CN220834145U - Bridge type sieve plate fixed bed - Google Patents

Abstract

The utility model discloses a bridge type sieve plate fixed bed, relates to the technical field of food drying, and solves the problems that the existing fixed bed sieve plate cannot stably reduce water content and granularity in production and has poor boiling effect. The utility model comprises a material chamber, a sieve plate, a ventilation chamber, a discharging chamber and an air duct, wherein the air duct is connected with the ventilation chamber; the upper end of the ventilation chamber is connected with the material chamber, and a sieve plate is arranged between the ventilation chamber and the material chamber; the right side of the material chamber is connected with the discharge chamber; the sieve plate is provided with a plurality of sieve holes, the sieve holes are in a bottle shape, the sieve holes comprise a first outlet and a second outlet, and the width of the first outlet is smaller than that of the second outlet. According to the utility model, the sieve holes are arranged in a vase shape with narrow front and wide rear, two adjacent rows of sieve holes are staggered, a certain included angle is formed between the sieve hole axes of the two adjacent rows, and meanwhile, the arrangement of the sieve holes is adjusted to enable the inlet air to be in a rotating state in the material chamber, so that the boiling fluidization and powder discharge continuity are improved, the water content of the material and the conditions required by continuous production are reduced, and the operation of the drying equipment is more stable and effective.

Description

Bridge type sieve plate fixed bed

Technical Field

The utility model relates to the technical field of food drying, in particular to a bridge type sieve plate fixed bed.

Background

Spray drying towers are equipment used for drying biological pesticides, medicines, food microorganisms. The spray drying is a drying process in which the raw material liquid is put into an atomizer to be separated into mist drops, and the powder particle-shaped product is obtained by directly contacting hot air or other gases with the mist drops. Most of drying towers in the existing industry are not provided with fixed bed devices, and the difficulty is that the existing sieve plate type cannot meet the factors of stably reducing water, granularity, boiling effect, continuous production and the like in production.

In order to solve the problems in the prior art and reduce the overall design cost of the production line of the drying tower, a novel screen plate is required to be provided to realize the effects of reducing water content, boiling, agglomerating and continuously discharging powder of the static bed.

Disclosure of utility model

The utility model provides a bridge type sieve plate fixed bed, which aims to solve the problems that the existing fixed bed sieve plate can not stably reduce water content and granularity in production and has poor boiling effect and can not realize continuous production. According to the utility model, the sieve holes are arranged in a vase shape with narrow front and wide rear, two adjacent rows of sieve holes are staggered, a certain included angle is formed between the sieve hole axes of two adjacent rows, and meanwhile, the arrangement of the sieve holes on the sieve plate is adjusted to enable the inlet air to be in a rotating state in the material chamber, so that the boiling fluidization and powder discharge continuity of a static bed or a fluidized bed are effectively improved, the water content of the material and the continuous production condition are reduced, and the whole drying equipment can operate more stably and effectively.

The utility model provides a bridge type sieve plate fixed bed, which specifically comprises a material chamber, a sieve plate, a ventilation chamber, a discharge chamber and an air duct, wherein the air duct is connected with the ventilation chamber; the upper end of the ventilation chamber is connected with the material chamber, and a sieve plate is arranged between the ventilation chamber and the material chamber; the right side of the material chamber is connected with the discharge chamber; the sieve plate is provided with a plurality of sieve holes, the sieve holes are in a bottle shape and are bilaterally symmetrical, the sieve plate comprises a first outlet and a second outlet, and the width of the first outlet is smaller than that of the second outlet.

Further, the screen plate comprises four screen plates I, four screen plates II, four screen plates III and a screen plate IV, wherein the screen plate I is a right-angle triangular plate with a sloping side being an outward convex curve; the second sieve plate is a curved Bian Zhijiao trapezoid plate with a sloping side being a convex curve; the third sieve plate is a square plate; the fourth sieve plate is a rectangular plate; the first sieve plate and the second sieve plate are spliced alternately clockwise to form an outer frame structure of the sieve plate, and four sieve plates and three sieve plates are spliced in the center of the outer frame structure to form a circular sieve plate main body; the fourth sieve plate is connected to the edge of the outer frame structure.

Further, a plurality of sieve holes at the bent edges of the first sieve plate and the second sieve plate are arranged along the edges, and a plurality of sieve holes at the other positions are distributed in rows; a plurality of sieve holes on the third sieve plate and the fourth sieve plate are distributed in rows; a plurality of sieve holes distributed in rows are arranged between two adjacent rows in a staggered way.

Further, the axes of the sieve holes in the same row on the first sieve plate, the second sieve plate, the third sieve plate or the fourth sieve plate are parallel to each other, and the included angle between the axes of the sieve holes in two adjacent rows is 60 degrees.

Further, the length of the sieve holes is 22mm, the width of the first outlet is 8mm, and the width of the second outlet is 15mm.

Still further, the maximum height between the inner surface of the screen mesh and the screen deck is 1.5mm.

Further, a manhole is arranged on both the material chamber and the ventilation chamber.

Further, a receiving groove is arranged above the material chamber.

Further, a discharging square viewing mirror is arranged on the discharging chamber.

Further, a ventilation regulating valve is arranged in the air duct.

The bridge type sieve plate fixed bed has the beneficial effects that:

(1) According to the bridge type sieve plate fixed bed, the sieve holes on the sieve plate are arranged into a vase shape with narrow front and wide rear, a plurality of sieve holes are arranged on the sieve plate in an array mode, the sieve holes of two adjacent rows are arranged in a staggered mode, and a certain included angle is formed between the sieve hole axes of the two adjacent rows, so that a one-way air outlet mode of the sieve holes on the traditional sieve plate is broken, and a two-way air outlet mode is changed into a two-way row air outlet mode; meanwhile, through arrangement of the directions of the sieve holes, the outer ring of the sieve plate generates air flow in the clockwise direction as a whole, and the inner ring generates air flow in the anticlockwise direction as a whole, so that the boiling fluidization and powder discharge continuity of a static bed or a fluidized bed is effectively improved, the water content of materials and continuous production conditions are reduced, and the whole drying equipment can operate more stably and effectively;

(2) According to the bridge type sieve plate fixed bed, the round edge of the sieve plate is provided with the circle of sieve holes with the outlets facing clockwise, so that the problems of material storage at the outermost ring and difficult boiling flow of the conventional fixed sieve plate are solved, and the fixed bed has the rotary blowing function of the outermost ring circle;

(3) According to the bridge type sieve plate fixed bed, the integral height is reduced by adding the fixed bed equipment consisting of the asymmetric bridge type sieve plates when the whole production line of the drying tower is designed, so that a large amount of construction cost can be saved when manufacturing the production line factory buildings and the drying tower after the height is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In the drawings:

FIG. 1 is a schematic diagram of a bridge type sieve plate fixed bed according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the mesh of a bridge type sieve plate fixed bed according to the present utility model;

FIG. 3 is a left side view of the screen holes of a bridged type screen plate fixed bed according to the present utility model;

FIG. 4 is a right side view of the screen holes of a bridged type screen plate fixed bed according to the present utility model;

FIG. 5 is a schematic diagram of a first screen plate of a bridge type screen plate fixed bed according to the present utility model;

FIG. 6 is a schematic diagram of a second screen plate of a bridge type screen plate fixed bed according to the present utility model;

FIG. 7 is a schematic diagram of a third screen plate of a bridge type screen plate fixed bed according to the present utility model;

FIG. 8 is a schematic diagram of a fourth screen plate of a bridge type screen plate fixed bed according to the present utility model;

FIG. 9 is a schematic diagram of the structure of a screen plate of a bridge-type screen plate fixed bed according to the present utility model;

FIG. 10 is a schematic diagram of a screen plate wind direction flow of a bridged screen plate fixed bed according to the present utility model;

FIG. 11 is a schematic diagram of the edge structure of a screen plate of a bridged screen plate fixed bed according to the present utility model;

Wherein: 1-material chamber, 2-screen plate, 21-screen plate I, 22-screen plate II, 23-screen plate III, 24-screen plate IV, 3-manhole, 4-ventilation chamber, 5-discharge chamber, 51-discharge square view mirror, 6-air duct, 61 ventilation regulating valve, 7-screen hole, 71-outlet I, 72-outlet II.

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

The first embodiment is as follows: the present embodiment is specifically described with reference to fig. 1 to 11. The bridge type sieve plate fixed bed specifically comprises a material chamber 1, a sieve plate 2, a ventilation chamber 4, a discharging chamber 5 and an air duct 6, wherein the air duct 6 is connected with the ventilation chamber 4; the upper end of the ventilation chamber 4 is connected with the material chamber 1, and a sieve plate 2 is arranged between the ventilation chamber 4 and the material chamber 1; the right side of the material chamber 1 is connected with a discharge chamber 5; the sieve plate 2 is provided with a plurality of sieve holes 7, the sieve holes 7 are in a shape similar to a vase with narrow front and wide rear, and are bilaterally symmetrical, the sieve plate comprises a first outlet 71 and a second outlet 72, and the width of the first outlet 71 is smaller than that of the second outlet 72; the sieve holes 7 are of arc-shaped design from the first outlet 71 to the second outlet 72, and the first outlet 71 is in smooth transition with the second outlet 72. The sieve holes 7 on the sieve plate 2 are formed by stamping through a die.

As shown in fig. 9, the screen plate 2 includes four screen plates one 21, four screen plates two 22, four screen plates three 23 and four screen plates four 24, and the screen plate one 21 is a right-angle triangle plate with a sloping side being a convex curve; the second sieve plate 22 is a curved Bian Zhijiao trapezoid plate with a sloping side which is a convex curve; the third sieve plate 23 is a square plate; the fourth sieve plate 24 is a rectangular plate; the first sieve plate 21 and the second sieve plate 22 are spliced alternately clockwise to form an outer frame structure of the sieve plate 2, and four third sieve plates 23 are spliced in the center of the outer frame structure to form a circular sieve plate main body; the fourth sieve plate 24 is connected to the edge of the outer frame structure.

The first sieve plate 21 and the second sieve plate 22 are provided with a plurality of sieve holes 7 at the bent edges along the edges, and the outlets 72 of the sieve holes 7 arranged on the bent edges are consistent in the direction; the sieve holes 7 at the other positions are distributed in rows; a plurality of sieve holes 7 on the third sieve plate 23 and the fourth sieve plate 24 are distributed in rows; a plurality of sieve holes 7 distributed in rows are staggered between two adjacent rows. The outer frame structure of the screen plate 2 is formed by splicing the screen plate I21 and the screen plate II 22, and the outlets II 72 of the screen holes 7 arranged on the outer frame structure are oriented in a clockwise direction, so that the whole air flowing direction of the area corresponding to the outer frame structure of the screen plate 2 in the material chamber 1 is in the clockwise direction; the outlets 72 of the plurality of sieve holes 7 arranged on the left two sieve plates 3 are downward in the direction, and the outlets 72 of the plurality of sieve holes 7 arranged on the right two sieve plates 23 are upward in the direction, so that the overall air flowing direction of the area corresponding to the central position of the sieve plate 2 in the material chamber 1 is counterclockwise, as shown in fig. 10. And because be provided with a plurality of sieve meshes 7 on the bent limit edge of sieve 21 and sieve 22 two for circular sieve main part edge after the concatenation is accomplished is provided with round export two 72 and faces for sieve mesh 7 of clockwise, as shown in fig. 11, has improved the problem that current fixed sieve is most outer lane to deposit the material and be difficult for boiling flow through this round sieve mesh 7.

The axes of the sieve holes 7 in the same row on the first sieve plate 21, the second sieve plate 22, the third sieve plate 23 or the fourth sieve plate 24 are parallel to each other, and the included angle between the axes of the sieve holes 7 in two adjacent rows is 60 degrees. The distance between the center points of two adjacent sieve holes 7 in the same column is 27mm; the distance between the center points of two adjacent sieve holes 7 between two adjacent rows is 27mm.

The length of the sieve holes 7 is 22mm, the width of the first outlet 71 is 8mm, and the width of the second outlet 72 is 15mm.

The maximum height between the inner surface of the sieve mesh 7 and the sieve plate 2 is 1.5mm.

The material chamber 1 and the ventilation chamber 4 are provided with a manhole 3, and workers observe the conditions in the material chamber 1 and the ventilation chamber 4 through the manhole 3.

A receiving groove 8 is arranged above the material chamber 1, and materials enter the material chamber 1 from the receiving groove 8.

The discharging chamber 5 is provided with a discharging square view mirror 51, and a worker observes the discharging condition in the discharging chamber 5 through the discharging square view mirror 51.

The air duct 6 is internally provided with a ventilation regulating valve 61, and air intake is controlled by the ventilation regulating valve 61.

The specific use method of the bridge type sieve plate fixed bed provided by the utility model is explained as follows:

When in operation, the ventilation regulating valve 61 is opened, and air enters the ventilation chamber 4 from the air duct 6; at the same time, material enters the material chamber 1 from the receiving chute 8. At this time, the air flow enters the sieve holes 7 from the holes below the sieve plate 2, and the widths of the first outlet 71 and the second outlet 72 on the sieve holes 7 are different, so that the air flows at the positions of the first outlet 71 and the second outlet 72 are different, and the distribution ratio is about 8:15. When the air conditioner works, a plurality of sieve holes 7 are arranged in an array, after air flows out from the first outlet 71 and the second outlet 72 on the sieve holes 7, the air blown out from the first outlet 71 blows to the side face of the second outlet 72 of the sieve holes 7 close to the left side of the air conditioner, and the air flows from the side face of the adjacent sieve holes 7 to the first outlet 71 from the second outlet 72; the air blown out from the second outlet 72 is blown to the side surface of the first outlet 71 of the sieve opening 7 adjacent to the right side of the second outlet, and the wind flows from the side surface of the sieve opening 7 adjacent to the right side of the second outlet from the first outlet 71 to the second outlet 72; because the wind pressure causes and produces upward buoyancy simultaneously, the material falling on the sieve plate 1 can be better applied with power to move so that the upward wind pressure drives the boiling effect, the contact time of the wind and the material is increased, and the heat exchange is increased. The overall flow direction of the outer ring air of the screen plate 2 after the splicing is completed is clockwise, the overall flow direction of the air in the central area of the screen plate 2 is anticlockwise, and meanwhile, a plurality of screen holes 7 are formed in the edge of the outermost ring of the screen plate 2, so that the outermost ring of the screen plate has the function of rotary blowing to fix the problem that the material stored in the outermost ring of the screen plate flows and is not easy to boil, and finally, the dried material enters the discharge chamber 5 from the position of the fourth screen plate 24 for discharging. Different sieve mesh 7 setting modes on the sieve plate 2 enable different air flow directions to be generated in the material chamber, so that the material and the air are fully contacted, the boiling fluidization and powder discharging continuity of a static bed or a fluidized bed is effectively improved, the water content of the material and the continuous production condition are reduced, and the whole drying equipment can be operated more stably and effectively.

According to the bridge type sieve plate fixed bed disclosed by the utility model, the sieve holes 7 on the sieve plate 2 are arranged into a vase shape with narrow front and wide rear, the sieve holes 7 on the sieve plate 2 are arranged in an array manner, the sieve holes 7 of two adjacent rows are staggered, and a certain included angle is formed between the axes of the sieve holes 7 of the two adjacent rows, so that a unidirectional air outlet mode of the sieve holes 7 on the traditional sieve plate 2 is broken through, and a bidirectional comparison row air outlet mode is changed; meanwhile, through the arrangement of the orientation of the sieve holes 7, the outer ring of the sieve plate 2 generates air flow in the whole clockwise direction, and the inner ring generates air flow in the whole anticlockwise direction, so that the boiling fluidization and powder discharge continuity of a static bed or a fluidized bed is effectively improved, the water content of materials and the continuous production condition are reduced, and the whole drying equipment can operate more stably and effectively; according to the bridge type sieve plate fixed bed, the problem that materials stored on the outermost ring of the fixed sieve plate and difficultly flow in a boiling way in the past are solved by arranging the round of sieve holes 7 with the outlets facing clockwise on the round edge of the sieve plate 2, so that the fixed bed has the rotary blowing function of the outermost ring circle; according to the bridge type sieve plate fixed bed, the integral height is reduced by adding the fixed bed equipment consisting of the asymmetric bridge type sieve plates when the whole production line of the drying tower is designed, so that a large amount of construction cost can be saved when manufacturing the production line factory buildings and the drying tower after the height is reduced.

The above specific embodiments are used for further detailed description of the objects, technical solutions and advantageous effects of the present utility model. It should be understood that the foregoing description is only a specific example of the present utility model, and is not intended to limit the utility model, but rather is a reasonable combination of features described in the foregoing embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims (10)

1. A bridge type sieve plate fixed bed, which is characterized in that: comprises a material chamber (1), a sieve plate (2), a ventilation chamber (4), a discharging chamber (5) and an air duct (6), wherein the air duct (6) is connected with the ventilation chamber (4); the upper end of the ventilation chamber (4) is connected with the material chamber (1), and a sieve plate (2) is arranged between the ventilation chamber (4) and the material chamber (1); the right side of the material chamber (1) is connected with the discharging chamber (5); the sieve plate (2) is provided with a plurality of sieve holes (7), the sieve holes (7) are in a bottle shape, are bilaterally symmetrical and comprise a first outlet (71) and a second outlet (72), and the width of the first outlet (71) is smaller than that of the second outlet (72).

2. The bridge deck fixed bed of claim 1 wherein: the screen plate (2) comprises four screen plates I (21), four screen plates II (22), four screen plates III (23) and screen plates IV (24), wherein the screen plate I (21) is a right-angle triangle plate with a bevel edge being an outward convex curve; the second sieve plate (22) is a curved Bian Zhijiao trapezoid plate with a sloping side being a convex curve; the third sieve plate (23) is a square plate; the fourth sieve plate (24) is a rectangular plate; the first sieve plate (21) and the second sieve plate (22) are spliced alternately clockwise to form an outer frame structure of the sieve plate (2), and four third sieve plates (23) are spliced at the center of the outer frame structure to form a circular sieve plate main body; the fourth sieve plate (24) is connected with the edge of the outer frame structure.

3. The bridge deck fixed bed of claim 2 wherein: the sieve plate I (21) and the sieve plate II (22) are provided with a plurality of sieve holes (7) at the bent edges along the edges, and the sieve holes (7) at the other positions are distributed in rows; a plurality of sieve holes (7) on the third sieve plate (23) and the fourth sieve plate (24) are distributed in rows; a plurality of sieve holes (7) distributed in rows are staggered between two adjacent rows.

4. A bridge deck fixed bed as claimed in claim 3 wherein: the axes of the sieve holes (7) in the same row on the first sieve plate (21), the second sieve plate (22), the third sieve plate (23) or the fourth sieve plate (24) are parallel to each other, and the included angle between the axes of the sieve holes (7) in two adjacent rows is 60 degrees.

5. The bridge deck fixed bed of any one of claims 1-4 wherein: the length of the sieve holes (7) is 22mm, the width of the first outlet (71) is 8mm, and the width of the second outlet (72) is 15mm.

6. The bridge deck fixed bed of any one of claims 1-4 wherein: the maximum height between the inner surface of the sieve holes (7) and the sieve plate (2) is 1.5mm.

7. The bridge deck fixed bed of claim 1 wherein: and a manhole (3) is arranged on the material chamber (1) and the ventilation chamber (4).

8. The bridge deck fixed bed of claim 1 wherein: a receiving groove (8) is arranged above the material chamber (1).

9. The bridge deck fixed bed of claim 1 wherein: the discharging chamber (5) is provided with a discharging square-shaped viewing mirror (51).

10. The bridge deck fixed bed of claim 1 wherein: a ventilation regulating valve (61) is arranged in the air duct (6).