A symmetrical sludge dryer air duct with heat pipe

Abstract

The present invention discloses a symmetrical air duct of a sludge drying machine with a heat pipe, including an equipment housing, two symmetrical groups of air duct bodies are arranged inside the equipment housing, and the outlets of the two groups of air duct bodies are gathered at the air outlet of the equipment housing, a return air duct is arranged above the inlet end of the air duct body, and the air duct body is sequentially provided with a water meter cooler and a vertically placed evaporator from the inlet end to the outlet end. The air duct body of the device has a simple structure and fewer turns, which reduces the resistance to the internal circulating air, thereby improving the circulation effect of the air duct, and at the same time enables the fan to operate with less power, reducing costs. A primary filter, a medium-efficiency filter, and a high-efficiency filter are arranged inside the return air duct, and dust in the air can be filtered and removed through each filter. At the same time, since each return air duct is modularly arranged, it is convenient to inspect and clean the internal filter.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, in particular to a symmetrical sludge drying machine air duct with heat pipes. Background Art

[0002] With the advancement of science and technology, urban sewage needs to be recycled and reused. When sewage is recycled and reused, a sludge dryer is needed to dry the sludge in the sewage. In the process of drying the sludge, due to the large number of bends in the air duct, the resistance of air circulation inside the duct is large, and the energy consumption is relatively high. The sludge drying automation production equipment with publication number CN108046563B drives the formed sludge through the area with hot air flow through the mesh belt structure to dry it, so as to achieve the purpose of thorough sludge drying. The hot air circulation system drives the hot air to circulate in the drying chamber and the dehumidification chamber, and the hot air is dehumidified and then used for drying again. The energy utilization is high, and the sludge is fully dried. The processing cost is greatly reduced, the symmetrical arrangement of the dehumidification and drying channels makes the hot air drying efficiency high, the air inlet channel and the air outlet channel are arranged perpendicular to each other, and the space of the dehumidification chamber is fully utilized, so that the structure of the dehumidification chamber is more compact and the footprint of the equipment is reduced. At the same time, the dehumidification and drying channels used to dry the hot air are shorter, which reduces the energy loss of the hot air during the drying process and further improves the energy utilization rate. However, there is still a problem in the internal structure of the circulating air duct of the sludge dryer, and the air flow resistance of the air duct distributed up and down is large and the air flow is not strong, which makes the impact and harm brought by dust particles and odor more serious, and for the existing filter, the efficiency of dust filtration is low and it is not easy to repair and clean. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a symmetrical sludge drying machine air duct with heat pipes.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a symmetrical air duct of a sludge dryer with a heat pipe, comprising an equipment housing, wherein two symmetrical groups of air duct bodies are arranged inside the equipment housing, and the outlets of the two groups of the air duct bodies are gathered at the air outlet of the equipment housing;

[0005] A return air duct is arranged above the inlet end of the air duct body, and a primary filter, a medium filter and a high efficiency filter are arranged in sequence from one end to the other end of the return air duct;

[0006] The air duct main body is provided with a water meter cooler and a vertically placed evaporator in sequence from the inlet end to the outlet end.

[0007] As a further description of the above technical solution: a heat pipe condensing end and a heat pipe evaporating end are respectively arranged on both sides of the evaporator.

[0008] As a further description of the above technical solution: a centrifugal fan for discharging the heated gas is arranged inside the air outlet.

[0009] As a further description of the above technical solution: a horizontally placed bottom condenser is also provided between the air duct main body and the air outlet.

[0010] As a further description of the above technical solution: a second air duct is also arranged inside the device shell, a horizontally placed top condenser is arranged at the upper end of the second air duct, and the second air duct is communicated with the outside through an axial flow fan arranged inside the second air duct.

[0011] As a further description of the above technical solution: a water receiving tray is provided at the lower end of the evaporator, and the water receiving tray discharges condensed water through a water pipe at the lower end.

[0012] As a further description of the above technical solution: the primary filter is arranged obliquely inside the return air duct.

[0013] As a further description of the above technical solution: a compressor is arranged inside the device housing.

[0014] As a further description of the above technical solution: an observation door is opened on the outside of the equipment shell, and the primary filter, the medium filter, the high efficiency filter, the evaporator, the bottom condenser, the top condenser and the compressor are all close to the observation door.

[0015] As a further description of the above technical solution: the interior of the equipment housing also includes a third air duct, and the third air duct is located at the upper end of the air outlet and is connected to a position in the return air duct close to the primary filter.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention has a simple structure of the air duct body and fewer turns, which reduces the resistance to the internal circulating air, thereby improving the circulation effect of the air duct and enabling the fan to operate with less power, thereby reducing costs.

[0018] 2. The present invention arranges symmetrical double air ducts to make the entire device compact and simple in structure, which can reduce space occupancy while maintaining a good circulation effect. At the same time, a heat pipe evaporation end and a heat pipe condensation section are respectively arranged in front and behind the evaporator, so that the dehumidification effect is better and more energy-saving. A water meter cooler is arranged at the front end of the evaporator, which can cool the air and improve the dehumidification effect. A condenser is arranged at the rear end of the evaporator, which can effectively increase the heat exchange capacity.

[0019] 3. The present invention is provided with a primary filter, a medium filter, and a high efficiency filter inside the return air duct, and dust in the air can be filtered and removed through each filter. At the same time, since each return air duct is modularly arranged, it is convenient to inspect and clean the internal filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a symmetrical sludge drying machine air duct with heat pipes proposed by the present invention;

[0021] Figure 2 The present invention provides a cross-sectional view of an air duct of a symmetrical sludge dryer with heat pipes.

[0022] Legend:

[0023] 1. Equipment shell; 2. Air duct body; 3. Air outlet; 4. Return air duct; 5. Primary filter; 6. Medium filter; 7. High efficiency filter; 8. Water meter cooler; 9. Evaporator; 10. Heat pipe condensing end; 11. Heat pipe evaporating end; 12. Centrifugal fan; 13. Bottom condenser; 15. Second air duct; 16. Top condenser; 17. Axial fan; 18. Water tray; 19. Compressor; 20. Third air duct. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Reference Figure 1-Figure 2 The present invention provides an embodiment: a symmetrical air duct of a sludge dryer with a heat pipe, comprising an equipment housing 1, wherein two symmetrical groups of air duct bodies 2 are arranged inside the equipment housing 1, and the air duct bodies 2 have a simple structure and a small number of turns, thereby reducing the air resistance therein, improving the circulation effect of the air duct, and reducing the power of the centrifugal fan 12 when working, and the outlets of the two groups of air duct bodies 2 are gathered at the air outlet 3 of the equipment housing 1;

[0027] A return air duct 4 is arranged above the inlet end of the air duct body 2, and a primary filter 5, a medium-efficiency filter 6 and a high-efficiency filter 7 are arranged in sequence from one end to the other end of the return air duct 4;

[0028] The air duct body 2 is provided with a water meter cooler 8 and a vertically placed evaporator 9 in sequence from the inlet end to the outlet end.

[0029] According to the above technical solution, the gas passes through the lower mesh bag inside the third air duct and the second mesh bag at the upper end thereof and then enters the return air duct 4. A primary filter 5, a medium-efficiency filter 6 and a high-efficiency filter 7 are arranged in sequence from one end to the other inside the return air duct 4, which can filter the dust in the circulating gas, reduce the overall maintenance times for the dryer air duct, and reduce the cost. At the same time, the above filters are all arranged in the return air duct 4, and the return air duct 4 is arranged at the upper end of the equipment housing 1. Each return air duct 4 is a separate modular arrangement, which is convenient for cleaning the internal filter, and the airflows coming out of the two return air ducts 4 enter the two return air ducts 4 respectively. In the symmetrical air duct main body 2, a water meter cooler 8 is arranged at the upper end of the air duct main body 2, which can cool the airflow. The cooled airflow flows downward along the air duct main body 2, and the air is cooled again by the heat pipe evaporation end 11 arranged inside the air duct main body 2, and then enters the evaporator 9 for cooling and dehumidification. After dehumidification, it is heated again by the heat pipe condensation end 10. After the air inside the left and right air duct main bodies 2 is merged, it enters the bottom condenser 13 for heating again, and then circulates to the air outlet 3 through the centrifugal fan 12 to dry the sludge. The air after the sludge is dried enters the return air duct 4 again for further circulation.

[0030] Furthermore, a heat pipe condensing end 10 and a heat pipe evaporating end 11 are respectively provided on both sides of the evaporator 9 .

[0031] Furthermore, a centrifugal fan 12 is disposed inside the air outlet 3 for discharging the heated gas.

[0032] Furthermore, a horizontally placed bottom condenser 13 is provided between the air duct body 2 and the air outlet 3 .

[0033] Furthermore, a second air duct 15 is provided inside the equipment housing 1, and a horizontally placed top condenser 16 is provided at the upper end of the second air duct 15. The second air duct 15 is connected to the outside through an axial flow fan 17 provided inside the second air duct 15.

[0034] Furthermore, a water receiving pan 18 is provided at the lower end of the evaporator 9. The water receiving pan 18 discharges condensed water through a water pipe at the lower end, so that the condensed water generated when the evaporator 9 is working can be discharged to the outside in a timely and effective manner.

[0035] Furthermore, the primary filter 5 is tiltedly arranged inside the return air duct 4, so that dust in the filter can fall off more easily and automatically.

[0036] Furthermore, a compressor 19 is disposed inside the device housing 1 .

[0037] Furthermore, an observation door is provided on the outside of the equipment housing 1, and the primary filter 5, the medium filter 6, the high efficiency filter 7, the evaporator 9, the bottom condenser 13, the top condenser 16 and the compressor 19 are all close to the observation door, so as to facilitate the inspection and maintenance of the internal components.

[0038] Furthermore, the interior of the equipment housing 1 also includes a third air duct 20, and the third air duct 20 is at the upper end of the air outlet 3, and is connected to the position of the return air duct 4 near the primary filter 5. The interior of the third air duct 20 is provided with a lower mesh bag and a second mesh bag, and the air enters the return air duct 4 again after passing through the two mesh bags.

[0039] Working principle: When the device is in use, the gas passes through the lower mesh bag inside the third air duct 20 and the second mesh bag at the upper end thereof and then enters the return air duct 4. Inside the return air duct 4, a primary filter 5, a medium-efficiency filter 6 and a high-efficiency filter 7 are arranged in sequence from one end to the other, which can filter the dust in the circulating gas, reduce the overall maintenance times for the dryer air duct, and reduce costs. At the same time, the above filters are all arranged in the return air duct 4, and the return air duct 4 is arranged at the upper end of the equipment housing 1. Each return air duct 4 is independently modularized, which is convenient for cleaning the internal filters, and the air flows coming out of the two return air ducts 4 enter the return air duct 4 separately. The air enters two symmetrical air duct bodies 2, and a water meter cooler 8 is arranged at the upper end of the air duct body 2, which can cool the airflow. The cooled airflow flows downward along the air duct body 2, and the air is cooled again by the heat pipe evaporation end 11 arranged inside the air duct body 2, and then enters the evaporator 9 for cooling and dehumidification. After dehumidification, it is heated again by the heat pipe condensation end 10. After the air inside the left and right air duct bodies 2 is merged, it enters the bottom condenser 13 for heating again, and then circulates to the air outlet 3 through the centrifugal fan 12 to dry the sludge. The air after the sludge is dried enters the return air duct 4 again for further circulation.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art 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 should be included in the protection scope of the present invention.

Claims

1. A symmetrical sludge dryer air duct with heat pipe, characterized in that: The device comprises a housing (1), wherein two symmetrical groups of air duct bodies (2) are arranged inside the housing (1), and the outlets of the two groups of air duct bodies (2) converge at an air outlet (3) of the housing (1); a second air duct (15) is also arranged inside the housing (1), and a horizontally placed top condenser (16) is arranged at the upper end of the second air duct (15); the second air duct (15) communicates with the outside through an axial flow fan (17) arranged inside the second air duct (15); A return air duct (4) is arranged above the inlet end of the air duct body (2), and a primary filter (5), a medium filter (6) and a high efficiency filter (7) are arranged in sequence from one end to the other end of the return air duct (4), and the primary filter (5) is arranged obliquely inside the return air duct (4); The air duct body (2) is provided with a water meter cooler (8) and a vertically placed evaporator (9) in sequence from the inlet end to the outlet end, and a heat pipe condensing end (10) and a heat pipe evaporating end (11) are respectively provided on both sides of the evaporator (9); The interior of the equipment housing (1) further includes a third air duct (20), and the third air duct (20) is located at the upper end of the air outlet (3) and is connected to a position in the return air duct (4) close to the primary filter (5).

2. The symmetrical air duct of the sludge dryer with heat pipe according to claim 1 is characterized in that: A centrifugal fan (12) for discharging heated gas is arranged inside the air outlet (3).

3. The symmetrical air duct of the sludge dryer with heat pipe according to claim 1 is characterized in that: A horizontally placed bottom condenser (13) is also provided between the air duct main body (2) and the air outlet (3).

4. The symmetrical air duct of the sludge dryer with heat pipe according to claim 1 is characterized in that: A water receiving tray (18) is provided at the lower end of the evaporator (9), and the water receiving tray (18) discharges condensed water through a water pipe at the lower end.

5. The symmetrical air duct of the sludge dryer with heat pipe according to claim 3 is characterized by: A compressor (19) is arranged inside the equipment housing (1).

6. The symmetrical air duct of the sludge dryer with heat pipe according to claim 5 is characterized by: An observation door is provided on the outside of the equipment housing (1), and the primary filter (5), the medium filter (6), the high efficiency filter (7), the evaporator (9), the bottom condenser (13), the top condenser (16) and the compressor (19) are all close to the observation door.

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