Waste heat recovery heat exchanger of spray drying system

Abstract

The utility model discloses a waste heat recovery heat exchanger of a spray drying system, which relates to the field of waste heat recovery and comprises a frame, a gas pipe is mounted on the outer wall of the frame, a plate gas-gas heat exchanger is mounted in an inner cavity of the frame, and one end of the plate gas-gas heat exchanger is movably connected with a high-pressure gas pump. The air pipes comprise a hot side air inlet pipe, a hot side air outlet pipe, a cold side air inlet pipe and a cold side air outlet pipe, the hot side air inlet pipe is installed at the top of the frame, the hot side air outlet pipe is installed at the bottom of the frame, the cold side air inlet pipe is installed on the left side of the frame, and the cold side air outlet pipe is installed on the right side of the frame. According to the waste heat recovery heat exchanger of the spray drying system, the waste heat recovery heat exchanger can be cleaned on line by adopting a high-pressure air pump blowing mode aiming at the working conditions with large viscosity and dust, so that the shutdown maintenance time can be effectively shortened, the service time of the heat exchanger is prolonged, and the productivity benefit is increased.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery, in particular to a waste heat recovery heat exchanger for a spray drying system. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers.

[0003] Traditionally, bare tube or finned tube heat exchangers have been used, resulting in high equipment costs, large size, and inconvenient installation. They can become severely clogged and difficult to clean in dusty environments.

[0004] Therefore, it is necessary to propose a waste heat recovery heat exchanger for a spray drying system to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a waste heat recovery heat exchanger for a spray drying system, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A waste heat recovery heat exchanger for a spray drying system comprises a frame, an air pipe being installed on the outer wall of the frame, a plate air-to-air heat exchanger being installed in the inner cavity of the frame, one end of the plate air-to-air heat exchanger being movably connected to a high-pressure air pump, movable doors being symmetrically installed at both ends of the frame, and the outer wall of the movable door on the side away from the high-pressure air pump being fitted with a limiting pile.

[0008] Preferably, the air pipe includes a hot side air inlet pipe, a hot side air outlet pipe, a cold side air inlet pipe, and a cold side air outlet pipe. The hot side air inlet pipe is installed on the top of the frame, the hot side air outlet pipe is installed on the bottom of the frame, the cold side air inlet pipe is installed on the left side of the frame, and the cold side air outlet pipe is installed on the right side of the frame. The opposite sides of the hot side air inlet pipe, the hot side air outlet pipe, the cold side air inlet pipe, and the cold side air outlet pipe are all installed on the outer wall of the plate air-to-air heat exchanger and communicate with its inner cavity.

[0009] Preferably, a dustproof net is installed in the center of one side of the movable door, a connecting frame is rotatably connected to the side of the frame inner cavity close to the dustproof net, and a handle is installed in the center of the bottom of the connecting frame.

[0010] Preferably, a movable groove is opened in the middle of the connecting frame near the side of the high-pressure air pump, a screw rod is rotatably connected in the inner cavity of the movable groove, a servo motor is installed on the side of the connecting frame, and the servo motor is installed on the side of the screw rod through a rotating shaft, and a movable block is installed at the bottom of the high-pressure air pump, and the outer wall of the movable block is movably connected in the inner cavity of the movable groove and is threadedly connected to the outer wall of the screw rod.

[0011] Preferably, the top of the movable door away from the high-pressure air pump is rotatably connected to the inner cavity of the frame, a limiting component is inserted into the inner cavity of the frame, the limiting pile is rotatably connected to the inner cavity at the top of the limiting component, and a pull handle is installed at the end of the limiting component away from the frame.

[0012] Preferably, a fixing column is installed in the inner cavity of the frame, a spring is wound around the outer wall of the fixing column, a limiting block is installed on the other end of the spring, the limiting assembly is sleeved on the outer wall of the fixing column, the limiting assembly is movably connected in the inner cavity of the frame, the other end of the spring is installed in the inner cavity of the limiting assembly, and the limiting block is movably connected in the inner cavity of the limiting assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The waste heat recovery heat exchanger of the spray drying system uses a plate-to-gas heat exchanger, which allows the exhaust gas to flow through the plates from top to bottom in a direct channel. The channel distance is selected at different intervals according to the gas composition of the working conditions, which can effectively reduce the risk of blockage and increase the service life of the heat exchanger. For working conditions with high viscosity and dust, it can be cleaned by blowing with a high-pressure air pump, thereby reducing downtime for maintenance, increasing the service life of the heat exchanger, and increasing production capacity benefits.

[0015] 2. The waste heat recovery heat exchanger of the spray drying system can adjust the angle of the high-pressure air pump through the connecting frame through the provided handle. When cleaning the plate air-to-air heat exchanger, the high-pressure air pump can be adjusted to a suitable angle. After starting the high-pressure air pump, the plate air-to-air heat exchanger can be cleaned. By starting the provided servo motor, the screw rod can be driven to rotate so that the movable block can be threadedly connected to the screw rod. At this time, the high-pressure air pump can be driven to move left and right, thereby increasing the cleaning range of the plate air-to-air heat exchanger by the high-pressure air pump.

[0016] 3. The waste heat recovery heat exchanger of the spray drying system can play a limiting role when it is attached to the movable door through the limit pile. When the plate air-to-air heat exchanger needs to be cleaned, the movable door can be rotated to the side. At this time, the movable door can be opened to facilitate the removal of waste chips blown out by the high-pressure air pump from the inner cavity of the frame. When the limit pile limits the movable door, the limit pile can be contracted at any time by the spring, which can improve the tightness of the limit on the movable door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0018] Figure 2 It is a structural schematic diagram of the inner cavity of the utility model;

[0019] Figure 3 It is a structural diagram of the movable block of the utility model;

[0020] Figure 4 It is a structural diagram of the limit assembly of the utility model.

[0021] In the figure: 1. Frame; 2. Air pipe; 3. Movable door; 4. Dust screen; 5. Plate-to-air heat exchanger; 6. High-pressure air pump; 7. Movable block; 8. Screw rod; 9. Connecting frame; 10. Servo motor; 11. Handle; 12. Limit assembly; 13. Limit pile; 14. Pull handle; 15. Limit block; 16. Spring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] Example 1:

[0024] like Figure 1-Figure 4As shown, a waste heat recovery heat exchanger for a spray drying system includes a frame 1, an air pipe 2 is installed on the outer wall of the frame 1, a plate air-to-air heat exchanger 5 is installed in the inner cavity of the frame 1, one end of the plate air-to-air heat exchanger 5 is movably connected to a high-pressure air pump 6, and movable doors 3 are symmetrically installed at both ends of the frame 1. The outer wall of the movable door 3 on the side away from the high-pressure air pump 6 is fitted with a limit pile 13, and the air pipe 2 includes a hot side air inlet pipe, a hot side air outlet pipe, a cold side air inlet pipe, and a cold side air outlet pipe. The hot side air inlet pipe is installed on the top of the frame 1. The hot side air outlet pipe is installed at the bottom of the frame 1, the cold side air inlet pipe is installed on the left side of the frame 1, and the cold side air outlet pipe is installed on the right side of the frame 1. The hot side air inlet pipe, the hot side air outlet pipe, the cold side air inlet pipe, and the cold side air outlet pipe are installed on the outer wall of the plate air-to-air heat exchanger 5 and communicate with its inner cavity. A dustproof net 4 is installed in the middle of the movable door 3 on one side. A connecting frame 9 is rotatably connected to the side of the inner cavity of the frame 1 close to the dustproof net 4. A handle 11 is installed in the middle of the bottom of the connecting frame 9. The connecting frame 9 is close to the high-pressure gas A movable groove is provided in the middle of one side of the pump 6, and a screw rod 8 is rotatably connected in the inner cavity of the movable groove. A servo motor 10 is installed on the side of the connecting frame 9. The servo motor 10 is installed on the side of the screw rod 8 through a rotating shaft. A movable block 7 is installed at the bottom of the high-pressure air pump 6. The outer wall of the movable block 7 is movably connected to the inner cavity of the movable groove and is threadedly connected to the outer wall of the screw rod 8. The top of the movable door 3 away from the high-pressure air pump 6 is rotatably connected to the inner cavity of the frame 1. A limiting component 12 is inserted into the inner cavity of the frame 1, and a limiting pile 1 3 is rotatably connected to the inner cavity at the top of the limit assembly 12. A pull handle 14 is installed at the end of the limit assembly 12 away from the frame 1. A fixed column is installed in the inner cavity of the frame 1. A spring 16 is wound around the outer wall of the fixed column. A limit block 15 is installed at the other end of the spring 16. The limit assembly 12 is sleeved on the outer wall of the fixed column. The limit assembly 12 is movably connected to the inner cavity of the frame 1. The other end of the spring 16 is installed in the inner cavity of the limit assembly 12. The limit block 15 is movably connected to the inner cavity of the limit assembly 12.

[0025] By using the plate-gas heat exchanger 5, the exhaust gas passes through the plate from top to bottom in a direct channel, and the channel distance is selected at different intervals according to the gas composition of the working conditions, which can effectively reduce the risk of blockage and increase the service life of the heat exchanger. For working conditions with relatively high viscosity and dust, it can be cleaned by blowing air through the high-pressure air pump 6, thereby reducing downtime for maintenance, increasing the service life of the heat exchanger, and increasing production capacity benefits. Through the provided handle 11, the high-pressure air pump 6 can be driven by the connecting frame 9 to adjust the angle. When cleaning the plate-gas heat exchanger 5, the high-pressure air pump 6 can be adjusted to a suitable angle. After starting the high-pressure air pump 6, the plate-gas heat exchanger 5 can be cleaned. By starting The servo motor 10 is set up, which can drive the screw rod 8 to rotate, so that the movable block 7 can be threadedly connected to the screw rod 8. At this time, the high-pressure air pump 6 can be driven to move left and right, thereby increasing the cleaning range of the plate-to-air heat exchanger 5 by the high-pressure air pump 6. The limit pile 13 is set up, and when it is attached to the movable door 3, it can play a limiting effect. When the plate-to-air heat exchanger 5 needs to be cleaned, the movable door 3 can be rotated sideways. At this time, the movable door 3 can be opened, which is convenient for removing the waste chips blown out by the high-pressure air pump 6 from the inner cavity of the frame 1. When the limit pile 13 limits the movable door 3, the limit pile 13 can be contracted at any time by the set spring 16, which can improve the tightness of the limit on the movable door 3.

[0026] It should be noted that the utility model is a waste heat recovery heat exchanger for a spray drying system. When in use, the air pipe 2 can be used for the entry and exit of hot and cold air. When the plate air-to-air heat exchanger 5 needs to be cleaned, the limit pile 13 is rotated sideways so that the limit pile 13 can be separated from the outer wall of one of the movable doors 3, and the servo motor 10 is started to drive the screw rod 8 to rotate so that the movable block 7 can be threadedly connected to the screw rod 8. At this time, the movable block 7 can drive the high-pressure air pump 6 to move. After moving to the appropriate position, the angle of the high-pressure air pump 6 is operated by the handle 11, and the high-pressure air pump 6 is started to clean the plate air-to-air heat exchanger 5.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery heat exchanger for a spray drying system, comprising a frame (1), characterized in that: An air pipe (2) is installed on the outer wall of the frame (1), a plate-type air-to-air heat exchanger (5) is installed in the inner cavity of the frame (1), one end of the plate-type air-to-air heat exchanger (5) is movably connected to a high-pressure air pump (6), and movable doors (3) are symmetrically installed at both ends of the frame (1), and the outer wall of the movable door (3) on the side away from the high-pressure air pump (6) is fitted with a limiting pile (13).

2. The waste heat recovery heat exchanger for a spray drying system according to claim 1, characterized in that: The air pipe (2) includes a hot side air inlet pipe, a hot side air outlet pipe, a cold side air inlet pipe, and a cold side air outlet pipe. The hot side air inlet pipe is installed on the top of the frame (1), the hot side air outlet pipe is installed on the bottom of the frame (1), the cold side air inlet pipe is installed on the left side of the frame (1), and the cold side air outlet pipe is installed on the right side of the frame (1). The hot side air inlet pipe, the hot side air outlet pipe, the cold side air inlet pipe, and the cold side air outlet pipe are installed on the outer wall of the plate air-to-air heat exchanger (5) and communicate with its inner cavity.

3. The waste heat recovery heat exchanger for a spray drying system according to claim 1, characterized in that: A dust screen (4) is installed in the center of the movable door (3) on one side, and a connecting frame (9) is rotatably connected to the side of the inner cavity of the frame (1) close to the dust screen (4), and a handle (11) is installed in the center of the bottom of the connecting frame (9).

4. The waste heat recovery heat exchanger for a spray drying system according to claim 3, characterized in that: A movable groove is provided in the middle of the connecting frame (9) near the side of the high-pressure air pump (6), and a screw rod (8) is rotatably connected in the inner cavity of the movable groove. A servo motor (10) is installed on the side of the connecting frame (9), and the servo motor (10) is installed on the side of the screw rod (8) through a rotating shaft. A movable block (7) is installed at the bottom of the high-pressure air pump (6), and the outer wall of the movable block (7) is movably connected in the inner cavity of the movable groove and is threadedly connected to the outer wall of the screw rod (8).

5. The waste heat recovery heat exchanger for a spray drying system according to claim 1, characterized in that: The top of the movable door (3) away from the high-pressure air pump (6) is rotatably connected to the inner cavity of the frame (1), a limiting component (12) is inserted into the inner cavity of the frame (1), the limiting pile (13) is rotatably connected to the inner cavity at the top of the limiting component (12), and a pull handle (14) is installed at one end of the limiting component (12) away from the frame (1).

6. The waste heat recovery heat exchanger for a spray drying system according to claim 5, characterized in that: A fixing column is installed in the inner cavity of the frame (1), a spring (16) is wound around the outer wall of the fixing column, a limiting block (15) is installed on the other end of the spring (16), the limiting component (12) is sleeved on the outer wall of the fixing column, the limiting component (12) is movably connected in the inner cavity of the frame (1), the other end of the spring (16) is installed in the inner cavity of the limiting component (12), and the limiting block (15) is movably connected in the inner cavity of the limiting component (12).

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