lower end of the second gas conveying pipe 32 is fixedly connected with a steam-water separator 33 which is detachably installed on the back of the seafood steaming cabinet 3.

[0022] The steam outlet at the left end of the top surface of the steam-water separator 33 is connected with a third gas conveying pipe 34, the outer wall of the third gas conveying pipe 34 is installed with a heat exchanger 35, the heat exchanger 35 is installed on the left side of the top surface of the fixed support 1, the water inlet of the heat exchanger 35 is connected with the water outlet pipe of a circulating pump 36, the circulating pump 36 is fixed on the top surface of the fixed support 1, the water inlet pipe of the circulating pump 36 is connected with a cold water tank 37 which is fixed on the left side of the fixed support 1; The water outlet of the heat exchanger 35 is connected with a hot water storage tank 38 through a water pipe, and the hot water storage tank 38 is installed on the rear side of the fixed support 1. The heat exchanger 35 absorbs the heat of the steam in the third gas conveying pipe 34, generates hot water with a temperature of 40-60 degrees and sends it to the hot water storage tank 38, which is convenient for the user to use the hot water later. The hot water can be used for cleaning seafood (such as shellfish and shrimp), thawing frozen food (hot water thawing is faster and can avoid nutrient loss, which is better than cold water or room temperature thawing), soaking coarse grains / dry goods, etc. without the need to start an electric heating or gas boiler to heat water. Cleaning the inner wall of the seafood steaming cabinet, wiping the gas conveying pipeline, and cleaning the operation table - the hot water cleaning capacity is better than cold water (can reduce the amount of cleaning agent, and can quickly remove oil stains and food residues), and at the same time avoids the energy consumption of "additional drying after cleaning with cold water".

[0023] After the steam passes through the heat exchanger, the heat is absorbed by the cold water, and the exhaust gas temperature is reduced to below 40°C (close to room temperature), avoiding the heat pollution of direct discharge of high-temperature steam to the operating environment, and improving the comfort of employees; The bottom drain pipe of the steam-water separator 33 is connected with a liquid conveying pipe 310, one end of the liquid conveying pipe 310 is connected with a recovery tank 39 which is installed on the left side of the fixed support 1. The first gas conveying pipe 31, the second gas conveying pipe 32, the third gas conveying pipe 34 and the liquid conveying pipe 310 are all made of stainless steel.

[0024] In this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8As shown, the left side of the inner wall of the steam-water separator 33 is dampedly hinged with the float ball rod 7, the right end of the float ball rod 7 is provided with a float ball 716, the rod part of the float ball rod 7 is hingedly connected with a hinge rod 71, the lower end of the hinge rod 71 is hingedly connected with a first pressing column 72, the bottom of the side surface of the first pressing column 72 is sleeved with a sealing pressing sleeve 73, the top surface of the sealing pressing sleeve 73 and the outer side of the first pressing column 72 are adhesively connected with a sealing sleeve 74, the sealing property between the first pressing column 72 and the sealing pressing sleeve 73 is ensured through the sealing sleeve 74, the outer wall of the sealing pressing sleeve 73 is fixedly sleeved with an end sealing sleeve 711, the end sealing sleeve 711 is made of wear-resistant elastic rubber material, and the end sealing sleeve 711 abuts against the upper end of the drain pipe at the bottom of the steam-water separator 33.

[0025] In the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8 As shown, the bottom end of the first pressing column 72 is fixedly connected with a T-shaped pull rod 75, the outer side of the T-shaped pull rod 75 is sleeved with a limiting sleeve 76, the lower end of the limiting sleeve 76 is fixedly connected with a sealing plug 77, the sealing plug 77 is movably inserted into the lower side of the inner wall of the sealing pressing sleeve 73, the side surface of the sealing plug 77 is adhesively connected with a sealing rubber sleeve, and the sealing property between the sealing plug 77 and the sealing pressing sleeve 73 is further ensured; the side surface lower end of the sealing plug 77 is hingedly connected with a first spring telescopic rod 78, and the end of the first spring telescopic rod 78 away from the sealing plug 77 is hingedly connected to the lower end of the sealing pressing sleeve 73; The lower end of the sealing pressing sleeve 73 is fixedly connected with two connecting rods 79, the lower end of the connecting rod 79 is fixedly connected with a circular table 710, the circular table 710 is inserted into the drain pipe at the bottom of the steam-water separator 33, and when the first pressing column 72 moves to the highest point, the circular table 710 will not completely separate from the drain pipe at the bottom of the steam-water separator 33; The top surface edge of the circular table 710 is adhesively connected with a wear-resistant soft rubber sleeve 712, the upper side of the wear-resistant soft rubber sleeve 712 and the bottom surface of the sealing pressing sleeve 73 are adhesively connected to form a cavity, and the sealing plug 77 is lowered to extrude the gas inside the wear-resistant soft rubber sleeve 712, so that the wear-resistant soft rubber sleeve 712 is expanded and abuts against the drain pipe in the steam-water separator 33 to seal it.

[0026] In the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8As shown, the front and back of one end of the float ball rod 7 are provided with L-shaped baffles 713, and the L-shaped baffles 713 are installed on the left side of the inner wall of the steam-water separator 33, and the end of the L-shaped baffles 713 away from the steam-water separator 33 is located above the sealing pressure sleeve 73. The L-shaped baffles 713 limit the upward movement height of the sealing pressure sleeve 73, ensure that the first pressure column 72 moves upward to drive the T-shaped pull rod 75 to abut against the top wall of the limiting sleeve 76, and promote the first spring telescopic rod 78 after deflection to reset.

[0027] In the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8 As shown, the opposite sides of the two L-shaped baffles 713 are fixedly connected with second spring telescopic rods 714, the end of the second spring telescopic rod 714 is hemispherical, and the two second spring telescopic rods 714 are on the upper side of the float ball rod 7.

[0028] In the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8 As shown, the chamfered rod 715 is fixedly connected to the side surface of the float ball rod 7 in the axial direction, and the chamfered rod 715 is located below the second spring telescopic rod 714.

[0029] In the embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8 As shown, the inner wall bottom surface of the steam-water separator 33 is installed with a flow guide plate 5 on the right side, the top surface of the flow guide plate 5 is a right-high left-low inclined surface, which is convenient for guiding the condensate water, and the left end of the flow guide plate 5 is chamfered, and the left side of the flow guide plate 5 is provided with a filter screen 6 obliquely installed in the steam-water separator 33, the condensate water is filtered through the lower aperture of the filter screen 6, and the water droplets in the steam are captured through the upper aperture.

[0030] The use method and advantages of the present application are as follows: As shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 8 Figure 1 Figure 2 Figure 3 Figure 4 Figures 5 to 8 Figure 1 Figure 2 Figure 3 Figure 4 Figures 5 to 8 As shown in S1: The steam generated in the steam generator 4 is transported into the first gas conveying pipe 31, when the steam in the first gas conveying pipe 31 flows through the heating bin 2, the heated steam is transported into the seafood steaming cabinet 3 to heat the food in the seafood steaming cabinet 3; S2: Steam waste heat recovery: when the steam flows to the top of the seafood steamer 3, it enters the steam-water separator 33 vertically through the second gas pipe 32 and spreads rapidly around, reducing the flow rate. At this time, the condensed water naturally settles on the guide plate 5 in the steam-water separator 33 under the action of gravity, and is filtered through the filter screen 6 before being introduced into the left side of the inner wall of the steam-water separator 33; The separated steam enters the heat exchanger 35 through the third gas pipe 34. At this time, the water in the cold water tank 37 is pumped into the heat exchanger 35 by the circulating pump 36, and then into the hot water storage tank 38, so that the cold water in the cold water tank 37 flows through the inside of the heat exchanger 35 to absorb the heat of the steam in the heat exchanger 35, and the remaining heat of the steam is recycled and utilized. S3: Condensed water recovery: as the liquid level of the condensed water on the left side of the inner wall of the steam-water separator 33 gradually increases, the floating ball 716 is subjected to buoyancy, causing the floating ball rod 7 to deflect upward and drive the chamfered rod 715 to exert pressure on the end of the second spring telescopic rod 714. As the liquid level continues to rise, the floating ball 716 is subjected to buoyancy greater than the contraction force of the second spring telescopic rod 714, causing the floating ball rod 7 to deflect upward and drive the hinged rod 71 to move upward and pull the first pressure column 72 upward, causing the T-shaped pull rod 75 on the lower side of the first pressure column 72 to pull and move upward in the limiting sleeve 76 and abut against the top of the inner wall thereof, then pull the sealing pressure sleeve 73 out of the drain pipe of the steam-water separator 33, and drive the end sealing sleeve 711 on the side to separate from the end surface of the drain pipe of the steam-water separator 33. When the circular truncated cone 710 moves upward with the sealing pressure sleeve 73, the condensed water enters the liquid delivery pipe 310 from the drain pipe of the steam-water separator 33 and is delivered into the recovery tank 39. S4: Steam-water separator 33 drain pipe sealing: when the condensed water in the steam-water separator 33 is discharged, the floating ball 716 drives the floating ball rod 7 to deflect downward, and the second spring telescopic rod 714 exerts resistance on the chamfered rod 715 of the floating ball rod 7. When the floating ball 716 is about to separate from the condensed water level, the gravity of the floating ball 716 overcomes the contraction force of the second spring telescopic rod 714, causing the floating ball 716 to slowly deflect downward and drive the sealing pressure sleeve 73 to move downward and reinsert into the drain pipe at the bottom of the steam-water separator 33, thereby sealing the drain pipe of the steam-water separator 33. The end sealing sleeve 711 is again abutted against the upper end surface of the drain pipe of the steam-water separator 33 to block the drain pipe of the steam-water separator 33, and the device is reset after discharging.

[0031] S5: auxiliary sealing when impurities cause poor sealing, when the top surface of the steam-water separator 33 drain pipe adheres impurities, the end sealing sleeve 711 cannot abut on the top surface of the steam-water separator 33 drain pipe to form a seal, at this time, when the first pressure column 72 moves downward in the sealing sleeve 73, the T-shaped pull rod 75 end extrudes the limiting sleeve 76, pushes the sealing plug 77 to move downward, at this time, the first spring telescopic rod 78 is deflected, the auxiliary sealing plug 77 downward force is increased, the sealing plug 77 extrudes the air in the internal of the circular table 710, the sealing sleeve 73 and the wear-resistant soft rubber sleeve 712, promotes the wear-resistant soft rubber sleeve 712 to deform and adhere to the inner wall of the steam-water separator 33 drain pipe, and the steam-water separator 33 drain pipe is sealed; When the subsequent first pressure column 72 moves upward to reset, the sealing sleeve 73 that moves upward is abutted by the L-shaped baffle 713, the first pressure column 72 moves upward in the sealing sleeve 73, the first spring telescopic rod 78 is deflected to reset, and the device is reset.

[0032] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, the above examples and the description in the specification are only preferred examples of the present application, and are not used to limit the present application, various changes and improvements of the present application can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A steam waste heat recovery and utilization device, including a fixed support (1), a heating chamber (2), a seafood steamer (3), a steam generator (4), a steam-water separator (33), and a heat exchanger (35); Its features are, The heating chamber (2) is installed on the right side of the top surface of the fixed support (1), and is equipped with a fire bar (21) for heating steam. The seafood steamer (3) is installed on the top of the heating chamber (2). Its steam inlet is connected to the steam generator (4) through the first gas supply pipe (31). The first gas supply pipe (31) passes through the interior of the heating chamber (2) to allow steam to flow through the heating area of ​​the fire bar (21). The steam generator (4) is installed in the middle of the top surface of the fixed support (1). The exhaust port of the seafood steamer (3) is connected to the steam-water separator (33) via the second air supply pipe (32). The steam-water separator (33) is detachably installed on the back of the seafood steamer (3) and is used to separate steam and condensate. The steam outlet of the steam-water separator (33) is connected to the third gas transmission pipe (34), and a heat exchanger (35) is installed on the outer wall of the third gas transmission pipe (34). The heat exchanger (35) is installed on the left side of the top surface of the fixed support (1). The inlet of the heat exchanger (35) is connected to the outlet pipe of the circulating pump (36). The circulating pump (36) is fixed on the top surface of the fixed support (1), and its inlet pipe is connected to the cold water tank (37). The cold water tank (37) is fixed on the left side of the fixed support (1). The outlet of the heat exchanger (35) is connected to the hot water storage tank (38) through a water pipe. The drain pipe of the steam-water separator (33) is connected to the recovery tank (39) via the liquid delivery pipe (310) to return the separated condensate to the recovery tank (39) for recycling.

2. The steam waste heat recovery and utilization device according to claim 1, characterized in that: The first gas pipe (31), the second gas pipe (32), the third gas pipe (34) and the liquid pipe (310) are all made of stainless steel to withstand corrosion from high-temperature steam and condensate.

3. The steam waste heat recovery and utilization device according to claim 1, characterized in that: The gas-water separator (33) has a damped hinged float rod (7) on the left side of its inner wall. The float rod (7) is provided with a float (716) that rises and falls with the level of condensate water at the right end. The rod is hinged to a hinge rod (71) for transmitting the deflection force of the float rod (7). The lower end of the hinge rod (71) is hinged to a first pressure column (72). The first pressure column (72) is fitted with a sealing sleeve (73) on the outside. The outer wall of the sealing sleeve (73) is provided with an end sealing sleeve (711) that abuts against the upper end of the drain pipe of the steam-water separator (33) to achieve the initial sealing of the drain pipe. The bottom end of the first pressure column (72) is connected to the limiting sleeve (76) via the T-shaped tie rod (75). The lower end of the limiting sleeve (76) is connected to the sealing plug (77) that is inserted into the sealing pressure sleeve (73) for auxiliary sealing. The lower end of the sealing sleeve (73) is connected to the truncated cone (710) of the drain pipe of the steam-water separator (33) via the connecting rod (79). The top edge of the truncated cone (710) is provided with a wear-resistant soft rubber sleeve (712), and the bottom surface of the sealing sleeve (73) is glued to the upper side of the wear-resistant soft rubber sleeve (712). The wear-resistant soft rubber sleeve (712) is used to expand under pressure to achieve auxiliary sealing of the drain pipe.

4. The steam waste heat recovery and utilization device according to claim 3, characterized in that: The lower end of the side of the sealing plug (77) is hinged to a first spring telescopic rod (78), and the end of the rod away from the sealing plug (77) is hinged to the lower end of the sealing sleeve (73). The first spring telescopic rod (78) is used to provide elastic assistance for the sealing plug (77) to move downward; and the side of the sealing plug (77) is provided with a sealing sleeve to enhance the sealing effect.

5. The steam waste heat recovery and utilization device according to claim 3, characterized in that, The end sealing sleeve (711) is made of wear-resistant elastic rubber material to accommodate the gap of small impurities on the end face of the drain pipe; the top surface of the sealing sleeve (73) is bonded to the outer side of the first pressure column (72) with a sealing sleeve (74) to seal the gap between the first pressure column (72) and the sealing sleeve (73).

6. The steam waste heat recovery and utilization device according to claim 1, characterized in that: A guide plate (5) is provided on the right side of the bottom surface of the inner wall of the steam-water separator (33). The guide plate (5) is used to guide the condensate to flow to the left side of the inner wall of the steam-water separator (33). A filter screen (6) is installed at an inclination on the left side of the guide plate (5). The filter screen (6) is used to filter impurities in the condensate and capture water droplets in the steam.

7. The steam waste heat recovery and utilization device according to claim 6, characterized in that: The top surface of the guide plate (5) is an inclined surface with the right side higher than the left side, and the left end is chamfered to prevent condensate from accumulating on the left end of the guide plate (5).

8. The steam waste heat recovery and utilization device according to claim 4, characterized in that: Two L-shaped baffles (713) are provided on the left side of the inner wall of the steam-water separator (33), respectively located on the front and rear sides of the float rod (7). The end of the L-shaped baffle (713) away from the steam-water separator (33) is located above the sealing sleeve (73) to limit the upward movement of the sealing sleeve (73) and assist the first spring telescopic rod (78) to reset.

9. The steam waste heat recovery and utilization device according to claim 8, characterized in that: The two L-shaped baffles (713) are provided with a second spring telescopic rod (714) on opposite sides. The end of the rod is hemispherical and located on the upper side of the float rod (7) to provide buffer resistance for the deflection of the float rod (7). The float rod (7) is provided with a chamfered rod (715) located below the second spring telescopic rod (714) on the side to smoothly press the end of the second spring telescopic rod (714).

10. A method of using a steam waste heat recovery and utilization device, comprising using the steam waste heat recovery and utilization device as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: The steam generated by the steam generator (4) is transported through the first gas supply pipe (31), and the steam in the heating chamber (2) is heated by the fire burner (21) and then sent to the seafood steamer (3). S2: After the food in the high-temperature steam heating cabinet is heated, it enters the steam-water separator (33) through the exhaust port and the second gas supply pipe (32). S3: Steam diffuses and slows down in the steam-water separator (33), and condensate is guided to the left side by the guide plate (5). The filter screen (6) filters impurities and captures water droplets. The purified waste heat steam passes through the third gas pipe (34) and heat exchanger (35) to exchange heat with the steam in the third gas pipe (34). The circulating pump (36) sends the cold water from the cold water tank (37) into the heat exchanger to absorb heat, and the hot water is stored in the hot water storage tank (38). S4: When the condensate level rises, the float (716) drives the float rod (7) to deflect. After overcoming the resistance of the second spring telescopic rod (714), the sealing sleeve (73) moves up to open the drain pipe. The condensate flows into the recovery tank (39) through the infusion pipe (310). When the level drops, the float drives the component to reset and the end sealing sleeve (711) seals. When impurities cause poor sealing, the sealing plug (77) moves down to squeeze the wear-resistant soft rubber sleeve (712) to expand and assist in sealing. The L-shaped baffle (713) assists in resetting.

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