Drying equipment with soaking circulation system

Abstract

The invention belongs to the technical field of drying, and discloses drying equipment with a soaking circulation system, which comprises a furnace body and the soaking circulation system. The furnace body comprises an upper heating space and a lower heating space, a product is arranged between the upper heating space and the lower heating space, and heat in the upper heating space and heat in the lower heating space are both used for heating the product; the soaking circulation system comprises a mixing pipeline, an upper flow suction pipeline, an upper flow blowing pipeline, a lower flow suction pipeline, a lower flow blowing pipeline and a power device; the upper flow suction pipeline and the lower flow suction pipeline are both communicated with the mixing pipeline; the power device is used for providing power for circulation of the fluid in the mixing pipeline, the upper flow suction pipeline and the upper flow blowing pipeline and used for providing power for circulation of the fluid in the mixing pipeline, the lower flow suction pipeline and the upper flow blowing pipeline. The heat difference of the two sides of the product in the thickness direction can be reduced, the drying effect of the two surfaces of the product is improved, and the product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of drying technology, and in particular to drying equipment with a heat equalization circulation system. Background Art

[0002] The insulating coating on the surface of oriented silicon steel mainly includes three categories: inorganic coating, organic coating and semi-inorganic coating. The coating on the surface of oriented silicon steel is usually dried in a drying furnace.

[0003] In the prior art, the drying furnace has an inner cavity, and the oriented silicon steel is unwound and rewound by the tension roller outside the entrance and exit of the drying furnace to achieve contactless passage through the drying furnace, and the inner wall of the drying furnace is provided with a burner. In order to ensure the drying effect of the upper and lower surfaces of the oriented silicon steel, the top wall and the bottom wall of the drying furnace are provided with burners. The oriented silicon steel is suspended in the drying furnace and heated by the smoke and infrared radiation generated by the combustion of the burner. In order to improve the heat utilization rate and ensure the thermal uniformity in the width direction of the furnace, the width of the oriented silicon steel is slightly different from the width of the drying furnace, so that the infrared radiation of the burner can completely cover the width of the oriented silicon steel, and there is no obvious temperature difference between the edge of the oriented silicon steel and the inner wall of the furnace. The oriented silicon steel divides the drying furnace into two drying spaces. The heat in the two drying spaces is usually not mixed. Affected by the external environment of the drying furnace (for example, the external airflow enters the furnace from the gaps on both sides of the furnace and the entrances and exits at both ends), the heat difference between the two drying spaces is large, resulting in inconsistent drying effects on the two surfaces of the oriented silicon steel, and there will be a problem that the coating on one surface of the oriented silicon steel is dried to the requirements, while the coating on the other surface is not completely dried, thereby affecting the quality of the oriented silicon steel.

[0004] Therefore, there is an urgent need for a drying device with a heat equalization circulation system to solve the above problems. Summary of the invention

[0005] The first object of the present invention is to provide a drying device with a heat equalization circulation system to solve the problem of large heat difference between the two sides of the product in the prior art.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] Drying equipment with a heat-saturating circulation system, including:

[0008] A furnace body, the furnace body comprising an upper heating space and a lower heating space, the product is arranged between the upper heating space and the lower heating space, and the heat in the upper heating space and the lower heating space are both used to heat the product;

[0009] A heat equalization circulation system comprises a mixing pipe, an upper suction flow pipe, an upper blowing flow pipe, a lower suction flow pipe, a lower blowing flow pipe and a power device; the upper suction flow pipe and the lower suction flow pipe are both connected to the mixing pipe; the upper suction flow pipe and the upper blowing flow pipe are both arranged in the upper heating space and are both connected to the upper heating space; the lower suction flow pipe and the lower blowing flow pipe are both arranged in the lower heating space and are both connected to the lower heating space; the power device is used to provide power for the circulation of fluid in the mixing pipe, the upper suction flow pipe and the upper blowing flow pipe, and is used to provide power for the circulation of fluid in the mixing pipe, the lower suction flow pipe and the upper blowing flow pipe.

[0010] Optionally, the upper suction flow duct and the upper blowing flow duct are both arranged on the inner top wall of the furnace body; the lower suction flow duct and the lower blowing flow duct are both arranged on the inner bottom wall of the furnace body.

[0011] Optionally, the upper suction flow pipe and the upper blowing flow pipe are arranged opposite to each other in the length direction of the furnace body, and both extend in the width direction of the furnace body;

[0012] And / or, the downward suction flow pipe and the downward blowing flow pipe are arranged opposite to each other in the length direction of the furnace body, and both extend in the width direction of the furnace body;

[0013] And / or, the upper suction flow pipe and the lower suction flow pipe are arranged opposite to each other in the height direction of the furnace body, and the upper blowing flow pipe and the lower blowing flow pipe are arranged opposite to each other in the height direction of the furnace body;

[0014] And / or, the upper suction flow duct and the lower blowing flow duct are arranged opposite to each other in the height direction of the furnace body, and the upper blowing flow duct and the lower suction flow duct are arranged opposite to each other in the height direction of the furnace body.

[0015] Optionally, the upper suction flow pipe and the lower suction flow pipe are both provided with a plurality of suction flow openings, and the upper blowing flow pipe and the lower blowing flow pipe are both provided with a plurality of blowing flow openings;

[0016] The sum of the flow areas of the multiple suction ports of the upper suction flow duct is greater than the sum of the multiple blowing ports of the upper blowing flow duct; and / or the sum of the flow areas of the multiple suction ports of the lower suction flow duct is greater than the sum of the multiple blowing ports of the lower blowing flow duct.

[0017] Optionally, the upper suction pipe and the lower suction pipe are both provided with a first inclined side wall, the first inclined side wall is both facing the product in the furnace body, and the first inclined side wall is provided with the suction port;

[0018] The upper blowing pipe and the lower blowing pipe are both provided with a second inclined side wall, the second inclined side wall is facing the product in the furnace body, and the second inclined side wall is provided with the blowing port

[0019] Optionally, the angle between the plane where the first inclined side wall is located and the plane where the product is located is 40°-50°; the angle between the plane where the second inclined side wall is located and the plane where the product is located is 40°-50°.

[0020] Optionally, the upper heating space and the lower heating space are correspondingly provided along the length direction of the furnace body, the heat equalization circulation system is provided in plurality, a plurality of the upper suction flow pipes and the plurality of the upper blowing flow pipes are correspondingly provided in the plurality of the upper heating spaces, and a plurality of the lower suction flow pipes and the plurality of the lower blowing flow pipes are correspondingly provided in the lower heating space.

[0021] Optionally, the drying device with a heat-averaging circulation system further comprises a heater, and heaters are provided at the top and the bottom of the furnace body, the heater at the top of the furnace body is used to release heat to the upper heating space, and the heater at the bottom of the furnace body is used to release heat to the lower heating space;

[0022] In the length direction of the furnace body, the upper suction flow duct and the upper blowing flow duct are arranged on both sides of the corresponding heater, and the lower suction flow duct and the lower blowing flow duct are arranged on both sides of the corresponding heater.

[0023] Optionally, the power device includes a fan, which is provided with an inlet and two outlets, the inlet of the fan is connected to the mixing duct, one outlet of the fan is connected to the upper blowing duct, and the other outlet of the fan is connected to the lower blowing duct.

[0024] Optionally, the heat equalization circulation system also includes a drainage pipe and a control valve arranged on the drainage pipe, one end of the drainage pipe is connected to the mixing pipe, and the other end of the drainage pipe extends to the outside of the furnace body, the power device is used to draw air from the outside of the furnace body to the mixing pipe through the drainage pipe, and the control valve is configured to adjust the flow area of ​​the drainage pipe.

[0025] Beneficial effects of the present invention:

[0026] The drying equipment with a heat equalization circulation system provided by the present invention provides power for the circulation of fluid in the mixing pipe, the lower suction pipe and the upper blowing pipe, so that the fluid is absorbed in the upper heating space through the upper suction pipe and driven to the mixing pipe, and the fluid is absorbed in the lower heating space through the lower suction pipe and driven to the mixing pipe. The fluids in the upper heating space and the lower heating space are mixed in the mixing pipe, and the power device re-inputs the mixed fluid into the upper heating space through the upper blowing pipe, and re-inputs it into the lower heating space through the lower blowing pipe, so that the temperature of the fluid in the upper heating space and the lower heating space are basically the same, and the heat is also basically the same, thereby reducing the heat difference on both sides of the product thickness direction, improving the drying effect of the two surfaces of the product, and ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 is a first structural schematic diagram of a drying device with a heat-saturating circulation system provided in an embodiment of the present invention;

[0029] Figure 2 is a side view of a drying device with a heat-saturating circulation system provided by an embodiment of the present invention;

[0030] Figure 3 is a first cross-sectional view of a drying device with a heat-saturating circulation system provided by an embodiment of the present invention;

[0031] Figure 4 is a second cross-sectional view of a drying device with a heat-saturating circulation system provided by an embodiment of the present invention;

[0032] Figure 5 The present invention Figure 4 The enlarged view of point A is shown;

[0033] Figure 6 is a schematic structural diagram of a heat soaking cycle system provided in an embodiment of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the upward blowing flow pipeline provided by an embodiment of the present invention;

[0035] Figure 8 The present invention Figure 7 BB section view shown;

[0036] Fig. 9is a front view of a heat soaking circulation system provided by an embodiment of the present invention;

[0037] Fig.10 is a top view of a heat soaking cycle system provided by an embodiment of the present invention;

[0038] Fig.11 is a second structural schematic diagram of a drying device with a heat-saturating circulation system provided in an embodiment of the present invention;

[0039] Fig.12 3 is a schematic diagram of the third structure of the drying device with a heat equalization circulation system provided in an embodiment of the present invention.

[0040] In the figure:

[0041] 100, furnace body; 110, upper heating space; 120, lower heating space; 200, heat-averaging circulation system; 210, mixing pipe; 220, upper suction pipe; 221, suction port; 222, first inclined side wall; 223, third end; 224, fourth end; 230, upper blowing pipe; 231, blowing port; 232, second inclined side wall; 233, first end; 234, second end; 240, lower suction pipe; 250, lower blowing pipe; 260, power device; 270, second connecting pipe; 271, first pipe section; 272, second pipe section; 280, first connecting pipe; 300, heater; 400, drainage pipe; 500, control valve; 600, lifting mechanism; 700, bearing member; 800, rotating mechanism;

[0042] 1. Product; Y, first direction; X, second direction; Z, third direction. DETAILED DESCRIPTION

[0043] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0047] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or there may be a central element.

[0049] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0050] This embodiment provides a drying device with a heat equalization circulation system, which is used for drying products. It can reduce the heat difference on both sides of the product, improve the drying effect of the two surfaces of the product, and ensure the quality of the product.

[0051] For example, the product may be a sheet structure such as a steel strip. The product may be conveyed to a drying device having a heat-saturating circulation system by a conveying mechanism for drying. The product may be continuously conveyed into the furnace body, enter from one end of the furnace body, and exit from the other end.

[0052] like Figures 1 to 12As shown, the drying equipment with a soaking circulation system includes a furnace body 100 and a soaking circulation system 200. The furnace body 100 includes an upper heating space 110 and a lower heating space 120. The upper heating space 110 and the lower heating space 120 are arranged at intervals in the height direction of the furnace body 100. The product 1 is arranged between the upper heating space 110 and the lower heating space 120. In some embodiments, the product 1 divides the interior of the furnace body 100 into the upper heating space 110 and the lower heating space 120.

[0053] In this embodiment, the heat in the upper heating space 110 and the lower heating space 120 is used to heat the product 1. For example, the heat in the upper heating space 110 is used to heat one surface of the product 1 in the thickness direction, and the heat in the lower heating space 120 is used to heat the other surface of the product 1 in the thickness direction, thereby achieving heating and drying of the product 1.

[0054] For example, Figures 4 to 6 As shown, the heat equalization circulation system 200 in this embodiment includes a mixing pipe 210 , an upper suction flow pipe 220 , an upper blowing flow pipe 230 , a lower suction flow pipe 240 , a lower blowing flow pipe 250 and a power device 260 .

[0055] Among them, the upper suction flow duct 220 and the lower suction flow duct 240 are both connected to the mixing duct 210. The upper suction flow duct 220 and the upper blowing flow duct 230 are both arranged in the upper heating space 110, and are both connected to the upper heating space 110, that is, the upper suction flow duct 220 can connect the upper heating space 110 and the mixing duct 210. The lower suction flow duct 240 and the lower blowing flow duct 250 are both arranged in the lower heating space 120, and are both connected to the lower heating space 120, that is, the lower suction flow duct 240 can connect the lower heating space 120 and the mixing duct 210.

[0056] The power device 260 is used to provide power for the circulating flow of the fluid in the mixing pipe 210, the upper suction flow pipe 220 and the upper blowing flow pipe 230, and is used to provide power for the circulating flow of the fluid in the mixing pipe 210, the lower suction flow pipe 240 and the upper blowing flow pipe 230, so as to absorb the fluid in the upper heating space 110 through the upper suction flow pipe 220 and drive it to the mixing pipe 210, and absorb the fluid in the lower heating space 120 through the lower suction flow pipe 240 and drive it to the mixing pipe 210. The fluids in the upper heating space 110 and the lower heating space 120 are mixed in the mixing pipe 210, and the power device 260 re-inputs the mixed fluid into the upper heating space 110 through the upper blowing pipe 230, and re-inputs it into the lower heating space 120 through the lower blowing pipe 250, so that the temperature of the fluids in the upper heating space 110 and the lower heating space 120 are basically the same, and the heat is also basically the same, thereby reducing the heat difference on both sides of the thickness direction of the product 1, improving the consistency of the drying effect on the two surfaces of the product 1, and ensuring the quality of the product 1.

[0057] For the sake of convenience, in this embodiment, Figures 2 to 4 As shown, the length direction of the furnace body 100 is called a first direction Y, the width direction of the furnace body 100 is called a second direction X, and the height direction of the furnace body 100 is called a third direction Z.

[0058] For example, Figure 5 As shown, the upper suction flow duct 220 and the upper blowing flow duct 230 are both arranged on the inner top wall of the furnace body 100, and the lower suction flow duct 240 and the lower blowing flow duct 250 are both arranged on the inner bottom wall of the furnace body 100. In this way, the installation of the upper suction flow duct 220, the upper blowing flow duct 230, the lower suction flow duct 240 and the lower blowing flow duct 250 can be facilitated, and the stability of the upper suction flow duct 220, the upper blowing flow duct 230, the lower suction flow duct 240 and the lower blowing flow duct 250 in the furnace body 100 is improved to prevent shaking; and such an arrangement also allows the distance between the upper blowing flow duct 230 and the lower blowing flow duct 250 and the product 1 to be larger, avoiding damage to the product 1 due to excessively high temperature of the fluid blown out of the upper blowing flow duct 230 and the lower blowing flow duct 250, thereby improving the reliability of the drying equipment with a heat-averaging circulation system.

[0059] In some optional embodiments, such as Figure 6 and Figure 7 As shown, the upper suction flow pipe 220 and the lower suction flow pipe 240 are both provided with a plurality of suction ports 221, through which the fluid in the upper heating space 110 and the lower heating space 120 is sucked. The upper blowing flow pipe 230 and the lower blowing flow pipe 250 are both provided with a plurality of blowing ports 231, through which the mixed fluid is blown into the upper heating space 110 and the lower heating space 120.

[0060] For example, Figure 5 As shown, the upper suction flow pipe 220 and the upper blowing flow pipe 230 are arranged opposite to each other in the length direction of the furnace body 100, and both extend in the width direction (i.e., the second direction X) of the furnace body 100. In this way, the upper suction flow pipe 220 has a larger area for setting the suction port 221, which improves the suction efficiency, and can suck the fluid in each area of ​​the upper heating space 110 in the width direction of the furnace body 100, further improving the suction efficiency. The upper blowing flow pipe 230 has a larger area to improve the blowing efficiency, and the upper blowing flow pipe 230 extends in the width direction of the furnace body 100, and the width direction of the furnace body 100 is the same as the width direction of the product 1, so that the upper blowing flow pipe 230 evenly blows high-temperature fluid to one surface of the product 1 in the width direction of the product 1 to improve the uniformity of heating the one surface.

[0061] Similarly, the lower suction flow duct 240 and the lower blowing flow duct 250 are arranged opposite to each other in the length direction of the furnace body 100 and extend along the width direction of the furnace body 100 to improve the suction efficiency and the uniformity of heating the other surface of the product 1.

[0062] In some optional embodiments, please continue to see Figure 5 The upper suction flow pipe 220 and the lower suction flow pipe 240 are arranged opposite to each other in the height direction of the furnace body 100. The upper blowing flow pipe 230 and the lower blowing flow pipe 250 are arranged opposite to each other in the height direction of the furnace body 100. In this way, it is convenient to control the temperature distribution in the furnace body 100, and when there are multiple heat-saturating circulation systems 200, it is convenient to install the heat-saturating circulation systems 200.

[0063] Of course, it is understandable that the upper suction flow duct 220 and the lower blowing flow duct 250 can also be arranged relative to each other in the height direction of the furnace body 100, and the upper blowing flow duct 230 and the lower suction flow duct 240 can be arranged relative to each other in the height direction of the furnace body 100, and this embodiment does not limit this.

[0064] In some optional embodiments, the amount of fluid sucked into the upper suction flow pipe 220 (or the lower suction flow pipe 240) per unit time through the suction port 221 is greater than or equal to the amount of fluid blown out of the upper blowing flow pipe 230 (or the lower blowing flow pipe 250) per unit time through the blowing port 231. In this way, it is possible to ensure that the upper suction flow pipe 220 (or the lower suction flow pipe 240) sucks in sufficient air volume, thereby ensuring that there is sufficient fluid in the mixing pipe 210, and then the power device 260 can pressurize the fluid in the mixing pipe 210, so that the fluid blown out from the upper blowing flow pipe 230 (or the lower blowing flow pipe 250) has a certain pressure to ensure that it can contact with the product 1, thereby improving the heating effect on the product 1. It should be noted that the fluid in this embodiment can be smoke or hot air.

[0065] Further optionally, the sum of the flow areas of the multiple suction ports 221 of the upper suction flow pipe 220 is greater than the sum of the multiple blowing ports 231 of the upper blowing flow pipe 230; the sum of the flow areas of the multiple suction ports 221 of the lower suction flow pipe 240 is greater than the sum of the multiple blowing ports 231 of the lower blowing flow pipe 250. In this way, the inlet area of ​​the upper suction flow pipe 220 (or the lower suction flow pipe 240) can be larger, thereby ensuring that more fluid can enter the upper suction flow pipe 220 (or the lower suction flow pipe 240), and the outlet area of ​​the upper blowing flow pipe 230 (or the lower blowing flow pipe 250) is larger, so as to realize high-pressure ejection of the fluid, so as to fully contact with the product 1 and achieve an ideal effect.

[0066] In order to facilitate the setting of the suction port 221, Figure 5 and Figure 8 As shown, the upper suction duct 220 and the lower suction duct 240 are both provided with a first inclined side wall 222, and the first inclined side wall 222 is facing the product 1 in the furnace body 100. The first inclined side wall 222 is provided with a suction port 221, that is, a plurality of suction ports 221 are arranged on the first inclined side wall 222, so that the suction port 221 has a larger setting area.

[0067] In some optional embodiments, the angle between the plane where the first inclined side wall 222 is located and the plane where the product 1 is located is 40°-50°. For example, the angle between the plane where the first inclined side wall 222 is located and the plane where the aquatic product 1 is located is 40°, 42°, 45°, 48°, or 50°.

[0068] Similarly, to facilitate the setting of the blowing port 231 , the upper blowing duct 230 and the lower blowing duct 250 are both provided with a second inclined side wall 232 , which faces the product 1 in the furnace body 100 and is provided with a blowing port 231 .

[0069] In some optional embodiments, the angle between the plane where the second inclined side wall 232 is located and the plane where the product 1 is located is 40°-50°. If the angle between the plane where the second inclined side wall 232 is located and the plane where the product 1 is located is too large, and the second inclined side wall 232 approaches a vertical plane, the area of ​​the second inclined side wall 232 will be smaller, and the layout area of ​​the suction port 221 will be smaller, which will affect the amount of fluid being blown; and the fluid blown out of the blowing port 231 on the second inclined side wall 232 will not be directed toward the product 1, affecting the heating efficiency of the product 1. If the angle between the plane where the second inclined side wall 232 is located and the plane where the product 1 is located is too small, and the second inclined side wall 232 approaches a horizontal plane, the layout area of ​​the blowing port 231 will also be affected, and the smoke blown out of the blowing port 231 of the second inclined side wall 232 will directly blow the product 1, and there is a possibility of burning the product 1. For example, Figure 8As shown, the angle b between the plane where the second inclined side wall 232 is located and the plane where the product 1 is located is 40°, 42°, 45°, 48°, and 50°. It should be noted that the product is plate-shaped, and the thickness direction of the product is the vertical direction, that is, the top and bottom surfaces of the product are parallel to the horizontal plane.

[0070] The furnace body 100 is usually long, and the product 1 is moved in the furnace body 100 by conveying. In order to improve the drying efficiency, each area in the length direction of the furnace body 100 can heat and dry the product 1. In order to ensure the heating balance of each area, in this embodiment, a plurality of upper heating spaces 110 and lower heating spaces 120 are correspondingly provided along the length direction of the furnace body 100 (i.e., the first direction Y), and the corresponding upper heating spaces 110 and lower heating spaces 120 are relatively arranged in the height direction of the furnace body 100 (i.e., the third direction Z). And, as Figure 1 As shown, there are multiple heat-averaging circulation systems 200, and each heat-averaging circulation system 200 is provided with an upper suction flow pipe 220, a mixing pipe 210, a lower suction flow pipe 240, an upper blowing flow pipe 230 and a lower blowing flow pipe 250. The multiple upper suction flow pipes 220 and the multiple upper blowing flow pipes 230 are correspondingly arranged in the multiple upper heating spaces 110, and the multiple lower suction flow pipes 240 and the multiple lower blowing flow pipes 250 are correspondingly arranged in the lower heating space 120. In this way, the temperature in each corresponding upper heating space 110 and lower heating space 120 is almost the same, so that the heating effect on the product 1 is more balanced, and the situation where the temperature of one surface is higher than the temperature of another surface is avoided.

[0071] Alternatively, if Figure 5 As shown, the drying device with a heat-averaging circulation system further includes a heater 300. The top and bottom of the furnace body 100 are both provided with heaters 300. The heater 300 at the top of the furnace body 100 is used to release heat to the upper heating space 110, and the heater 300 at the bottom of the furnace body 100 is used to release heat to the lower heating space 120. Exemplarily, the heater 300 in this embodiment can be a porous medium burner, which releases high-temperature flue gas into the corresponding upper heating space 110 or lower heating space 120, and the fluids in the upper heating space 110 and the lower heating space 120 can both be flue gas.

[0072] It should be noted that, when there are a plurality of upper heating spaces 110 , each upper heating space 110 is provided with at least one heater 300 . When there are a plurality of lower heating spaces 120 , each lower heating space 120 is provided with at least one heater 300 .

[0073] In this embodiment, in the length direction of the furnace body 100 (i.e., the first direction Y), the upper suction flow pipe 220 and the upper blowing flow pipe 230 are arranged on both sides of the corresponding heater 300, and the lower suction flow pipe 240 and the lower blowing flow pipe 250 are arranged on both sides of the corresponding heater 300. In this way, it is possible to avoid the high temperature heat generated by the heater 300 from directly contacting the surface of the product 1, avoiding burning of the product 1, ensuring the quality of the product 1, and improving the reliability of the drying equipment with a heat-averaging circulation system.

[0074] In this embodiment, Figure 4 As shown, the first inclined side wall 222 and the second inclined side wall 232 are both arranged toward the corresponding heater 300, so that the fluid (i.e., flue gas) blown out by the blowing port 231 can be mixed with the high-temperature flue gas released by the porous medium burner, so as to achieve the purpose of reducing the temperature of the high-temperature flue gas, further avoiding the situation where the high-temperature flue gas directly contacts the product 1, and further improving the reliability. The second inclined side wall 232 faces the corresponding heater 300, so that the suction port 221 is arranged toward the corresponding heater 300, so that as much heat released by the porous medium burner as possible can be sucked into the suction port 221, thereby reducing the probability of the high-temperature flue gas directly contacting the product 1.

[0075] Exemplarily, the power device 260 includes a fan (not shown in the figure). The fan is provided with an inlet and two outlets. The inlet of the fan is connected to the mixing duct 210, one outlet of the fan is connected to the upper blowing duct 230, and the other outlet of the fan is connected to the lower blowing duct 250, so that the fluid in the mixing duct 210 can be pressed to the upper blowing duct 230 and the lower blowing duct 250. In this embodiment, the fluid is provided to the two blowing ducts by one fan, which reduces the cost of the drying equipment with the heat equalization circulation system and improves the utilization rate of the fan.

[0076] For example, Fig.10 As shown, the upper blowing flow pipe 230 has a first end 233 in the extending direction and a second end 234 disposed opposite to the first end 233 , and the first end 233 is closer to the mixing pipe 210 than the second end 234 .

[0077] In some optional embodiments, the flow area of ​​the upper blowing flow pipe 230 gradually increases along the direction from the second end 234 to the first end 233, that is, the upper blowing flow pipe 230 is a tapered pipe along the direction from the first end 233 to the second end 234. The flow area of ​​the upper blowing flow pipe 230 is the longitudinal cross-sectional area of ​​the inner cavity of the upper blowing flow pipe 230. Since the upper blowing flow pipe 230 extends along the width direction of the furnace body 100 (i.e., the second direction X), it can ensure that the pressure of each position of the upper blowing flow pipe 230 along the width direction of the furnace body 100 (i.e., the second direction X) is consistent, so as to ensure the uniformity of the fluid blown into the furnace body 100, thereby ensuring the uniformity of the fluid distribution in the furnace body 100, improving the heating effect on the product 1, and avoiding the situation where the second end 234 far from the power device 260 is far from the power device 260. The gas pressure is too small, resulting in a reduction in the amount of flue gas outflow. It should be noted that the apertures of multiple blowing ports 231 in this embodiment are the same.

[0078] In some optional embodiments, such as Fig.10 As shown, the upper suction pipe 220 has a third end 223 in the extension direction (ie, the second direction X) and a fourth end 224 disposed opposite to the third end 223 , wherein the third end 223 is closer to the mixing pipe 210 than the fourth end 224 .

[0079] In this embodiment, the flow area of ​​the upper suction flow duct 220 gradually increases along the direction from the fourth end 224 to the third end 223, that is, the upper suction flow duct 220 is a tapered tube along the direction from the third end 223 to the fourth end 224. Among them, the flow area of ​​the upper suction flow duct 220 is the total cross-sectional area of ​​the inner cavity of the upper suction flow duct 220. In this way, it can be ensured that the suction force of each position of the upper suction flow duct 220 along the second direction X is consistent, so as to ensure that the high-temperature flue gas of the furnace body 100 near the upper suction flow duct 220 is sucked into the upper suction flow duct 220, reduce the probability of high-temperature flue gas leakage, avoid the situation that the fourth end 224 far away from the power device 260 cannot effectively exhaust the high-temperature flue gas due to too small suction force, and improve the efficiency of flue gas circulation. It should be noted that in this embodiment, the apertures of multiple suction ports 221 are the same.

[0080] In some other optional embodiments, the flow area of ​​the upper blowing flow pipe 230 is the same along the direction from the second end 234 to the first end 233 of the upper blowing flow pipe 230, and the flow area of ​​the blowing port 231 gradually decreases. In this way, the pressure of each position of the upper blowing flow pipe 230 along the second direction X can be guaranteed to be consistent, so as to ensure the uniformity of the smoke blown into the furnace body 100, thereby ensuring the uniformity of the smoke distribution in the furnace body 100, improving the heating effect on the product 1, and avoiding the situation where the second end 234 far from the power device 260 is far away from the power device 260. The situation of reducing the smoke outflow due to too low gas pressure.

[0081] In some optional embodiments, the flow area of ​​the upper suction flow duct 220 is the same from the fourth end 224 to the third end 223 of the upper suction flow duct 220, and the flow area of ​​the suction port 221 gradually decreases. In this way, it can be ensured that the suction force of each position of the upper suction flow duct 220 along the second direction X is consistent, so as to ensure that the high-temperature flue gas near the upper suction flow duct 220 in the furnace body 100 is sucked into the upper suction flow duct 220, reduce the probability of high-temperature flue gas leakage, avoid the situation that the fourth end 224 far from the power device 260 cannot effectively exhaust the high-temperature flue gas due to too small suction force, and improve the efficiency of flue gas circulation.

[0082] Optionally, the length of the upper suction flow duct 220 in the second direction X is greater than the length of the product 1 in the second direction X, and the orthographic projection of the upper suction flow duct 220 on the product 1 passes through the product 1 to prevent the high-temperature smoke from blowing directly to the product 1. Similarly, the length of the upper blowing flow duct 230 in the second direction X is greater than the length of the product 1 in the second direction X, and the orthographic projection of the upper blowing flow duct 230 on the product 1 passes through the product 1, so that the smoke blown out of the upper blowing flow duct 230 can evenly contact various positions of the product 1 in the second direction X to ensure the heating effect on the product 1.

[0083] For example, Figure 6 or Fig. 9 As shown, the heat soaking circulation system 200 further includes two bearings 700, one end of one bearing 700 is connected to the second end 234 of the upper blowing flow pipe 230, and the other end is connected to the furnace body 100, so as to more firmly fix the upper blowing flow pipe 230 on the furnace body 100, further improving the stability of the upper blowing flow pipe 230. One end of the other bearing 700 is connected to the fourth end 224 of the upper suction flow pipe 220, and the other end is connected to the furnace body 100, so as to more firmly fix the upper suction flow pipe 220 on the furnace body 100, further improving the stability of the upper suction flow pipe 220.

[0084] Optionally, the support member 700 may be a suspension rod or other rod-shaped structures.

[0085] Exemplarily, as shown in the figure, the heat soaking circulation system 200 also includes a first connecting pipe 280. Among them, the first connecting pipe 280 is connected between the mixing pipe 210 and the upper suction flow pipe 220, and the upper suction flow pipe 220 is detachably connected to the first connecting pipe 280. By setting the first connecting pipe 280, on the one hand, the communication between the mixing pipe 210 and the upper suction flow pipe 220 can be achieved; on the other hand, it is convenient to disassemble, clean or replace the upper suction flow pipe 220. For example, the mixing pipe 210 is located outside the furnace body 100, the first connecting pipe 280 is penetrated in the furnace body 100, and the connection position of the upper suction flow pipe 220 and the first connecting pipe 280 can be located in the furnace body 100, so as to facilitate the disassembly of the first connecting pipe 280 and the upper suction flow pipe 220. Of course, it can be understood that the first connecting pipe 280 can also be located outside the furnace body 100, and the upper suction flow pipe 220 passes through the furnace body 100 and is connected to the first connecting pipe 280, which can also facilitate the disassembly of the upper suction flow pipe 220. Since the upper suction flow duct 220 is used to draw smoke through the suction flow port 221, after long-term use, the suction flow port 221 may be blocked, affecting the uniformity of smoking. Therefore, by providing an upper suction flow duct 220 that is easy to disassemble, maintenance efficiency can be improved. Similarly, a first connecting pipe 280 can also be provided between the lower suction flow duct 240 and the mixing duct 210, which is not limited in this embodiment.

[0086] Alternatively, if Figure 1 As shown, the heat-saturating circulation system 200 also includes a second connecting pipe 270. The second connecting pipe 270 is connected between the mixing pipe 210 and the upper blowing pipe 230, and the upper blowing pipe 230 is detachably connected to the second connecting pipe 270. By setting the second connecting pipe 270, on the one hand, the communication between the mixing pipe 210 and the upper blowing pipe 230 can be achieved; on the other hand, it is convenient to disassemble, clean or replace the upper blowing pipe 230. For example, the mixing pipe 210 is located outside the furnace body 100, the second connecting pipe 270 is penetrated through the furnace body 100, and the connection position of the upper blowing pipe 230 and the second connecting pipe 270 can be located inside the furnace body 100, so as to facilitate the disassembly of the second connecting pipe 270 and the upper blowing pipe 230. Of course, it can be understood that the second connecting pipe 270 can also be located outside the furnace body 100, and the upper blowing pipe 230 passes through the furnace body 100 and is connected to the second connecting pipe 270, which can also facilitate the disassembly of the upper blowing pipe 230. Since the smoke pipe is used to blow smoke through the blowing port 231, after long-term use, the blowing port 231 may be blocked, affecting the uniformity of smoke blowing. Therefore, by providing an easily disassembled upper blowing pipe 230, maintenance efficiency can be improved.

[0087] In some optional embodiments, the second connecting pipe 270 is L-shaped and includes a first pipe section 271 and a second pipe section 272. One end of the first pipe section 271 is connected to the mixing pipe 210, and the end of the second pipe section 272 away from the first pipe section 271 is connected to the upper blowing pipe 230, so that the upper suction pipe 220 and the upper blowing pipe 230 can be arranged on both sides of the porous medium burner in the first direction Y. The first connecting pipe 280 is in a straight line, so that the mixing pipe 210 and the power device 260 are close to the upper suction pipe 220, so that the upper suction pipe 220 can have a larger suction force to ensure that as much high-temperature flue gas as possible is sucked.

[0088] In this embodiment, the drying equipment with a heat equalization circulation system also includes a lifting mechanism 600 and a rotating mechanism 800. The lifting mechanism 600 and the rotating mechanism 800 are both arranged outside the furnace body 100, and are used to cooperate with each other to lift the porous medium burner. Specifically, the lifting mechanism 600 includes a cylinder, the output end of the cylinder is rotatably connected to the middle of one side in the width direction of the porous medium burner, and one end in the length direction of the porous medium burner is rotatably set on the rotating mechanism 800, and the rotating mechanism 800 includes but is not limited to a rotating shaft. When the output end of the cylinder is extended and retracted, it can drive the porous medium burner to rotate relative to the rotating mechanism 800, thereby realizing the conversion between the working position and the lifting position. When the porous medium burner is in the working position, such as Fig.11 and Figure 5 As shown, the combustion surface of the porous medium burner faces the product 1 in the furnace body 100; when the porous medium burner is in the raised position, as shown in FIG. Fig.12 As shown, the porous medium burner is located outside the furnace body 100 and is vertical or inclined for easy inspection and maintenance. It should be noted that the porous medium burners can be arranged in groups, and each group of porous medium burners can correspond to at least one lifting mechanism 600 and can be lifted at the same time to improve the lifting efficiency.

[0089] Exemplarily, the second pipe section 272 is located outside the furnace body 100 and extends along the second direction X. The second pipe section 272 is provided to provide installation space for the lifting mechanism 600. Specifically, the lifting mechanism 600 located on the same side of the furnace body 100 as the first pipe section 271 is provided on the side of the first pipe section 271 facing the furnace body 100, so as to shorten the moment when the lifting mechanism 600 drives the porous medium burner to lift, thereby ensuring the lifting stability.

[0090] Optionally, the flow area of ​​the second connecting pipe 270 is larger than the flow area of ​​the upper blowing pipe 230, so that when the smoke flows from the second connecting pipe 270 to the upper blowing pipe 230, the flow area will be reduced. According to the principle of conservation of energy, the smoke can be pressurized to ensure the flow rate of the smoke blown out from the smoke hole, so that the smoke can contact the product 1 to ensure the heating effect.

[0091] Similarly, a second connecting pipe 270 may also be provided between the down-blowing flow pipe 250 and the mixing pipe 210 , which will not be described in detail in this embodiment.

[0092] In some optional embodiments, the amount of fluid sucked into the upper suction flow pipe 220 through the suction port 221 per unit time is greater than or equal to the amount of fluid blown out of the upper blowing flow pipe 230 through the blowing port 231 per unit time, so as to ensure that the upper suction flow pipe 220 sucks in enough air volume, and then has enough air pressure when blowing through the upper blowing flow pipe 230, so as to achieve better heating of the product 1 while not burning the product 1. It should be noted that the fluid in this embodiment can be flue gas.

[0093] There are many ways to control the amount of fluid sucked into the upper suction pipe 220 per unit time to be greater than or equal to the amount of fluid blown out per unit time through the blowing port 231. For example, the area of ​​the suction port 221 and the blowing port 231 can be controlled to achieve this.

[0094] Exemplarily, the sum of the flow areas of the multiple suction ports 221 on the upper suction duct 220 is greater than the sum of the flow areas of the multiple blowing ports 231 on the upper suction duct 220, so that the inlet area of ​​the upper suction duct 220 can be larger, thereby ensuring that more smoke can enter the upper suction duct 220, and the outlet area of ​​the upper blowing duct 230 is larger to achieve high-pressure ejection of smoke, so as to fully contact with the product 1 and achieve the ideal effect.

[0095] Further optionally, the sum of the flow areas of the plurality of suction ports 221 can be made greater than the sum of the flow areas of the plurality of blowing ports 231 by controlling the number of suction ports 221 and blowing ports 231. Figure 6 As shown, the area of ​​the first inclined side wall 222 where the multiple blowing ports 231 are arranged is smaller than the area of ​​the second inclined side wall 232 where the multiple suction ports 221 are arranged, so that the suction ports 221 have a larger arrangement area, thereby allowing more suction ports 221 to be arranged.

[0096] In some optional embodiments, the vertical section of the upper suction flow duct 220 is larger than the vertical section of the upper blowing flow duct 230. In this way, the upper suction flow duct 220 can flow more smoke than the upper blowing flow duct 230, so as to increase the amount of smoke flowing into the mixing duct 210 through the upper suction flow duct 220, thereby ensuring that the smoke is ejected from the upper blowing flow duct 230 at high pressure.

[0097] Alternatively, if Figure 6 and Fig. 9As shown, the heat-averaging circulation system 200 further includes a drainage pipe 400 and a control valve 500 disposed on the drainage pipe 400. One end of the drainage pipe 400 is connected to the mixing pipe 210, and the other end of the drainage pipe 400 extends to the outside of the furnace body 100. The power device 260 is configured to draw air from the outside of the furnace body 100 to the mixing pipe 210 through the drainage pipe 400, and the control valve 500 is configured to adjust the flow area of ​​the drainage pipe 400. When the flow area of ​​the drainage pipe 400 is not 0, the air outside the furnace body 100 can enter the mixing pipe 210 through the drainage pipe 400 and mix with the flue gas in the mixing pipe 210. When the flow area of ​​the drainage pipe 400 is 0, the air outside the furnace body 100 cannot enter the mixing pipe 210 through the drainage pipe 400.

[0098] During the operation of the heating equipment, when encountering an abnormal production process or shearing and coiling, the running speed of the product 1 in the furnace body 100 will drop. In order to prevent the overburning of the product 1, the heating power of the heating equipment needs to be reduced as quickly as possible. However, when the product 1 returns to normal speed, it is necessary to restore the heating power to a normal value as quickly as possible. However, the furnace body 100 is usually composed of an external steel structure shell and internal insulation materials. During the cooling and heating process of the furnace body 100, the heat storage of the insulation material is a serious limiting factor, which can be understood as a kind of "thermal inertia", that is, the extension of the cooling process time.

[0099] In the present embodiment, by providing a drainage pipe 400, when the furnace body 100 needs to be cooled quickly, the control valve 500 is controlled to open a corresponding degree, and air is sucked in from outside the furnace body 100 through the drainage pipe 400 by the suction force of the power device 260 (such as a fan), and is sent into the furnace body 100 through the upper blowing duct 230 and the lower blowing duct 250, so that the temperature in the furnace body 100 can be quickly reduced, thereby shortening the time of the cooling process.

[0100] In addition, the furnace body 100 is usually equipped with a smoke exhaust pipe (not shown in the figure), through which the smoke in the furnace body 100 is discharged. If no external air is introduced, only the smoke generated by the combustion of the porous medium heating component is discharged through the smoke exhaust pipe. In this embodiment, by providing a drainage pipe 400, the cold air outside the furnace body 100 can be introduced into the furnace body 100, so that there is not only smoke in the furnace body 100, but also introduced air. At this time, the smoke exhaust volume of the smoke exhaust pipe is the smoke volume plus the air volume, and the smoke exhaust volume can be increased. The larger the smoke exhaust volume, the more water vapor can be taken away from the furnace body 100, thereby reducing the humidity in the furnace body 100, that is, the moisture content in the atmosphere in the furnace body 100 is quickly reduced.

[0101] It should be noted that when it is necessary to introduce air from outside the furnace body 100 through the drainage pipe 400, it is necessary to control the power of the power device 260 (such as a fan) to increase. If the power of the power device 260 remains unchanged, the addition of external air will reduce the amount of fluid sucked through the upper suction flow duct 220 and the lower suction flow duct 240, and the purpose of not burning product 1 and reducing the humidity in the furnace cannot be achieved.

[0102] In some optional embodiments, the upper suction flow duct 220 and the upper blowing flow duct 230 may both be polygonal tubes, arc-shaped tubes, elliptical tubes, etc., which are not limited in this embodiment.

[0103] The lower blowing flow pipe 250 in this embodiment is completely identical to the upper blowing flow pipe 230, and will not be described in detail in this embodiment. The lower suction flow pipe 240 in this embodiment is completely identical to the upper suction flow pipe 220, and will not be described in detail in this embodiment.

[0104] The drying equipment with a heat equalization circulation system provided in this embodiment is equipped with an upper suction flow duct 220 and an upper blowing flow duct 230 on both sides of the furnace body 100. The suction force generated by the power device 260 extracts the high-temperature flue gas through the upper suction flow duct 220 to avoid direct contact with the surface of the product 1. The extracted high-temperature flue gas enters the mixing duct 210 from the upper suction flow duct 220 and the lower suction flow duct 240, and the flue gas is sent back into the furnace through the upper blowing flow duct 230 and the lower blowing flow duct 250 through the action of the power device 260. The circulation of flue gas is realized to avoid energy waste. In addition, under the action of the power component 4 (such as a fan), the flue gas sucked in from all parts of the width direction of the furnace body 100 is fully mixed and then blown out into the furnace body 100, which can increase the temperature uniformity.

[0105] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Drying equipment with a heat-saturating circulation system, characterized in that: include: A furnace body (100), the furnace body (100) comprising an upper heating space (110) and a lower heating space (120), the product (1) being arranged between the upper heating space (110) and the lower heating space (120), and the heat in the upper heating space (110) and the lower heating space (120) being used to heat the product (1); A heat-averaging circulation system (200) comprises a mixing pipe (210), an upper suction pipe (220), an upper blowing pipe (230), a lower suction pipe (240), a lower blowing pipe (250) and a power device (260); the upper suction pipe (220) and the lower suction pipe (240) are both connected to the mixing pipe (210); the upper suction pipe (220) and the upper blowing pipe (230) are both arranged in the upper heating space (110) and are both connected to the upper heating space (110). ; The lower suction flow duct (240) and the lower blowing flow duct (250) are both arranged in the lower heating space (120) and are both connected to the lower heating space (120); the power device (260) is used to provide power for the circulation of the fluid in the mixing duct (210), the upper suction flow duct (220) and the upper blowing flow duct (230), and is used to provide power for the circulation of the fluid in the mixing duct (210), the lower suction flow duct (240) and the upper blowing flow duct (230).

2. The drying equipment with a heat-saturating circulation system according to claim 1, characterized in that: The upper suction flow pipe (220) and the upper blowing flow pipe (230) are both arranged on the inner top wall of the furnace body (100); and the lower suction flow pipe (240) and the lower blowing flow pipe (250) are both arranged on the inner bottom wall of the furnace body (100).

3. The drying device with a heat-saturating circulation system according to claim 1, characterized in that: The upper suction flow pipe (220) and the upper blowing flow pipe (230) are arranged opposite to each other in the length direction of the furnace body (100), and both extend in the width direction of the furnace body (100); And / or, the downward suction flow pipe (240) and the downward blowing flow pipe (250) are arranged opposite to each other in the length direction of the furnace body (100), and both extend along the width direction of the furnace body (100); And / or, the upper suction flow pipe (220) and the lower suction flow pipe (240) are arranged opposite to each other in the height direction of the furnace body (100), and the upper blowing flow pipe (230) and the lower blowing flow pipe (250) are arranged opposite to each other in the height direction of the furnace body (100); And / or, the upper suction flow duct (220) and the lower blowing flow duct (250) are arranged opposite to each other in the height direction of the furnace body (100), and the upper blowing flow duct (230) and the lower suction flow duct (240) are arranged opposite to each other in the height direction of the furnace body (100).

4. The drying device with a heat-saturating circulation system according to claim 1, characterized in that: The upper suction flow pipe (220) and the lower suction flow pipe (240) are both provided with a plurality of suction flow openings (221), and the upper blowing flow pipe (230) and the lower blowing flow pipe (250) are both provided with a plurality of blowing flow openings (231); The sum of the flow areas of the multiple suction ports (221) of the upper suction flow duct (220) is greater than the sum of the multiple blowing ports (231) of the upper blowing flow duct (230); and / or the sum of the flow areas of the multiple suction ports (221) of the lower suction flow duct (240) is greater than the sum of the multiple blowing ports (231) of the lower blowing flow duct (250).

5. The drying device with a heat-saturating circulation system according to any one of claims 1 to 4, characterized in that: The upper suction pipe (220) and the lower suction pipe (240) are both provided with a first inclined side wall (222), the first inclined side wall (222) is both facing the product (1) in the furnace body (100), and the first inclined side wall (222) is provided with the suction port (221); The upper blowing duct (230) and the lower blowing duct (250) are both provided with a second inclined side wall (232), the second inclined side wall (232) is both oriented toward the product (1) in the furnace body (100), and the second inclined side wall (232) is provided with the blowing port (231).

6. The drying device with a heat-saturating circulation system according to claim 5, characterized in that: The angle between the plane where the first inclined side wall (222) is located and the plane where the product (1) is located is 40°-50°; the angle between the plane where the second inclined side wall (232) is located and the plane where the product (1) is located is 40°-50°.

7. The drying device with a heat-saturating circulation system according to any one of claims 1 to 4, characterized in that: The upper heating space (110) and the lower heating space (120) are provided in a plurality along the length direction of the furnace body (100); the heat equalization circulation system (200) is provided in a plurality; the plurality of upper suction flow pipes (220) and the plurality of upper blowing flow pipes (230) are provided in a plurality of the upper heating spaces (110); the plurality of lower suction flow pipes (240) and the plurality of lower blowing flow pipes (250) are provided in a plurality of the lower heating spaces (120).

8. The drying device with a heat-saturating circulation system according to any one of claims 1 to 4, characterized in that: The drying device with a heat-averaging circulation system further comprises a heater (300), wherein the top and bottom of the furnace body (100) are both provided with a heater (300), the heater (300) at the top of the furnace body (100) is used to release heat to the upper heating space (110), and the heater (300) at the bottom of the furnace body (100) is used to release heat to the lower heating space (120); In the length direction of the furnace body (100), the upper suction flow duct (220) and the upper blowing flow duct (230) are arranged on both sides of the corresponding heater (300), and the lower suction flow duct (240) and the lower blowing flow duct (250) are arranged on both sides of the corresponding heater (300).

9. The drying device with a heat-saturating circulation system according to any one of claims 1 to 4, characterized in that: The power device (260) comprises a fan, which is provided with an inlet and two outlets, wherein the inlet of the fan is connected to the mixing duct (210), one outlet of the fan is connected to the upper blowing duct (230), and the other outlet of the fan is connected to the lower blowing duct (250).

10. The drying device with a heat-saturating circulation system according to any one of claims 1 to 4, characterized in that: The heat equalization circulation system (200) further includes a drainage pipe (400) and a control valve (500) disposed on the drainage pipe (400); one end of the drainage pipe (400) is connected to the mixing pipe (210); the other end of the drainage pipe (400) extends to the outside of the furnace body (100); the power device (260) is used to draw air from the outside of the furnace body (100) to the mixing pipe (210) through the drainage pipe (400); and the control valve (500) is configured to adjust the flow area of ​​the drainage pipe (400).

Images