Double-cone rotary vacuum dryer

Abstract

The utility model belongs to the technical field of drying machines, and particularly relates to a double-cone rotary vacuum drying machine which comprises a drying tank, a lifting feeding structure used for lifting up and down to facilitate material receiving is arranged on a feeding port in the top of the drying tank, a cutting and smashing assembly used for cutting and smashing materials is arranged in the drying tank, and the cutting and smashing assembly comprises a smashing rod and a smashing cutter. The smashing cutters are distributed and arranged on the smashing rod, the smashing rod is arranged on the drying tank, and one end of the smashing rod penetrates out of the drying tank and is in driving connection with a stepping motor. The electric telescopic rod drives the material receiving sleeve to be connected with the adding hopper in a sleeved mode so that materials can directly enter the drying tank along the material receiving sleeve, and the problem that the materials are prone to falling on the outer side of the feeding port to cause waste is solved. The drying machine is started, steam is introduced into the drying tank through the steam introduction pipe for heating, the stepping motor drives the crushing rod to drive the crushing cutter to cut and crush materials with large particle sizes and caked materials in the tank, and the materials are dried more uniformly; and the drying speed is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of dryers, and in particular relates to a double-cone rotary vacuum dryer. Background Art

[0002] A dryer is a mechanical device that uses heat to reduce the moisture content of materials, typically water or other volatile liquid components, and is used for drying. The dryer heats the material, vaporizing it to remove moisture, typically water or other volatile liquid components, to obtain a solid material with a specified moisture content. The purpose of drying is to prepare the material for use or further processing. A double-cone dryer is a double-cone rotating tank under vacuum. Steam or hot water is introduced into the drying tank to heat the material, allowing the heat to pass through the inner wall of the tank and contact the wet material.

[0003] After searching, Chinese patent publication number CN220062392U discloses a double-cone rotary vacuum dryer with a three-head vacuum hood structure, including a dryer body, a frame supporting the dryer body, and a reduction motor arranged on the frame to brake the dryer body. The reduction motor is connected to the brake disc at the right end of the dryer body through a transmission belt; the three vacuum hoods are connected to the vacuum system through a fixed seat connected to the vacuum pipe, so that the three vacuum hoods can generate a vacuum force on the interior of the dryer body, thereby improving the efficiency of vacuuming the air inside the dryer body and improving the efficiency of drying the material.

[0004] 1. The above-mentioned double-cone rotary vacuum dryer has the defect of being unable to cut materials. Since some materials have large particle sizes, the internal moisture is difficult to be extracted; at the same time, the materials are prone to agglomeration, which can easily lead to uneven drying in the dryer and reduce the drying speed.

[0005] 2. When adding materials through the feed port during the feeding process of the dryer, since the adding hopper and the feed port do not contact each other, the materials are likely to fall outside the feed port, resulting in material waste.

[0006] Therefore a double cone rotary vacuum dryer is proposed to solve the above-mentioned problems. Utility Model Content

[0007] To solve the problems raised in the above background technology. The utility model provides a double-cone rotary vacuum dryer. The electric telescopic rod drives the material receiving sleeve to connect the adding hopper so that the material can directly enter the drying tank along the material receiving sleeve, solving the problem that the material easily falls outside the feed port and causes waste. When the dryer is turned on, steam is introduced into the drying tank through the steam inlet pipe for heating. The stepper motor drives the crushing rod to drive the crushing knife to cut and crush the larger particle size and agglomerated materials in the tank, making the material drying more uniform and improving the drying speed.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-cone rotary vacuum dryer, comprising a drying tank, a feed port being provided at the top of the drying tank, a discharge port being provided at the bottom of the drying tank, a lifting feed structure being provided on the feed port at the top of the drying tank for lifting up and down to facilitate material collection, a cutting and crushing assembly being provided inside the drying tank for cutting and crushing materials, the cutting and crushing assembly comprising a crushing rod and crushing knives, the crushing knives being distributed and arranged on the crushing rod, the crushing rod being provided on the drying tank, and one end of the crushing rod passing through the drying tank and being driven and connected to a stepping motor, a liquid outlet cavity being provided at the bottom of the drying tank near the discharge port, and a drain pipe connected to the liquid outlet cavity being provided at the bottom of the drying tank.

[0009] As a preferred solution of the double-cone rotary vacuum dryer of the present invention, the lifting and feeding structure includes an electric telescopic rod, and the driving end of the electric telescopic rod is connected to a telescopic material receiving sleeve through a connecting piece.

[0010] As a preferred solution of the double-cone rotary vacuum dryer of the utility model, two crushing rods are provided, one crushing rod extends upward from the bottom of the drying tank to the upper part thereof, and the other crushing rod extends downward from the top of the drying tank to the lower part thereof.

[0011] As a preferred solution of a double-cone rotary vacuum dryer of the utility model, the drying tank is installed on a fixed frame through a rotating shaft via a bearing seat, a driving motor is installed on the fixed frame, a driving shaft end of the driving motor is connected to the rotating shaft through a driving wheel via a transmission belt, and the fixed frame is installed on the machine base.

[0012] As a preferred solution of the double-cone rotary vacuum dryer of the utility model, a liquid outlet valve is provided on the liquid discharge pipe.

[0013] As a preferred solution of the double-cone rotary vacuum dryer of the utility model, a butterfly valve is provided on the discharge port.

[0014] As a preferred solution of a double-cone rotary vacuum dryer of the utility model, a steam inlet pipe for introducing steam into the drying tank is provided on one side of the rotating shaft, a condensate return pipe for recovering liquid is provided below one side of the rotating shaft; and a vacuum suction pipe for sucking out air from the drying tank is provided on the other side of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When adding materials, the utility model drives the material receiving sleeve to rise and sleeve the lower end of the adding hopper when the electric telescopic rod drives the material receiving sleeve to rise, so that the material directly enters the drying tank along the material receiving sleeve, which solves the problem that the adding hopper and the feeding port do not contact each other, and the material is easy to fall outside the feeding port, causing material waste.

[0017] After the material enters the drying tank, the dryer is turned on and steam is introduced into the drying tank through the steam inlet pipe for heating. The heat contacts the wet material through the inner wall of the tank. At the same time, the stepper motor is started to drive the crushing rod to drive the crushing knife to cut and crush the material with larger particle size and agglomerated material in the tank, making the material drying more uniform and improving the drying speed. The vacuum state of the tank body causes the material to be continuously turned up and down, inside and outside during the rotation process, which effectively solves the problem of material agglomeration while turning, speeds up the material drying speed, and achieves the purpose of uniform drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a double-cone rotary vacuum dryer of the utility model;

[0020] Figure 2 This is a front view structural diagram of a double-cone rotary vacuum dryer of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of a double-cone rotary vacuum dryer of the utility model;

[0022] Figure 4 This is a schematic diagram of the longitudinal cross-section of a double-cone rotary vacuum dryer of the present invention;

[0023] Figure 5 This is a structural schematic diagram of a lifting and feeding structure in a double-cone rotary vacuum dryer of the utility model.

[0024] Description of Figure Numbers:

[0025] 1. Machine base; 2. Fixed frame;

[0026] 3. Drying tank; 31. Feed port; 32. Discharge port; 33. Butterfly valve; 34. Liquid outlet cavity;

[0027] 4. Drive motor; 41. Drive wheel; 42. Drive belt;

[0028] 5. Rotating shaft;

[0029] 6. Steam inlet pipe; 61. Condensate return pipe;

[0030] 7. Lifting feeding structure; 71. Electric telescopic rod; 72. Material connection sleeve; 73. Connecting parts;

[0031] 8. Cutting and crushing assembly; 81. Crushing rod; 82. Crushing knife; 83. Stepping motor;

[0032] 9. Drainage pipe;

[0033] 10. Vacuum suction pipe. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0035] See also Figure 1-5 The utility model provides the following technical solutions: a double-cone rotary vacuum dryer, comprising a drying tank 3, a feed port 31 being provided on the top of the drying tank 3, a discharge port 32 being provided at the bottom of the drying tank 3, a lifting feed structure 7 being provided on the feed port 31 at the top of the drying tank 3 for lifting up and down to facilitate receiving materials, a cutting and crushing assembly 8 being provided inside the drying tank 3 for cutting and crushing materials, the cutting and crushing assembly 8 comprising a crushing rod 81 and a crushing knife 82, the crushing knife 82 being distributed and arranged on the crushing rod 81, the crushing rod 81 being provided on the drying tank 3, and one end of the crushing rod passing through the drying tank 3 and being driven by a stepping motor 83, a liquid outlet cavity 34 being provided at the bottom of the drying tank 3 near the discharge port 32, and a liquid outlet cavity 34 being provided at the bottom of the drying tank 3 The inner cavity 34 is connected to the drain pipe 9; a filter screen is provided on the liquid outlet inner cavity 34; in this embodiment, after the material enters the drying tank 3, the dryer is turned on, and steam is introduced into the drying tank 3 through the steam inlet pipe 6 for heating. The heat contacts the wet material through the inner wall of the tank, and at the same time, the stepper motor 83 is started to drive the crushing rod 81 to drive the crushing knife 82 to cut and crush the material with larger particle size and agglomerated material in the tank, so that the material is dried more evenly and the drying speed is improved; the tank body in a vacuum state is used to make the material constantly flip up and down, inside and outside during the rotation process, which effectively solves the problem of material agglomeration while flipping, accelerates the drying speed of the material, improves the drying efficiency, and achieves the purpose of uniform drying.

[0036] The water vapor evaporated from the wet material after absorbing heat can be discharged through the vacuum suction pipe 10, and the solvent in the material can be effectively recovered through the condensed water return pipe 61. The water in the material and the generated steam are centrifuged in the drying tank 3 and discharged from the liquid outlet cavity through the drain pipe 9.

[0037] In this embodiment, the lifting feeding structure 7 includes an electric telescopic rod 71, and the driving end of the electric telescopic rod 71 is connected to a telescopic material receiving sleeve 72 through a connecting piece 73; when adding materials, the electric telescopic rod 71 is started to drive the material receiving sleeve 72 to rise and sleeve the lower end of the adding hopper, so that the material enters the drying tank 3 directly along the material receiving sleeve 72, which solves the problem that the adding hopper and the feeding port do not contact each other, and the material is easy to fall outside the feeding port, causing material waste.

[0038] In this embodiment, two crushing rods 81 are provided, one crushing rod 81 extends upward from the bottom of the drying tank 3 to the upper part thereof, and the other crushing rod 81 extends downward from the top of the drying tank 3 to the lower part thereof.

[0039] In this embodiment, the drying tank 3 is mounted on the fixed frame 2 via the rotating shaft 5 through the bearing seat 21. The fixed frame 2 is mounted with a drive motor 4. The drive shaft end of the drive motor 4 is connected to the rotating shaft 5 via a drive belt 42 through a drive wheel 41. The fixed frame 2 is mounted on the machine base 1.

[0040] In this embodiment, a liquid outlet valve is provided on the liquid discharge pipe 9 .

[0041] In this embodiment, a butterfly valve 33 is provided on the discharge port 32 .

[0042] In this embodiment, a steam inlet pipe 6 for introducing steam into the drying tank 3 is provided on one side of the rotating shaft 5, and a condensate return pipe 61 for recovering liquid is provided below one side of the rotating shaft 5; a vacuum suction pipe 10 for sucking out air from the drying tank 3 is provided on the other side of the rotating shaft 5.

[0043] The working principle and use process of the utility model: When the utility model is in use, when the staff adds materials, they start the electric telescopic rod 71 to drive the material receiving sleeve 72 to rise and sleeve the lower end of the adding hopper, so that the material directly enters the drying tank 3 along the material receiving sleeve 72, which solves the problem that the adding hopper and the feeding port do not contact each other, and the material is easy to fall outside the feeding port, causing material waste.

[0044] After the material enters the drying tank 3, the dryer is turned on and steam is introduced into the drying tank 3 through the steam inlet pipe 6 for heating. The heat contacts the wet material through the inner wall of the tank. At the same time, the stepper motor 83 is started to drive the crushing rod 81 to drive the crushing knife 82 to cut and crush the material with larger particle size and agglomerated material in the tank, so that the material is dried more evenly and the drying speed is improved. The vacuum state of the tank body causes the material to be continuously turned up and down and inside and outside during the rotation process, which effectively solves the problem of material agglomeration while turning, accelerates the drying speed of the material, improves the drying efficiency, and achieves the purpose of uniform drying.

[0045] The water vapor evaporated from the wet material after absorbing heat can be discharged through the vacuum suction pipe 10, and the solvent in the material can be effectively recovered through the condensed water return pipe 61. The water in the material and the generated steam are centrifuged in the drying tank 3 and discharged from the liquid outlet cavity through the drain pipe 9.

[0046] Finally, it should be noted that the above description is merely 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 will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A double cone rotary vacuum dryer, comprising a drying tank (3), wherein a feed inlet (31) is provided at the top of the drying tank (3), and a discharge outlet (32) is provided at the bottom of the drying tank (3), characterized in that: A lifting feed structure (7) for lifting up and down to facilitate material receiving is provided on the feed port (31) at the top of the drying tank (3). A cutting and crushing assembly (8) for cutting and crushing materials is provided inside the drying tank (3). The cutting and crushing assembly (8) includes a crushing rod (81) and a crushing knife (82). The crushing knife (82) is arranged on the crushing rod (81) in a distributed manner. The crushing rod (81) is arranged on the drying tank (3) and one end of the crushing rod passes through the drying tank (3) and is driven and connected to a stepping motor (83). A liquid outlet cavity (34) is provided at the bottom of the drying tank (3) near the discharge port (32). A liquid discharge pipe (9) connected to the liquid outlet cavity (34) is provided at the bottom of the drying tank (3).

2. The double cone rotary vacuum dryer according to claim 1, characterized in that: The lifting and feeding structure (7) comprises an electric telescopic rod (71), and a driving end of the electric telescopic rod (71) is connected to a telescopic material receiving sleeve (72) via a connecting piece (73).

3. The double cone rotary vacuum dryer according to claim 1, characterized in that: Two crushing rods (81) are provided, one crushing rod (81) extending upward from the bottom of the drying tank (3) to the upper part of the interior thereof, and the other crushing rod (81) extending downward from the top of the drying tank (3) to the lower part of the interior thereof.

4. The double-cone rotary vacuum dryer according to claim 1, characterized in that: The drying tank (3) is mounted on a fixed frame (2) via a rotating shaft (5) through a bearing seat (21); a driving motor (4) is mounted on the fixed frame (2); a driving shaft end of the driving motor (4) is drivingly connected to the rotating shaft (5) via a driving wheel (41) through a transmission belt (42); and the fixed frame (2) is mounted on a machine base (1).

5. The double cone rotary vacuum dryer according to claim 1, characterized in that: The liquid discharge pipe (9) is provided with a liquid outlet valve.

6. The double-cone rotary vacuum dryer according to claim 1, characterized in that: The discharge port (32) is provided with a butterfly valve (33).

7. The double-cone rotary vacuum dryer according to claim 4, characterized in that: A steam inlet pipe (6) for introducing steam into the drying tank (3) is provided on one side of the rotating shaft (5), and a condensed water return pipe (61) for recovering liquid is provided below one side of the rotating shaft (5); and a vacuum suction pipe (10) for sucking out air from the drying tank (3) is provided on the other side of the rotating shaft (5).

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