Air-cooled zero-gas-consumption blast heat regenerative dryer

Abstract

The utility model discloses an air-cooled zero-gas-consumption blast heat regenerative dryer which comprises a first drying tower and a second drying tower and further comprises a U-shaped pipe arranged on one side of the first drying tower and one side of the second drying tower, and the two ends of the U-shaped pipe are connected with the first drying tower and the second drying tower respectively. A supercharger and an electric heater are arranged at the positions, located on the side walls of the exhaust fan and the U-shaped pipe, of the branch pipe, distribution assemblies used for evenly distributing cooling gas are arranged in the first drying tower and the second drying tower correspondingly, and the U-shaped pipe is provided with a driving assembly used for driving the two distribution assemblies. Through the arrangement of the distribution assembly, under the action of the rotating assembly and the driving assembly, cooling airflow entering the second drying tower is uniformly sprayed, so that the cooling uniformity of an adsorbent in the second drying tower is improved, and the drying effect of subsequent gas treatment is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to an air-cooled zero-air-consumption drum hot-regenerative dryer. Background Technique

[0002] The air-cooled zero-air-consumption drum hot-regenerative dryer uses adsorbents to remove moisture from the air, which is divided into two steps: adsorption and regeneration. In the adsorption stage, the wet air enters the adsorber of the dryer, and the fine pores on the surface of the adsorbent adsorb the moisture in the air to achieve moisture separation. When the moisture in the adsorbent reaches a certain level, it enters the regeneration stage. By means of reverse air flow purging, the moisture in the adsorbent is blown away, and at the same time, the original state of the adsorbent surface is restored. The air-cooled cooling method means that during the regeneration process, the regeneration tower is cold-blown to reduce the temperature of the adsorbent and improve its adsorption capacity. This method avoids the pre-adsorption phenomenon and does not require gas consumption, achieving zero air consumption.

[0003] During the actual working process, when the drying tower needs to be cooled, about 20% of the dry gas is taken from the compressed air outlet channel and pressurized by a booster, and directly enters the drying tower through a pipeline for cold blowing. By continuously cooling and desorbing the adsorbent in the regeneration tower, it helps to restore its adsorption capacity and ensure its long-term stable operation. The cold-blown gas enters the water cooler through a valve for temperature reduction treatment, and then enters the gas-liquid separator to separate the liquid water and then merges with the main air flow and goes down together. However, when the cooling gas enters the drying tower from the pipeline, due to the single outlet direction of the cooling gas, it is easy to cause uneven flow of the cooling gas inside the drying tower, resulting in uneven temperature distribution of the adsorbent in the drying tower, which in turn affects the drying effect of the subsequent gas treatment.

[0004] Therefore, there is an urgent need for an air-cooled zero-air-consumption drum hot-regenerative dryer to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air-cooled zero-air-consumption drum hot-regenerative dryer to solve the problem of uneven flow of the cooling gas inside the drying tower proposed in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: an air-cooled zero-air-consumption drum hot-regenerative dryer, which includes a first drying tower and a second drying tower. First connecting pipes and second connecting pipes are respectively arranged at both ends of the first drying tower and the second drying tower. The first connecting pipe and the second connecting pipe are respectively provided with an air inlet pipe and an air outlet pipe. Control valves are arranged on the first connecting pipe and the second connecting pipe in the direction of communicating with the first drying tower and the second drying tower. It also includes a U-shaped pipe arranged on one side of the first drying tower and the second drying tower. Both ends of the U-shaped pipe are respectively connected to the first drying tower and the second drying tower. A branch pipe is arranged on one side of the U-shaped pipe close to the air outlet pipe. The other end of the branch pipe is connected to the air outlet pipe. An exhaust fan is arranged on the side wall of the branch pipe close to the air outlet pipe. A booster and an electric heater are arranged on the side wall of the branch pipe between the exhaust fan and the U-shaped pipe. Distribution components for evenly distributing the cooling gas are respectively arranged in the first drying tower and the second drying tower. The U-shaped pipe is provided with a driving component for driving the two distribution components.

[0007] The distribution component includes an annular groove opened on the inner wall of the first drying tower. A hollow ring is rotatably connected to the annular groove. A plurality of distribution pipes are fixedly connected to one side of the hollow ring away from the inner wall of the annular groove. A plurality of spray heads are arranged on one side of each distribution pipe close to the air inlet pipe. The first drying tower is provided with a rotating component for rotating each spray head.

[0008] The hollow ring is provided with a connecting component for connecting with the U-shaped pipe. The connecting component includes an annular connecting groove opened on one side of the hollow ring away from the spray head. A connecting ring is rotatably connected to the annular connecting groove. A connecting through pipe is arranged on one side of the connecting ring close to the U-shaped pipe.

[0009] The rotating component includes a rotating hole opened on the side wall of the first drying tower. A gear is rotatably connected to the rotating hole. A toothed ring is fixedly connected to one side of the hollow ring away from the spray head. The toothed ring and the gear are meshed with each other.

[0010] The driving component includes an L-shaped plate fixedly connected to the side wall of the first drying tower. A driving box is fixedly connected to one side of the L-shaped plate close to the U-shaped pipe. A plurality of driving fan blades are connected in the driving box through a driving shaft. One end of the driving shaft penetrates through the driving box and is connected to the gear. The end of the connecting through pipe away from the connecting ring penetrates through the first drying tower and is connected to the driving box. The side of the driving box away from the first drying tower is connected to the U-shaped pipe through an installation pipe.

[0011] The driving shaft is eccentrically arranged with the connecting through pipe and the installation pipe.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] Through the arrangement of the distribution component, under the action of the rotating component and the driving component, the cooling air flow entering the second drying tower is evenly sprayed, thereby improving the uniformity of the temperature reduction of the adsorbent in the second drying tower, and further ensuring the drying effect of the subsequent gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the gas reflux cooling or heating structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the internal structure of the distribution component of the present utility model;

[0017] Figure 4 is Figure 3 the enlarged view at A in

[0018] In the figure: 101, the first drying tower; 102, the second drying tower; 103, the first connecting pipe; 104, the second connecting pipe; 105, the air inlet pipe; 106, the air outlet pipe; 2, the U-shaped pipe; 3, the branch pipe; 4, the exhaust fan; 5, the booster; 6, the electric heater; 701, the annular groove; 702, the hollow ring; 703, the distribution pipe; 704, the nozzle; 801, the annular connecting groove; 802, the connecting ring; 803, the connecting through pipe; 901, the rotating hole; 902, the gear; 903, the gear ring; 1001, the L-shaped plate; 1002, the driving box; 1003, the driving shaft; 1004, the driving fan blade; 1005, the installation pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] Please refer to Figures 1 - 4, An air-cooled zero-air-consumption drum hot-regenerative dryer shown in the figure includes a first drying tower 101 and a second drying tower 102. The two ends of the first drying tower 101 and the second drying tower 102 are respectively provided with a first connecting pipe 103 and a second connecting pipe 104. The first connecting pipe 103 and the second connecting pipe 104 are respectively provided with an air inlet pipe 105 and an air outlet pipe 106. Control valves are provided on the first connecting pipe 103 and the second connecting pipe 104 in the direction of communicating with the first drying tower 101 and the second drying tower 102. It also includes a U-shaped pipe 2 arranged on one side of the first drying tower 101 and the second drying tower 102. Control valves (not shown here) are also provided on the U-shaped pipe 2 in the gas flow direction leading to the first drying tower 101 and the second drying tower 102. The two ends of the U-shaped pipe 2 are respectively connected to the first drying tower 101 and the second drying tower 102. A branch pipe 3 is provided on one side of the U-shaped pipe 2 close to the air outlet pipe 106. The other end of the branch pipe 3 is connected to the air outlet pipe 106. An exhaust fan 4 is provided on the side wall of the branch pipe 3 close to the air outlet pipe 106. A booster 5 and an electric heater 6 are provided on the side wall of the branch pipe 3 between the exhaust fan 4 and the U-shaped pipe 2. Distribution components for evenly distributing the cooling gas are respectively provided in the first drying tower 101 and the second drying tower 102. The U-shaped pipe 2 is provided with a driving component for driving the two distribution components;

[0022] It should be noted here that: through the setting of the U-shaped pipe 2, the branch pipe 3, the exhaust fan 4, the booster 5 and the electric heater 6 components, the regenerated adsorbent can be heated or cooled down by the gas after drying treatment, thus avoiding the pre-adsorption phenomenon and without consuming gas, achieving zero air consumption.

[0023] It is worth noting that: the structure and working principle of the air-cooled zero-air-consumption drum hot-regenerative dryer of the present utility model are only simply drawn and described. For details, reference can be made to the authorized publication number CN218794985U, an energy-saving zero-air-consumption micro-heat regenerative adsorption dryer.

[0024] Please refer to Figure 3 and Figure 4 , The distribution component shown in the figure includes an annular groove 701 opened on the inner wall of the first drying tower 101. The annular groove 701 is rotatably connected with a hollow ring 702. A plurality of distribution pipes 703 are fixedly connected to the side of the hollow ring 702 away from the inner wall of the annular groove 701. A plurality of nozzles 704 are provided on one side of each distribution pipe 703 close to the air inlet pipe 105. The first drying tower 101 is provided with a rotating component for rotating each nozzle 704;

[0025] It should be noted here that: through the setting of the distribution component, the cooling air flow entering the second drying tower 102 is evenly sprayed, thereby improving the uniformity of the temperature reduction of the adsorbent in the second drying tower 102, and further ensuring the drying effect of subsequent gas treatment.

[0026] It should be noted that: at the two end faces of the hollow ring 702 opposite to the annular groove 701, sealing is carried out by means of deep groove end face sealing or mechanical end face sealing, so as to avoid the overflow of gas in the drying tower from the rotating hole 901.

[0027] Please refer to Figure 3 and Figure 4 , in the illustrated hollow ring 702, a connecting component is provided for connecting with the U-shaped tube 2. The connecting component includes an annular connecting groove 801 opened on the side of the hollow ring 702 away from the spray head 704. The annular connecting groove 801 is rotatably connected with a connecting ring 802, and a connecting through pipe 803 is provided on the side of the connecting ring 802 close to the U-shaped tube 2;

[0028] It should be noted here that: through the setting of the connecting component, while ensuring that gas can enter the hollow ring 702 from the U-shaped tube 2, the influence of the rotation of the hollow ring 702 on the U-shaped tube 2 is also avoided.

[0029] Please refer to Figure 3 and Figure 4 , in the illustrated rotating component, a rotating hole 901 is opened on the side wall of the first drying tower 101. The rotating hole 901 is rotatably connected with a gear 902. A toothed ring 903 is fixedly connected to the side of the hollow ring 702 away from the spray head 704, and the toothed ring 903 is meshed with the gear 902;

[0030] It should be noted here that: through the setting of the rotating component, it is convenient to drive the hollow ring 702 to rotate.

[0031] Working principle: When the first drying tower 101 is working and the second drying tower 102 is being regenerated: low-temperature compressed air enters the first drying tower 101 from the air inlet pipe 105 for drying treatment. The treated dry gas is discharged from the air outlet pipe 106 through the second connecting pipe 104. At the same time, about 20% of the dry gas is taken from the dry compressed air outlet pipe 106, pressurized by the booster 5, enters the electric heater 6, is heated to 180 °C and then sent into the second drying tower 102 to heat and regenerate the adsorbent. The regenerated gas enters the water cooler for temperature reduction treatment, then enters the gas-liquid separator to separate the liquid water, and then merges with the main air flow and goes down together;

[0032] When the first drying tower 101 is working and the second drying tower 102 is being cold blown: low-temperature compressed air enters the first drying tower 101 for drying treatment. The treated dry gas is discharged from the air outlet pipe 106. At the same time, about 20% of the dry gas is taken from the air outlet channel of the air outlet pipe 106, pressurized by the booster 5, enters the electric heater 6 without heating (at this time, the electric heater 6 is turned off), enters the second drying tower 102 through the U-shaped tube 2 for cold blowing. The cold-blown gas enters the water cooler for temperature reduction treatment, then enters the gas-liquid separator to separate the liquid water, and then merges with the main air flow and goes down together;

[0033] And during the process of the gas flowing from the U-shaped tube 2 into the second drying tower 102 for cold blowing, under the action of the driving assembly and the rotating assembly, the hollow ring 702 will be driven to rotate. During the rotation of the hollow ring 702, the nozzles 704 on each distribution pipe 703 will be driven to rotate. Thus, under the rotation of each nozzle 704, the cooling air flow entering the second drying tower 102 is evenly sprayed, thereby improving the uniformity of the temperature reduction of the adsorbent in the second drying tower 102, and further ensuring the drying effect of the subsequent gas treatment.

[0034] Embodiment 2

[0035] Please refer to Figure 3 and Figure 4 As shown in the figure, for this embodiment, a further description is made for Embodiment 1. The driving assembly in the figure includes an L-shaped plate 1001 fixedly connected to the side wall of the first drying tower 101. One side of the L-shaped plate 1001 close to the U-shaped tube 2 is fixedly connected with a driving box 1002. A plurality of driving fan blades 1004 are connected in the driving box 1002 through a driving shaft 1003. One end of the driving shaft 1003 penetrates through the driving box 1002 and is connected to the gear 902. One end of the connecting through pipe 803 far from the connecting ring 802 penetrates through the first drying tower 101 and is connected to the driving box 1002. One side of the driving box 1002 far from the first drying tower 101 is connected to the U-shaped tube 2 through an installation pipe 1005.

[0036] It should be noted here that: through the setting of the driving assembly, when the gas flows from the U-shaped tube 2 into the driving box 1002, under the impact of the gas, the driving fan blades 1004 will be driven to rotate. During the rotation of the driving fan blades 1004, the gear 902 will be driven to rotate. Thus, further under the meshing and transmission of the gear 902 and the gear ring 903, the hollow ring 702 is driven to rotate, and the hollow ring 702 is driven to rotate by using the impact force when the gas flows, saving the energy expenditure, and further reducing the cost of cooling and temperature reduction and desorption of the adsorbent.

[0037] Please refer to Figure 3 and Figure 4 As shown in the figure, the driving shaft 1003 is eccentrically arranged with the connecting through pipe 803 and the installation pipe 1005.

[0038] It should be noted here that: by eccentrically arranging the driving shaft 1003 with the connecting through pipe 803 and the installation pipe 1005, the gas flowing from the U-shaped tube 2 into the driving box 1002 can impact on the driving fan blades 1004.

[0039] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or essential features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An air-cooled zero-air-consumption drum hot-regenerative dryer, comprising: A first drying tower (101) and a second drying tower (102), both ends of the first drying tower (101) and the second drying tower (102) are respectively provided with a first connecting pipe (103) and a second connecting pipe (104), the first connecting pipe (103) and the second connecting pipe (104) are respectively provided with an air inlet pipe (105) and an air outlet pipe (106), and control valves are provided on the first connecting pipe (103) and the second connecting pipe (104) in the direction of communicating with the first drying tower (101) and the second drying tower (102); It is characterized in that it further includes: A U-shaped pipe (2) arranged on one side of the first drying tower (101) and the second drying tower (102), both ends of the U-shaped pipe (2) are respectively connected to the first drying tower (101) and the second drying tower (102), a branch pipe (3) is provided on one side of the U-shaped pipe (2) close to the air outlet pipe (106), the other end of the branch pipe (3) is connected to the air outlet pipe (106), a suction fan (4) is provided on the side wall of the branch pipe (3) close to the air outlet pipe (106), a booster (5) and an electric heater (6) are provided on the side wall of the branch pipe (3) between the suction fan (4) and the U-shaped pipe (2), distribution components for evenly distributing the cooling gas are respectively provided in the first drying tower (101) and the second drying tower (102), and a driving component for driving the two distribution components is provided on the U-shaped pipe (2).

2. The air-cooled zero-air-consumption drum hot-regenerative dryer according to claim 1, wherein: The distribution component includes an annular groove (701) opened on the inner wall of the first drying tower (101), a hollow ring (702) is rotatably connected to the annular groove (701), a plurality of distribution pipes (703) are fixedly connected to one side of the hollow ring (702) away from the inner wall of the annular groove (701), and a plurality of nozzles (704) are provided on one side of each distribution pipe (703) close to the air inlet pipe (105), and a rotating component for rotating each nozzle (704) is provided on the first drying tower (101).

3. The air-cooled zero-air-consumption drum hot-regeneration dryer according to claim 2, wherein: The hollow ring (702) is provided with a connecting component for connecting with the U-shaped pipe (2), the connecting component includes an annular connecting groove (801) opened on one side of the hollow ring (702) away from the nozzle (704), a connecting ring (802) is rotatably connected to the annular connecting groove (801), and a connecting through pipe (803) is provided on one side of the connecting ring (802) close to the U-shaped pipe (2).

4. The air-cooled zero-air-consumption drum hot-regeneration dryer according to claim 2, wherein: The rotating component includes a rotating hole (901) opened on the side wall of the first drying tower (101), a gear (902) is rotatably connected to the rotating hole (901), a toothed ring (903) is fixedly connected to one side of the hollow ring (702) away from the nozzle (704), and the toothed ring (903) is meshed with the gear (902).

5. The air-cooled zero-air-consumption drum hot-regeneration dryer according to claim 3, wherein: The driving assembly includes an L-shaped plate (1001) fixedly connected to the side wall of the first drying tower (101). A driving box (1002) is fixedly connected to one side of the L-shaped plate (1001) close to the U-shaped tube (2). A plurality of driving fan blades (1004) are connected in the driving box (1002) through a driving shaft (1003). One end of the driving shaft (1003) penetrates through the driving box (1002) and is connected to a gear (902). One end of the connecting through pipe (803) far from the connecting ring (802) penetrates through the first drying tower (101) and is connected to the driving box (1002). One side of the driving box (1002) far from the first drying tower (101) is connected to the U-shaped tube (2) through an installation pipe (1005).

6. The air-cooled zero-air-consumption drum hot-regeneration dryer according to claim 5, characterized in that: The driving shaft (1003) is eccentrically arranged with respect to the connecting through pipe (803) and the installation pipe (1005).

Images