Drying and conveying mechanism and small particle drying machine

Abstract

The invention belongs to the technical field of dryers. The drying and conveying mechanism comprises a conveying belt, the conveying belt comprises a plurality of track shoes, and the drying and conveying mechanism is characterized in that vent holes are formed in the track shoes, and the vent holes are kidney-shaped horn holes. The creeper tread is used for solving the technical problems that the creeper tread of an existing microparticle dryer adopts circular horn holes, so that microparticles are damaged, and dust is increased. The invention further discloses a small particle horizontal dryer which comprises a box body, and the drying and conveying mechanism is arranged in the box body.

Description

Technical Field

[0001] The present invention belongs to the technical field of drying machines, and in particular relates to a drying and conveying mechanism. The present invention also relates to a horizontal drying machine for small-particle seedling materials, comprising the above-mentioned drying and conveying mechanism. Background Art

[0002] With the development of aquaculture, the aquaculture industry has higher and higher requirements for the quality of micro-feed particles. The diameter of micro-feed particles is less than 0.5mm. In the early stage, the production process was to obtain smaller particles by granulation, drying and then crushing. However, the crushing effect will make the particle size uneven, and the crushing process will also cause nutritional loss. In addition, the edges and corners produced by crushing will cause damage to the digestive system of young aquatic creatures such as fish and shrimp. In addition, the destruction process will also produce dust, causing waste of raw materials and polluting the environment. Therefore, at this stage, the research on the direct production of micro-particles is becoming more and more in-depth. This requires the drying equipment to also have the ability to dry micro-particles.

[0003] At present, the dryers for micro-particles in China adopt not only vertical structures but also fluidized bed structures. Vertical dryers have common problems such as flap blockage and inability to clean.

[0004] Since the diameter of tiny particles is very small, in order to ensure that the particles do not fall through the track shoes, the holes of the track shoes should be as small as possible. However, in order to ensure the ventilation and drying effect, the hole diameter of the belt dryer cannot be too small. Therefore, the hole diameter on the track shoe can only be made slightly smaller than the diameter of the particles. This will cause some particles to be squeezed and stuck in the holes of the track shoes. Therefore, an important problem that needs to be solved for the tiny particle dryer is how to prevent the holes of the track shoes from getting stuck.

[0005] The mesh holes on the conveyor belt include conventional track plate type, mesh track plate type, woven mesh type, etc. The mesh track plate is composed of a thin plate and a bracket. There are many small holes arranged on the thin plate, which can be used for drying and conveying tiny particles such as seedlings. Figure 1 As shown, the Chinese invention patent specification with publication number CN117739653A discloses a micro-particle dryer, which discloses that a circular trumpet hole 1110' is provided on a track shoe 111', and the technical problems therein are: First, for the circular horn hole structure, if the particles are stuck for cleaning, it means that the particles are cut in the entire circumferential direction, resulting in the breakage of tiny particles and increased dust.

[0006] Second, since the single hole area of ​​the circular trumpet hole is small, for track shoes with the same opening ratio, the number of circular trumpet holes is greater and the cost is higher. Summary of the invention

[0007] The first object of the present invention is to provide a drying and conveying mechanism to solve the technical problem that the circular trumpet holes in the track plates of the existing micro-particle dryer lead to the breakage of micro-particles and the increase of dust.

[0008] In order to solve the above technical problems, the present invention adopts the following technical scheme: a drying conveying mechanism, including a conveyor belt, wherein the conveyor belt includes a plurality of track shoes, and wherein the track shoes are provided with ventilation holes, and the ventilation holes are waist-shaped trumpet holes.

[0009] The ventilation holes of the track shoes of the present invention adopt a waist-shaped trumpet hole design, which has the advantage that one side of the hole is large and the other side is small, and the side with the small hole contacts the small particles. The design of the trumpet hole allows the small particles with the maximum diameter to contact the hole only once, and half of the circle at the maximum diameter of the small particles does not contact the hole, which reduces the resistance of the hole wall to the stuck particles passing through the hole, reduces the probability of blockage from its own structural design, and reduces the difficulty of cleaning.

[0010] In the waist-shaped speaker hole of the present invention, only the contact area between the particles and the hole wall will be cut, thus reducing the breakage of the tiny particles and reducing dust.

[0011] In order to solve the technical problem of how to realize the waist-shaped speaker hole, the present invention adopts the following technical solution: the length L of the ventilation hole is 2-5 times the width of the ventilation hole; the inlet of the ventilation hole is larger than the outlet of the ventilation hole; The ventilation holes are arranged in rows; the ventilation holes in each row are arranged sequentially and at intervals along the length direction of a single ventilation hole, and the corresponding ventilation holes in adjacent rows are arranged in a staggered manner to avoid dead zones as much as possible, thereby obtaining the best ventilation effect.

[0012] In order to solve the technical problem of how to arrange the waist-shaped trumpet holes on the track shoe, the present invention adopts the following technical solution: the waist-shaped trumpet holes are arranged along the length direction of the track shoe, and the length direction of the waist-shaped trumpet holes is arranged perpendicular to the movement direction of the track shoe; Or the waist-shaped trumpet hole is arranged along the width direction of the track shoe, and the length direction of the waist-shaped trumpet hole is arranged parallel to the movement direction of the track shoe; Alternatively, the waist-shaped trumpet hole is obliquely arranged on the track shoe, and an angle A is formed between the waist-shaped trumpet hole and the moving direction of the track shoe, and A is 40-50°.

[0013] In order to solve the technical problem of how to clean the material stuck in the track plate of the existing micro-particle dryer, the present invention adopts the following technical solution, wherein the drying and conveying mechanism also includes a clearing mechanism, which is used to clean the material stuck in the ventilation holes of the conveyor belt. In order to solve the technical problem of how to realize the clearing mechanism, the present invention adopts the following technical solution, wherein the drying and conveying mechanism also includes a clearing mechanism, including: High pressure blower; An air outlet pipe is arranged at an air outlet of the high-pressure blower; A pneumatic gun is connected to the air outlet pipe, and an air inlet and an air outlet are arranged on the pneumatic gun, and the air inlet is connected to the air outlet of the air outlet pipe; the air outlet is axially arranged on the side wall of the pneumatic gun; the pneumatic gun is used for spraying and cleaning the conveyor belt, and can be cleaned online in real time.

[0014] In order to solve the technical problem of how to arrange the pneumatic gun, the present invention adopts the following technical solution, wherein the pneumatic gun is located on the outside or inside of the conveyor belt; The pneumatic gun spans the width of the conveyor belt; The pneumatic gun is located at the position of the conveyor belt after unloading and before reloading, that is, the position of the lower conveyor belt after unloading and the position of the turning point of the conveyor belt.

[0015] In order to solve the technical problem of how to arrange the air inlet of the air gun, the present invention adopts the following technical solution: the air inlet of the air gun is arranged at one end of the air gun or at both ends of the air gun.

[0016] In order to solve the technical problem of how to arrange the air inlet of the pneumatic gun, the present invention adopts the following technical solution: a plurality of air inlets of the pneumatic gun are evenly distributed on the side wall of the pneumatic gun along the axial direction of the pneumatic gun.

[0017] In order to solve the technical problem of how to arrange the air inlet of the pneumatic gun, the present invention adopts the following technical solution, the number of the air inlet is 1, and the 1 air inlet is located in the middle of the pneumatic gun; Or the number of the air inlets is 2, and the 2 air inlets are arranged in parallel; Or the number of the air inlets is 4, or the 4 air inlets are arranged in parallel; or among the 4 air inlets, every 2 air inlets are arranged in parallel to form an air inlet group; the air inlet groups are arranged in parallel.

[0018] In order to solve the technical problem of how to arrange the air inlet of the air gun, the present invention adopts the following technical solution: the air inlet of the air gun includes a first air inlet and a second air inlet; the first air inlet is evenly distributed at both ends of the air gun; the second air inlet is evenly distributed on the side wall of the air gun along the axial direction of the air gun.

[0019] In order to solve the above technical problems, the present invention adopts the following technical solution: the pneumatic gun includes a first pneumatic gun and a second pneumatic gun, and the first pneumatic gun and the second pneumatic gun are arranged in an inverted V shape; An air inlet of the air gun is arranged on the side wall of the air gun; the air inlet of the air gun is connected to an air outlet main pipe via a corresponding air outlet branch pipe; the air outlet main pipe is connected to the high-pressure fan; The side wall of the second wind gun is provided with a second wind gun air inlet; the second wind gun air inlet is connected to the second air outlet main pipe via the corresponding second air outlet branch pipe; the second air outlet main pipe is connected to the second high-pressure fan.

[0020] In order to solve the technical problem of how to realize the air outlet of the wind gun, the present invention adopts the following technical solution: the inner side of the cross section of the wind gun is square or circular, and the outer side of the cross section of the wind gun is triangular; the air outlet is located at the vertex of the triangle; Or the cross section of the wind gun is circular, and the air outlet is axially arranged on the side wall of the wind gun; The air outlet of the pneumatic gun is a plurality of rows of elongated holes, a plurality of round holes, a plurality of square holes or a plurality of waist-shaped holes.

[0021] In order to solve the technical problem of how to clean the track plate of the existing micro-particle dryer after the material is stuck, the present invention adopts the following technical solution, the blocking removal mechanism includes an air bag, a blowing pipe, and a nozzle and a solenoid valve arranged on the blowing pipe, the air bag is used to store compressed air; the blowing pipe is located at the position of the conveyor belt after unloading and before reloading, that is, the position of the lower conveyor belt after unloading, and the position of the turning point of the conveyor belt; When the air bag pressure reaches the set value, the solenoid valve opens, and the high-pressure gas flows through the air bag to the nozzle to spray the conveyor belt.

[0022] In order to further solve the technical problem of how to clean the track plate of the existing micro-particle dryer after the material is stuck, the present invention adopts the following technical solution, wherein the drying conveying mechanism also includes a conveyor belt cleaning mechanism, including: High pressure water pump; A water outlet main pipe, arranged at the water outlet of the high-pressure water pump; A first cleaning pipe is connected to the water outlet pipe via a first water outlet branch pipe, and a first nozzle is arranged on the first cleaning pipe; the first cleaning pipe is used to clean the upper conveyor belt; The second cleaning pipe is connected to the water outlet pipe via the second water outlet branch pipe, and a second nozzle is arranged on the second cleaning pipe; the second cleaning pipe is used for cleaning the lower conveyor belt.

[0023] In order to solve the technical problem of how to control the conveyor belt cleaning mechanism, the present invention adopts the following technical solution: a main control valve and a pressure gauge are arranged on the water outlet pipe; A first sub-control valve is provided on the first water outlet branch pipe; a first water inlet is provided on the first cleaning pipe; A second sub-control valve is arranged on the second water outlet branch pipe; and a second water inlet is arranged on the second cleaning pipe.

[0024] The second object of the present invention is to provide a drying machine, comprising a box, wherein the drying and conveying mechanism described in any one of the above items is arranged in the box. The horizontal drying machine has the advantages of adjustable material layer thickness, controllable discharge temperature, and convenient cleaning.

[0025] In order to solve the technical problem of leakage of the existing micro-particle dryer due to the small size of the particles, the present invention adopts the following technical solution, wherein the dryer also includes a sealing mechanism, including: A first guard plate is arranged on the box body of the dryer; an elastic sealing plate is arranged on the first guard plate; and a wear-resistant sealing plate is arranged on the elastic sealing plate; A second guard plate is arranged on the track plate of the conveyor belt, and the wear-resistant sealing plate is in elastic contact with the second guard plate.

[0026] The present invention adopts a multi-sealing structure, wherein the first guard plate is the first seal, the second guard plate is the second seal, the wear-resistant sealing plate is the third seal, and the elastic sealing plate is the fourth seal. A wear-resistant sealing plate and an elastic sealing plate are installed between the first and second guard plates to prevent small particles from being blown away by the wind and to avoid leakage from the gap between the large and small guard plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the ventilation holes of the existing dryer track shoe; Figure 2 It is a schematic diagram of the structure of the drying and conveying mechanism of the present invention; Figure 3 Schematic diagram of the structure of the ventilation hole of the crawler shoe of the present invention, wherein: Figure 3 a is a schematic diagram of the ventilation hole structure of the crawler shoe of the present invention Figure 1 ; Figure 3 b is a schematic diagram of the ventilation hole structure of the crawler shoe of the present invention Figure 2 ; Figure 3 c is a schematic diagram of the ventilation hole structure of the crawler shoe of the present invention Figure 3 ; Figure 3 d is Figure 3 A magnified view of the ventilation holes of the track shoe; Figure 4 yes Figure 2 A magnified view of middle; Figure 5 a is Figure 2 Enlarged view of middle B; Figure 5 b is a comparison diagram of non-flared waist-shaped holes; Figure 6 It is a schematic diagram of the positional relationship between the blockage clearing mechanism and the conveyor belt of the present invention; Figure 7It is a structural schematic diagram of the first blockage clearing mechanism of the present invention; Figure 8 It is a structural schematic diagram of the second blockage clearing mechanism of the present invention; Fig. 9 This is the air intake structure diagram of the first (second) air gun of the present invention, wherein: Fig. 9 a is the air intake structure of the first (second) air gun of the present invention Figure 1 ; Fig. 9 b is the air intake structure of the first (second) air gun of the present invention Figure 2 ; Fig. 9 c is the air intake structure of the first (second) air gun of the present invention Figure 3 ; Fig. 9 d is the air intake structure of the first (second) air gun of the present invention Figure 4 ; Fig. 9 e is the air intake structure of the first (second) air gun of the present invention Figure 5 ; Fig. 9 f is the air intake structure of the first (second) air gun of the present invention Figure 6 ; Fig. 9 g is the air intake structure of the first (second) air gun of the present invention Figure 7 ; Fig.10 1 is a cross-sectional view of the first (second) pistol of the present invention, wherein: Fig.10 a is a cross section of the first (second) pistol of the present invention Figure 1 ; Fig.10 b is a cross section of the first (second) pistol of the present invention Figure 2 ; Fig.10 c is a cross section of the first (second) pistol of the present invention Figure 3 ; Fig.11 is a schematic diagram of a conveyor belt cleaning mechanism of the present invention; Fig.12 It is a three-dimensional diagram of the first and second cleaning pipes of the conveyor belt cleaning mechanism of the present invention; Fig.13 It is a schematic diagram of a combination scheme of the pneumatic gun blockage clearing mechanism and the conveyor belt cleaning mechanism of the present invention; Fig.14 is a schematic diagram of the sealing mechanism of the drying machine of the present invention; Fig.15 It is a three-dimensional micro-particle horizontal drying machine of the present invention. Figure 1 ; Fig.16 It is a three-dimensional micro-particle horizontal drying machine of the present invention. Figure 2 ; In the figure: 111' existing track shoes; 1110' existing ventilation holes; 1110'' non-flared waist ventilation holes; 10 Dryer; 100 drying conveying mechanism; 110 conveyor belt; 111 track shoe; 1110 ventilation hole; 200 traffic clearing agencies; 210 first blockage clearing mechanism; 211 first high-pressure fan; 2111 first high-pressure fan one; 2112 first high-pressure fan two; 212 first air outlet pipe; 2121 first air outlet main pipe; 21211 first air outlet main pipe 1; 21212 first air outlet main pipe 2; 2122 first T-shaped connecting pipe; 2123 first connecting straight pipe; 2124 first connecting elbow pipe; 213 the first air gun; 2131 the air inlet; 21311 the first air inlet; 21312 the second air inlet; 2132 the air outlet; 2133 the first air gun one; 2134 the first air gun two; 220 second blockage clearing mechanism; 221 second high-pressure blower; 222 second air outlet pipe; 2221 second air outlet main pipe; 2222 second T-shaped connecting pipe; 2223 second connecting straight pipe; 2224 second connecting elbow pipe; 223 Second Wind Gun; 300 conveyor belt cleaning mechanism; 310 high pressure water pump; 320 water outlet main pipe; 321 first water outlet branch pipe; 322 second water outlet branch pipe; 330 first cleaning pipe; 331 first nozzle; 332 first water inlet; 333 first mounting plate; 334 first blind plate; 340 second cleaning pipe; 341 second nozzle; 342 second water inlet; 343 second mounting plate; 344 second blind plate; 351 main control valve; 352 first sub-control valve; 353 second sub-control valve; 360 pressure gauge; 400 sealing mechanism; 401 first guard plate; 402 second guard plate; 403 elastic sealing plate; 404 wear-resistant sealing plate; 500 box body; 511 upper water outlet; 512 lower water outlet; 600 conveyor belt reducer; 700 material layer; 701 tiny particles. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Example 1 like Figure 2 As shown, the drying conveying mechanism 100 includes a conveyor belt 110 for conveying the material layer 700. Preferably, the conveyor belt 110 adopts the conveyor belt structure disclosed in the Chinese utility model patent specification with the announcement number CN206203220U and the invention name "a leakage-proof ventilated conveyor belt". The conveyor belt 110 includes a plurality of track shoes 111. The track shoes 111 are provided with ventilation holes 1110, and the ventilation holes 1110 are waist-shaped trumpet holes.

[0030] In one embodiment, Figure 3 As shown in FIG. d , the length L of the ventilation hole 1110 is 2-5 times the width of the ventilation hole; the inlet of the ventilation hole 1110 is larger than the outlet of the ventilation hole 1110 .

[0031] The ventilation holes of the crawler shoe of the present invention adopt a waist-shaped trumpet hole design, which has the advantage that one side of the hole is large and the other side is small. The side with the small hole contacts the small particles. The trumpet hole design allows the maximum diameter of the small particles to contact the hole only once. Figure 3 d. Figure 5 a. Figure 5 b. If individual small particles are stuck in the hole due to the force of the material layer and the wind, they can easily pass through the thin plate due to the wind or the gravity of the material itself. Moreover, half of the circumference of the maximum diameter of the small particles does not touch the hole, which reduces the resistance of the hole wall to the stuck particles passing through the hole. The probability of material blockage and the difficulty of cleaning are reduced from the structural design. In addition, in order to prevent particles from falling, the diameter of the particles is larger than the minimum diameter of the through hole. For circular holes, if the particles are stuck and cleaned, it means that the particles are cut in the entire circumferential direction, while for waist-shaped trumpet holes, only the contact between the particles and the hole wall will be cut, which can reduce the damage of tiny particles and reduce dust.

[0032] In one embodiment, the ventilation holes are arranged in rows; each row of ventilation holes is arranged sequentially and spaced along the length direction of a single ventilation hole, and the corresponding ventilation holes in adjacent rows are arranged in a staggered manner. The waist-shaped holes are arranged along their length direction to form a "row". Several "rows" constitute the through-hole combination of the entire track shoe. Preferably, the holes between adjacent "rows" are staggered to avoid dead zones as much as possible, so as to obtain the best ventilation effect. In one embodiment, Figure 3 As shown in a, the waist-shaped trumpet hole is arranged along the length direction of the track shoe, and the length direction of the waist-shaped trumpet hole is arranged perpendicular to the movement direction of the track shoe. In one embodiment, Figure 3As shown in b, the waist-shaped trumpet hole is arranged along the width direction of the track shoe, and the length direction of the waist-shaped trumpet hole is arranged parallel to the movement direction of the track shoe. The length direction of the waist-shaped trumpet hole is parallel to the movement direction of the track shoe. The shape of the waist-shaped hole is longer along the movement direction, firstly to ensure the strength of the track shoe; secondly, to extend the time that a single waist-shaped hole is blown by the wind gun.

[0033] In one embodiment, Figure 3 As shown in Figure c, the waist-shaped trumpet hole is tilted on the track plate, and an angle A is formed between the waist-shaped trumpet hole and the movement direction of the track plate, and A is 40-50°. Preferably, the waist-shaped trumpet hole is at an angle of 45° to the track plate. This embodiment balances the advantages of the above two embodiments. First, the strength of the track plate is ensured; second, the time that a single waist-shaped hole is blown by the wind gun is extended; third, the dead zone is avoided as much as possible to obtain the best ventilation effect. Since the area of ​​a waist-shaped speaker hole is larger than that of a round speaker hole, Figure 3 d. Therefore, for track shoes with the same opening rate, the number of waist-shaped trumpet holes should be less, the cost is lower, or a larger opening rate can be obtained while ensuring the strength of the track shoes, which can improve the ventilation efficiency and thus improve the drying efficiency.

[0034] like Figure 6 As shown, the drying and conveying mechanism 100 further includes a clearing mechanism 200 for clearing the material stuck in the ventilation holes of the conveyor belt.

[0035] In one embodiment, the blockage clearing mechanism 200 includes a first blockage clearing mechanism 210 and a second blockage clearing mechanism 220 .

[0036] The first clearing mechanism 210 is used to clear the upper conveyor belt of the dryer. Figure 7 As shown, the first clearing mechanism 210 includes a first high-pressure fan 211, a first air outlet pipe 212, and a first air gun 213. Preferably, the first air outlet pipe 212 includes a first air outlet main pipe 2121, a first T-shaped connecting pipe 2122, a first connecting straight pipe 2123, and a first connecting elbow 2124.

[0037] The first air outlet pipe 2121 is installed on the air outlet of the first high-pressure fan 211. The first air outlet pipe 2121 is connected to the middle of the first T-shaped connecting pipe 2122. Both sides of the first T-shaped connecting pipe 2122 are connected to the first air gun 213 via the corresponding first connecting straight pipe 2123, the first connecting elbow 2124, the first connecting straight pipe 2123, the first connecting elbow 2124, and the first connecting straight pipe 2123. The first wind gun 213 is connected to the air outlet pipe, and is provided with an air inlet 2131 and an air outlet 2132. The air inlet 2131 is connected to the air outlet of the first air outlet pipe 212; the air outlet 2132 is axially arranged on the side wall of the first wind gun 213; the first wind gun 213 is used for blowing and cleaning the conveyor belt.

[0038] In one embodiment, the first pneumatic gun 213 is located at the position of the conveyor belt after unloading and before reloading. Preferably, it is located at the position of the lower conveyor belt after unloading and at the bend of the conveyor belt. The first pneumatic gun 213 can be located on the outside of the conveyor belt 110 or on the inside of the conveyor belt 110. The first pneumatic gun 213 spans the width of the conveyor belt. Preferably, the first pneumatic gun 213 spans the entire width of the track shoe on the inside of the track shoe and can be installed at any position of the track shoe after unloading and before reloading, preferably at the bend of the track shoe.

[0039] The second clearing mechanism 220 is used to clear the lower conveyor belt of the dryer. Figure 8 As shown, the second clearing mechanism 220 includes a second high-pressure fan 221, a second air outlet pipe 222, and a second air gun 223. Preferably, the second air outlet pipe 222 includes a second air outlet main pipe 2221, a second T-shaped connecting pipe 2222, a second connecting straight pipe 2223, and a second connecting elbow 2224.

[0040] The second air outlet pipe 2221 is installed on the air outlet of the second high-pressure fan 221. The second air outlet pipe 2221 is connected to the middle of the second T-shaped connecting pipe 2222. Both sides of the second T-shaped connecting pipe 2222 are connected to the second air gun 223 via the corresponding second connecting straight pipe 2223, the second connecting elbow pipe 2224, the second connecting straight pipe 2223, the second connecting elbow pipe 2224, and the second connecting straight pipe 2223. The second wind gun 223 is connected to the air outlet pipe, and is provided with an air inlet 2131 and an air outlet 2132. The air inlet 2131 is connected to the air outlet of the second air outlet pipe 222; the air outlet 2132 is axially arranged on the side wall of the second wind gun 223; the second wind gun 223 is used for blowing and cleaning the conveyor belt.

[0041] In one embodiment, the second air gun 223 is located at the position of the conveyor belt after unloading and before reloading. Preferably, the position of the lower conveyor belt after unloading or the position of the bend of the conveyor belt. The second air gun 223 can be located either on the outside of the conveyor belt 110 or on the inside of the conveyor belt 110. Figure 6 The advantage of being on the inside is that the residue at the bend of the conveyor belt can be blown out from the inside to the outside. The second air gun 223 spans the width of the conveyor belt. Preferably, the second air gun 213 spans the entire width of the track shoe on the inside of the track shoe and can be installed at any position after the track shoe is unloaded and before it is reloaded, preferably at the bend of the track shoe.

[0042] like Fig. 9 As shown in a-9g, the first or second wind gun has different air intake modes, including end air intake, middle air intake and average interval air intake, and also equipped with a single high-pressure fan, two high-pressure fans or even more high-pressure fans. Since the track plate is long (the longest is close to 3.5 meters), two or more fans, and the air flow speed and air pressure of the air intake at the average interval are more uniform, and the cleaning effect is the best.

[0043] In one embodiment, Fig. 9 As shown in FIG. 5 , the air inlet 2131 of the first wind gun 213 or the second wind gun 223 can be located at one end of the first wind gun 213 or the second wind gun 223. After the high-pressure fan comes out, only one path is left, and then enters from one end of the wind gun. With a single fan and a single air inlet, especially with end air intake, the airflow will be more concentrated at the tail, and the wind speed at the tail will be the highest, the air intake position will be the smallest, and the cleaning effect will be the worst.

[0044] like Fig. 9 As shown in FIG. d, the air inlet 2131 of the first wind gun 213 or the second wind gun 223 can also be located at both ends of the first wind gun 213 or the second wind gun 223. After coming out of the high-pressure fan, it is divided into two paths and then enters from both ends of the wind gun.

[0045] In one embodiment, the air inlet 2131 of the first wind gun 213 or the second wind gun 223 may also be located on the side wall thereof and evenly distributed in the axial direction.

[0046] In one embodiment, Fig. 9 As shown in FIG. 5 , the number of air inlets 2131 on the side wall of the first wind gun 213 or the second wind gun 223 can be 1. After the high-pressure fan comes out, only one path is left, and then enters from the middle of the wind gun.

[0047] In one embodiment, the number of the air inlets 2131 on the side wall of the first wind gun 213 or the second wind gun 223 may also be 2. Preferably, the two air inlets are arranged in parallel.

[0048] In one embodiment, the number of the air inlets 2131 on the side wall of the first wind gun 213 or the second wind gun 223 can also be four. like Fig. 9 As shown in a, 4 air inlets can be set in parallel. After the high-pressure fan comes out, it is divided into four paths and connected to the air gun, and the two ends of the air gun are blocked with plugs.

[0049] like Fig. 9 As shown in c, the four air inlets can also adopt the following structure: every two air inlets are arranged in parallel to form an air inlet group; the air inlet groups are arranged in parallel. There are two high-pressure fans, each responsible for at least two routes.

[0050] In one embodiment, Fig. 9 As shown in FIG. 2 , the air inlet 2131 of the first wind gun 213 or the second wind gun 223 can also adopt a combination of end air inlet and side wall air inlet. After the high-pressure fan comes out, it is divided into four paths, two of which are connected to the top of the wind gun, and the other two are connected to the two ends of the wind gun. Specifically, the air inlet 2131 of the first wind gun 213 or the second wind gun 223 includes a first air inlet 21311 and a second air inlet 21312. The first air inlet 21311 is evenly distributed at both ends of the first wind gun 213 or the second wind gun 223. The second air inlet 21312 is evenly distributed on the side wall of the first wind gun 213 or the second wind gun 223 along the axial direction of the wind gun.

[0051] In one embodiment, Fig. 9 As shown in FIG. 6 , this embodiment has two high-pressure fans, each of which is responsible for at least two routes, and the wind guns are arranged in a V shape. Specifically, the first wind gun 213 includes a first wind gun 1 2133 and a first wind gun 2134, and the first wind gun 1 2133 and the first wind gun 2134 are arranged in an inverted V shape. Two air inlets 2131 are arranged in parallel on the side wall of the first air gun 2133. The two air inlets 2131 are connected to the first air outlet main pipe 21211 via the corresponding air outlet branch pipe 2125; the first air outlet pipe 21211 is connected to the first high-pressure fan 2111.

[0052] Two air inlets 2131 are arranged in parallel on the side wall of the first air gun 2134. The two air inlets 2131 are connected to the first air outlet main pipe 21212 via the corresponding air outlet branch pipe 2126; the first air outlet pipe 2 is connected to the first high-pressure fan 2112.

[0053] The air guns are arranged in a V-shape, and each high-pressure fan is divided into two paths and corresponds to one air gun. The advantage is that each high-pressure fan operates independently, and the wind direction blown out by the V-shaped arrangement is concentrated inward, preventing small particles from being blown out of the conveyor belt and unable to be cleaned by the sweeper.

[0054] The air outlet of the first wind gun 213 or the second wind gun 223 is adjustable at multiple angles because of space requirements. Figure 6 It is presented as cleaning perpendicular to the track shoe, and the cross-section is in the form of circular tube and polygon, with single or multiple rows of slender holes, as well as multiple circular holes, square holes or waist-shaped holes, etc. Different forms correspond to different wind speed distributions and cleaning effects.

[0055] In one embodiment, Fig.10As shown in FIG. 1 , the first wind gun 213 or the second wind gun 223 has a square cross section inside and a triangle cross section outside; the air outlet is located at the vertex of the triangle. The square cross section and the triangle cross section have many edges and corners, and the wind is easy to generate turbulence inside, and the wind speed out is uneven, which is not conducive to the cleaning of the crawler shoe.

[0056] In one embodiment, Fig.10 As shown in FIG. 3 , the inner side of the cross section of the first wind gun 213 or the second wind gun 223 is circular, and the outer side of the cross section is triangular; the air outlet is located at the vertex of the triangle. The combination of the circular cross section and the triangular cross section allows the airflow to be concentrated and ejected from the lower opening of the triangular cross section after entering, resulting in a more uniform airflow distribution and relatively small wind resistance, which is the optimal solution.

[0057] In one embodiment, Fig.10 As shown in FIG. 2 , the cross section of the first wind gun 213 or the second wind gun 223 is circular, and the air outlet is axially arranged on the side wall of the wind gun. The circular airflow will generate vortices inside and the ejected airflow is divergent.

[0058] The clearing mechanism adopts online punching technology (OPT for short), which consists of a high-pressure fan, a pneumatic gun, and an air outlet pipe. It is installed outside or inside the conveyor belt to clean the mesh holes on the conveyor belt.

[0059] When the pneumatic gun blows the track plate at a bend, the dust goes directly to the cleaning auger; when the pneumatic gun blows the track plate horizontally, the dust goes to the bottom plate and then goes to the cleaning auger through the cleaner. Figure 4 As shown, most of the tiny particles 701 will be blown out from the gaps between the track shoes by the wind, and then fall on the bottom plate under the track shoes. The conveyor belt has a built-in sweeper to scrape the small particles remaining on the bottom plate into the powder cleaning auger at the head or tail of the dryer; a small part of the particles will be stuck in the track shoe holes again, and the air outlet of the wind gun will have airflows at multiple angles blowing to the track shoe holes, and the trumpet hole has a large hole area at the air inlet and a small hole area at the air outlet. Under the same flow rate, the wind speed will become larger, so the cleaning effect is better, and the small particles blown out will also fall on the bottom plate and be taken away by the sweeper.

[0060] In one embodiment, the clearing mechanism is composed of an air bag, a nozzle, a solenoid valve and a control box, etc. The clearing mechanism is intermittent and sprays the conveyor belt. The air bag stores compressed air. When the air bag pressure reaches the set value, the solenoid valve opens the valve, and the high-pressure gas flows through the air bag to the nozzle for spraying. The cleaning position is the same as the air gun mechanism. For details, please refer to the Chinese invention patent CN112999784A.

[0061] Intermittent cleaning, due to long-term cleaning, small particles and surface dust and grease are easy to stick to the track plate, thus affecting the cleaning effect. The advantage of the pneumatic gun clearing mechanism is that it can be cleaned online in real time, and it is not easy to block the holes on the track plate when cleaning continuously.

[0062] In one embodiment, Fig.11 , Fig.12 As shown, the drying conveying mechanism 100 further includes a conveyor belt cleaning mechanism 300 for intermittently cleaning the conveyor belt. The conveyor belt cleaning mechanism 300 includes a high-pressure water pump 310, a water outlet main pipe 320, a first cleaning pipe 330, and a second cleaning pipe 340.

[0063] The outlet of the high-pressure water pump 310 is provided with a water outlet pipe 320. Preferably, the water outlet pipe 320 is provided with a main control valve 351 and a pressure gauge 360. The water outlet pipe 320 is provided with a first water outlet branch pipe 321 and a second water outlet branch pipe 322 in parallel.

[0064] The first cleaning pipe 330 is used to clean the upper conveyor belt. Fig.12 As shown, a first water inlet 332 is installed at one end of the first cleaning pipe 330, and a first blind plate 334 is installed at the other end of the first cleaning pipe 330. The first water inlet 332 is connected to the first water outlet branch pipe 321. The first nozzles 331 are evenly distributed along the length direction of the first cleaning pipe 330. The first nozzles 331 are arranged perpendicularly to the first cleaning pipe 330. A first sub-control valve 352 is arranged on the first water outlet branch pipe 321. A first mounting plate 333 is installed on the first cleaning pipe 330 at the end of the first water inlet 332, which is used to mount the first cleaning pipe on the housing of the dryer.

[0065] The second cleaning pipe 340 is used to clean the lower conveyor belt. Fig.12 As shown, a second water inlet 342 is installed at one end of the second cleaning pipe 340, and a second blind plate 344 is installed at the other end. The second water inlet 342 is connected to the second water outlet branch pipe 322. The second cleaning pipe 340 is evenly distributed with second nozzles 341 along the length direction. The second nozzles 341 are vertically arranged between the second cleaning pipe 340. A second sub-control valve 353 is arranged on the second water outlet branch pipe 322. A second mounting plate 343 is installed on the first cleaning pipe 330 at the second water inlet 332 end, which is used to mount the second cleaning pipe on the box body of the dryer.

[0066] This embodiment uses high-pressure water to wash the conveyor belt, which is suitable for intermittent cleaning. After the high-pressure water washes the track plate, if the water stains on the track plate are not cleaned in time, the moisture content of the dry material will exceed the standard, and it may also cause small particles to stick to the material. Fig.13 As shown, the present invention combines a conveyor belt cleaning mechanism with a blockage clearing mechanism: high-pressure water can provide sufficient pressure to clean the inner and outer surfaces of the track plate, and then the water stains on the surface are blown dry by a pneumatic gun.

[0067] Example 2 like Fig.15 , Fig.16 The dryer 10 comprises a feeding section, a drying section and a discharging section.

[0068] The drying section includes a box body 500, in which the drying conveying mechanism 100 and the conveyor belt reducer 600 of any one of the embodiments 1 are arranged. Preferably, the number of the drying conveying mechanisms 100 is 2, arranged from top to bottom. The lower drying conveying mechanism is used to receive the material from the upper drying conveying mechanism and convey the material to the discharge port. A partition is arranged between the lower drying conveying mechanism and the upper drying conveying mechanism.

[0069] The upper drying and conveying mechanism comprises an upper conveying belt, a first clearing mechanism, and a first cleaning pipe. The first clearing mechanism is located at the discharge end of the upper conveying belt. The first cleaning pipe is located at the feed end of the upper conveying belt.

[0070] The lower drying conveying mechanism includes a lower conveying belt, a second clearing mechanism, and a second cleaning pipe. The second clearing mechanism is located at the discharge end of the lower conveying belt. The second cleaning pipe is located at the feed end of the lower conveying belt. The first clearing mechanism and the second clearing mechanism are respectively located on both sides of the box. The first clearing mechanism is preferably located at the upper part of the discharge end. The first cleaning pipe and the second cleaning pipe are respectively located on both sides of the box.

[0071] In one embodiment, Fig.14 As shown, the drying machine 10 further includes a sealing mechanism 400 , which includes a first guard plate 401 and a second guard plate 402 .

[0072] The first guard plate 401 is mounted on the housing 500 of the drying machine 10. An elastic sealing plate 403 is mounted on the outer side of the first guard plate 401. The elastic sealing plate 403 is preferably a silicone plate. A wear-resistant sealing plate 404 is mounted on the outer side of the elastic sealing plate 403. The wear-resistant sealing plate is made of high-temperature resistant engineering plastics, which has a lower hardness than stainless steel, to avoid the situation where iron rubs against iron and damages each other.

[0073] The second guard plate 402 is installed on the track shoe 111 of the conveyor belt 110. The second guard plate 402 is located outside the wear-resistant sealing plate 404. The second guard plate 402 is in elastic contact with the elastic sealing plate 403.

[0074] The elastic sealing plate and the wear-resistant sealing plate are sequentially mounted on the large guard plate. The wear-resistant sealing plate is in contact and friction with the small guard plate. The elastic sealing plate functions to make the wear-resistant sealing plate in elastic contact with the small guard plate.

[0075] In the initial stage, the second guard plate and the wear-resistant sealing plate fit each other due to interference fit. As the conveyor belt runs, the second guard plate and the wear-resistant sealing plate adaptively adjust the clamping force to ensure the sealing effect.

[0076] The present invention adopts a multi-sealing structure, wherein the first guard plate is the first seal, the second guard plate is the second seal, the wear-resistant sealing plate is the third seal, and the elastic sealing plate is the fourth seal. A wear-resistant sealing plate and an elastic sealing plate are installed between the first and second guard plates to prevent small particles from being blown away by the wind and to avoid leakage from the gap between the large and small guard plates.

[0077] An upper water outlet 511 is installed on the box body 500 to discharge the waste water from cleaning the upper conveyor belt. A lower water outlet 512 is installed on the box body 500 to discharge the waste water from cleaning the conveyor belt. The upper water outlet 511 and the lower water outlet 512 are respectively located on both sides of the box body 500. The waste water after cleaning the upper conveyor belt is collected at the partition, discharged from the upper water outlet and collected in the water collection tank. The waste water after cleaning the lower conveyor belt is collected at the bottom plate of the dryer, discharged from the lower water outlet and collected in the water collection tank.

[0078] The above-mentioned implementation modes are only for illustrating the technical features and concepts of the present invention, and their purpose is to enable technicians familiar with this technology in the field to understand the contents of the present invention and implement them. They cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and implementation modes of the present invention should be included in the protection scope of the present invention.

Claims

1. A drying conveying mechanism, comprising a conveyor belt, wherein the conveyor belt comprises a plurality of track shoes, wherein: The track shoe is provided with ventilation holes, and the ventilation holes are waist-shaped trumpet holes.

2. The drying and conveying mechanism according to claim 1, characterized in that: The length L of the ventilation hole is 2-5 times the width of the ventilation hole; the inlet of the ventilation hole is larger than the outlet of the ventilation hole; The ventilation holes are arranged in rows; the ventilation holes in each row are arranged sequentially and at intervals along the length direction of a single ventilation hole, and the corresponding ventilation holes in adjacent rows are arranged in a staggered manner.

3. The drying and conveying mechanism according to claim 1 or 2, characterized in that: The waist-shaped trumpet hole is arranged along the length direction of the track shoe, and the length direction of the waist-shaped trumpet hole is arranged perpendicular to the movement direction of the track shoe; Or the waist-shaped trumpet hole is arranged along the width direction of the track shoe, and the length direction of the waist-shaped trumpet hole is arranged parallel to the movement direction of the track shoe; Alternatively, the waist-shaped trumpet hole is obliquely arranged on the track shoe, and an angle A is formed between the waist-shaped trumpet hole and the moving direction of the track shoe, and A is 40-50°.

4. The drying and conveying mechanism according to claim 1, 2 or 3, characterized in that: It also includes a clearing mechanism for clearing the stuck material in the ventilation holes of the conveyor belt.

5. The drying and conveying mechanism according to claim 4, characterized in that: The blocking clearing mechanism comprises: High pressure blower; An air outlet pipe is arranged at an air outlet of the high-pressure blower; A pneumatic gun is connected to the air outlet pipe, and an air inlet and an air outlet are arranged on the pneumatic gun, and the air inlet is connected to the air outlet of the air outlet pipe; the air outlet of the pneumatic gun is arranged on the side wall of the pneumatic gun; the pneumatic gun is used for blowing and cleaning the conveyor belt.

6. The drying and conveying mechanism according to claim 5, characterized in that: The pneumatic gun is located on the outside or inside of the conveyor belt; The pneumatic gun spans the width of the conveyor belt; The pneumatic gun is located at the position of the conveyor belt after unloading and before reloading, that is, the position of the lower conveyor belt after unloading and the position of the turning point of the conveyor belt.

7. The drying and conveying mechanism according to claim 6, characterized in that: The air inlet of the pneumatic gun is arranged at one end of the pneumatic gun or at both ends of the pneumatic gun.

8. The drying and conveying mechanism according to claim 6, characterized in that: A plurality of air inlets of the air gun are evenly distributed on the side wall of the air gun along the axial direction of the air gun.

9. The drying and conveying mechanism according to claim 6, characterized in that: The number of the air inlet is 1, and the 1 air inlet is located in the middle of the air gun; Or the number of the air inlets is 2, and the 2 air inlets are arranged in parallel; Or the number of the air inlets is 4, or the 4 air inlets are arranged in parallel; or among the 4 air inlets, every 2 air inlets are arranged in parallel to form an air inlet group; the air inlet groups are arranged in parallel.

10. The drying and conveying mechanism according to claim 6, characterized in that: The air inlet of the pneumatic gun includes a first air inlet and a second air inlet; the first air inlet is evenly distributed at both ends of the pneumatic gun; the second air inlet is evenly distributed on the side wall of the pneumatic gun along the axial direction of the pneumatic gun.

11. The drying and conveying mechanism according to claim 6, characterized in that: The pneumatic gun includes pneumatic gun 1 and pneumatic gun 2, and the pneumatic gun 1 and pneumatic gun 2 are arranged in an inverted V shape; An air inlet of the air gun is arranged on the side wall of the air gun; the air inlet of the air gun is connected to an air outlet main pipe via a corresponding air outlet branch pipe; the air outlet main pipe is connected to the high-pressure fan; The side wall of the second wind gun is provided with a second wind gun air inlet; the second wind gun air inlet is connected to the second air outlet main pipe via the corresponding second air outlet branch pipe; the second air outlet main pipe is connected to the second high-pressure fan.

12. The drying and conveying mechanism according to claim 5, characterized in that: The inner side of the cross section of the pneumatic gun is square or circular, and the outer side of the cross section of the pneumatic gun is triangular; the air outlet of the pneumatic gun is located at the vertex of the triangle; Or the cross section of the pneumatic gun is circular, and the air outlet of the pneumatic gun is axially arranged on the side wall of the pneumatic gun; The air outlet of the pneumatic gun is a plurality of rows of elongated holes, a plurality of round holes, a plurality of square holes or a plurality of waist-shaped holes.

13. The drying and conveying mechanism according to claim 4, characterized in that: The clearing mechanism includes an air bag, a blowing pipe, a nozzle and a solenoid valve arranged on the blowing pipe, wherein the air bag is used to store compressed air; the blowing pipe is located at the position of the conveyor belt after unloading and before reloading, that is, the position of the lower conveyor belt after unloading and the position of the bend of the conveyor belt; When the air bag pressure reaches the set value, the solenoid valve opens, and the high-pressure gas flows through the air bag to the nozzle to spray the conveyor belt.

14. The drying and conveying mechanism according to claim 4, characterized in that: Includes conveyor belt cleaning mechanism, including: High pressure water pump; A water outlet main pipe, arranged at the water outlet of the high-pressure water pump; A first cleaning pipe is connected to the water outlet pipe via a first water outlet branch pipe, and a first nozzle is arranged on the first cleaning pipe; the first cleaning pipe is used to clean the upper conveyor belt; The second cleaning pipe is connected to the water outlet pipe via the second water outlet branch pipe, and a second nozzle is arranged on the second cleaning pipe; the second cleaning pipe is used for cleaning the lower conveyor belt.

15. The drying and conveying mechanism according to claim 14, characterized in that: The first cleaning pipe is located on the inner side of the upper conveyor belt; The second cleaning pipe is located on the inner side or the outer side of the lower conveyor belt; The water outlet pipe is provided with a main control valve and a pressure gauge; A first sub-control valve is provided on the first water outlet branch pipe; a first water inlet is provided on the first cleaning pipe; A second sub-control valve is arranged on the second water outlet branch pipe; and a second water inlet is arranged on the second cleaning pipe.

16. A horizontal drying machine for micro-particles, comprising a housing, characterized in that: The drying and conveying mechanism according to any one of claims 1 to 14 is arranged in the box.

17. The micro-particle horizontal drying machine according to claim 16, characterized in that: The dryer also includes a sealing mechanism, including: A first guard plate is arranged on the box body of the dryer; an elastic sealing plate is arranged on the first guard plate; and a wear-resistant sealing plate is arranged on the elastic sealing plate; A second guard plate is arranged on the track plate of the conveyor belt, and the wear-resistant sealing plate is in elastic contact with the second guard plate.

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