Heat energy recovery device

Abstract

The utility model relates to a heat energy recovery device which comprises a plurality of spiral heat energy recovery assemblies, each spiral heat energy recovery assembly comprises an outer pipe body with two open ends, at least two spiral heat exchange pipes are arranged in an inner cavity of each outer pipe body, and each spiral heat energy recovery assembly further comprises an air blower. One end of each spiral heat exchange pipe is communicated with one end of the air blower through a pipeline, and the other end of each spiral heat exchange pipe is communicated with the atmosphere or a drying oven of the setting machine. The heat energy recovery device is small in size, convenient to install, transport, maintain and expand a production line, easy to clean and low in energy consumption.

Description

Technical Field

[0001] The utility model relates to a heat exchange device, in particular to a heat energy recovery device. Background Art

[0002] The fabric setting machine is one of the essential equipment in the field of textile printing and dyeing. It is a large high-temperature oven composed of several rectangular ovens, each of which is equipped with an independent fan, natural gas input and ignition combustion device. When working, the fabric is unfolded and input into the oven through the transmission chain in the oven, and then dried by the hot air in the oven to stabilize the properties of the fabric after cooling.

[0003] Since the fabric is dried and shaped by hot air of one or two hundred degrees inside the setting machine, the required hot air temperature in the setting machine is generally about 180°C (may be higher depending on the process requirements). The actual detection of the air temperature in the exhaust flue is still as high as 170 degrees, which means that it has only been reduced by about 10 degrees.

[0004] Taking into account fuel combustion losses and machine heat dissipation losses, it is estimated that more than 90% of the heat input to the setting machine is dissipated into the atmosphere through exhaust gas, and the heat actually consumed in processing the fabric accounts for a relatively low proportion of the heat input to the setting machine.

[0005] Therefore, in order to save energy, the setting machine is generally equipped with a heat recovery device to achieve the recovery and reuse of heat energy.

[0006] The existing heat recovery device of the setting machine is generally an external large-scale heat recovery box. For example, a Chinese patent with publication number "CN217929902U" discloses a waste heat recovery and energy-saving system for a setting machine, in which a heat exchange chamber is installed with a heat exchanger, and a plurality of fins are arranged in the heat exchanger. When working, the exhaust gas flows through the heat exchange chamber, and the finned heat exchanger in the heat exchange chamber realizes the recovery of heat energy.

[0007] The heat recovery device of this structure mainly includes the following defects.

[0008] 1. When the fabric is dried, a lot of oil smoke will be produced, and the oil smoke will be adsorbed on the fins, making it difficult to clean.

[0009] 2. Due to their large area, the fins can easily block air circulation, and the fumes are difficult to clean, which can easily lead to blockage and even fire.

[0010] 3. The recovered heat energy requires additional fans to distribute and recycle to the corresponding ovens, resulting in energy waste.

[0011] 4. Although the fins absorb heat energy, they also hinder air circulation. Insufficient gas volume will result in insufficient or even incomplete combustion of the gas. In order to ensure air flux and achieve sufficient combustion, the heat recovery device must be large, so it takes up a lot of space resources, which makes its installation and transportation inconvenient.

[0012] 5. When expanding the oven for an existing production line, a separate heat recovery device must be set up for it, otherwise the heat energy may not be fully recovered. If a separate heat recovery device is set up, due to the large overall size of the heat recovery device, this will not only greatly increase the cost, but may also lead to redundancy of recovery capacity, resulting in waste.

[0013] 6. The existing fin-type heat exchange device has a relatively complex structure, which is not convenient for operators to maintain it later. Utility Model Content

[0014] In order to solve the technical problems that the above-mentioned fins are difficult to clean and cause blockage, the overall size of the recovery device is large, and it is inconvenient to transport, install, maintain and expand the production line, the utility model provides a heat recovery device which is small in size, easy to install, transport, maintain and expand the production line, and easy to clean.

[0015] The heat energy recovery device of the utility model comprises a plurality of spiral heat energy recovery components, wherein the spiral heat energy recovery components comprise an outer tube body with openings at both ends, wherein at least two spiral heat exchange tubes are arranged in the inner cavity of the outer tube body, and the spiral heat energy recovery components further comprise a blower, wherein one end of the two spiral heat exchange tubes are connected to one end of the blower through a pipeline, and the other end of the spiral heat exchange tube is connected to the atmosphere or the oven of a shaping machine.

[0016] The advantage of this heat recovery device is that it includes several spiral heat recovery components, and at least two spiral heat exchange tubes are arranged in the outer tube body of the spiral heat recovery component. One end of the two spiral heat exchange tubes is connected to the blower, and the other end is connected to the atmosphere or the oven of the shaping machine.

[0017] Since the spiral heat exchange tube is used for heat exchange, compared with the fin type heat exchange device, the spiral heat exchange tube has a smaller area and less resistance to the fluid. The smoke in the exhaust gas is not easy to be adsorbed on the surface of the spiral heat exchange tube, so it is not easy to cause blockage and cause fire. At the same time, compared with the plate-fin type heat exchange device, the spiral heat exchange tube is longer and the heat exchange time is longer because it uses a ring-shaped spiral tube, thereby improving the heat exchange effect.

[0018] The provision of at least two spiral heat exchange tubes ensures the flux of recycled air to prevent the problem of incomplete combustion due to insufficient air.

[0019] At the same time, the spiral heat recovery component has a simple structure and is easy to transport, install and maintain. In the field of textile printing and dyeing, when the setting machine is installed or expanded, the spiral heat recovery component can be directly connected to the exhaust flue of the original setting machine, which is extremely convenient to operate.

[0020] In addition, since the outer tube body is relatively large and only a number of spiral heat exchange tubes are arranged inside, the cleaning robot can easily enter the outer tube body and clean the inside thereof.

[0021] The setting of the blower can realize the suction or blowing of external cold air into the spiral heat exchange tube, so that it can exchange heat with the high-temperature exhaust gas in the outer tube body, thereby realizing the purpose of heat recovery.

[0022] Furthermore, in the heat recovery device of the utility model, the number of the spiral heat exchange tubes is two, and one of the spiral heat exchange tubes is wound around the outside of the other spiral heat exchange tube.

[0023] The arrangement of two spiral heat exchange tubes not only ensures the air flux to meet the combustion requirements, but also reduces the resistance of the exhaust gas in the exhaust pipe as much as possible.

[0024] At the same time, one of the spiral heat exchange tubes is wound around the outside of the other spiral heat exchange tube, which increases the overall heat recovery rate of the heat recovery device and greatly reduces the volume occupied by the spiral heat exchange tube, thereby reducing the overall volume of the outer tube body and the spiral heat exchange assembly for easier installation and transportation.

[0025] Furthermore, in the heat recovery device of the utility model, a door hole is provided on the tube wall of the outer tube body, and a closing door with one side hinged to the outer tube body is provided at the door hole.

[0026] The provision of the door hole and the closing door facilitates the operator to observe the interior of the outer tube body through the door hole and then perform maintenance operations thereon.

[0027] Furthermore, in the heat recovery device of the utility model, a sewage outlet is also provided on the tube wall of the outer tube body.

[0028] The sewage outlet is arranged so that the impurities in the outer tube body after cleaning can be discharged through the sewage outlet on the tube wall.

[0029] Furthermore, the heat energy recovery device of the utility model also includes an exhaust gas inlet pipe and a hot air return pipe, the exhaust gas inlet pipe is arranged at one end of the outer tube body and connected to the outer tube body, one end of the spiral heat exchange tube is fixedly arranged on the outer tube body and connected to the atmosphere, the other end of the spiral heat exchange tube is connected to one end of the hot air return pipe through a pipeline, and the other end of the hot air return pipe is connected to one end of the blower.

[0030] The provision of the exhaust gas inlet duct facilitates the connection between the spiral heat recovery component and the exhaust gas generating equipment such as the shaping machine.

[0031] Furthermore, in the heat recovery device of the utility model, the other end of the outer tube body is provided with an exhaust gas output pipe, one end of the exhaust gas output pipe is fixedly connected to the outer tube body and communicated with the outer tube body, and the exhaust gas output pipe is also communicated with the exhaust gas collecting pipe.

[0032] The exhaust gas output pipe is provided to output the exhaust gas to the exhaust gas collecting pipe. The exhaust gas collecting pipe is provided to collect the exhaust gas outputted from the outer pipe body and the exhaust gas output pipe, and transmit it to the exhaust gas treatment devices such as the range hood and the cooling tower at the far end.

[0033] At the same time, the exhaust gas collection pipe can connect several spiral heat recovery components to form a combined heat recovery device, thereby improving the overall exhaust gas treatment capacity of the device.

[0034] Furthermore, in the heat energy recovery device of the utility model, a lifting door assembly is provided at the other end of the exhaust gas output pipe, the lifting door assembly includes a lifting door arranged at the end of the exhaust gas output pipe and a lifting driver driving the lifting door to lift and lower, and a walking platform is provided in the exhaust gas output pipe extending from the lifting door to the spiral heat exchange tube.

[0035] The setting of the lifting door realizes the opening and closing of the exhaust gas output pipe, so that the cleaning robot can enter the interior of the outer tube body through the exhaust gas output pipe to clean the interior thereof.

[0036] The arrangement of the walking platform facilitates the cleaning robot to walk to the spiral heat exchange tube through the walking platform, thereby cleaning the spiral heat exchange tube.

[0037] Furthermore, in the heat recovery device of the utility model, the exhaust gas collecting pipes of several spiral heat recovery components are connected end to end in sequence, and one of the exhaust gas collecting pipes is connected to the cooling tower through a pipeline.

[0038] The exhaust gas collecting pipes of each spiral heat recovery component are connected end to end so that each exhaust gas collecting pipe can be connected to form an integrated exhaust gas collecting device to centrally collect and process the exhaust gas discharged by each spiral heat recovery component.

[0039] Furthermore, in the heat recovery device of the utility model, the blower is arranged on the oven of the setting machine, and the air outlet of the blower is also connected to the burner through a pipeline.

[0040] This arrangement enables the use of the blower on the shaping machine and the blower on the spiral heat recovery component, so that the heat recovery device does not need to have a separate blower for the spiral heat recovery component, thereby reducing equipment costs and facilitating installation.

[0041] Furthermore, in the heat recovery device of the utility model, the spiral heat recovery component is installed above the oven of the shaping machine, and the bottom end of the exhaust gas inlet pipe is arranged on the top wall of the oven and is connected to the exhaust gas outlet of the oven.

[0042] This setting realizes the heat recovery of the spiral heat recovery component and the reuse function of the exhaust gas emission of the setting machine. The operator can realize the heat recovery device by modifying the existing setting machine flue, thereby reducing costs.

[0043] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it in accordance with the contents of the specification, the following embodiments of the utility model are described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a cross-sectional view of a spiral heat exchange component.

[0045] Figure 2 It is a three-dimensional diagram of a spiral heat exchange component.

[0046] Figure 3 It is another stereoscopic view of the spiral heat exchange component.

[0047] Figure 4 It is a three-dimensional diagram of two spiral heat exchange tubes.

[0048] Figure 5 It is a three-dimensional coordination diagram of the hot air return pipe and the blower.

[0049] Figure 6 is a perspective view of a lift door assembly.

[0050] Figure 7 It is a three-dimensional coordination diagram of the exhaust gas output pipe and the exhaust gas collecting pipe.

[0051] Figure 8 It is a plan view of a heat recovery device including four sets of spiral heat exchange components.

[0052] Fig. 9 It is the usage status diagram of the heat recovery device.

[0053] Fig.10 yes Fig. 9 A partial enlarged view of part A in the middle.

[0054] Fig.11 yes Fig. 9 A partial enlarged view of part B in the middle.

[0055] In the figure, an outer tube body 1, a spiral heat exchange tube 2, a blower 3, a connecting plate 4, a closing door 5, a handle 6, a sewage outlet 7, an exhaust gas inlet pipe 8, a hot air return pipe 9, a butterfly valve 10, an exhaust gas output pipe 11, an exhaust gas collecting pipe 12, a lifting door 13, a lifting drive 14, a walking platform 15, a door frame 16, a cylinder 17, an oven 18, a workbench 19, a cleaning robot 20, and a burner 21. DETAILED DESCRIPTION

[0056] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0057] Example 1: See Figures 1 to 11 The heat recovery device of this embodiment includes a plurality of spiral heat recovery components. The spiral heat recovery components include an outer tube body 1 with openings at both ends. At least two spiral heat exchange tubes 2 are arranged in the inner cavity of the outer tube body. The spiral heat recovery component also includes a blower 3. One end of the two spiral heat exchange tubes is connected to one end of the blower through a pipeline, and the other end of the spiral heat exchange tube is connected to the atmosphere or the oven of the shaping machine.

[0058] The advantage of this heat recovery device is that it includes several spiral heat recovery components, and at least two spiral heat exchange tubes are arranged in the outer tube body of the spiral heat recovery component. One end of the two spiral heat exchange tubes is connected to the blower, and the other end is connected to the atmosphere or the oven of the shaping machine.

[0059] Since the spiral heat exchange tube is used for heat exchange, compared with the fin type heat exchange device, the spiral heat exchange tube has a smaller area and less resistance to the fluid. The smoke in the exhaust gas is not easy to be adsorbed on the surface of the spiral heat exchange tube, so it is not easy to cause blockage and cause fire. At the same time, compared with the plate-fin type heat exchange device, the spiral heat exchange tube is longer and the heat exchange time is longer because it uses a ring-shaped spiral tube, thereby improving the heat exchange effect.

[0060] The provision of at least two spiral heat exchange tubes ensures the flux of recycled air to prevent the problem of incomplete combustion due to insufficient air.

[0061] At the same time, the spiral heat recovery component has a simple structure and is easy to transport, install and maintain. In the field of textile printing and dyeing, when the setting machine is installed or expanded, the spiral heat recovery component can be directly connected to the exhaust flue of the original setting machine, which is extremely convenient to operate.

[0062] In addition, since the outer tube body is relatively large and only a number of spiral heat exchange tubes are arranged inside, the cleaning robot can easily enter the outer tube body and clean the inside thereof.

[0063] The setting of the blower can realize the suction or blowing of external cold air into the spiral heat exchange tube to exchange heat with the high-temperature exhaust gas in the outer tube body, thereby realizing the purpose of heat recovery.

[0064] In the field of setting machines, the blower can use the existing blower for conveying gas on the setting machine to reduce costs and energy consumption. At this time, the blower is in the suction mode, the end of the spiral heat exchange tube is connected to the air inlet end of the blower, and the other end of the spiral heat exchange tube is connected to the atmosphere. When working, the blower sucks the cold air from the external atmosphere into the spiral heat exchange tube. After being heated by the high-temperature exhaust gas in the outer tube body, the hot air is ① sent by the blower to the air and natural gas intake control device on the oven, and finally input into the combustion chamber inside the oven for combustion, ② or directly sent to the oven air inlet, so as to realize the recovery and utilization of the exhaust gas heat, or ③ transported to any place where the heat energy can be reused.

[0065] In addition, the blower can also be set at the air inlet end of the spiral heat exchange tube, and the other end of the spiral heat exchange tube is directly connected to the oven. At this time, the blower is in the blowing mode, and the external atmosphere is blown into the spiral heat exchange tube under the action of the blower, and then flows back into the oven after being heated by the high-temperature exhaust gas.

[0066] In summary, the existing heat recovery devices either have large air resistance in the flue, or are large and bulky as a whole (to ensure air flow, they must be large), or are easily attached with oil smoke and difficult to clean.

[0067] The heat recovery device is not only small in size, easy to install, transport, maintain and expand the production line, but the spiral heat exchange tubes not only ensure the air flux, but also have less resistance to exhaust gas, less oil fume adhesion, and are easy to clean.

[0068] The following is the specific working process of the heat recovery device.

[0069] In specific implementation, the heat recovery device is installed above the setting machine, the exhaust gas inlet end of the outer tube body is connected to the exhaust gas outlet of the setting machine oven, and the other end of the outer tube body can be connected to the remote exhaust gas treatment device such as the range hood and cooling tower through a pipeline.

[0070] During operation, the exhaust gas enters the outer tube body from the exhaust gas outlet of the oven and is transmitted to the exhaust gas treatment device at the far end through the outer tube body.

[0071] During the transmission process in the outer tube body, the high-temperature exhaust gas heats the spiral heat exchange tube in the outer tube body. At the same time, the external air enters the spiral heat exchange tube under the action of the blower, and is heated by the high-temperature exhaust gas and the spiral heat exchange tube to form hot air, and finally enters the combustion chamber in the oven through the burner, or directly enters the oven, thereby realizing the recovery of exhaust gas heat.

[0072] Several spiral heat recovery components can be installed and operated separately, or their outer tube bodies can be connected to the exhaust gas collection pipe, so as to uniformly collect and process the exhaust gas discharged from each spiral heat exchange tube.

[0073] Preferably, the spiral heat exchange tube is made of metal material to improve its heat exchange efficiency.

[0074] Preferably, in the heat recovery device of this embodiment, the number of the spiral heat exchange tubes is two, and one of the spiral heat exchange tubes is wound around the outside of the other spiral heat exchange tube.

[0075] The arrangement of two spiral heat exchange tubes not only ensures the air flux to meet the combustion requirements, but also reduces the resistance of the exhaust gas in the exhaust pipe as much as possible.

[0076] At the same time, one of the spiral heat exchange tubes is wound around the outside of the other spiral heat exchange tube, which increases the overall heat recovery rate of the heat recovery device and greatly reduces the volume occupied by the spiral heat exchange tube, thereby reducing the overall volume of the outer tube body and the spiral heat exchange assembly for easier installation and transportation.

[0077] Preferably, both spiral heat exchange tubes are cylindrical spiral tubes, and the horizontal projection circle diameter of one spiral heat exchange tube is larger than the horizontal projection circle diameter of the other spiral heat exchange tube, and the cylindrical spiral tube with smaller horizontal projection circle is located inside the cylindrical spiral tube with larger horizontal projection circle diameter.

[0078] Two spiral tubes with different horizontal projection circle diameters are set, and the spiral tube with a smaller projection circle is placed inside the other spiral tube with a larger projection circle, which reduces the overall volume occupied by the two spiral heat exchange tubes and also facilitates the preparation of the spiral heat exchange tubes.

[0079] Among them, the horizontal projection circle is the cross section of the cylinder where the cylindrical spiral tube is located.

[0080] The two spiral heat exchange tubes can be fixed by a plurality of connecting plates 4 to maintain the distance between the two spiral heat exchange tubes.

[0081] In addition, the spiral heat exchange tube may also be a conical spiral tube, an irregular spiral tube, etc., which will not be described in detail here.

[0082] In this embodiment, one end of the two spiral heat exchange tubes is respectively arranged on the tube wall of the outer tube body, and the other ends of the two spiral tubes are connected to each other and to one end of the blower through a pipeline.

[0083] Preferably, in the heat recovery device of this embodiment, a door hole is provided on the tube wall of the outer tube body, and a closing door 5 is provided at the door hole, one side of which is hinged to the outer tube body.

[0084] The provision of the door hole and the closing door facilitates the operator to observe the interior of the outer tube body through the door hole and then perform maintenance operations thereon.

[0085] In specific implementation, the closing door is an arc-shaped closing door with a cross section consistent with the outer tube body. A handle 6 is provided on one side of its outer wall for the operator to operate the closing door, and the other side is hinged to the connecting beam on the outer tube body through a hinge.

[0086] Preferably, a sewage outlet 7 is also provided on the tube wall of the outer tube body.

[0087] The sewage outlet is arranged so that the impurities in the outer tube body after cleaning can be discharged through the sewage outlet on the tube wall.

[0088] Preferably, the heat energy recovery device of this embodiment further includes an exhaust gas inlet pipe 8 and a hot air return pipe 9. The exhaust gas inlet pipe is arranged at one end of the outer tube body and is connected to the outer tube body. One end of the spiral heat exchange tube is fixedly arranged on the outer tube body and is connected to the atmosphere. The other end of the spiral heat exchange tube is connected to one end of the hot air return pipe through a pipeline, and the other end of the hot air return pipe is connected to one end of the blower.

[0089] The provision of the exhaust gas inlet duct facilitates the connection between the spiral heat recovery component and the exhaust gas generating equipment such as the molding machine.

[0090] During specific implementation, the blower is arranged outside the oven of the setting machine, and the air inlet end thereof is connected to the spiral heat exchange tube through a hot air return pipe.

[0091] Since the blower is arranged on the outer side of the shaping machine oven, it is at a certain distance from the spiral heat recovery component, and the hot air return pipe realizes the connection between the heated hot air and the blower, so that the hot air after heat recovery can flow back into the oven through the hot air return pipe and the blower. In specific implementation, the recovered hot air can be delivered to the gas burner for direct combustion, so that the burner can reach the target temperature with less natural gas consumption. In addition, the hot air can also be delivered to other places where heat energy is needed, such as directly delivered to the air inlet of the shaping machine oven, replacing the low-temperature air with high-temperature air, thereby achieving the purpose of energy saving.

[0092] Both the hot air return pipe and the exhaust air inlet pipe can be L-shaped pipes to facilitate installation by operators. A thermometer can also be set on the hot air return pipe to detect the temperature of the recovered hot air in real time.

[0093] In order to realize the on-off of the exhaust gas, a butterfly valve 10 may be further provided in the exhaust gas inlet pipe to realize the on-off of the exhaust gas, thereby enabling the operator to conveniently perform maintenance and other operations on the heat recovery device.

[0094] Preferably, in the heat recovery device of this embodiment, an exhaust gas output pipe 11 is provided at the other end of the outer tube body, one end of the exhaust gas output pipe is fixedly connected to the outer tube body and communicated with the outer tube body, and the exhaust gas output pipe is also communicated with the exhaust gas collecting pipe 12.

[0095] The exhaust gas output pipe is provided to output the exhaust gas to the exhaust gas collecting pipe. The exhaust gas collecting pipe is provided to collect the exhaust gas outputted from the outer pipe body and the exhaust gas output pipe, and transmit it to the exhaust gas treatment devices such as the range hood and the cooling tower at the far end.

[0096] At the same time, the exhaust gas collection pipe can connect several spiral heat recovery components to form a combined heat recovery device, thereby improving the overall exhaust gas treatment capacity of the device.

[0097] The exhaust gas collecting pipe and the exhaust gas output pipe can be cross-arranged and communicated with each other.

[0098] Preferably, in the heat energy recovery device of this embodiment, a lifting door assembly is provided at the other end of the exhaust gas output pipe, the lifting door assembly includes a lifting door 13 arranged at the end of the exhaust gas output pipe and a lifting driver 14 for driving the lifting door to rise and fall, and a walking platform 15 extending from the lifting door to the spiral heat exchange tube is provided in the exhaust gas output pipe.

[0099] The setting of the lifting door realizes the opening and closing of the exhaust gas output pipe, so that the cleaning robot can enter the interior of the outer tube body through the exhaust gas output pipe to clean the interior thereof.

[0100] The arrangement of the walking platform facilitates the cleaning robot to walk to the spiral heat exchange tube through the walking platform, thereby cleaning the spiral heat exchange tube.

[0101] Among them, the lifting drive is a linear displacement drive device such as a cylinder or an electric cylinder, which can drive the lifting door to rise and fall, thereby opening or closing the port of the exhaust gas output pipe.

[0102] Specifically, a door frame 16 is fixedly provided at the outer end of the exhaust gas output pipe, and cylinders 17 are respectively provided on both sides of the exhaust gas output pipe. The cylinder body of the cylinder is fixedly provided on the door frame, and the lever of the cylinder is connected to the lifting door, and the lifting door is provided in the sliding groove of the door frame.

[0103] When cleaning is required, the piston rod of the cylinder pushes the lifting door up until the port of the exhaust gas output pipe is fully opened. Then the cleaning robot can enter the exhaust gas output pipe through the port of the exhaust gas output pipe and walk along the walking platform inside the pipe to the spiral heat exchange pipe. After that, the cleaning robot can walk directly on the spiral heat exchange pipe. During the walking process, the cleaning robot can clean the inside of the pipe.

[0104] Preferably, the cleaning robot is a crawler-type cleaning robot, which can conveniently walk on the spiral heat exchange tube, and its inner cavity can be connected to high-pressure liquid through a pipeline, so that it can perform high-pressure cleaning on the inside of the outer tube body through a spray gun.

[0105] After cleaning is completed, the cleaning robot and the lifting door are reset to close the port of the exhaust gas output pipe to prevent exhaust gas leakage.

[0106] Preferably, in the heat recovery device of this embodiment, the exhaust gas collecting pipes of several spiral heat recovery components are connected end to end in sequence, and one of the exhaust gas collecting pipes is connected to the cooling tower through a pipeline.

[0107] The exhaust gas collecting pipes of each spiral heat recovery component are connected end to end so that each exhaust gas collecting pipe can be connected to form an integrated exhaust gas collecting device to centrally collect and process the exhaust gas discharged by each spiral heat recovery component.

[0108] Among them, the exhaust gas collection pipe at the head end is directly closed, and the exhaust gas collection pipe at the tail end can be connected to exhaust gas treatment devices such as cooling towers through pipelines.

[0109] Preferably, in the heat recovery device of this embodiment, the blower is arranged on the oven 18 of the setting machine, and the air outlet of the blower is also connected to the burner through a pipeline.

[0110] This arrangement enables the use of the blower on the shaping machine and the blower on the spiral heat recovery component, so that the heat recovery device does not need to have a separate blower for the spiral heat recovery component, thereby reducing equipment costs and facilitating installation.

[0111] To facilitate installation, the air inlet side of the blower housing is provided with an inlet for connecting to the hot air return pipe to achieve hot air return, and the air outlet side of the blower housing is provided with an air outlet for connecting to the burner to provide high-temperature fresh air for the burner. Its specific structure is conventional technology and will not be repeated here.

[0112] The blower and the burner can be arranged outside the oven of the setting machine. The blower is a combustion-supporting blower of the burner and can be directly arranged on the outer wall of the oven.

[0113] Preferably, in the heat recovery device of this embodiment, the spiral heat recovery component is installed above the oven of the shaping machine, and the bottom end of the exhaust gas inlet pipe is arranged on the top wall of the oven and connected to the exhaust gas outlet of the oven.

[0114] This setting realizes the heat recovery of the spiral heat recovery component and the reuse function of the exhaust gas emission of the setting machine. The operator can realize the heat recovery device by modifying the existing setting machine flue, thereby reducing costs.

[0115] Preferably, in order to facilitate the cleaning of the heat recovery device, a plurality of workbenches 19 are provided on the top wall of the oven of the shaping machine, and a cleaning robot 20 is provided on the workbench. The workbench is located on the outside of the lifting door and is connected to the port of the exhaust gas output pipe. When working, when the lifting door is opened, the cleaning robot can enter the exhaust gas output pipe through the door frame, and walk along the walking platform in the exhaust gas output pipe to the spiral heat exchange tube, thereby cleaning the inside of the outer tube body.

[0116] The above are only preferred implementations of the utility model, which are used to assist those skilled in the art to implement the corresponding technical solutions, and are not used to limit the scope of protection of the utility model. The scope of protection of the utility model is defined by the attached claims. It should be pointed out that for ordinary technicians in this field, on the basis of the technical solution of the utility model, several equivalent improvements and variations can be made, and these improvements and variations should also be regarded as the scope of protection of the utility model. At the same time, it should be understood that although this specification is described in accordance with the above-mentioned implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions of each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat recovery device, comprising a plurality of spiral heat recovery components, characterized in that: The spiral heat energy recovery component comprises an outer tube body (1) with openings at both ends, and at least two spiral heat exchange tubes (2) are arranged in the inner cavity of the outer tube body. The spiral heat energy recovery component also comprises a blower (3), one end of the two spiral heat exchange tubes are connected to one end of the blower through a pipeline, and the other end of the spiral heat exchange tube is connected to the atmosphere or the oven of the shaping machine.

2. The heat recovery device according to claim 1, characterized in that: There are two spiral heat exchange tubes, and one of the spiral heat exchange tubes is wound around the outside of the other spiral heat exchange tube.

3. The heat recovery device according to claim 1, characterized in that: A door hole is provided on the tube wall of the outer tube body, and a closing door (5) is provided at the door hole, one side of which is hinged to the outer tube body.

4. The heat recovery device according to claim 1, characterized in that: A sewage outlet (7) is also provided on the tube wall of the outer tube body.

5. The heat recovery device according to claim 1, characterized in that: It also includes an exhaust gas inlet pipe (8) and a hot air return pipe (9), wherein the exhaust gas inlet pipe is arranged at one end of the outer tube body and is connected to the outer tube body, one end of the spiral heat exchange pipe is fixedly arranged on the outer tube body and is connected to the atmosphere, the other end of the spiral heat exchange pipe is connected to one end of the hot air return pipe through a pipeline, and the other end of the hot air return pipe is connected to one end of the blower.

6. The heat recovery device according to claim 5, characterized in that: The other end of the outer tube body is provided with an exhaust gas output pipe (11), one end of the exhaust gas output pipe is fixedly connected to the outer tube body and communicates with the outer tube body, and the exhaust gas output pipe is also communicated with the exhaust gas collection pipe (12).

7. The heat recovery device according to claim 6, characterized in that: The other end of the exhaust gas output pipe is provided with a lifting door assembly, the lifting door assembly comprising a lifting door (13) provided at the end of the exhaust gas output pipe and a lifting driver (14) for driving the lifting door to move up and down, and a walking platform (15) extending from the lifting door to the spiral heat exchange tube is provided in the exhaust gas output pipe.

8. The heat recovery device according to claim 6, characterized in that: The exhaust gas collecting pipes of several spiral heat recovery components are connected end to end in sequence, and one of the exhaust gas collecting pipes is connected to the cooling tower through a pipeline.

9. The heat recovery device according to claim 6, characterized in that: The blower is arranged on the oven (18) of the setting machine, and the air outlet of the blower is also connected to the burner through a pipeline.

10. The heat recovery device according to claim 6, characterized in that: The spiral heat recovery assembly is installed above the oven of the setting machine, and the bottom end of the exhaust gas inlet pipe is arranged on the top wall of the oven and is connected to the exhaust gas outlet of the oven.

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