Device for recycling heat at outlet of oven

Abstract

The utility model provides a device for recycling heat at an outlet of an oven, which belongs to the field of heat recovery and comprises a water tank and a heat exchange tank, the heat exchange tank is arranged on one side of the water tank, a heat exchange mechanism is arranged at the top of the water tank, and a filter component for treating waste gas is arranged at the top of the heat exchange tank. By arranging the heat exchange mechanism, the effect of heating water through waste gas exhausted by the oven is achieved, in the heat exchange mechanism, the waste gas enters the heat exchange box through a gas inlet pipe, then heat heats water in a heat exchange pipe, meanwhile, a motor drives a rotary disc to rotate, and then a piston rod is driven to slide in a piston box; and the problem that in the prior art, water is extracted by moving the piston through contraction of the spring, but the friction force between the piston and the piston cylinder is large, the piston is driven to move only through the elastic force of the spring, and the phenomenon that the piston is stuck is caused is solved.

Description

Technical Field

[0001] The utility model relates to the field of heat recovery, and more specifically, to a device for heat recovery and utilization at the outlet of a baking oven. Background Art

[0002] A baking oven is a heating device during the heating and drying process of a coating film, or a drying chamber. When in use, the baking oven will emit a large amount of heat, and this heat usually contains a large amount of thermal energy. If not utilized, it will be directly discharged into the atmosphere, causing energy waste. Through direct recovery, this heat can be converted into reusable thermal energy resources.

[0003] After retrieval, in the prior art, a Chinese patent with the patent publication number CN221099440U discloses "a device for heat recovery and utilization at the outlet of a baking oven, including a housing, a water storage tank, a heat exchange component, and an intermittent linkage component. A water storage tank is arranged on one side of the housing, the heat exchange component is arranged between the housing and the water storage tank, and the intermittent linkage component is arranged on one side of the top of the water storage tank; the heat exchange component includes a heat exchange tube, a one-way control valve, a piston cylinder, a communication port, and a piston. One end of the heat exchange tube is connected to the bottom of the water storage tank, a one-way control valve is installed on one side of the bottom end of the heat exchange tube, and the other end of the heat exchange tube passes through the housing and is bent in an 'S' shape inside the housing; the intermittent linkage component includes a connecting rod, a motor, an output shaft, a cam, a moving block, a slider, and a spring. This utility model realizes heat recovery and utilization, and can make water flow slowly in the heat exchange tube, effectively improving the heat recovery efficiency", but there are still the following defects:

[0004] (1) When this device is in use, the piston is moved by the contraction of the spring to extract water, but the friction between the piston and the piston cylinder is relatively large. Only relying on the elastic force of the spring to drive the piston to move will result in the phenomenon of piston jamming.

[0005] (2) However, when this device is in use, it cannot clean the dust inside the dust collector, which will cause more and more dust inside the dust collector, and further affect the dust filtration effect.

[0006] Therefore, we make improvements on this and propose a device for heat recovery and utilization at the outlet of a baking oven. Summary of the Utility Model

[0007] The purpose of the present utility model is to address the problem that when a device for heat recovery and utilization at the outlet of a baking oven is in use, the piston is moved by the contraction of the spring to extract water, but the friction between the piston and the piston cylinder is relatively large. Only relying on the elastic force of the spring to drive the piston to move will result in the phenomenon of piston jamming.

[0008] In order to achieve the above-mentioned utility model purpose, the present utility model provides the following technical solutions:

[0009] A device for heat recovery and utilization at the outlet of a baking furnace to improve the above problems.

[0010] The specific structure of the present utility model is as follows:

[0011] It includes a water tank and a heat exchange tank. The heat exchange tank is arranged on one side of the water tank. A heat exchange mechanism is arranged at the top of the water tank, and a filtering component for treating waste gas is arranged at the top of the heat exchange tank;

[0012] The heat exchange mechanism includes an intake pipe, an exhaust pipe, a heat exchange pipe, a one-way valve, a piston box, a communication groove, a piston rod, a connecting part, a support frame, a motor, a disc and a pin. The intake pipe is communicatively arranged on the side wall of the heat exchange tank, the exhaust pipe is communicatively arranged at the top of the heat exchange tank, the heat exchange pipe is communicatively arranged on the side wall of the water tank, the one-way valve is arranged outside the heat exchange pipe, the piston box is communicatively arranged at one end of the heat exchange pipe, the communication groove is opened at the bottom of the piston box, the piston rod is slidably connected inside the piston box, the connecting part is hinged to one end of the piston rod, the support frame is bolted to the top of the water tank, the motor is bolted to the bottom of the support frame, the disc is fixedly connected to the output end of the motor, the pin is eccentrically arranged at the bottom of the disc, the pin is rotatably connected with the connecting part, and the heat exchange pipe is located inside the heat exchange tank.

[0013] As a preferred technical solution of the present utility model, the filtering component includes a filtering box, a filter screen and a rectangular groove. The filtering box is bolted to the top of the heat exchange tank, the filter screen is inserted into the inside of the filtering box, and the rectangular groove is opened at the top of the filter screen.

[0014] As a preferred technical solution of the present utility model, a heat preservation cotton for reducing heat loss is arranged outside the heat exchange pipe, and both ends of the heat preservation cotton are closely attached to the side walls of the piston box and the heat exchange tank respectively.

[0015] As a preferred technical solution of the present utility model, support legs for reducing heat loss are bolted to the bottoms of both the water tank and the heat exchange tank, and the number of the support legs is eight and they are evenly distributed.

[0016] As a preferred technical solution of the present utility model, a fixing ring is welded on the side wall of the heat preservation cotton, a connecting rod is welded on the side wall of the fixing ring, and one end of the connecting rod is bolted to the outer wall of the water tank.

[0017] As a preferred technical solution of the present utility model, a switch door for facilitating the maintenance of the heat exchange pipe is hinged on the side wall of the heat exchange tank, a sealing gasket is adhered to the side wall of the heat exchange tank, and the side wall of the switch door is closely attached to the side wall of the sealing gasket.

[0018] As a preferred technical solution of the present utility model, an I-shaped rod is bolted to the side wall of the water tank, and one end of the I-shaped rod is bolted to the side wall of the heat exchange tank.

[0019] As a preferred technical solution of the present utility model, a water inlet pipe and a drain pipe are respectively and communicatively arranged on the side wall of the water tank, and the drain pipe is located below the water inlet pipe.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] In the solution of the present utility model:

[0022] 1. Through the provided heat exchange mechanism, the function of heating water with the waste gas discharged from the baking furnace is realized. In the heat exchange mechanism, the waste gas enters the interior of the heat exchange tank through the intake pipe, and then the heat heats the water inside the heat exchange tube. At the same time, the motor drives the turntable to rotate, which in turn drives the piston rod to slide inside the piston box, so that the water automatically moves inside the device, making the water fully heated, solving the problem in the prior art that the piston is moved by the contraction of the spring to extract water, but the friction between the piston and the piston cylinder is large, and only relying on the elastic force of the spring to drive the piston to move will result in the phenomenon of piston jamming.

[0023] 2. Through the provided filtering component, the function of filtering the waste gas discharged from the interior of the heat exchange tank is realized. In the filtering component, the waste gas enters the interior of the exhaust pipe and the filtering box through the heat exchange tank. At this time, the filter screen filters the dust. When there is a lot of dust on the filter screen, the filter cartridge is pulled out through the rectangular groove, and then the filter screen can be cleaned, solving the problem in the prior art that the dust inside the dust collector cannot be cleaned, which will cause more and more dust inside the dust collector, thereby affecting the dust filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the device for heat recovery and utilization at the outlet of the baking furnace provided by the present utility model;

[0025] Figure 2 is a left view of the device for heat recovery and utilization at the outlet of the baking furnace provided by the present utility model;

[0026] Figure 3 is the device for heat recovery and utilization at the outlet of the baking furnace provided by the present utility model Figure 2 The three-dimensional sectional view at A-A in;

[0027] Figure 4 is the device for heat recovery and utilization at the outlet of the baking furnace provided by the present utility model Figure 3 The enlarged view at A in;

[0028] Figure 5Device for heat recovery and utilization at the outlet of a baking furnace provided by the present utility model Figure 3 Enlarged view of part B in

[0029] Labels in the figure:

[0030] 1. Water tank; 2. Heat exchange tank; 3. Heat exchange mechanism; 4. Filter assembly; 5. Thermal insulation cotton; 6. Support leg; 7. Fixed ring; 8. Connecting rod; 9. Switching door; 10. Sealing gasket; 11. I-shaped rod; 12. Water inlet pipe; 13. Drain pipe; 301. Air inlet pipe; 302. Exhaust pipe; 303. Heat exchange pipe; 304. Check valve; 305. Piston box; 306. Communication groove; 307. Piston rod; 308. Connection part; 309. Support frame; 310. Motor; 311. Disc; 312. Plug; 401. Filter box; 402. Filter screen; 403. Rectangular groove. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0032] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] Refer to Figures 1 to 5 , the present utility model provides a technical solution:

[0036] A device for heat recovery and utilization at the outlet of a baking furnace, comprising a water tank 1 and a heat exchange tank 2. The heat exchange tank 2 is arranged on one side of the water tank 1. A heat exchange mechanism 3 is arranged at the top of the water tank 1, and a filter assembly 4 for treating waste gas is arranged at the top of the heat exchange tank 2;

[0037] The heat exchange mechanism 3 includes an intake pipe 301, an exhaust pipe 302, a heat exchange pipe 303, a check valve 304, a piston box 305, a communication groove 306, a piston rod 307, a connecting part 308, a support frame 309, a motor 310, a disc 311 and a pin 312. The intake pipe 301 is communicatively connected to the side wall of the heat exchange box 2, the exhaust pipe 302 is communicatively connected to the top of the heat exchange box 2, the heat exchange pipe 303 is communicatively connected to the side wall of the water tank 1, the check valve 304 is arranged outside the heat exchange pipe 303, the piston box 305 is communicatively connected to one end of the heat exchange pipe 303, the communication groove 306 is opened at the bottom of the piston box 305, the piston rod 307 is slidably connected to the inside of the piston box 305, the connecting part 308 is hinged to one end of the piston rod 307, the support frame 309 is bolted to the top of the water tank 1, the motor 310 is bolted to the bottom of the support frame 309, the disc 311 is fixedly connected to the output end of the motor 310, the pin 312 is eccentrically arranged at the bottom of the disc 311, the pin 312 is rotatably connected to the connecting part 308, and the heat exchange pipe 303 is located inside the heat exchange box 2.

[0038] Specifically, as Figure 1 shown, a heat insulating cotton 5 for reducing heat loss is arranged outside the heat exchange pipe 303, and both ends of the heat insulating cotton 5 are closely attached to the side walls of the piston box 305 and the heat exchange box 2 respectively.

[0039] Specifically, as Figure 1 shown, support legs 6 for reducing heat loss are bolted to the bottoms of both the water tank 1 and the heat exchange box 2, and the number of the support legs 6 is eight and they are evenly distributed.

[0040] Specifically, as Figure 1 shown, a fixing ring 7 is welded on the side wall of the heat insulating cotton 5, a connecting rod 8 is welded on the side wall of the fixing ring 7, and one end of the connecting rod 8 is bolted to the outer wall of the water tank 1.

[0041] Specifically, as Figure 1 shown, a switch door 9 for facilitating the maintenance of the heat exchange pipe 303 is hinged on the side wall of the heat exchange box 2, a sealing gasket 10 is adhered to the side wall of the heat exchange box 2, and the side wall of the switch door 9 is closely attached to the side wall of the sealing gasket 10.

[0042] Specifically, as Figure 1 shown, an I-shaped rod 11 is bolted to the side wall of the water tank 1, and one end of the I-shaped rod 11 is bolted to the side wall of the heat exchange box 2.

[0043] Specifically, as Figure 3 shown, a water inlet pipe 12 and a drain pipe 13 are respectively communicatively connected to the side wall of the water tank 1, and the drain pipe 13 is located below the water inlet pipe 12.

[0044] During use, the hot air discharged from the baking oven enters the interior of the heat exchange box 2 through the air inlet pipe 301. At this time, the motor 310 is connected to an external power supply, and then the motor 310 is started. The motor 310 drives the disc 311 to rotate. Since the pin 312 is eccentrically arranged at the bottom of the disc 311, when the disc 311 rotates, it will drive the piston rod 307 to reciprocate inside the piston box 305. At this time, through the setting of the one-way valve 304, when the piston rod 307 moves to the side away from the motor 310, it will cause air to enter the interior of the water tank 1 through the communication groove 306 to squeeze the water, and at the same time, the water inside the heat exchange tube 303 will also be extracted. Through the action of these two forces, the water located inside the water tank 1 will gradually move along the heat exchange tube 303, enabling the water to fully contact the heat and achieve the heat exchange effect. At the same time, the heat insulation cotton 5 can keep the water warm and prevent the heat from being lost too quickly. By setting the I-shaped rod 11, it can prevent the heat exchange box 2 and the water tank 1 from shifting, resulting in the heat exchange tube 303 being bent and then broken.

[0045] Specifically, as Figure 5 shown, the filtering component 4 includes a filter box 401, a filter screen 402, and a rectangular groove 403. The filter box 401 is bolted to the top of the heat exchange box 2, the filter screen 402 is inserted into the interior of the filter box 401, and the rectangular groove 403 is opened at the top of the filter screen 402.

[0046] When the waste gas discharged from the heat exchange box 2 enters the interior of the filter box 401, the filter screen 402 will filter the waste gas to prevent impurities from being discharged into the atmosphere. Whenever one heat exchange is completed, the user can take out the filter screen 402 through the rectangular groove 403 and then clean the filter screen 402 to prevent debris from clogging the filter screen 402 and affecting the filtering effect.

[0047] Specifically, when the device for heat recovery at the oven outlet is in use: the hot air discharged from the oven enters the interior of the heat exchange box 2 through the air inlet pipe 301, and the motor 310 is connected to the external power supply, and then the motor 310 is started, and the motor 310 drives the disc 311 to rotate. Because the latch 312 is eccentrically arranged at the bottom of the disc 311, when the disc 311 rotates, it drives the piston rod 307 to reciprocate inside the piston box 305. At this time, through the setting of the one-way valve 304, when the piston rod 307 moves to the side away from the motor 310, air will enter the interior of the water tank 1 through the connecting groove 306 to squeeze the water, and at the same time, the water inside the heat exchange tube 303 will be extracted. Through the action of the two forces, The water inside the water tank 1 will gradually move along the heat exchange tube 303, so that the water can fully contact the heat to achieve the heat exchange effect. At the same time, the thermal insulation cotton 5 can keep the water warm to prevent the heat from being lost too quickly. After the heat exchange is completed, the water can be discharged through the drain pipe 13. By setting the I-beam 11, it is possible to prevent the heat exchange box 2 and the water tank 1 from being offset, causing the heat exchange tube 303 to bend and then break. When the exhaust gas discharged from the heat exchange box 2 enters the filter box 401, the filter 402 will filter the exhaust gas to prevent impurities from being discharged into the atmosphere. After each heat exchange is completed, the user can take out the filter 402 through the rectangular groove 403, and then clean the filter 402 to prevent debris from clogging the filter 402 and affecting the filtering effect.

[0048] All technical features in this embodiment can be freely combined according to actual needs.

[0049] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A device for heat recovery and utilization at the outlet of a baking furnace, comprising a water tank (1) and a heat exchange tank (2), characterized in that, The heat exchange box (2) is arranged on one side of the water tank (1). A heat exchange mechanism (3) is arranged at the top of the water tank (1), and a filtering component (4) for treating waste gas is arranged at the top of the heat exchange box (2). The heat exchange mechanism (3) includes an air inlet pipe (301), an exhaust pipe (302), a heat exchange pipe (303), a one-way valve (304), a piston box (305), a communication groove (306), a piston rod (307), a connecting part (308), a support frame (309), a motor (310), a disc (311) and a plug pin (312). The air inlet pipe (301) is communicatively arranged on the side wall of the heat exchange box (2), the exhaust pipe (302) is communicatively arranged at the top of the heat exchange box (2), the heat exchange pipe (303) is communicatively arranged on the side wall of the water tank (1), the one-way valve (304) is arranged outside the heat exchange pipe (303), the piston box (305) is communicatively arranged at one end of the heat exchange pipe (303), the communication groove (306) is opened at the bottom of the piston box (305), the piston rod (307) is slidably connected inside the piston box (305), the connecting part (308) is hinged to one end of the piston rod (307), the support frame (309) is bolted to the top of the water tank (1), the motor (310) is bolted to the bottom of the support frame (309), the disc (311) is fixedly connected to the output end of the motor (310), the plug pin (312) is eccentrically arranged at the bottom of the disc (311), the plug pin (312) is rotatably connected to the connecting part (308), and the heat exchange pipe (303) is located inside the heat exchange box (2).

2. The device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, wherein The filtering component (4) includes a filtering box (401), a filter screen (402) and a rectangular groove (403). The filtering box (401) is bolted to the top of the heat exchange box (2), the filter screen (402) is inserted into the filtering box (401), and the rectangular groove (403) is opened at the top of the filter screen (402).

3. A device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, characterized in that, A heat preservation cotton (5) for reducing heat loss is arranged outside the heat exchange pipe (303), and both ends of the heat preservation cotton (5) are closely attached to the side walls of the piston box (305) and the heat exchange box (2).

4. A device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, characterized in that, Support legs (6) for reducing heat loss are bolted to the bottoms of the water tank (1) and the heat exchange box (2), and the number of the support legs (6) is eight and they are evenly distributed.

5. The device for heat recovery and utilization at the outlet of a baking furnace according to claim 3, characterized in that A fixing ring (7) is welded on the side wall of the heat preservation cotton (5), a connecting rod (8) is welded on the side wall of the fixing ring (7), and one end of the connecting rod (8) is bolted to the outer wall of the water tank (1).

6. The device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, characterized in that, A switch door (9) for facilitating the maintenance of the heat exchange pipe (303) is hinged on the side wall of the heat exchange box (2), a sealing gasket (10) is adhered to the side wall of the heat exchange box (2), and the side wall of the switch door (9) is closely attached to the side wall of the sealing gasket (10).

7. A device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, characterized in that, An I-shaped rod (11) is bolted to the side wall of the water tank (1), and one end of the I-shaped rod (11) is bolted to the side wall of the heat exchange box (2).

8. A device for heat recovery and utilization at the outlet of a baking furnace according to claim 1, characterized in that, A water inlet pipe (12) and a drain pipe (13) are respectively and communicatively arranged on the side wall of the water tank (1), and the drain pipe (13) is located below the water inlet pipe (12).

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