Double-drum dryer with combined inner drum lifting board

Abstract

The utility model discloses a double-cylinder dryer with a combined type inner cylinder lifting plate, which relates to the technical field of drying equipment and comprises a rack, an inner cylinder and an outer cylinder are coaxially sleeved and rotatably arranged on the rack, a feed port and a discharge port are arranged on the rack, and the combined type lifting plate is arranged on the inner side wall of the inner cylinder. The combined shoveling plate comprises a plurality of movable shoveling plate units and inner cylinder lifting plate units which are uniformly distributed around a shaft along the inner wall of the inner cylinder, the movable shoveling plate units and the inner cylinder lifting plate units are distributed at intervals, each movable shoveling plate unit comprises a movable beating plate, and one end of the inner side of each movable shoveling plate unit is hinged to the corresponding movable beating plate; an arc-shaped shoveling plate is arranged on one side, deviating from the inner barrel lifting plate unit, of the movable striking plate; according to the technical scheme, by means of double-drum telescopic combined drying, heat loss is reduced, meanwhile, the combined shoveling plates designed on the inner drum can solve the problems that high-humidity and high-viscosity materials are prone to adhering to drum walls and being clustered, and the vibration scattering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a double-drum drying machine with a combined inner-drum material-lifting plate. Background Art

[0002] In the field of drying equipment, traditional drying equipment often faces technical challenges, particularly when processing highly viscous and wet materials. Specifically, in current drying processes, drying equipment for industrial sludge and municipal waste generally utilizes a combination of lifting plates, movable chains, and movable impact plates. While this combination can achieve a certain degree of dispersion and mixing when processing materials with a moisture content ≥50%, it suffers from significant shortcomings due to limitations in its operating principle. Specifically, the material picked up by the lifting plates falls freely, where it violently impacts the dryer drum due to acceleration. Due to the unique properties of highly viscous and wet materials, this impact can easily lead to severe adhesion between the material and the dryer drum. During the drying process, the material forms agglomerated particles, making it difficult to remove the crystallized water from these particles and significantly affecting the drying equipment's operating efficiency and product quality. Furthermore, most existing drying equipment utilizes single-drum dryers, which require a large footprint and experience high heat losses.

[0003] In order to solve this problem, technicians have tried various methods, such as improving the structural design of the dryer, adjusting the drying process parameters, etc. However, these methods can often only alleviate the problem to a certain extent, but cannot fundamentally solve the problem that high-humidity and high-viscosity materials are prone to sticking to the cylinder wall and forming agglomerates during the drying process. Therefore, it is necessary to develop a new type of drying equipment that can more effectively solve the problem that high-humidity and high-viscosity materials are prone to sticking to the cylinder wall and forming agglomerates during the drying process. The disclosure of this utility model is based on such technical background and actual needs, and proposes a double-drum dryer with a combined inner drum lifting plate, which aims to improve the drying efficiency and product quality by improving the internal structure of the dryer, so as to meet the industry's demand for high-efficiency and high-quality drying equipment. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem in the prior art that when processing high-humidity and high-viscosity materials, the materials should be prevented from adhering to the wall of the drying equipment over a large area and forming agglomerates. A double-drum dryer with a combined inner-drum lifting plate is provided. This solution utilizes a double-drum stacked drying method to reduce heat loss. At the same time, the combined lifting plate designed on the inner drum can improve the problem of high-humidity and high-viscosity materials easily adhering to the drum wall and forming agglomerates, thereby improving the vibration and dispersion effect.

[0005] The utility model is realized by the following technical solutions: a double-drum dryer with a combined inner drum lifting plate, comprising a frame, an inner drum and an outer drum coaxially mounted and rotatably arranged on the frame, the chambers of the inner drum and the outer drum being connected and the material flow directions being opposite, a feed port communicating with the inner drum chamber being provided on the frame, a discharge port communicating with the outer drum being provided on the frame, a combined lifting plate being provided on the inner side wall of the inner drum, the combined lifting plate comprising a plurality of movable lifting plate units uniformly distributed around the axis along the inner wall of the inner drum, an inner drum lifting plate The material plate unit, the movable copying plate unit and the inner cylinder material lifting plate unit are distributed at intervals, the inner cylinder material lifting plate unit is V-shaped, the movable copying plate unit includes a movable striking plate, one end of the inner side of the movable copying plate unit is hinged, and an arc-shaped copying plate is provided on the side of the movable striking plate away from the inner cylinder material lifting plate unit, and a material leakage gap is provided on the movable striking plate, and the arc-shaped copying plate is bent inward toward the side of the movable striking plate; the outer cylinder material lifting plates are also evenly distributed around the axis on the inner side wall of the outer cylinder, and a suspension chain is provided on the back of the outer cylinder material lifting plate.

[0006] In order to further optimize the present invention, the following technical solutions may be preferably used:

[0007] Preferably, a spiral feed plate is provided on the inner cylinder at a position corresponding to the feed port.

[0008] Preferably, a curved portion is provided at the end of the outer cylinder lifting plate, and a supporting rib is provided at the back of the outer cylinder lifting plate.

[0009] Preferably, the inner drum lifting plate unit includes a plate body, a first bending portion is provided at the end of the plate body, the plate body is arranged radially along the dryer drum, and the first bending portion is bent toward the movable striking plate.

[0010] Preferably, the movable copying plate unit and the inner cylinder lifting plate unit are evenly arranged on the inner wall of the inner cylinder in a spiral manner, and the outer cylinder lifting plates are evenly arranged on the inner wall of the outer cylinder in a spiral manner.

[0011] Preferably, the movable striking plate includes a bottom plate and a top plate, a plurality of striking rods are radially arranged on the bottom plate and the top plate, the bottom plate is rotatably arranged on the dryer cylinder through a rotating shaft, and the two ends of the arc-shaped lifting plate are respectively arranged on the bottom plate and the top plate.

[0012] Preferably, a support roller group is symmetrically arranged on the frame at a position corresponding to the lower portion of the outer cylinder, a gear ring is circumferentially arranged on the outer side wall of the outer cylinder, and a driving gear for driving the outer cylinder to rotate is arranged on the frame, the driving gear is connected to a driving source, and the driving gear is meshed with the gear ring.

[0013] Preferably, a supporting member is provided between the inner cylinder material lifting plate unit and the movable striking plate. The supporting member is U-shaped, and both ends of the supporting member extend upward to a position between the free end of the inner cylinder material lifting plate unit and the movable striking plate.

[0014] The utility model has the following effects:

[0015] (1) Improve drying efficiency: Since the chambers of the inner cylinder and the outer cylinder are connected and the material flow directions are opposite, when the material flows between the inner cylinder and the outer cylinder, the heat of the inner cylinder and the outer cylinder can be fully utilized, thereby improving the drying efficiency.

[0016] (2) Optimize material flow: The combined lifting plates arranged on the inner wall of the inner cylinder include movable lifting plate units and inner cylinder lifting plate units. These lifting plates can effectively change the flow trajectory of the material, making the material more evenly distributed in the cylinder during the drying process, thereby avoiding the accumulation or dead corners of the material in the cylinder and improving the drying effect.

[0017] (3) The combined copying plate in this equipment utilizes the movable striking plate in the original drying process. On the basis of the original one, an arc-shaped copying plate is installed on the back to form a tangent relationship with the dryer cylinder. Since the material picked up by the lifting copying plate moves freely, the material that should have violently hit the cylinder wall under the action of acceleration now falls directly into the combined copying plate. Since the front half of the combined copying plate is a movable striking plate, all the materials will fall into the arc-shaped copying plate matched with it. When the cylinder rotates to the upper end, the movable striking plate is affected by gravity and collides with the adjacent lifting copying plate, which will shake up all the materials that fall into the arc-shaped copying plate and drop them to the bottom to continue repeating the process.

[0018] (4) The difficulty in drying high-humidity and high-viscosity materials mainly exists in the front section of the drying equipment. Because the curved scraper on the back of the combined scraper is tangent to the drying cylinder, it is difficult for the material to come into direct contact with the cylinder. Due to the action of the movable striking plate, the material can be repeatedly picked up and vibrated, thereby reducing the adhesion and adhesion of the material to the drying cylinder and the occurrence of agglomeration of the material during its own operation.

[0019] (5) Reduce equipment wear and maintenance frequency: Due to the improved vibration dispersion effect, the adhesion between the material and the drying equipment cylinder wall is greatly reduced, which means that the wear and tear of the equipment during operation will be reduced accordingly. Therefore, the maintenance frequency and maintenance cost of the equipment will also be reduced accordingly, thereby extending the service life of the equipment.

[0020] (6) Stable structure: The support design between the inner drum lifting plate unit and the movable striking plate enhances the structural stability of the equipment. This design not only effectively prevents the material from leaking from the equipment during the drying process, but also reduces the vibration and noise of the equipment during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a double-drum dryer;

[0022] Figure 2 This is a cross-sectional view of the internal structure of a double-drum dryer;

[0023] Figure 3 This is the layout diagram of the outer cylinder;

[0024] Figure 4 This is the layout diagram of the inner tube;

[0025] Figure 5 It is a three-dimensional structural diagram of the inner tube combined copy plate arrangement;

[0026] Figure 6 It is a side view of the arrangement of the combined copy plate of the inner cylinder;

[0027] Figure 7 This is an enlarged schematic diagram of the structure at A;

[0028] Figure 8 This is an enlarged schematic diagram of the structure at B;

[0029] Wherein: 1-frame; 2-inner cylinder; 3-outer cylinder; 4-feed port; 5-discharge port; 6-screw feed plate; 7-support roller group; 8-gear ring; 9-drive gear; 10-drive source;

[0030] 101-dryer cylinder; 102-inner cylinder lifting plate assembly; 103-movable lifting plate assembly; 104-supporting member; 105-plate body; 106-first bending portion; 107-bottom plate; 108-top plate; 109-beating rod; 110-arc-shaped lifting plate; 111-outer cylinder lifting plate; 112-suspension chain; 113-bending portion. DETAILED DESCRIPTION

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] 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 embodiments described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0033] Example 1

[0034] like Figure 1-8 As shown: A double-drum dryer with a combined inner drum lifting plate includes a frame 1, on which an inner drum 2 and an outer drum 3 are coaxially mounted and rotatably installed. The chambers of the inner drum 2 and the outer drum 3 are connected and the material flow directions are opposite. Since the chambers of the inner drum and the outer drum are connected and the material flow directions are opposite, when the material flows between the inner drum and the outer drum, the heat of the inner drum and the outer drum can be fully utilized, thereby improving the drying efficiency; a feed port connected to the inner drum chamber is installed on the frame, and a discharge port connected to the outer drum is installed on the frame, so that the material to be dried enters the inner drum from the feed port, and then enters the outer drum, and is discharged from the discharge port below.

[0035] The outer cylinder 3 is also provided with outer cylinder lifting plates 111 evenly distributed around the axis on the inner wall thereof, a suspension chain 112 is provided on the back of the outer cylinder lifting plates, a curved portion 113 is designed at the end of the outer cylinder lifting plates, and a supporting rib is provided at the back of the outer cylinder lifting plates to improve the supporting effect; a spiral feed plate is installed at the position corresponding to the feed port on the inner cylinder to facilitate material guiding; in a specific double-cylinder rotating structure, a support roller group 7 is symmetrically installed on the frame corresponding to the lower position of the outer cylinder, a gear ring 8 is circumferentially installed on the outer side wall of the outer cylinder, a driving gear 9 for driving the outer cylinder to rotate is installed on the frame 1, the driving gear is connected to a driving source 10, the driving gear is meshed with the gear ring, the supporting roller group is used to support the outer cylinder, and the driving gear and gear ring are used to drive the outer cylinder to rotate.

[0036] The inner drum 2 includes a dryer cylinder 101, and a movable copying plate assembly 103 and an inner drum lifting plate assembly 102 are installed on the inner wall of the dryer cylinder 101. The movable copying plate assembly includes a plurality of movable copying plate units 103 evenly distributed around the axis along the inner wall of the dryer cylinder. One end of the inner side of the movable copying plate unit is hingedly installed. The inner drum lifting plate assembly includes a plurality of inner drum lifting plate units evenly distributed around the axis along the inner wall of the dryer cylinder. The inner drum lifting plate unit is V-shaped, wherein the inner drum lifting plate unit includes a plate body 105, and a first bending portion 6 is designed at the end of the plate body 105. The plate body is arranged radially along the dryer cylinder, and the first bending portion 106 is bent toward the movable striking plate. The first bending portion 1 06. The bending angle range between the plate bodies 105 is 120° to 180°; the movable copying plate unit and the inner cylinder lifting plate unit are distributed at intervals, and the movable copying plate unit includes a movable striking plate. An arc copying plate is installed on the side of the movable striking plate away from the inner cylinder lifting plate unit. The movable striking plate is designed with a material leakage gap, and the arc copying plate is bent inward toward the side of the movable striking plate; the combined copying plate arranged on the inner side wall of the inner cylinder includes a movable copying plate unit and an inner cylinder lifting plate unit. These copying plates can effectively change the flow trajectory of the material, so that the material is more evenly distributed in the cylinder during the drying process, thereby avoiding the accumulation or dead corner of the material in the cylinder and improving the drying effect.

[0037] As the specific design structure of the movable striking plate in this embodiment, the movable striking plate includes a bottom plate 107 and a top plate 108. A plurality of striking rods 109 are radially arranged on the bottom plate 107 and the top plate 108. The bottom plate is rotatably arranged on the dryer cylinder through a rotating shaft, and the two ends of the arc-shaped scraper 110 are respectively welded to the bottom plate 107 and the top plate 108. The combined lifting plate in this equipment utilizes the movable striking plate in the original drying process. On the basis of the original, an arc-shaped lifting plate is installed on the back so that it forms a tangential relationship with the dryer cylinder. Since the material picked up by the lifting lifting plate moves freely, the material that should have violently hit the cylinder wall under the action of acceleration now falls directly into the combined lifting plate. Since the front half of the combined lifting plate is a movable striking plate, all the material will fall into the curved lifting plate matched with it. When the cylinder rotates to the upper end, the movable striking plate is affected by gravity and collides with the adjacent lifting lifting plate, thereby vibrating all the material that has fallen into the curved lifting plate and dropping it to the bottom to continue the process. A support member 104 is also designed between the inner cylinder lifting plate unit and the movable striking plate. The support member 104 is U-shaped, and the two ends of the support member 104 extend upward to the position between the free end of the inner cylinder lifting plate unit and the movable striking plate. The design of the support member between the inner cylinder lifting plate unit and the movable striking plate enhances the structural stability of the equipment. This design can not only effectively prevent the material from leaking from the equipment during the drying process, but also reduce the vibration and noise of the equipment during operation; the movable lifting plate assembly and the inner drum lifting plate assembly are evenly arranged in a spiral manner on the inner wall of the dryer cylinder; the movable lifting plate assembly and the inner drum lifting plate assembly are arranged in multiple rows around the axis to ensure the density of the movable lifting plate assembly and the inner drum lifting plate assembly, thereby ensuring the drying effect.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A twin-drum dryer with a combined inner drum and material lifting plate, comprising a frame, an inner drum and an outer drum coaxially mounted and rotatably mounted on the frame, the inner and outer drum chambers being interconnected and material flow directions being opposite, a feed port communicating with the inner drum chamber being disposed on the frame, and a discharge port communicating with the outer drum being disposed on the frame, characterized in that: A combined copying plate is provided on the inner side wall of the inner cylinder, and the combined copying plate includes a plurality of movable copying plate units and an inner cylinder lifting plate unit uniformly distributed around the axis along the inner wall of the inner cylinder, the movable copying plate units and the inner cylinder lifting plate units are spaced apart, and the inner cylinder lifting plate unit is V-shaped, the movable copying plate unit includes a movable striking plate, one end of the inner side of the movable copying plate unit is hinged, an arc-shaped copying plate is provided on the side of the movable striking plate away from the inner cylinder lifting plate unit, a leakage gap is provided on the movable striking plate, and the arc-shaped copying plate is bent inwardly toward the side of the movable striking plate; the inner side wall of the outer cylinder is also uniformly provided with an outer cylinder lifting plate around the axis, and a suspension chain is provided on the back of the outer cylinder lifting plate.

2. A double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: A spiral feeding plate is provided on the inner cylinder at a position corresponding to the feeding port.

3. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: The end of the outer cylinder lifting plate is provided with a bent portion, and the back of the outer cylinder lifting plate is provided with a supporting rib.

4. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: The inner drum lifting plate unit includes a plate body, an end of the plate body is provided with a first bending portion, the plate body is arranged radially along the dryer drum, and the first bending portion is bent toward the movable striking plate.

5. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: The movable copying plate unit and the inner cylinder lifting plate unit are evenly arranged on the inner wall of the inner cylinder in a spiral manner, and the outer cylinder lifting plates are evenly arranged on the inner wall of the outer cylinder in a spiral manner.

6. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: The movable striking plate includes a bottom plate and a top plate, a plurality of striking rods are arranged radially on the bottom plate and the top plate, the bottom plate is rotatably arranged on the dryer cylinder through a rotating shaft, and the two ends of the arc-shaped lifting plate are respectively arranged on the bottom plate and the top plate.

7. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: A support roller group is symmetrically arranged on the frame at a position corresponding to the lower part of the outer cylinder, a gear ring is circumferentially arranged on the outer side wall of the outer cylinder, and a driving gear for driving the outer cylinder to rotate is arranged on the frame. The driving gear is connected to a driving source and meshes with the gear ring.

8. The double-drum dryer with a combined inner drum lifting plate according to claim 1, characterized in that: A supporting member is further provided between the inner cylinder material lifting plate unit and the movable striking plate. The supporting member is U-shaped, and both ends of the supporting member extend upward to a position between the free end of the inner cylinder material lifting plate unit and the movable striking plate.

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