Drum-type dryer

Abstract

The utility model relates to the technical field of drying, and discloses a drum-type drying machine which comprises a drying part, the drying part comprises a drying box body and a drying drum, the drying drum comprises a drum body and a kiln head, the drum body is in a hollow cylinder shape with one closed end, a plurality of through holes are formed in the side wall of the drum body, a spiral piece and a plurality of material turning rods are fixedly arranged in the drum body, and the through holes are communicated with the through holes. The spiral piece is connected with the inner wall of the barrel, the material turning rod is arranged in the direction parallel to the axis of the barrel, the kiln head is rotatably connected with the open end of the barrel, the barrel penetrates through the drying box and is rotatably connected with the drying box, the kiln head is fixedly connected with the drying box, and a feeding port and a discharging port are sequentially formed in the kiln head from top to bottom. And cabin doors are arranged in the feed port and the discharge port. The drum-type dryer is uniform in drying and capable of achieving drying production of large-batch materials, feeding and discharging of the materials are located at the same end of the equipment, and connection of front and back procedures is facilitated when the drum-type dryer is applied to a production line.

Description

Technical Field

[0001] The utility model relates to the technical field of drying, in particular to a drum type drying machine. Background Art

[0002] In industrial production, dryers are a relatively common drying equipment, which usually have multiple modes such as belt drying, drum drying, box drying, tower drying, etc. They are especially common in the production of tea, medicinal materials, grains and other products. In industrial production, drying, as an important process, has always had high demands for improving drying efficiency, energy saving and environmental protection. Dryers in the prior art are mostly small equipment, which can only dry small batches of materials at a time, and it is difficult to meet the requirements for production line capacity expansion. If the dryer product size is simply expanded to dry large batches of materials, its structural form will easily cause material accumulation, resulting in uneven drying. In addition, when applied to a production line, the design of the dryer also needs to consider the connection between the previous and subsequent processes. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a drum dryer with a reasonable structural arrangement, which can realize the drying production of large quantities of materials, and the material feed and discharge are located at the same end of the equipment, which is convenient for the connection between the front and rear processes when applied to the production line.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A drum dryer comprises a drying part, which comprises a drying box and a drying cylinder, which comprises a cylinder body and a kiln head, wherein the cylinder body is in the shape of a hollow cylinder with one end closed, and a plurality of through holes are opened on the side wall of the cylinder body, a spiral sheet and a plurality of turning rods are fixedly arranged in the cylinder body, the spiral sheet is connected to the inner wall of the cylinder body, the turning rod is arranged in a direction parallel to the axis of the cylinder body, the kiln head is rotatably connected to the open end of the cylinder body, the cylinder body passes through the drying box body and is rotatably connected to the drying box body, the kiln head is fixedly connected to the drying box body, a feed port and a discharge port are arranged on the kiln head from top to bottom, and hatches are arranged in the feed port and the discharge port. High-temperature gas is connected to the drying box, and the high-temperature gas can enter and exit the cylinder through the through hole to dry the material in the cylinder; during drying, the drying cylinder rotates in the drying box, and the spiral blades can drive the material to move along the axial direction of the cylinder, and the turning rod can turn the material, so that the material can be turned with multiple degrees of freedom during the drying process, which can effectively improve the uniformity of drying. The large-size design of the drying cylinder is suitable for drying large quantities of materials; the feed port and the discharge port are both arranged on one side of the equipment and are fixed, which is conducive to the connection between the front and back processes of drying on the production line.

[0006] Furthermore, it also includes a heat source, an air inlet pipe and a return air pipe, the heat source includes a box, the lower part of the drying box is connected to the lower part of the box through the air inlet pipe, a hot air blower is arranged in the air inlet pipe, and the upper part of the drying box is connected to the upper part of the box through the return air pipe. The high-temperature gas generated by the heat source enters the drying box through the air inlet pipe, and after drying is completed, the high-temperature gas returns to the box through the return air pipe to realize waste heat recovery.

[0007] Furthermore, the box body and the drying box body are arranged side by side, and the kiln head is arranged on a side of the box body away from the drying box body.

[0008] Furthermore, a dehumidification port is provided on the top of the drying box body, a dehumidification fan is provided in the dehumidification port, and a fresh air valve is provided on the box body, and dehumidification can be performed regularly through the linkage between the dehumidification fan and the fresh air valve.

[0009] Furthermore, a water tank, an induced draft fan and a chimney are arranged outside the box, the air suction end of the induced draft fan is connected to the inside of the box, the air discharge end of the induced draft fan is connected to the water tank, the chimney is arranged vertically, and the bottom end of the chimney is connected to the water tank. The induced draft fan can be used to draw the high-temperature exhaust gas in the box into the water in the water tank, and then discharged from the chimney after cooling and dust removal.

[0010] Specifically, support mechanisms are provided at both ends of the drying cylinder, and the support mechanisms include two support seats, and the support seats are fixedly connected to the drying box body. Rollers are rotatably provided on the support seats, and the drying cylinder is placed on the four rollers to achieve a transmittable connection between the cylinder body and the drying box body when the drying cylinder is designed to be large in size.

[0011] Specifically, a first gear A is fixedly sleeved at one end of the drying cylinder, and a driving device and a second gear A are arranged outside the drying box body. The driving device is used to drive the second gear A to rotate, and the second gear A is meshed with the first gear A. The driving device can drive the drying cylinder to rotate via the second gear A and the first gear A.

[0012] Furthermore, the drying cylinder has a first gear B fixedly sleeved on one end away from the first gear A, and also includes a second gear B and a transmission shaft. The second gear B is rotatably arranged outside the drying box body, and the second gear B is meshed with the first gear B. The second gear B and the second gear A are respectively fixedly sleeved on both ends of the transmission shaft. Through this arrangement, under the large-size design of the drying cylinder, the driving device can drive the two ends of the drying cylinder to rotate synchronously to ensure the stability of the rotation process of the drying cylinder.

[0013] The beneficial effects of the utility model are:

[0014] The drum dryer includes a drying part and a heat source. The drying part includes a drying box and a drying drum. The drying drum includes a drum body and a kiln head. The drying drum runs through the drying box body horizontally. The drum body is rotatably arranged in the drying box body. A through hole is provided on the drum body. A spiral blade and a plurality of turning rods are fixedly arranged in the drum body. The kiln head is rotatably arranged at the open end of the drum body and is fixedly connected to the drying box body. A feed port and a discharge port are arranged on the kiln head. When drying, the material is added into the drum body through the feed port. With the forward and reverse rotation of the drum body, the material can move back and forth in the drum body along the axis direction of the drum body driven by the spiral blade. At the same time, the material is evenly turned under the action of the turning rod. In this process, the high-temperature gas generated by the heat source enters the drying box body and passes through the through hole to dry the material. It can be seen that the material is turned over with multiple degrees of freedom during the drying process, which can effectively improve the drying efficiency and uniformity of the material. The drum body can be designed to be large in size, which is suitable for drying large quantities of materials. In addition, the kiln head is fixedly arranged on one side of the drying box, that is, its feed port and discharge port are arranged on the same side of the equipment and the position remains unchanged, which is convenient for the connection between the front and rear processes of drying on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external structure of a drum type drying machine of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a drying part in a drum type drying machine of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a drying drum in a drum type drying machine of the utility model;

[0018] Figure 4 This is a structural schematic diagram of a drum in a drum type drying machine of the utility model;

[0019] Figure 5 This is a schematic diagram of the support and drive structure of a drying drum on a drying box in a drum-type drying machine of the utility model;

[0020] In the figure, 100-drying section, 110-drying cylinder, 111-cylinder, 112-kiln head, 113-through hole, 114-spiral sheet, 115-turning rod, 116-feeding port, 117-discharging port, 120-drying box, 121-dehumidification port, 130-support seat, 131-roller, 132-first gear A, 133-first gear B, 134-drive shaft, 200-heat source, 201-box, 202-fresh air valve, 210-inlet pipe, 220-return air pipe, 230-water tank, 240-induced draft fan, 250-chimney, 260-biomass pellet burner. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0022] like Figures 1 to 5 As shown, a drum type drying machine includes a drying section 100 , and the drying section 100 includes a drying box 120 and a drying drum 110 .

[0023] like Figure 3 , Figure 4 As shown, the drying cylinder 110 includes a cylinder body 111 and a kiln head 112. The cylinder body 111 is in the shape of a hollow cylinder with one end closed. A plurality of through holes 113 are provided on the side wall of the cylinder body 111 (the accompanying drawings only show the structure of some of the through holes 113. In practice, the through holes 113 are distributed on the side wall of the entire cylinder body 111). A spiral blade 114 and a plurality of turning rods 115 are fixedly arranged in the cylinder body 111. The spiral blade 114 is connected to the inner wall of the cylinder body 111, and the turning rod 115 is arranged in a direction parallel to the axis of the cylinder body 111.

[0024] like Figure 2 As shown, in the drying section 100, the cylinder 111 passes through the drying box 120, and the cylinder 111 is arranged outside the drying box 120. The cylinder 111 is rotatably connected to the drying box 120, the kiln head 112 is fixedly connected to the drying box 120, and the kiln head 112 is rotatably connected to the open end of the cylinder 111. The kiln head 112 is sequentially provided with a feed port 116 and a discharge port 117 from top to bottom, and hatches are provided in the feed port 116 and the discharge port 117.

[0025] When the drum dryer is in use, high-temperature gas is continuously introduced into the drying box 120, and the high-temperature gas can enter and exit the cylinder 111 through the through hole 113. First, the hatch of the feed port 116 is opened to add materials, and at the same time, the cylinder 111 is rotated forward in the drying box 120; during the forward rotation process, the spiral blade 114 rotates forward with the cylinder 111, and the material moves toward the closed end of the cylinder 111 driven by the spiral blade 114. Since the high-temperature gas enters and exits the cylinder 111 through the through hole 113, the material can be dried during the forward movement of the material. At the same time, during the forward rotation process, the turning rod 115 rotates together with the cylinder 111 to stir the material, which is conducive to the material entering the cylinder. The material is fully contacted with the high-temperature gas in the body 111 to make the drying more uniform; during the drying process, the drying cylinder 111 is rotated forward and reversely at a certain frequency, and the spiral blade 114 can drive the material to reciprocate in the drying cylinder 110 to implement drying; after the drying is completed, the hatch in the discharge port 117 is opened to make the cylinder 111 rotate in the opposite direction in the drying box 120, and the material moves backward under the action of the spiral blade 114 until it is discharged from the discharge port 117. Similarly, in this reverse rotation, the material is still dried by the high-temperature gas entering the cylinder 111 when it moves backward.

[0026] It can be seen from the above process that when the drum dryer is in use, the added material reciprocates along the axial direction of the cylinder 111 under the action of the spiral blade 114, and the material is evenly turned under the action of the turning rod 115. The material turns over with multiple degrees of freedom during the drying process, which can effectively improve the drying efficiency and drying uniformity of the material, and is suitable for drying large quantities of materials. At the same time, the feed port 116 and the discharge port 117 of the drum dryer are fixedly arranged on the same side of the equipment, which is convenient for the connection between the front and rear processes of the drying on the production line.

[0027] In specific implementation, Figure 1 , Figure 2 As shown, the drum dryer also includes a heat source 200, an air inlet pipe 210 and a return air pipe 220. The heat source 200 includes a housing 201, and a biomass pellet burner 260 or a heat energy device such as coal, natural gas, steam, pure electricity, air energy, etc. can be used to heat a heat exchanger disposed in the housing 201, and then heat is exchanged between the heat exchanger and the air in the housing 201 to generate high-temperature gas. During implementation, the heat exchanger in the housing 201 can be interchanged to be suitable for heating with different energy forms. The lower part of the drying housing 120 is connected to the lower part of the housing 201 through the air inlet pipe 210, and a hot air blower is arranged in the air inlet pipe 210. The operation of the hot air blower can continuously send the high-temperature gas generated in the housing 201 into the drying housing 120 to complete the aforementioned drying process. The upper part of the drying box 120 is connected to the upper part of the box 201 through the return air duct 220. The gas after drying in the drying box 120 returns to the box 201 through the return air duct 220. The high-temperature gas circulates in the box 201 and the drying box 120, thereby realizing waste heat recovery and achieving the purpose of energy saving.

[0028] During implementation, the box body 201 and the drying box body 120 are arranged side by side, and the kiln head 112 is arranged on the side of the box body 120 away from the drying box body 201. The whole equipment has a reasonable structure, which is convenient for the connection between the feed port 116 and the discharge port 117 on the kiln head 112 and the previous and next processes.

[0029] A dehumidification port 121 is also provided at the top of the drying box 120, and a dehumidification fan is provided in the dehumidification port 121. A fresh air valve 202 is provided on the box 201. When it is necessary to dehumidify the drying box 120 regularly, the fresh air valve 202 is opened and the dehumidification fan is started to discharge the humid air in the cylinder 120.

[0030] Furthermore, a water tank 230, an induced draft fan 240 and a chimney 250 are arranged outside the box body 201. The air suction end of the induced draft fan 240 is connected to the inside of the box body 201, and the air discharge end of the induced draft fan 240 is connected to the water tank 230. The chimney 250 is arranged vertically, and the bottom end of the chimney 250 is connected to the water tank 230. The water tank 230 is filled with water. When it is necessary to discharge the high-temperature exhaust gas in the box body 201, the induced draft fan 240 is started to pass the high-temperature exhaust gas in the box body 201 into the water in the water tank 230, and then the high-temperature exhaust gas is discharged to the outside through the chimney 250 after cooling and dust removal.

[0031] like Figure 5 As shown, in the specific implementation:

[0032] Support mechanisms are provided at both ends of the drying cylinder 110, and the support mechanisms include two support seats 130, which are fixedly connected to the drying box 120, and rollers 131 are rotatably provided on the support seats 130. The drying cylinder 110 is placed on the four rollers 131, thereby realizing a transmittable connection between the large-sized drying cylinder 110 and the drying box 120.

[0033] One end of the drying drum 110 is fixedly sleeved with a first gear A132, and a driving device and a second gear A are arranged outside the drying box 120. The driving device is used to drive the second gear A to rotate, and the second gear A is meshed with the first gear A132. The rotation of the driving device can drive the second gear A to rotate, and further drive the drying drum 110 to rotate through the first gear A132, so as to realize the forward and reverse rotation of the drying drum 110. Furthermore, the end of the drying drum 110 away from the first gear A132 is fixedly sleeved with a first gear B133, and also includes a second gear B and a transmission shaft 134. The second gear B is rotatably arranged outside the drying box, and the second gear B is meshed with the first gear B133. The second gear B and the second gear A are respectively fixedly sleeved on the two ends of the transmission shaft 134, thereby effectively keeping the two ends of the drum 110 rotating synchronously when driving the large-sized drum 110 to rotate. The above-mentioned driving device, the first gear A132, the second gear A, the first gear B133, and the second gear B are all arranged outside the drying box 120, which can reduce the influence of high-temperature gas on the driving device and the above-mentioned transmission structure.

[0034] It should be further explained that in actual applications, the drum dryer can arrange multiple drying cylinders 110 side by side in the drying box 120 (for example, the attached figure shows an implementation form in which two drying cylinders 110 are arranged) to dry large quantities of materials at the same time and improve drying efficiency.

[0035] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A drum drying machine, characterized in that: It includes a drying part, which includes a drying box and a drying cylinder. The drying cylinder comprises a cylinder body and a kiln head. The cylinder body is in the shape of a hollow cylinder with one end closed. A plurality of through holes are provided on the side wall of the cylinder body. A spiral sheet and a plurality of turning rods are fixedly arranged in the cylinder body. The spiral sheet is connected to the inner wall of the cylinder body. The turning rod is arranged in a direction parallel to the axis of the cylinder body. The kiln head is rotatably connected to the open end of the cylinder body. The cylinder penetrates the drying box and is rotatably connected to the drying box, the kiln head is fixedly connected to the drying box, and a feed port and a discharge port are sequentially arranged on the kiln head from top to bottom, and hatches are arranged in the feed port and the discharge port.

2. A drum drying machine according to claim 1, characterized in that: It also includes a heat source, an air inlet duct and a return air duct. The heat source includes a box body. The lower part of the drying box body is connected to the lower part of the box body through the air inlet duct. A hot air blower is arranged in the air inlet duct. The upper part of the drying box body is connected to the upper part of the box body through the return air duct.

3. A drum drying machine according to claim 2, characterized in that: The box body and the drying box body are arranged side by side, and the kiln head is arranged on a side of the box body away from the drying box body.

4. A drum drying machine according to claim 2, characterized in that: The top of the drying box body is provided with a dehumidification port, a dehumidification fan is provided in the dehumidification port, and a fresh air valve is provided on the box body.

5. A drum drying machine according to claim 2, characterized in that: A water tank, an induced draft fan and a chimney are arranged outside the box body, the air suction end of the induced draft fan is connected to the inside of the box body, the air exhaust end of the induced draft fan is connected to the water tank, the chimney is arranged vertically, and the bottom end of the chimney is connected to the water tank.

6. A drum drying machine according to claim 1, characterized in that: Support mechanisms are provided at both ends of the drying cylinder. The support mechanisms include two support seats. The support seats are fixedly connected to the drying box body. Rollers are rotatably provided on the support seats, and the drying cylinder is placed on the four rollers.

7. A drum drying machine according to claim 1, characterized in that: A first gear A is fixedly sleeved on one end of the drying cylinder, and a driving device and a second gear A are arranged outside the drying box body. The driving device is used to drive the second gear A to rotate, and the second gear A is meshed with the first gear A.

8. A drum drying machine according to claim 1, characterized in that: The drying cylinder has a first gear B fixedly sleeved on one end away from the first gear A, and also includes a second gear B and a transmission shaft. The second gear B is rotatably arranged outside the drying box body, the second gear B is meshed with the first gear B, and the second gear B and the second gear A are fixedly sleeved on both ends of the transmission shaft respectively.

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