Rock wool curing oven

Abstract

The utility model relates to a rock wool curing oven which comprises a shell, a dispersion heating system, a gas purification system, an air draft mechanism and a transmission device. The dispersion heating systems are arranged in the shell and are arranged on the upper portion and the lower portion of the rock wool respectively, each dispersion heating system is composed of a heat dissipation plate and a heating pipe, and the heat dissipation plates are arranged between the rock wool and the heating pipes; the gas purification systems are located on the two sides of the shell, one end of each gas purification system is connected to the ventilation cover, the other end of each gas purification system is connected with the ventilation mechanism through the exhaust pipe, and gas is filtered through the dust chamber and conveyed into the rock wool melting electric furnace through the ventilation pipes to be burnt at high temperature. The device has the advantages of low energy consumption, accurate temperature control, no harmful tail gas emission, high dust removal automation degree and simplicity in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of curing furnaces, in particular to a rock wool curing furnace. Background Art

[0002] The curing furnace is one of the important equipment in the rock wool production process. The rock wool felt produced after spraying glue in the upstream process of the curing furnace has a three-dimensional overlapping structure. The overlap between the rock wool fibers has almost no strength, so it needs to enter the curing furnace and be baked to generate strength. The sprayed glue often uses thermosetting phenolic resin. Therefore, during the heating process of the curing furnace, the rock wool felt, in addition to the short rock wool fibers and dust generated by itself, also has free formaldehyde and free phenol generated by the phenolic resin during the heating process, which will pollute the environment and need to be treated.

[0003] Domestic rock wool curing furnaces all use rock wool board dry filtration to treat exhaust gas, and the heat source uses natural gas, coal gas and other combustible gases. In the production process, in order to achieve a good curing effect, the hot air volume is often increased. The disadvantage is that the energy consumption is good, the gas flow field in the curing furnace is chaotic, the temperature in different parts fluctuates greatly, the curing effect is uneven, and the exhaust volume increases, which brings higher operating costs and unnecessary economic costs to the enterprise.

[0004] In addition, in order to meet the needs of enterprises during the design of rock wool curing furnaces, the hot air circulation fans that come with the curing furnaces often seriously exceed the parameters such as the air volume and air pressure required by the design, resulting in serious air leakage in the curing furnaces during use. In order to achieve the required degree of curing of rock wool, most of the circulating fans of manufacturers are seriously overloaded. Otherwise, the rock wool boards will be unevenly cured and defective products will appear, and a relatively large amount of phenolic resin will enter the exhaust gas, increasing the company's exhaust gas treatment costs. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in view of the current situation that the existing rock wool curing furnace has large exhaust gas generation, high energy consumption, large temperature fluctuation in the furnace resulting in uneven curing effect and high operating cost, a rock wool curing furnace is proposed.

[0006] In order to solve the above problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] A rock wool curing furnace comprises a shell, a diffusion heating system, a gas purification system, an exhaust mechanism, and a transmission device; the diffusion heating system is inside the shell and is respectively arranged on the upper and lower parts of the rock wool;

[0008] The shell is composed of four layers, from inside to outside, inner insulation layer, middle insulation layer, outer insulation layer, and steel shell. The thickness of the inner insulation layer is 25-40mm, the thickness of the middle insulation layer is 40-50mm, and the thickness of the outer insulation layer is 40-50mm.

[0009] The diffuse heating system consists of a heat sink and a heating tube. The heat sink is located between the rock wool and the heating tube.

[0010] The gas purification system is located on both sides of the shell, one end is connected to the ventilation hood, and the other end is connected to the exhaust mechanism through the exhaust pipe, and the gas is filtered through the dust removal chamber;

[0011] There is a fan in the exhaust mechanism; a ventilation pipe is provided on the main pipe between the exhaust mechanism and the air inlet switch, and a ventilation pipe switch is provided on the ventilation pipe;

[0012] The transmission device consists of a transmission motor, a rotating roller and a transmission belt. The transmission belt rotates along the rotating roller, and the rock wool is transported on the transmission belt.

[0013] The ventilation pipe sends the gas to the rock wool melting furnace for high-temperature combustion.

[0014] The dust removal chamber comprises a filter screen, an automatic dust removal valve, a dust removal trough, and a dust discharge switch, and the filter screen has four layers.

[0015] The air intake hood is divided into 6 groups, including 3 groups on the upper part of the shell and 3 groups on the lower part of the shell; the ventilation hood is divided into 2 groups, including 1 group on one side of the shell and 1 group on the other side of the shell.

[0016] The heat dissipation plate is evenly provided with heat dissipation holes, the heat dissipation holes are circular, and the shortest distance between adjacent heat dissipation holes is the same as the diameter of the heat dissipation holes.

[0017] The heating tube body is a quartz tube, and the heating element is braided carbon fiber.

[0018] The gas flow rate controlled by the air inlet switch is 0.6-1.2 m / s.

[0019] The gas flow rate controlled by the ventilation pipe switch is 0.2-0.3 m / s.

[0020] The utility model has an inner thermal insulation layer made of ceramic fiber material, a middle thermal insulation layer made of hollow alumina, and an outer thermal insulation layer made of high-density thermal insulation cotton.

[0021] The utility model has the advantages of efficient and uniform heating, energy saving and environmental protection, safety and reliability, and easy control. The diffusion heating system can achieve efficient and uniform heating effects, and can quickly and evenly distribute heat in the target area, avoiding the problems of local overheating or uneven temperature that may occur in traditional flame heating methods. At the same time, the heating tube controller is designed with safety protection mechanisms, such as overheating protection, overcurrent protection, etc., which can effectively ensure the stable operation of the system and the safety of users. The heating element woven carbon fiber has good durability and stability, and can operate reliably for a long time. This heating method of the present application has high energy efficiency, can effectively utilize energy, and reduce energy waste. Due to its high efficiency and accuracy, it can also reduce environmental pollution and emissions. Finally, the diffusion heating system is equipped with an advanced control system, which can achieve precise temperature control and adjustment. The heating temperature and time can be set as needed during use. The system can automatically complete the heating process, which improves the convenience and flexibility of operation.

[0022] The electric heating tube of the utility model uses woven carbon fiber as the heating element, and has the characteristics of fast heating speed, small thermal hysteresis effect, efficient and uniform heating, long heat radiation transmission distance, fast heat exchange speed, etc. The electric heat conversion efficiency can exceed 98%. When the temperature starts to rise, the surface temperature can reach the set temperature in 5 seconds.

[0023] During the operation of the gas purification system of the utility model, the gas in the shell enters the dust removal chamber through the ventilation hood, and enters the exhaust pipe through 4 layers of filter screens. After the fiber dust filtered by the filter screens is accumulated at the lower part, the automatic dust collection valve is opened, and the dust enters the dust collection trough for collection. The dust discharge switch is opened regularly to transport the dust away for treatment.

[0024] The harmful gas of the utility model circulates between the shell and the dust removal chamber, which is beneficial to the recycling of high-temperature gas and thus reduces energy consumption. A small amount is sent to the rock wool melting furnace through the ventilation pipe and burned at high temperature. The shell is in a slightly negative pressure state during the entire operation process, thereby achieving harmless emission.

[0025] Compared with the prior art, the utility model has the advantages of low energy consumption, precise temperature control, no harmful exhaust gas emission, high degree of dust removal automation and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural cross-sectional view of the rock wool curing furnace of the utility model;

[0027] Figure 2 A cross-sectional view of the shell structure of the utility model;

[0028] Figure 3 A cross-sectional view of the structure of the gas purification system of the utility model;

[0029] Figure 4 A cross-sectional view of the heat dissipation plate structure of the utility model;

[0030] Figure 5 A cross-sectional view of the heating tube structure of the utility model;

[0031] In the figure:

[0032] Shell 1, inner insulation layer 101, middle insulation layer 102, outer insulation layer 103, steel shell 104, rotating roller 2, transmission belt 3, rock wool 4, heat dissipation plate 5, heat dissipation hole 501, heating tube 6, quartz tube 601, woven carbon fiber 602, transmission motor 7, dust removal chamber 8, exhaust pipe 801, exhaust pipe 802, filter 803, automatic dust removal valve 804, dust removal groove 805, dust discharge switch 806, exhaust mechanism 9, fan 10, ventilation pipe 11, air intake switch 12, ventilation pipe switch 13, air intake hood 14, ventilation hood 15. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a rock wool curing furnace includes a shell 1, a diffusion heating system, a gas purification system, an exhaust mechanism 9, and a transmission device; the diffusion heating system is inside the shell 1 and is respectively arranged on the upper and lower parts of the rock wool 4;

[0035] The shell 1 is composed of four layers, which are, from inside to outside, an inner insulation layer 101, a middle insulation layer 102, an outer insulation layer 103, and a steel shell 104. The thickness of the inner insulation layer 101 is 25 to 40 mm, the thickness of the middle insulation layer 102 is 40 to 50 mm, and the thickness of the outer insulation layer 103 is 40 to 50 mm.

[0036] The diffusion heating system is composed of a heat sink 5 and a heating tube 6, and the heat sink 5 is arranged between the rock wool 4 and the heating tube 6;

[0037] The gas purification system is located on both sides of the housing 1, one end of which is connected to the ventilation cover 15, and the other end is connected to the exhaust mechanism 9 through the exhaust pipe 802, and the gas is filtered through the dust removal chamber 8;

[0038] The exhaust mechanism 9 has a fan 10; a ventilation pipe 11 is provided on the main pipe between the exhaust mechanism 9 and the air inlet switch 12, and a ventilation pipe switch 13 is provided on the ventilation pipe 11;

[0039] The transmission device is composed of a transmission motor 7, a rotating roller 2 and a transmission belt 3. The transmission belt 3 rotates along the rotating roller 2, and the rock wool 4 is transported on the transmission belt 3.

[0040] The ventilation pipe 11 sends the gas to the rock wool melting furnace for high temperature combustion.

[0041] The dust removal chamber 8 comprises a filter 803, an automatic dust removal valve 804, a dust removal trough 805, and a dust discharge switch 806, and the filter 803 has four layers.

[0042] The air intake hood 14 is divided into 6 groups, including 3 groups on the upper part of the shell 1 and 3 groups on the lower part of the shell 1; the ventilation hood 15 is divided into 2 groups, including 1 group on one side of the shell 1 and 1 group on the other side of the shell 1.

[0043] The heat dissipation holes 501 are evenly arranged on the heat dissipation plate 5 . The heat dissipation holes 501 are circular, and the shortest distance between adjacent heat dissipation holes 501 is the same as the diameter of the heat dissipation holes 501 .

[0044] The heating tube 6 is made of a quartz tube 601 , and the heating element is made of braided carbon fiber 602 .

[0045] The gas flow rate controlled by the air inlet switch 12 is 0.8 m / s.

[0046] The gas flow rate controlled by the ventilation pipe switch 13 is 0.25 m / s.

[0047] The application process of the rock wool curing furnace of this embodiment is as follows:

[0048] During the production process, all equipment in the curing furnace is turned on, and the space inside the curing furnace is heated to the preset temperature through the heating tube. The rock wool enters the curing furnace with the transmission belt. Under the control of the diffusion heating system, the temperature inside the curing furnace remains consistent. The dust and resin flying dust generated by the rock wool enter the dust removal chamber through the ventilation hood and are filtered in the dust removal chamber. Most of the filtered gas enters the curing furnace again through the air intake hood, realizing the internal recycling of high-temperature gas and reducing energy consumption. A small amount is sent to the rock wool melting furnace through the ventilation pipe and burned at high temperature. During the entire operation process, the shell is in a slightly negative pressure state, thereby achieving harmless emissions.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A rock wool curing furnace, characterized in that: It includes a shell, a diffusion heating system, a gas purification system, an exhaust mechanism, and a transmission device; the diffusion heating system is inside the shell and is respectively arranged on the upper and lower parts of the rock wool; The shell is composed of four layers, from inside to outside, inner insulation layer, middle insulation layer, outer insulation layer, and steel shell. The thickness of the inner insulation layer is 25-40mm, the thickness of the middle insulation layer is 40-50mm, and the thickness of the outer insulation layer is 40-50mm. The diffuse heating system consists of a heat sink and a heating tube. The heat sink is located between the rock wool and the heating tube. The gas purification system is located on both sides of the shell, one end is connected to the ventilation hood, and the other end is connected to the exhaust mechanism through the exhaust pipe, and the gas is filtered through the dust removal chamber; There is a fan in the exhaust mechanism; a ventilation pipe is provided on the main pipe between the exhaust mechanism and the air inlet switch, and a ventilation pipe switch is provided on the ventilation pipe; The transmission device consists of a transmission motor, a rotating roller and a transmission belt. The transmission belt rotates along the rotating roller, and the rock wool is transported on the transmission belt. The ventilation pipe sends the gas to the rock wool melting furnace for high-temperature combustion.

2. A rock wool curing furnace as claimed in claim 1, characterized in that: The dust removal chamber comprises a filter screen, an automatic dust removal valve, a dust removal trough, and a dust discharge switch, and the filter screen has four layers.

3. A rock wool curing furnace as claimed in claim 1, characterized in that: The heat dissipation plate is evenly provided with heat dissipation holes, the heat dissipation holes are circular, and the shortest distance between adjacent heat dissipation holes is the same as the diameter of the heat dissipation holes.

4. A rock wool curing furnace as claimed in claim 1, characterized in that: The tube body of the heating tube is a quartz tube, and the heating element is braided carbon fiber.

5. A rock wool curing furnace as claimed in claim 1, characterized in that: The gas flow rate controlled by the air inlet switch is 0.6-1.2 m / s.

6. A rock wool curing furnace as claimed in claim 1, characterized in that: The gas flow rate controlled by the ventilation pipe switch is 0.2-0.3 m / s.

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