Reciprocating cycle dryer based on air flow regulation

Abstract

The present application belongs to the technical field of drying, and particularly relates to a reciprocating circulating dryer based on airflow adjustment, which comprises a drying cavity and a reciprocating drying mechanism, the drying cavity comprises a hopper, a motor, stirring blades and a threaded plug, and the reciprocating drying mechanism comprises a ring pipe, a connecting block, a hydraulic cavity, a hydraulic plate, a hydraulic rod and an airflow adjustment part; the airflow adjustment part comprises an adjustment cavity, the hopper is fixedly installed at the bottom of the inner wall of the drying cavity, the bottom is provided with a thread, and the hopper is threadedly connected with the threaded plug; the motor is fixedly installed in the drying cavity, and the output end is fixed with the stirring blades; the stirring blades are located in the hopper; and the surface of the hopper is provided with a plurality of air holes. The device solves the problem that, when particles are dried, the single input amount of the particles is more or less, the particles are humid or dry, and the strength of the drying airflow needs to be controlled, otherwise the particles are not fully dried, and the particles are damaged due to over-drying.

Description

Technical Field

[0001] This invention belongs to the field of drying technology, specifically relating to a reciprocating circulating dryer based on airflow regulation. Background Technology

[0002] Currently available dryers dry particles using high-temperature gas. However, when a large quantity of particles is fed at once, or when the particles are quite moist, it is necessary to increase the heat source temperature or the power of the circulating pump to increase the drying intensity. This results in high energy consumption and high cost. In contrast, the high-temperature airflow regulation method used in this solution offers higher control precision and more convenient temperature regulation compared to relying solely on airflow valves. It can also employ intermittent high-intensity high-temperature airflow impact to improve drying efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a reciprocating circulating dryer based on airflow regulation to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a reciprocating circulating dryer based on airflow regulation, comprising a drying chamber and a reciprocating drying mechanism. The drying chamber includes a hopper, a motor, stirring blades, and a threaded plug. The reciprocating drying mechanism includes a ring pipe, a connecting block, a hydraulic chamber, a hydraulic plate, a hydraulic rod, and an airflow regulation unit. The airflow regulation unit includes a regulation chamber. The hopper is fixedly installed on the bottom of the inner wall of the drying chamber, and its bottom is threaded and threadedly connected to the threaded plug. The motor is fixedly installed inside the drying chamber, and its output end is fixed to the stirring blades. The blade is located inside the hopper, and the surface of the hopper is provided with several air holes. The hydraulic chamber is fixedly installed below the drying chamber, and the hydraulic plate is slidably connected to the inner wall of the hydraulic chamber. The annular pipe is fixedly installed on the connecting block, and the bottom of the connecting block is fixedly connected to the hydraulic plate through a hydraulic rod. Several air pipes are provided around the inner side of the annular pipe. The adjusting chamber is fixedly installed above the drying chamber, and its top is connected to the external circulation pump pipeline, and its bottom is connected to the annular pipe with a flexible hose. A circulation pipe is connected between one side of the drying chamber and the external circulation pump, and the external circulation pump is connected to the external hot air pipeline.

[0005] The present invention further illustrates that the bottom of the hydraulic chamber is connected to an external hydraulic pump pipeline, and the annular pipe is located on the outside of the hopper.

[0006] The present invention further describes that the inner wall of the regulating cavity is provided with an airflow block, the airflow block is provided with an airflow hole in the middle and the edge is tapered, the upper part of the regulating cavity is provided with a threaded hole, and a screw is threadedly connected to the threaded hole. A ball is fixedly connected to the bottom end of the screw, and the ball is located at the upper middle position of the airflow block.

[0007] The present invention further illustrates that a threaded groove is provided on the lower part of the inner wall of the regulating cavity, and a disc is threadedly connected in the threaded groove. Two air holes are provided on the surface of the disc, and a spring is provided between the disc and the airflow block. The airflow block is slidably connected in the regulating cavity.

[0008] The present invention further illustrates that a rotating shaft is fixed above the disk, and a through hole is provided in the middle of the screw and the ball, and the rotating shaft is rotatably connected in the through hole.

[0009] The present invention further describes that the sphere includes an upper hemisphere and a lower hemisphere. The bottom of the upper hemisphere is magnetically connected to a limiting rod. The left side of the lower hemisphere is provided with a circular hole, and the limiting rod is inserted into the circular hole to connect the upper hemisphere and the lower hemisphere. The upper hemisphere is fixed to the bottom end of the screw and has a circular hole at its bottom. A cylinder is provided above the lower hemisphere and is inserted into the circular hole.

[0010] The present invention further illustrates that grooves are provided on the left and right sides of the cylinder, and protrusions are provided on the front and rear sides of the circular hole; after the bottom surface of the lower hemisphere is tightly fitted with the upper surface of the airflow block, rotating the screw causes the protrusions to insert into the grooves, that is, the lower hemisphere moves upward.

[0011] The present invention further illustrates that a limiting block is provided above the airflow block, and the limiting block is fixed to the inner wall of the regulating cavity.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses circulating high-temperature airflow to quickly dry the particles, which greatly improves the drying efficiency. Moreover, the high-temperature airflow is sprayed out through the air pipes around the ring pipe, making the drying more thorough and comprehensive, greatly increasing the drying efficiency. Furthermore, the reciprocating air jetting enables the thorough drying of a large number of particles, further improving the drying efficiency.

[0013] When the granules are relatively moist and the single input quantity is large, the operator can rotate the screw to reduce the gap between the conical surface of the airflow block and the sphere, thereby increasing the airflow velocity and thus enhancing the force when ejected from the ring pipe. This allows for high-intensity, centralized, high-temperature drying of large batches of moist granules, improving the drying intensity and efficiency. Conversely, when the granules are relatively dry, the gap between the sphere and the airflow block increases, and the gas flow velocity slows down, thus avoiding damage to the granules from high-intensity, high-temperature drying and improving granule quality.

[0014] By setting a spring, when the air pressure above the airflow block is greater than the spring force, the airflow block is pushed downwards and slides along the inner wall of the regulating cavity. This creates a gap between the ball and the airflow block, allowing for pressure relief. After pressure relief, the spring force is greater than the air pressure force above, causing the ball and airflow block to come into contact again. The airflow impact force during pressure relief is large, further increasing the intensity when it is ejected from the air pipe, thus improving the drying intensity. It also acts as an intermittent jet spray, avoiding particle damage caused by continuous high-temperature spraying and protecting particle quality to the greatest extent. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the drying chamber of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the adjustment cavity of the present invention;

[0019] Figure 4 This is an exploded view of the internal structure of the regulating cavity of the present invention;

[0020] Figure 5 This is a schematic diagram of Embodiment 1 of the present invention;

[0021] Figure 6 This is a schematic diagram of Embodiment 2 of the present invention;

[0022] Figure 7 This is a schematic diagram of Embodiment 3 of the present invention;

[0023] Figure 8 This is a schematic diagram of Embodiment 4 of the present invention;

[0024] Figure 9 This is a schematic diagram of the docking process between the groove of the cylinder and the protrusion of the circular hole in this invention;

[0025] Figure 10 This is a spherical cross-sectional view of the present invention;

[0026] In the diagram: 1. Drying chamber; 11. Hopper; 12. Agitator blade; 13. Threaded plug; 21. Ring pipe; 22. Connecting block; 23. Hydraulic chamber; 231. Hydraulic plate; 232. Hydraulic rod; 31. Adjusting chamber; 32. Airflow block; 33. Disc; 34. Spring; 35. Rotating shaft; 36. Upper hemisphere; 361. Circular hole; 37. Lower hemisphere; 371. Cylinder; 38. Limiting block; 39. Screw. Detailed Implementation

[0027] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-10 The present invention provides a technical solution: a reciprocating circulating dryer based on airflow regulation, including a drying chamber 1 and a reciprocating drying mechanism. The drying chamber 1 includes a hopper 11, a motor, a stirring blade 12 and a threaded plug 13. The reciprocating drying mechanism includes a ring pipe 21, a connecting block 22, a hydraulic chamber 23, a hydraulic plate 231, a hydraulic rod 232 and an airflow regulation unit.

[0029] The airflow regulating unit includes a regulating chamber 31. A hopper 11 is fixedly installed at the bottom of the inner wall of the drying chamber 1, and the bottom is threaded and threadedly connected to a threaded plug 13. A motor is fixedly installed in the drying chamber 1, and the output end is fixed to a stirring blade 12. The stirring blade 12 is located in the hopper 11. Several air holes are provided on the surface of the hopper 11. A hydraulic chamber 23 is fixedly installed below the drying chamber 1, and a hydraulic plate 231 is slidably connected to the inner wall of the hydraulic chamber 23. A ring pipe 21 is fixedly installed on a connecting block 22, and the bottom of the connecting block 22 is fixedly connected to the hydraulic plate 231 through a hydraulic rod 232. Several air pipes are provided around the inner side of the ring pipe 21. The regulating chamber 31 is fixedly installed above the drying chamber 1, and the top is connected to an external circulation pump pipe, and the bottom is connected to the ring pipe 21 with a flexible hose. A circulation pipe is connected between one side of the drying chamber 1 and the external circulation pump, and the external circulation pump is connected to an external hot air pipe.

[0030] The operator puts the granules into the drying chamber 1 and they fall into the hopper 11. Then the motor runs, driving the stirring blades 12 to rotate and stir the granules. At the same time, the external circulation pump draws high-temperature gas and injects it into the regulating chamber 31 through the pipeline, then into the ring pipe 21 through the hose, and finally sprays it out from the air pipe. The high-temperature airflow enters the hopper 11 through the air hole and dries the stirred granules at high temperature. Afterwards, the high-temperature airflow is drawn back into the drying chamber 1 by the external circulation pump through the circulation pipe. The circulating high-temperature airflow dries the granules quickly, greatly improving the drying efficiency. Moreover, the high-temperature airflow is sprayed out through the air pipes around the ring pipe 21, making the drying more thorough and comprehensive, and greatly increasing the drying efficiency.

[0031] The bottom of the hydraulic chamber 23 is connected to the external hydraulic pump pipeline, and the ring pipe 21 is located on the outside of the hopper 11;

[0032] When the ring pipe 21 ejects high-temperature gas through the gas pipe, the external liquid pump operates, injecting liquid into the hydraulic chamber 23. The hydraulic pressure pushes the hydraulic plate 231 to slide upward along the inner wall of the hydraulic chamber 23. The hydraulic plate 231 drives the connecting block 22 to move upward through the hydraulic rod 232. Then the liquid pump draws out liquid again, causing the connecting block 22 to return to its original position downward, thereby driving the ring pipe 21 to move up and down. The ring pipe 21 ejects high-temperature gas flow from bottom to top and then from top to bottom, performing reciprocating jetting, which can fully dry a large number of particles and further improve the drying efficiency.

[0033] An airflow block 32 is provided on the inner wall of the regulating cavity 31. An airflow hole is provided in the middle of the airflow block 32 and the edge is tapered. A threaded hole is provided on the upper part of the regulating cavity 31, and a screw 39 is threadedly connected to the threaded hole. A ball is fixedly connected to the bottom end of the screw 39 and the ball is located in the middle position above the airflow block 32.

[0034] After the external circulation pump injects high-temperature gas into the regulating chamber 31, the airflow enters the lower part through the airflow hole in the middle of the airflow block 32, and then enters the ring pipe 21 through the hose;

[0035] Example 1:

[0036] like Figure 5 As shown, when the granules are relatively moist and the single-input quantity is large, the operator can rotate the screw 39 to move it downwards through the threaded hole, thereby moving the ball downwards. The gap between the conical surface of the airflow block 32 and the ball decreases, and the airflow velocity increases, thus increasing the force when it is ejected from the ring pipe 21. This allows for high-intensity, centralized, high-temperature drying of a large batch of moist granules, significantly increasing the drying intensity and efficiency. Conversely, when the granules are relatively dry, only low-intensity drying is needed. In this case, the screw 39 is rotated in the opposite direction. This increases the gap between the ball and the airflow block 32, slows down the gas flow, and avoids damage to the granules caused by high-intensity, high-temperature drying, thereby improving the granule quality.

[0037] A threaded groove is provided on the lower part of the inner wall of the regulating cavity 31, and a disc 33 is threadedly connected in the threaded groove. Two air holes are provided on the surface of the disc 33. A spring 34 is provided between the disc 33 and the airflow block 32. The airflow block 32 is slidably connected in the regulating cavity 31.

[0038] Example 2:

[0039] like Figure 6As shown, a large number of particles are added at once, resulting in particle accumulation and small gaps between particles. At this time, the operator can rotate the screw 39 to make the ball and the airflow block 32 fit together, eliminating gaps between them. The external circulation pump continuously injects hot air into the regulating chamber 31. When the air pressure above the airflow block 32 is greater than the elastic force of the spring 34, the airflow block 32 is pushed downward along the inner wall of the regulating chamber 31, creating gaps between the ball and the airflow block 32 for depressurization. After depressurization, the force of the spring 34 is greater than the force of the air pressure above, causing the ball and the airflow block 32 to fit together again. The airflow impact force during depressurization is large, further increasing the intensity when it is ejected from the air pipe, thus improving the drying intensity. It also acts as an intermittent jet spray, avoiding particle damage caused by continuous high-temperature spraying and protecting particle quality to the greatest extent.

[0040] A rotating shaft 35 is fixed above the disc 33, and a through hole is provided in the middle of the screw 39 and the ball. The rotating shaft 35 is rotatably connected to the through hole.

[0041] Example 3:

[0042] like Figure 7 As shown, when the amount of granules fed is appropriate, the motor stops running to protect the roundness of the granules. At the same time, the operator rotates the shaft 35, which drives the disc 33 to rotate. The disc 33 rotates and moves upward through the threaded groove, increasing the compressive force on the spring 34. Only when the gas above the airflow block 32 increases further will it exceed the force of the spring 34, thus pressing the airflow block 32 down. The intensity of the gas ejection is further enhanced, which can blow the granules in the hopper 11 to tumble. This ensures the roundness of the granules and dries them as quickly and efficiently as possible. Moreover, the frequency of intermittent jetting is reduced, which can avoid multiple high-intensity jets of hot air that could damage the granules and protect the quality of the granules.

[0043] The sphere includes an upper hemisphere 36 and a lower hemisphere 37. The bottom of the upper hemisphere 36 is magnetically connected to a limiting rod. The left side of the lower hemisphere 37 is provided with a circular hole, and the limiting rod is inserted into the circular hole to connect the upper hemisphere 36 and the lower hemisphere 37.

[0044] The upper hemisphere 36 is fixed to the bottom of the screw 39 and has a round hole 361 at the bottom. A cylinder 371 is provided above the lower hemisphere 37 and is inserted into the round hole 361.

[0045] The cylinder 371 has grooves on its left and right sides, and the round hole 361 has protrusions on its front and rear sides.

[0046] After the bottom surface of the lower hemisphere 37 is tightly fitted with the upper surface of the airflow block 32, the screw 39 is rotated and the protrusion is inserted into the groove, that is, the lower hemisphere 37 moves upward.

[0047] A limiting block 38 is provided above the airflow block 32, and the limiting block 38 is fixed to the inner wall of the regulating cavity 31.

[0048] The lower hemisphere 37 is magnetically attracted to the upper hemisphere 36, thus connecting the lower hemisphere 37 and the upper hemisphere 36, preventing the lower hemisphere 37 from detaching from the upper hemisphere 36, and the magnetic attraction allows the upper hemisphere 36 to rotate smoothly.

[0049] Example 4:

[0050] When the amount of particles added at one time increases compared to that in Example 3, and the particles are relatively moist, in order to avoid incomplete drying, the disc 33 presses the spring 34 upward, making the force between the airflow block 32 and the lower hemisphere 37 greater. Then, the screw 39 is rotated, and the lower hemisphere 37 remains stationary due to the force of the airflow block 32. At the same time, the screw 39 drives the upper hemisphere 36 to rotate, so that the protrusion of the circular hole 361 is aligned with the groove of the cylinder 371, so that the protrusion is inserted into the groove. The lower hemisphere 37 loses the support of the upper hemisphere 36. At this time, the air pressure above the airflow block 32 is greater than the force of the spring 34, which can quickly press the airflow block 32 down to release pressure. In order to ensure the duration of pressure release, the lower hemisphere 37 is affected by gravity and slides along the protrusion through the groove, thus slowly moving downward until it is in contact with the airflow block 32 again. During this process, the airflow time is guaranteed, and more and stronger high-temperature airflow can be circulated, so as to dry the more moist particles more quickly.

[0051] Airflow regulators have a simple structure, low manufacturing cost, and are more efficient in controlling airflow and have better performance compared to airflow valves.

[0052] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reciprocating circulating dryer based on airflow regulation, comprising a drying chamber (1) and a reciprocating drying mechanism, characterized in that: The drying chamber (1) includes a hopper (11), a motor, a stirring blade (12), and a threaded plug (13). The reciprocating drying mechanism includes a ring pipe (21), a connecting block (22), a hydraulic chamber (23), a hydraulic plate (231), a hydraulic rod (232), and an airflow regulating part. The airflow regulating part includes an regulating chamber (31). The hopper (11) is fixedly installed on the bottom of the inner wall of the drying chamber (1), and the bottom is threaded and threadedly connected to the threaded plug (13). The motor is fixedly installed in the drying chamber (1), and its output end is fixed to the stirring blade (12). The stirring blade (12) is located in the hopper (11). The surface of the hopper (11) is provided with several air holes. The hydraulic chamber (23) is fixedly installed below the drying chamber (1), and the hydraulic plate (231) is slidably connected to the hydraulic chamber (232). The inner wall of the drying chamber (1) is fixedly installed on the connecting block (22), and the bottom of the connecting block (22) is fixedly connected to the hydraulic plate (231) through the hydraulic rod (232). Several air pipes are provided around the inner side of the ring pipe (21). The regulating chamber (31) is fixedly installed above the drying chamber (1), and the top is connected to the external circulation pump pipe, and the bottom is connected to the ring pipe (21) with a hose. A circulation pipe is connected between one side of the drying chamber (1) and the external circulation pump, and the external circulation pump is connected to the external hot air pipe. The bottom of the hydraulic chamber (23) is connected to the external liquid pump pipeline, and the ring pipe (21) is located outside the hopper (11); the inner wall of the regulating chamber (31) is provided with an airflow block (32), the middle of the airflow block (32) is provided with an airflow hole, and the edge is conical; a threaded hole is opened above the regulating chamber (31), and a screw (39) is threadedly connected inside the threaded hole; a ball is fixedly connected to the bottom end of the screw (39), and the ball is located in the middle position above the airflow block (32); The inner wall of the regulating cavity (31) is provided with a threaded groove, and a disc (33) is threadedly connected in the threaded groove. The surface of the disc (33) is provided with two air holes. A spring (34) is provided between the disc (33) and the airflow block (32). The airflow block (32) is slidably connected in the regulating cavity (31).

2. The reciprocating circulating dryer based on airflow regulation according to claim 1, characterized in that: A rotating shaft (35) is fixed above the disk (33), and a through hole is provided in the middle of the screw (39) and the ball, and the rotating shaft (35) is rotatably connected in the through hole.

3. The reciprocating circulating dryer based on airflow regulation according to claim 2, characterized in that: The sphere comprises an upper hemisphere (36) and a lower hemisphere (37). The bottom of the upper hemisphere (36) is magnetically connected to a limiting rod. The left side of the lower hemisphere (37) is provided with a circular hole, and the limiting rod is inserted into the circular hole to connect the upper hemisphere (36) and the lower hemisphere (37). The upper hemisphere (36) is fixed to the bottom of the screw (39), and a circular hole (361) is provided at the bottom. A cylinder (371) is provided above the lower hemisphere (37), and the cylinder (371) is inserted into the circular hole (361).

4. The reciprocating circulating dryer based on airflow regulation according to claim 3, characterized in that: The cylinder (371) has grooves on its left and right sides, and the circular hole (361) has protrusions on its front and rear sides. After the bottom surface of the lower hemisphere (37) is tightly attached to the upper surface of the airflow block (32), the screw (39) is rotated and the protrusions are inserted into the grooves, that is, the lower hemisphere (37) moves upward.

5. The reciprocating circulating dryer based on airflow regulation according to claim 4, characterized in that: A limiting block (38) is provided above the airflow block (32), and the limiting block (38) is fixed to the inner wall of the regulating cavity (31).

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