CN219572441U - Drying device - Google Patents

Abstract

The utility model discloses a drying device, which relates to the field of chemical industry, and comprises a drying chamber and a water scraping assembly arranged at the upper part of the drying chamber, wherein the water scraping assembly comprises a push-pull rod, a water collecting corrugated pipe with a water collecting cavity and a water scraping piece for scraping water, one end of the push-pull rod is connected with one end of the water collecting corrugated pipe, and the other end of the push-pull rod extends out of the drying chamber and is in sliding connection with the drying chamber; the other end of the water collecting corrugated pipe is connected with the inner side wall of the drying chamber, the inner side wall of the drying chamber is provided with a water outlet communicated with the water collecting cavity, the inner top wall of the water collecting corrugated pipe facing the drying chamber is provided with a water falling area, a plurality of supporting rods for fixing the water scraping piece are arranged in the water falling area, and the water scraping piece is attached to the inner top wall of the drying chamber; when more water drops are hung at the top of the drying chamber, the push-pull rod is pulled, water is scraped into the water collecting corrugated pipe in time through the water scraping piece, the problem that the material is wetted by the water drops at the top of the drying chamber, and the material is failed to dry is avoided, and therefore the drying efficiency of the material is improved.

Description

Drying device

Technical Field

The utility model relates to the field of chemical industry, in particular to a drying device.

Background

In the patent document CN103090645A, a heater is arranged at the top of a sealing box, a material frame is arranged in the sealing box, a microwave generator is connected to a transmitter in the sealing box through a waveguide tube, and the sealing box is connected with a vacuum pump; when the material in the sealed box is dried in the microwave vacuum environment for a period of time, the moisture in the material is dispersed into the sealed box in the form of water vapor, but compared with the material frame, the temperature of the top of the sealed box is lower, so that the water vapor dispersed upwards is suspended on the top of the sealed box after contacting the top of the sealed box, and when the quantity of the water droplets is large, the water droplets are polymerized to fall into the material frame to wet the material, thereby reducing the material drying rate.

In the patent document CN205848570U, a microwave resonant cavity is connected with a vacuum pump, a rotary drum is arranged in the microwave resonant cavity, a hanging basket is hung on the periphery of the rotary drum, the upper part of the microwave resonant cavity is connected with one end of a heat pump through a return air pipe, and the other end of the heat pump is connected with the lower part of the microwave resonant cavity through an air outlet pipe; when the moisture filled in the microwave resonant cavity is more, the heat pump is turned on, the moisture in the microwave resonant cavity is taken away by hot air pumped by the heat pump, but after the hot air enters microwaves, the vacuum environment in the microwave resonant cavity is disturbed, so that the moisture partially hung at the top of the microwave resonant cavity is polymerized together and drops to the materials in the hanging basket, the materials are required to be dried again, and the drying time of the materials is prolonged.

The applicant, after careful study of the above documents, found that: adopt drying device among the above-mentioned patent document, after the material is dried for a period, the moisture in the material will hang at the drying device top, falls the material surface again and wets the material to lead to the material drying time extension, so how in time get rid of the moisture that the drying chamber top hung, avoid the drying chamber top moisture to wet the material, and then improved the technical problem that the material drying efficiency has become the technical scheme of the urgent need of technical staff who has need to solve.

Disclosure of Invention

The utility model aims to provide a drying device to solve the problems in the prior art, so that moisture at the top of a drying chamber can be scraped away in time, the problems that excessive moisture at the top of the drying chamber is accumulated and materials are wetted by falling downwards are avoided, and the drying efficiency of the materials is improved.

In order to achieve the above object, the present utility model provides the following solutions:

the utility model provides a drying device, which comprises a drying chamber and a water scraping assembly arranged at the upper part of the drying chamber, wherein the water scraping assembly comprises a push-pull rod, a water collecting corrugated pipe with a water collecting cavity and a water scraping piece for scraping water, one end of the push-pull rod is connected with one end of the water collecting corrugated pipe, and the other end of the push-pull rod extends out of the drying chamber and is in sliding connection with the drying chamber; the other end of the water collecting corrugated pipe is connected with the inner side wall of the drying chamber, a water outlet communicated with the water collecting cavity is formed in the inner wall of the drying chamber, a water falling area is formed in the water collecting corrugated pipe towards the inner top wall of the drying chamber, a plurality of supporting rods used for fixing the water scraping pieces are arranged in the water falling area, and the water scraping pieces are attached to the top wall of the drying chamber.

Preferably, the other end of the push-pull rod is connected with a telescopic driving mechanism.

Preferably, the wiper is provided with a plurality of diversion holes communicated with the water falling area, and the longitudinal section of the diversion holes is in a trapezoid shape with a big top and a small bottom.

Preferably, the push-pull rod is provided with a plurality of hollowed-out holes.

Preferably, the water collecting corrugated pipe is provided with a plurality of reinforcing semi-rings.

Preferably, the drying chamber is connected with a vacuum pump, and the drying chamber is also connected with an air pump for reducing the vacuum degree of the drying chamber.

Preferably, a condenser and a liquid storage tank are sequentially arranged between the vacuum pump and the drying chamber.

Preferably, the side wall of the drying chamber is provided with a plurality of bulging bellies which bulge outwards.

Preferably, a liquid level meter is arranged in the water collecting cavity, and a drain valve linked with the liquid level meter is arranged at the water outlet.

Preferably, the drying chamber is connected with a plurality of microwave generators, and the microwave generators are diagonally crossed.

Compared with the prior art, the utility model has the following technical effects:

1. the utility model adopts a push-pull rod which is arranged at the upper part of a drying chamber and is in sliding connection with the push-pull rod, one end of the push-pull rod is connected with a water collecting corrugated pipe, the other end of the water collecting corrugated pipe is connected with the inner side wall of the drying chamber, a water falling area facing the top wall in the drying chamber is arranged on the water collecting corrugated pipe, a water scraping piece which is attached to the top wall in the drying chamber is fixed on the water falling area, the push-pull rod is pulled to drive the water scraping piece to move, water hung on the top wall in the drying chamber is scraped into the water collecting corrugated pipe, and the problems that excessive water is hung on the top wall in the drying chamber, materials fall down to wet and the drying time of the materials is prolonged are avoided; meanwhile, an operator can compress and extrude the water collecting corrugated pipe to the inner wall at one side of the drying chamber through the push-pull rod when the water scraping assembly does not work, the bottom area of the water collecting corrugated pipe when the water collecting corrugated pipe does not work is reduced, and then the water suspended at the bottom of the water collecting corrugated pipe is reduced, so that the problem that the water at the bottom of the water collecting corrugated pipe drops to wet materials when the water collecting corrugated pipe scrapes water is avoided, and the drying efficiency of the materials is further improved.

2. According to the utility model, the water outlet communicated with the water collecting corrugated pipe is arranged on the inner side wall of the drying chamber, so that the water falling into the water collecting corrugated pipe can be discharged from the water outlet, the problem that the water scraping assembly is required to scrape water continuously due to the fact that the water is accumulated in the water collecting corrugated pipe and heated again to become water vapor by the environment of the drying chamber and hung at the top of the drying chamber is avoided, the effectiveness of scraping water by the water scraping assembly is ensured, and the drying efficiency of materials is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure in which a front cover is omitted from a drying chamber;

FIG. 2 is a front view of the drying chamber with the front cover omitted;

FIG. 3 is a schematic view of a wiper assembly;

FIG. 4 is an enlarged view of the wiper member;

wherein, 1, a drying chamber; 2. a push-pull rod; 3. a water collecting corrugated pipe; 3-1, a water outlet; 3-2, a water falling area; 4. a wiper member; 5. a support rod; 6. a telescopic driving mechanism; 7. a deflector aperture; 8. a hollowed hole; 9. a vacuum pump; 10. an air pump; 11. a condenser; 12. a liquid storage tank; 13. a drain valve; 14. a microwave generator; 15. rotating the tray; 16. a rotating drum; 17. a humidity sensor; 18. and (3) brushing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

It should be understood that, after the chemical raw materials/biological samples in the prior art are dried in the drying chamber 1 for a period of time, the moisture in the materials will be emitted in the form of water vapor, and compared with the material drying area, the temperature of the inner top wall of the drying chamber 1 is lower, when the water vapor with higher temperature moves upwards to contact with the inner top wall of the drying chamber 1, the water vapor will be liquefied and become water drops to hang on the inner top wall of the drying chamber 1, and when the water drops gather to a certain extent: when the gravity of the water drops is larger than the adsorption force between the water drops and the top of the drying chamber 1, the water drops fall from the inner top wall of the drying chamber 1 and wet the materials, so that the drying time of the materials is prolonged.

In order to solve the problem, as shown in fig. 1 or fig. 2, a wiper assembly is arranged at the upper part of a drying chamber 1, the wiper assembly comprises a push-pull rod 2, a water collecting corrugated pipe 3 with a water collecting cavity and a wiper 4 for wiping, one end of the push-pull rod 2 is connected with one end of the water collecting corrugated pipe 3, and the other end of the push-pull rod 2 extends out of the drying chamber 1 and is in sliding connection with the drying chamber 1; the other end of the water collecting corrugated pipe 3 is connected with the inner side wall of the drying chamber 1, a water falling area 3-2 is formed in the water collecting corrugated pipe 3 towards the inner top wall of the drying chamber 1, and a water scraping piece 4 attached to the inner top wall of the drying chamber 1 is fixed in the water falling area 3-2; after the materials in the drying chamber 1 are dried for a period of time, an operator pulls the push-pull rod 2 outwards to drive the wiper 4 to wipe the inner top wall of the drying chamber 1, and the water hung on the inner top wall of the drying chamber 1 is scraped into the water falling area 3-2, so that the problems that the moisture on the inner top wall of the drying chamber 1 is too much to hang and gather and drop downwards to wet the materials, the drying time of the materials is prolonged, the materials are prevented from being repeatedly dried, and the drying efficiency of the materials is ensured.

Meanwhile, the water scraping assembly is provided with a double-edged sword, so that water vapor emitted by the material can be suspended at the top of the water collecting cavity while the water on the inner top wall of the drying chamber 1 is removed, and the material can be easily dropped downwards to wet when the water collecting cavity scrapes water; in order to alleviate or even avoid the problem, the water collecting corrugated pipe 3 is used as a component for containing water at the top of the drying chamber 1, when the water scraping component is in a non-working state, namely no water scraping is performed, an operator can push the push-pull rod 2 inwards to press the water collecting corrugated pipe 3 to the inner side wall of the drying chamber 1 far away from one end of the push-pull rod 2, so that the bottom area of the water collecting corrugated pipe 3 exposed in the drying chamber 1 in the non-working state is reduced, and the water hanging at the bottom of the water collecting corrugated pipe 3 is reduced or even eliminated, so that the water collecting corrugated pipe 3 does not have water at the bottom or does not fall enough at the bottom when the water scraping operation is performed, the water hanging at the bottom of the water collecting corrugated pipe 3 is prevented from wetting materials, and the drying efficiency of the materials is further improved.

However, only the above structure is provided, the water suspended on the inner top wall of the drying chamber 1 is only transferred from the inner top wall of the drying chamber 1 to the water collecting cavity, but the water collecting cavity is still in the drying environment of the drying chamber 1, so after the water scraping component finishes scraping water for a period of time, the water in the water collecting cavity is heated again to be changed into water vapor to move upwards, and then is suspended on the inner top wall of the drying chamber 1 again, thus, the water scraping component is ineffective in scraping water, and the water scraping component needs to continuously scrape water.

In order to overcome the problems, as shown in fig. 1, the inner wall of the drying chamber 1 is provided with the water outlet 3-1 communicated with the water collecting cavity, after the water scraping component finishes water scraping, the water in the water collecting corrugated pipe 3 can be discharged from the water outlet 3-1 by extruding the water collecting corrugated pipe 3 through the push-pull rod 2, so that the water scraped by the water scraping component from the inner top wall of the drying chamber 1 does not need secondary water scraping, and the effectiveness of the water scraping operation of the water scraping component is ensured.

The wiper 4 is fixed in the water drop zone 3-2 through a support member, the support member can be of various structures, and the condition that the water storage of the water collecting corrugated pipe 3 is not affected and the wiper 4 can be stably fixed can be met, for example, a plurality of support rods 5 can be arranged in the water drop zone 3-2, and the wiper 4 is fixed through the support rods 5; the wiper 4 may be bristles 18, a wiper blade, or other structure that wipes off moisture from the inner top wall of the drying chamber 1.

Meanwhile, in order to ensure that the water in the water collecting corrugated pipe 3 can be discharged in time and cannot overflow the water collecting corrugated pipe 3, a liquid level meter (not shown in the figure) is arranged in the water collecting corrugated pipe 3, a water outlet 3-1 is provided with a water discharge valve 13 linked with the liquid level meter, and when more water accumulated in the water collecting corrugated pipe 3 reaches the drainage boundary line of the liquid level meter, the water discharge valve 13 is automatically opened to discharge water.

The utility model is also provided with the plurality of diversion holes 7 on the wiper 4, so that the water scraped by the wiper 4 can directly enter the water falling area 3-2 through the diversion holes 7, and the problem that the wiper fails due to the fact that the inner top wall of the dehumidified drying chamber 1 is wetted again when the wiper 4 retains more water after the wiper is extruded to the inner side wall of the drying chamber 1 far away from the push-pull rod 2 is avoided; in order to facilitate the collection of the water at the top of the drying chamber 1, the utility model adopts the diversion hole 7 (not shown in the figure, which is the prior art) with a large vertical section and a small vertical section, so that the water scraped onto the scraping piece 4 can more easily enter the water collecting corrugated pipe 3 through the diversion hole 7.

Further, if the timeliness of the wiping operation by the wiper 4 is improved, one surface of the drying chamber 1 may be made of high strength glass so that an operator can observe the inner ceiling wall of the drying chamber 1 and perform the wiping operation in time.

Alternatively, the utility model can also be provided with the humidity sensor 17 connected with the drying chamber 1 and an alarm connected with the humidity sensor 17, wherein the humidity sensor 17 can be arranged on the top of the drying chamber 1 or other positions of the drying chamber 1, which can detect the moisture on the top of the drying chamber 1. The inner top wall of the drying chamber 1 is detected in real time through the humidity sensor 17, when the moisture content of the inner top wall of the drying chamber 1 is about to reach a dehumidification condition, the humidity sensor 17 transmits a signal to an alarm, and the alarm generates sound/brightness to remind an operator to pull the push-pull rod 2 to carry out water scraping operation.

Moreover, the operator pushes the push-pull rod 2 inwards to compress the water collecting corrugated pipe 3, but on one hand, the manual extrusion of the push-pull rod 2 has subjectivity and is not easy to compress the water collecting corrugated pipe 3 in place, and on the other hand, even if the operator extrudes the water collecting corrugated pipe 3 in place (extrusion means that the water collecting corrugated pipe 3 is extruded to the side wall of one end of the drying chamber 1 far away from the operating rod), the water collecting corrugated pipe 3 has a certain rebound amount, and the operator cannot always extrude the push-pull rod 2, so that the water collecting corrugated pipe 3 is not easy to compress in place; the water collecting corrugated pipe 3 is not compressed in place, the bottom area of the water collecting corrugated pipe 3 exposed in the drying chamber 1 is large, so that more water is suspended at the bottom of the water collecting corrugated pipe 3, the water at the bottom of the water collecting corrugated pipe easily drops to wet materials when the water scraping operation is performed, and the drying time of the materials is prolonged.

In addition, as one end of the push-pull rod 2 is connected with the water collecting corrugated pipe 3, part of the push-pull rod 2 exists in the drying chamber 1, so that moisture can be suspended on the bottom surface of the push-pull rod 2, and the moisture on the bottom surface of the push-pull rod 2 cannot be removed through the water scraping assembly, so that more moisture on the bottom surface of the push-pull rod 2 accumulates and can drop to wet materials; therefore, the push-pull rod 2 is hollowed, so that the contact area of the push-pull rod 2 is reduced to the greatest extent, most of water vapor emitted by the material passes through the hollowed-out holes 8 of the push-pull rod 2 and contacts with the inner top wall of the drying chamber 1, and the water in the inner top wall of the drying chamber 1 is removed through the wiper assembly.

However, it should be noted that, when the push-pull rod 2 is provided with the hollowed-out hole 8, the rigidity of the push-pull rod 2 needs to be ensured, so as to avoid the breakage of the push-pull rod 2 when an operator pulls the push-pull rod 2.

In order to solve the problem, as shown in fig. 2, one end of the push-pull rod 2 extending out of the drying chamber 1 is provided with a telescopic driving mechanism 6, and the push-pull rod 2 is driven by the telescopic driving mechanism 6 to squeeze the water collecting corrugated pipe 3, so that the water collecting corrugated pipe 3 can be squeezed and positioned on the inner wall of one side of the drying chamber 1 far away from the push-pull rod 2 in a non-working state, the water collecting corrugated pipe 3 is squeezed to a smaller volume, the bottom area of the water collecting corrugated pipe 3 exposed in the drying chamber 1 in the non-working state is reduced to the greatest extent, the water collecting corrugated pipe 3 is prevented from hanging more water, and wet materials drop, so that the material drying efficiency is further improved.

The telescopic driving mechanism 6 can be an electric push rod, an air cylinder, a hydraulic cylinder, a linear motor, a screw rod or other driving mechanisms capable of driving the push-pull rod 2 to perform linear motion and the like.

It should be noted that after the water collecting bellows 3 is extruded for a long period by an operator or the telescopic driving mechanism 6, it is easy to generate deflection deformation or zero offset, so that the water collecting bellows 3 is broken or falls downwards in an extrusion state, on the one hand, the replacement of the water collecting bellows 3 will increase the drying cost, and on the other hand, the falling down bellows will increase the bottom area of the falling down bellows exposed in the drying chamber 1 in a non-working state, so that the materials are wetted (the reason is detailed above); therefore, the present utility model is provided with a plurality of reinforcing half rings (not shown in the figure, this is the prior art) on the outer side of the water collecting corrugated pipe 3, and the rigidity and the deformation resistance of the water collecting corrugated pipe 3 are improved by the reinforcing half rings, so that the water collecting corrugated pipe 3 is not easy to damage after long-time water scraping operation is performed, thereby solving the problems.

In addition, the drying chamber 1 in the present utility model may be dried by various drying methods, such as vacuum drying, microwave drying, hot air drying, freeze drying, microwave-vacuum pulsating cycle drying, spray drying, etc.

However, when the drying chamber 1 is used for drying chemical raw materials, the following conditions are required to be met, on the one hand, the moisture in the materials can be required to be rapidly dissipated; on the other hand, the material is required to be not damaged in the drying process.

In the above drying mode, vacuum drying reduces the boiling point of moisture so that the material can be dried at a lower temperature, but it is seen that: firstly, in a vacuum drying environment, firstly vaporizing water on the surface of a material, and removing the water by vacuum equipment, wherein when the water on the surface of the material is reduced to be enough to form a temperature difference between the interior of the material and the surface due to vaporization; the water in the material can diffuse to the surface under the action of temperature difference, and the water is removed; secondly, air convection heat transfer is difficult to carry out under the vacuum condition, and heat energy is provided for materials only by means of heat conduction; from the above, the material in the vacuum drying environment is gradually dissipated, and the heat transfer mode is limited, so that the drying speed of the material in the vacuum environment is slower.

The microwave can heat the material from the inside and the surface at the same time, the drying speed is faster, but the material is static, and the microwave in the microwave resonant cavity is unevenly distributed, so that the problems of local overheating, surface hardening, uneven color, sharp angle effect and the like of the material easily occur in the drying process, and the influence on the quality of the material is larger.

The hot air drying is to gradually dry the materials from outside to inside, and obviously, if the hot air drying is adopted, the damaged chemical raw materials are obtained after the drying is completed.

Based on the above discussion, in order to dry the materials to the specified water content in a short time without damage, the utility model adopts microwave-vacuum drying to dry the materials: the microwave drying can make up for the defect of low vacuum drying rate, and the vacuum drying can finish drying the material at a lower temperature, so that the problem of local overheating is avoided; as shown in fig. 2, the drying chamber 1 of the present utility model is connected with a vacuum pump 9 and a microwave generator 14, thereby creating a microwave-vacuum environment inside the drying chamber 1.

However, it should be noted that, if the drying of the material is performed in a microwave-vacuum environment, when the moisture on the inner top wall of the drying chamber 1 needs to be removed by the wiper assembly, the push-pull plate is difficult to pull because of a certain vacuum degree in the drying chamber 1, so that the drying chamber 1 is further connected with the air pump 10 in order to facilitate the pulling of the push-pull plate; when moisture in the drying chamber 1 reaches a dehumidification condition, the air pump 10 is opened, a small amount of air is pumped into the drying chamber 1, so that the vacuum degree in the drying chamber 1 is reduced, and the pulling of the push-pull plate is facilitated; in order to avoid damage to materials caused by overhigh temperature of hot air pumped by the air pump 10, the drying chamber 1 is connected with a temperature sensor, a temperature regulating member is arranged between the air pump 10 and the drying chamber 1, the temperature of the drying chamber 1 to be dehumidified is timely fed back to a control system through the temperature sensor, and the temperature of the hot air pumped by the air pump 10 is regulated by the control system through the temperature regulating member so as to avoid damage to the materials.

Moreover, when the vacuum pump 9 pumps air in the drying chamber 1 to create a vacuum environment, if the water content of the material is large, part of the water on the surface of the material can be discharged by the vacuum pump 9 together with the air, and the vacuum pump 9 is fed with water, so that on one hand, overload can occur due to overlarge rotation resistance of the vacuum, and the service life of the vacuum pump 9 is reduced; on the other hand, the water entering the vacuum pump 9 will cause the emulsification of the oil in the vacuum pump 9, so that the exhaust filter of the vacuum pump 9 is blocked, and the exhaust performance and the service life of the filter element are affected. In order to solve the above technical problems of the vacuum pump 9, as shown in fig. 2, the present utility model sequentially provides a condenser 11 and a liquid storage tank 12 between the vacuum pump 9 and the drying chamber 1, and the air discharged from the vacuum pump 9 is dehumidified by the condenser 11, and the moisture contained in the air is removed and stored in the liquid storage tank 12, thereby preventing the vacuum pump 9 from having the above problems.

Meanwhile, vacuum drying requires a larger thickness of the shell of the drying chamber 1 to avoid compression deformation or weld cracking of the drying chamber 1; in order to reduce the thickness of the shell of the drying chamber 1, the side wall of the drying chamber 1 is provided with a plurality of outwards-protruding bulging bellies (not shown in the figure, which is the prior art), the bulging bellies can uniformly disperse the received pressure to the periphery, and the problem of stress concentration is avoided, so that the drying chamber 1 has higher compression resistance, and when the drying chamber 1 bears the same atmospheric pressure, the drying chamber 1 can adopt thinner wall thickness and fewer reinforcing ribs, thereby saving metal plates and reducing the processing cost.

In addition, in order to improve the uniformity of microwave drying, a rotary tray 15 is arranged in the drying chamber 1, the rotary tray 15 is driven by a rotary drum 16 fixed on the side wall of the drying chamber 1, and at the moment, materials are positioned on one side of the drying chamber 1 far away from the water collecting corrugated pipe 3 and are arranged in a staggered manner relative to the water collecting corrugated pipe 3; the materials to be dried are placed in the rotary tray 15, and the materials are heated uniformly through the rotation of the rotary tray 15, so that the microwave generator 14 cannot be aligned to one material for drying, the drying and overheating of the single material are prevented, and the materials are heated uniformly; furthermore, the top and the bottom of the drying chamber 1 are provided with a plurality of microwave generators 14, and the microwave generators 14 are diagonally crossed and uniformly arranged along the length direction of the drying chamber 1 (the length direction refers to the drawing direction of the push-pull plate), so that the uniformity of material drying along the length direction of the drying chamber 1 is ensured, and the uniformity of microwave drying is further improved.

In addition, in order to further shorten the drying time, the rotary tray 15 is provided with the hollow holes 8, so that moisture at the bottom of the material can be dispersed without gradually rising to the surface of the material through the inside of the material, and can be dispersed from the bottom of the rotary tray 15, thereby effectively shortening the drying time of the material and improving the drying efficiency of the material.

The housing of the drying chamber 1 in the present utility model may be made of an aluminum magnesium alloy or stainless steel.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims (10)

1. A drying apparatus, characterized in that: the device comprises a drying chamber and a water scraping assembly arranged at the upper part of the drying chamber, wherein the water scraping assembly comprises a push-pull rod, a water collecting corrugated pipe with a water collecting cavity and a water scraping piece for scraping water, one end of the push-pull rod is connected with one end of the water collecting corrugated pipe, and the other end of the push-pull rod extends out of the drying chamber and is in sliding connection with the drying chamber; the other end of the water collecting corrugated pipe is connected with the inner side wall of the drying chamber, a water outlet communicated with the water collecting cavity is formed in the inner wall of the drying chamber, a water falling area is formed in the water collecting corrugated pipe towards the inner top wall of the drying chamber, a plurality of supporting rods used for fixing the water scraping pieces are arranged in the water falling area, and the water scraping pieces are attached to the top wall of the drying chamber.

2. A drying apparatus according to claim 1, wherein: the other end of the push-pull rod is connected with a telescopic driving mechanism.

3. A drying apparatus according to claim 1 or 2, wherein: the water scraping piece is provided with a plurality of flow guide holes communicated with the water falling area, and the longitudinal section of the flow guide holes is in a trapezoid shape with a large upper part and a small lower part.

4. A drying apparatus according to claim 1 or 2, wherein: the push-pull rod is provided with a plurality of hollowed-out holes.

5. A drying apparatus according to claim 2, wherein: the water collecting corrugated pipe is provided with a plurality of reinforcing semi-rings.

6. A drying apparatus according to claim 1, wherein: the drying chamber is connected with a vacuum pump, and the drying chamber is also connected with an air pump for reducing the vacuum degree of the drying chamber.

7. A drying apparatus according to claim 6, wherein: and a condenser and a liquid storage tank are sequentially arranged between the vacuum pump and the drying chamber.

8. A drying apparatus according to claim 6, wherein: the lateral wall of drying chamber is equipped with the bellied tripe of a plurality of outwards protruding.

9. A drying apparatus according to claim 1, wherein: the water collecting cavity is internally provided with a liquid level meter, and the water outlet is provided with a drain valve linked with the liquid level meter.

10. A drying apparatus according to claim 1, wherein: the drying chamber is connected with a plurality of microwave generators, and the microwave generators are diagonally crossed.