Disc dryer

Abstract

A disc dryer comprises a large drying disc and a small drying disc which are connected with a rotating shaft, the large drying disc and the small drying disc are arranged in a staggered mode, a rake rod is arranged between the large drying disc and the small drying disc, the rake rod is connected with the rotating shaft, and the rake rod is further connected with a scraper assembly. The scraper assembly comprises a limiting baffle, a scraper, a first connecting piece and a second connecting piece. The limiting baffle is connected with the rake rod through a first connecting piece, and the limiting baffle is arranged close to the disc bottom of the large drying disc or the small drying disc above the limiting baffle; the scraper is connected with the rake rod through a second connecting piece, and the scraper is arranged close to the disc surface of the drying large disc or the drying small disc below the scraper. The utility model has the advantages of simple process, convenience in processing, easiness in assembly, and effective corrosion resistance and compression resistance. According to the utility model, wet materials can be well prevented from caking and blocking on the disc surface of the drying disc, and the phenomena of deformation of the rake rod and the like caused by excessive accumulated materials can be reduced.

Description

Technical Field

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

[0002] Disc dryers are usually used for drying wet materials and slurries. They are three-dimensional drying equipment including multiple layers of fixed hollow heating discs and rotating stirring rakes. The heat source of the disc dryer includes steam, heat transfer oil, hot water, etc. For example, Chinese patent application number 202223595934.3 discloses a disc dryer, which includes a cylinder, a plurality of small drying discs and a large drying disc are arranged in the cylinder, the small drying discs and the large drying discs are arranged alternately, a small disc scraper is arranged on the small drying disc, the small disc scraper is used to scrape off the material on the small drying disc, a large disc scraper is arranged on the large drying disc, the large disc scraper is used to scrape off the material on the large drying disc, and a feed hopper is arranged on the top of the cylinder. When this disc dryer is working, the rake rod drives the small disc scraper and the large disc scraper to rotate, and the small disc scraper scrapes the material on the small drying disc to the large drying disc, and the large disc scraper scrapes the material on the large drying disc to the small drying disc of the next layer, scraping layer by layer to achieve layer-by-layer drying of the material. During the scraping process, the surface material is mixed with the middle material, so that the material is dried more evenly, which is conducive to reducing the solvent residue in the middle material and not easy to make the surface material over-dried. However, the problem with this disc dryer is that for wet materials with high moisture content or ultra-fine wet materials, it is easy to agglomerate or block the top disc or rake rod during the drying process. Agglomeration is easy to cause incomplete drying of materials, and the residual materials are also easy to affect the output quality of materials. In addition, too much accumulated material is easy to cause deformation of the climbing rod, which affects the service life of the equipment. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a disc dryer to solve the shortcomings of the above-mentioned background technology.

[0004] The technical problem solved by the utility model is achieved by the following technical solutions:

[0005] A disc dryer comprises a large drying disc and a small drying disc connected to a rotating shaft, the large drying disc and the small drying disc are arranged alternately, a rake rod is arranged between the large drying disc and the small drying disc, the rake rod is connected to the rotating shaft, and the rake rod is also connected to a scraper assembly; the scraper assembly comprises a limit baffle, a scraper, a first connecting member and a second connecting member; the limit baffle is connected to the rake rod through the first connecting member, and the limit baffle is arranged close to the bottom of the large drying disc or the small drying disc above; the scraper is connected to the rake rod through the second connecting member, and the scraper is arranged close to the surface of the large drying disc or the small drying disc below.

[0006] In the utility model, the limit baffle is fixedly connected to the rake rod through a first connecting member, and the scraper is fixedly connected to the rake rod through a second connecting member.

[0007] In the utility model, the limit baffle is arranged along the length direction of the rake rod, and an angle is formed between the scraper and the rake rod.

[0008] In the utility model, the first connecting member comprises a mounting ring, the mounting ring is fixedly connected to the limit baffle, and a fixing screw is arranged on the mounting ring.

[0009] In the utility model, the second connecting member comprises two mounting side plates which are oppositely arranged and arranged vertically, mounting holes are provided on the mounting side plates, one ends of the two connecting side plates are connected by a connecting plate, and the bottom of the connecting plate is connected to the scraper.

[0010] In the utility model, the first connecting member is arranged between the two side plates, and the width of the limit baffle is smaller than the distance between the two side plates.

[0011] In the utility model, a counterweight is arranged between the scraper and the second connecting member, and the counterweight is detachably fixedly connected to the scraper.

[0012] In the utility model, the counterweight component comprises two counterweight plates arranged in parallel, and the scraper is arranged between the two counterweight plates and fixed by a bolt assembly.

[0013] In the utility model, protective rings are arranged at the connection places between the rake rod and the first connecting member and the second connecting member.

[0014] Beneficial effects: The disc dryer described in the utility model can effectively prevent wet materials from agglomerating and blocking on the surface of the drying disc, thereby reducing the occurrence of incomplete material drying, ensuring the stability of product drying, and reducing the occurrence of rake deformation caused by excessive material accumulation.

[0015] The disc dryer of the utility model can reduce the wear of the scraper during long-term use, and the scraper can be flexibly replaced, which is convenient and quick.

[0016] The disc dryer of the utility model can reduce the shaking of the scraper during use, and the scraping material is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the scraper assembly in a preferred embodiment of the utility model.

[0019] Among them: 1. small drying plate; 2. large drying plate; 3. rotating shaft; 4. rake rod; 5. scraper assembly; 51. limit baffle; 52. second connecting piece; 53. reinforcing rib; 54. scraper; 55. counterweight plate; 56. first connecting piece; 57. connecting plate; 6. protective ring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0021] See also Figure 1 and Figure 2 As shown. A preferred embodiment of a disc dryer, the disc dryer comprises a vertically arranged rotating shaft 3, a large drying disc 2 and a small drying disc 1 connected to the rotating shaft 3 and arranged horizontally. The large drying disc 2 and the small drying disc 1 are arranged alternately, and a rake rod 4 is arranged between the large drying disc 2 and the small drying disc 1. The rake rod 4 is arranged parallel to the large drying disc 2 and the small drying disc 1, and the rake rod 4 is connected to the rotating shaft 3 and rotates with the rotating shaft 3. The rake rod 4 is also connected to a plurality of scraper assemblies 5 arranged at intervals.

[0022] The scraper assembly 5 includes a limiting baffle 51 , a scraper 54 , a first connecting member 56 and a second connecting member 52 .

[0023] like Figure 1 and Figure 2 As shown, the limit baffle 51 is protruding from the rake rod 4. The limit baffle 51 is arranged close to the bottom of the upper drying plate 2 or the upper drying plate 1. Preferably, the distance between the limit baffle 51 and the bottom of the upper drying plate 2 or the upper drying plate 1 is 2 to 3 mm. For materials with high humidity that are not easy to disperse or sticky materials, they can be forcibly scraped to avoid material accumulation above the plate surface. The limit baffle 51 is fixedly connected to the rake rod 4 through a first connecting member 56. The limit baffle 51 is arranged along the length direction of the rake rod 4. The limit baffle 51 is a scraper structure. The limit baffle 51 can be perpendicular to the horizontal direction. In other preferred embodiments, the upper hanging knife can also be tilted and have a certain inclination angle to the horizontal plane. Figure 2 As shown, the first connecting member 56 includes a mounting ring, which is adapted to the rake rod 4. A fixing screw is provided on the mounting ring. The rake rod 4 is fixed by the fixing screw after passing through the mounting ring. The mounting ring is fixedly connected to the limit baffle 51. The fixed connection method is fixed connection through a mounting plate or welding or integral molding.

[0024] The scraper 54 is fixedly connected to the rake rod 4 through a second connecting member 52. The scraper 54 is arranged close to the surface of the large drying plate 2 or the small drying plate 1 below. The distance between the scraper 54 and the surface of the large drying plate 2 or the small drying plate 1 below is 2 to 3 mm. Since the rake rod has a slight up and down swing during rotation, the setting of this distance can well complete the scraping while reducing the wear of the scraper and improving the durability. In some preferred embodiments, there is an angle between the scraper 54 and the rake rod 4, and the angle between the scraper 54 and the connected rake rod 4 above the same large drying plate 2 or small drying plate 1 is the same, and the limit baffle 51 is in the same direction as the rake rod 4, so that the material on the large drying plate 2 or small drying plate 1 is pushed from different angles, and the pushing is more thorough. Figure 2 As shown, the second connecting member 52 includes two mounting side plates that are oppositely arranged and arranged vertically, and mounting holes are provided on the mounting side plates, and the mounting holes allow the rake rod 4 to pass through. One end of the two connecting side plates is connected by a connecting plate 57 and further fixed by a reinforcing plate, and the bottom of the connecting plate 57 is connected to the scraper 54. A counterweight is arranged between the scraper 54 and the second connecting member 52, and the counterweight is detachably fixedly connected to the scraper 54. In a specific embodiment, the counterweight includes two counterweight plates 55 arranged in parallel, and the scraper 54 is arranged between the two counterweight plates 55 and fixed by a bolt assembly, so that in the actual process, the setting of the counterweight can prevent the scraper assembly 5 from being too light to push the material, thereby causing the rake rod 4 to deform.

[0025] In some embodiments, Figure 2 The first connecting member 56 is disposed between the two side plates, the width of the limit baffle 51 is smaller than the distance between the two side plates, and both ends of the first connecting member 56 are fixedly connected to the two side plates.

[0026] In order to prevent metal debris from entering the material due to wear between the first connecting piece 56 or the second connecting piece 52 and the rake rod 4 during long-term use, a protective ring 6 is provided at the connection between the rake rod 4 and the first connecting piece 56 and the second connecting piece 52, and the protective ring 6 is preferably a polytetrafluoroethylene sleeve.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it 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 an indirect connection through an intermediate medium, or it can be the internal connection of two elements.

[0030] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A disc dryer, characterized in that: It comprises a large drying plate and a small drying plate connected to a rotating shaft, the large drying plate and the small drying plate are arranged alternately, a rake rod is arranged between the large drying plate and the small drying plate, the rake rod is connected to the rotating shaft, and the rake rod is also connected to a scraper assembly; the scraper assembly comprises a limit baffle, a scraper, a first connecting member and a second connecting member; the limit baffle is connected to the rake rod through the first connecting member, and the limit baffle is arranged close to the bottom of the upper large drying plate or the small drying plate; the scraper is connected to the rake rod through the second connecting member, and the scraper is arranged close to the surface of the lower large drying plate or the small drying plate.

2. The disc dryer according to claim 1, characterized in that: The limit baffle is fixedly connected to the rake rod via a first connecting member, and the scraper is fixedly connected to the rake rod via a second connecting member.

3. The disc dryer according to claim 1, characterized in that: The limit baffle is arranged along the length direction of the rake rod, and an angle is formed between the scraper and the rake rod.

4. The disc dryer according to claim 1, characterized in that: The first connecting member comprises a mounting ring, the mounting ring is fixedly connected to the limit baffle, and a set screw is arranged on the mounting ring.

5. The disc dryer according to claim 4, characterized in that: The second connecting member includes two mounting side plates which are oppositely disposed and arranged vertically, and mounting holes are provided on the mounting side plates. One ends of the two connecting side plates are connected by a connecting plate, and the bottom of the connecting plate is connected to the scraper.

6. The disc dryer according to claim 5, characterized in that: The first connecting member is arranged between the two side plates, and the width of the limit baffle is smaller than the distance between the two side plates.

7. The disc dryer according to claim 1, characterized in that: A counterweight is arranged between the scraper and the second connecting member, and the counterweight is detachably fixedly connected to the scraper.

8. The disc dryer according to claim 7, characterized in that: The counterweight member comprises two counterweight plates arranged in parallel, and the scraper is arranged between the two counterweight plates and fixed by a bolt assembly.

9. The disc dryer according to claim 7, characterized in that: Protective rings are provided at the connection points between the rake rod and the first connecting member and the second connecting member.

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