Cold briquetting vertical dryer and cold briquetting drying system

Abstract

The utility model provides a kind of cold briquet vertical dryer and cold briquet drying system, belong to drying equipment technical field, to improve hot air utilization efficiency, the cold briquet vertical dryer includes outer main machine cylinder (1) and inner main chamber (2), multiple vertical flow guide louvers (3) are provided in inner main chamber (2), and inner main chamber (2) is separated by multiple vertical flow guide louvers (3) into left gas passage (21), left material passage (22), middle cavity (23), right material passage (24) and right gas passage (25) sequentially arranged from left to right, and middle cavity (23) is separated into upper chamber (231) and lower chamber (232) by middle separating component (26).The cold briquet vertical dryer can avoid the formation of hot air short flow, hot air is used in stages, and the equipment eliminates dust dead angle, so that the material is uniformly dried.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a cold-pressed block vertical dryer and a cold-pressed block drying system. Background Technology

[0002] Various manufacturing enterprises generate a large amount of dust and sludge during the production process, which need to be further treated or reused. Cold pressing is one of the processes involved. The cold pressed blocks produced by this process typically have a high moisture content and their strength needs to be improved. They need to be dried and cured to reduce the moisture content and increase the strength of the blocks.

[0003] To process cold-pressed briquettes, drying equipment has emerged in the prior art. For example, Chinese patent document CN103363790A, published on October 23, 2013, discloses a "Dual Heat Source Vertical Dryer and Drying System Using the Dryer." In this dryer, the furnace body is a jacketed structure, comprising an inner liner and an outer shell. The inner liner has an exhaust port that allows air to pass through, and the outer shell also has an exhaust port. However, its drawbacks include direct penetration of hot air from the bottom, low heat utilization, and uneven drying of the inner and outer layers of material. Utility Model Content

[0004] To improve the efficiency of hot air utilization, this utility model provides a cold-pressed block vertical dryer and a cold-pressed block drying system. The cold-pressed block vertical dryer can avoid the formation of hot air short-circuiting, the hot air is utilized in stages, the material is dried evenly, the equipment eliminates dust accumulation dead corners, and the material is dried evenly.

[0005] The technical solution adopted by this utility model embodiment to solve its technical problem is:

[0006] A cold-pressed block vertical dryer includes an outer main cylinder and an inner main chamber. The outer main cylinder is vertical. The inner main chamber is equipped with multiple vertical guide louvers, which divide the inner main chamber into a left gas channel, a left material channel, a central cavity, a right material channel, and a right gas channel arranged from left to right. The central cavity is equipped with a central partition, which divides the central cavity into an upper chamber and a lower chamber arranged vertically. Drying gas can enter from the lower chamber and finally exit from the upper chamber, or drying gas can enter from the upper chamber and finally exit from the lower chamber.

[0007] The cold-pressed block vertical dryer also includes a feeding hopper, which is connected vertically to the outer main cylinder. The feeding hopper has an upper outer wall and an upper inner chamber. The upper end of the upper outer wall is provided with multiple feeding ports, and the upper inner chamber is directly connected to the left material channel and the right material channel.

[0008] A material distribution cone is installed at the lower end of the upper inner chamber. The material distribution cone and the central cavity are arranged vertically. The material distribution cone can guide the material in the upper inner chamber into the left material channel or the right material channel.

[0009] The main compartment is equipped with four vertical flow guide louvers, all of which are upright. From left to right, the four vertical flow guide louvers are the first louver on the left, the second louver on the left, the second louver on the right, and the first louver on the right. The first louver on the left, the second louver on the left, the second louver on the right, and the first louver on the right are all perpendicular to the left and right directions. The middle partition is a sealed structure. Along the vertical direction, the middle part of the second louver on the left is shared with the left part of the middle partition, and the middle part of the second louver on the right is shared with the right part of the middle partition.

[0010] The first louver on the left side contains a left upper louver section, a left middle sealing section, and a left lower louver section arranged sequentially from top to bottom. The first louver on the right side contains a right upper louver section, a right middle sealing section, and a right lower louver section arranged sequentially from top to bottom. The left upper louver section, the left lower louver section, the right upper louver section, and the right lower louver section each contain multiple louver strips. The right middle sealing section and the left middle sealing section do not contain louver strips. The upper ends of the left middle sealing section, the middle partition component, and the right middle sealing section are flush. The lower ends of the left middle sealing section, the middle partition component, and the right middle sealing section are also flush.

[0011] The outer main unit is connected to an air inlet and an air outlet. The drying gas can enter from the lower chamber and finally exit from the upper chamber. The air inlet is connected to the lower chamber, and the air outlet is connected to the upper chamber. The air inlet is located on the front or rear side of the outer main unit, and the air outlet is located on the front or rear side of the outer main unit.

[0012] A first anti-dust plate is installed at the lower end of the upper chamber, which can guide dust falling on the first anti-dust plate into the left material channel or the right material channel. A second anti-dust plate is installed at the lower end of the lower chamber, which can guide dust falling on the second anti-dust plate into the left material channel or the right material channel. A left anti-dust plate is installed at the lower end of the left gas channel, which can guide dust falling on the left anti-dust plate into the left material channel. A right anti-dust plate is installed at the lower end of the right gas channel, which can guide dust falling on the right anti-dust plate into the right material channel.

[0013] The cold-pressed block vertical dryer also includes a discharge hopper, which is connected to the outer main cylinder from bottom to top. The discharge hopper has a lower outer hopper wall and a lower inner hopper. The lower end of the lower outer hopper wall is provided with multiple discharge ports, and the lower inner hopper is directly connected to the left material channel and the right material channel only.

[0014] A cold-pressed block drying system includes multiple cold-pressed block vertical dryers, wherein the cold-pressed block vertical dryers are the aforementioned cold-pressed block vertical dryers, and the multiple cold-pressed block vertical dryers are arranged side by side in a horizontal direction.

[0015] The cold-pressed block drying system also includes a feeding belt, a discharging belt, a hot air main pipe, and a cold air main pipe. The feeding belt is located above the vertical cold-pressed block dryer and can transport materials into the vertical cold-pressed block dryer through a plow-type unloader. The materials in the vertical cold-pressed block dryer can be transported out through the discharging belt. The hot air main pipe can supply hot air into the vertical cold-pressed block dryer and is connected to the vertical cold-pressed block dryer through hot air branch pipes. The hot air branch pipes are equipped with air inlet valves. The cold air discharged from the vertical cold-pressed block dryer can enter the cold air main pipe, which is connected to the vertical cold-pressed block dryer through cold air branch pipes. The cold air branch pipes are equipped with air outlet valves. When the cross-section of the outer main cylinder is rectangular, a portion of the outer main cylinder of two adjacent vertical cold-pressed block dryers is shared.

[0016] The beneficial effects of this utility model embodiment are:

[0017] 1. The aforementioned vertical dryer and drying system for cold-pressed blocks are particularly suitable for drying cold-pressed blocks. The cold-pressed blocks flow continuously within the dryer, avoiding material breakage and pulverization caused by falling, thus resulting in a low pulverization rate and a correspondingly high yield.

[0018] 2. The cold-pressed block vertical dryer has a simple structure, smooth material flow, simple operation and maintenance, and no internal moving parts, resulting in a low failure rate and good stability.

[0019] 3. It overcomes the problems of short-flow hot air and low hot air utilization rate in traditional dryers. The hot air passes through the cold-pressed briquette material layer twice, forming a high-temperature section at the bottom to ensure the quality of the finished cold-pressed briquette, and a low-temperature section at the top, achieving full utilization of heat and slow preheating of the cold-pressed briquette, avoiding thermal explosion caused by rapid heating. The tiered and secondary utilization of hot air greatly reduces energy consumption, thereby reducing operating costs.

[0020] 4. In traditional dryers, dust easily accumulates at the bottom of the inner cylinder, on the annular partition, and at the bottom end plate, and this dust cannot be removed. Over time, this can lead to equipment blockage and increased load, reducing the effectiveness of the equipment. The cold-pressed block vertical dryer features an anti-dust accumulation plate and a dust-free design, effectively solving this problem.

[0021] 5. Traditional dryers often result in uneven drying of materials in the inner and outer layers. However, in the cold-pressed block vertical dryer, the material comes into cross contact with hot air twice, flowing from top to bottom. The upper layer, where the material is at a lower temperature, is on the lower layer, which is at a higher temperature. This ensures uniform heating and similar drying levels, achieving the desired finished product quality almost simultaneously. This offers significant benefits for quality control and reducing equipment height. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 This is a front view schematic diagram of the vertical cold-pressed block dryer of this utility model when the cross-section of the outer main cylinder is circular.

[0024] Figure 2 This is a schematic diagram of the external main unit casing and its interior.

[0025] Figure 3 It is along Figure 1 Cross-sectional view along the AA direction.

[0026] Figure 4 It is along Figure 1 Cross-sectional view along the BB direction.

[0027] Figure 5 It is along Figure 1 Cross-sectional view along the CC direction.

[0028] Figure 6 This is a front view schematic diagram of the vertical cold-pressed block dryer of this utility model when the rectangle of the outer main unit cylinder is circular.

[0029] Figure 7 It is along Figure 6 Cross-sectional view along the DD direction.

[0030] Figure 8 It is along Figure 6 Cross-sectional view along the EE direction.

[0031] Figure 9 It is along Figure 6 Cross-sectional view along the FF direction.

[0032] Figure 10 This is a schematic diagram showing a shared portion of the outer main cylinder of two adjacent vertical cold-pressed block dryers.

[0033] Figure 11 This is a schematic diagram showing the connection between the cold-pressed block vertical dryer and the hot air main pipe and the cold air main pipe.

[0034] The annotations in the attached figures are explained as follows:

[0035] 1. External main unit cylinder; 2. Internal main chamber; 3. Vertical guide louvers; 4. Feed hopper; 5. Air inlet; 6. Air outlet; 7. Discharge hopper;

[0036] 21. Left gas passage; 22. Left material passage; 23. Central cavity; 24. Right material passage; 25. Right gas passage; 26. Central partition component;

[0037] 31. First louver on the left; 32. Second louver on the left; 33. Second louver on the right; 34. First louver on the right; 35. Louver strip;

[0038] 41. Upper outer wall; 42. Upper inner chamber; 43. Feed inlet; 44. Dividing cone;

[0039] 71. Lower outer wall; 72. Lower inner chamber; 73. Discharge port;

[0040] 81. Feeding belt; 82. Vertical dryer for cold-pressed blocks; 83. Discharge valve; 84. Discharge belt; 85. Hot air main pipe; 86. Inlet valve; 87. Outlet valve; 88. Cold air main pipe; 89. Plow-type unloader;

[0041] 211. Left anti-dust accumulation plate;

[0042] 231. Upper chamber; 232. Lower chamber; 233. First anti-dust plate; 234. Second anti-dust plate;

[0043] 251. Right-side dust accumulation prevention plate;

[0044] 311. Upper left louver section; 312. Middle left sealing section; 313. Lower left louver section;

[0045] 341. Upper right louver section; 342. Middle right sealing section; 343. Lower right louver section. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] For ease of understanding and description, the following description of this utility model uses absolute positional relationships. Unless otherwise specified, the directional word "above" indicates... Figure 1 The direction above, the directional word "down" indicates Figure 1 The lower side of the middle, the directional word "left" indicates Figure 1 The left side of the direction, the directional word "right" indicates Figure 1 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 1 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 1 The direction of the orientation is towards the outside of the paper. This invention is described from the perspective of a reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them based on actual needs or a limited number of experiments.

[0048] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the cold-pressed block vertical dryer of this embodiment includes an outer main cylinder 1 and an inner main chamber 2. The outer main cylinder 1 is in an upright state. The inner main chamber 2 is provided with multiple vertical guide louvers 3. The inner main chamber 2 is divided by the multiple vertical guide louvers 3 into a left gas channel 21, a left material channel 22, a central cavity 23, a right material channel 24, and a right gas channel 25 arranged from left to right. The left gas channel 21, left material channel 22, central cavity 23, right material channel 24, and right gas channel 25 all extend in the vertical direction. The central cavity 23 is provided with a central partition 26. The central cavity 23 is divided by the central partition 26 into an upper chamber 231 and a lower chamber 232 that are independently arranged. The drying gas can enter from the lower chamber 232 and finally exit from the upper chamber 231, or the drying gas can enter from the upper chamber 231 and finally exit from the lower chamber 232.

[0049] The cold-pressed block vertical dryer also includes a feeding hopper 4, which is connected vertically to the outer main cylinder 1. The feeding hopper 4 is a vertical cylindrical structure, containing an upper outer wall 41 and an upper inner chamber 42. To ensure uniform loading, the upper end of the upper outer wall 41 is provided with multiple feeding ports 43. The upper inner chamber 42 is directly connected only to the left material channel 22 and the right material channel 24. The upper inner chamber 42 is not directly connected to the left gas channel 21, the central cavity 23 and the right gas channel 25.

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a material distribution cone 44 is provided at the lower end of the upper inner chamber 42. The material distribution cone 44 and the central cavity 23 are arranged vertically. The material distribution cone 44 is located between the left material channel 22 and the right material channel 24 in the left-right direction. The material distribution cone 44 can guide the material (to be dried) in the upper inner chamber 42 into the left material channel 22 or the right material channel 24. The material distribution cone 44 has a long strip structure and extends in the front-back direction. The cross-section of the material distribution cone 44 is an isosceles triangle structure with the top facing upwards.

[0051] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the outer main unit cylinder 1 is an upright cylindrical structure. The cross-section of the outer main unit cylinder 1 can be annular or rectangular (such as square). An insulation layer needs to be installed on the outer periphery of the outer main unit cylinder 1 to reduce heat dissipation energy consumption. The inner main compartment 2 is equipped with four vertical flow guide louvers 3. All four vertical flow guide louvers 3 are in an upright state. From left to right, the four vertical flow guide louvers 3 are the left first louver 31, the left second louver 32, the right second louver 33, and the right first louver 34. The left first louver 31, the left second louver 32, the right second louver 33, and the right first louver 34 are all perpendicular to the left and right directions.

[0052] The middle partition 26 has a sealed structure and can be block-shaped. Along the vertical direction, the middle portion of the left second louver 32 is shared with the left side portion of the middle partition 26, and the middle portion of the right second louver 33 is shared with the right side portion of the middle partition 26. The upper and lower parts of the left second louver 32 each contain multiple louver strips 35, extending in the front-to-back direction and spaced apart in the vertical direction. The upper and lower parts of the right second louver 33 each contain multiple louver strips 35, with a gap between adjacent louver strips 35, the gap being smaller than the particle size of the material. The louver strips 35 are inclined, and the inclination direction of the louver strips 35 should ensure smooth downward flow of the material. Airflow can pass through the upper and lower parts of the left second louver 32 and the right second louver 33 in the left-to-right direction, but airflow cannot pass through the middle parts of the left second louver 32, the middle parts of the right second louver 33, or the middle partition 26.

[0053] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the left first louver 31 includes a left upper louver section 311, a left middle sealing section 312, and a left lower louver section 313 arranged sequentially from top to bottom. The right first louver 34 includes a right upper louver section 341, a right middle sealing section 342, and a right lower louver section 343 arranged sequentially from top to bottom. Each of the left upper louver section 311, left lower louver section 313, right upper louver section 341, and right lower louver section 343 contains multiple louver strips 35, which extend in the front-to-back direction and are arranged at intervals in the vertical direction. Neither the right middle sealing section 342 nor the left middle sealing section 312 contains louver strips 35. Airflow can pass through the left upper louver section 311, left lower louver section 313, right upper louver section 341, and right lower louver section 343 in the left-to-right direction, but airflow cannot pass through the right middle sealing section 342 and left middle sealing section 312.

[0054] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the middle partition 26 is located in the middle of the middle cavity 23 along the vertical direction. The upper ends of the left middle sealing section 312, the middle partition 26, and the right middle sealing section 342 are flush with each other. The lower ends of the left middle sealing section 312, the middle partition 26, and the right middle sealing section 342 are also flush with each other.

[0055] Preferably, the drying gas enters from the lower chamber 232 and exits from the upper chamber 231. The lower chamber 232 can also be called the hot air chamber, and the upper chamber 231 can also be called the cold air chamber. An air inlet 5 and an air outlet 6 are connected to the outside of the outer main unit 1. The air inlet 5 communicates with the lower chamber 232, and the air outlet 6 communicates with the upper chamber 231. The air inlet 5 is located on the front or rear side of the outer main unit 1, and the air outlet 6 is located on the front or rear side of the outer main unit 1. The air inlet 5 and the air outlet 6 are located on the same side or opposite sides of the outer main unit 1.

[0056] The material to be dried enters the left material channel 22 and the right material channel 24 and will continue to move downwards. The lower part of the left material channel 22 and the right material channel 24 forms a high-temperature drying section to ensure the quality of the cold-pressed block product. The upper part of the left material channel 22 and the right material channel 24 forms a low-temperature drying section, which realizes full utilization of heat and slow heating of the cold-pressed block.

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a first anti-dust plate 233 is provided at the lower end of the upper chamber 231. The first anti-dust plate 233 can guide dust falling on the first anti-dust plate 233 to slide into the left material channel 22 or the right material channel 24. A second anti-dust plate 234 is provided at the lower end of the lower chamber 232. The second anti-dust plate 234 can guide dust falling on the second anti-dust plate 234 to slide into the left material channel 22 or the right material channel 24. A left anti-dust plate 211 is provided at the lower end of the left gas channel 21. The left anti-dust plate 211 can guide dust falling on the left anti-dust plate 211 to slide into the left material channel 22. A right anti-dust plate 251 is provided at the lower end of the right gas channel 25. The right anti-dust plate 251 can guide dust falling on the right anti-dust plate 251 to slide into the right material channel 24.

[0058] The first anti-dust accumulation plate 233 is a long strip structure, extending in the front-to-back direction. Its cross-section is an isosceles triangle with the apex pointing upwards. The first anti-dust accumulation plate 233 and the second anti-dust accumulation plate 234 have the same construction. The left anti-dust accumulation plate 211 is also a long strip structure, extending in the front-to-back direction. It is an inclined structure, with its upper end inclined to the left and its lower end inclined to the right. The left and right anti-dust accumulation plates 211 are symmetrical and mirror images of each other.

[0059] The cold-pressed block vertical dryer also includes multiple discharge bins 7, which are roughly funnel-shaped. The discharge bins 7 and the outer main cylinder 1 are connected as one unit. The discharge bins 7 contain a lower outer bin wall 71 and a lower inner bin 72. To ensure uniform discharge, multiple discharge ports 73 are provided at the lower end of the lower outer bin wall 71. The lower inner bin 72 is directly connected only to the left material channel 22 and the right material channel 24. The lower inner bin 72 is not directly connected to the left gas channel 21, the central cavity 23 and the right gas channel 25.

[0060] The following describes a cold-pressed block drying system, such as... Figure 10 , Figure 11 As shown, the cold-pressed block drying system includes multiple cold-pressed block vertical dryers 82, which are the aforementioned cold-pressed block vertical dryers, and the multiple cold-pressed block vertical dryers 82 are arranged side by side in a horizontal direction.

[0061] As an alternative implementation, when the cross-section of the outer main cylinder 1 is rectangular, a portion of the outer main cylinder 1 of two adjacent cold-pressed block vertical dryers 82 can share a wall panel, reducing costs and saving space.

[0062] As one possible implementation method, such as Figure 10 , Figure 11As shown, the cold-pressed block drying system also includes a feeding belt 81, a discharging belt 84, a hot air main duct 85, and a cold air main duct 88. The feeding belt 81 is located above the cold-pressed block vertical dryer 82, and the feeding belt 81 can convey the material (to be dried) into the cold-pressed block vertical dryer 82 through a plow-type unloader 89. The discharging belt 84 is located below the cold-pressed block vertical dryer 82. A discharge valve 83 is connected to the discharge port 73 of the cold-pressed block vertical dryer 82. The dried material inside the 2nd chamber can be transported outward via the discharge belt 84. The hot air main pipe 85 can deliver hot air into the cold block vertical dryer 82. The hot air main pipe 85 is connected to the air inlet 5 of the cold block vertical dryer via hot air branch pipes. An air inlet valve 86 is provided on the hot air branch pipe. The cold air discharged from the cold block vertical dryer can enter the cold air main pipe 88. The cold air main pipe 88 is connected to the air outlet 6 of the cold block vertical dryer via cold air branch pipes. An air outlet valve 87 is provided on the cold air branch pipe.

[0063] The working process of the cold-pressed block vertical dryer is described below.

[0064] (To be dried) The material flows downwards from the feed inlet 43 through the feed hopper 4 into the left material channel 22 and the right material channel 24 respectively. Hot air enters the inner main chamber 2 from the lower chamber 232 through the air inlet 5. The hot air flows to the left, passing through the lower part of the second louver 32 on the left, the material, and the lower part of the first louver 31 on the left, entering the left gas channel 21 and moving upwards. Then it passes through the upper part of the first louver 31 on the left, the material, and the upper part of the second louver 32 on the left, and finally exits from the upper chamber 231 through the air outlet 6. The hot air also flows to the right, passing through the lower part of the second louver 33 on the right, the material, and the lower part of the first louver 34 on the right, entering the right gas channel 25 and moving upwards. Then it passes through the upper part of the first louver 34 on the right, the material, and the upper part of the second louver 33 on the right, and finally exits from the upper chamber 231 through the air outlet 6. The dried material in the left material channel 22 and the right material channel 24 flows downward and is discharged downward from the discharge port 73 of the discharge bin 7.

[0065] The following describes the practical application of the cold-pressed block vertical dryer and the cold-pressed block drying system.

[0066] A steel company cold-presses iron-containing sludge and dust into briquettes. The resulting briquettes have a moisture content of 8%–15%, which does not meet usage requirements. Therefore, the company uses the aforementioned vertical cold-pressed briquette dryer to reduce the moisture content to 2%. Due to the large production capacity of 300,000 tons per year, three of the aforementioned vertical cold-pressed briquette dryers are selected and operated in parallel. Considering limited space, a square drying chamber with a shared wall design is adopted, meaning the cross-section of the outer main cylinder 1 is square, with the air inlet 5 and air outlet 6 arranged opposite sides, bottom-in, top-out (i.e., the air inlet 5 and air outlet 6 are positioned at the bottom and top). The vertical cold-pressed briquette dryer has two feed inlets 43 at the top and four discharge outlets 73 at the bottom.

[0067] The vertical dryer for cold-pressed blocks is equipped with a feeding belt 81 at the top, and two plow-type unloaders 89 on the feeding belt 81; a discharge valve 83 and a discharge belt 84 are installed at the bottom of the vertical dryer for cold-pressed blocks; a hot air main pipe 85 and three air inlet valves 86 are installed in the middle and lower part of the vertical dryer for cold-pressed blocks, and a cold air main pipe 88 and three air outlet valves 87 are installed in the middle and upper part of the vertical dryer for cold-pressed blocks.

[0068] Wet cold-pressed briquettes (material to be dried) with a moisture content of 8% to 15% are conveyed to the top of the vertical cold-pressed briquettes dryer via a feeding belt 81. A plow-type unloader 89 discharges the wet briquettes into the feeding hopper 4 through the feed inlet 43. Under the action of the distribution cone 44 within the hopper, the briquettes slide evenly into the material channels on both sides (left material channel 22 and right material channel 24). In the material channels, they flow downwards due to gravity. The guide louvers on both sides (left first louver 31, left second louver 32, right second louver 33, and right first louver 34) ensure that the material does not leak to either side. 150000m 3 Hot air at a flow rate of / h and a temperature of 150℃ is supplied from the main hot air duct. It then enters the hot air chamber (lower chamber 232) through the inlet valves 86 of each branch pipe via the inlet 5. The hot air then flows laterally through the guide louvers, intersecting with the cold-pressed blocks for thorough contact and evaporation of moisture. The hot air carrying moisture enters the gas channels (left gas channel 21 and right material channel 24), rises, and again flows laterally through the guide louvers, intersecting with the cold-pressed blocks for thorough contact. The cold-pressed blocks are preheated and cured, with some moisture evaporating. After counter-current contact with the cold-pressed blocks, the hot air's temperature drops to 80℃~90℃ after two heat utilizations. It then enters the cold air chamber (upper chamber 231) and flows through the outlet 6 and branch pipe outlet valves into the main cold air duct 88. The main cold air duct contains some dust, which is sent to a dust collector for dust removal before being discharged in compliance with standards.

[0069] After being preheated and dried twice by evaporation, the wet cold-pressed briquettes are qualified finished products with a moisture content of ≤2%. The finished products enter the discharge hopper 7, and the discharge speed is controlled by adjusting the discharge valve 83. The finished products are then discharged onto the discharge belt 84 for external transport.

[0070] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of its implementation. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this utility model should still fall within the scope of this utility model. Furthermore, the technical features, technical solutions, and embodiments of this utility model can be freely combined and used.

Claims

1. A vertical dryer for cold-pressed blocks, characterized in that, The cold-pressed block vertical dryer includes an outer main cylinder (1) and an inner main chamber (2). The outer main cylinder (1) is in an upright state. The inner main chamber (2) is provided with multiple vertical guide louvers (3). The inner main chamber (2) is divided by multiple vertical guide louvers (3) into a left gas channel (21), a left material channel (22), a central cavity (23), a right material channel (24), and a right gas channel (25) arranged from left to right. The central cavity (23) is provided with a central partition (26). The central cavity (23) is divided by the central partition (26) into an upper chamber (231) and a lower chamber (232) arranged vertically. The drying gas can enter from the lower chamber (232) and finally exit from the upper chamber (231), or the drying gas can enter from the upper chamber (231) and finally exit from the lower chamber (232).

2. The vertical dryer for cold-pressed blocks according to claim 1, characterized in that, The cold-pressed block vertical dryer also includes a feeding hopper (4), which is connected vertically to the outer main cylinder (1). The feeding hopper (4) contains an upper outer wall (41) and an upper inner chamber (42). The upper end of the upper outer wall (41) is provided with multiple feed inlets (43). The upper inner chamber (42) is directly connected to the left material channel (22) and the right material channel (24).

3. The vertical dryer for cold-pressed blocks according to claim 2, characterized in that, A material distribution cone (44) is provided at the lower end of the upper inner chamber (42). The material distribution cone (44) and the central cavity (23) are arranged vertically. The material distribution cone (44) can guide the material in the upper inner chamber (42) into the left material channel (22) or the right material channel (24).

4. The vertical dryer for cold-pressed blocks according to claim 1, characterized in that, The inner main compartment (2) is equipped with four vertical flow guide louvers (3). All four vertical flow guide louvers (3) are in an upright state. The four vertical flow guide louvers (3) are, from left to right, the first louver (31) on the left, the second louver (32) on the left, the second louver (33) on the right, and the first louver (34) on the right. The first louver (31) on the left, the second louver (32) on the left, the second louver (33) on the right, and the first louver (34) on the right are all perpendicular to the left and right directions. The middle partition (26) is a sealed structure. Along the up and down direction, the middle part of the second louver (32) on the left is shared with the left part of the middle partition (26), and the middle part of the second louver (33) on the right is shared with the right part of the middle partition (26).

5. The vertical dryer for cold-pressed blocks according to claim 4, characterized in that, The left first louver (31) includes, from top to bottom, an upper left louver section (311), a middle left sealing section (312), and a lower left louver section (313). The right first louver (34) includes, from top to bottom, an upper right louver section (341), a middle right sealing section (342), and a lower right louver section (343). The upper left louver section (311), lower left louver section (313), upper right louver section (341), and lower left louver section (313) are arranged sequentially from top to bottom. The lower right louver section (343) contains multiple louver strips (35), while the right middle sealing section (342) and the left middle sealing section (312) do not contain louver strips (35). The upper end of the left middle sealing section (312), the upper end of the middle partition (26), and the upper end of the right middle sealing section (342) are flush, as are the lower end of the left middle sealing section (312), the lower end of the middle partition (26), and the lower end of the right middle sealing section (342).

6. The vertical dryer for cold-pressed blocks according to claim 1, characterized in that, The outer main unit cylinder (1) is connected to an air inlet (5) and an air outlet (6). The drying gas can enter from the lower chamber (232) and finally exit from the upper chamber (231). The air inlet (5) is connected to the lower chamber (232), and the air outlet (6) is connected to the upper chamber (231). The air inlet (5) is located on the front or rear side of the outer main unit cylinder (1), and the air outlet (6) is located on the front or rear side of the outer main unit cylinder (1).

7. The vertical dryer for cold-pressed blocks according to claim 1, characterized in that, A first dust-proof plate (233) is provided at the lower end of the upper chamber (231). The first dust-proof plate (233) can guide the dust falling on the first dust-proof plate (233) into the left material channel (22) or the right material channel (24). A second dust-proof plate (234) is provided at the lower end of the lower chamber (232). The second dust-proof plate (234) can guide the dust falling on the second dust-proof plate (234) into the left material channel (22) or the right material channel (24). A left dust-proof plate (211) is provided at the lower end of the left gas channel (21). The left dust-proof plate (211) can guide the dust falling on the left dust-proof plate (211) into the left material channel (22). A right dust-proof plate (251) is provided at the lower end of the right gas channel (25). The right dust-proof plate (251) can guide the dust falling on the right dust-proof plate (251) into the right material channel (24).

8. The vertical dryer for cold-pressed blocks according to claim 1, characterized in that, The cold-pressed block vertical dryer also includes a discharge bin (7), which is connected to the outer main cylinder (1) from bottom to top. The discharge bin (7) contains a lower outer bin wall (71) and a lower inner bin (72). The lower end of the lower outer bin wall (71) is provided with multiple discharge ports (73). The lower inner bin (72) is directly connected to the left material channel (22) and the right material channel (24).

9. A cold-pressed block drying system, characterized in that, The cold-pressed block drying system includes multiple cold-pressed block vertical dryers (82), wherein the cold-pressed block vertical dryer (82) is the cold-pressed block vertical dryer as described in any one of claims 1 to 8, and the multiple cold-pressed block vertical dryers (82) are arranged side by side in the horizontal direction.

10. The cold-pressed block drying system according to claim 9, characterized in that, The cold-pressed block drying system also includes a feeding belt (81), a discharging belt (84), a hot air main pipe (85), and a cold air main pipe (88). The feeding belt (81) is located above the cold-pressed block vertical dryer (82). The feeding belt (81) can convey materials into the cold-pressed block vertical dryer (82) through a plow-type unloader (89). The materials in the cold-pressed block vertical dryer (82) can be transported out through the discharging belt (84). The hot air main pipe (85) can deliver hot air into the cold-pressed block vertical dryer (82). The hot air main pipe (85) is connected to the cold block vertical dryer (82) through the hot air branch pipe. The hot air branch pipe is equipped with an air inlet valve (86). The cold air discharged from the cold block vertical dryer (82) can enter the cold air main pipe (88). The cold air main pipe (88) is connected to the cold block vertical dryer (82) through the cold air branch pipe. The cold air branch pipe is equipped with an air outlet valve (87). When the cross-section of the outer main cylinder (1) is rectangular, a part of the outer main cylinder (1) of two adjacent cold block vertical dryers (82) is shared.

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