Flash dryer

Abstract

A flash evaporation drying machine comprises a flash evaporation drying machine body, hot air is conveyed into the flash evaporation drying machine body through an air inlet slit, an air baffle is arranged at the air inlet slit, two connecting rods are fixedly connected to the air baffle, two limiting sleeves are fixed to the inner side wall of the flash evaporation drying machine body, and sliding holes are formed in the two limiting sleeves. The top ends of the two connecting rods penetrate through the two sliding holes correspondingly and are fixedly provided with transmission plates, springs are fixedly connected between the transmission plates and the limiting sleeves, a double-shaft-extension motor is installed on the outer side wall of the flash evaporation drying machine body, bevel gears are fixed to two output shafts of the double-shaft-extension motor, crown gears are meshed with the bevel gears, transmission rods are fixed to the crown gears, and the transmission rods are fixedly connected with the transmission plates. The other end of the transmission rod penetrates into the flash drying machine body and is fixedly connected with a cam, and the edge of the cam makes contact with the top end of the transmission plate all the time. According to the utility model, the wind shield can be driven by the double-shaft extension motor to automatically move up and down, so that the opening degree of the air inlet slit is automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a flash dryer. Background Art

[0002] Flash dryer is a new type of continuous drying equipment that integrates drying, crushing and screening. The drying time of wet materials in the drying tower is only 5 to 8 seconds, and the water evaporates instantly.

[0003] The Chinese patent with announcement number CN205156509U discloses a composite heat transfer rotary flash drying system, including a rotary flash dryer, a hot air device connected to the hot air inlet provided on the lower side of the rotary flash dryer, a material feeding device connected to the material inlet provided on the middle side of the rotary flash dryer, and a gas-material separation device connected to the air outlet provided on the upper side of the rotary flash dryer, and a heating jacket provided on the outer side of the drying section side wall in the middle of the rotary flash dryer. The utility model improves the rotary flash drying system, mainly by transforming the heat transfer mode in the rotary flash dryer from convection conduction to conduction-convection composite conduction mode, thereby improving the heat transfer efficiency in the material drying process, reducing the energy consumption of the equipment, improving the powder drying efficiency, and reducing the equipment operation cost.

[0004] However, the size of the air inlet slit of the utility model cannot be adjusted, and the gap cannot be reduced according to production needs to increase the air output force. During the production process, the air output force is insufficient and the wind pressure is low. The material cannot effectively rise to the drying section, and the material accumulates in the agitator and even blocks the air inlet slit, making production impossible.

[0005] Therefore, the utility model proposes a new technical solution to solve the problem that the size of the air inlet slit cannot be adjusted and the gap cannot be reduced according to production needs to increase the air outlet force. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a flash dryer to solve the problem that the size of the air inlet slit cannot be adjusted and the gap cannot be reduced according to production needs to increase the air outlet force.

[0007] A flash dryer comprises a flash dryer body of a cylindrical structure, a hot air distributor with a hot air inlet, the hot air distributor conveys hot air into the flash dryer body through an air inlet slit, the air inlet slit is arranged along a circle of the flash dryer body, a wind shield plate along a circle of the air inlet slit is arranged at the air inlet slit, two connecting rods are symmetrically fixedly connected to the wind shield plate, two limiting sleeves are fixed on the inner side wall of the flash dryer body, the center positions of the two limiting sleeves are longitudinally penetrated with sliding holes, the top ends of the two connecting rods are divided into The two ends of the connecting rod respectively pass through the sliding holes on the two limit sleeves, and are fixed with transmission plates. A spring sleeved on the outside of the connecting rod is fixedly connected between the bottom end of the transmission plate and the top end of the limit sleeve. A double-axle extension motor is installed on the outer side wall of the flash dryer body. Bevel gears are fixed on the two output shafts of the double-axle extension motor. Crown gears are meshed on the bevel gears. A transmission rod is fixed on the crown gear. The other end of the transmission rod penetrates into the flash dryer body and is fixedly connected with a cam. The edge of the cam contacts the top of the transmission plate.

[0008] By adopting the above technical scheme, when it is necessary to reduce the opening of the air inlet slit, increase the air outlet force and increase the wind pressure, the double-axis extension motor is started, and the output shaft of the double-axis extension motor rotates to drive the bevel gear fixedly connected to it to rotate, and the rotation of the bevel gear drives the crown gear meshing with it to rotate, and the rotation of the crown gear drives the transmission rod fixedly connected to it to rotate, and the rotation of the transmission rod drives the cam fixedly connected to it to rotate, and when a part of the cam farther away from the axis contacts the transmission plate, the transmission plate moves downward, the spring is compressed to form an upward elastic force, and the downward movement of the transmission plate drives the connecting rod fixedly connected to it to move downward along the limit sleeve, and the connecting rod drives the wind shield fixedly connected to it to move downward, and the double-axis extension motor is turned off, the opening of the air inlet slit is reduced, the air outlet force is increased, and the wind pressure is increased, so that the material can effectively rise to the drying section, avoiding the situation where the material is piled up in the agitator or the air inlet slit is blocked. Similarly, when the opening of the air inlet slit needs to be increased again, the double-axle extension motor is restarted. As the cam continues to rotate, the part of the cam farther from the axis no longer contacts the transmission plate. Under the action of the spring force, the transmission plate moves upward, thereby driving the wind shield plate to move upward. When the part of the cam closer to the axis contacts the transmission plate, the air inlet slit is fully opened, and the spring is in its original state without force. The utility model can drive the wind shield plate to automatically move up and down through the double-axle extension motor, thereby automatically adjusting the opening of the air inlet slit.

[0009] A further configuration of the utility model is that the transmission rod is rotatably connected to the side wall of the flash dryer body via a bearing.

[0010] By adopting the above technical solution, the transmission rod can stably rotate on the side wall of the flash dryer body.

[0011] The utility model is further configured as follows: a plurality of universal balls which are fitted with the connecting rod are inlaid on the hole wall of the sliding hole.

[0012] By adopting the above technical solution, the setting of the universal ball improves the smoothness of the connecting rod when it moves up and down.

[0013] A further configuration of the utility model is that the double-axle extension motor is a brake-type servo motor.

[0014] By adopting the above technical solution, after the double-axle extension motor is turned off, the output shaft of the double-axle extension motor cannot rotate, thereby fixing the cam.

[0015] The utility model is further configured as follows: an annular side block is fixed at the top edge of the limiting sleeve, and the transmission plate is inserted into the annular side block in a clearance fit manner.

[0016] By adopting the above technical solution, the provision of the annular side block can prevent the material from adhering to the part of the connecting rod between the limiting sleeve and the transmission plate, thereby affecting the up and down movement of the connecting rod.

[0017] The utility model is further configured as follows: a plurality of slide grooves are provided on the inner side wall of the annular side guard, and a sliding block for inserting into and moving in the slide grooves is fixed on the transmission plate.

[0018] By adopting the above technical solution, when the transmission plate moves up and down in the annular side block, the slider moves in the slide groove, which improves the stability of the transmission plate during movement, and also improves the tightness between the transmission plate and the annular side block to prevent materials from entering the annular side block.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model can drive the wind shield plate to automatically move up and down through the double-axis extension motor, thereby automatically adjusting the opening of the air inlet slit.

[0021] 2. When the utility model is in use, the material will not affect the up and down movement of the wind shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a flash dryer of the utility model;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 The utility model is a schematic structural diagram of a double-axle extension motor, a bevel gear and a crown gear of a flash dryer.

[0025] Figure numerals: 1. flash dryer body; 2. hot air inlet; 3. hot air distributor; 4. air inlet slit; 5. wind shield; 6. connecting rod; 7. limit sleeve; 8. transmission plate; 9. spring; 10. double-axle extension motor; 11. bevel gear; 12. crown gear; 13. transmission rod; 14. cam; 15. universal ball; 16. annular side stop; 17. slide groove; 18. slider. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] A flash dryer, such as Figure 1-Figure 3 As shown, it includes a flash dryer body 1 of a cylindrical structure, a hot air distributor 3 with a hot air inlet 2, and the hot air distributor 3 transports hot air into the flash dryer body 1 through an air inlet slit 4, and the air inlet slit 4 is arranged along the flash dryer body 1. A windshield 5 is provided at the air inlet slit 4 along the air inlet slit 4. Two connecting rods 6 are symmetrically fixedly connected to the windshield 5. Two limiting sleeves 7 are fixed on the inner side wall of the flash dryer body 1, and sliding holes are longitudinally penetrated at the center positions of the two limiting sleeves 7. The top ends of the two connecting rods 6 pass through the sliding holes on the two limiting sleeves 7 respectively, and are fixed with transmission plates 8, and a spring 9 arranged on the outside of the connecting rod 6 is fixedly connected between the bottom end of the transmission plate 8 and the top end of the limiting sleeve 7. An annular side block 16 is fixed at the top edge of the limiting sleeve 7, and the transmission plate 8 is inserted into the annular side block 16 in a clearance fit manner. The setting of the annular side block 16 can prevent materials from sticking to the part of the connecting rod 6 between the limiting sleeve 7 and the transmission plate 8, which affects the up and down movement of the connecting rod 6. A plurality of slide grooves 17 are provided on the inner side wall of the annular side block 16, and a slider 18 for inserting into and moving in the slide groove 17 is fixed on the transmission plate 8. When the transmission plate 8 moves up and down in the annular side block 16, the slider 18 moves in the slide groove 17, which improves the stability of the transmission plate 8 when it moves, and also improves the tightness between the transmission plate 8 and the annular side block 16, preventing materials from entering the annular side block 16.

[0028] A double-axle extension motor 10 is installed on the outer side wall of the flash dryer body 1, and bevel gears 11 are fixed on the two output shafts of the double-axle extension motor 10. A crown gear 12 is meshed on the bevel gear 11, and a transmission rod 13 is fixed on the crown gear 12. The other end of the transmission rod 13 penetrates into the flash dryer body 1 and is fixedly connected to a cam 14, and the edge of the cam 14 contacts the top of the transmission plate 8.

[0029] Additionally, the transmission rod 13 is rotatably connected to the side wall of the flash dryer body 1 via a bearing, and the transmission rod 13 can stably rotate on the side wall of the flash dryer body 1 .

[0030] A plurality of universal balls 15 that fit the connecting rod 6 are inlaid on the wall of the sliding hole. The arrangement of the universal balls 15 improves the smoothness of the connecting rod 6 when it moves up and down.

[0031] The double-axle extension motor 10 is a brake-type servo motor. After the double-axle extension motor 10 is closed, the output shaft of the double-axle extension motor 10 cannot rotate, thereby fixing the cam 14 .

[0032] Working principle: when it is necessary to reduce the opening of the air inlet slit 4, increase the air outlet force and increase the wind pressure, start the double-axis extension motor 10, the output shaft of the double-axis extension motor 10 rotates to drive the bevel gear 11 fixedly connected thereto to rotate, the rotation of the bevel gear 11 drives the crown gear 12 meshing therewith to rotate, the rotation of the crown gear 12 drives the transmission rod 13 fixedly connected thereto to rotate, the rotation of the transmission rod 13 drives the cam 14 fixedly connected thereto to rotate, when a part of the cam 14 farther from the axis contacts the transmission plate 8, the transmission plate 8 moves downward, the spring 9 is compressed to form an upward elastic force, the downward movement of the transmission plate 8 drives the connecting rod 6 fixedly connected thereto to move downward along the limit sleeve 7, the connecting rod 6 drives the wind shield 5 fixedly connected thereto to move downward, and the double-axis extension motor 10 is closed, the opening of the air inlet slit 4 is reduced, the air outlet force is increased, and the wind pressure is increased, so that the material can effectively rise to the drying section, avoiding the situation where the material is piled up in the agitator or the air inlet slit 4 is blocked. Similarly, when the opening of the air inlet slit 4 needs to be increased again, the double-axle extension motor 10 is restarted. As the cam 14 continues to rotate, the part of the cam 14 that is farther from the axis no longer contacts the transmission plate 8. Under the action of the elastic force of the spring 9, the transmission plate 8 moves upward, thereby driving the windshield plate 5 to move upward. When the part of the cam 14 that is closer to the axis contacts the transmission plate 8, the air inlet slit 4 is fully opened, and the spring 9 is in the original state without the action of force. The utility model can drive the windshield plate 5 to move up and down automatically through the double-axle extension motor, thereby automatically adjusting the opening of the air inlet slit 4.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flash dryer, comprising a flash dryer body (1) of a cylindrical structure, a hot air distributor (3) with a hot air inlet (2), the hot air distributor (3) conveying hot air into the flash dryer body (1) through an air inlet slit (4), the air inlet slit (4) extending around the flash dryer body (1), a windshield (5) extending around the air inlet slit (4) being provided at the air inlet slit (4), characterized in that: Two connecting rods (6) are symmetrically fixedly connected to the windshield plate (5), and two limiting sleeves (7) are fixedly connected to the inner side wall of the flash dryer body (1). The center positions of the two limiting sleeves (7) are longitudinally penetrated with sliding holes. The top ends of the two connecting rods (6) pass through the sliding holes on the two limiting sleeves (7) respectively, and are fixed with transmission plates (8). A spring (9) sleeved on the outside of the connecting rod (6) is fixedly connected between the bottom end of the transmission plate (8) and the top end of the limiting sleeve (7). ), a double-axle extension motor (10) is installed on the outer wall of the flash dryer body (1), bevel gears (11) are fixed on the two output shafts of the double-axle extension motor (10), a crown gear (12) is meshed on the bevel gear (11), a transmission rod (13) is fixed on the crown gear (12), the other end of the transmission rod (13) penetrates into the flash dryer body (1) and is fixedly connected to a cam (14), the edge of the cam (14) is in contact with the top end of the transmission plate (8).

2. A flash dryer according to claim 1, characterized in that: The transmission rod (13) is rotatably connected to the side wall of the flash dryer body (1) via a bearing.

3. A flash dryer according to claim 1, characterized in that: A plurality of universal balls (15) which fit the connecting rod (6) are inlaid on the wall of the sliding hole.

4. A flash dryer according to claim 1, characterized in that: The double-axle extension motor (10) is a brake-type servo motor.

5. A flash dryer according to claim 1, characterized in that: An annular edge block (16) is fixed at the top edge of the limiting sleeve (7), and the transmission plate (8) is inserted into the annular edge block (16) in a clearance fit manner.

6. A flash dryer according to claim 5, characterized in that: A plurality of slide grooves (17) are provided on the inner side wall of the annular side block (16), and a sliding block (18) for inserting into and moving in the slide groove (17) is fixed on the transmission plate (8).

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