A centrifugal spray dryer residual heat recovery system

Abstract

The invention provides a centrifugal spray dryer residual heat recovery system, which relates to the technical field of centrifugal spray dryer residual heat recovery, and comprises a base, wherein the main body of the base is a rectangular structure, and the top surface of the base is fixedly connected with pillars in an annular array, so as to solve the problem that when the existing residual heat recovery system performs residual heat recovery operation on the dryer, the positions of heat generated by the dryer in different working stages are different, but since the heat is mostly recovered at fixed positions, the recovery is relatively limited and the residual heat cannot be fully recovered. The compressed gas is supplied to the internal position of the vortex tube through the compressor installed on the outside of the steam pipe, and the valves in the heat exhaust pipe and the return pipe cooling pipe are opened synchronously according to actual needs to respectively obtain the hot gas and the cold gas, and the utilization rate of the residual heat recovery can be effectively increased by generating two kinds of excess air at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of residual heat recovery of centrifugal spray dryers, and in particular to a residual heat recovery system of a centrifugal spray dryer. Background Art

[0002] Spray drying is the most widely used process in liquid forming and drying industries. It is most suitable for producing powdered and granular solid products from solutions, emulsions, suspensions and paste-like liquid raw materials. It needs to generate a lot of heat to carry out drying operations, but a lot of heat will inevitably be lost when it is generating heat, so a corresponding residual heat recovery system is needed.

[0003] However, the existing waste heat recovery system has the following problems in actual application:

[0004] 1. When the existing residual heat recovery system recovers the residual heat of the dryer, the heat generated by the dryer in different working stages is at different locations. However, since the heat is mostly recovered at fixed locations, the recovery is limited and the residual heat cannot be fully recovered.

[0005] 2. When the existing residual heat recovery system recovers the residual heat of the dryer, it often recovers the corresponding steam by heating the water. However, due to the loss of water flow during the heating process, it is necessary to continuously add water flow. However, the process of adding water easily causes the temperature of the originally high-temperature water to drop, which is not conducive to the recovery of residual heat.

[0006] In view of this, the existing structure and defects are studied and improved, and a centrifugal spray dryer residual heat recovery system is provided. Summary of the invention

[0007] The present invention provides a centrifugal spray dryer residual heat recovery system, which solves the problem that when the existing residual heat recovery system performs residual heat recovery operation on the dryer, the positions of heat generated by the dryer in different working stages are different, but since the heat is mostly recovered at fixed positions, the recovery process is relatively limited and the residual heat cannot be fully recovered.

[0008] The invention provides a purpose and function of a residual heat recovery system for a centrifugal spray dryer, which specifically comprises: a base, the main body of the base is a rectangular structure, and the top surface of the base is fixedly connected with pillars in an annular array, and the top of the pillar is fixedly connected with a dryer, the dryer is a centrifugal spray dryer, and the outer side of the dryer is sleeved with a heat-conducting frame A, a steam pipe is installed on the right side of the pump, a compressor is installed on the outer side of the steam pipe, and the top of the base is fixedly connected with a bracket, a vortex tube is installed on the left side of the bracket, and the vortex tube is connected to the steam pipe.

[0009] Furthermore, a heat pipe is installed on the right side of the insulation cover, a frame is fixedly connected to the top of the base, the frame is connected to the heat pipe, and a water tower is fixedly connected to the top of the base, the water tower is located on the inner side of the frame, and the frame is used to heat the water in the water tower, a supply pipe is installed on the outside of the water tower, the supply pipe is located at the lower end of the water tower, and the supply pipe is used to supply water to the water tower.

[0010] Furthermore, the heat-conducting frame A is an annular structure, and an annular groove is opened inside the heat-conducting frame A, and the bottom end of the heat-conducting frame A is fixedly connected to a heat-insulating cover, the heat-insulating cover is a folding structure, and the bottom end of the heat-insulating cover is fixedly connected to the heat-conducting frame B, and the structure of the heat-conducting frame B is consistent with that of the heat-conducting frame A.

[0011] Furthermore, a pump is installed at the top of the water tower, which is used to extract water vapor, and an electric push rod B is installed on the inner bottom end surface of the water tower, and a partition is installed on the top of the electric push rod B through a weighing device, the outer side of the partition is engaged with the inner wall of the water tower, and a mixing pipe is also installed on the inner side of the partition, and a mixing valve is installed inside the mixing pipe.

[0012] Furthermore, a heat exhaust pipe is installed on the right side of the vortex tube, a valve is installed inside the heat exhaust pipe, and a return pipe A is installed at the top of the heat exhaust pipe, the other end of the return pipe A is connected to the heat conductive frame A, and an electromagnetic valve is also installed inside the return pipe A, and a cooling pipe is installed at the cold air output end of the vortex tube, a return pipe B is installed at the bottom end of the cooling pipe, the other end of the return pipe B is connected to the heat conductive frame B, and electromagnetic valves are installed inside the cooling pipe and the return pipe B.

[0013] Furthermore, the heat-conducting frame A and the heat-conducting frame B are both electromagnetic structures, and spring rods are installed in a circular array on the inner side of the heat-conducting frame A and the heat-conducting frame B, and a clamp is fixedly connected to the side of the spring rod away from the heat-conducting frame A and the heat-conducting frame B, and the clamp is magnetic.

[0014] Furthermore, when the heat-conducting frame A and the heat-conducting frame B are powered on to generate magnetism, the clamp is in a state of being repelled and moving away from the heat-conducting frame A and the heat-conducting frame B, and the bottom end of the heat-conducting frame B is fixedly connected to a central controller, a temperature meter is installed inside the central controller, and the central controller and the temperature meter together constitute a temperature measurement structure.

[0015] Furthermore, an electric push rod A is installed on the inner side of the heat-conducting frame A and the heat-conducting frame B, and heat-conducting plates are fixedly connected to the inside of the heat-conducting frame A and the heat-conducting frame B in a ring array. The heat-conducting plates are flexible metals, and the heat-conducting frames A, B and the heat-conducting plates together constitute a heat-conducting structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the temperature detector installed in the central controller detects that there is a high temperature area in the dryer, the heat-conducting frame B can be energized synchronously, and the heat-conducting frame B can be energized to generate magnetism to repel the clamp installed inside it to the outside to contact the dryer for position limiting. After the heat-conducting frame A and the heat-conducting frame B are both limited, the heat can be synchronously supplied to the internal position of the frame through the heat-conducting plate installed on the inner side of the heat-conducting frame A and the heat-conducting frame B through the heat-conducting pipe, thereby achieving a more practical purpose.

[0018] 2. After the frame is heated, the water in the water tower will be heated to generate steam, and the pump installed on the top of the water tower will be started synchronously to extract the generated water vapor and discharge it through the steam pipe, and the compressed gas will be supplied to the inner position of the vortex tube through the compressor installed on the outside of the steam pipe, and the valves in the heat exhaust pipe and the return pipe cooling pipe will be opened according to actual needs to obtain the hot air and cold air respectively. The simultaneous generation of two kinds of excess air can effectively increase the utilization rate of residual heat recovery.

[0019] 3. When the water in the water tower is heated to generate steam, the liquid in the water tower will decrease accordingly. When the weighing device installed on the top of the electric push rod B detects that the weight of the water above the partition has decreased, the electric push rod B installed in the water tower will be started synchronously, and the water above the partition will be pushed up synchronously so that the water can be closer to the heat transfer pipe for more efficient and sufficient heating operation. At the same time, the water is supplied to the supply pipe installed outside the water tower and the inside of the water tower, and then the preliminary heating operation is carried out under the partition. After the preliminary heating of the water under the partition is completed, the valve in the mixing pipe is opened synchronously to continue heating the water flow. This design effectively reduces energy loss and achieves a more practical purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0021] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1 It shows a schematic diagram of a front and side view of a partial structural cutaway state of a recovery system according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a top and side view of a partial structural cutaway state of a recovery system according to an embodiment of the present invention is shown;

[0025] Figure 3 A front side structural schematic diagram of a recycling system according to an embodiment of the present invention is shown;

[0026] Figure 4 A schematic diagram of the top view of the recovery system according to an embodiment of the present invention is shown;

[0027] Figure 5 A schematic diagram showing the structure of the pillar to the fixture of the recovery system according to an embodiment of the present invention is shown;

[0028] Figure 6 A schematic diagram showing the structure from the base to the return pipe B of the recovery system according to an embodiment of the present invention is shown;

[0029] Figure 7 The recycling system according to the embodiment of the present invention is shown. Figure 2 The enlarged structural diagram at A in the middle;

[0030] Figure 8 The recycling system according to the embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at B in the middle.

[0031] Fig. 9 A schematic diagram of the system structure of a recycling system according to an embodiment of the present invention is shown.

[0032] Reference numerals list

[0033] 1. Base; 2. Pillar; 3. Dryer; 4. Heat-conducting frame A; 5. Insulation cover; 6. Heat-conducting frame B; 7. Electric push rod A; 8. Heat-conducting plate; 9. Spring rod; 10. Clamp; 11. Central controller; 12. Temperature sensor; 13. Heat-conducting pipe; 14. Frame; 15. Water tower; 16. Pump; 17. Electric push rod B; 18. Weighing machine; 19. Partition; 20. Mixing pipe; 21. Steam pipe; 22. Compressor; 23. Bracket; 24. Vortex tube; 25. Heat exhaust pipe; 26. Reflux pipe A; 27. Cooling pipe; 28. Reflux pipe B. DETAILED DESCRIPTION

[0034] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] Example:

[0036] As attached Figure 1 To Attachment Fig. 9 As shown:

[0037] The present invention provides a centrifugal spray dryer residual heat recovery system, comprising: a base 1, the main body of the base 1 is a rectangular structure, and the top surface of the base 1 is fixedly connected with pillars 2 in a ring array, and the top of the pillars 2 is fixedly connected with a dryer 3, the dryer 3 is a centrifugal spray dryer, and the outer side of the dryer 3 is sleeved with a heat conducting frame A4, a steam pipe 21 is installed on the right side of the pump 16, a compressor 22 is installed on the outer side of the steam pipe 21, and the top of the base 1 is fixedly connected with a bracket 23, A vortex tube 24 is installed on the left side of the bracket 23, and the vortex tube 24 is connected to the steam pipe 21. A heat exhaust pipe 25 is installed on the right side of the vortex tube 24. A valve is installed inside the heat exhaust pipe 25, and a return pipe A26 is installed on the top of the heat exhaust pipe 25. The other end of the return pipe A26 is connected to the heat conducting frame A4, and a solenoid valve is also installed inside the return pipe A26. A cooling pipe 27 is installed at the cold air output end of the vortex tube 24, and a return pipe B28 is installed at the bottom of the cooling pipe 27. The return pipe B28 is installed at the bottom of the return pipe B28. The other end of 28 is connected to the heat-conducting frame B6, and electromagnetic valves are installed inside the cooling pipe 27 and the return pipe B28. When the water in the water tower 15 is heated to generate steam, the liquid in the water tower 15 will decrease accordingly. When the weighing device 18 installed on the top of the electric push rod B17 detects that the weight of the water above the partition 19 has decreased, the electric push rod B17 installed in the water tower 15 will be started synchronously, and the water above the partition 19 will be pushed up synchronously so that the water can be closer to the heat-conducting pipe 13 for more efficient and sufficient heating operation. At the same time, water is supplied to the supply pipe installed outside the water tower 15 and the inside of the water tower 15, and then the preliminary heating operation is carried out under the partition 19. After the preliminary heating of the water under the partition 19 is completed, the valve in the mixing pipe 20 is opened synchronously to continue heating the water flow. This design effectively reduces energy loss and achieves a more practical purpose.

[0038] Among them, the heat-conducting frame A4 is an annular structure, and an annular groove is opened inside the heat-conducting frame A4, and the bottom end of the heat-conducting frame A4 is fixedly connected to a heat-insulating cover 5, the heat-insulating cover 5 is a folding structure, and the bottom end of the heat-insulating cover 5 is fixedly connected to a heat-conducting frame B6, the structure of the heat-conducting frame B6 is consistent with the structure of the heat-conducting frame A4, the inner sides of the heat-conducting frames A4 and B6 are installed with electric push rods A7, and the insides of the heat-conducting frames A4 and B6 are fixedly connected with heat-conducting plates 8 in an annular array, and the heat-conducting plates 8 are flexible metals, and the heat-conducting frames A4, the heat-conducting frames B6 and the heat-conducting plates 8 together constitute a heat-conducting structure. After the frame 14 is heated, the water in the water tower 15 is heated to generate steam, and the pump 16 installed on the top of the water tower 15 is started synchronously to extract the generated water vapor and discharge it through the steam pipe 21, and the compressed gas is supplied to the internal position of the vortex tube 24 through the compressor 22 installed on the outside of the steam pipe 21, and the valves in the heat exhaust pipe 25 and the return pipe cooling pipe 27 are opened according to actual needs to obtain hot air and cold air respectively. The simultaneous generation of two kinds of excess air can effectively increase the utilization rate of residual heat recovery.

[0039] Among them, the heat-conducting frame A4 and the heat-conducting frame B6 are both electromagnetic structures, and the inner sides of the heat-conducting frame A4 and the heat-conducting frame B6 are both installed with spring rods 9 in a circular array, and the side of the spring rods 9 away from the heat-conducting frame A4 and the heat-conducting frame B6 is fixedly connected with a clamp 10, and the clamp 10 has magnetism. When the heat-conducting frame A4 and the heat-conducting frame B6 are powered on to generate magnetism, the clamp 10 is in a state of being repelled and moving away from the heat-conducting frame A4 and the heat-conducting frame B6, and the bottom end of the heat-conducting frame B6 is fixedly connected with a central controller 11, and a temperature detector 12 is installed inside the central controller 11. The central controller 11 and the temperature detector 12 are together A temperature measuring structure is formed. When the temperature detector 12 installed in the central controller 11 detects that there is a high-temperature area in the dryer 3, the heat-conducting frame B6 can be energized synchronously, and the heat-conducting frame B6 can be energized to generate magnetism to repel the clamp 10 installed inside it to the outside to contact and limit the dryer 3. After the heat-conducting frame A4 and the heat-conducting frame B6 are both limited, the heat can be synchronously supplied to the internal position of the frame 14 through the heat-conducting plate 8 installed on the inner side of the heat-conducting frame A4 and the heat-conducting frame B6 through the heat-conducting pipe 13, thereby achieving a more practical purpose.

[0040] Among them, a heat pipe 13 is installed on the right side of the insulation cover 5, a frame 14 is fixedly connected to the top of the base 1, the frame 14 is connected to the heat pipe 13, and a water tower 15 is fixedly connected to the top of the base 1, the water tower 15 is located on the inner side of the frame 14, and the frame 14 is used to heat the water in the water tower 15, a supply pipe is installed on the outer side of the water tower 15, the supply pipe is located at the lower end of the water tower 15, and the supply pipe is used to supply water to the water tower 15, a pump 16 is installed on the top of the water tower 15, the pump 16 is used to extract water vapor, and an electric push rod B17 is installed on the inner bottom end surface of the water tower 15, and a partition 19 is installed on the top of the electric push rod B17 through a weighing device 18, the outer side of the partition 19 is meshed with the inner wall of the water tower 15, and a mixing pipe 20 is also installed on the inner side of the partition 19, and a mixing valve is installed inside the mixing pipe 20.

[0041] When in use: first, when it is necessary to recover the residual heat of the dryer 3 installed on the base 1 through the support 2, the heat-conducting frame B6 and the heat-conducting frame A4 can be synchronously sleeved from the top of the dryer 3 to the outer position of the dryer 3, and then the heat-conducting frame A4 installed on the outer side of the dryer 3 can be energized synchronously;

[0042] When the heat-conducting frame A4 is energized to generate magnetism, it will repel the clamp 10 installed on the inner side of the heat-conducting frame A4, and when the clamp 10 is away from the heat-conducting frame A4, it can synchronously contact the dryer 3 to limit the heat-conducting frame A4 to the outer side of the dryer 3, and then synchronously start the electric push rod A7 installed at the bottom of the heat-conducting frame A4 to push the heat-conducting frame B6 along the dryer 3. When the heat-conducting frame B6 moves downward along the dryer 3, it will synchronously perform a cyclic detection operation on the temperature of the dryer 3 through the temperature measuring device 12 installed inside the central controller 11;

[0043] When the temperature detector 12 installed in the central controller 11 detects that there is a high temperature area in the dryer 3, the heat-conducting frame B6 can be energized synchronously, and the heat-conducting frame B6 can be energized to generate magnetism to repel the clamp 10 installed inside it to the outside to contact and limit the dryer 3. After the heat-conducting frame A4 and the heat-conducting frame B6 are both limited, the heat can be synchronously supplied to the internal position of the frame 14 through the heat-conducting plate 8 installed inside the heat-conducting frame A4 and the heat-conducting frame B6 through the heat-conducting pipe 13, thereby achieving a more practical purpose;

[0044] When the frame 14 is heated, the water in the water tower 15 is heated to generate steam, and the pump 16 installed on the top of the water tower 15 is started synchronously to extract the generated water vapor and discharge it through the steam pipe 21, and the compressed gas is supplied to the inner position of the vortex tube 24 through the compressor 22 installed on the outside of the steam pipe 21, and the valves in the heat exhaust pipe 25 and the return pipe cooling pipe 27 are opened according to actual needs to obtain the hot air and cold air respectively. The simultaneous generation of two kinds of excess air can effectively increase the utilization rate of residual heat recovery;

[0045] When the water in the water tower 15 is heated to generate steam, the liquid in the water tower 15 will decrease accordingly. When the weighing device 18 installed on the top of the electric push rod B17 detects that the weight of the water above the partition 19 has decreased, the electric push rod B17 installed in the water tower 15 will be started synchronously, and the water above the partition 19 will be pushed up synchronously so that the water can be closer to the heat transfer pipe 13 for more efficient and sufficient heating operations. At the same time, the water is supplied to the supply pipe installed on the outside of the water tower 15 and the inside of the water tower 15, and then the preliminary heating operation is performed under the partition 19. After the preliminary heating of the water under the partition 19 is completed, the valve in the mixing pipe 20 is opened synchronously to continue heating the water flow. This design effectively reduces energy loss and achieves a more practical purpose.

[0046] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A centrifugal spray dryer residual heat recovery system, characterized in that: include: A base (1), wherein the main body of the base (1) is a rectangular structure, and pillars (2) are fixedly connected to the top surface of the base (1) in a circular array, and a dryer (3) is fixedly connected to the top of the pillar (2), the dryer (3) is a centrifugal spray dryer, and a heat-conducting frame A (4) is sleeved on the outer side of the dryer (3); The heat-conducting frame A (4) is an annular structure, and an annular groove is provided inside the heat-conducting frame A (4), and a heat-insulating cover (5) is fixedly connected to the bottom end of the heat-conducting frame A (4), and the heat-insulating cover (5) is a folding structure, and a heat-conducting frame B (6) is fixedly connected to the bottom end of the heat-insulating cover (5), and the structure of the heat-conducting frame B (6) is consistent with that of the heat-conducting frame A (4); An electric push rod A (7) is installed inside the heat-conducting frame A (4) and the heat-conducting frame B (6), and a heat-conducting plate (8) is fixedly connected to the inside of the heat-conducting frame A (4) and the heat-conducting frame B (6) in a ring array, and the heat-conducting plate (8) is a flexible metal, and the heat-conducting frame A (4), the heat-conducting frame B (6) and the heat-conducting plate (8) together form a heat-conducting structure; The heat-conducting frame A (4) and the heat-conducting frame B (6) are both electromagnetic structures, and spring rods (9) are installed in a circular array on the inner sides of the heat-conducting frame A (4) and the heat-conducting frame B (6), and a clamp (10) is fixedly connected to the side of the spring rod (9) away from the heat-conducting frame A (4) and the heat-conducting frame B (6), and the clamp (10) has magnetism; The heat-conducting frame A (4) and the heat-conducting frame B (6) are in a state of being powered on to generate magnetism, the clamp (10) is in a state of being repelled and moving away from the heat-conducting frame A (4) and the heat-conducting frame B (6), and the bottom end of the heat-conducting frame B (6) is fixedly connected to a central controller (11), a temperature measuring device (12) is installed inside the central controller (11), and the central controller (11) and the temperature measuring device (12) together form a temperature measuring structure; A heat conducting pipe (13) is installed on the right side of the heat preservation cover (5); a frame (14) is fixedly connected to the top of the base (1); the frame (14) is connected to the heat conducting pipe (13); and a water tower (15) is fixedly connected to the top of the base (1); the water tower (15) is located inside the frame (14); and the frame (14) is used to heat the water in the water tower (15); and a supply pipe is installed outside the water tower (15); the supply pipe is located at the lower end of the water tower (15); and the supply pipe is used to supply water to the water tower (15); A pump (16) is installed at the top of the water tower (15), and the pump (16) is used to extract water vapor. An electric push rod B (17) is installed on the bottom end surface of the water tower (15), and a partition (19) is installed on the top of the electric push rod B (17) through a weighing device (18). The outer side of the partition (19) is meshed with the inner wall of the water tower (15), and a mixing pipe (20) is also installed on the inner side of the partition (19), and a mixing valve is installed inside the mixing pipe (20); A steam pipe (21) is installed on the right side of the pump (16), a compressor (22) is installed on the outside of the steam pipe (21), a bracket (23) is fixedly connected to the top of the base (1), a vortex tube (24) is installed on the left side of the bracket (23), and the vortex tube (24) is connected to the steam pipe (21).

2. A centrifugal spray dryer residual heat recovery system as claimed in claim 1, characterized in that: A heat exhaust pipe (25) is installed on the right side of the vortex tube (24), a valve is installed inside the heat exhaust pipe (25), and a return pipe A (26) is installed at the top of the heat exhaust pipe (25), the other end of the return pipe A (26) is connected to the heat conduction frame A (4), and a solenoid valve is also installed inside the return pipe A (26), and a cooling pipe (27) is installed at the cold air output end of the vortex tube (24), a return pipe B (28) is installed at the bottom end of the cooling pipe (27), the other end of the return pipe B (28) is connected to the heat conduction frame B (6), and solenoid valves are installed inside the cooling pipe (27) and the return pipe B (28).

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