Air knife device

Abstract

The utility model relates to an air knife device which comprises an air blowing assembly which comprises an air conveying part and an air knife part connected to the output end of the air conveying part, the air conveying part is used for conveying air to the air knife part, and the air knife part is provided with an air blowing hole used for blowing air towards a product; the heating assembly comprises a heating liquid input part and a heating part connected to the output end of the heating liquid input part, the heating liquid input part is arranged in the gas conveying part, the heating part is arranged in the air knife part, and the heating liquid input part is used for conveying heating liquid into the heating part; and the heating liquid in the heating part is used for heating the gas in the air knife part. According to the air knife device, products can be quickly and effectively dried without increasing blowing pressure, the products are prevented from being damaged, the temperature of the heating liquid input into the heating liquid input part can be adjusted as required, the air knife device can meet the process requirements of various drying temperatures, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of drying, in particular to an air knife device. Background Art

[0002] Currently, air knives are often used to dry products using compressed air or nitrogen. However, existing air knives cannot quickly dry products in a short period of time. High-pressure gas or multiple air knives are needed to shorten the time required to dry the products and meet the drying requirements. Utility Model Content

[0003] Based on this, the utility model provides a wind knife device, comprising:

[0004] An air blowing assembly, comprising an air delivery portion and an air knife portion connected to an output end of the air delivery portion, wherein the air delivery portion is used to deliver air to the air knife portion, and the air knife portion has an air blowing hole for blowing the air toward the product; and

[0005] The heating component includes a heating liquid input part and a heating part connected to the output end of the heating liquid input part, wherein the heating liquid input part is arranged in the gas transmission part, and the heating part is arranged in the wind knife part. The heating liquid input part is used to transport heating liquid to the heating part, and the heating liquid in the heating part is used to heat the gas in the wind knife part.

[0006] Furthermore, the heating portion and the wind knife portion are coaxially arranged.

[0007] Furthermore, the heating assembly also includes a heating liquid output portion;

[0008] The heated liquid output portion is connected to the heating portion, and is used to output the heated liquid in the heating portion to the outside of the blowing assembly.

[0009] Furthermore, the heated liquid input part is connected to the upper end of the heating part, and the heated liquid output part is connected to one side of the heating part.

[0010] Further, the heated liquid input part is connected to the output end of the liquid heater, the heated liquid output part is connected to the input end of the liquid heater, and the liquid heater is used to heat the heated liquid.

[0011] Furthermore, the heating part has a chamber for accommodating the heating liquid, and a partition is arranged in the chamber, the partition divides the chamber into a first cavity and a second cavity, and a flow channel connecting the first cavity and the second cavity is formed between the partition and the inner wall of the chamber, and the heating liquid flows through the heating liquid input part, the first cavity, the flow channel and the second cavity in sequence and then enters the heating liquid output part.

[0012] Furthermore, the chamber also has a third cavity connecting the heated liquid output part and the second cavity, and the first cavity, the second cavity and the third cavity are arranged in sequence from top to bottom, wherein the cross-sectional area of ​​the third cavity is smaller than the cross-sectional area of ​​the second cavity.

[0013] Furthermore, there are at least two flow channels, and the flow channels are symmetrically arranged with respect to the partition.

[0014] Furthermore, the heating liquid is water.

[0015] Furthermore, the gas is compressed air or nitrogen.

[0016] Compared with the prior art, the beneficial features of the utility model are: when the heated liquid flows through the heated liquid input part, the wind knife device reduces the heat loss of the heated liquid because the heated liquid input part is arranged in the gas transmission part. When the heated liquid flows through the heating part arranged in the wind knife part, the gas flowing through the wind knife part can be heated, thereby increasing the temperature of the gas blown out from the blowing hole, so that the product can be dried quickly and effectively, and there is no need to increase the blowing pressure to avoid damaging the product. The temperature of the heated liquid input to the heated liquid input part can also be adjusted as needed, so that the wind knife device can meet the process requirements of various drying temperatures and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 for Figure 1 AA section view;

[0019] Figure 3 for Figure 1 Right view of;

[0020] Figure 4 for Figure 3 BB cross-sectional view;

[0021] Figure 5 for Figure 1 CC section view;

[0022] Figure 6 for Figure 1 Bottom view of

[0023] Among them: 1-blowing component (101-air transmission part, 102-wind knife part (1021-blowing hole)), 2-heating component (201-heating liquid input part, 202-heating part (2021-chamber (20211-first cavity, 20212-second cavity, 20213-third cavity, 20214-flow channel)), 203-heating liquid output part, 204-partition (2041-side, 2042-side)). DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] Please refer to Figures 1 to 6 The wind knife device of the utility model embodiment can be used to blow dry products, and the wind knife device includes a blowing component 1 and a heating component 2. The blowing component 1 includes a gas supply part 101 and a wind knife part 102. The wind knife part 102 is connected to the output end of the gas supply part 101. The gas supply part 101 is used to transport gas to the wind knife part 102. The gas enters the gas supply part 101 from the input end of the gas supply part 101, and after flowing through the gas supply part 101, it enters the wind knife part 102 from the output end of the gas supply part 101. The wind knife part 102 has a blowing hole 1021. The blowing hole 1021 is used to blow gas toward the product. The heating component 2 includes a heating liquid input part 201 and a heating part 202. The heating part 202 is connected to the output end of the heating liquid input part 201. Among them, the heating liquid input part 201 is wrapped in the gas supply part 101, and the heating part 202 is wrapped in the wind knife part 102. The heating liquid input part 201 is used to transport the heating liquid into the heating part 202. The heating liquid in the heating part 202 is used to heat the gas in the wind knife part 102, so that the gas blown out of the blowing hole 1021 is heated gas.

[0028] The wind knife device of the utility model embodiment, since the heated liquid input part 201 is arranged in the gas delivery part 101, even if no additional heat insulation structure is arranged to wrap the heated liquid input part 201, when the heated liquid flows through the heated liquid input part 201, the heat loss of the heated liquid can be reduced. When the heated liquid flows through the heating part 202 arranged in the wind knife part 102, the gas flowing through the wind knife part 102 can be heated, and the temperature of the gas blown out from the blowing hole 1021 is increased, so that the product can be dried quickly and effectively. Moreover, the drying efficiency can be improved without increasing the blowing pressure, and damage to the product can be avoided. The temperature of the heated liquid input to the heated liquid input part 201 can also be adjusted as needed, thereby adjusting the temperature of the gas blown out of the blowing hole 1021, that is, the blowing temperature, so that the wind knife device can meet the process requirements of various drying temperatures and has a wide range of applications. Moreover, the drying effect of a single wind knife device of this embodiment is equivalent to the drying effect of multiple traditional wind knives, which reduces the occupied volume and saves space. In addition, the liquid heater used to heat the heated liquid can be kept away from the wind knife part 102 and the product, which is safer. Using heating liquid to heat the gas not only has high heating efficiency but also makes the heating more uniform.

[0029] It is understandable that the heating liquid input part 201 may be wrapped with a heat insulating structure, or the heating liquid input part 201 may not be wrapped with a heat insulating structure, and it can be set according to actual needs.

[0030] In some preferred embodiments, please refer to Figure 2 , Figure 4 and Figure 5 The heating part 202 is coaxially arranged with the wind knife part 102. That is, the heating part 202 is located in the middle of the wind knife part 102, so that the heating liquid in the heating part 202 can evenly heat the gas in the wind knife part 102, which can be applied to production processes with high requirements for blowing temperature.

[0031] In some preferred embodiments, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The heating component 2 further includes a heating liquid output portion 203. The heating liquid output portion 203 is connected to the heating portion 202, and is used to output the heating liquid in the heating portion 202 to the outside of the blowing component 1, so that the heating liquid in the heating component 2 can flow, and the heated heating liquid can enter the heating liquid input portion 201 after being heated, so as to achieve continuous heating of the gas.

[0032] In some more preferred embodiments, please refer to Figure 2 and Figure 4The heating liquid input part 201 can be connected to the upper end of the heating part 202, so as to facilitate the heating liquid to enter the heating part 202. The heating liquid output part 203 can be connected to one side of the heating part 202, which can ensure that the heating liquid can flow out of the heating part 202 smoothly, and can also avoid the heating liquid flowing out of the heating part 202 too quickly, resulting in insufficient heat exchange between the heating liquid and the gas, thereby further ensuring the heating effect.

[0033] In some preferred embodiments, please refer to Figures 1 to 4 The gas delivery part 101 can be connected to the upper end of the wind knife part 102, so that the gas in the gas delivery part 101 can enter the wind knife part 102 more smoothly. The blowing hole 1021 can be opened at the lower end of the wind knife part 102, so that the blowing hole 1021 can blow air more smoothly.

[0034] In some preferred embodiments, please refer to Figure 5 and Figure 6 The wind knife portion 102 may be provided with a plurality of blowing holes 1021. All the blowing holes 1021 may be evenly spaced apart on the wind knife portion 102. As an example, the wind knife portion 102 may be provided with a plurality of rows and columns of evenly spaced blowing holes 1021, such as Figure 5 and Figure 6 It is understandable that the blowing holes 1021 can also be arranged in other arrangements on the wind knife portion 102, as long as it is ensured that the wind knife portion 102 can blow out the heated gas evenly.

[0035] In some preferred embodiments, the wind knife device can also be connected to a liquid heater (not shown) for providing heated liquid, and the liquid heater can circulate and heat the heated liquid. Specifically, the heated liquid input part 201 can be connected to the output end of the liquid heater, and the heated liquid output part 203 can be connected to the input end of the liquid heater. The liquid heater heats the heated liquid, and then the heated heated liquid is transported to the heating part 202 through the heated liquid input part 201. The heated liquid transported to the heating part 202 is fully heat-exchanged with the gas in the wind knife part 102, so that the gas in the wind knife part 102 is heated by the heated liquid. Then the heated gas is blown out from the blowing hole 1021, and the heated liquid after heat exchange with the gas flows out of the heating part 202 from the heated liquid output part 203 and returns to the liquid heater. The liquid heater heats the heating liquid again, and then inputs the reheated heating liquid into the heating part 202 through the heating liquid input part 201, thereby realizing the circulation and repeated use of the heating liquid, which not only saves production costs but also improves the gas heating efficiency, ensures the gas heating effect, and thus improves the drying efficiency.

[0036] In some preferred embodiments, please refer to Figure 2, a chamber 2021 is provided in the heating part 202, and the chamber 2021 is used to contain the heated liquid. The chamber 2021 can be connected to the heated liquid input part 201 and the heated liquid output part 203 respectively. A partition 204 is provided in the chamber 2021, and the partition 204 divides the chamber 2021 into a first cavity 20211 and a second cavity 20212, and a flow channel 20214 is formed between the partition 204 and the inner wall of the chamber 2021. The flow channel 20214 can connect the first cavity 20211 and the second cavity 20212. The heated liquid flows through the heated liquid input part 201, the first cavity 20211, the flow channel 20214 and the second cavity 20212 in sequence and then enters the heated liquid output part 203. It is understandable that the partition 204 is provided in the chamber 2021 to extend the flow path of the heated liquid in the heating part 202, so that the heated liquid in the heating part 202 and the gas in the wind knife part 102 can exchange heat more fully, which is not only more energy-saving and environmentally friendly, but also allows the gas in the wind knife part 102 to be heated more evenly, ensuring the gas heating effect, thereby ensuring the drying effect. Please refer to Figure 4 , where the flow path of the heating liquid is as follows Figure 4 The dotted line with arrows in the middle shows the gas flow path. Figure 4 Indicated by the solid line with arrows.

[0037] As an example, please refer to Figure 5 The cross section of the chamber 2021 may be square, and the partition 204 may be a square plate-shaped structure. Two oppositely disposed side surfaces 2041 of the partition 204 are fixed to the inner wall of the chamber 2021, thereby firmly fixing the partition 204 in the chamber 2021. A gap is formed between the other two oppositely disposed side surfaces 2042 of the partition 204 and the inner wall of the chamber 2021, and the gap is configured as a flow channel 20214.

[0038] In some examples, the cross section of the chamber 2021 may be rectangular, and accordingly, the partition 204 may also be a rectangular plate-shaped structure, such as Figure 5 In order to extend the flow path of the heated liquid in the heating part 202 as much as possible, the longer side 2041 of the partition 204 can be fixed to the inner wall of the chamber 2021, and the shorter side 2042 of the partition 204 can form a flow channel 20214 with the inner wall of the chamber 2021.

[0039] It is understandable that in other embodiments, the cross-sectional shape of the chamber 2021 and the shape of the partition 204 can be other shapes, as long as it is ensured that the heating liquid in the heating part 202 can fully exchange heat with the gas in the wind knife part 102.

[0040] In some preferred embodiments, please refer to Figure 2and Figure 4 , the chamber 2021 also has a third cavity 20213. The third cavity 20213 communicates with the heating liquid output part 203 and the second cavity 20212. In addition, the first cavity 20211, the second cavity 20212 and the third cavity 20213 are arranged in sequence from top to bottom, so that the heating liquid can flow through the first cavity 20211 and the second cavity 20212 into the third cavity 20213. Among them, the cross-sectional area of ​​the third cavity 20213 is smaller than the cross-sectional area of ​​the second cavity 20212, which makes it easier for the liquid in the second cavity 20212 to flow into the third cavity 20213 and be discharged through the heating liquid output part 203.

[0041] In some preferred embodiments, please refer to Figure 4 and Figure 5 There are at least two flow channels 20214. Moreover, the flow channels 20214 are symmetrically arranged with respect to the partition plate 204, so as to ensure that the gas in the wind knife portion 102 is fully heated as much as possible.

[0042] As an example, the gas may be compressed air. Alternatively, the gas may be nitrogen. It is understood that in other embodiments, the gas may also be other gases, which will not be described in detail herein.

[0043] In some preferred embodiments, the heating liquid may be water, which has a large specific heat capacity, high safety, and low cost, further saving production costs.

[0044] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A wind knife device, characterized in that: include: An air blowing assembly, comprising an air delivery portion and an air knife portion connected to an output end of the air delivery portion, wherein the air delivery portion is used to deliver air to the air knife portion, and the air knife portion has an air blowing hole for blowing the air toward the product; and The heating component includes a heating liquid input part and a heating part connected to the output end of the heating liquid input part, wherein the heating liquid input part is arranged in the gas transmission part, and the heating part is arranged in the wind knife part. The heating liquid input part is used to transport heating liquid to the heating part, and the heating liquid in the heating part is used to heat the gas in the wind knife part.

2. The air knife device according to claim 1, characterized in that: The heating portion is coaxially arranged with the wind knife portion.

3. The wind knife device according to claim 1, characterized in that: The heating assembly also includes a heated liquid output portion; The heated liquid output portion is connected to the heating portion, and is used to output the heated liquid in the heating portion to the outside of the blowing assembly.

4. The wind knife device according to claim 3, characterized in that: The heated liquid input part is connected to the upper end of the heating part, and the heated liquid output part is connected to one side of the heating part.

5. The wind knife device according to claim 3, characterized in that: The heated liquid input portion is connected to the output end of the liquid heater, and the heated liquid output portion is connected to the input end of the liquid heater. The liquid heater is used to heat the heated liquid.

6. The wind knife device according to claim 3, characterized in that: The heating part has a chamber for accommodating the heating liquid, and a partition is arranged in the chamber, and the partition divides the chamber into a first cavity and a second cavity. A flow channel connecting the first cavity and the second cavity is formed between the partition and the inner wall of the chamber, and the heating liquid flows through the heating liquid input part, the first cavity, the flow channel and the second cavity in sequence and then enters the heating liquid output part.

7. The air knife device according to claim 6, characterized in that: The chamber also has a third cavity connecting the heated liquid output portion and the second cavity, and the first cavity, the second cavity and the third cavity are arranged in sequence from top to bottom, wherein the cross-sectional area of ​​the third cavity is smaller than the cross-sectional area of ​​the second cavity.

8. The wind knife device according to claim 6, characterized in that: There are at least two flow channels, and the flow channels are symmetrically arranged with respect to the partition.

9. The wind knife device according to claim 1, characterized in that: The heating liquid is water.

10. The air knife device according to claim 1, characterized in that: The gas is compressed air or nitrogen.

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