CN218478657U

CN218478657U - Belt type low-temperature circulating dehumidifying and drying system

Info

Publication number: CN218478657U
Application number: CN202222543816.1U
Authority: CN
Inventors: 朱伟娜; 王艳民; 魏晓东; 马淑叶
Original assignee: Henan Aierwang New Energy And Environment Co ltd
Current assignee: Henan Aierwang New Energy And Environment Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-02-14
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to a mummification equipment field, concretely relates to belt low temperature circulation dehumidification mummification system. The system comprises a drying chamber, wherein the drying chamber comprises a drying chamber shell and a plurality of conveying belts arranged in the drying chamber shell, the conveying belts comprise a left conveying belt close to the left side of the drying chamber shell and a right conveying belt close to the right side of the drying chamber shell, wind shields are arranged on the right side of the left conveying belt and the left side of the right conveying belt, the wind shields comprise a horizontal baffle and an arc-shaped baffle fixedly connected with the horizontal baffle, the horizontal baffle is fixedly connected with the drying chamber shell, and the arc-shaped surface of the arc-shaped baffle faces towards the conveying belts; an air inlet pipe is arranged below the conveying belt, an inlet air distribution plate is arranged at the top of the air inlet pipe, and air inlet holes are formed in the inlet air distribution plate; an air outlet pipe is arranged above the conveying belt, a plurality of outlet air distribution plates are arranged at the bottom of the air outlet pipe, and air outlet holes are formed in the outlet air distribution plates. The utility model discloses an increase the contact time of dry gas and mud and improved sludge drying efficiency.

Description

Belt type low-temperature circulating dehumidifying and drying system

Technical Field

The utility model relates to a mummification equipment field, concretely relates to belt low temperature circulation dehumidification mummification system.

Background

Usually, the water-containing sludge or biogas residues have large volume and are inconvenient to transport or carry out harmless treatment. The prior art mostly carries out drying to reduce the volume and then carries out subsequent treatment.

The belt type dryer can be used for drying sludge or biogas residues in a similar sludge state, and the main working flow is to disperse and form the sludge or the biogas residues and then convey the sludge or the biogas residues into the dryer with a plurality of layers of conveying belts so as to realize the drying treatment of the sludge or the biogas residues. If the utility model discloses a grant publication number is CN 217127243U's utility model patent, disclose a dirty belt formula mummification equipment for sludge drying, including the mummification case, the inside from the top down of mummification case rotates respectively and is connected with right transmission band and left transmission band, right transmission band and left transmission band all through mummification case outside drive motor back drive, right transmission band and left transmission band all are provided with the multilayer and crisscross distribution from top to bottom, dislocation distribution about left transmission band and the right transmission band, the structure is broken up in the setting of adjacent two-layer transmission band alternating position, still be provided with the fender outside breaking up the structure, this utility model discloses a break up the structure and realize also fully being mummified the mud of inlayer, the mummification efficiency has been improved. However, the broken-up structure is easily damaged by the gravity of the sludge because of continuous contact with the sludge.

Disclosure of Invention

The utility model discloses an improve sludge drying efficiency, provide a belt low temperature circulation dehumidification mummification system, this system improves sludge drying efficiency through the contact time who increases dry gas and mud, has avoided with mud direct contact loss spare part.

In order to realize the purpose, the technical scheme of the utility model is that:

belt low temperature cycle dehumidification mummification system, including the drying chamber, the drying chamber includes the drying chamber casing and sets up a plurality of conveyer belt in the drying chamber casing, and the conveyer belt includes the right conveyer belt that is close to the left conveyer belt of drying chamber casing and is close to drying chamber casing right side, left side conveyer belt and right conveyer belt set gradually under from last, and the right side of left side conveyer belt and the left side of right conveyer belt are provided with the deep bead, the deep bead include horizontal baffle and with horizontal baffle fixed connection's cowl, horizontal baffle and drying chamber casing fixed connection for block gaseous from the direct upward movement of horizontal baffle department, cowl's arcwall face is towards the conveyer belt.

An air inlet pipe is arranged below the conveying belt, an inlet air distribution plate is arranged at the top of the air inlet pipe, and air inlet holes are formed in the inlet air distribution plate and used for introducing air in the air inlet pipe into the drying chamber shell; the air outlet pipe is arranged above the conveying belt, the bottom of the air outlet pipe is provided with a plurality of outlet air distribution plates, and air outlet holes are formed in the outlet air distribution plates and used for discharging dried air from the drying chamber shell.

As a further preferable scheme, a sludge forming machine is arranged above the drying chamber shell, a discharge port of the sludge forming machine is arranged corresponding to a feed port of the drying chamber, and the feed port of the drying chamber is positioned above the conveyer belt.

One end of the conveyer belt positioned at the lowest part is provided with a discharge conveyer belt, and the discharge conveyer belt is arranged corresponding to a discharge hole of the drying chamber and used for conveying the dried sludge out of the drying chamber shell.

As a further preferred scheme, the belt type low-temperature circulating dehumidification drying system further comprises a heat pump assembly, the heat pump assembly is arranged adjacent to the drying chamber, and the heat pump assembly comprises a compressor, an evaporator, a condenser and a filter. The compressor is respectively connected with the evaporator and the condenser, the air outlet of the evaporator is connected with the air inlet of the condenser through a pipeline, and the air outlet of the condenser is connected with the air inlet pipe below the conveying belt; the air outlet pipe above the conveying belt is connected with the air inlet of the filter, and the air outlet of the filter is connected with the air inlet of the evaporator.

Furthermore, an air blower is arranged between the air outlet of the condenser and the air inlet pipe, and an induced draft fan is arranged between the air outlet pipe and the air inlet of the filter. In order to reduce the load on the filter downstream of the induced draft fan, a further filter is also provided upstream of the induced draft fan.

In addition, a tail gas discharge port is arranged on a pipeline between the induced draft fan and a filter at the downstream of the induced draft fan; the evaporator is also connected with a condensed water outlet pipe; a fresh air inlet is arranged on a pipeline between the evaporator and the condenser, and a filter is also arranged at the fresh air inlet in order to ensure the intake quality of the fresh air; a throttling device is also arranged between the evaporator and the condenser.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses set up the deep bead in one side of conveyer belt, this deep bead is connected with the three side of drying chamber casing, has blocked the upper and lower circulation of deep bead department gas, has increased gaseous flow path inside the belt dryer, and the dwell time of extension gas in the drying chamber casing provides drying efficiency.

Additionally, the utility model discloses be provided with the import grid plate of a monoblock bottom the drying chamber casing, be provided with a plurality of export grid plate at the top of drying chamber casing, should set up and make air inlet efficiency be higher than air-out efficiency, further prolonged gaseous dwell time in the drying chamber casing. In addition, the top of the drying chamber shell is provided with the outlet air distribution plate instead of directly arranging the movable equipment such as the axial flow fan and the like, so that the corrosion and scouring influence of damp-heat gas, dust and the like on the movable equipment is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a belt type low-temperature circulating dehumidification drying system.

Fig. 2 is a schematic structural view of a wind deflector.

Fig. 3 is a schematic structural diagram related to the discharge of the drying chamber in the embodiment of the present invention.

The reference numbers in the drawings are as follows: i represents a drying chamber; II represents a heat pump assembly; a represents a drying chamber feed inlet; b represents a discharge hole of the drying chamber; c represents a condensed water outlet pipe; d represents an exhaust emission outlet; e denotes a fresh air inlet; 1 denotes a sludge forming machine; 2 denotes an outlet air distribution plate; 3 denotes a first filter; 4 denotes an induced draft fan; 5 denotes a drying chamber housing; 6 denotes an inlet air distribution plate; 7 denotes an air inlet duct; 8 denotes a blower; 9 denotes a wind deflector; 10 denotes a second filter; 11 denotes an evaporator; 12 denotes a condenser; 13 denotes a compressor; 14 denotes a throttle device, 15 denotes a left conveyor belt, 16 denotes a right conveyor belt, 17 denotes a discharge conveyor belt, 18 denotes a discharge chute, and 19 denotes a discharge screw.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as shown in fig. 1, the belt type low-temperature circulation dehumidification drying system of this embodiment includes drying chamber I, drying chamber I includes drying chamber casing 5 and the three conveyer belt of setting in drying chamber casing 5, and the conveyer belt includes left conveyer belt 15 that is close to drying chamber casing 5 left side and right conveyer belt 16 that is close to drying chamber casing 5 right side, left side conveyer belt 15 and right conveyer belt 16 set gradually from last to down, and there is the space between the left end of left side conveyer belt 15 and the right-hand member of right conveyer belt 16 all and drying chamber casing 5 to make things convenient for gas to pass through. Arranged in the drying chamber housing 5 of the present embodiment in this order from top to bottom are a left conveyor belt 15, a right conveyor belt 16 and a left conveyor belt 15.

The right side of the left conveying belt 15 and the left side of the right conveying belt 16 are provided with wind shields 9, and the wind shields 9 comprise horizontal baffles and arc baffles fixedly connected with the horizontal baffles, as shown in fig. 2. The horizontal baffle is connected with three sides of the drying chamber shell 5 and used for preventing gas from directly moving upwards from the horizontal baffle, so that the flow path of the gas inside the belt type dryer is increased, and the retention time of the gas in the drying chamber shell 5 is prolonged. With the direction of fig. 1 as a reference direction, the horizontal baffle on the right side of the left conveyor belt 15 is fixedly connected with the right side, the front side and the back side of the drying chamber housing 5, the horizontal baffle on the left side of the right conveyor belt 16 is fixedly connected with the left side, the front side and the back side of the drying chamber housing 5, the arc-shaped surface of the arc-shaped baffle faces the conveyor belt, and the arc-shaped baffle can play a role of a mudguard. The wind deflector 9 is arranged so that the air which is led into the drying chamber housing 5 moves partly upwards through the gap of the conveyor belt and partly upwards in a zigzag pattern.

An air inlet pipe 7 is arranged below the conveying belt, the air inlet pipe 7 is positioned outside the drying chamber shell 5, the top of the air inlet pipe 7 and the bottom of the drying chamber shell 5 are provided with a whole inlet air distribution plate 6, and air inlet holes are formed in the inlet air distribution plate 6 and used for introducing air in the air inlet pipe 7 into the drying chamber shell 5; the top of conveyer belt is provided with out the tuber pipe, it is located drying chamber casing 5 outsidely to go out the tuber pipe, and the bottom of going out the tuber pipe, the top of drying chamber casing 5 are provided with three export grid plate 2, the exhaust vent has been seted up on the export grid plate 2 for discharge the gas after will drying from drying chamber casing 5. In this embodiment, the outlet air distribution plate 2 does not occupy all the area of the bottom of the air outlet pipe, so that the air inlet efficiency is higher than the air outlet efficiency, and the retention time of the air in the drying chamber shell 5 is prolonged. In addition, 2 even air-out of export grid plate guarantee that the inside velocity of flow of drying chamber casing 5 is stable, homogeneous, and the at utmost reduces the dust that the drying process was taken up by the air current, has reduced the wearing and tearing of dust to pipeline, equipment, has prolonged life.

The sludge forming machine 1 is arranged above the drying chamber shell 5, a discharge hole of the sludge forming machine 1 is arranged corresponding to a drying chamber feed inlet a, and the drying chamber feed inlet a is positioned above the conveying belt. One end of the conveyer belt positioned at the lowest part is connected with a discharge conveyer belt 17, and the discharge conveyer belt 17 is arranged corresponding to the discharge hole b of the drying chamber and is used for conveying the dried sludge out of the drying chamber shell 5. In this embodiment, the conveyer belt that is located the bottommost is left conveyer belt 15, and the right side of this left conveyer belt 15 is provided with ejection of compact conveyer belt 17, does not set up the deep bead because ejection of compact conveyer belt 17 can play the effect of part deep bead. The left end of the discharging conveyer belt 17 is lower than the right end of the left conveyer belt 15 at the bottom, so that the purpose of receiving the dried sludge can be met. As shown in fig. 3, the right end of the discharging conveyor belt 17 is connected with a discharging chute 18, the right end of the discharging chute 18 is provided with a discharging screw 19, the discharging port of the discharging chute 18 is located above the feeding port of the discharging screw 19, and the discharging port of the discharging chute 18 is in flexible connection with the feeding port of the discharging screw 19.

The belt type low-temperature circulating dehumidifying and drying system further comprises a heat pump assembly II, wherein the heat pump assembly II is arranged adjacent to the drying chamber I, and comprises a compressor 13, an evaporator 11, a condenser 12 and a filter. The compressor 13 is respectively connected with the evaporator 11 and the condenser 12, an air outlet of the evaporator 11 is connected with an air inlet of the condenser 12 through a pipeline, a fresh air inlet e is arranged on the pipeline between the evaporator 11 and the condenser 12, and a filter is further arranged at the fresh air inlet e to filter and adsorb dust and impurities in fresh air in order to ensure the air inlet quality of the fresh air. The evaporator 11 is also connected with a condensed water outlet pipe c; a throttling device 14 is further arranged between the evaporator 11 and the condenser 12, and the throttling device 14 is a throttling valve.

The air outlet of the condenser 12 is connected with the air inlet pipe 7 below the conveying belt, an air blower 8 is further arranged between the air outlet of the condenser 12 and the air inlet pipe 7, and the air blower 8 is located on the outer side of the drying chamber shell 5.

The air outlet pipe end above the conveying belt is connected with the first filter 3, the filtering material adopted by the first filter 3 is cotton cores, pressure detection devices (not shown in the figure) are arranged in the front and at the back of the first filter 3, the opportunity for replacing the first filter 3 can be judged according to the pressure difference of the first filter 3, and the rapid replacement can be realized under the condition of no stop. The low reaches of first filter 3 are connected with draught fan 4, and first filter 3 can reduce the harm to draught fan 4 of the dust that smugglies secretly in the damp and hot gas that comes out from drying chamber casing 5, prolongs the life of draught fan 4. The induced draft fan 4 is connected with the air inlet of the second filter 10 through a pipeline, and a tail gas discharge port d is arranged on the pipeline between the induced draft fan 4 and the second filter 10 and used for discharging partial tail gas so as to reduce the enrichment of volatile substances brought out from materials to be dried and avoid damaging downstream equipment; the tail gas discharge port d is connected with a deodorization system subsequently; the tail gas emission can be intermittently or constantly emitted and can be determined according to the process requirements. The second filter 10 is provided with activated carbon therein, which can effectively filter and adsorb dust, impurities, etc. in the gas. The air outlet of the second filter 10 is also connected with the air inlet of the evaporator 11.

The method for drying the sludge or the biogas residues by adopting the drying system comprises the following specific steps:

the dewatered sludge or biogas residues are firstly put into a sludge forming machine 1 for sludge forming processing. The formed sludge or biogas residues fall onto a conveying belt in the drying chamber shell 5 through a drying chamber feeding hole a. The materials are conveyed to the other end from one end of the conveying belt and then fall into the lower layer conveying belt, and the operation is carried out until the sludge or the biogas residues are dried, and then the materials are conveyed out from a discharge hole b of the drying chamber through a discharge conveying belt 17 and enter a subsequent working section. The conveyor belt in the drying chamber housing 5 is of a net structure, and the formed sludge particles cannot fall from the net holes. The conveyer belt of this embodiment is made of stainless steel or anticorrosive spraying Q235B material.

The temperature of the tail gas heated by the condenser 12 and a part of fresh air entering from the fresh air inlet e at the air outlet of the condenser 12 is about 80 ℃, the relative humidity content is about 5-10%, and the gas for drying sludge or biogas residue enters the blower 8 and then is conveyed into the air inlet pipe 7. The drying gas is uniformly introduced into the bottom of the drying chamber housing 5 through the inlet distribution plate 6 at the top of the air inlet pipe 7. Wherein, the deep bead 9 prevents that drying gas from short circuit (follow conveyer belt both ends upward movement promptly) in drying chamber casing 5, and the at utmost guarantees gaseous and treats that dry material is adverse current, comprehensive contact, improves drying efficiency.

After the drying gas enters the drying chamber shell 5, a part of the drying gas moves upwards through the gaps of the conveying belt, and a part of the drying gas moves upwards in a Z shape, namely the drying gas enters the top conveying belt from the bottom conveying belt through the meshes at the bottom of the conveying belt and the reserved air openings. The material on the conveyer belt is contacted in a counter-current way through the meshes of the conveyer belt, the moisture in the material is taken away, and the dry material is sent out of the drying chamber shell 5.

The gas absorbing moisture in the drying chamber shell 5 has a temperature of about 55 ℃ and a relative moisture content of about 80%, enters the air outlet pipe through the outlet air distribution plate 2, passes through the first filter 3, filters dust in the gas, and then is sent into the second filter 10 through the induced draft fan 4. The moist hot gas is filtered again and then enters the evaporator 11. In the evaporator 11, the temperature of the damp and hot gas is reduced, and the water carried in the gas is analyzed and discharged through a condensed water outlet pipe c. Then the gas with low temperature and low moisture content enters the condenser 12 to be heated, the temperature is raised, the humidity is unchanged, and the gas enters the drying chamber shell 5 to be used for drying materials such as sludge or biogas residues. The moisture in the material is taken out by the drying gas to form damp-heat gas, and the damp-heat gas is cooled, dehumidified and heated by the heat pump system and then enters the drying chamber shell 5 to be dried.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. Belt type low-temperature circulating dehumidification and drying system comprises a drying chamber (I), wherein the drying chamber (I) comprises a drying chamber shell (5) and a plurality of conveying belts arranged in the drying chamber shell (5), the conveying belts comprise a left conveying belt (15) close to the left side of the drying chamber shell (5) and a right conveying belt (16) close to the right side of the drying chamber shell (5), the left conveying belt (15) and the right conveying belt (16) are sequentially arranged from top to bottom, and the belt type low-temperature circulating dehumidification and drying system is characterized in that the right side of the left conveying belt (15) and the left side of the right conveying belt (16) are provided with wind shields (9), each wind shield (9) comprises a horizontal baffle and an arc-shaped baffle fixedly connected with the horizontal baffle, the horizontal baffle is fixedly connected with the drying chamber shell (5), and the arc-shaped surface of each arc-shaped baffle faces towards the conveying belts;

an air inlet pipe (7) is arranged below the conveying belt, an inlet air distribution plate (6) is arranged at the top of the air inlet pipe (7), and air inlet holes are formed in the inlet air distribution plate (6); the air outlet pipe is arranged above the conveying belt, the bottom of the air outlet pipe is provided with a plurality of outlet air distribution plates (2), and air outlet holes are formed in the outlet air distribution plates (2).

2. The belt type low-temperature circulating dehumidification and drying system of claim 1, wherein a sludge forming machine (1) is arranged above the drying chamber shell (5), a discharge port of the sludge forming machine (1) is arranged corresponding to a drying chamber feed port (a), and the drying chamber feed port (a) is arranged above the conveying belt.

3. The belt type low-temperature circulating dehumidification and drying system as claimed in claim 1, wherein a discharge conveyor belt (17) is disposed at one end of the lowermost conveyor belt, and the discharge conveyor belt (17) is disposed corresponding to the discharge port (b) of the drying chamber.

4. The belt type low-temperature circulating dehumidification drying system according to claim 1, further comprising a heat pump assembly (II) comprising a compressor (13), an evaporator (11), a condenser (12) and a filter; the compressor (13) is respectively connected with the evaporator (11) and the condenser (12), the air outlet of the evaporator (11) is connected with the air inlet of the condenser (12) through a pipeline, and the air outlet of the condenser (12) is connected with the air inlet pipe (7) below the conveying belt; an air outlet pipe above the conveying belt is connected with an air inlet of the filter, and an air outlet of the filter is connected with an air inlet of the evaporator (11).

5. The belt type low-temperature circulating dehumidification and drying system as claimed in claim 4, wherein an air blower (8) is arranged between the air outlet of the condenser (12) and the air inlet pipe (7), and an induced draft fan (4) is arranged between the air outlet pipe and the air inlet of the filter; a filter is also arranged at the upstream of the induced draft fan (4).

6. The belt type low-temperature circulating dehumidification and drying system as claimed in claim 5, wherein a tail gas discharge port (d) is arranged on a pipeline between the induced draft fan (4) and a filter at the downstream of the induced draft fan (4).

7. The belt type low-temperature circulating dehumidification and drying system according to claim 4, wherein a condensed water outlet pipe (c) is further connected to the evaporator (11).

8. The belt type low-temperature circulating dehumidification-drying system according to claim 4, wherein a fresh air inlet (e) is arranged on a pipeline between the evaporator (11) and the condenser (12), and a throttling device (14) is arranged between the evaporator (11) and the condenser (12).

9. The belt type low temperature circulating dehumidification drying system according to claim 8, wherein a filter is further provided at the fresh air inlet (e).