Raw material rotary flash evaporation drying machine

Abstract

The utility model discloses a raw material rotary flash drying machine which comprises a cylinder body, an air heater is installed at the bottom of the cylinder body, a motor is fixedly connected to the bottom of the cylinder body, an output shaft of the motor is fixedly connected with a rotary rod, and the top of the rotary rod penetrates through and extends into the cylinder body. Uniformly distributed stirring rods are fixedly connected to the rotating rod, a filtering plate is fixedly connected to the top end of the rotating rod, an air outlet pipe is fixedly connected to the top of the filtering plate, the top end of the air outlet pipe penetrates through and extends to the outer side of the cylinder body, and a preheating cylinder is fixedly connected to the top of the cylinder body; and the preheating cylinder sleeves the air outlet pipe and is rotationally connected with the air outlet pipe. When raw materials are dried, waste heat in waste gas exhausted by the dried raw materials can be used for preheating the raw materials, the raw material pretreatment effect is achieved, the raw material drying efficiency is further improved, and the environmental protection capacity of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, and more specifically to a raw material rotary flash drying machine. Background Art

[0002] The rotary flash dryer is a new type of continuous drying equipment that integrates drying, crushing and screening. It is particularly suitable for drying filter cakes, pastes and slurries. The drying time of wet materials in the drying tower is only 5 to 8 seconds, and the water evaporates instantly. The quality of the dried product is closely related to the drying temperature, wind speed, air volume and crushing speed. The existing rotary flash dryer has a fixed structure and a single function. Only the stirring blades for crushing materials are set at the bottom of the drying cylinder. During use, the material may be taken out of the drying cylinder by hot air before it is completely crushed. There is a dead corner at the bottom of the drying cylinder, and some materials cannot be driven upward by the hot air, resulting in blockage at the bottom of the cylinder, which affects the drying effect to a certain extent.

[0003] In order to solve the above-mentioned problems, the utility model patent with authorization announcement number CN 215490599 U discloses a rotary flash dryer, including a drying cylinder, a feed pipe, a discharge pipe and a stirring paddle. The middle of the drying cylinder is provided with a feed pipe, the top of the drying cylinder is provided with a discharge pipe, the bottom of the drying cylinder is provided with a stirring paddle 1, and the hopper is provided with a stirring paddle 2. The bottom of the drying cylinder is provided with a wind disk for spraying hot air, and the upper surface of the wind disk is evenly distributed with spray pipes. The bottom of the wind disk is connected to an external fan with a heater through an air duct. A feeding auger is provided in the feed pipe, one end of the feeding auger extends into the drying cylinder, and the other end of the feeding auger extends to the bottom of the hopper. The material is preliminarily crushed by the stirring paddle 2 arranged in the hopper, and the secondary crushing is performed by the stirring paddle 1 arranged in the drying cylinder to ensure the crushing effect of the material, so as to improve the drying effect; the wind disk arranged at the bottom of the drying cylinder ensures uniform spray drying, eliminates the occurrence of dead corners, avoids clogging of the bottom of the barrel, and improves the drying efficiency.

[0004] In the above patent, after the hot air dries the raw materials, it will be continuously discharged from the discharge pipe. The discharged gas still has a certain temperature, which will be lost in the air, resulting in heat waste and affecting the environmental protection ability of the device. Therefore, a rotary flash dryer is needed that can use the waste heat of exhaust gas to preheat the raw materials. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a raw material rotary flash dryer to solve the background technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A raw material rotary flash dryer comprises a cylinder, a hot air blower is installed at the bottom of the cylinder, the bottom of the cylinder is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a rotating rod, the top of the rotating rod passes through and extends to the interior of the cylinder, the rotating rod is fixedly connected to an evenly distributed stirring rod, the top of the rotating rod is fixedly connected to a filter plate, the top of the filter plate is fixedly connected to an air outlet pipe, the top of the air outlet pipe passes through and extends to the outside of the cylinder, the top of the cylinder is fixedly connected to a preheating cylinder, the preheating cylinder is sleeved on the air outlet pipe and rotatably connected to the outside of the air outlet pipe, two heat-conducting rods are inserted through the outside of the air outlet pipe, and the bottom of the preheating cylinder is connected to two feeding pipes, the bottom ends of the two feeding pipes both pass through and extend to the interior of the cylinder, the inner walls of the two feeding pipes are fixedly connected to filter screens, and two unloading mechanisms are arranged on the outside of the cylinder.

[0008] As a further description of the above technical solution:

[0009] The unloading mechanism comprises an electric push rod, one end of the electric push rod close to the cylinder is inserted into the cylinder, one end of the electric push rod close to the rotating rod is fixedly connected to a sealing plate, and the top of the sealing plate is in contact with the feeding pipe.

[0010] As a further description of the above technical solution:

[0011] The end of the heat-conducting rod close to the air outlet pipe is rotatably connected to it, the outer side of the heat-conducting rod is fixedly connected with two groups of vertical rods arranged at equal distances, the inner side of the preheating cylinder is provided with an annular groove, and the end of the heat-conducting rod away from the air outlet pipe is fixedly connected with a gear meshing with the annular groove.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the annular groove is rotatably connected with a closing plate, and the closing plate is sleeved on the heat-conducting rod and rotatably connected thereto.

[0014] As a further description of the above technical solution:

[0015] Two scrapers are fixedly connected to the inner side of the closing plate, and the bottoms of the two scrapers are in contact with the inner wall of the preheating cylinder.

[0016] As a further description of the above technical solution:

[0017] The inner bottom wall of the cylinder is fixedly connected with a storage block, the storage block is sleeved on the rotating rod and rotatably connected thereto, and the top of the storage block is provided with evenly distributed air outlet holes.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] When drying the raw materials, this solution can use the residual heat in the exhaust gas discharged from the drying raw materials to preheat the raw materials, thereby achieving the effect of pretreatment of the raw materials, thereby improving the efficiency of drying the raw materials and improving the environmental protection ability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 For this utility model Figure 2 Enlarged view of part A in the middle;

[0023] Figure 4 This is a diagram showing the position relationship between the gas outlet and the heat conducting rod in the utility model.

[0024] Description of the numbers in the figure:

[0025] 1. Cylinder; 2. Hot air blower; 3. Motor; 4. Rotating rod; 5. Stirring rod; 6. Filter plate; 7. Exhaust pipe; 8. Preheating cylinder; 9. Heat-conducting rod; 10. Feed pipe; 11. Filter screen; 12. Unloading mechanism; 121. Electric push rod; 122. Sealing plate; 13. Vertical rod; 14. Annular groove; 15. Gear; 16. Closing plate; 17. Scraper; 18. Storage block; 19. Exhaust hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] See also Figures 1 to 4In the utility model: a raw material rotary flash drying machine comprises a cylinder 1, a hot air blower 2 is installed at the bottom of the cylinder 1, a motor 3 is fixedly connected to the bottom of the cylinder 1, a rotating rod 4 is fixedly connected to the output shaft of the motor 3, the top of the rotating rod 4 passes through and extends to the inside of the cylinder 1, a uniformly distributed stirring rod 5 is fixedly connected to the rotating rod 4, a filter plate 6 is fixedly connected to the top of the rotating rod 4, an air outlet pipe 7 is fixedly connected to the top of the filter plate 6, the top of the air outlet pipe 7 passes through and extends to the outside of the cylinder 1, a preheating cylinder 8 is fixedly connected to the top of the cylinder 1, and the preheating cylinder 8 is sleeved on the air outlet pipe 7 and is rotatably connected thereto, two heat-conducting rods 9 are inserted through the outer side of the air outlet pipe 7, the bottom of the preheating cylinder 8 is connected to two feeding pipes 10, the bottom ends of the two feeding pipes 10 both penetrate and extend into the interior of the cylinder 1, the inner walls of the two feeding pipes 10 are fixedly connected with filter screens 11, and two unloading mechanisms 12 are arranged on the outer side of the cylinder 1; the unloading mechanism 12 comprises an electric push rod 121, one end of the electric push rod 121 close to the cylinder 1 is inserted into the cylinder 1, and one end of the electric push rod 121 close to the rotating rod 4 is fixedly connected with a sealing plate 122, and the top of the sealing plate 122 is in contact with the feeding pipe 10.

[0028] In the utility model, when in use, two hot air blowers 2 input hot air into the cylinder 1, and the hot air will dry the raw materials inside the cylinder 1. During the process, the motor 3 is turned on to drive the rotating rod 4 to rotate. During the rotation of the rotating rod 4, the stirring rod 5 will be driven to stir the raw materials, thereby making the hot air contact with the raw materials evenly, thereby improving the effect of drying the raw materials. The dried materials will be discharged from the air outlet pipe 7 together with the air for collection, thereby realizing the drying process of the raw materials. In the process of drying the raw materials, the next batch of raw materials will be added to the preheating cylinder 8 from the feeding port at the top of the preheating cylinder 8. After the raw materials enter the preheating cylinder 8, the waste heat of the hot air flowing in the air outlet pipe 7 will heat the materials, thereby realizing the effect of preheating the raw materials. In addition, during the rotation of the rotating rod 4, the air outlet pipe 7 will be driven to rotate through the filter plate 6, and the outlet After the air pipe 7 rotates, it will drive the heat-conducting rod 9 to rotate and break up the agglomerated raw materials, thereby achieving the effect of pre-treatment of the raw materials. The filter screen 11 can filter the agglomerated materials until the agglomerated raw materials are broken up and then fall from the filter screen 11 into the feed pipe 10 for collection. During the storage of the raw materials inside the feed pipe 10, the material inside the cylinder 1 can also achieve the effect of preheating the raw materials. After all the raw materials inside the cylinder 1 are dried, the user turns on the electric push rod 121, and the electric push rod 121 drives the sealing plate 122 to leave the bottom of the feed pipe 10. At this time, the bottom of the feed pipe 10 loses its sealing effect, and the raw materials will fall from the feed pipe 10 into the cylinder 1, thereby achieving the addition of raw materials. Since the raw materials are broken and preheated, the efficiency of raw material drying can be effectively improved, thereby improving the drying efficiency of the device.

[0029] See also Figures 2 to 4, wherein: one end of the heat-conducting rod 9 close to the air outlet pipe 7 is rotatably connected to it, two groups of vertical rods 13 arranged at equal distances are fixedly connected to the outside of the heat-conducting rod 9, an annular groove 14 is opened on the inner side of the preheating cylinder 8, and one end of the heat-conducting rod 9 away from the air outlet pipe 7 is fixedly connected to a gear 15 meshing with the annular groove 14.

[0030] In the utility model, when the air outlet pipe 7 rotates to drive the heat-conducting rod 9 to crush and preheat the raw materials, the gear 15 at one end of the heat-conducting rod 9 will roll along the inner wall of the annular groove 14. Since the inner wall of the annular groove 14 is meshed with the gear 15, the heat-conducting rod 9 will be driven to rotate. After the heat-conducting rod 9 rotates, it will drive the vertical rod 13 to rotate. After the vertical rod 13 rotates, it will stir the raw materials, thereby improving the efficiency and effect of the raw material crushing.

[0031] See also Figures 2 to 4 , wherein: the inner wall of the annular groove 14 is rotatably connected with a closing plate 16, and the closing plate 16 is sleeved on the heat conducting rod 9 and rotatably connected thereto.

[0032] In the present invention, the setting of the closing plate 16 can close the annular groove 14, thereby preventing the raw material from entering the annular groove 14 and affecting the rotation of the gear 15, thereby improving the stability of the device.

[0033] See also Figure 4 , wherein: two scrapers 17 are fixedly connected to the inner side of the closing plate 16 , and the bottoms of the two scrapers 17 are in contact with the inner wall of the preheating cylinder 8 .

[0034] In the utility model, the scraper 17 can drive the raw material to move when the outlet pipe 7 rotates, allowing the raw material to slide along the inner wall of the preheating cylinder 8, thereby improving the filtering effect of the filter screen 11 on the raw material, and can scrape off the raw material attached to the inner wall of the preheating cylinder 8, thereby improving the practicality of the device.

[0035] See also Figure 2 , wherein: a storage block 18 is fixedly connected to the inner bottom wall of the cylinder 1, the storage block 18 is sleeved on the rotating rod 4 and rotatably connected thereto, and evenly distributed air outlet holes 19 are opened on the top of the storage block 18.

[0036] In the present invention, the cooperation between the placement block 18 and the air outlet 19 can allow the hot air to contact the raw material evenly, thereby improving the effect and efficiency of the device on drying the raw material.

[0037] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A raw material rotary flash dryer, comprising a cylinder (1), characterized in that: A hot air blower (2) is installed at the bottom of the cylinder (1), a motor (3) is fixedly connected to the bottom of the cylinder (1), an output shaft of the motor (3) is fixedly connected to a rotating rod (4), the top of the rotating rod (4) penetrates and extends into the interior of the cylinder (1), the rotating rod (4) is fixedly connected to evenly distributed stirring rods (5), the top of the rotating rod (4) is fixedly connected to a filter plate (6), the top of the filter plate (6) is fixedly connected to an air outlet pipe (7), the top of the air outlet pipe (7) penetrates and extends to the cylinder ( 1), a preheating cylinder (8) is fixedly connected to the top of the cylinder (1), the preheating cylinder (8) is sleeved on the outlet pipe (7) and rotatably connected thereto, two heat-conducting rods (9) are inserted through the outside of the outlet pipe (7), the bottom of the preheating cylinder (8) is connected to two feed pipes (10), the bottom ends of the two feed pipes (10) both penetrate and extend into the interior of the cylinder (1), the inner walls of the two feed pipes (10) are fixedly connected to filter screens (11), and two discharge mechanisms (12) are arranged on the outside of the cylinder (1).

2. A raw material rotary flash dryer according to claim 1, characterized in that: The unloading mechanism (12) comprises an electric push rod (121), one end of the electric push rod (121) close to the barrel (1) is inserted into the barrel (1), and one end of the electric push rod (121) close to the rotating rod (4) is fixedly connected to a sealing plate (122), and the top of the sealing plate (122) is in contact with the feed pipe (10).

3. A raw material rotary flash dryer according to claim 1, characterized in that: One end of the heat-conducting rod (9) close to the air outlet pipe (7) is rotatably connected thereto, two groups of vertical rods (13) arranged at equal distances are fixedly connected to the outer side of the heat-conducting rod (9), an annular groove (14) is provided on the inner side of the preheating cylinder (8), and one end of the heat-conducting rod (9) away from the air outlet pipe (7) is fixedly connected to a gear (15) meshing with the annular groove (14).

4. A raw material rotary flash dryer according to claim 3, characterized in that: The inner wall of the annular groove (14) is rotatably connected to a closing plate (16), and the closing plate (16) is sleeved on the heat conducting rod (9) and rotatably connected thereto.

5. A raw material rotary flash dryer according to claim 4, characterized in that: Two scrapers (17) are fixedly connected to the inner side of the closing plate (16), and the bottoms of the two scrapers (17) are in contact with the inner wall of the preheating cylinder (8).

6. A raw material rotary flash dryer according to claim 1, characterized in that: A storage block (18) is fixedly connected to the inner bottom wall of the cylinder (1); the storage block (18) is sleeved on the rotating rod (4) and rotatably connected thereto; and evenly distributed air outlet holes (19) are provided on the top of the storage block (18).

Images