Heating furnace

Abstract

The utility model provides a heating furnace which comprises a heat preservation chamber, a transmission device and at least one combustion chamber, the combustion chamber is connected with the heat preservation chamber and used for heating gas and inputting the gas into the heat preservation chamber, the transmission device is used for conveying materials into and out of the heat preservation chamber, and the heating furnace further comprises a waste gas pipeline and a waste gas treatment device. The waste gas pipeline is connected between the heat preservation chamber and the waste gas treatment device, the waste gas treatment device comprises a purification bin and an adsorption material arranged in the purification bin, the gas inlet end of the purification bin is connected with the waste gas pipeline, and the adsorption material is located between the gas inlet end and the gas outlet end of the purification bin. According to the waste gas treatment device, the waste gas treatment device and the heat preservation chamber are directly arranged at the same position, the waste gas transportation distance is shortened, and therefore heat waste in the waste gas transportation process is reduced, the waste heat utilization rate is increased, and the fuel cost of a spraying production line is reduced; and meanwhile, the material cost of a long-distance pipeline and the material and land occupation cost of building waste gas treatment equipment at other places can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to curing oven technical field, specifically, relate to a heating furnace. BACKGROUND

[0002] Spraying process is often used in hardware, plastic, furniture, military, ship and other fields, usually adopts spraying equipment to spray coating to the surface of workpiece, plays the role of beautifying and protecting the product, spraying process operation efficiency is high and the workpiece surface is covered with uniform and reliable coating, is the most common coating method in present application.

[0003] With the progress of spraying technology, the spraying operation of large factory usually adopts automatic spraying equipment. After the workpiece completes the spraying process, the surface coating needs to be cured by high temperature baking. In order to save the transportation cost of workpiece and improve the manufacturing efficiency, the paint spraying room of large factory is often directly connected with high temperature curing oven to form a complete production line, and the workpiece to be baked after completing the spraying process and the workpiece cured by high temperature are transmitted into and out of the curing oven by using track transmission system. At the same time, in order to treat the waste gas and harmful gas generated by the combustion chamber of high temperature curing oven and generated during baking paint, the gas discharged from the curing oven also needs to be purified.

[0004] However, in the existing production line design, the waste gas discharged from the curing oven usually needs to be transported to another specially designed waste gas treatment equipment through a long pipeline. A large amount of heat will be inevitably lost during the pipeline transmission process, and at the same time, the overall land occupation of the production line will be large, resulting in high fuel cost and equipment material cost.

[0005] Therefore, how to reduce the fuel and material cost of spraying production line has become a technical problem to be solved in the field. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving one of the technical problems in the related art to some extent. Therefore, the utility model provides a heating furnace, wherein the waste gas treatment device and the heat preservation chamber are arranged at one place, which can reduce the heat waste during the waste gas transportation process, reduce the fuel cost of spraying production line, and save the material cost and equipment land occupation cost of pipeline.

[0007] In order to achieve the above object, the utility model provides a heating furnace, including heat preservation room, transmission device and at least one combustion chamber, the combustion chamber with the heat preservation room is connected, and is used for heating gas and inputting gas in the heat preservation room, the transmission device is used for transmitting material into and out of the heat preservation room, the heating furnace still includes waste gas pipeline and waste gas treatment device, the waste gas treatment device with the heat preservation room fixed connection, the waste gas pipeline is connected between the heat preservation room and the waste gas treatment device, the waste gas treatment device includes the purification bin and the adsorbing material of setting in the purification bin, the air inlet end of the purification bin is connected with the waste gas pipeline, and the adsorbing material is located between the air inlet end and the exhaust end of the purification bin.

[0008] Optionally, the waste gas treatment device further comprises a plurality of adsorption fixing nets, and the plurality of adsorption fixing nets are arranged at intervals.

[0009] Optionally, the adsorption fixing nets are vertically arranged.

[0010] Optionally, the adsorption fixing nets are parallel to the gas flow direction.

[0011] Optionally, the adsorbing material comprises a plurality of activated carbon particles.

[0012] Optionally, the waste gas treatment device further comprises a plurality of air extraction cylinders and a plurality of spraying devices, the air extraction cylinders are arranged in the purification bin, the air extraction cylinders can extract the gas received by the air inlet end of the purification bin through the air extraction ports at the bottom of the air extraction cylinders and discharge the gas through the exhaust ports at the top of the air extraction cylinders, and the spraying devices are arranged in the air extraction cylinders and can spray cooling liquid into the air extraction cylinders.

[0013] Optionally, the diameter of the bottom end of the air extraction cylinder gradually decreases from top to bottom.

[0014] Optionally, the waste gas treatment device further comprises a spraying circulation pipeline and a water tank, the water tank is arranged below the air extraction cylinders, and the spraying circulation pipeline can extract the cooling liquid in the water tank and deliver the cooling liquid to the spraying devices.

[0015] Optionally, the plurality of air extraction cylinders comprise at least one first air extraction cylinder and at least one second air extraction cylinder, the air extraction port of the first air extraction cylinder is communicated with the air inlet end of the purification bin, and the exhaust port of the first air extraction cylinder is communicated with the air extraction port of the second air extraction cylinder.

[0016] Optionally, a partition is arranged in the purification bin, and the partition separates a gas buffer cavity at the exhaust port of the first air extraction cylinder; the waste gas treatment device further comprises a first air extraction pipe and a second air extraction pipe, the first air extraction pipe is connected between the air inlet end of the purification bin and the air extraction port of the first air extraction cylinder, and the second air extraction pipe is connected between the gas buffer cavity and the air extraction port of the second air extraction cylinder.

[0017] Optionally, the plurality of air extraction cylinders comprise a first air extraction cylinder arranged in pairs and a second air extraction cylinder arranged in pairs.

[0018] Optionally, the waste gas treatment device further comprises a water blocking device, the water blocking device is arranged at the exhaust port of the second air extraction cylinder, and can absorb water in the gas discharged by the second air extraction cylinder.

[0019] Optionally, the water blocking device comprises a plurality of dry fixed nets arranged in a horizontal stack, and water blocking substances are arranged between the dry fixed nets.

[0020] Optionally, the water blocking substances are glue flowers.

[0021] Optionally, the waste gas treatment device further comprises a plurality of filter inclined plates, and the filter inclined plates are arranged between the air extraction cylinders and the adsorption materials.

[0022] Optionally, the water blocking device is provided with a guide bent plate on the side of the filter inclined plate.

[0023] Optionally, the waste gas treatment device further comprises a gas collecting fan, the gas collecting fan is arranged between the adsorption materials and the exhaust end of the purification bin, and is used for extracting the gas in the purification bin to the exhaust end.

[0024] Optionally, the purification bin has a maintenance door on the side corresponding to the gas collecting fan.

[0025] In the heating furnace provided by the utility model, the waste gas treatment device is directly arranged with the heat preservation chamber, the waste gas in the heat preservation chamber directly flows into the waste gas treatment device beside the heat preservation chamber through the waste gas pipeline, and is purified by the adsorption material (such as activated carbon) in the waste gas treatment device, compared with the scheme that the waste gas is transported to the waste gas treatment equipment far away in the prior art, the utility model shortens the waste gas transportation distance, thereby reducing the heat waste in the waste gas transportation process, improving the waste heat utilization rate, and further reducing the fuel cost of the spraying production line, and the material cost of the long-distance pipeline and the material and land cost of constructing the waste gas treatment equipment elsewhere can also be saved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The utility model will be further described in connection with the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the heating furnace provided in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the waste gas treatment device in the heating furnace provided in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the waste gas treatment device in the heating furnace provided in this embodiment of the utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10 Insulation chamber; 20 Combustion chamber; 30 Exhaust gas pipeline; 100 Exhaust gas treatment device; 110 Purification chamber; 120 Adsorption fixing net; 121 Adsorption material; 130 Extraction cylinder; 131 First extraction cylinder; 132 Second extraction cylinder; 133 First extraction pipe; 134 Second extraction pipe; 140 Water tank; 150 Water blocker; 151 Guide bend plate; 160 Filter inclined plate; 170 Gas collecting fan; 180 Maintenance door. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0033] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0034] To solve the above-mentioned technical problems, this utility model provides a heating furnace, such as... Figure 1 As shown, the heating furnace includes a heat preservation chamber 10, a transmission device, and at least one combustion chamber 20. The combustion chamber 20 is connected to the heat preservation chamber 10 and is used to heat gas and input the gas into the heat preservation chamber 10. The transmission device is used to transfer materials into and out of the heat preservation chamber 10. The heating furnace also includes an exhaust gas pipeline 30 and an exhaust gas treatment device 100. The exhaust gas treatment device 100 is fixedly connected to the heat preservation chamber 10. The exhaust gas pipeline 30 is connected between the heat preservation chamber 10 and the exhaust gas treatment device 100. The exhaust gas treatment device 100 includes a purification chamber 110 and an adsorbent material 121 disposed in the purification chamber 110. The air inlet a of the purification chamber 110 is connected to the exhaust gas pipeline 30. The adsorbent material 121 is located between the air inlet a and the exhaust b of the purification chamber 110.

[0035] It can be understood that the combustion chamber 20 is used for inputting high-temperature gas into the heat preservation chamber 10 to maintain the temperature in the heat preservation chamber 10, and the heat preservation chamber 10 is used for heating the workpiece (for example, the kitchenware to be heated and solidified after being painted) transmitted by the transmission device by using the high temperature inside, and the exhaust gas discharged from the heat preservation chamber 10 is transported to the exhaust gas treatment device 100 for purification.

[0036] In the heating furnace provided by the utility model, the exhaust gas treatment device 100 is directly arranged with the heat preservation chamber 10, the exhaust gas in the heat preservation chamber 10 directly flows into the exhaust gas treatment device 100 beside the heat preservation chamber 10 through the exhaust gas pipeline 30 and is subjected to online purification treatment by using the adsorption material 121 (for example, activated carbon) in the exhaust gas treatment device 100, compared with the scheme that the exhaust gas is transported to the exhaust gas treatment equipment which is far away in the prior art, the utility model shortens the exhaust gas transportation distance, thereby reducing the heat waste in the exhaust gas transportation process, improving the waste heat utilization rate, further reducing the fuel cost of the spraying production line, and simultaneously saving the material cost of the long-distance pipeline and the material and land cost of constructing the exhaust gas treatment equipment elsewhere.

[0037] As an optional embodiment of the utility model, as shown in Figure 1 , the exhaust gas treatment device 100 is arranged above the heat preservation chamber 10.

[0038] As an optional embodiment of the utility model, as shown in Figure 2 , Figure 3 , the exhaust gas treatment device 100 further comprises a plurality of adsorption fixing nets 120, the plurality of adsorption fixing nets 120 are arranged at intervals, and the adsorption material 121 is fixed between adjacent adsorption fixing nets 120.

[0039] As an optional embodiment of the utility model, as shown in Figure 2 , Figure 3 , the adsorption fixing net 120 is vertically arranged.

[0040] As an optional embodiment of the utility model, as shown in Figure 2 , Figure 3 , the adsorption fixing net 120 is parallel to the gas flow direction (that is, the direction from the gas inlet end a side to the gas outlet end b side).

[0041] As an optional embodiment of the utility model, the adsorption material 121 comprises a plurality of activated carbon particles.

[0042] Optionally, the activated carbon particles are spherical, so that a large number of gaps can be formed between the activated carbon particles, and the surface of the activated carbon particles can be fully contacted with the gas.

[0043] As an optional embodiment of the utility model, as shown in Figure 2 , Figure 3As shown, the waste gas treatment device 100 further comprises a plurality of suction cylinders 130 and a plurality of spraying devices (not shown in the figure), the suction cylinders 130 are arranged in the purification bin 110, the suction cylinders 130 can extract the gas received by the gas inlet end a of the purification bin 110 through the suction port at the bottom thereof, and discharge the gas through the exhaust port at the top thereof, and the spraying devices are arranged in the suction cylinders 130 and can spray the cooling liquid into the suction cylinders 130.

[0044] In the embodiment of the utility model, the waste gas treatment device 100 further comprises a suction cylinder 130 and a spraying device arranged in the suction cylinder 130, the waste gas enters the suction cylinder 130 through the suction port at the bottom thereof and flows upward, and the spraying device sprays liquid (for example, water) into the suction cylinder 130, so that the liquid fully contacts the waste gas in the suction cylinder 130 and absorbs the harmful substances and dust in the waste gas, and the purified gas is discharged from the top of the suction cylinder 130, thereby further improving the waste gas purification efficiency.

[0045] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The diameter of the bottom end of the suction cylinder 130 gradually decreases from top to bottom, forming a funnel-shaped structure, so as to reduce the splashing area when the liquid drops.

[0046] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The waste gas treatment device 100 further comprises a spraying circulation pipeline (not shown in the figure) and a water tank 140, the water tank 140 is arranged below the suction cylinder 130, the spraying circulation pipeline can extract the cooling liquid in the water tank 140 and deliver it to the spraying device to form a cooling liquid circulation.

[0047] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The plurality of suction cylinders 130 comprise at least one first suction cylinder 131 and at least one second suction cylinder 132, the suction port of the first suction cylinder 131 communicates with the gas inlet end a of the purification bin 110, and the exhaust port of the first suction cylinder 131 communicates with the suction port of the second suction cylinder 132.

[0048] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 A partition is arranged in the purification bin 110, the partition isolates to form a gas buffer cavity at the exhaust port of the first suction cylinder 131, the waste gas treatment device 100 further comprises a first suction pipe 133 and a second suction pipe 134, the first suction pipe 133 is connected between the gas inlet end a of the purification bin 110 and the suction port of the first suction cylinder 131, and the second suction pipe 134 is connected between the gas buffer cavity and the suction port of the second suction cylinder 132.

[0049] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The plurality of air extraction cylinders 130 include a pair of first air extraction cylinders 131 and a pair of second air extraction cylinders 132.

[0050] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The exhaust treatment device 100 further includes a water blocking device 150, which is arranged at the exhaust port of the second air extraction cylinder 132 and can block the water in the gas discharged by the second air extraction cylinder 132, so as to reduce the water delivered to the downstream filtering inclined plate 160, adsorption material 121 and other structures, keep the downstream purification structure dry, and further ensure the purification effect.

[0051] As an optional embodiment of the utility model, the water blocking device 150 includes a plurality of dry fixed nets arranged in a horizontal stack, and a water blocking substance is arranged between the dry fixed nets.

[0052] Optionally, the water blocking substance can be a glue flower.

[0053] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The exhaust treatment device 100 further includes a plurality of filtering inclined plates 160, which are arranged between the air extraction cylinder 130 and the adsorption material 121, so as to further filter out the dust particles in the exhaust gas by using the gap structure of the filtering inclined plate 160.

[0054] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The water blocking device 150 is provided with a guide bent plate 151 on the side facing the filtering inclined plate 160, which is used to guide the gas discharged above the water blocking device 150 to flow obliquely downward to the position of the filtering inclined plate 160.

[0055] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The exhaust treatment device 100 further includes a gas collecting fan 170, which is arranged between the adsorption material 121 and the exhaust end b of the purification bin 110 and is used to extract the gas in the purification bin 110 to the exhaust end b.

[0056] As an optional embodiment of the utility model, as shown in Figure 2 、 Figure 3 The purification bin 110 has a maintenance door 180 on the side corresponding to the gas collecting fan 170, so that the operator can open the maintenance door 180 and maintain the equipment such as the gas collecting fan 170.

[0057] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, and the skilled in the art should understand that the present application includes but is not limited to the content described in the drawings and the above specific implementation. Any modification not deviating from the function and structural principle of the present application will be included in the scope of the claims.

Claims

1. A heating furnace, comprising a heat preservation chamber (10), a conveying device, and at least one combustion chamber (20), said combustion chamber (20) being connected to the heat preservation chamber (10) and used for heating gas and inputting the gas into the heat preservation chamber (10), said conveying device being used for transferring material into and out of the heat preservation chamber (10), characterized in that, The heating furnace also includes a waste gas pipeline (30) and a waste gas treatment device (100). The waste gas treatment device (100) is fixedly connected to the insulation chamber (10). The waste gas pipeline (30) is connected between the insulation chamber (10) and the waste gas treatment device (100). The waste gas treatment device (100) includes a purification chamber (110) and an adsorbent material (121) disposed in the purification chamber (110). The air inlet end of the purification chamber (110) is connected to the waste gas pipeline (30). The adsorbent material (121) is located between the air inlet end and the exhaust end of the purification chamber (110).

2. The heating furnace according to claim 1, characterized in that, The waste gas treatment device (100) also includes a plurality of adsorption fixing nets (120), the plurality of adsorption fixing nets (120) are arranged at intervals, and the adsorption material (121) is fixed between adjacent adsorption fixing nets (120).

3. The heating furnace according to claim 2, characterized in that, The adsorbent material (121) comprises multiple activated carbon particles.

4. The heating furnace according to claim 1, characterized in that, The exhaust gas treatment device (100) also includes multiple extraction cylinders (130) and multiple spray devices. The extraction cylinders (130) are located inside the purification chamber (110). The extraction cylinders (130) can draw in the gas received by the air inlet of the purification chamber (110) through the extraction port at its bottom and discharge the gas through the exhaust port at its top. The spray devices are located in the extraction cylinders (130) and can spray coolant into the extraction cylinders (130).

5. The heating furnace according to claim 4, characterized in that, The exhaust gas treatment device (100) also includes a spray circulation pipeline and a water tank (140). The water tank (140) is located below the exhaust cylinder (130). The spray circulation pipeline can draw coolant from the water tank (140) and transport it to the spray device.

6. The heating furnace according to claim 4, characterized in that, The plurality of suction cylinders (130) include at least one first suction cylinder (131) and at least one second suction cylinder (132), wherein the suction port of the first suction cylinder (131) is connected to the air inlet of the purification chamber (110), and the exhaust port of the first suction cylinder (131) is connected to the suction port of the second suction cylinder (132).

7. The heating furnace according to claim 6, characterized in that, The plurality of said vacuum tubes (130) include a first vacuum tube (131) and a second vacuum tube (132) arranged in pairs.

8. The heating furnace according to claim 6, characterized in that, The exhaust gas treatment device (100) further includes a water blocker (150), which is located at the exhaust port of the second exhaust cylinder (132) and can block moisture in the gas discharged from the second exhaust cylinder (132).

9. The heating furnace according to claim 4, characterized in that, The waste gas treatment device (100) also includes a plurality of filter inclined plates (160), which are disposed between the air extraction cylinder (130) and the adsorption material (121).

10. The heating furnace according to any one of claims 1 to 9, characterized in that, The waste gas treatment device (100) further includes a gas collecting fan (170), which is disposed between the adsorbent material (121) and the exhaust end of the purification chamber (110), and is used to extract the gas in the purification chamber (110) to the exhaust end.

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