Three-return-stroke dryer

Abstract

The utility model provides a three-return-stroke drying machine, which relates to the technical field of drying machine instruments and comprises a sand discharging device, a roller mounting frame, a power motor, a fan, a sand feeding device, a rotating roller, a motor belt wheel, a transmission belt, a rotating shaft, a connecting clamping block and a fixing rod, the two sides of the middle of the roller mounting frame are each provided with two sets of semicircular rotating connecting grooves, the circular stopping blocks on the two sides of the rotating shaft are rotationally connected into the semicircular rotating connecting grooves in the two sides of the middle of the roller mounting frame, the two sides of the rotating shaft are each connected with a set of roller wheels, and the two sides of the rotating roller are each provided with a set of circular sliding rails. And the roller device is arranged, and due to the multi-layer design, the sand can be air-dried more quickly and more uniformly. And the sand outlet device and the sand inlet device are arranged to be kept at a non-rotating position, so that sand can be directly input into the tank body and then smoothly output out of the tank body, and the efficiency is ensured. And the backflow plate is arranged to distribute internal sand, turn over and convey components, and the components are quickly air-dried through strong wind power of the fan.

Description

Technical Field

[0001] This utility model belongs to the field of dryer equipment technology, and more specifically, it relates to a three-pass dryer. Background Technology

[0002] The three-pass rotary dryer is a highly efficient drying equipment widely used in industrial and agricultural fields. Its working principle mainly includes three stages: heating and evaporation, recovery and reheating, and drying and dehydration. Specifically, after wet materials or raw materials enter the dryer, hot air is generated and heated from a heat source (usually gas or steam) and then enters the dryer's cylinder. The humid air is discharged through the dryer's outlet, but still contains a significant amount of heat energy. This humid air is then recovered and reheated, and re-enters the dryer to continue contact with the wet materials. Through this three-pass cycle, the three-pass rotary dryer can efficiently dry large quantities of wet materials or raw materials, reducing energy waste and improving drying efficiency. The application fields of the three-pass rotary dryer are very wide, including but not limited to building materials, metallurgy, mineral processing, chemicals, and cement industries. It can handle various granular materials with high moisture content and specific gravity, such as slag, limestone, sand, clay, and river sand. Furthermore, the three-pass rotary dryer can also be used to process various materials such as food, feed, and grain, meeting the needs of different industries.

[0003] Based on the above, some dryers require the material to be loaded into the device first, then dried, and then output before being input again. This results in low efficiency, good drying effect but long drying time and high time cost. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a three-pass rotary dryer to solve the issues of low efficiency and long drying time required in existing three-pass rotary dryers.

[0005] This utility model of a three-pass rotary dryer is achieved through the following specific technical means:

[0006] The three-pass rotary dryer includes a sand discharger, a drum mounting frame, a power motor, a fan, a sand inlet, a rotating drum, a motor pulley, a transmission belt, a rotating shaft, connecting blocks, and a fixing rod. The drum mounting frame has two sets of semi-circular rotating connecting grooves on each side of its center. Circular blocking blocks on both sides of the rotating shaft are rotatably connected to the semi-circular rotating connecting grooves on both sides of the drum mounting frame. Each side of the rotating shaft is connected to a set of rollers. Each side of the rotating drum has a set of circular sliding rails, which mesh with the rotating connecting grooves in the center of the rollers. Each side of the rotating drum has a cross-section with... Three sets of snap-fit ​​connection slots are provided, and the three sets of snap-fit ​​connection slots on one side of the sand outlet and the sand inlet are snap-fitted into the snap-fit ​​connection slots on both sides of the rotating drum by connecting blocks; the top of the sand inlet is provided with a set of circular connection holes, and the circular connection holes on the upper part of the sand inlet are snap-fitted to the fan pipe, and the other end of the fan pipe is snap-fitted to the air outlet on the outside of the fan; each of the two sets of connectors in the middle of the drum mounting frame is provided with a set of circular connection holes, and the circular connection holes on the two sets of connectors in the middle of the drum mounting frame are connected to a set of drive wheels in the middle of the rotating shaft, and the transmission belt connects the drive wheels and the motor pulley to rotate.

[0007] Furthermore, each side of the rotating drum is provided with a set of annular rotating grooves, and three sets of rotating auxiliary wheels are rotatably connected in the annular rotating grooves on both sides of the rotating drum.

[0008] Furthermore, a second layer of rollers is welded to the inside of the rotating roller via a fixing rod, and a third layer of rollers is welded to the inside of the second layer of rollers via a fixing rod. A set of backflow plates is welded to each of the rotating roller, the second layer of rollers, and the third layer of rollers.

[0009] Furthermore, each side of the sand outlet and sand inlet is provided with a set of annular rotating grooves, and rotating auxiliary wheels are connected in the annular rotating grooves on both sides of the sand inlet. The sand outlet and sand inlet are rotatably connected to the two sides of the rotating drum through the sand inlet.

[0010] Furthermore, the motor pulley has a set of circular connecting holes in the middle, and the circular connecting holes in the middle of the motor pulley are rotatably connected to the rotating connecting shaft at the front of the power motor. The connecting base plate at the bottom of the power motor is fixedly connected to the motor mounting bracket.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model, by setting up a roller device, has a multi-layer design that enables the sand to be dried more quickly and evenly, preventing the sand from being piled up and unable to dry.

[0013] 2. By setting the sand outlet and sand inlet to a non-rotating position, this utility model allows sand to be directly input into the tank and then smoothly output out of the tank, ensuring efficiency.

[0014] 3. This utility model uses a deflector plate to divert the sand inside, turning and conveying the components, and uses the strong air force of a fan to dry it quickly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the roller device of this utility model.

[0017] Figure 3 This is a cross-sectional structural schematic diagram of the roller device of this utility model.

[0018] Figure 4 This is a schematic diagram of the power device of this utility model.

[0019] Figure 5 This is a front sectional view of the main body of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Sand discharger; 2. Roller mounting bracket; 3. Power motor; 4. Fan; 5. Sand inlet; 6. Rotating drum; 301. Motor mounting bracket; 302. Motor pulley; 303. Transmission belt; 304. Drum wheel; 305. Rotating shaft; 306. Drive wheel; 401. Fan duct; 601. Connecting clamp; 602. Rotating auxiliary wheel; 603. Second-layer drum; 604. Third-layer drum; 605. Fixing rod; 606. Reverse flow plate. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example

[0023] As attached Figure 1 To be continued Figure 5 As shown:

[0024] This utility model provides a three-pass rotary dryer, including a sand discharger 1, a drum mounting frame 2, a power motor 3, a fan 4, a sand inlet 5, a rotating drum 6, a motor pulley 302, a transmission belt 303, a rotating shaft 305, a connecting block 601, and a fixing rod 605. The drum mounting frame 2 has two sets of semi-circular rotating connecting grooves on each side of its middle section. Circular blocking blocks on both sides of the rotating shaft 305 are rotatably connected to the semi-circular rotating connecting grooves on both sides of the middle section of the drum mounting frame 2. A set of roller wheels 304 are connected to each side of the rotating shaft 305. A set of circular sliding rails is provided on each side of the rotating drum 6, and the circular sliding rails on both sides of the rotating drum 6 are engaged with the rotating connecting grooves in the middle of the roller wheels 304. Each cross-section is provided with three sets of snap-fit ​​connection slots, and the three sets of snap-fit ​​connection slots on one side of the sand outlet 1 and the sand inlet 5 are snap-fitted into the snap-fit ​​connection slots on both sides of the rotating drum 6 by the connecting snap-fit ​​block 601; the top of the sand inlet 5 is provided with a set of circular connection holes, and the circular connection holes on the upper part of the sand inlet 5 are snap-fitted to the fan pipe 401, and the other end of the fan pipe 401 is snap-fitted to the air outlet on the outside of the fan 4; each of the two sets of connectors in the middle of the drum mounting frame 2 is provided with a set of circular connection holes, and the circular connection holes on the two sets of connectors in the middle of the drum mounting frame 2 are connected to a set of drive wheels 306 in the middle of the rotating shaft 305, and the transmission belt 303 rotates and connects the drive wheels 306 and the motor pulley 302.

[0025] The rotating drum 6 has a set of annular rotating grooves on both sides, and three sets of rotating auxiliary wheels 602 are rotatably connected in the annular rotating grooves on both sides of the rotating drum 6, which reduces friction and noise when the device rotates.

[0026] The rotating drum 6 has a second drum 603 welded to the inside of the rotating drum 6 via a fixing rod 605, and a third drum 604 welded to the inside of the second drum 603 via a fixing rod 605. A set of backflow plates 606 are welded to the rotating drum 6, the second drum 603 and the third drum 604 to provide corresponding thrust and to turn the components over for air drying.

[0027] Among them, the sand discharger 1 and the sand inlet 5 are each provided with a set of annular rotating grooves, and the annular rotating grooves on both sides of the sand inlet 5 are connected with rotating auxiliary wheels 602. The sand discharger 1 and the sand inlet 5 are connected to the rotating drum 6 on both sides through the sand inlet 5, so as to form a complete conveyor belt.

[0028] The motor pulley 302 has a set of circular connecting holes in the middle, and the circular connecting holes in the middle of the motor pulley 302 are rotatably connected to the rotating connecting shaft at the front of the power motor 3. The connecting base plate at the bottom of the power motor 3 is fixedly connected to the motor mounting bracket 301, which firmly fixes the device so that it will not shift when it rotates.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In this invention, sand is fed into the inlet of the sand feeder 5, and then the sand first enters the three-layer drum 604. Then, it is pushed back by the reverse flow plate 606 and pushed into the fixed rod 605. The fixed rod 605 then feeds the sand into the rotating drum 6, and then outputs it through the outer outlet of the sand outlet 1. The rotation of the device is powered by the starter motor 3. The power provided by the starter motor 3 is transmitted to the rotating shaft 305 through the motor pulley 302 and the transmission belt 303. The rotating shaft 305 then transmits the power to the drum wheel 304, which drives the rotating drum 6 to rotate. Then, the blower 4 blows hot air into the rotating drum 6 through the blower pipe 401 to dry the sand, achieving the effect of wet in and dry out.

Claims

1. A three-pass rotary dryer, characterized in that: It includes a sand discharger (1), a drum mounting frame (2), a power motor (3), a blower (4), a sand feeder (5), a rotating drum (6), a motor pulley (302), a transmission belt (303), a rotating shaft (305), a connecting block (601), and a fixing rod (605). The roller mounting frame (2) has two sets of semi-circular rotating connection slots on each side of the middle. The circular blocking blocks on both sides of the rotating shaft (305) are rotatably connected in the semi-circular rotating connection slots on both sides of the middle of the roller mounting frame (2). A set of roller wheels (304) is connected on each side of the rotating shaft (305). A set of circular sliding rails is provided on each side of the rotating roller (6). The circular sliding rails on both sides of the rotating roller (6) are meshed with the rotating connection slots in the middle of the roller wheels (304). Three sets of clamping connection slots are provided on each side of the rotating roller (6). The three sets of clamping connection slots on the side of the sand outlet (1) and the sand inlet (5) are clamped and connected to the clamping connection slots on both sides of the rotating roller (6) by the connecting block (601). The top of the sand feeder (5) is provided with a set of circular connecting holes, and the circular connecting holes on the upper part of the sand feeder (5) are connected to the fan pipe (401), and the other end of the fan pipe (401) is connected to the air outlet on the outside of the fan (4); the two sets of connectors in the middle of the roller mounting frame (2) are each provided with a set of circular connecting holes, and the circular connecting holes on the two sets of connectors in the middle of the roller mounting frame (2) are connected to a set of drive wheels (306) in the middle of the rotating shaft (305), and the transmission belt (303) connects the drive wheels (306) and the motor pulley (302) to rotate.

2. The three-pass dryer as described in claim 1, characterized in that: The rotating drum (6) has a set of annular rotating grooves on each side, and three sets of rotating auxiliary wheels (602) are rotatably connected in the annular rotating grooves on both sides of the rotating drum (6).

3. The three-pass dryer as described in claim 1, characterized in that: The rotating drum (6) has a second drum (603) welded inside the middle by a fixing rod (605), and a third drum (604) is welded inside the second drum (603) by a fixing rod (605). A set of backflow plates (606) are welded on the rotating drum (6), the second drum (603) and the third drum (604).

4. The three-pass dryer as described in claim 1, characterized in that: The sand outlet (1) and the sand inlet (5) are each provided with a set of annular rotating grooves on both sides, and rotating auxiliary wheels (602) are connected in the annular rotating grooves on both sides of the sand inlet (5). The sand outlet (1) and the sand inlet (5) are rotatably connected to the two sides of the rotating drum (6) through the sand inlet (5).

5. The three-pass dryer as described in claim 1, characterized in that: The motor pulley (302) has a set of circular connecting holes in the middle, and the circular connecting holes in the middle of the motor pulley (302) are rotatably connected to the rotating connecting shaft at the front of the power motor (3). The connecting base plate at the bottom of the power motor (3) is fixedly connected to the motor mounting bracket (301).

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