Drying equipment

Abstract

This invention provides a drying device, relating to the field of drying equipment technology. The drying device includes a shell and hollow air nozzles; the shell has an air inlet communicating with an air inlet chamber inside the shell, and a first pressure equalization chamber and a second pressure equalization chamber are formed between the two sides of the air inlet chamber and the inner wall of the shell, respectively; a first opening is provided on the side wall of the air inlet chamber corresponding to the middle of the first pressure equalization chamber, and a second opening is provided at a position corresponding to the middle of the second pressure equalization chamber; multiple air nozzles are provided on one side of the air inlet chamber, with one end of each nozzle located on the side of the first pressure equalization chamber and the other end located on the side of the second pressure equalization chamber; each air nozzle has an inlet at one of its two ends. This drying device allows hot air from the air inlet chamber to flow into the pressure equalization chamber through the middle of the first and second pressure equalization chambers via the first and second openings on the side wall of the air inlet chamber, and then flows evenly to the multiple air nozzles, effectively improving the uniformity of wind speed and temperature changes at each air nozzle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a drying device. BACKGROUND

[0002] After the coating process of the battery pole piece and other substrates is completed, the slurry coated on the substrate also needs to be dried. Since the air jet drying technology developed based on the principle of fluid mechanics is suitable for drying sheet or strip materials, and it has the advantages of fast, smooth and high drying efficiency, the drying process of the coated substrate is usually carried out in an oven that can supply air and exhaust air.

[0003] Specifically, the above-mentioned oven is usually composed of a shell, an air inlet chamber, a plurality of air nozzles and a plurality of guide rollers. The air inlet chamber is arranged inside the shell. The side of the shell and the side of the air inlet chamber are both provided with an air inlet. The air inlet of the shell and the air inlet of the air inlet chamber are in communication with each other. The plurality of guide rollers are arranged in sequence along the length direction of the air inlet chamber on one side of the air inlet chamber. The plurality of air nozzles are fixed in sequence along the length direction of the air inlet chamber on the side of the air inlet chamber facing the plurality of guide rollers. The side of the air nozzle facing the guide roller is provided with an air outlet hole, and the other side is provided with an air inlet hole in communication with the air inlet chamber. When drying the substrate, the substrate coated with slurry is first laid flat on the plurality of guide rollers. Then hot air is supplied into the air inlet chamber through the air inlets on the shell and the air inlets on the air inlet chamber. The hot air then flows in the air inlet chamber along the length direction of the air inlet chamber, and then enters the plurality of air nozzles in sequence through the air inlet holes of the air nozzles. Then the hot air is blown to the substrate on the guide roller through the air outlet holes of the air nozzles, so as to achieve the purpose of drying.

[0004] However, during the flow of hot air in the air inlet chamber along the length direction of the air inlet chamber, the air speed will change with the flow process, so the air speed and temperature at each air nozzle are not uniform, resulting in a drying blind area, which causes uneven drying of the entire surface of the substrate. SUMMARY

[0005] The purpose of the present application is to provide a drying device to alleviate the technical problem that in the prior art, the air speed and temperature at each air nozzle in the oven are not uniform during the drying of the coated substrate, resulting in a drying blind area, which causes uneven drying of the entire surface of the substrate.

[0006] In a first aspect, the present application provides a drying device, comprising a shell and a hollow air nozzle.

[0007] The shell is provided with an air inlet chamber, and the air inlet chamber is in communication with the air inlet of the shell. The first and second pressure equalization chambers are formed between the two sides of the air inlet chamber and the inner wall of the shell.

[0008] The first through port is arranged at a position corresponding to the middle part of the first equalizing cavity on the side wall of the air inlet chamber, and the second through port is arranged at a position corresponding to the middle part of the second equalizing cavity on the side wall of the air inlet chamber.

[0009] The air inlet chamber is provided with a plurality of air nozzles on one side, and one end of each air nozzle is located on one side of the first equalizing cavity, and the other end is located on one side of the second equalizing cavity.

[0010] In an optional embodiment, the air nozzles are staggered with the entrances near the end of the first equalizing cavity.

[0011] In an optional embodiment, a plurality of guide plates are arranged in the air inlet chamber, and one end of each guide plate is arranged on one side of the air inlet to divide the air inlet chamber into a plurality of air channels.

[0012] In an optional embodiment, the air inlet is communicated with the side wall of the air inlet chamber in the length direction, and each guide plate is in the shape of L.

[0013] In an optional embodiment, the air nozzle comprises a hollow air nozzle seat, and the air nozzle seat is provided with the entrance on one side of the air inlet chamber, and the air nozzle seat is provided with an air outlet hole.

[0014] In an optional embodiment, the air nozzle further comprises a first cover body and a second cover body, the first cover body and the second cover body each comprise a closed side and an open side, the closed side of the first cover body is fixed to one side of the air nozzle seat, and the closed side of the first cover body is provided with a through hole communicated with the air outlet hole.

[0015] The second cover body is arranged in the first cover body, the open side of the second cover body is located on the same side as the open side of the first cover body, and the open side of the second cover body and the open side of the first cover body form an outlet.

[0016] In an optional embodiment, a baffle is arranged between the first cover body and the second cover body, the baffle divides the space between the first cover body and the second cover body into two compression cavities, and the baffle is provided with a communication hole to communicate the two compression cavities.

[0017] In an optional embodiment, the inside of the shell is further provided with an air outlet chamber and a drying chamber, each of the air nozzles is provided with an outlet, the outlets of the plurality of air nozzles extend into the drying chamber, the side wall of the shell is provided with an air outlet, and the air outlet and the drying chamber are in communication with the air outlet chamber.

[0018] In an optional embodiment, the air outlet chamber and the drying chamber are in communication through an air outlet cavity, the air outlet chamber is arranged on one side of the air inlet chamber, the air outlet cavity is arranged between the plurality of air nozzles and the air inlet chamber, the side of the air outlet cavity close to the air nozzles is provided with an air inlet hole, and the side of the air outlet cavity close to the air outlet chamber is provided with an air outlet opening.

[0019] In an optional embodiment, the air outlet cavity is provided with a partition plate extending along the arrangement direction of the plurality of air nozzles, the plurality of partition plates are arranged along the length direction of the air nozzles to divide the air outlet cavity into a plurality of air outlet flow channels.

[0020] Each of the air outlet flow channels is in communication with the air inlet hole, and each of the air outlet flow channels is provided with the air outlet opening at the end close to the air outlet chamber.

[0021] The drying device comprises a shell and a plurality of hollow air nozzles. The shell is internally provided with an air inlet chamber. The shell is provided with an air inlet which is in communication with the air inlet chamber. The air inlet chamber is provided with a first pressure equalizing chamber and a second pressure equalizing chamber on both sides of the air inlet chamber. The air inlet chamber is provided with a first through hole and a second through hole corresponding to the middle of the first pressure equalizing chamber and the second pressure equalizing chamber. The air inlet chamber is provided with a plurality of air nozzles. One end of each air nozzle is located on one side of the first pressure equalizing chamber, and the other end of each air nozzle is located on one side of the second pressure equalizing chamber. Each air nozzle is provided with an inlet at one end. The inlet is in communication with the first pressure equalizing chamber or the second pressure equalizing chamber. The drying device is used for drying the coated battery pole piece and other substrates. The shell of the drying device is internally provided with a plurality of guide rollers for supporting the substrate. The plurality of guide rollers are installed on one side of the plurality of air nozzles. The air nozzles are provided with outlets. The plurality of guide rollers are opposite to the outlet positions of the plurality of air nozzles. The substrate coated with slurry is laid on the plurality of guide rollers. Hot air is supplied into the air inlet chamber through the air inlet. The hot air continues to flow and flows into the first pressure equalizing chamber and the second pressure equalizing chamber through the first through hole and the second through hole on both sides of the air inlet chamber. The first through hole is located on the side wall of the air inlet chamber corresponding to the middle of the first pressure equalizing chamber. The second through hole is located on the side wall of the air inlet chamber corresponding to the middle of the second pressure equalizing chamber. The hot air enters the first pressure equalizing chamber and the second pressure equalizing chamber from the middle of the first pressure equalizing chamber and the middle of the second pressure equalizing chamber, respectively. The hot air in the first pressure equalizing chamber flows uniformly from the middle to both sides and then flows into the air nozzle inlet connected with the first pressure equalizing chamber. The hot air in the second pressure equalizing chamber flows uniformly from the middle to both sides and then flows into the air nozzle inlet connected with the second pressure equalizing chamber. The first through hole and the first pressure equalizing chamber cooperate, and the second through hole and the second pressure equalizing chamber cooperate, which can effectively improve the uniformity of the hot air flowing to the air nozzle. In addition, compared with the mode that the hot air directly flows from the air inlet chamber to the air nozzle, the first pressure equalizing chamber and the second pressure equalizing chamber in the drying device can compress and equalize the hot air during the flow process, so that the hot air can flow to the inlet of the plurality of air nozzles at a high flow rate after entering the first pressure equalizing chamber and the second pressure equalizing chamber, thereby improving the uniformity of the wind speed and temperature change of the hot air at the plurality of air nozzles. Since the two ends of each air nozzle in the drying device are provided with an inlet, the drying device can reduce the air inlet area of the air nozzle under the premise that hot air enters each air nozzle, so as to further improve the flow rate of the hot air in the first pressure equalizing chamber and the second pressure equalizing chamber, thereby further improving the uniformity of the wind speed and temperature change of the hot air at the plurality of air nozzles.It should be noted that when hot air enters the nozzle, it continues to flow and exits through the nozzle's outlet. Since the outlet positions of multiple guide rollers and multiple nozzles are opposite, the hot air flowing out of the nozzles will blow onto the substrate surface on the multiple guide rollers, thus achieving the purpose of drying the substrate.

[0022] Compared with the prior art, the drying device provided by the present invention allows hot air in the air inlet chamber to flow into the equalization chamber through the middle of the first and second equalization chambers via the first and second openings on the side wall of the air inlet chamber, and then flow evenly to multiple air nozzles through the equalization chamber, effectively improving the uniformity of wind speed and temperature changes at each air nozzle. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the drying device provided in an embodiment of the present invention;

[0025] Figure 2 An exploded view of the drying apparatus provided in an embodiment of the present invention;

[0026] Figure 3 This is a front view of the drying apparatus provided in an embodiment of the present invention;

[0027] Figure 4 for Figure 3 AA section view in the middle;

[0028] Figure 5 for Figure 4 BB section view in the middle;

[0029] Figure 6 This is a partial structural diagram of the first pressure equalization chamber provided in an embodiment of the present invention;

[0030] Figure 7 This is a partial structural schematic diagram of the drying device provided in an embodiment of the present invention;

[0031] Figure 8 This is another partial structural schematic diagram of the drying device provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of multiple air nozzles provided in an embodiment of the present invention;

[0033] Figure 10 for Figure 9A enlarged view of the C part in Fig.

[0034] Figure 11 A sectional view of the drying device provided by the embodiment of the present application;

[0035] Figure 12 A sectional view of the drying device provided by the embodiment of the present application; Figure 11 A D-D sectional view of the drying device provided by the embodiment of the present application;

[0036] Figure 13 A structure schematic view of the plurality of tuyeres and the air outlet net plate provided by the embodiment of the present application.

[0037] Figure: 1 - shell; 10 - air inlet chamber; 100 - first through port; 101 - second through port; 102 - flow guide plate; 11 - air inlet; 12 - first pressure equalizing chamber; 13 - second pressure equalizing chamber; 14 - air outlet chamber; 15 - drying chamber; 16 - air outlet; 17 - air outlet cavity; 170 - air outlet through port; 171 - partition plate; 1710 - through hole; 18 - explosion-proof port; 2 - tuyere; 20 - inlet; 21 - outlet; 22 - tuyere seat; 220 - air outlet hole; 23 - first cover body; 24 - second cover body; 25 - baffle; 250 - communication hole; 3 - guide roller assembly; 4 - telescopic drive; 5 - air outlet net plate; 50 - air inlet hole; 6 - air outlet flow channel; 60 - bottom plate; 7 - air inlet flow channel; 70 - side plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0040] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0041] Embodiment:

[0042] As Figures 1-10As shown, the drying device provided by the embodiment includes a shell 1 and a hollow air nozzle 2; the shell 1 is internally provided with an air inlet chamber 10, the shell 1 is provided with an air inlet 11, and the air inlet 11 is communicated with the air inlet chamber 10; the two sides of the air inlet chamber 10 are respectively formed with a first pressure equalization cavity 12 and a second pressure equalization cavity 13 between the inner walls of the shell 1; the side wall of the air inlet chamber 10 is provided with a first through port 100 corresponding to the middle part of the first pressure equalization cavity 12, and the first through port 100 is communicated with the first pressure equalization cavity 12; the side wall of the air inlet chamber 10 is provided with a second through port 101 corresponding to the middle part of the second pressure equalization cavity 13, and the second through port 101 is communicated with the second pressure equalization cavity 13; one side of the air inlet chamber 10 is provided with a plurality of air nozzles 2, and one end of each of the plurality of air nozzles 2 is located at one side of the first pressure equalization cavity 12, and the other end is located at one side of the second pressure equalization cavity 13; the two ends of each air nozzle 2 are selectively provided with an inlet 20 for communication with the first pressure equalization cavity 12 or the second pressure equalization cavity 13.

[0043] The drying device provided by the embodiment is used for drying the coated battery pole piece and other substrates, and based on this, as shown in Figure 1 、 Figure 2 and Figure 3 , the inside of the shell 1 of the drying device can also be provided with a guide roller assembly 3 to support the substrate. Specifically, the guide roller assembly 3 includes a plurality of guide rollers, and the plurality of guide rollers can be mounted on one side of the plurality of air nozzles 2, and as shown in Figure 9 and Figure 10 , the air nozzle 2 is provided with an outlet 21, and as shown in Figure 2 、 Figure 11 and Figure 12 , the plurality of guide rollers are opposite to the positions of the outlets 21 of the plurality of air nozzles 2.

[0044] In addition, the plurality of guide rollers can be detachably mounted in the inside through fasteners such as screws, and the position of each guide roller in the shell 1 can be finely adjusted so that the roller barrel surface of each guide roller can reach a horizontal state. Wherein, the two ends of each guide roller can be connected with the inner wall of the shell 1 through bearings and bearing seats, at this time, in order to ensure the coaxiality of the two ends of the guide roller, the circumferential side of the bearing seat is provided with a limiting block to limit the bearing seat.

[0045] Wherein, in order to improve the drying effect of the substrate, the shell 1 can be formed by splicing an upper shell 1 and a lower shell 1, and the upper shell 1 and the lower shell 1 are respectively provided with air chambers; the plurality of guide rollers are mounted between the upper shell 1 and the lower shell 1, the plurality of air nozzles 2 are arranged above the air chamber in the upper shell 1, and the plurality of air nozzles 2 are arranged above the air chamber in the lower shell 1. At this time, the upper shell 1 and its internal structure and the lower shell 1 and its internal structure are symmetrically arranged with the plane where the plurality of guide rollers are located as the symmetry plane, when the plurality of guide rollers are drying the substrate, the plurality of air nozzles 2 in the upper shell 1 can dry the upper surface of the substrate, at the same time, the plurality of air nozzles 2 in the lower shell 1 can dry the lower surface of the substrate.

[0046] To further improve the drying effect, as shown in Figure 12 The plurality of tuyeres 2 in the upper shell 1 and the plurality of tuyeres 2 in the lower shell 1 can be staggered.

[0047] Further, to facilitate the opening of the upper shell 1 and the lower shell 1 to place or take the substrate on the plurality of guide rollers, the upper shell 1 and the lower shell 1 can be connected to each other by an opening and closing mechanism, which can use a telescopic drive 4 such as a pneumatic cylinder. When the telescopic drive 4 is extended, it can drive the upper shell 1 and the lower shell 1 to separate from each other to open the shell 1; when the telescopic drive 4 is shortened, it can drive the upper shell 1 and the lower shell 1 to approach each other and abut to close the shell 1.

[0048] In this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 The air inlet 11 of the shell 1 and the hot air chamber can be connected to each other by a pipeline.

[0049] When drying the substrate, first lay the substrate coated with slurry on the plurality of guide rollers, then supply hot air into the air inlet 11 of the shell 1 to the air inlet 10, after the hot air enters the air inlet 10, as shown in Figure 4 and Figure 5 , it will continue to flow and pass through the first port 100 and the second port 101 on both sides of the air inlet 10 to the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13 respectively. As shown in Figure 6 , since the first port 100 is arranged at the position of the side wall of the air inlet 10 corresponding to the middle part of the first pressure equalizing chamber 12, and the second port 101 is arranged at the position of the side wall of the air inlet 10 corresponding to the middle part of the second pressure equalizing chamber 13, when the hot air enters the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13, it enters the corresponding pressure equalizing chamber from the middle part of the first pressure equalizing chamber 12 and the middle part of the second pressure equalizing chamber 13 respectively, so that the hot air in the first pressure equalizing chamber 12 flows uniformly from the middle part to both sides, then flows through the first pressure equalizing chamber 12 to the tuyere 2 inlet 20 connected with the first pressure equalizing chamber 12, and the hot air in the second pressure equalizing chamber 13 flows uniformly from the middle part to both sides, then flows through the second pressure equalizing chamber 13 to the tuyere 2 inlet 20 connected with the second pressure equalizing chamber 13. In this process, the cooperation of the first port 100 and the first pressure equalizing chamber 12 and the cooperation of the second port 101 and the second pressure equalizing chamber 13 can effectively improve the uniformity of the hot air flowing to the tuyere 2.

[0050] In addition, compared with the mode that the hot air directly flows to the blow nozzles 2 from the air inlet chamber 10, the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13 in the drying device provided by the embodiment can also compress and equalize the pressure of the hot air during the flow of the hot air, so that the hot air can flow to the inlets 20 of the plurality of blow nozzles 2 at a higher flow rate after entering the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13, thereby improving the uniformity of the change of the wind speed and temperature of the hot air at the plurality of blow nozzles 2.

[0051] In addition, since the two ends of each blow nozzle 2 in the drying device provided by the embodiment are selectively provided with the inlet 20, the drying device can reduce the air inlet area at the blow nozzle 2 while ensuring that hot air enters each blow nozzle 2, so that the flow rate of the hot air in the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13 is further improved, thereby further improving the uniformity of the wind speed and temperature change of the hot air at the plurality of blow nozzles 2.

[0052] It should be noted that after the hot air enters the blow nozzle 2, the hot air will continue to flow and flow out through the outlet 21 of the blow nozzle 2, as shown in Figure 12 Since the plurality of guide rollers are opposite the positions of the outlets 21 of the plurality of blow nozzles 2, the hot air will blow to the surface of the substrate on the plurality of guide rollers after flowing out of the outlets 21 of the blow nozzles 2, thereby achieving the purpose of drying the substrate.

[0053] Compared with the prior art, the drying device provided by the embodiment can make the hot air in the air inlet chamber 10 flow into the middle of the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13 through the first through port 100 and the second through port 101 of the side wall of the air inlet chamber 10, and then flow to the plurality of blow nozzles 2 through the pressure equalizing chamber, thereby effectively improving the uniformity of the change of the wind speed and temperature at each blow nozzle 2.

[0054] Further, as shown in Figure 7 and Figure 8 The inlets 20 of the plurality of blow nozzles 2 are staggered at the end of the first pressure equalizing chamber 12.

[0055] When the inlets 20 of the plurality of blow nozzles 2 are staggered at the end of the first pressure equalizing chamber 12, the plurality of blow nozzles 2 can form a staggered air inlet arrangement structure, so that the hot air flowing out of the first pressure equalizing chamber 12 and the second pressure equalizing chamber 13 enters different blow nozzles 2, which not only ensures that hot air enters each blow nozzle 2, but also effectively improves the uniformity of the hot air entering each blow nozzle 2 and the flow rate of the hot air, thereby further improving the uniformity of the change of the wind speed and temperature at each blow nozzle 2.

[0056] As shown in Figure 2 and Figure 4 The air inlet chamber 10 is provided with a plurality of guide plates 102, one end of the plurality of guide plates 102 is distributed on one side of the air inlet 11 at intervals, so as to divide a plurality of air channels in the air inlet chamber 10.

[0057] The plurality of flow guides 102 can split and guide the hot air flowing into the air inlet chamber 10, so that the hot air can quickly and uniformly fill the air inlet chamber 10, so that the hot air can quickly flow to the first and second pressure equalization chambers 12 and 13 through the first and second through holes 100 and 101.

[0058] Further, the air inlet 11 is in communication with the side wall of the air inlet chamber 10 in the length direction, and each flow guide 102 is L-shaped. Specifically, a bending portion is arranged on the plate surface between the two ends of each flow guide 102, and the plate surface between the end of the flow guide 102 away from the air inlet 11 and the bending portion extends along the length direction of the air inlet chamber 10.

[0059] In the embodiment, the shapes of the shell 1 and the air inlet chamber 10 can be cuboids, and the length direction of the air inlet chamber 10 is the same as the length direction of the shell 1, so that the first and second pressure equalization chambers 12 and 13 can extend along the length direction of the air inlet chamber 10, and the plurality of air nozzles 2 can be distributed along the length direction of the air inlet chamber 10.

[0060] Therefore, when the air inlet 11 is in communication with the side wall of the air inlet chamber 10 in the length direction, the hot air entering the air inlet chamber 10 from the air inlet 11 needs to flow along the width direction of the air inlet chamber 10 first, and then turn to flow along the length direction of the air inlet chamber 10 to reach the first and second through holes 100 and 101. At this time, the bending portion on the L-shaped flow guide 102 can guide the turning of the hot air, so that the hot air can smoothly turn along the length direction of the air inlet chamber 10 at the bending portion, and will not turn under the reverse impact of the inner wall of the air inlet chamber 10, effectively improving the flow efficiency of the hot air.

[0061] Further, to improve the flow smoothness of the hot air, the bending portion at the flow guide 102 can be arc-shaped bending, and the arc shape protrudes away from the air inlet 11.

[0062] As shown in Figure 7 , Figure 8 , Figure 9 and Figure 10 , the air nozzle 2 includes a hollow air nozzle seat 22, and the air nozzle seat 22 is provided with an inlet 20 at one end, and the air nozzle seat 22 is arranged on one side of the air inlet chamber 10 and is provided with an air outlet hole 220.

[0063] The air nozzle seat 22 can be a hollow column structure, and to improve the air outlet area of the air nozzle 2 to improve the drying effect, the air outlet hole 220 can be a plurality of groups, and the plurality of groups of air outlet holes 220 are distributed along the length direction of the air nozzle 2 on one side of the air nozzle 2, and any group of air outlet holes 220 includes a plurality of air outlet holes 220 distributed along the width direction of the air nozzle 2.

[0064] In use, the internal space of the tuyere seat 22 can pressurize the hot air, in combination with the plurality of air outlets 220 distributed on the tuyere seat 22, the tuyere seat 22 can effectively improve the flow rate of the hot air and improve the uniformity of the hot air outlet, thereby effectively preventing the hot air from escaping randomly to form a wind speed and pressure dead angle area, and improving the drying effect of the hot air.

[0065] Further, as shown in Figure 10 The tuyere 2 further includes a first cover body 23 and a second cover body 24, both of which include a closed side and an open side. The closed side of the first cover body 23 is fixed to one side of the tuyere seat 22, and the closed side of the first cover body 23 is provided with a through hole communicating with the air outlet 220. The second cover body 24 is spaced apart and arranged inside the first cover body 23, and the open side of the second cover body 24 is located on the same side as the open side of the first cover body 23, and the open side of the second cover body 24 and the open side of the first cover body 23 form an outlet 21.

[0066] When the hot air flows out of the air outlet 220 on the tuyere seat 22, the hot air first enters the space between the first cover body 23 and the second cover body 24 through the through hole on the closed side of the first cover body 23, and then flows out through the outlet 21 between the open side of the first cover body 23 and the open side of the second cover body 24. It should be noted that the area of the outlet 21 between the open side of the first cover body 23 and the open side of the second cover body 24 is small, and at this time the outlet 21 is approximately a slit, which can effectively enhance the flow rate of the hot air outlet, thereby improving the drying effect.

[0067] Among them, the space volume between the first cover body 23 and the second cover body 24 is smaller than the space volume in the tuyere seat 22, thereby the space between the first cover body 23 and the second cover body 24 can further pressurize the hot air, thereby further improving the flow rate of the hot air, reducing the wind speed and pressure dead angle area, and improving the drying effect.

[0068] As shown in Figure 10 The space between the first cover body 23 and the second cover body 24 is provided with a baffle 25, which is used to divide the space between the first cover body 23 and the second cover body 24 into two compression cavities, and the baffle 25 is provided with a communication hole 250 to communicate the two compression cavities.

[0069] When the baffle 25 is arranged at the interval between the first cover body 23 and the second cover body 24, the hot air entering the interval between the first cover body 23 and the second cover body 24 through the through hole on the first cover body 23 will first enter the compression cavity close to the tuyere seat 22, and then enter the compression cavity far from the tuyere seat 22 through the communication hole 250 on the baffle 25. In this process, the compression cavities on both sides of the baffle 25 can respectively compress the hot air. Therefore, during the process of the hot air flowing through the tuyere 2, the hot air will be compressed and released three times in the two compression cavities inside the tuyere seat 22 and between the first cover body 23 and the second cover body 24, which can maximize the dead angle area of the wind speed and wind pressure, and effectively improve the outflow effect and uniformity.

[0070] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8 , the inside of the shell 1 is also provided with an air outlet chamber 14 and a drying chamber 15, each tuyere 2 is provided with an outlet 21, the outlets 21 of the plurality of tuyeres 2 extend into the drying chamber 15, and the side wall of the shell 1 is provided with an air outlet 16. The air outlet 16 and the drying chamber 15 are both in communication with the air outlet chamber 14.

[0071] A plurality of guide rollers for supporting the base material can be arranged in the drying chamber 15, and the air outlet chamber 14 is used to communicate the drying chamber 15 and the air outlet 16, so that the hot air after completing the drying process can be discharged to the outside of the shell 1 through the air outlet chamber 14 and the air outlet 16, thereby facilitating the subsequent hot air entering the drying chamber 15.

[0072] Further, as shown in Figure 7 , the air outlet chamber 14 and the drying chamber 15 are communicated through an air outlet cavity 17, the air outlet chamber 14 is arranged on one side of the air inlet chamber 10, the air outlet cavity 17 is arranged between the plurality of tuyeres 2 and the air inlet chamber 10, the side of the air outlet cavity 17 close to the tuyere 2 is provided with an air inlet hole 50, and the side of the air outlet cavity 17 close to the air outlet chamber 14 is provided with an air outlet through hole 170.

[0073] The air outlet cavity 17 is used to communicate the drying chamber 15 and the air outlet chamber 14. By arranging the air outlet chamber 14 on one side of the air inlet chamber 10 and arranging the air outlet cavity 17 between the plurality of tuyeres 2 and the air inlet chamber 10, the space in the shell 1 can be fully utilized, and the space occupancy of the shell 1 can be effectively reduced.

[0074] In addition, since the air outlet cavity 17 is arranged between the plurality of tuyeres 2 and the air inlet chamber 10, the volume of the air outlet cavity 17 is smaller than that of the drying chamber 15 and the air inlet chamber 10. Therefore, the air outlet cavity 17 can pressurize the airflow during the air outlet process, thereby effectively improving the air outlet rate.

[0075] As shown in Figure 8 and Figure 13As shown, the adjacent two tuyeres 2 are connected with an air outlet net plate 5, the side of the tuyere 2 facing the air chamber, the air outlet net plate 5 and the side of the air chamber facing the tuyere 2 form an air outlet cavity 17; the air outlet net plate 5 is provided with a mesh hole, and the mesh hole is an air inlet hole 50.

[0076] The air outlet net plate 5 not only can play a connecting and supporting role for the plurality of tuyeres 2, and the mesh hole on the air outlet net plate 5 can effectively improve the air outlet uniformity.

[0077] As shown, Figure 8 The air outlet cavity 17 is provided with a plurality of partition plates 171 extending along the arrangement direction of the plurality of tuyeres 2, the plurality of partition plates 171 are spaced apart along the length direction of the tuyere 2, so as to divide the air outlet cavity 17 into a plurality of air outlet flow channels 6; each air outlet flow channel 6 is in communication with the air inlet hole 50, and each air outlet flow channel 6 is provided with an air outlet opening 170 close to the air outlet chamber 14.

[0078] The partition plate 171 can divide the air outlet cavity 17 into a plurality of air outlet flow channels 6, and the plurality of air outlet flow channels 6 can play a role in air flow distribution and air uniformity during the air outlet process, so that the air outlet process is more uniform.

[0079] It should be noted that the existing oven usually does not design the air uniformity during the air outlet process, so that the air pressure in the oven is difficult to change greatly due to the influence of the air outlet effect, for example, the air pressure in the oven is difficult to enter the state of micro-positive pressure or micro-negative pressure by increasing the air flow or reducing the air flow operation, although the air pressure environment in the oven can be changed by increasing the air exhaust amount of the oven at this time, but increasing the air exhaust amount of the oven needs to use a larger power fan, which seriously wastes energy.

[0080] And the drying device provided by the embodiment can make the air outlet cavity 17 form a plurality of parallel air outlet flow channels 6 by setting the air outlet cavity 17 between the plurality of tuyeres 2 and the air inlet chamber 10 and setting a plurality of partition plates in the air outlet cavity 17, thereby effectively improving the air outlet process uniformity and air outlet efficiency, and effectively ensuring the stability of the air flow pressure in the shell 1, facilitating the operator to make the air pressure in the shell 1 be in the state of micro-positive pressure or micro-negative pressure by increasing the air flow or reducing the air flow operation, without using a larger power fan, thereby effectively saving energy.

[0081] In addition, in order to further improve the air outlet rate, the bottom of the air outlet flow channel 6 can have a slope, specifically, the bottom of the air outlet flow channel 6 is inclined relative to the horizontal plane, and from the end of the air outlet flow channel 6 away from the air outlet opening 170 to the end provided with the air outlet opening 170, the air outlet flow channel 6 is inclined downward relative to the horizontal plane.

[0082] In the embodiment, the air outlet cavity 17 can also be divided into a first layer cavity close to the tuyere 2 and a second layer cavity close to the air chamber, as Figure 8As shown, a plurality of partition plates 171 are arranged in the second layer cavity to divide a plurality of air outlet flow channels 6 and a plurality of air inlet flow channels 7 in the second layer cavity, and the air inlet flow channels 7 and the air outlet flow channels 6 are staggered; a bottom plate 60 is further connected between the bottom sides of the adjacent two partition plates 171 located at the air outlet flow channels 6, and the bottom plate 60 is used to separate the first layer cavity and the second layer cavity at the air outlet flow channels 6; a side plate 70 is connected between the end portions of the adjacent two partition plates 171 located at the air inlet flow channels 7 and close to the air outlet chamber 14, and the side plate 70 is used to separate the air outlet chamber 14 and the air outlet cavity 17 at the air inlet flow channels 7; a through hole 1710 is formed in each partition plate 171, and the through hole 1710 is used to communicate the air inlet flow channels 7 and the air outlet flow channels 6.

[0083] At this time, the air outlet flow channels 6 and the air inlet holes 50 are communicated with each other through the through holes 1710 of the partition plates 171 and the air inlet flow channels 7, and after the airflow flows into the air outlet cavity 17 through the air outlet mesh plate 5, the airflow will first enter the first layer cavity. Since the bottom sides of the adjacent two partition plates 171 located at the air inlet flow channels 7 are not connected by the bottom plate 60, the air inlet flow channels 7 and the first layer cavity are communicated with each other. At this time, the airflow will directly enter the air inlet flow channels 7 from the first layer cavity, then enter the air outlet flow channels 6 through the through holes 1710 of the partition plates 171, and then flow to the air outlet chamber 14 through the air outlet flow channels 6 and the air outlet openings 170.

[0084] Since the plurality of air outlet flow channels 6 and the plurality of air inlet flow channels 7 are staggered, when the plurality of partition plates 171 are used to divide the plurality of air outlet flow channels 6 and the plurality of air inlet flow channels 7 in the second layer cavity, the air outlet uniformity can be further improved under the premise of ensuring that the total air outlet area remains unchanged, so that the air outlet process can achieve good uniformity and effectively improve the air outlet effect.

[0085] As can be seen, the drying device provided in the embodiment not only can achieve air inlet uniformity by cooperation of the first pressure equalization cavity 12, the second pressure equalization cavity 13 and the plurality of air nozzles 2, but also can achieve air outlet uniformity by cooperation of the air outlet mesh plate 5, the air outlet cavity 17 and the plurality of partition plates 171, so that the air inlet uniformity, air outlet uniformity and circulating air uniformity can be ensured during long-term operation of the device.

[0086] In the embodiment, in order to improve the drying effect, the shell 1 can be made of thermal insulation material. Further, in order to reduce heat loss, the side wall of the shell 1 can also have a double-layer structure, and a thermal insulation layer made of thermal insulation material such as silicate cotton is filled between the double-layer side walls of the shell 1.

[0087] The thickness of the thermal insulation layer is not limited and can be determined according to the use requirements. For example, the thickness of the thermal insulation layer can be 100 mm.

[0088] In addition, in order to ensure that a clean drying environment can be formed in the shell 1, sealing pads can be installed at the joints, openings and interfaces of the internal structure of the shell 1.

[0089] As shown in Figure 1 The shell 1 of the drying device can also be provided with an explosion-proof port 18. When the residual amount of slurry in the shell 1 exceeds the explosion limit, the gas pressure generated by the explosion can be instantaneously discharged through the explosion-proof port 18, thereby reducing the explosion risk and loss.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A drying apparatus, characterized by, Includes a housing (1) and a hollow nozzle (2); The housing (1) is provided with an air inlet chamber (10), and the housing (1) is provided with an air inlet (11) and the air inlet (11) is connected to the air inlet chamber (10). A first pressure equalization chamber (12) and a second pressure equalization chamber (13) are formed between the two sides of the air inlet chamber (10) and the inner wall of the housing (1), respectively. The side wall of the air inlet chamber (10) is provided with a first opening (100) at a position corresponding to the middle of the first pressure equalization chamber (12), and the first opening (100) communicates with the first pressure equalization chamber (12); the side wall of the air inlet chamber (10) is provided with a second opening (101) at a position corresponding to the middle of the second pressure equalization chamber (13), and the second opening (101) communicates with the second pressure equalization chamber (13); The air inlet chamber (10) is provided with a plurality of air nozzles (2) on one side, and one end of each of the plurality of air nozzles (2) is located on one side of the first pressure equalization chamber (12), and the other end is located on one side of the second pressure equalization chamber (13); each of the air nozzles (2) is provided with an inlet (20) at one end, and the inlet (20) is used to communicate with the first pressure equalization chamber (12) or the second pressure equalization chamber (13); The multiple air nozzles (2) are staggered with the inlet (20) at the ends near the first pressure equalization chamber (12); The air inlet chamber (10) is provided with a plurality of guide plates (102), one end of each of the plurality of guide plates (102) being spaced apart on one side of the air inlet (11) to divide the air inlet chamber (10) into a plurality of air ducts. The air inlet (11) is connected to the side wall of the air inlet chamber (10) along its length, and each of the guide plates (102) is L-shaped.

2. The drying apparatus according to claim 1, wherein The nozzle (2) includes a hollow nozzle seat (22), with the inlet (20) provided at one of the two ends of the nozzle seat (22). The nozzle seat (22) is located on one side of the air inlet chamber (10) and has an air outlet (220) on it.

3. The drying apparatus according to claim 2, wherein The nozzle (2) also includes a first cover (23) and a second cover (24). Both the first cover (23) and the second cover (24) include a closed side and an open side. The closed side of the first cover (23) is fixed to one side of the nozzle seat (22), and the closed side of the first cover (23) is provided with a through hole that communicates with the air outlet (220). The second cover (24) is spaced inside the first cover (23), the opening side of the second cover (24) is on the same side as the opening side of the first cover (23), and an outlet (21) is formed between the opening side of the second cover (24) and the opening side of the first cover (23).

4. The drying apparatus according to claim 3, wherein A baffle (25) is provided at the interval between the first cover (23) and the second cover (24). The baffle (25) is used to divide the space between the first cover (23) and the second cover (24) into two compression cavities. The baffle (25) is provided with a connecting hole (250) to connect the two compression cavities.

5. The drying apparatus according to claim 1, wherein The inside of the shell (1) is further provided with an air outlet chamber (14) and a drying chamber (15), each of the air nozzles (2) is provided with an outlet (21), the outlets (21) of the plurality of air nozzles (2) extend into the drying chamber (15), the side wall of the shell (1) is provided with an air outlet (16), the air outlet (16) and the drying chamber (15) are in communication with the air outlet chamber (14).

6. The drying apparatus according to claim 5, wherein The air outlet chamber (14) and the drying chamber (15) are in communication through an air outlet cavity (17), the air outlet chamber (14) is arranged on one side of the air inlet chamber (10), the air outlet cavity (17) is arranged between the plurality of air nozzles (2) and the air inlet chamber (10), and the side of the air outlet cavity (17) close to the air nozzles (2) is provided with an air inlet hole (50), and the side of the air outlet cavity (17) close to the air outlet chamber (14) is provided with an air outlet opening (170).

7. The drying apparatus of claim 6, wherein The air outlet cavity (17) is provided with a partition plate (171) extending along the arrangement direction of the plurality of air nozzles (2), the partition plate (171) is a plurality of and is distributed along the length direction of the air nozzle (2) to divide a plurality of air outlet flow channels (6) in the air outlet cavity (17); Each of the air outlet flow channels (6) is in communication with the air inlet hole (50), and each of the air outlet flow channels (6) is provided with the air outlet opening (170) at one end close to the air outlet chamber (14).

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