Energy-saving plasticizing oven heating device

Abstract

The utility model discloses an energy-saving plasticizing oven heating device which is characterized in that a combustion chamber is mounted on the bottom surface of a plasticizing oven, a heat exchange chamber is arranged on the right side of the combustion chamber, a combustor is arranged in the combustion chamber, the combustion chamber is connected with an air supply pipeline, an air feeder is mounted on a framework of the plasticizing oven, and an air inlet of the air feeder is communicated with the heat exchange chamber; an air supply outlet of the air feeder is connected with the air duct, the air duct is connected with a first air row and a second air row which are oppositely arranged up and down, a right-end air inlet of the first air row is connected with an upper air supply outlet of the air duct, and a right-end air inlet of the second air row is connected with a lower air supply outlet of the air duct. And a plurality of second air nozzles with upward air blowing openings are mounted on the second air row. The device is simple in structure and convenient to operate, hot air in the heat exchange chamber is fed into the first air row and the second air row through the air feeder, leather products are plasticized through the first air row and the second air row, the heat exchange efficiency is greatly improved, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of polymer material production technology, specifically relating to a multifunctional energy-saving plasticizing oven heating device for polyvinyl chloride products. Background Technology

[0002] Plasticizing ovens are essential equipment for manufacturing products such as PU / PVC artificial leather, PU synthetic leather, PVC flooring, PVC three-proof tarpaulin, PVC anti-slip mats, PVC fabric coatings, laminated leather (split-skin transfer-film leather or double-skin leather), and latex sponges. This project belongs to the "Large and Precision Rubber and Plastic Processing Equipment" in the fourth part "New Materials" (iii) "Polymer Materials" of the "National Key Supported High-tech Fields" document Guo Ke Fa Huo

[2016] No. 32, which is "New Processing Applications and Application Technologies of Polymer Materials".

[0003] The existing plasticizing oven frame is made of integral steel and transported as a whole. The insulation board cavity is filled with aluminum silicate fiber cotton. This fiber cotton is prone to shrinkage due to vibration, creating space within the insulation board cavity and affecting the insulation effect. During the operation of the PVC product production line, the products need to be heated. The existing heating method uses a kerosene boiler, with hot oil supplied and returned through pipelines to and from a heat exchanger. The heat generated in the heat exchanger enters the oven through a blower, hot air ducts, hot air exhaust, and nozzles, achieving hot air circulation. The heating method described in document ZL201410097846.1 also uses a kerosene boiler, with hot oil supplied and returned through pipelines to and from a heat exchanger. The heat generated in the heat exchanger enters the oven through a blower, hot air ducts, hot air exhaust, and nozzles, achieving hot air circulation. The invention patent mentioned above only applies to artificial leather and synthetic leather production lines. Therefore, there is a need for an energy-saving plasticizing oven heating device that is simple in structure, low in cost, clean in production, energy-saving, and has a wide range of applications. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an energy-saving plasticizing oven heating device that is simple in structure and low in cost.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an energy-saving plasticizing oven heating device, comprising a burner, a combustion chamber, a heat exchange chamber, a blower, and an air duct. The combustion chamber is installed on the bottom surface of the plasticizing oven, the heat exchange chamber is located on the right side of the combustion chamber, the burner is located in the combustion chamber, the combustion chamber is connected to a gas supply pipe, the blower is installed on the frame of the plasticizing oven, the air inlet of the blower is connected to the heat exchange chamber, the air outlet of the blower is connected to the air duct, and a first air duct and a second air duct arranged vertically opposite each other are connected to the air duct. The right air inlet of the first air duct is connected to the upper air outlet of the air duct, and the right air inlet of the second air duct is connected to the lower air outlet of the air duct. Several first air nozzles with downward-facing exhaust ports are installed on the first air duct, and several second air nozzles with upward-facing exhaust ports are installed on the second air duct.

[0006] Both the upper and lower air outlets are equipped with air volume adjustment devices.

[0007] The first and second air ducts have the same structure, both including a left closed section, a middle section and a right air supply section. The left closed section is closed at the left end and has a first flange at the right end. The middle section is open from left to right, with a second flange at the left end and a third flange at the right end. The right air supply section is open from left to right, with a fourth flange at the left end and a fifth flange at the right end.

[0008] The first air duct is equipped with a first pressure gauge, the second air duct is equipped with a second pressure gauge, and the air duct is equipped with a total pressure gauge.

[0009] The cross-sectional area of ​​the air inlet of the first air nozzle is larger than the cross-sectional area of ​​the air outlet. The cross-sectional area of ​​the air inlet of the second air nozzle is smaller than the cross-sectional area of ​​the air outlet. The cross-sectional area of ​​the air inlet of the second air nozzle is larger than the cross-sectional area of ​​the air inlet of the first air nozzle. The length direction of the air outlets of the first and second air nozzles is set along the front-to-back direction.

[0010] The gas supply pipeline has a natural gas storage tank connected to its inlet end and a combustion chamber connected to its outlet end.

[0011] The combustion chamber and heat exchange chamber are all equipped with heat insulation layers on their outer sides.

[0012] In practical use, this application first lays a heat insulation layer at the bottom of the plasticizing oven, then installs the combustion chamber and heat exchange chamber on the heat insulation layer, and then lays another heat insulation layer on top of the combustion chamber and heat exchange chamber to insulate them. Next, a blower is installed on the frame of the plasticizing oven, with the blower's inlet connected to the heat exchange chamber and its outlet connected to the air duct. The air duct is arranged vertically, with the upper air outlet connected to the right inlet of the first air duct and the lower air outlet connected to the right inlet of the second air duct. The first and second air ducts are arranged vertically opposite each other, with the first nozzle of the first air duct pointing downwards and the second nozzle of the second air duct pointing upwards. The width of the first nozzle is greater than that of the second nozzle, making the hot air blown from the first nozzle gentler than that from the second nozzle, which is beneficial for drying leather products. During the leather product manufacturing process, the leather products are dried between the first and second air ducts.

[0013] The burner of this application is located in a combustion chamber, which is connected to a gas supply pipeline. The inlet end of the gas supply pipeline is connected to a natural gas storage tank, and the outlet end of the gas supply pipeline is connected to the combustion chamber. A blower is installed on the frame of the plasticizing oven. The blower's inlet connects to a heat exchange chamber, and the blower's outlet connects to an air duct. The air duct has a first air intake and a second air intake arranged vertically opposite each other. The right inlet of the first air intake connects to the upper outlet of the air duct, and the right inlet of the second air intake connects to the lower outlet of the air duct. Several downward-facing first air nozzles are installed on the first air intake, and several upward-facing second air nozzles are installed on the second air intake. The gas supply pipeline delivers natural gas into the combustion chamber for combustion, replacing the original method of heating via a coal or oil boiler, effectively improving heat exchange efficiency.

[0014] This invention is applicable not only to artificial leather and synthetic leather products, but also expands its application scope; by replacing coal-fired oil boilers with natural gas heating, it achieves cleaner production, saves energy, and reduces production costs.

[0015] The cross-sectional area of ​​the air inlet of the first air nozzle in this application is larger than that of the air outlet, while the cross-sectional area of ​​the air inlet of the second air nozzle is smaller than that of the air outlet. This makes the airflow from the first air nozzle gentler and the airflow from the second air nozzle stronger. However, since the first air outlet is closer to the product and the second air outlet is farther away from the product, the airflow from the first air nozzle to the product is the same as that from the second air nozzle, ensuring that the product is subjected to uniform force.

[0016] In summary, this utility model has a simple structure and is easy to operate. By sending hot air from the heat exchange chamber into the first and second air ducts through a blower, the first and second air ducts plasticize the leather products, which greatly improves the heat exchange efficiency and reduces costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the second exhaust fan of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the first and second air nozzles of this utility model. Detailed Implementation

[0020] like Figures 1-3 As shown, this utility model discloses an energy-saving plasticizing oven heating device, comprising a burner 1, a combustion chamber 2, a heat exchange chamber 3, a blower 4, and an air duct 5. The combustion chamber 2 is installed on the bottom surface of the plasticizing oven 23, and the heat exchange chamber 3 is located to the right of the combustion chamber 2. The burner 1 is located inside the combustion chamber 2. Both the bottom and top of the combustion chamber 2 and the heat exchange chamber 3 are provided with heat insulation layers to maintain the temperature of the combustion chamber 2 and the heat exchange chamber 3. Combustion chamber 2 is connected to a gas supply pipe. A blower 4 is installed on the frame of the plasticizing oven 23. The air inlet of blower 4 connects to heat exchange chamber 3, and the air outlet of blower 4 connects to air duct 5. Air duct 5 has a first air intake 6 and a second air intake 7 arranged vertically opposite each other. The right air inlet of the first air intake 6 connects to the upper air outlet 11 of air duct 5, and the right air inlet of the second air intake 7 connects to the lower air outlet 12 of air duct 5. The first air intake 6 is equipped with several downward-facing first air nozzles 8, and the second air intake 7 is equipped with several upward-facing second air nozzles 9. Airflow regulating devices 10 are installed at both the upper air outlet 11 and the lower air outlet 12. Existing airflow regulating devices 10 can be used, typically adjusted by a handwheel driving a baffle plate. Airflow regulating devices 10 are existing technology and will not be described further here.

[0021] The first air duct 6 and the second air duct 7 have the same structure, both including a left closed section 13, a middle section 14 and a right air supply section 15. The left end of the left closed section 13 is closed, and the right end is provided with a first flange 16. The middle section 14 is open from left to right. The left end of the middle section 14 is provided with a second flange 17, and the right end of the middle section 14 is provided with a third flange 18. The right air supply section 15 is open from left to right. The left end of the right air supply section 15 is provided with a fourth flange 19, and the right end of the right air supply section 15 is provided with a fifth flange 20. The left closed section 13 is open at the right end and closed at the left end. It is connected to the middle section 14 through the first flange 16 and the second flange 17 at the left end of the middle section 14. The first flange 16 and the second flange 17 are provided with corresponding threaded holes and can be fixed by bolts and nuts. The middle section 14 is open from left to right. The left end is connected to the middle section 14 and the right end is connected to the right air supply section 15 through the third flange 18 and the fourth flange 19. Similarly, the third flange 18 and the fourth flange 19 are also provided with corresponding threaded holes and can be fixed by bolts and nuts. The left end of the right air supply section 15 is connected to the middle section 14 and the right end is connected to the air duct 5 through the fifth flange 20.

[0022] A first pressure gauge is installed on the first air duct 6, a second pressure gauge is installed on the second air duct 7, and a total pressure gauge is installed on the air duct 5. By setting the corresponding pressure gauges, the corresponding pressure values ​​can be obtained at any time, and the staff can adjust the air volume in a timely manner. The cross-sectional area of ​​the air inlet 24 of the first air nozzle 8 is larger than the cross-sectional area of ​​the air outlet 21, the cross-sectional area of ​​the air inlet 25 of the second air nozzle 9 is smaller than the cross-sectional area of ​​the air outlet 22, and the cross-sectional area of ​​the air inlet 25 of the second air nozzle 9 is larger than the cross-sectional area of ​​the air inlet 24 of the first air nozzle 8. The length direction of the air outlet 21 of the first air nozzle 8 and the air outlet 22 of the second air nozzle 9 is set along the front-to-back direction. This ensures that the air blown from top to bottom is gentler than the air blown from bottom to top, which can more effectively dry the product. Due to the presence of the plasticizing oven 23 frame, the frame beams obstruct the installation of the first air vent 6 and the second air vent 7, resulting in the first air nozzle 8 of the first air vent 6 being closer to the product and the second air nozzle 9 of the second air vent 7 being farther from the product. However, this application sets the cross-sectional area of ​​the air inlet of the first air nozzle 8 to be larger than the cross-sectional area of ​​the air outlet, and the cross-sectional area of ​​the air inlet of the second air nozzle 9 to be smaller than the cross-sectional area of ​​the air outlet. This makes the airflow from the first air nozzle 8 gentler and the airflow from the second air nozzle 9 stronger, thereby ensuring that the airflow from the first air nozzle 8 to the product is the same as the airflow from the second air nozzle 9, ensuring that the product is subjected to uniform force.

[0023] In practical use, this application first lays a heat insulation layer at the bottom of the plasticizing oven 23, then installs the combustion chamber 2 and heat exchange chamber 3 on the heat insulation layer, and then lays another heat insulation layer on top of and around the combustion chamber 2 and heat exchange chamber 3, so that the outer sides of the combustion chamber 2 and heat exchange chamber 3 are all covered with heat insulation layers to insulate the combustion chamber 2 and heat exchange chamber 3. Then, the blower 4 is installed on the frame of the plasticizing oven 23, with the air inlet of the blower 4 connected to the heat exchange chamber 3 and the air outlet of the blower 4 connected to the air duct 5. The air duct 5 is arranged vertically, with the upper air outlet of the air duct 5... 11 connects to the right air inlet of the first air duct 6, and 12 connects to the right air inlet of the second air duct 7. The first air duct 6 and the second air duct 7 are arranged vertically opposite each other. The first nozzle 8 of the first air duct 6 faces downward, and the second nozzle 9 of the second air duct 7 faces upward. The width of the nozzle 21 of the first nozzle 8 is greater than the width of the nozzle 22 of the second nozzle 9, making the hot air blown out by the first nozzle 8 gentler than the hot air blown out by the second nozzle 9, which is beneficial for drying leather products. During the production of leather products, the leather products are dried between the first air duct 6 and the second air duct 7. Both the first air duct 6 and the second air duct 7 are installed on the frame of the plasticizing oven 23.

[0024] The burner 1 of this application is installed inside the combustion chamber 2, which is connected to a gas supply pipe. The inlet end of the gas supply pipe is connected to a natural gas storage tank, and the outlet end of the gas supply pipe is connected to the combustion chamber 2. A blower 4 is installed on the frame of the plasticizing oven 23. The inlet of the blower 4 is connected to the heat exchange chamber 3, and the outlet of the blower 4 is connected to the air duct 5. The air duct 5 is connected to a first air intake 6 and a second air intake 7 arranged vertically opposite each other. The right-hand inlet of the first air intake 6 is connected to the upper outlet 11 of the air duct 5, and the right-hand inlet of the second air intake 7 is connected to the lower outlet 12 of the air duct 5. The first air intake 6 is equipped with several downward-facing first air nozzles 8, and the second air intake 7 is equipped with several upward-facing second air nozzles 9. The gas supply pipe delivers natural gas into the combustion chamber 2 for combustion, replacing the original heating method using a coal-fired or oil-fired boiler, effectively improving heat exchange efficiency. This utility model has a simple structure and is easy to operate. The hot air in the heat exchange chamber 3 is sent to the first air duct 6 and the second air duct 7 by the blower 4. The first air duct 6 and the second air duct 7 plasticize the leather products, which greatly improves the heat exchange efficiency and reduces the cost.

[0025] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. An energy-saving plasticizing oven heating device, characterized in that: The oven includes a burner, combustion chamber, heat exchange chamber, blower, and air duct. The combustion chamber is installed on the bottom surface of the plasticizing oven, and the heat exchange chamber is located to the right of the combustion chamber. The burner is located inside the combustion chamber and is connected to a gas supply pipe. The blower is installed on the frame of the plasticizing oven. The air inlet of the blower is connected to the heat exchange chamber, and the air outlet of the blower is connected to the air duct. The air duct has a first air row and a second air row arranged vertically opposite each other. The air inlet at the right end of the first air row is connected to the upper air outlet of the air duct, and the air inlet at the right end of the second air row is connected to the lower air outlet of the air duct. The first air row is equipped with several downward-facing first air nozzles, and the second air row is equipped with several upward-facing second air nozzles.

2. The energy-saving plasticizing oven heating device according to claim 1, characterized in that: Both the upper and lower air outlets are equipped with air volume adjustment devices.

3. The energy-saving plasticizing oven heating device according to claim 2, characterized in that: The first and second air ducts have the same structure, both including a left closed section, a middle section and a right air supply section. The left closed section is closed at the left end and has a first flange at the right end. The middle section is open from left to right, with a second flange at the left end and a third flange at the right end. The right air supply section is open from left to right, with a fourth flange at the left end and a fifth flange at the right end.

4. The energy-saving plasticizing oven heating device according to claim 3, characterized in that: The first air duct is equipped with a first pressure gauge, the second air duct is equipped with a second pressure gauge, and the air duct is equipped with a total pressure gauge.

5. The energy-saving plasticizing oven heating device according to claim 4, characterized in that: The cross-sectional area of ​​the air inlet of the first air nozzle is larger than the cross-sectional area of ​​the air outlet. The cross-sectional area of ​​the air inlet of the second air nozzle is smaller than the cross-sectional area of ​​the air outlet. The cross-sectional area of ​​the air inlet of the second air nozzle is larger than the cross-sectional area of ​​the air inlet of the first air nozzle. The length direction of the air outlets of the first and second air nozzles is set along the front-to-back direction.

6. The energy-saving plasticizing oven heating device according to claim 5, characterized in that: The gas supply pipeline has a natural gas storage tank connected to its inlet end and a combustion chamber connected to its outlet end.

7. The energy-saving plasticizing oven heating device according to claim 6, characterized in that: The combustion chamber and heat exchange chamber are all equipped with heat insulation layers on their outer sides.

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