Flash drying heat recovery mechanism

Abstract

The utility model provides a flash drying heat recovery mechanism, which relates to the field of flash drying processing and comprises a base, a flash drying tower body is arranged at the top of one side of the base, a heat insulation box is arranged at the top of the other side of the base, and a water tank is mounted on the inner wall of the heat insulation box. A water inlet pipe is installed at the top of the water tank, the top end of the water tank penetrates through the heat insulation box, a water outlet pipe is installed at the bottom of the water tank, the bottom end of the water tank penetrates through the heat insulation box, a coiled pipe is wound around the outer wall of the water tank, and an air pump body is arranged on one side of the heat insulation box; the first filter plate, the second filter plate and the third filter plate are arranged, tail gas can be conveniently filtered and purified many times, the situation that the environment is polluted by follow-up emission of the tail gas is reduced, the air extracting pump body, the exhaust pipe, the connecting pipe, the coiled pipe and the air extracting pipe are arranged, and therefore water in the water tank is heated; and heat energy in the tail gas can be conveniently utilized, and a large amount of heat energy loss caused by direct emission is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flash drying processing, in particular to a flash drying heat recovery mechanism. Background Art

[0002] Flash drying is a process in which wet materials are dispersed into a hot air (or gas) flow passing through a drying pipe, and the heat of the air flow is used to dry the transported materials. This process is particularly suitable for drying filter cakes, pastes, and slurries. In the process of flash drying of materials by a flash dryer, there is a large heat loss in the tail gas, which requires the use of a heat recovery mechanism.

[0003] As shown in application number 201822022838.7, the utility model discloses "a heat exchanger for airflow drying heat recovery", including a shell, three support columns are provided on the lower side of the shell, the support columns are connected to support foot pads, an air inlet is provided on the lower side of the shell, an air distribution plate is connected to the lower side inside the shell, the air distribution plate is provided with a plurality of air distribution holes, a plurality of drying plates are provided inside the shell, the drying plates are provided with a plurality of fine holes, a drying net is provided on the upper side of the drying plates, a feed port and a discharge port are provided on the shell, the feed port and the discharge port correspond to the drying plates, a plurality of blowing holes are provided on the shell, an air outlet is provided on the upper side of the shell, the air outlet is connected to an air outlet pipe, the air outlet pipe is connected to a gas water absorption structure, the water absorption structure is connected to a gas heater, the output end of the gas heater is connected to a gas circulation pump, and the gas The input end of the circulation pump is connected to a gas replenishment tank, and the output end of the gas circulation pump is connected to a gas distribution box. The gas distribution box is provided with a plurality of gas distribution pipes. The heat exchanger can recycle the inert gas, thereby saving costs, and can heat the heated inert gas again after passing into the shell before the heat drops very low, thereby saving energy. However, the existing heat exchanger will generate exhaust gas during use. Since the exhaust gas contains impurity particles and harmful substances, the existing heat exchanger cannot filter and purify the exhaust gas. The exhaust gas is directly heated repeatedly by a gas heater, which is easy to cause pollution to the dry material, resulting in poor heat recovery effect. Therefore, the utility model proposes a flash drying heat recovery mechanism to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model proposes a flash drying heat recovery mechanism, which facilitates multiple filtration and purification of exhaust gas by setting a first filter plate, a second filter plate and a third filter plate, thereby reducing the pollution to the environment caused by subsequent exhaust gas emissions. An exhaust pump body, an exhaust pipe, a connecting pipe, a serpentine pipe and an exhaust pipe are set to heat the water in the water tank, thereby facilitating the utilization of heat energy in the exhaust gas and avoiding a large amount of heat energy loss caused by direct emissions.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a flash drying heat recovery mechanism, including a base, a flash drying tower body is arranged on the top of one side of the base, an insulation box is arranged on the top of the other side of the base, a water tank is installed on the inner wall of the insulation box, a water inlet pipe is installed on the top of the water tank and the top end passes through the insulation box, a water outlet pipe is installed on the bottom of the water tank and the bottom end passes through the insulation box, a serpentine pipe is wrapped around the outer wall of the water tank, an exhaust pump body is arranged on one side of the insulation box, an exhaust pipe is installed on the bottom of the exhaust pump body and one end passes through the insulation box, a filter box is arranged on the top of the insulation box, a connecting pipe is installed on the bottom of the filter box and one end passes through the insulation box, an exhaust pipe is installed on one side of the filter box and one end passes through the flash drying tower body, three through holes are opened on the other side of the filter box, and the inner wall of the through hole is penetrated by a first filter plate.

[0006] A sealing plate is installed on one side of the first filter plate, bolts penetrate the inner walls on both sides of the sealing plate, a second filter plate is arranged on the inner wall of the filter box below the first filter plate, and a third filter plate is arranged on the inner wall of the filter box below the second filter plate.

[0007] A further improvement is that the water tank and the serpentine pipe are connected in a winding manner, and both ends of the serpentine pipe are connected to the air extraction pipe and the connecting pipe.

[0008] A further improvement is that the exhaust pipe is connected to the filter box and the flash drying tower body, and the filter box and the through hole are integrated.

[0009] A further improvement is that the first filter plate is detachably connected to the through hole, and a coarse filter screen is provided on the inner wall of the first filter plate.

[0010] A further improvement is that the bolts are threadedly connected to the sealing plate and the filter box, and the sealing plate and the first filter plate are tightly fitted.

[0011] A further improvement is that the inner wall of the second filter plate is provided with a fine filter screen, and the inner wall of the third filter plate is provided with an activated carbon filter element.

[0012] The beneficial effects of the utility model are as follows: the utility model provides a first filter plate, a second filter plate and a third filter plate, so as to facilitate multiple filtering and purification of the exhaust gas, reduce the pollution to the environment caused by the subsequent emission of the exhaust gas, and provide an exhaust pump body, an exhaust pipe, a connecting pipe, a serpentine pipe and an exhaust pipe, so as to heat the water in the water tank, facilitate the utilization of the heat energy in the exhaust gas, and avoid a large amount of heat energy loss caused by direct emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic diagram of the front cross-sectional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front view structure of the water tank of the utility model;

[0015] Figure 3 This is a schematic diagram of the front view structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the first filter plate of the utility model;

[0017] Figure 5 For this utility model Figure 1 Enlarged view of point A in the middle.

[0018] In the figure: 1. base; 2. flash drying tower body; 3. heat insulation box; 4. water tank; 5. water inlet pipe; 6. water outlet pipe; 7. vacuum pump body; 8. vacuum pipe; 9. serpentine pipe; 10. filter box; 11. connecting pipe; 12. exhaust pipe; 13. through hole; 14. first filter plate; 15. sealing plate; 16. bolts; 17. second filter plate; 18. third filter plate. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0020] according to Figure 1-5 As shown, this embodiment proposes a flash drying heat recovery mechanism, including a base 1, a flash drying tower body 2 is arranged on the top of one side of the base 1, an insulation box 3 is arranged on the top of the other side of the base 1, a water tank 4 is installed on the inner wall of the insulation box 3, a water inlet pipe 5 is installed on the top of the water tank 4 and the top end passes through the insulation box 3, a water outlet pipe 6 is installed on the bottom of the water tank 4 and the bottom end passes through the insulation box 3, a serpentine pipe 9 is wound around the outer wall of the water tank 4, an exhaust pump body 7 is arranged on one side of the insulation box 3, an exhaust pipe 8 is installed on the bottom of the exhaust pump body 7 and one end passes through the insulation box 3, a filter box 10 is arranged on the top of the insulation box 3, a connecting pipe 11 is installed on the bottom of the filter box 10 and one end passes through the insulation box 3, an exhaust pipe 12 is installed on one side of the filter box 10 and one end passes through the flash drying tower body 2, and three through holes 13 are opened on the other side of the filter box 10, and the inner wall of the through hole 13 passes through the first filter plate 14.

[0021] A sealing plate 15 is installed on one side of the first filter plate 14, and bolts 16 penetrate the inner walls of the upper and lower sides of the sealing plate 15. A second filter plate 17 is arranged on the inner wall of the filter box 10 below the first filter plate 14, and a third filter plate 18 is arranged on the inner wall of the filter box 10 below the second filter plate 17. When the device is in use, the staff starts the vacuum pump body 7 through the external control panel, so that the exhaust gas generated in the flash drying tower body 2 is transported to the filter box 10 through the exhaust pipe 12, so that the exhaust gas first passes through the coarse filter screen in the first filter plate 14, which is made of polyester synthetic fiber and is convenient for filtering dust particles with a diameter of more than five μm, thereby preliminarily filtering larger dust particles in the exhaust gas, so that the exhaust gas after preliminary filtration passes through the fine filter screen in the second filter plate 17, which is made of chemical fiber or glass fiber and is convenient for filtering dust particles with a diameter of more than 0.5 μm, and has a very high filtration accuracy, thereby The smaller particles of smoke or dust in the exhaust gas are filtered twice, and then the exhaust gas after the secondary filtration passes through the activated carbon filter element in the third filter plate 18, using the activated carbon as an adsorbent, so that the exhaust gas is filtered and purified multiple times, reducing the pollution to the environment caused by subsequent exhaust gas emissions, and the filtered and purified exhaust gas enters the serpentine tube 9 through the connecting pipe 11, and the serpentine tube 9 is set to be made of stainless steel with a heat conductive effect, so that the serpentine tube 9 absorbs the heat in the exhaust gas to heat the water in the water tank 4, and the exhaust gas after heat absorption enters the exhaust pump body 7 through the exhaust pipe 8 for discharge, so as to facilitate the utilization of the heat energy in the exhaust gas and avoid a large amount of heat energy loss caused by direct discharge. After the filter box 10 has been used for a period of time, each bolt 16 is manually pulled out, so that each sealing plate 15 drives the corresponding first filter plate 14, the second filter plate 17 or the third filter plate 18 to be taken out, cleaned or replaced through the corresponding through hole 13.

[0022] The water tank 4 and the serpentine tube 9 are wound and connected, and the two ends of the serpentine tube 9 are connected to the exhaust pipe 8 and the connecting pipe 11. The exhaust gas after filtration and purification enters the serpentine tube 9 through the connecting pipe 11. The serpentine tube 9 is set to be made of stainless steel, which has a heat conductive effect, so that the serpentine tube 9 absorbs the heat in the exhaust gas to heat the water in the water tank 4.

[0023] The exhaust pipe 12 is connected to the filter box 10 and the flash drying tower body 2, and the filter box 10 and the through hole 13 are integrated. The vacuum pump body 7 is started through the external control panel to transport the exhaust gas generated in the flash drying tower body 2 to the filter box 10 through the exhaust pipe 12.

[0024] The first filter plate 14 is connected to the through hole 13 for disassembly. The inner wall of the first filter plate 14 is provided with a coarse filter screen. The exhaust gas first passes through the coarse filter screen inside the first filter plate 14, which is made of polyester synthetic fiber and is convenient for filtering dust particles with a diameter of more than 5 μm.

[0025] The bolts 16 are threadedly connected to the sealing plate 15 and the filter box 10, and the sealing plate 15 and the first filter plate 14 are tightly fitted. By manually pulling out each bolt 16, each sealing plate 15 drives the corresponding first filter plate 14, the second filter plate 17 or the third filter plate 18 connected to it to be taken out, cleaned or replaced through the corresponding through hole 13.

[0026] The inner wall of the second filter plate 17 is provided with a fine filter screen, and the inner wall of the third filter plate 18 is provided with an activated carbon filter element. The exhaust gas after preliminary filtration passes through the fine filter screen inside the second filter plate 17, which is made of chemical fiber or glass fiber, and is convenient for filtering dust particles with a diameter of more than 0.5 μm, and has a high filtering accuracy.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] When the flash drying heat recovery mechanism is in use, the staff manually adds water into the water tank 4 through the water inlet pipe 5. After adding a proper amount of water into the water tank 4, the vacuum pump body 7 is started through the external control panel to transport the exhaust gas generated in the flash drying tower body 2 to the filter box 10 through the exhaust pipe 12. The exhaust gas first passes through the coarse filter screen in the first filter plate 14, which is made of polyester synthetic fiber and is convenient for filtering dust particles with a diameter of more than five μm, thereby performing preliminary filtering on larger particles of dust in the exhaust gas, and the exhaust gas after preliminary filtration passes through the fine filter screen in the second filter plate 17, which is made of chemical fiber or glass fiber and is convenient for filtering dust particles with a diameter of more than 0.5 μm, and has a very high filtration accuracy, thereby performing secondary filtration on smaller particles of smoke or dust in the exhaust gas, and then the exhaust gas after the secondary filtration After passing through the activated carbon filter element in the third filter plate 18, activated carbon is used as an adsorbent to filter and purify the exhaust gas for multiple times, thereby reducing the pollution to the environment caused by subsequent exhaust gas emissions, and allowing the filtered and purified exhaust gas to enter the serpentine tube 9 through the connecting pipe 11. The serpentine tube 9 is set to be made of stainless steel with a heat-conducting effect, so that the serpentine tube 9 absorbs the heat in the exhaust gas to heat the water in the water tank 4, and the exhaust gas after absorbing heat enters the exhaust pump body 7 through the exhaust pipe 8 for discharge, which is convenient for utilizing the heat energy in the exhaust gas and avoiding a large amount of heat energy loss caused by direct discharge. After the filter box 10 has been used for a period of time, each bolt 16 is manually pulled out, so that each sealing plate 15 drives the corresponding first filter plate 14, the second filter plate 17 or the third filter plate 18 to be taken out, cleaned or replaced through the corresponding through hole 13.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A flash drying heat recovery mechanism, characterized in that: The invention comprises a base (1), a flash drying tower body (2) is arranged on the top of one side of the base (1), a heat insulation box (3) is arranged on the top of the other side of the base (1), a water tank (4) is installed on the inner wall of the heat insulation box (3), a water inlet pipe (5) is installed on the top of the water tank (4) and the top end thereof passes through the heat insulation box (3), a water outlet pipe (6) is installed on the bottom of the water tank (4) and the bottom end thereof passes through the heat insulation box (3), a serpentine pipe (9) is wound around the outer wall of the water tank (4), and a vacuum pump body (1) is arranged on one side of the heat insulation box (3). 7), an air extraction pipe (8) is installed at the bottom of the air extraction pump body (7), and one end of the pipe passes through the heat insulation box (3); a filter box (10) is arranged on the top of the heat insulation box (3); a connecting pipe (11) is installed at the bottom of the filter box (10), and one end of the pipe passes through the heat insulation box (3); an exhaust pipe (12) is installed on one side of the filter box (10), and one end of the pipe passes through the flash drying tower body (2); three through holes (13) are opened on the other side of the filter box (10); and a first filter plate (14) passes through the inner wall of the through hole (13); A sealing plate (15) is installed on one side of the first filter plate (14), and bolts (16) are inserted through the inner walls of the upper and lower sides of the sealing plate (15). A second filter plate (17) is arranged on the inner wall of the filter box (10) below the first filter plate (14), and a third filter plate (18) is arranged on the inner wall of the filter box (10) below the second filter plate (17).

2. A flash drying heat recovery mechanism according to claim 1, characterized in that: The water tank (4) and the serpentine tube (9) are connected in a winding manner, and the two ends of the serpentine tube (9) are connected to the air extraction tube (8) and the connecting tube (11).

3. A flash drying heat recovery mechanism according to claim 1, characterized in that: The exhaust pipe (12) is connected to the filter box (10) and the flash drying tower body (2), and the filter box (10) and the through hole (13) are integrally arranged.

4. A flash drying heat recovery mechanism according to claim 1, characterized in that: The first filter plate (14) and the through hole (13) are detachably connected, and a coarse filter screen is provided on the inner wall of the first filter plate (14).

5. The flash drying heat recovery mechanism according to claim 1, characterized in that: The bolt (16) is threadedly connected to the sealing plate (15) and the filter box (10), and the sealing plate (15) and the first filter plate (14) are tightly fitted.

6. A flash drying heat recovery mechanism according to claim 1, characterized in that: The inner wall of the second filter plate (17) is provided with a fine filter screen, and the inner wall of the third filter plate (18) is provided with an activated carbon filter element.

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