Spray dryer
By using keel assembly and filter cloth cartridge in the spray dryer for gas-solid separation, and using hot air and centrifugal force to promote moisture vaporization, the problems of low gas-solid separation efficiency and cumbersome operation in the prior art are solved, and continuous spray drying is achieved Production and efficient separation.
Patent Information
- Application Number
- CN202420108702.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The existing gas-solid mixture separation technology after spray drying has problems such as high construction cost, large land and low efficiency. In particular, the filter bags need to be manually cleaned, which poses the risk of solid material pollution and cumbersome operation.
A spray dryer is designed, including a spray tower, a spray drying area, a filtering area and a discharge area. The keel assembly and a filter cloth barrel are used for gas-solid separation. The hot air enters the spray drying area in the tangent direction, and uses centrifugal force and hot air to shear. It promotes moisture vaporization, and a star feeder is installed in the discharge area to facilitate the discharge of solid materials.
The continuous separation of gas-solid substances is achieved, the efficiency of spray drying is improved, the construction cost is reduced, the operation is simplified, the risk of solid material pollution is avoided, and the installation and disassembly of the keel assembly and the filter cloth cartridge is convenient.
Smart Images
Figure CN222218621U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spray drying equipment, in particular to a spray dryer. Background Art
[0002] Spray drying is a process in which the thin material is atomized and then brought into contact with hot air to cause the water in the thin material to vaporize rapidly to obtain a dry product. Spray drying can directly dry solutions and emulsions into powder or granular products, eliminating the evaporation, crushing and other processes.
[0003] At present, cyclone separators or filter bags are mainly used to separate the gas-solid mixture after spray drying. The use of cyclone separators will increase construction costs and occupy a large area. The use of filter bags for separation can only be used when the solid proportion in the gas-solid mixture is small. In addition, since the filter bag usually has only one bag opening, the solid material filtered out of the filter bag needs to be cleaned manually, which poses a risk of solid material contamination. The manual cleaning process of the filter bag is cumbersome, which affects the efficiency of spray drying.
[0004] In view of this, it is of great significance to provide a new spray dryer to achieve continuous production of the spray drying process and improve the efficiency of the spray drying. Utility Model Content
[0005] In order to overcome the above technical defects, the utility model provides a spray dryer, which solves the technical problem of high gas-solid separation cost during spray drying, can continuously separate gas and solid substances in the spray drying process, and improve the efficiency of spray drying.
[0006] To achieve the above-mentioned purpose, the purpose of the utility model is to provide a spray dryer, including a spray tower, wherein a spray drying area, a filtering area and a discharging area are sequentially arranged from top to bottom in the spray tower; the spray drying area is provided with a nozzle and a hot air inlet; the side wall of the filtering area is provided with an exhaust port, an upper baffle and a lower baffle are provided in the filtering area, a keel assembly is connected between the upper baffle and the lower baffle, and a filter cloth cylinder is sleeved on the circumferential outer side of the keel assembly; a discharging port is provided at the bottom of the discharging area.
[0007] In a specific embodiment of the present invention, the hot air inlet is arranged on the inner wall of the spray drying zone, and the hot air inlet extends along the tangent direction of the inner wall of the spray drying zone.
[0008] In a specific embodiment of the present utility model, the discharge port is provided with a feeder.
[0009] In a specific implementation of the present invention, the feeder is a star-shaped feeder.
[0010] In a specific implementation of the present utility model, the upper baffle plate and the lower baffle plate are both correspondingly provided with a plurality of fixing holes, and the keel assembly is fixedly connected to the fixing holes.
[0011] In a specific embodiment of the present invention, the keel assembly includes a first fixing ring, a support rod and a second fixing ring, the support rods are provided in plurality, and the upper end of the support rod is fixedly connected to the first fixing ring, a positioning hole is provided on the second fixing ring corresponding to the support rod, and the lower end of the support rod is inserted into the positioning hole; the filter cloth drum has an inlet and an outlet, the edge of the inlet is clamped between the first fixing ring and the upper baffle, the first fixing ring is fixedly connected to the upper baffle by a first bolt, the edge of the outlet is clamped and fixed between the second fixing ring and the upper baffle, and the second fixing ring is fixedly connected to the lower baffle by a second bolt.
[0012] In a specific implementation of the present utility model, a positioning rod is provided at the lower end of the support rod, and the positioning rod is inserted into the positioning hole.
[0013] In a specific embodiment of the present invention, the diameter of the positioning rod is smaller than the diameter of the support rod.
[0014] In a specific implementation of the present utility model, the first fixing ring is provided with a first countersunk screw hole corresponding to the first bolt, and the second fixing ring is provided with a second countersunk hole corresponding to the second bolt.
[0015] In a specific embodiment of the present invention, an elastic cloth belt is provided on the inner side of the filter cloth cylinder corresponding to the support rod, both ends of the elastic cloth belt are fixedly connected to the inner wall of the filter cloth cylinder, and a gap for the support rod to pass through is provided between the middle part of the elastic cloth belt and the filter cloth cylinder.
[0016] The beneficial effects of the utility model are as follows: 1. The utility model sets a keel assembly and a filter cloth cylinder in the filtering area of the spray tower, which can realize the separation of gas and solid mixed materials obtained by spray drying. The solid can directly fall into the discharge area below and finally be discharged, which can realize continuous spray drying of materials and separate discharge; 2. The hot air of the utility model enters the spray drying area along the tangential wind direction and contacts with the atomized material. At the same time, due to the effect of centrifugal force, the shearing effect between the atomized material and the hot air is strong, which can promote the rapid vaporization of water in the atomized material; 3. The utility model is in the discharge A star-shaped feeder is arranged at the outlet, which makes it more convenient to discharge the dried and separated solid materials; 4. The keel assembly and the filter cloth cylinder of the utility model are easy to install and disassemble; 5. An elastic cloth belt is arranged in the filter cloth cylinder of the utility model. During the spray drying process, the gas phase passes through the filter holes of the filter cloth cylinder, which will cause the filter cloth cylinder to expand, stretch the elastic cloth belt and store elastic potential energy. When the pressure difference on both sides of the filter cloth cylinder disappears, the elastic cloth belt can promote the speed of disappearance of the expansion of the filter cloth cylinder, promote the falling of the solid materials on the inner surface of the filter cloth cylinder, and drop into the discharge area from the outlet of the filter cloth cylinder for discharge. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the spray dryer of the utility model;
[0018] Figure 2 It is a structural sectional view of the keel assembly of the utility model.
[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0020] 1. Spray tower; 2. Nozzle; 3. Hot air inlet; 4. Exhaust outlet; 5. Discharge outlet; 6. Feeder; 7. Upper baffle; 8. Lower baffle; 9. Keel assembly; 91. First fixing ring; 92. Support rod; 93. Second fixing ring; 94. First bolt; 95. Second bolt; 10. Filter cloth cylinder; 11. Elastic cloth belt; 12. Spray drying area; 13. Filtration area; 14. Discharge area. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0022] Based on the attached Figure 1-2A spray dryer comprises a spray tower 1, in which a spray drying area 12, a filtering area 13 and a discharging area 14 are arranged from top to bottom; the spray drying area 12 is provided with a nozzle 2 and a hot air inlet 3; the side wall of the filtering area 13 is provided with an exhaust port 4, and the filtering area 13 is provided with an upper baffle plate 7 and a lower baffle plate 8, a keel assembly 9 is connected between the upper baffle plate 7 and the lower baffle plate 8, and a filter cloth cylinder 10 is sleeved on the circumferential outer side of the keel assembly 9; a discharging port 5 is provided at the bottom of the discharging area 14.
[0023] It should be noted that the upper baffle 7 is arranged above the lower baffle 8, and the rear edges of the upper baffle 7 and the lower baffle 8 are fixedly connected to the inner wall of the spray tower 1, a filtration area 13 is formed between the upper baffle 7 and the lower baffle 8, a keel assembly 9 and a filter cloth cylinder 10 are arranged in the discharge area 14, and an exhaust port 4 is arranged on the side wall of the filtration area 13. After the gas and solid substances formed in the spray drying area 12 are filtered by the filter cloth cylinder 10, the gas phase is discharged from the exhaust port 4, and the solid material falls into the discharge area 14 for discharge.
[0024] In some examples, the hot air inlet 3 is disposed on the inner wall of the spray drying zone 12 , and the hot air inlet 3 extends along a tangent direction of the inner wall of the spray drying zone 12 .
[0025] In some examples, the discharge port 5 is provided with a feeder 6, and the feeder 6 can discharge the solid material stably.
[0026] In some examples, the feeder 6 is a star-shaped feeder 6 .
[0027] In some examples, the lower portion of the discharge zone 14 is conical to facilitate the solid materials to gather at the discharge port 5 .
[0028] In some examples, the upper baffle plate 7 and the lower baffle plate 8 are each provided with a plurality of fixing holes, and the keel assembly 9 is fixedly connected to the fixing holes.
[0029] In some instances, the keel assembly 9 includes a first fixing ring 91, a support rod 92 and a second fixing ring 93, a plurality of support rods 92 are provided, and the upper end of the support rod 92 is fixedly connected to the first fixing ring 91, a positioning hole is provided on the second fixing ring 93 corresponding to the support rod 92, and the lower end of the support rod 92 is inserted into the positioning hole; the filter cloth cylinder 10 has an inlet and an outlet, the edge of the inlet is clamped between the first fixing ring 91 and the upper baffle 7, the first fixing ring 91 is fixedly connected to the upper baffle 7 by a first bolt 94, the edge of the outlet is clamped and fixed between the second fixing ring 93 and the upper baffle 7, and the second fixing ring 93 is fixedly connected to the lower baffle 8 by a second bolt 95.
[0030] In some examples, a positioning rod is disposed at the lower end of the support rod 92 , and the positioning rod is inserted into the positioning hole.
[0031] In some embodiments, the diameter of the positioning rod is smaller than the diameter of the support rod 92.
[0032] In some examples, the first fixing ring 91 is provided with a first countersunk screw hole corresponding to the first bolt 94, and the second fixing ring 93 is provided with a second countersunk hole corresponding to the second bolt 95. The first countersunk hole and the second countersunk hole can prevent the bolt from falling off.
[0033] In some instances, an elastic fabric belt 11 is provided on the inner side of the filter cloth drum 10 corresponding to the support rod 92 , both ends of the elastic fabric belt 11 are fixedly connected to the inner wall of the filter cloth drum 10 , and a gap for the support rod 92 to pass through is provided between the middle part of the elastic fabric belt 11 and the filter cloth drum 10 .
[0034] The spray drying principle of the spray dryer of the utility model is as follows: the material sprayed from the nozzle 2 contacts the hot air spirally entering the spray drying area 12, and the moisture is rapidly vaporized and dried; the dried gas and solid matter enter the filter cloth cylinder 10 from the cylinder inlet, and the gas passes through the filter holes of the filter cloth cylinder 10 and is discharged from the tail gas port 4; the solid adheres to the surface of the filter cloth cylinder 10 or directly falls into the discharge area 14 under the action of gravity, and is discharged from the discharge port 5, and the solid material is obtained by continuous spray drying.
[0035] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0036] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A spray dryer, comprising a spray tower (1), characterized in that: The spray tower (1) is provided with a spray drying area (12), a filtering area (13) and a discharging area (14) in order from top to bottom; the spray drying area (12) is provided with a nozzle (2) and a hot air inlet (3); the side wall of the filtering area (13) is provided with an exhaust port (4); an upper baffle plate (7) and a lower baffle plate (8) are provided in the filtering area (13); a keel assembly (9) is connected between the upper baffle plate (7) and the lower baffle plate (8); a filter cloth cylinder (10) is sleeved on the outer circumference of the keel assembly (9); and a discharging port (5) is provided at the bottom of the discharging area (14).
2. The spray dryer according to claim 1, characterized in that The hot air inlet (3) is arranged on the inner wall of the spray drying zone (12), and the hot air inlet (3) extends along the tangent direction of the inner wall of the spray drying zone (12).
3. The spray dryer according to claim 1, characterized in that The discharge port (5) is provided with a feeder (6).
4. The spray dryer according to claim 3, characterized in that The feeder (6) is a star-shaped feeder (6).
5. The spray dryer according to any one of claims 1 to 4, characterized in that: The upper baffle plate (7) and the lower baffle plate (8) are each correspondingly provided with a plurality of fixing holes, and the keel assembly (9) is fixedly connected to the fixing holes.
6. The spray dryer according to claim 5, characterized in that The keel assembly (9) comprises a first fixing ring (91), a support rod (92) and a second fixing ring (93); a plurality of support rods (92) are provided, and the upper end of the support rod (92) is fixedly connected to the first fixing ring (91); a positioning hole is provided on the second fixing ring (93) corresponding to the support rod (92), and the lower end of the support rod (92) is inserted into the positioning hole; the filter cloth cylinder (10) has an inlet and an outlet; the edge of the inlet is clamped between the first fixing ring (91) and the upper baffle (7); the first fixing ring (91) is fixedly connected to the upper baffle (7) by a first bolt (94); the edge of the outlet is clamped and fixed between the second fixing ring (93) and the upper baffle (7); the second fixing ring (93) is fixedly connected to the lower baffle (8) by a second bolt (95).
7. The spray dryer according to claim 6, characterized in that A positioning rod is provided at the lower end of the support rod (92), and the positioning rod is inserted into the positioning hole.
8. The spray dryer according to claim 7, characterized in that The diameter of the positioning rod is smaller than the diameter of the supporting rod (92).
9. The spray dryer according to claim 6, characterized in that The first fixing ring (91) is provided with a first countersunk screw hole corresponding to the first bolt (94), and the second fixing ring (93) is provided with a second countersunk hole corresponding to the second bolt (95).
10. The spray dryer according to claim 6, characterized in that An elastic cloth belt (11) is arranged on the inner side of the filter cloth cylinder (10) corresponding to the support rod (92), both ends of the elastic cloth belt (11) are fixedly connected to the inner wall of the filter cloth cylinder (10), and a gap for the support rod (92) to pass through is arranged between the middle part of the elastic cloth belt (11) and the filter cloth cylinder (10).