CN216877863U

CN216877863U - Energy-saving drying tower capable of recycling waste heat

Info

Publication number: CN216877863U
Application number: CN202121016441.2U
Authority: CN
Inventors: 李洋
Original assignee: Taian Huaweizhongke Fine Materials Co ltd
Current assignee: Taian Huaweizhongke Fine Materials Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2022-07-05
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to the field of drying towers, in particular to an energy-saving drying tower capable of recycling waste heat, which comprises a drying tower body, wherein a circulating air cavity is arranged on the lower side of the drying tower body, an exhaust pipe is also communicated with the lower side of the drying tower body, the tail end of the exhaust pipe is spirally and upwards arranged along the outer wall of the drying tower body, the exhaust pipe is used for exhausting waste gas in the drying tower body, unheated air is subjected to circulating heat exchange on the lower part of the drying tower by utilizing the circulating air cavity, so that the air can be preheated in advance, the energy utilization is reduced, the temperature of the lower part of the drying tower can be reduced, the phenomenon that materials are burnt off due to overhigh temperature is avoided, the dried hot air is circulated around the upper side of the drying tower through the exhaust pipe for one circle, the heat compensation and heat preservation are carried out on the inside of the drying tower by utilizing the waste heat, and the energy consumption is reduced.

Description

Energy-saving drying tower capable of recycling waste heat

Technical Field

The utility model relates to the field of drying towers, in particular to an energy-saving drying tower capable of recycling waste heat.

Background

The drying tower is drying equipment used in chemical industry, food and medicine, can be used for drying liquid raw materials, is matched with an atomizer to atomize the raw materials into small droplets, and utilizes hot air to contact and exchange heat with the atomized droplets in the drying tower to take away moisture in the droplets so as to rapidly dry the droplets and obtain dried powder substances. When the drying is carried out, some raw materials can be attached to the inner wall of the drying tower due to the physicochemical properties of the raw materials, the phenomenon is mostly generated at the lower part of the drying tower, and the attached materials are easy to be pasted if being always baked by high temperature in the drying tower; and after the raw materials are dried, a plurality of hot gases can be generated in the equipment, the hot gases can be discharged into the atmosphere after being dedusted by the traditional drying tower, but the hot gases still have high heat and certain utilization value, and the waste heat can be wasted when the hot gases are directly discharged into the atmosphere.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an energy-saving drying tower capable of recycling waste heat, which can reduce the temperature at the bottom of the drying tower, prevent materials on the inner wall of the drying tower from being baked at high temperature all the time, utilize the waste heat of waste gas generated after drying, protect the environment and save the energy.

In order to achieve the purpose, the utility model provides the following technical scheme: an energy-saving drying tower capable of recycling waste heat comprises a drying tower body, wherein a circulating air cavity is arranged on the lower side of the drying tower body and surrounds the periphery of the drying tower body; the circulating air cavity is communicated with an air inlet pipe and an air delivery pipe; the air delivery pipe is sequentially communicated with a fan and a heater, and one end of the air delivery pipe, which is far away from the circulating air cavity, penetrates into the drying tower body; the downside of drying tower body still communicates there is the blast pipe, the blast pipe passes the circulation wind chamber, just the one end that the drying tower body was kept away from to the blast pipe is upwards set up along the outer wall spiral of drying tower body, the blast pipe is used for discharging this internal waste gas of drying tower. Utilize the air that the circulation wind chamber will not heat yet to carry out the heat exchange that circulates to the drying tower lower part, both can preheat the air in advance, reduce the utilization of energy, can reduce the temperature of drying tower lower part again, avoid the high temperature to make the material paste and fall, the hot-air after accomplishing the drying encircles a week around the upside of drying tower through the blast pipe, utilizes the waste heat to carry out heat compensation and heat preservation, reduces energy consumption to the inside of drying tower.

Preferably, one end of the gas pipe, which is positioned in the drying tower body, is communicated with a gas distribution pipe; the gas distribution pipe is provided with a plurality of vent holes, so that the hot air can dry the materials in all directions.

As optimization, an atomizer is arranged at the top of the drying tower body, and the lower end of the atomizer extends into the drying tower body; a plurality of the blow vent all sets up towards the downside of atomizer, and the hot-air that blows off in the gas distribution pipe of being convenient for carries out the drying to the liquid drop after the atomizer atomizes better.

As optimization, the air inlet pipe and the air delivery pipe are arranged oppositely, the air inlet pipe is arranged on the lower side of the circulating air cavity, and the air delivery pipe is arranged on the upper side of the circulating air cavity, so that gas rising and circulating heat exchange are facilitated.

As optimization, the part of the exhaust pipe in the circulating air cavity is sleeved with the heat insulation pad to insulate the heat of the waste heat discharged from the exhaust pipe, so that the subsequent utilization is facilitated.

As optimization, the air inlet pipe is communicated with an air filter, so that air is filtered currently, and impurities are prevented from entering.

Preferably, the tail end of the exhaust pipe is sequentially communicated with a cyclone separator and a draught fan, and the waste gas is subjected to subsequent dust removal treatment.

As optimization, the gas distribution pipe is of an annular structure, so that heat exchange between the hot air and the atomized liquid drops is facilitated in an all-round mode.

Compared with the prior art, the utility model has the following beneficial effects: the circulating air cavity is arranged at the lower part of the drying tower, and the air is subjected to heat exchange with the bottom of the drying tower body through the circulating air cavity, so that the air can be preheated, the energy consumption can be reduced, the temperature at the bottom of the drying tower body is reduced, and the phenomenon that the material in the drying tower body is gelatinized due to high temperature caused by overhigh heat is avoided; the exhaust pipe for conveying the waste heat is arranged on the upper portion of the drying tower body in a surrounding mode, and the drying tower body is subjected to heat compensation and heat preservation, so that the waste heat can be reused.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

fig. 3 is a schematic sectional view in the direction of a-a in fig. 2.

The drying tower comprises a drying tower body 1, a drying tower body 2, a circulating air cavity 3, an air inlet pipe 4, an air conveying pipe 5, a fan 6, a heater 7, an exhaust pipe 8, an air distribution pipe 9, an air vent 10, an atomizer 11, a heat insulation pad 12, an air filter 13, a cyclone separator 14 and an induced draft fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; 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 invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the energy-saving drying tower capable of recycling waste heat comprises a drying tower body 1, wherein a circulating air cavity 2 is arranged at the lower side of the drying tower body 1, and the circulating air cavity 2 is arranged around the periphery of the drying tower body 1. The circulation wind chamber 2 is last to communicate has intake pipe 3 and gas-supply pipe 4, and gas is defeated into circulation wind chamber 2 through intake pipe 3 in, cools down and the heat transfer to drying tower body 1, and the air after the heat transfer is through gas-supply pipe 4 discharge circulation wind chamber 2. The intercommunication has fan 5 and heater 6 in proper order on the gas-supply pipe 4, just the one end that the circulation wind chamber 2 was kept away from to gas-supply pipe 4 runs through the air that enters after the heat transfer in the circulation wind chamber 2 of internal heater 6 being used for heating, because the air has carried out the heat exchange through circulation wind chamber 2 and drying tower body 1's bottom, consequently through can heating up the air in advance, can reduce the consumption of energy from this, and reduce the temperature of drying tower body 1 bottom, avoid the too high material that makes in the drying tower body 1 of heat because high temperature and gelatinization. The downside of drying tower body 1 still communicates there is blast pipe 7, blast pipe 7 passes circulating air chamber 2, because the upper portion of drying tower body 1 is the high temperature workspace, consequently will the one end that drying tower body 1 was kept away from to blast pipe 7 upwards sets up along the outer wall spiral of drying tower body 1, blast pipe 7 is used for discharging the waste gas in the drying tower body 1 for accomplish after the drying and still have a large amount of thermal waste gas and encircle a week around the upside of drying tower body 1 through blast pipe 7, utilize the waste heat to carry out heat compensation and heat preservation to the inside of drying tower body 1 upside, reduce energy resource consumption.

As shown in fig. 3, one end of the gas pipe 4 located in the drying tower body 1 is communicated with a gas distribution pipe 8, and a plurality of vent holes 9 are formed in the gas distribution pipe 8, so that hot air is uniformly blown out.

As shown in fig. 1-3, an atomizer 10 is disposed at the top of the drying tower body 1, and the lower end of the atomizer 10 extends into the drying tower body 1; a plurality of the vent holes 9 are all arranged towards the lower side of the atomizer 10, and are used for fully drying the liquid drops atomized by the atomizer 10.

As shown in fig. 1-3, the air inlet pipe 3 and the air delivery pipe 4 are arranged oppositely, the air inlet pipe 3 is arranged at the lower side of the circulating air cavity 2, and the air delivery pipe 4 is arranged at the upper side of the circulating air cavity 2.

As shown in fig. 3, in order to prevent the exhaust pipe 7 from being cooled when passing through the circulating air chamber, a heat insulating pad 11 is sleeved on a portion of the exhaust pipe 7 located in the circulating air chamber 2.

As shown in fig. 1 to 3, a gas filter 12 is connected to the inlet pipe 3.

As shown in fig. 1-3, the end of the exhaust pipe 7 is sequentially communicated with a cyclone separator 13 and an induced draft fan 14, and the exhaust gas is subjected to subsequent dust removal treatment.

As shown in fig. 3, the gas distribution 8 pipe is an annular structure, which facilitates heat exchange between the hot air and the atomized liquid droplets in all directions.

The working principle is as follows: according to the energy-saving drying tower convenient for recycling waste heat, the exhaust pipe 7 for conveying the waste heat is arranged on the upper portion of the drying tower body 1 in a surrounding mode, heat compensation and heat preservation are carried out on the drying tower body 1, so that the waste heat can be recycled, the bottom of the drying tower body 1 can be subjected to circulating heat exchange through the arrangement of the circulating air cavity 2, and materials near the inner wall of the drying tower body 1 are prevented from being pasted due to overheating of the temperature.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An energy-saving drying tower capable of reusing waste heat is characterized in that: the drying tower comprises a drying tower body, wherein a circulating air cavity is arranged on the lower side of the drying tower body and surrounds the periphery of the drying tower body; the circulating air cavity is communicated with an air inlet pipe and an air delivery pipe; the air delivery pipe is sequentially communicated with a fan and a heater, and one end of the air delivery pipe, which is far away from the circulating air cavity, penetrates into the drying tower body; the downside of drying tower body still communicates there is the blast pipe, the blast pipe passes the circulation wind chamber, just the one end that the drying tower body was kept away from to the blast pipe is upwards set up along the outer wall spiral of drying tower body, the blast pipe is used for discharging this internal waste gas of drying tower.

2. The waste heat reusable energy-saving drying tower according to claim 1, wherein: one end of the gas transmission pipe in the drying tower body is communicated with a gas distribution pipe; the gas distribution pipe is provided with a plurality of vent holes.

3. The waste heat reusable energy-saving drying tower according to claim 2, characterized in that: the top of the drying tower body is provided with an atomizer, and the lower end of the atomizer extends into the drying tower body; a plurality of the vent holes are all arranged towards the lower side of the atomizer.

4. The waste heat reusable energy-saving drying tower according to claim 3, characterized in that: the air inlet pipe and the air delivery pipe are arranged oppositely, the air inlet pipe is arranged on the lower side of the circulating air cavity, and the air delivery pipe is arranged on the upper side of the circulating air cavity.

5. The waste heat reusable energy-saving drying tower according to claim 4, wherein: and the part of the exhaust pipe in the circulating air cavity is sleeved with a heat insulation pad.

6. The waste heat reusable energy-saving drying tower according to claim 1, wherein: and the air inlet pipe is communicated with an air filter.

7. The waste heat reusable energy-saving drying tower according to claim 6, wherein: the tail end of the exhaust pipe is sequentially communicated with a cyclone separator and an induced draft fan.

8. The waste heat reusable energy-saving drying tower according to claim 2, characterized in that: the gas distribution pipe is of an annular structure.