Spray drying device for closed cycle

Abstract

The utility model provides a spray drying device for closed circulation, which belongs to the field of drying equipment and comprises a liquid storage tank, an atomization component, a cyclone separator and a recovery component. A cover plate is installed on the top of the liquid storage tank, and supporting legs are installed on the periphery of the bottom of the liquid storage tank. The recycling pipe is mounted at the top of the cyclone separator, dried hot air enters the bag-type dust collector through the recycling pipe, the bag-type dust collector is used for effectively filtering the hot air, fine particles in the air are removed, the content of impurities in the air is reduced, and the air quality is improved. The air flows out through the return pipe after being dedusted and filtered by the bag-type dust collector, and the air blower introduces the air into the hot air pipe again through the return pipe, so that the air with heat energy is conveniently recycled.

Description

Technical Field

[0001] The utility model relates to the field of drying equipment, in particular to a spray drying device for closed-circuit circulation. Background Art

[0002] Spray drying is a method of applying systematic technology to material drying. After the thin material is atomized in the drying chamber, the water vaporizes rapidly in contact with hot air, and a dry product is obtained. Spray drying has the characteristics of fast heat transfer, rapid evaporation of water, and instantaneous drying. It is suitable for heat-sensitive drugs, is not easy to cause material denaturation, and ensures the quality of the material. Among them, a spray drying device with application number "CN201621492230.5" is described in the utility model. The atomizing nozzle has a rotor to atomize the liquid; it has a conical shell, and a through hole is arranged inside the conical shell to disperse the hot air to ensure that the atomized liquid and the hot air are more fully in contact; it has a shell to prevent the atomized liquid from sticking to the wall; a guide plate is arranged to improve the cooling effect and the sedimentation effect, but the device still needs some improvements during use: the spray drying equipment does not have a heat recovery device, resulting in the hot air generated after drying being directly discharged after being filtered by the dust collector, which is very wasteful. Utility Model Content

[0003] The utility model aims to provide a spray drying device for closed-loop circulation, so as to solve the problem that the spray drying equipment mentioned in the background art has no heat recovery device, resulting in the hot air generated after drying being directly discharged after being filtered by a dust collector, which is very wasteful.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spray drying device for closed-circuit circulation, comprising a liquid storage tank, an atomizing component, a cyclone separator and a recovery component;

[0005] Wherein: a cover plate is installed on the top of the liquid storage tank, and supporting legs are installed around the bottom of the liquid storage tank;

[0006] The atomizing assembly includes a water pipe installed at the bottom of the liquid storage tank, a water pump is fixedly installed at one end of the water pipe, a water supply pipe is installed at the water outlet of the water pump, a nozzle is installed at one end of the water supply pipe, a drying tower is provided on one side of the liquid storage tank, the nozzle is installed inside the drying tower, and a hot air pipe is installed on one side of the top of the drying tower;

[0007] A conveying pipe is installed on one side of the bottom of the drying tower, and a cyclone separator is installed at one end of the conveying pipe;

[0008] The recovery component includes a recovery pipe installed on the top of the cyclone separator, a bag dust collector is installed at one end of the recovery pipe, a return pipe is installed on one side of the top of the bag dust collector, a blower is installed on the surface of the return pipe, and the blower is connected to one end of the hot air pipe.

[0009] As a preferred solution of the utility model: a mounting seat is installed on the top of the cover plate, a rotating motor is fixedly installed on the surface of the mounting seat, a transmission rod is fixedly installed on the output end of the rotating motor, one end of the transmission rod extends to the inside of the liquid storage tank and a stirring blade is installed on the bottom.

[0010] As a preferred solution of the utility model: a compressed air bag is installed on one side of the top of the bag-type dust collector, and a plurality of pulse valves are installed on the surface of the compressed air bag, and the pulse valves are connected to the inside of the bag-type dust collector.

[0011] As a preferred solution of the utility model: the bottom ends of the drying tower and the cyclone separator are both equipped with discharge valves.

[0012] As a preferred solution of the utility model: a manual valve is installed at the bottom end of the bag dust collector.

[0013] As a preferred solution of the utility model: a sealing door is installed in the middle of the bag dust collector.

[0014] As a preferred solution of the utility model: the cover plate can be opened movably.

[0015] As a preferred solution of the utility model: a heater is fixedly installed on the surface of the hot air pipe, and a pressure regulating valve is also installed on the surface of the hot air pipe.

[0016] As a preferred solution of the utility model: a control panel is installed on the surface of the liquid storage tank, and the water pump, cyclone separator, blower, rotating motor, pulse valve, unloading valve, heater and pressure regulating valve are all electrically connected to the control panel, and the control panel is electrically connected to an external power supply.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) A recovery pipe is installed on the top of the cyclone separator. The dried hot air enters the bag dust collector through the recovery pipe. The bag dust collector effectively filters the hot air, removes fine particles in the air, and reduces the impurity content in the air. After the air is filtered by the bag dust collector, it flows out through the return pipe. The blower introduces the air into the hot air pipe again through the return pipe, which is convenient for recycling the air with heat energy.

[0019] (2) A compressed air bag is installed on one side of the top of the bag dust collector. When cleaning, the pulse controller triggers the control valves in sequence to open the pulse valves. The compressed air in the compressed air bag is sprayed into the corresponding filter bags. The filter bags expand rapidly and instantly, causing the dust accumulated on the surface of the filter bags to fall off and the filter bags to return to their initial state. The manual valve installed at the bottom of the bag dust collector facilitates the discharge of the blown dust, and the sealed door installed in the middle of the bag dust collector facilitates the replacement of the internal filter bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a side view structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the stirring blade of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the atomization component of the utility model;

[0024] Figure 5 This is a schematic diagram of the recycling component structure of the utility model.

[0025] In the figure: 1. Liquid storage tank; 2. Cover plate; 3. Support leg; 4. Atomization assembly; 41. Water pipe; 42. Water pump; 43. Water supply pipe; 44. Nozzle; 5. Drying tower; 51. Delivery pipe; 6. Hot air pipe; 7. Cyclone separator; 8. Recovery assembly; 81. Recovery pipe; 82. Bag filter; 83. Reflux pipe; 84. Blower; 9. Mounting seat; 10. Rotating motor; 11. Transmission rod; 12. Stirring blade; 13. Compressed air bag; 14. Pulse valve; 15. Discharge valve; 16. Manual valve; 17. Sealing door; 18. Heater; 19. Pressure regulating valve; 20. Control panel. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5A spray drying device for closed-loop circulation includes: a liquid storage tank 1, an atomizing assembly 4, a cyclone separator 7 and a recovery assembly 8; a cover plate 2 is installed on the top of the liquid storage tank 1, and supporting legs 3 are installed around the bottom of the liquid storage tank 1;

[0028] See also Figure 1 , Figure 4 The atomizing assembly 4 includes a water pipe 41 installed at the bottom of the liquid storage tank 1, a water pump 42 is fixedly installed at one end of the water pipe 41, a water supply pipe 43 is installed at the water outlet of the water pump 42, a nozzle 44 is installed at one end of the water supply pipe 43, a drying tower 5 is provided on one side of the liquid storage tank 1, the nozzle 44 is installed inside the drying tower 5, and a hot air pipe 6 is installed on one side of the top of the drying tower 5.

[0029] During specific use: when the water pump 42 is working, the liquid inside the liquid storage tank 1 is pumped to the water supply pipe 43 through the water pipe 41, and the liquid enters the nozzle 44 installed at one end through the water supply pipe 43. The liquid is evenly sprayed inside the drying tower 5 through the nozzle 44. When the hot air enters the drying tower 5 through the hot air pipe 6, it fully contacts with the atomized liquid particles, thereby drying the liquid.

[0030] See also Figure 1 , Figure 2 , cyclone separator 7, a conveying pipe 51 is installed on one side of the bottom of the drying tower 5, and a cyclone separator 7 is installed on one end of the conveying pipe 51.

[0031] When used specifically, the drying tower 5 transports the dried solid particles to the cyclone separator 7 again through the conveying pipe 51 on one side of the bottom, and the solid particles are finely screened by the cyclone separator 7, thereby completing the processing.

[0032] See also Figure 1 , Figure 5 The recovery component 8 includes a recovery pipe 81 installed on the top of the cyclone separator 7, a bag dust collector 82 is installed at one end of the recovery pipe 81, a return pipe 83 is installed on one side of the top of the bag dust collector 82, a blower 84 is installed on the surface of the return pipe 83, and the blower 84 is connected to one end of the hot air pipe 6.

[0033] During specific use: a recovery pipe 81 is installed on the top of the cyclone separator 7, and the dried hot air enters the bag dust collector 82 through the recovery pipe 81. The hot air is effectively filtered by the bag dust collector 82 to remove fine particles in the air and reduce the impurity content in the air. After dust removal and filtration by the bag dust collector 82, the air flows out through the return pipe 83. The blower 84 introduces the air into the hot air pipe 6 again through the return pipe 83, so as to facilitate the recycling of air with heat energy.

[0034] See also Figure 3A mounting seat 9 is installed on the top of the cover plate 2, a rotating motor 10 is fixedly installed on the surface of the mounting seat 9, a transmission rod 11 is fixedly installed on the output end of the rotating motor 10, one end of the transmission rod 11 extends to the inside of the liquid storage tank 1 and a stirring blade 12 is installed at the bottom.

[0035] During specific use: a mounting seat 9 is installed on the top of the cover plate 2. The rotating motor 10 on the surface of the mounting seat 9 drives the transmission rod 11 at the output end to rotate after rotation. The transmission rod 11 rotates and drives the stirring blade 12 at the bottom to stir the liquid in the liquid storage tank 1, so that the liquid is mixed evenly to avoid precipitation when standing.

[0036] See also Figure 1 , Figure 2 , Figure 5 A compressed air bag 13 is installed on one side of the top of the bag dust collector 82, and a plurality of pulse valves 14 are installed on the surface of the compressed air bag 13. The pulse valve 14 is connected to the inside of the bag dust collector 82. A manual valve 16 is installed at the bottom of the bag dust collector 82, and a sealing door 17 is installed in the middle of the bag dust collector 82.

[0037] During specific use: a compressed air bag 13 is installed on one side of the top of the bag dust collector 82. When cleaning, the pulse controller sequentially triggers each control valve to open the pulse valve 14, and the compressed air in the compressed air bag 13 is sprayed into the corresponding filter bags. The filter bags expand rapidly and instantly, so that the dust accumulated on the surface of the filter bags falls off, and the filter bags return to their initial state. The bag dust collector 82 is convenient for discharging the blown dust through the manual valve 16 installed at the bottom, and the internal filter bag is convenient for replacement through the sealing door 17 installed in the middle of the bag dust collector 82.

[0038] See also Figure 1 , Figure 2 The bottom ends of the drying tower 5 and the cyclone separator 7 are both equipped with discharge valves 15 .

[0039] During specific use: a discharge valve 15 is installed at the bottom of the drying tower 5 and the cyclone separator 7 to facilitate the removal of the dried material.

[0040] See also Figure 1 , Figure 3 , the cover plate 2 can be opened movably.

[0041] During specific use: the cover plate 2 on the top of the liquid storage tank 1 can be opened to facilitate cleaning of the liquid storage tank 1 .

[0042] See also Figure 1 , Figure 5 A heater 18 is fixedly installed on the surface of the hot air pipe 6, and a pressure regulating valve 19 is also installed on the surface of the hot air pipe 6.

[0043] During specific use: a heater 18 is installed on the surface of the hot air pipe 6 to heat the air entering the drying tower 5, and a pressure regulating valve 19 is installed on the surface of the hot air pipe 6 to keep the internal pressure of the drying tower 5 in a stable state.

[0044] See also Figure 1 , Figure 3 A control panel 20 is installed on the surface of the liquid storage tank 1, and the water pump 42, the cyclone separator 7, the blower 84, the rotating motor 10, the pulse valve 14, the discharge valve 15, the heater 18 and the pressure regulating valve 19 are all electrically connected to the control panel 20, and the control panel 20 is electrically connected to the external power supply.

[0045] When used specifically: when the control panel 20 is connected to an external power source, the electrical equipment is powered on and starts to operate under control; when the control panel 20 is disconnected from the external power source, the equipment stops operating.

[0046] A recovery pipe 81 is installed on the top of the cyclone separator 7. The dried hot air enters the bag dust collector 82 through the recovery pipe 81. The hot air is effectively filtered by the bag dust collector 82 to remove fine particles in the air and reduce the impurity content in the air. After the air is dust-removed and filtered by the bag dust collector 82, it flows out through the return pipe 83. The blower 84 introduces the air into the hot air pipe 6 again through the return pipe 83, so as to facilitate the recycling of air with heat energy.

[0047] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spray drying device for closed-loop circulation, characterized in that: include: A liquid storage tank (1), wherein a cover plate (2) is installed on the top of the liquid storage tank (1), and support legs (3) are installed around the bottom of the liquid storage tank (1); An atomizing assembly (4), the atomizing assembly (4) comprising a water pipe (41) mounted at the bottom of a liquid storage tank (1), a water pump (42) being fixedly mounted at one end of the water pipe (41), a water supply pipe (43) being mounted at the water outlet end of the water pump (42), a nozzle (44) being mounted at one end of the water supply pipe (43), a drying tower (5) being disposed at one side of the liquid storage tank (1), the nozzle (44) being mounted inside the drying tower (5), and a hot air pipe (6) being mounted at one side of the top of the drying tower (5); A cyclone separator (7), wherein a conveying pipe (51) is installed on one side of the bottom of the drying tower (5), and a cyclone separator (7) is installed on one end of the conveying pipe (51); A recovery component (8), the recovery component (8) comprising a recovery pipe (81) mounted on the top of the cyclone separator (7), a bag dust collector (82) being mounted on one end of the recovery pipe (81), a return pipe (83) being mounted on one side of the top of the bag dust collector (82), a blower (84) being mounted on the surface of the return pipe (83), and the blower (84) being connected to one end of the hot air pipe (6).

2. A spray drying device for closed-loop circulation according to claim 1, characterized in that: A mounting seat (9) is mounted on the top of the cover plate (2); a rotating motor (10) is fixedly mounted on the surface of the mounting seat (9); a transmission rod (11) is fixedly mounted on the output end of the rotating motor (10); one end of the transmission rod (11) extends into the interior of the liquid storage tank (1) and a stirring blade (12) is mounted on the bottom.

3. A spray drying device for closed-loop circulation according to claim 2, characterized in that: A compressed air bag (13) is installed on one side of the top of the bag-type dust collector (82), and a plurality of pulse valves (14) are installed on the surface of the compressed air bag (13), wherein the pulse valves (14) are connected to the interior of the bag-type dust collector (82).

4. A spray drying device for closed-loop circulation according to claim 3, characterized in that: A discharge valve (15) is installed at the bottom of the drying tower (5) and the cyclone separator (7).

5. The spray drying device for closed-loop circulation according to claim 1, characterized in that: A manual valve (16) is installed at the bottom end of the bag filter (82).

6. A spray drying device for closed-loop circulation according to claim 1, characterized in that: A sealing door (17) is installed in the middle of the bag filter (82).

7. A spray drying device for closed-loop circulation according to claim 1, characterized in that: The cover plate (2) can be opened movably.

8. A spray drying device for closed-loop circulation according to claim 4, characterized in that: A heater (18) is fixedly mounted on the surface of the hot air pipe (6), and a pressure regulating valve (19) is also mounted on the surface of the hot air pipe (6).

9. A spray drying device for closed-loop circulation according to claim 8, characterized in that: A control panel (20) is installed on the surface of the liquid storage tank (1); the water pump (42), the cyclone separator (7), the blower (84), the rotary motor (10), the pulse valve (14), the discharge valve (15), the heater (18) and the pressure regulating valve (19) are all electrically connected to the control panel (20); and the control panel (20) is electrically connected to an external power supply.

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