CN217179198U

CN217179198U - Paddle dryer

Info

Publication number: CN217179198U
Application number: CN202220680315.5U
Authority: CN
Inventors: 张鹏; 李晓飞; 邹梓昕
Original assignee: Yantai Donghua New Material Co ltd
Current assignee: Yantai Donghua New Material Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-12
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a paddle dryer, which comprises a shell, wherein a feed inlet and a discharge outlet are respectively arranged at two ends of the shell, a hollow hot shaft is arranged in the shell, the axis of the hollow hot shaft is parallel to the axis of the shell, and blades are arranged on the outer surface of the hollow hot shaft at intervals; one end of the shell close to the feed inlet is provided with a hot shaft steam inlet and a shell steam inlet, and one end of the shell close to the discharge outlet is provided with a hot shaft condensate outlet and a shell condensate outlet; the driving component is used for driving the hollow hot shaft to rotate around the axis. The utility model can evenly stir wet materials, and has good drying effect; the blades of the hollow hot shaft which are meshed with each other have a self-cleaning function on materials adhered to the hollow hot shaft, so that the heat transfer and drying effects of the hollow hot shaft are ensured; the total investment of equipment is small, the energy consumption is low, the operation cost is low, and the equipment investment cost and the labor cost are greatly reduced. The utility model also provides an application of above-mentioned paddle desiccator in retrieving the resin product in the heavy ends.

Description

Paddle dryer

Technical Field

The utility model relates to a drying equipment technical field, in particular to paddle desiccator.

Background

The alicyclic project can produce a certain amount of heavy components as by-products, and the conventional treatment scheme is to send waste liquid to burn, so that a large amount of products are wasted. Therefore, there is a need for a device for separating and recovering the product therein.

In the process of separating and recycling products, a solvent or moisture in the products needs to be dried, so that the products are convenient to package, transport, store, process and use, and the types of common drying equipment are more, such as a spray drying device, a fluidized bed drying device, an air flow drying device, a rotary cylinder dryer, a box type dryer, a hot air dryer and the like; guarantee inside dry abundant, but current paddle desiccator's drying effect is relatively poor for inefficiency influences production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned technical problem. The utility model provides a paddle desiccator can improve drying effect, improves drying efficiency, and the energy consumption is low, and equipment total investment is little.

In order to solve the technical problem, an embodiment of the utility model discloses a paddle dryer, which comprises a shell, wherein a feed inlet and a discharge outlet are respectively arranged at two ends of the shell, a hollow hot shaft is arranged in the shell, the axis of the hollow hot shaft is parallel to the axis of the shell, and blades are arranged on the outer surface of the hollow hot shaft at intervals;

a hot shaft steam inlet and a shell steam inlet are formed in one end, close to the feed port, of the shell, and a hot shaft condensate outlet and a shell condensate outlet are formed in one end, close to the discharge port, of the shell;

the driving component is used for driving the hollow hot shaft to rotate around the axis.

Further, the hollow hot shaft comprises a first hollow hot shaft and a second hollow hot shaft, and the first hollow hot shaft and the second hollow hot shaft rotate oppositely;

the blades of the first hollow hot shaft are meshed with the blades of the second hollow hot shaft.

Further, the blades are of wedge-shaped structures and are arranged perpendicular to the outer surface of the hollow hot shaft in an extending mode.

Further, an exhaust port is further arranged on the shell.

Further, the casing extends the setting along the horizontal direction, the feed inlet set up in the upper portion surface of casing, the discharge gate set up in the lower part surface of casing.

Compared with the prior art, the utility model discloses a paddle drying machine has following technological effect:

the hollow hot shaft is used for stirring the wet materials uniformly, so that the materials are mixed to the maximum extent, and the drying effect of the materials is good;

the blades of the hollow hot shaft which are meshed with each other have a self-cleaning function on materials adhered to the outer wall of the hollow hot shaft, so that the heat transfer and drying effects of the hollow hot shaft are ensured;

no additional auxiliary equipment is needed, the total investment of the equipment is low, the energy consumption is low, the operation cost is low, and the equipment investment cost and the labor cost are greatly reduced.

Drawings

Fig. 1 shows a schematic structural view of a paddle dryer according to an embodiment of the present invention;

fig. 2 shows a schematic partial structure diagram of a hollow hot shaft of a paddle dryer according to an embodiment of the present invention.

Reference numerals:

1-shell, 2-feed inlet, 3-discharge outlet, 4-hollow hot shaft, 5-blade, 6-hot shaft steam inlet, 7-hot shaft condensate outlet, 8-shell steam inlet, 9-shell condensate outlet, 10-driving component, 11-first hollow hot shaft, 12-second hollow hot shaft and 13-exhaust outlet.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, the paddle dryer of the present invention comprises a housing 1, wherein the housing 1 is hollow, the housing 1 extends in a horizontal direction, a feed inlet 2 is arranged on the upper surface of one end of the housing 1, a discharge outlet 3 is arranged on the lower surface of the other end of the housing 1, a hollow hot shaft 4 extending in the horizontal direction is arranged inside the housing 1, and a plurality of blades 5 are arranged on the outer surface of the hollow hot shaft 4 at intervals;

a hot shaft steam inlet 6 is arranged at one end part of the shell 1, which is provided with the feed inlet 2, and a hot shaft condensate outlet 7 is arranged at one end part of the shell, which is provided with the discharge outlet 3, the hot shaft steam inlet 6, the hollow hot shaft 4 and the hot shaft condensate outlet 7 are communicated with each other, water vapor is adopted as a heat source, and steam enters the hollow hot shaft 4 through the hot shaft steam inlet 6 during work; the upper portion that casing 1 was provided with the one end of feed inlet 2 is provided with casing steam inlet 8, and the bottom that is provided with the one end of discharge gate 3 is provided with casing condensate outlet 9, and casing steam inlet 8, casing 1, casing condensate outlet 9 link up mutually, let in casing 1 inside with steam through casing steam inlet 8. The end part of the shell 1 close to one end of the feed inlet 2 is also provided with a driving part 10 for driving the hollow hot shaft 4 to rotate around the axis so as to realize the stirring and moving of the wet materials.

Referring to fig. 2, the utility model discloses be provided with two hollow hot axles that are parallel to each other, first hollow hot axle 11 and the hollow hot axle 12 of second promptly, drive unit 10 orders about first hollow hot axle 11 and the hollow hot axle 12 of second respectively around respective axis rotation in opposite directions, simultaneously at the rotation in-process, the blade of first hollow hot axle 11 and the hollow hot axle 12 blade intermeshing of second for first hollow hot axle 11 has self-cleaning effect with the hollow hot axle 12 of second, prevents effectively that the material from gluing on the outer wall of first hollow hot axle 11 and the hollow hot axle 12 of second. The cake-shaped materials have strong caking property and are easy to adhere to a heat transfer surface, thereby influencing the heat transfer and drying effects. Two hot shafts of the paddle dryer are meshed with each other, and materials can be automatically removed after being adhered to a certain degree, so that heat transfer and drying deterioration in the drying process are avoided.

The paddle dryer adopts water vapor as a heat source, when the paddle dryer works, the first hollow hot shaft 11, the second hollow hot shaft 12 and the shell 1 are all filled with the steam, and wet materials are heated and dried through the wall of the dryer; meanwhile, the wet materials gradually move towards the discharge port 3 under the continuous rotation and stirring of the first hollow hot shaft 11 and the second hollow hot shaft 12, so that the materials are mixed and dried to the maximum extent.

The blade 5 is a wedge-shaped structure, and the blade 5 is perpendicular to the outer surface of the hollow hot shaft 4 and extends in the vertical direction. As shown in fig. 1-2, the width of the blade 5 gradually decreases from the end connected with the hollow hot shaft 4 to the end away from the hollow hot shaft 4 to facilitate the engagement of the first hollow hot shaft 11 and the second hollow hot shaft 12.

The upper end surface of the shell 1 is also provided with an exhaust port 13 to exhaust volatile matters evaporated from wet materials and prevent the internal pressure of the shell 1 from being overlarge.

Particularly, use the utility model discloses a when paddle dryer carries out the material drying, pass through the gear pump with the material that moisture content is 40% (wt) and add paddle dryer in succession evenly, wet material is filled in the clearance that paddle dryer is full of wedge blade, and under the rotation of hollow hot axle, wet material is on one side by steam indirect heating, moves along on one side, and the material after the drying is discharged from the discharge gate.

Due to the continuous stirring of the wedge-shaped blades, the dried material is heated uniformly, is not easy to stick to the wall and is not easy to agglomerate. The tail end of the paddle dryer is provided with a vacuum pump set, the ultimate vacuum degree of the vacuum pump set is 50Pa, the vacuum pump set is in a vacuum state of 100-500 Pa in normal operation, volatile matters evaporated from wet materials are taken away from an exhaust port, steam condensate water is discharged through a hot shaft condensate outlet and a shell condensate outlet, and the whole process is carried out continuously.

The resin product obtained by evaporation is condensed by a condenser, and then the non-condensable gas is discharged into a subsequent tail gas treatment system through a vacuum system, in order to prevent the evaporated product from carrying heavy components to block the condenser, the condenser is condensed by hot water at 80 ℃, and the heavy components have certain fluidity at the temperature. In order to ensure the maximum recovery of resin products, the tail end of the vacuum system is provided with a secondary condenser, and the condenser is cooled by circulating cooling water. The cooled and recovered resin product is stored in a resin product storage tank and periodically sent to a designated place by a metering pump.

Heavy ends after drying enter a heavy end buffer tank for storage, the heavy end buffer tank is provided with steam tracing, the heavy ends are prevented from being condensed to block a follow-up system, and tar in the heavy end buffer tank is sent to the follow-up granulation system through a gear pump under the condition of liquid level control.

Carry out the drying to wet material through this paddle desiccator, have following advantage:

(1) uniform stirring and good drying effect

The hollow hot shaft in the working process not only is a main heating surface, but also continuously rotates, so that materials are mixed to the maximum extent, and the drying effect of the materials is better than that of disc type drying;

(2) the hot shafts can be mutually meshed, has self-cleaning function, and can prevent materials from sticking to the wall

The blades of two or more hot shafts are meshed with each other, and when filter cake-shaped materials with strong caking property are adhered to a heat transfer surface, automatic cleaning can be realized, so that the deterioration of heat transfer and drying in the drying process is avoided, and the heat transfer and drying effects are ensured;

(3) low energy consumption and low operation cost

The thermal efficiency of the paddle dryer of the utility model is as high as 90 percent, and the operation cost is only 30 percent of that of hot air type dryers such as air flow drying, micro powder drying and the like;

(4) small dust entrainment and material loss

The exhaust air for drying the paddle mainly comprises water vapor and a small amount of carrier gas, the exhaust air amount is only 1/8 of the hot air type drying exhaust air amount, the exhaust air mainly comprises the water vapor, the entrained materials are easy to recover, a dust recovery device required subsequently is small, and the equipment is simple;

(5) small floor area and low investment

Although the investment of single hot air type drying equipment is small, the equipment has more auxiliary equipment, a plurality of auxiliary equipment such as an air heater, cyclone dust removal, bag type dust removal and the like are arranged, the occupied area is large, the capital investment is higher than that of blade drying, the operation and maintenance cost is high, the blade dryer does not relate to other additional auxiliary equipment, and the equipment investment is greatly reduced;

(6) the equipment has large operation elasticity and stable and reliable operation

The drying degree is controlled by adopting a plurality of means for drying the blades, and the operation is simple because the auxiliary equipment is few; the hot air type drying and dust removing equipment is huge, and when the humidity in the discharged air is too high, the cyclone separator and the bag filter are easy to block, so that the operation requirement is high; and the disc type drying equipment is easy to stick to the wall, the feed inlet is easy to block, and the overhauling frequency is high.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The paddle dryer is characterized by comprising a shell, wherein a feeding hole and a discharging hole are respectively formed in two ends of the shell, a hollow hot shaft is arranged in the shell, the axis of the hollow hot shaft is parallel to the axis of the shell, and blades are arranged on the outer surface of the hollow hot shaft at intervals;

2. The paddle dryer of claim 1, wherein the hollow hot shaft comprises a first hollow hot shaft and a second hollow hot shaft, the first hollow hot shaft and the second hollow hot shaft rotating in opposite directions;

3. The paddle dryer of claim 2, wherein the vanes are wedge shaped and extend perpendicular to an outer surface of the hollow hot shaft.

4. The paddle dryer of claim 1, wherein the housing is further provided with an exhaust port.

5. The paddle dryer of claim 1, wherein the housing extends horizontally, the inlet port is disposed on an upper outer surface of the housing, and the outlet port is disposed on a lower outer surface of the housing.