Heat recovery device for cooling chemical fertilizer particles

Abstract

The utility model discloses a heat recovery device for cooling chemical fertilizer particles, which relates to the technical field of heat recovery, and comprises a vertically arranged stock bin, the stock bin is provided with a top feed port and a bottom discharge port, a stock bin section between the top feed port and the bottom discharge port forms a cooling channel, and when a switch valve at the bottom discharge port is closed, the cooling channel is closed. The chemical fertilizer particles are temporarily stored in the cooling channel; an air inlet cavity and an air outlet cavity are formed in the two sides of the cooling channel. Through the arrangement of the cooling channel, when the switch valve of the bottom feeding port is closed, chemical fertilizer particles can be temporarily stored in the cooling channel, and then under the cooperation of the air inlet cavity and the air outlet cavity, the air inlet cavity can blow air to the ventilation gap in the cooling channel; the air in the ventilation gap after being in contact with the cooling pipeline can be collected by the air outlet cavity, that is, the air outlet cavity is used for blowing and cooling the cooling channel, and meanwhile, the blown air with heat can also be recycled by the air inlet cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery, in particular to a heat recovery device for cooling fertilizer particles. Background Art

[0002] At present, in the production of fertilizers, it is often necessary to dry the produced particles to remove the water in the particles, so the particles often need to be cooled by a cooling device.

[0003] After searching, the patent document with authorization announcement number CN205383909U discloses a fertilizer cooler, which includes a cooling pipe and a plurality of flipping plates arranged on the inner wall of the cooling pipe. The flipping plates are provided with a bending portion at the other end. The arc bending angles of two adjacent flipping plates are different. The direction of the bending portion of the flipping plate is the same as the rotation direction of the cooling pipe. All the bending portions are arc-shaped with a fillet of 90° to 160°. They are arranged cyclically on the circumference of the cross-section of the cooling pipe with three as a cycle. The three flipping plates are respectively a first flipping plate, a second flipping plate, and a third flipping plate.

[0004] The cooling pipe in the above-mentioned cooler is arranged to be open. When in use, the material is lifted up and rotated by the arc-shaped curved part of the flipping plate. When the cooling pipe rotates and rises, the material begins to fall from the arc-shaped curved part one after another. The open cooling pipe can achieve the effect of quickly cooling the material inside the cooling pipe by the outside air.

[0005] However, the above-mentioned cooler does not have any components for recovering heat during the material heat dissipation process. On the basis of setting up this kind of open cooling pipe, when the cooling pipe drives the material to rotate and cool down, the heat of the material itself will be directly dissipated into the air and cannot be recycled. In the large-scale production operations of the factory, this heat loss will cause a lot of waste of resources, which goes against the company's concept of reducing costs and increasing efficiency.

[0006] If the conventional heat collection scheme in the prior art is added to the above-mentioned cooler, the technical scheme of using a fan to blow air to the cooling pipe and collect the air after heat conduction with the cooling pipe is added to the above-mentioned cooler. The specific working conditions are as follows: when collecting, the fan blows air to the surface of the cooling pipe. Since the cooling pipe is in a rotating state during operation, the material is in contact with the inner wall of the cooling pipe for a short time, and only part of the heat of the material itself is conducted to the cooling pipe; and the cooling pipe is open-type, so another part of the heat of the material itself will be lost from the open part of the cooling pipe. Under the combined effect of these two conditions, the air blown out of the cooling pipe by the fan will absorb less heat. In summary, the collection scheme composed of adding conventional heat collection technical means on the basis of the above-mentioned cooler technical scheme collects less heat for materials of the same volume and temperature per unit time, and the heat collection effect is poor.

[0007] Therefore, we propose a heat recovery device for cooling fertilizer particles to solve the above problems. Utility Model Content

[0008] The utility model aims to solve the problems in the prior art and to propose a heat recovery device for cooling fertilizer particles. The heat recovery device first temporarily stores the fertilizer particles to be cooled in a cooling channel, and then performs a blowing cooling process on the cooling channel placed in a heat-insulating atmosphere, so that the heat in the fertilizer particles is maximized and heat is transferred to the air through the cooling channel, and then the air with heat is recovered to achieve efficient heat recovery.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] A heat recovery device for cooling fertilizer particles comprises a vertically arranged silo, wherein the silo is provided with a top feed port and a bottom discharge port, and the silo section between the top feed port and the bottom discharge port constitutes a cooling channel, and when a switch valve at the bottom discharge port is closed, the fertilizer particles are temporarily stored in the cooling channel; an air inlet cavity and an air outlet cavity are arranged on both sides of the cooling channel, a ventilation gap is arranged transversely through the cooling channel, and the air inlet cavity, the air outlet cavity and the ventilation gap are all sealed and isolated from the material cavity of the silo.

[0011] As a further solution of the utility model: the cooling channel is a drum structure with a rotating axis arranged vertically, and a dynamic seal is formed between the two ends of the cooling channel and the silo cavity wall; the two ends of the cooling channel respectively form a channel inlet for receiving fertilizer particles and a channel outlet for discharging fertilizer particles, and there is a reserved gap between the channel inlet and the channel outlet and the top feed port and the bottom discharge port respectively.

[0012] As a further solution of the utility model: two parallel baffles are arranged inside the silo section constituting the cooling channel, a dynamic seal is formed between the two baffles and the silo cavity wall, and a plurality of material guide pipes for connecting the two baffles are connected between the two baffles, the plurality of material guide pipes are arranged in a circular array around the rotation axis of the cooling channel, and there is a position gap between any two adjacent material guide pipes, and a plurality of position gaps are combined to constitute the ventilation gap, and the two ends of the plurality of material guide pipes respectively constitute the channel inlet and the channel outlet; the air inlet cavity and the air outlet cavity are respectively formed between the whole composed of the two baffles and the plurality of material guide pipes and the cavity walls on both sides of the silo section.

[0013] As a further solution of the utility model: the cooling channel is rotatably installed on the walls of the air inlet cavity and the air outlet cavity through a bearing bracket; and also includes a driving member for driving the cooling channel to rotate.

[0014] As a further solution of the utility model: the driving member includes a gear ring fixedly mounted on the outside of the cooling channel, and also includes a gear for meshing with the gear ring for transmission, and the gear is driven to rotate by a driving motor located on the outer wall of the air inlet chamber or the air outlet chamber.

[0015] As a further solution of the utility model: it also includes an air supply pipe connected to the air inlet chamber and an exhaust pipe connected to the air outlet chamber, and one end of the air supply pipe and the exhaust pipe located inside the silo are respectively located on both sides of the cooling channel.

[0016] As a further solution of the utility model: the top feed port is provided with a control valve for controlling the feed amount thereof.

[0017] As a further solution of the utility model: a material position display meter is provided at a position between the channel entrance and the top feed port of the silo.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Through the setting of the cooling channel, when the switch valve of the bottom feed port is closed, the cooling channel can temporarily store the fertilizer particles inside it, and then with the cooperation of the air inlet chamber and the air outlet chamber, the air in the air inlet chamber can be blown to the ventilation gap on the cooling channel, and the air in the ventilation gap that contacts the cooling pipe will be collected by the air outlet chamber, that is, while the air outlet chamber is used to blow and cool the cooling channel, the air with heat blown out can also be recovered by the air inlet chamber; at the same time, by sealing and isolating the air inlet chamber, the air outlet chamber and the ventilation gap from the material chamber, the air blown from the air inlet chamber to the cooling channel can all pass through the ventilation gap and blow to the air outlet chamber, thereby improving the effect of full contact between the air and the cooling channel.

[0020] 2. By setting the cooling channel as a duct rotating structure, when the cooling channel rotates, the air inlet chamber can continuously blow air to different positions outside the multiple material guide tubes, so that both the inside and outside of the cooling channel can be blown, and the air can be further fully contacted with the material in the cooling channel, that is, the required rapid cooling treatment purpose is achieved; at the same time, under the full contact between the air and the outside of the multiple material guide tubes, the air absorbs more heat through heat transfer, and then the air outlet chamber is used to collect the air to achieve efficient recovery and utilization of the heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 2It is a schematic diagram of the front view structure of two baffles and multiple material guide pipes in the utility model;

[0024] Figure 3 It is a schematic diagram of the top view structure of two baffles and a plurality of material guide pipes in the utility model.

[0025] In the figure: 1. silo; 2. cooling channel; 3. exhaust pipe; 4. material guide pipe; 5. gear ring; 6. drive motor; 7. gear; 8. air supply pipe; 9. control valve; 10. switch valve; 11. material position display meter; 12. support bracket; 13. baffle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 3 As shown, a heat recovery device for cooling fertilizer particles comprises a vertically arranged silo 1, which is provided with a top feed port and a bottom discharge port, and the silo section between the top feed port and the bottom discharge port constitutes a cooling channel 2, through which fertilizer particles with a certain temperature can be transported to the inside of the cooling channel 2, and when the switch valve 10 at the bottom discharge port is closed, the fertilizer particles will be temporarily stored in the cooling channel 2, and air inlet chamber and air outlet chamber are respectively provided on both sides of the cooling channel 2, and a ventilation gap is arranged transversely through the cooling channel 2, and the ventilation gap is used to connect the air inlet chamber and the air outlet chamber, and at the same time, the air inlet chamber, the air outlet chamber and the ventilation gap are all sealed and isolated from the above-mentioned material chamber.

[0028] When the switch valve 10 at the bottom discharge port is closed and the fertilizer particles are temporarily stored inside the cooling channel 2, the air inlet chamber can be blown to the air outlet chamber through the ventilation gap, so that the air inside the air inlet chamber can be in close contact with the cooling channel 2 through the ventilation gap, and the heat of the fertilizer particles can be transferred to the air in the ventilation gap through the cooling channel 2, and then the air is collected by the air outlet chamber to achieve heat recovery. By sealing and isolating the air inlet chamber, the air outlet chamber and the ventilation gap between the material chamber, the air in the air inlet chamber can be blown to the air outlet chamber through the ventilation gap, ensuring that the air is in full contact with the cooling channel 2.

[0029] like Figure 1As shown, for the setting of the above-mentioned cooling channel 2, the cooling channel 2 is set as a drum structure with a rotation axis vertically arranged, and a dynamic seal is formed between the two ends of the cooling channel 2 and the cavity wall of the silo 1; the two ends of the cooling channel 2 respectively form a channel inlet for receiving fertilizer particles and a channel outlet for discharging fertilizer particles, and there is a reserved gap between the channel inlet and the channel outlet and the top feed port and the bottom discharge port. Preferably, two parallel baffles 13 are arranged inside the silo section constituting the cooling channel 2, and a dynamic seal is formed between the two baffles 13 and the cavity wall of the silo 1, and a plurality of guide pipes 4 for connecting the two baffles 13 are connected and arranged between the two baffles 13, and the cooling channel 2 formed by the guide pipe 4 and the baffle 13 is rotatably installed at the cavity wall of the air inlet cavity and the air outlet cavity through the bearing bracket 12, and the plurality of guide pipes 4 are arranged in a circumferential array around the rotation axis of the cooling channel 2, and there is a position gap between any two adjacent guide pipes 4, and the plurality of position gaps are combined to form the above-mentioned ventilation gap. At this time, the two ends of the guide tube 4 or the corresponding openings of the baffle 13 respectively constitute the above-mentioned channel entrance and the above-mentioned channel exit. The fertilizer particles at the top feed port can be transported to the channel entrance through the reserved gap. At this time, the switch valve 10 at the bottom discharge port is closed, so that the fertilizer particles can be temporarily stored in the cooling channel 2. In the process of the air blown out from the air inlet chamber passing through the ventilation gap to reach the air outlet chamber, the cooling channel 2 can be driven to rotate, and the ventilation gap composed of multiple position gaps can also be driven to rotate, and then the air blown from the air inlet chamber to the ventilation gap will further fully contact with the multiple guide tubes 4, so as to achieve rapid cooling of the fertilizer particles inside the cooling channel 2. At the same time, under the effect of the full contact between the air and the multiple guide tubes 4, the heat absorbed by the heat transfer of the air inside the air outlet chamber can also be more, so as to achieve efficient recovery and utilization of heat.

[0030] like Figure 1-Figure 2 As shown, in order to automatically drive the cooling channel 2 to rotate, a driving member for driving the cooling channel 2 to rotate can be provided on the silo 1. Specifically, the driving member includes a gear ring 5 fixedly sleeved on the outside of the guide tube 4 and a gear 7 rotatably arranged inside the silo 1 and driven by a driving motor 6, and the gear 7 is meshed with the gear ring 5 for transmission. When the driving motor 6 is started, the gear 7 can rotate with the gear ring 5, thereby realizing the rotation driving of the cooling channel 2.

[0031] It should be noted that the driving components provided in this embodiment are driving motor 6 and gear 7, etc. In actual use, the driving components are not limited to the combination of driving motor 6 and gear 7, etc., and can also be set to other conventional technical means in the prior art, as long as it can realize the function of driving the cooling channel 2 to rotate.

[0032] like Figure 2-Figure 3As shown, in order to better ventilate the air inlet cavity and better collect the air inside the air outlet cavity, this embodiment may also include an air supply pipe 8 connected to the air inlet cavity and an exhaust pipe 3 connected to the air outlet cavity, and the ends of the air supply pipe 8 and the exhaust pipe 3 located inside the silo 1 are respectively located on both sides of the cooling channel 2. When the air supply pipe 8 is working, it will blow air into the air inlet cavity, and the exhaust pipe 3 can collect the air with heat after contacting the cooling channel 2, and then discharge it to the corresponding use place.

[0033] like Figure 1 As shown, further, a control valve 9 for controlling the feed amount is provided on the top feed port. At the same time, a material position display meter 11 is provided at a position between the channel entrance and the top feed port of the silo 1. The material position display meter 11 can enable the staff to clearly know the position of the fertilizer particles.

[0034] After completing a heat collection operation, the control valve 9 can be closed, and then the switch valve 10 can be opened, so that the fertilizer particles located in the cooling channel 2 and cooled by heat transfer are discharged from the bottom discharge port. When heat collection is required again, the switch valve 10 can be used to close the bottom discharge port, and then the control valve 9 can be opened, so that the top feed port can transport the fertilizer particles to and temporarily store them in the cooling channel 2, and then the air supply pipe 8 and the exhaust pipe 3 are used in coordination to achieve heat collection.

[0035] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A heat recovery device for cooling fertilizer particles, characterized in that: The invention comprises a silo (1) arranged vertically, wherein the silo (1) is provided with a top feed inlet and a bottom discharge outlet, and the silo section located between the top feed inlet and the bottom discharge outlet constitutes a cooling channel (2), and when a switch valve (10) at the bottom discharge outlet is closed, fertilizer particles are temporarily stored in the cooling channel (2); an air inlet cavity and an air outlet cavity are arranged on both sides of the cooling channel (2), a ventilation gap is arranged transversely through the cooling channel (2), and the air inlet cavity, the air outlet cavity and the ventilation gap are all sealed and isolated from the material cavity of the silo (1).

2. A heat recovery device for cooling fertilizer particles according to claim 1, characterized in that: The cooling channel (2) is a drum structure with a rotating axis arranged vertically, and a dynamic seal is formed between the two ends of the cooling channel (2) and the cavity wall of the silo (1); the two ends of the cooling channel (2) respectively form a channel inlet for receiving fertilizer particles and a channel outlet for discharging fertilizer particles, and there is a reserved gap between the channel inlet and the channel outlet and the top feed port and the bottom discharge port respectively.

3. A heat recovery device for cooling fertilizer particles according to claim 2, characterized in that: Two parallel baffles (13) are arranged inside the silo section constituting the cooling channel (2), and a dynamic seal is formed between the two baffles (13) and the cavity wall of the silo (1), and a plurality of material guide pipes (4) for connecting the two baffles (13) are connected between the two baffles (13), and the plurality of material guide pipes (4) are arranged in a circular array around the rotation axis of the cooling channel, and there is a position gap between any two adjacent material guide pipes (4), and the plurality of position gaps are combined to form the ventilation gap.

4. A heat recovery device for cooling fertilizer particles according to claim 2 or 3, characterized in that: The cooling channel (2) is rotatably mounted on the walls of the air inlet cavity and the air outlet cavity via a bearing bracket (12); and also includes a driving member for driving the cooling channel (2) to rotate.

5. A heat recovery device for cooling fertilizer particles according to claim 4, characterized in that: The driving member comprises a toothed ring (5) fixedly sleeved on the outside of the cooling channel (2), and also comprises a gear (7) for meshing with the toothed ring (5) for transmission, and the gear (7) is driven to rotate by a driving motor (6) located on the outer wall of the air inlet cavity or the air outlet cavity.

6. A heat recovery device for cooling fertilizer particles according to claim 1, 2 or 3, characterized in that: It also includes an air supply pipe (8) connected to the air inlet chamber and an exhaust pipe (3) connected to the air outlet chamber, and one end of the air supply pipe (8) and the exhaust pipe (3) located inside the silo (1) are respectively located on both sides of the cooling channel (2).

7. A heat recovery device for cooling fertilizer particles according to claim 6, characterized in that: The top feed port is provided with a control valve (9) for controlling the feed volume.

8. A heat recovery device for cooling fertilizer particles according to claim 2 or 3, characterized in that: The silo (1) is provided with a material position display meter (11) at a position between the channel entrance and the top feed port.

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