CN218435498U

CN218435498U - Air distribution plate structure and sludge fluidized bed drying machine using same

Info

Publication number: CN218435498U
Application number: CN202221947811.9U
Authority: CN
Inventors: 钱晋; ***; 蒋岳盘; 钱重羽; 杭兵; 张田明
Original assignee: Jiangsu Zhongding Environment Engineering Share Co ltd
Current assignee: Jiangsu Zhongding Environment Engineering Share Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-02-03
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a grid plate structure and sludge fluidized bed drier using the grid plate structure, which comprises a grid plate body and a hood arranged on the grid plate body, wherein the hood comprises a lower half body and an upper half body which are connected with each other, a lower through hole and an upper through hole which are used for ventilation are arranged on the periphery of the upper half body, the grid plate structure also comprises an adjusting plate, the upper end of the adjusting plate is hinged on the upper wall of the upper through hole, and the lower end of the adjusting plate extends to the lower wall of the upper through hole; an elastic piece is arranged at the inlet end of the upper through hole, and the other end of the elastic piece is fixedly connected with an adjusting plate, so that the adjusting plate always tends to rotate inwards; the inlet end of the upper through hole is provided with a stop surface for preventing the adjusting plate from rotating inwards; the upper wall of going up the through-hole is provided with accommodation space, and the regulating plate can be accomodate in accommodation space when receiving the pressure of wind and outwards rotating. The utility model discloses a ventilation hole can follow amount of wind automatically regulated, keeps the wind resistance that the hood received stable, reduces undulant, vibrations to keep the stability of mummification machine.

Description

Air distribution plate structure and sludge fluidized bed drying machine using same

Technical Field

The utility model relates to a grid plate and mummification machine specifically are a grid plate structure and use sludge fluidized bed mummification machine of this grid plate structure.

Background

Sludge drying was originally developed in the twentieth century and the forty years, and through decades of development, the advantages of sludge drying are gradually shown. Compared with wet sludge, the dried sludge can greatly reduce the volume, thereby reducing the storage space. Taking wet sludge with the water content of 60% as an example, when the wet sludge is dried to the water content of 30%, the volume can be reduced by nearly 1 time; forming a stable product in particle or powder form, so that the shape of the sludge is greatly improved; the final product is odorless and free of pathogens, the related negative effects of the sludge are reduced, and the treated sludge is more easily accepted; the dried sludge with high calorific value can also replace energy, thereby changing waste into valuable.

The sludge drying process aims at realizing the reduction of sludge, improving low-grade heat value, removing a large amount of water in the sludge and saving the cost of subsequent process treatment. Due to the reduction of the water vapor content, the method brings the advantages of reduction of treatment difficulty, increase of efficiency, reduction of size and model selection of equipment and the like for subsequent processes.

In the fluidized bed sludge drying machine, circulating gas enters from a bottom air chamber of the fluidized bed sludge drying machine under the action of a fan, so that internal wet sludge particles and materials generate a fluidization effect. The heat exchange coil is arranged in the drying machine to provide heat energy for drying wet sludge, the wet sludge particles generate sufficient heat exchange with the heat exchange tube bundle in a fluidized state, and the wet sludge finally forms dry sludge particles.

The air chamber is provided with the air distribution plate for conveying circulating gas, and the air distribution plate used at present is of a uniform specification and cannot be adjusted along with the air quantity because the air quantity of the circulating gas is changed according to the sludge quantity, so that the resistance of the fluidization hood of the air distribution plate cannot be adjusted, the air distribution plate is fluctuated and vibrated, and the drying machine is vibrated and unstable.

SUMMERY OF THE UTILITY MODEL

For solving the defect of the prior art, the utility model provides a cloth wind plate structure and use sludge fluidized bed mummification machine of this cloth wind plate structure, the utility model discloses a ventilation hole can follow amount of wind automatically regulated, and the wind resistance that keeps the hood to receive is stable, reduces undulant, vibrations to keep the stability of mummification machine.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: a wind distribution plate structure comprises a wind distribution plate body and a wind cap arranged on the wind distribution plate body, wherein the wind cap comprises a lower half body and an upper half body which are connected with each other, a lower through hole and an upper through hole which are used for ventilation are formed in the periphery of the upper half body, the wind distribution plate structure also comprises an adjusting plate, the upper end of the adjusting plate is hinged to the upper wall of the upper through hole, and the lower end of the adjusting plate extends to the lower wall of the upper through hole;

an elastic piece is arranged at the inlet end of the upper through hole, and the other end of the elastic piece is fixedly connected with the adjusting plate, so that the adjusting plate always tends to rotate inwards;

the inlet end of the upper through hole is provided with a stop surface for preventing the adjusting plate from rotating inwards;

the upper wall of going up the through-hole is provided with accommodation space, the regulating plate receives the pressure of wind and can accomodate when external rotation in the accommodation space.

Furthermore, the lower half body and the upper half body are embedded in the air distribution plate body, and the upper end of the upper half body is exposed.

The upper cap is arranged at the top end of the upper half body, a groove is formed in the peripheral wall of the top end of the upper half body, and the upper through hole is formed between the peripheral wall of the lower end of the upper cap and the groove.

Further, the accommodating space is provided in a lower end peripheral wall of the upper cap.

Further, the upper wall of the accommodating space is an inclined surface.

Further, the upper cap has an outer circumferential diameter larger than that of the upper half body such that the upper cap is provided with a visor.

Further, the upper end of the adjusting plate is hinged to the stop surface.

Further, the elastic member is a spring.

The sludge fluidized bed drying machine comprises an air chamber base, a convection heat exchange section, a material inlet section and an air suction cover which are connected in sequence, wherein an air distribution plate structure is arranged between the air chamber base and the convection heat exchange section.

The sludge drying device further comprises a discharge port, a sludge feeding device and a sludge scattering device, wherein the discharge port is formed in the side face of the air chamber base, the sludge feeding device is arranged in the material inlet section, and the sludge scattering device is arranged in the material inlet section and is located below the sludge feeding device.

To sum up, the utility model discloses following technological effect has been gained:

1. the utility model discloses set up the regulating plate of regulation ventilation hole size in a ventilation hole of hood, utilize the regulating plate to adjust the resistance that the hood received, keep the stability of resistance to keep the stability of grid plate, thus guarantee the stability of desiccator, another ventilation hole does not set up the regulating plate, is used for guaranteeing that the amount of wind also has the ventilation hole to ventilate when hour;

2. the utility model discloses the mummification machine has low investment cost, and energy utilization is rateed highly, pollutes for a short time, installs advantages such as swift in traditional mummification machine.

Drawings

Fig. 1 is a schematic cross-sectional view of a hood according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of the minimum state of FIG. 1;

FIG. 3 is an enlarged partial schematic view of the maximum state of FIG. 1;

FIG. 4 is a side view of the drying machine;

fig. 5 is another side view of the dryer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The embodiment is as follows:

as shown in fig. 1, an air distribution plate structure includes an air distribution plate body 8 (shown in fig. 5) and an air cap 9 (shown in fig. 5) disposed on the air distribution plate body 8, as shown in fig. 1, the air cap 9 includes a lower half 901 and an upper half 902 connected to each other, and a lower through hole 903 and an upper through hole 904 for ventilation are formed in the periphery of the upper half 902, and are used for conveying air from an air chamber to the inside of a drying machine.

Specifically, as shown in fig. 1, the lower half 901 and the upper half 902 are embedded in the grid plate body 8 for ensuring the stability of the wind cap, and the upper end of the upper half 902 is exposed for providing the lower through hole 903 and the upper through hole 904.

As shown in fig. 1, the portable electronic device further includes an upper cap 909, the upper cap 909 is disposed at the top end of the upper half body 902, the connection mode may be glue connection, bolt connection, and so on, in combination with fig. 2, and a slot is formed on the peripheral wall of the top end of the upper half body 902, and an upper through hole 904 is formed between the peripheral wall of the lower end of the upper cap 909 and the slot. As shown in FIG. 2, the upper end of the upper half 902 is provided with a plurality of slots communicating with the inside, and the slots form an upper through hole 904 by using the bottom wall of the upper cap as the upper wall.

The upper end of the adjusting plate 905 is hinged to the upper wall of the upper through hole 904, and the lower end of the adjusting plate 905 extends to the lower wall of the upper through hole 904; when the adjusting plate 905 is pressed by internal wind, the adjusting plate 905 rotates outwards, so that the vertical state in fig. 2 slowly changes into an expansion state until the adjusting plate 905 is attached to the upper cap 909 outwards, a state shown in fig. 3 is formed, the state in fig. 2 is a ventilation state with the smallest upper through hole 904, the state in fig. 3 is a ventilation state with the largest upper through hole 904, the outward rotation angle of the adjusting plate 905 can adjust the ventilation opening and the ventilation amount of the upper through hole 904, wind distribution capable of automatically adjusting along with the wind volume is achieved, resistance of the wind cap is stable, and stability of the wind distribution plate is maintained.

As shown in fig. 2, an elastic member 907 is disposed at the inlet end of the upper through hole 904, in this embodiment, the elastic member 907 is a spring, and the other end of the elastic member 907 is fixedly connected to the adjusting plate 905 such that the adjusting plate 905 always tends to rotate inwards; when the air volume is small, the wind force is not enough to open the adjusting plate 905, at the moment, the adjusting plate 905 keeps the original state unchanged under the action of the elastic piece, the wind passes through the lower through hole 903 and passes through the vent hole in the minimum state of the upper through hole 904, when the air volume is gradually increased, the wind force is enough to open the adjusting plate 905, at the moment, the adjusting plate 905 overcomes the elasticity of the elastic piece and rotates outwards for a certain angle under the action of the wind force, the wind passes through the lower through hole 903 and passes through the vent hole in the opened upper through hole 904, when the air volume is continuously increased, the adjusting plate 905 rotates outwards to the maximum angle and is attached to the upper wall of the upper through hole 904, as shown in fig. 3, at the moment, the upper through hole 904 is in the maximum ventilation state.

As shown in fig. 3, the inlet end of the upper through hole 904 is provided with a stop surface 908 for preventing inward rotation of the adjustment plate 905; the upper end of the adjustment plate 905 is hinged to the stop surface 908. The stop face 908 ensures that the adjustment plate 905 does not rotate inward, and the adjustment plate vertically blocks dregs from entering when the air volume is kept to be minimum.

Further, the lower end of the adjusting plate 905 may be proximate to the lower wall of the upper through hole 904 in the minimum state shown in fig. 2, or may be non-proximate, which is a non-proximate illustration shown in fig. 2.

The upper wall of the upper through hole 904 is provided with an accommodating space 9091, and the adjusting plate 905 can be accommodated in the accommodating space 9091 when being rotated outwards under the pressure of wind. When the air volume is large enough to force the adjusting plate 905 to be screwed outwards to the maximum state, the adjusting plate 905 is accommodated in the accommodating space 9091, and the vent hole at the moment is the maximum vent hole of the upper through hole 904.

The accommodating space 9091 is provided in the outer peripheral wall of the lower end of the upper cap 909, and the upper wall of the accommodating space 9091 is inclined so as to accommodate the maximum adjustment plate 905.

The outer diameter of the upper cap 909 is larger than the outer diameter of the upper half 902, so that the upper cap 909 has a brim 9090 to block a part of the dross.

As shown in fig. 4 and 5, a sludge fluidized bed dryer comprises an air chamber base 1, a convection heat exchange section 2, a material inlet section 3 and an air suction cover 4 which are connected in sequence, wherein an air distribution plate structure is arranged between the air chamber base 1 and the convection heat exchange section 2.

The sludge drying device further comprises a discharge port 5, a sludge feeding device 12 and a sludge scattering device 11, wherein the discharge port 5 is arranged on the side surface of the air chamber base 1, the sludge feeding device 12 is arranged on the material entering section 3, and the sludge scattering device 11 is arranged on the material entering section 3 and is positioned below the sludge feeding device 12.

The sludge fluidized bed dryer in the embodiment mainly structurally comprises an air chamber base 1, a convection heat exchange section 2, a material inlet section 3, an air suction cover 4, a dry sludge discharging pipe 5, a sludge feeding device 12 and a sludge scattering device 11.

Compared with the traditional drier, the drier in the embodiment has the advantages of low investment cost, high energy utilization rate, low pollution, quick installation and the like.

In the embodiment, the chamber of the air chamber base 1 is divided into four independent air chambers by partition plates, an air inlet is arranged at the lower part, and independent air quantity and air pressure regulation is realized by air regulating doors respectively arranged on the system. A plurality of maintenance cleaning doors 7 are reserved between the air distribution plate and the gap at the upper edge of the air chamber. A dry sludge discharging pipe 5 is arranged on one side of the air chamber. The base of the air chamber and the convection heat exchange section are separated by an air distribution plate, and air caps which are arranged in order are arranged on the air distribution plate.

The convection heat exchange section 2 consists of a shell and five groups of tube bundle type heat exchangers 10 which are respectively transported to the site for assembly, and can also realize rapid replacement. The casing is rectangle box structure, and the position of installation heat exchanger is reserved to a side wall board, and inside is equipped with vaulting pole and strengthening rib. The convection heat exchange is provided with a tube bundle type heat exchanger and is filled with bed materials.

The tube material of the tube type heat exchanger is made of 022Cr17Ni12Mo2, is resistant to corrosion and abrasion, and is sprayed with an abrasion-resistant layer on the surface. The areas of the two ends of the pipe where vortex flows are easy to generate are provided with the air breaking plates, measures such as wear-resisting plates are arranged at the positions of welding seams which are easy to wear, and the safe and stable operation of the equipment within a long time can be effectively ensured. Independent disassembly and assembly can be realized for each group of heat exchangers, and great convenience is provided for subsequent overhaul and maintenance.

The material entering section 3 is of a rectangular box-type structure, a sludge inlet is reserved in a side wall plate, in order to prevent sludge from being agglomerated after entering the drying machine and affecting the fluidization effect, the sludge scattering device 11 is arranged below the sludge inlet, so that sludge can be uniformly exchanged with the heat exchange tubes at the lower part, and the drying speed is improved. Two access doors are reserved on the opposite side of the feeding hole. A waste gas inlet is formed above the discharge port of the air chamber base and communicated with the discharge port, and waste gas brought out during discharging is connected into a negative pressure area of the drying machine through the inlet, so that the waste gas is prevented from overflowing. The material inlet section is provided with a tube bundle type heat exchanger and is filled with bed materials.

The air suction cover 4 is of a vault rectangular box type structure, the end of the air suction cover is a dried negative pressure area, and the air suction cover section is connected with a fan to ensure negative pressure. High-humidity waste gas and dust generated by drying are concentrated in the area. The air outlet is arranged on the side surface of the box body, and pressure and temperature measuring points are arranged on the periphery of the air outlet.

After steam is drained, hot water is also introduced into the coil pipe at the tail end of the drying machine through the circulating pump, so that the dried sludge is fully utilized by the waste heat, and the heat introduced into the drying machine is fully utilized.

Referring to fig. 2, wet sludge is fed from a feeding port on one side of the dryer through a feeding device, is scattered by a sludge scattering device 11 below, is fully mixed with a fluidized quartz sand bed material blown by high-temperature flue gas in the convection heat exchange section 2, and is subjected to heat exchange and drying with a steam coil 10 arranged in the convection heat exchange section. The sludge dried to 35-45% of water content directly overflows out through an overflow port at the side end.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a grid plate structure, includes grid plate body (8) and locates hood (9) on grid plate body (8), hood (9) are including interconnect's lower half (901) and first half (902), lower through-hole (903) and last through-hole (904) that are used for the ventilation are offered to the periphery of first half (902), its characterized in that:

the upper end of the adjusting plate (905) is hinged to the upper wall of the upper through hole (904), and the lower end of the adjusting plate (905) extends to the lower wall of the upper through hole (904);

an elastic piece (907) is arranged at the inlet end of the upper through hole (904), and the other end of the elastic piece (907) is fixedly connected with the adjusting plate (905) so that the adjusting plate (905) always tends to rotate inwards;

the inlet end of the upper through hole (904) is provided with a stop surface (908) for preventing the adjusting plate (905) from rotating inwards;

the upper wall of going up through-hole (904) is provided with accommodation space (9091), regulating plate (905) receive the pressure of wind and can accomodate when outwards revolving in accommodation space (9091).

2. A wind distribution plate structure according to claim 1, wherein: the lower half body (901) and the upper half body (902) are embedded in the grid plate body (8), and the upper end of the upper half body (902) is exposed.

3. A wind distribution plate structure according to claim 2, wherein: the upper half body (902) is provided with an upper through hole (904), the upper cap (909) covers the top end of the upper half body (902), a notch is formed in the peripheral wall of the top end of the upper half body (902), and the upper through hole (904) is formed between the peripheral wall of the lower end of the upper cap (909) and the notch.

4. A wind distribution plate structure according to claim 3, wherein: the accommodating space (9091) is formed in the outer peripheral wall of the lower end of the upper cap (909).

5. A wind distribution plate structure according to claim 4, wherein: the upper wall of the accommodating space (9091) is an inclined surface.

6. A wind distribution plate structure according to claim 5, wherein: the upper cap (909) has an outer peripheral diameter larger than that of the upper half (902), so that the upper cap (909) has a visor (9090).

7. A grid construction according to claim 4 wherein: the upper end of the adjusting plate (905) is hinged on the stop surface (908).

8. A grid construction according to claim 7 wherein: the elastic member (907) is a spring.

9. A sludge fluidized bed drier is characterized in that: the air distribution plate structure comprises an air chamber base (1), a convection heat exchange section (2), a material inlet section (3) and an air suction cover (4) which are sequentially connected, wherein the air distribution plate structure as claimed in any one of claims 1 to 8 is arranged between the air chamber base (1) and the convection heat exchange section (2).

10. The sludge fluidized bed dryer as claimed in claim 9, wherein: the air chamber is characterized by further comprising a discharge hole (5), a sludge feeding device (12) and a sludge scattering device (11), wherein the discharge hole (5) is formed in the side face of the air chamber base (1), the sludge feeding device (12) is arranged in the material inlet section (3), and the sludge scattering device (11) is arranged below the material inlet section (3) and located below the sludge feeding device (12).