CN210051064U - Single-cone vacuum dryer - Google Patents

Abstract

The utility model discloses a single-cone vacuum dryer, which belongs to the technical field of mechanical equipment. The shaft and the spiral belt are fixedly connected through the support rod, the spiral belt is wound in a single helix around the outer circumference of the main stirring shaft, and the gas interface is connected with the gas flushing pipeline through the pipeline. The gas flushing pipeline is fixed on the inner wall of the main body and spirals longitudinally around the inner wall of the main body. The air blowing pipe is provided with air holes; the inner upper end of the main body is also provided with a high-pressure nozzle. The utility model can ensure that the materials are fully mixed and dried, and all the materials can be collected through the discharge port, thereby reducing the residue of the materials in the dryer; the utility model can also make the dryer be fully cleaned after use, ensuring The batches of materials are not affected, and the service life of the dryer is improved at the same time.

Description

A single cone vacuum dryer

technical field

The utility model relates to a drying hot standby, in particular to a vacuum dryer, which belongs to the technical field of mechanical equipment.

Background technique

Single cone vacuum dryer is suitable for medicine, chemical industry, food, metallurgical building materials and other industries. It is used for mixing and drying of powder, crystalline, granular and other materials. It is also suitable for concentration of solution, disinfection and sterilization of materials. When drying materials, the single-cone vacuum dryer places the object to be dried in a vacuum state, and indirectly heats the material through the heating medium jacketed in the drying container (body) to achieve the purpose of drying the material; during the drying process, the spiral belt rotates slowly and is continuously turned to be dried. The material renews the drying surface, accelerates the evaporation of the liquid contained in the material to be dried, and continuously sucks out the container through the vacuum pump. If the liquid needs to be recovered, a recovery device can be added for recovery; The entire heat transfer area in the container to improve drying efficiency.

However, in the existing single-cone vacuum dryer, some materials are easily adhered to the inner wall of the dryer body, the spiral belt, and the stirring spindle during the material mixing process, resulting in uneven mixing, and cannot be completely discharged from the dryer after mixing. The yield is low; and the material cannot be completely discharged out of the dryer, which will affect the mixing of the next batch of materials, and will reduce the service life of the dryer. The existing single-cone vacuum dryer also has the problem of material adhesion during the material drying process, thereby reducing the drying degree of the material, reducing the material yield, and reducing the service life of the dryer.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to provide a single-cone vacuum dryer, which can improve the mixing uniformity of materials, reduce the residues of materials in the dryer, and prolong the service life of the dryer.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A single-cone vacuum dryer includes a hollow body, the body includes a conical lower part and an upper cover that is sealed and covered with an upper port of the conical lower part; The outer periphery is provided with a thermal insulation layer; the inside of the main body is longitudinally provided with a main stirring shaft, one end of the main stirring shaft passes through the upper cover and is rotatably connected to the reducer arranged on the upper cover, the reducer is electrically connected with the motor, and the main stirring shaft extends to reduce the speed One end of the machine is provided with a rotary joint; the main stirring shaft inside the main body is fixedly connected with the spiral belt through the support rod, and the spiral belt is wound in a single spiral around the outer circumference of the main stirring shaft; the lower end of the main body is fixedly connected with the butterfly valve, and the lower end side of the conical lower part of the main body is There is also a gas interface and a heat medium inlet 2 that communicates with the jacket. The upper side of the body is also provided with a heat medium outlet and a heat medium outlet that communicate with the jacket, and the upper end face of the upper cover is also provided with a manhole that communicates with the inside of the body. And the dust collector, the end of the dust collector away from the main body is the vacuuming port, the gas interface is connected with the gas flushing pipeline through the pipeline, the gas flushing pipeline is fixed on the inner wall of the main body and longitudinally spirally arranged around the inner wall of the main body, and the gas flushing pipeline is provided with There are air holes; the inner upper end of the body is also provided with a high-pressure nozzle that can pass high-pressure gas or high-pressure liquid.

A further improvement of the technical solution of the utility model is that the butterfly valve is a pneumatic butterfly valve.

A further improvement of the technical solution of the utility model is that the thermal insulation layer is a foam thermal insulation layer.

A further improvement of the technical solution of the present invention is that: the number of the air rushing pipes is one.

A further improvement of the technical solution of the present invention is that the opening direction of the air hole is vertical and/or parallel to the inner wall of the main body.

A further improvement of the technical solution of the utility model is that a bracket is also provided on the side of the main body.

A further improvement of the technical solution of the present invention is that the main stirring shaft is composed of 2-3 sections of auxiliary stirring shafts which are detachably connected, and each section of the auxiliary stirring shaft is fixedly connected to a section of the spiral belt longitudinally arranged around the auxiliary stirring shaft respectively through a support rod.

A further improvement of the technical solution of the utility model is that a blade is fixed on the outer edge of the spiral belt.

Owing to having adopted the above-mentioned technical scheme, the technological progress that the utility model obtains is:

The single-cone vacuum dryer of the utility model can improve the mixing degree of materials, make the materials heated evenly, and the dehydration degree of each part is consistent, so as to ensure that the materials are fully mixed and dried; Collected, the residue of materials in the dryer is reduced, and the yield of materials is improved; the utility model can also make the dryer fully clean after the use of the dryer, ensure that the materials in each batch are not affected, and at the same time improve the drying rate the service life of the machine.

The main body of the utility model is provided with a blowing pipe, and the blowing pipe is provided with air holes. The longitudinal spiral design of the blowing pipe and the opening direction of the blowing hole are designed so that nitrogen, oxygen or air can be passed through the air hole on the blowing pipe through the gas joint. Filling into the body can not only fully fill the gas, but also improve the mixing effect, and also prevent the material from adhering to the inner wall of the body, the stirring shaft and the ribbon, which can improve the yield of the material and ensure that each batch of Materials in between are not affected.

The upper end of the main body of the utility model is provided with a high-pressure spray head, which can spray high-pressure gas or high-pressure liquid to improve the mixing effect, and can also effectively clean the inside of the main body, prevent the mutual influence of materials between batches, and also Extend the life of the dryer.

When the main stirring shaft of the utility model is composed of several sections of auxiliary stirring shafts which are detachably connected, the maintenance or replacement of the main stirring shaft is convenient, and the whole stirring shaft must be replaced when a problem occurs in the stirring shaft or a part of the spiral belt, and the production and maintenance costs are reduced; A blade is set on the outer edge of the ribbon, and the material can be cut during the rotation of the stirring shaft to prevent the material from sticking, so as to ensure the uniformity of mixing and drying and heating, and also ensure that the finished product is in a powder state.

Description of drawings

Fig. 1 is the structural representation of the single-cone vacuum dryer of the present utility model;

Figure 2 is a schematic diagram of the internal structure of the single-cone vacuum dryer part of the present utility model;

3 is a schematic diagram of the internal structure of the single-cone vacuum dryer part of the present invention;

Among them, 1- body, 2- upper cover, 3- jacket, 4- thermal insulation layer, 5- bracket, 6- motor, 7- reducer, 8- rotary joint, 9- manhole, 10- main stirring shaft, 11-support rod, 12-ribbon, 13-heat medium inlet one, 14-heat medium outlet, 15-heat medium inlet two, 16-gas interface, 17-butterfly valve, 18-vacuum outlet, 19-dust collector, 20- high pressure nozzle, 21- air blowing pipe, 22- air hole.

Detailed ways

Below in conjunction with embodiment, the utility model is described in further detail:

A single-cone vacuum dryer, as shown in Figures 1 and 2, includes a hollow body 1, the body 1 includes a conical lower part and an upper cover 2 sealed with the upper port of the conical lower part; the outer circumference of the body 1 There is a jacket 3 through which the heating medium passes, and the outer periphery of the jacket 3 is provided with a thermal insulation layer 4. The thermal insulation layer 4 can be any material that can play a thermal insulation effect such as a foam thermal insulation layer. Stirring shaft 10, one end of the main stirring shaft 10 passes through the upper cover 2 and is rotatably connected with the reducer 7 arranged on the upper cover 2, the reducer is electrically connected with the motor 6, and one end of the main stirring shaft 10 extending out of the reducer 7 is set to rotate Joint 8; the main stirring shaft 10 inside the main body 1 and the ribbon 12 are fixedly connected through the support rod 11, and the ribbon 12 is wound in a single helix around the outer periphery of the main stirring shaft 10; the lower end of the main body 1 is fixedly connected with the butterfly valve 17, the butterfly valve 17 is preferably It is a pneumatic butterfly valve; the lower end side of the conical lower part of the main body 1 is also provided with a gas interface 16 (the gas interface 16 can be connected with an external gas source to pass the gas into the main body 1) and a heat medium inlet communicated with the jacket 3 215, the upper side of the body 1 is also provided with a heat medium inlet 13 and a heat medium outlet 14 that communicate with the jacket 3 (the heat medium is added from the heat medium inlet 2 15 to the jacket 3 to heat the body 1, when the jacket When the heat medium in 3 is enough, the valve set on the heat medium outlet 14 can be opened, and the heat medium can enter the upper cover 2 through the heat medium inlet 13 to heat the upper cover 2. When it is not working, the heat medium in the upper cover 2 It can be discharged through the heat medium inlet 13 and then through the heat medium outlet 14 and then through the heat medium inlet 2 15), and the upper end surface of the upper cover 2 is also provided with a manhole 9 that communicates with the interior of the body 1 (the manhole 9 can be used for feeding and mixing and drying. The process is observed) and the dust collector 19, the end of the dust collector 19 away from the main body 1 is the vacuuming port 18 (the vacuuming port 18 is connected with the vacuuming device-vacuum pump, etc., for setting the inside of the main body 1 into a vacuum environment); such as As shown in FIG. 3 , the gas port 16 is communicated with the gas flushing pipe 21 through a pipeline. The gas flushing pipe 21 is fixed on the inner wall of the main body 1 and is longitudinally spirally arranged around the inner wall of the main body 1. The gas flushing pipe 21 is provided with air holes 22 , the preferred number of the air purging pipes 21 is 1, the air purging pipes 21 can also be dispersed into two or more channels through devices such as tee, and the opening direction of the air holes 22 is vertical and/or parallel to the body 1 (when the opening direction of the air hole 22 is perpendicular to the inner wall of the main body 1, the gas is mainly blown to the main stirring shaft 10 and the ribbon 12, and the gas is mainly blown to the inner wall of the main body 1 when the opening direction of the air hole 22 is parallel to the inner wall of the main body 1; It is necessary to continuously inject high-pressure gas into the gas port 16 to make it pass through the air duct 21 and then be discharged to the interior of the main body 1 from the air hole 22 to prevent the material in the main body 1 from flowing back into the air hole 22. When the material is dried or mixed, it must be continued. The material on the inner wall of the main body 1, the main stirring shaft 10 and the spiral belt 12 can be washed down by introducing gas; a check valve can also be set at the gas interface 16 to further prevent the material from flowing back into the air hole 22); the inner upper end of the main body 1 is also There is a high-pressure nozzle 20 that can pass high-pressure gas or high-pressure liquid, and the main body 1 The side of the machine is also provided with a bracket 5, and the bracket 5 can be connected with the support legs of the position to be installed in the form of bolt connection, so as to fix the single-cone vacuum dryer.

The above-mentioned heat medium outlet 14 and heat medium inlet 2 15 are communicated with the heating device of the external source, and the heat medium can be passed into the jacket 3 for indirect heating of the material inside the body 1; if the liquid evaporated during the drying process needs to be collected, it can be Add condensers and collectors and other devices.

Another preferred solution of the present invention is to set the main stirring shaft 10 to be composed of 2-3 sections of auxiliary stirring shafts that are detachably connected (such as screw connections, etc.). The ribbon 12 longitudinally arranged on the auxiliary stirring shaft can facilitate the installation, maintenance and replacement of the stirring shaft.

The utility model can also fix a blade on the outer edge of the ribbon 12 (the blade is not shown in the figure, the blade can be in the shape of a sharp knife or a curved knife, the cutting direction of the blade can be the same as the rotation direction of the stirring shaft or there is a certain clamp angle, which can ensure that the blade can cut the material).

When using, first check whether the connection of each part of the whole machine is loose, turn on the vacuum pump to check whether the pipeline connection, inlet and outlet are leaked or blocked, and the heating pipeline is also checked accordingly, and the heating medium is introduced in advance for heating. When the stirring shaft is composed of multiple auxiliary stirring shafts, it is necessary to check whether each auxiliary stirring shaft is firmly connected before use. If it is used for material mixing, the material can be added into the main body 1 through the manhole 9, the motor 6 is turned on to start the rotation of the main stirring shaft 10, and the spiral belt 12 rotates to mix the material, which can be fed through the gas port 16 according to the nature of the material. Nitrogen or other gas, the gas is sprayed into the body 1 through the air hole 22 on the gas flushing pipe 21, which can accelerate the mixing of materials. The mixing process can start the stirring of the ribbon 12 and the gas introduction at the same time, or the ribbon 12 can be stirred and introduced at the same time. The gas is carried out at intervals. After the mixing is completed, the material is discharged from the lower end of the butterfly valve 17. When the material is discharged to a certain extent, the gas can continue to be introduced to fully flush the material on the main stirring shaft 10, the ribbon 12 and the inner wall of the main body 1 through the butterfly valve 17. Collection; after use, the high-pressure nozzle 20 sprays external gas or water into the body 1 to fully clean the dryer, which has no effect on the mixing or drying of the next batch of materials, and can prevent the materials from adhering to the inner wall of the body 1 , prolong the service life of the equipment.

Secondly, when the single-cone vacuum dryer of the present utility model is used for drying materials, the materials can be fully stirred and rapidly dried by means of the air blowing pipeline 21 and the air hole 22 and other structures; the single-cone vacuum dryer of the present utility model can also be used for drying materials In the process of redox and other processes, the above-mentioned purposes are achieved by introducing different gases into the gas interface 16 .

Claims (8)

1. A single-cone vacuum drier comprises a hollow body (1), wherein the body (1) comprises a conical lower part and an upper cover (2) hermetically covered with an upper port of the conical lower part; a jacket (3) for a heating medium to pass through is arranged on the periphery of the body (1), and a heat-insulating layer (4) is arranged on the periphery of the jacket (3); a main stirring shaft (10) is longitudinally arranged in the main body (1), one end of the main stirring shaft (10) penetrates through the upper cover (2) and is rotationally connected with a speed reducer (7) arranged on the upper cover (2), the speed reducer is electrically connected with a motor (6), and a rotary joint (8) is arranged at one end of the main stirring shaft (10) extending out of the speed reducer (7); a main stirring shaft (10) in the body (1) is fixedly connected with a spiral belt (12) through a support rod (11), and the spiral belt (12) is wound around the periphery of the main stirring shaft (10) in a single spiral shape; the lower extreme and butterfly valve (17) fixed connection of body (1), the lower extreme side of body (1) toper lower part still is equipped with gas connector (16) and with press from both sides communicating heat medium import two (15) of cover (3), the upper end side of body (1) still is equipped with press from both sides communicating heat medium import one (13) of cover (3) and heat medium export (14), upper cover (2) up end still is equipped with manhole (9) and dust remover (19) with body (1) inside intercommunication, the one end that body (1) were kept away from in dust remover (19) is for taking out vacuum port (18), its characterized in that: the gas connector (16) is communicated with the gas charging pipeline (21) through a pipeline, the gas charging pipeline (21) is fixedly arranged on the inner wall of the body (1) and is longitudinally and spirally arranged around the inner wall of the body (1), and the gas charging pipeline (21) is provided with a gas hole (22); the upper end in the body (1) is also provided with a high-pressure spray head (20) which can be filled with high-pressure gas or high-pressure liquid.

2. The single cone vacuum dryer according to claim 1, wherein: the butterfly valve (17) is a pneumatic butterfly valve.

3. The single cone vacuum dryer according to claim 1, wherein: the heat-insulating layer (4) is a foam heat-insulating layer.

4. The single cone vacuum dryer according to claim 1, wherein: the number of the air charging pipelines (21) is 1.

5. The single cone vacuum dryer according to claim 1, wherein: the opening direction of the air hole (22) is vertical and/or parallel to the inner wall of the body (1).

6. The single cone vacuum dryer according to claim 1, wherein: the side surface of the body (1) is also provided with a bracket (5).

7. The single cone vacuum dryer according to claim 1, wherein: the main stirring shaft (10) is formed by detachably connecting 2-3 sections of auxiliary stirring shafts, and each section of auxiliary stirring shaft is fixedly connected with a spiral belt (12) which is longitudinally arranged around the auxiliary stirring shaft through a supporting rod (11).

8. The single cone vacuum dryer according to claim 1, wherein: the outer edge of the spiral belt (12) is fixedly provided with a blade.

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