Fluidized bed granulation equipment

Abstract

The utility model provides fluidized bed granulation equipment which comprises a cooling chamber and a spraying mechanism, the cooling chamber is provided with a first feeding port, a first discharging port, a first air inlet and a first air outlet, the first air inlet and the first air outlet are both formed between the first feeding port and the first discharging port, and the spraying mechanism is arranged between the first feeding port and the first discharging port. A first pore plate extending from the first feed port to the first discharge port is arranged in the cooling chamber, and the two sides of the first pore plate correspond to the first air inlet and the first air outlet respectively; at least part of the spraying mechanism is arranged in the cooling chamber, a nozzle of the spraying mechanism is arranged between the first air outlet and the first pore plate, an outlet of the nozzle corresponds to the first pore plate, and a distance exists between the outlet of the nozzle and the first pore plate. According to the fluidized bed granulation equipment, the interior of the cooling chamber can be automatically cleaned, so that the cleaning operation is simplified, the labor cost is reduced, and the safety is higher.

Description

Technical Field

[0001] The present application relates to the technical field of fertilizer production, and in particular to a fluidized bed granulation device. Background Art

[0002] In the process of producing urea fertilizer, the fluidized bed mainly makes the urea particles in a boiling state, and in this process, various process conditions are used to achieve urea particle enlargement, cooling, dust removal, etc.

[0003] At present, in the negative pressure fluidized bed granulation process, the urea granules after granulation in the granulation chamber enter the cooling chamber for cooling. After the cooling in the cooling chamber is completed and the finished urea granules are discharged, cleaning personnel are required to enter the cooling chamber to clean the inside of the cooling chamber.

[0004] However, manual cleaning has certain labor costs. At the same time, since the exhaust port of the cooling room corresponds to other chemical (such as formaldehyde) tanks, it affects the health of the cleaning personnel in the cooling room. Utility Model Content

[0005] The present application provides a fluidized bed granulation device to reduce labor costs and ensure the health of operators.

[0006] To solve the above technical problems, an embodiment of the present application provides a fluidized bed granulation equipment, which includes: a cooling chamber and a spraying mechanism, the cooling chamber having a first feed port, a first discharge port, a first air inlet and a first air outlet, the first air inlet and the first air outlet are both arranged between the first feed port and the first discharge port, and a first orifice plate extending from the first feed port toward the first discharge port is arranged inside the cooling chamber, and the two sides of the first orifice plate correspond to the first air inlet and the first air outlet respectively; at least a part of the spraying mechanism is arranged inside the cooling chamber, the nozzle of the spraying mechanism is arranged between the first air outlet and the first orifice plate, and the outlet of the nozzle corresponds to the first orifice plate and has a distance with the first orifice plate.

[0007] In some embodiments, the cooling chamber includes a top wall, a bottom wall and a circle of side walls arranged between the top wall and the bottom wall, the first feed port and the first discharge port are respectively arranged at two positions opposite to each other on the circle of side walls, the first air inlet is arranged on the bottom wall, and the first air outlet is arranged on the top wall; the distance from the nozzle to the first air outlet is smaller than the distance from the nozzle to the first orifice plate.

[0008] In some embodiments, the spraying mechanism includes: a first water pipe and a plurality of second water pipes respectively connected to the first water pipe, the plurality of second water pipes are arranged in a direction from the first feed port to the first discharge port, and each of the second water pipes is respectively provided with an electric-controlled valve and the nozzle.

[0009] In some embodiments, the inlet of the first water pipe is located outside the cooling chamber, the portion of the first water pipe located outside the cooling chamber extends in a vertical direction and opens downward, and a first valve is provided on the first water pipe; the spraying mechanism also includes: a third water pipe and a second valve, the third water pipe is connected to the first water pipe between the first valve and the outer wall of the cooling chamber at an angle, and the second valve is provided on the third water pipe.

[0010] In some embodiments, the fluidized bed granulation equipment may further include: a receiving device, the receiving device is provided with a receiving space, the receiving space is provided with an entrance upwardly, the entrance is opposite to the opening of the third water pipe away from one end of the first water pipe, and there is a first distance between the entrance and the opening of the third water pipe away from one end of the first water pipe.

[0011] In some embodiments, the fluidized bed granulation equipment may further include: a pressure gauge, which is disposed on a portion of the first water pipe corresponding to the outside of the cooling chamber and is disposed adjacent to the first valve.

[0012] In some embodiments, the spraying mechanism further includes: a heat-insulating layer, wherein the heat-insulating layer is wrapped around a portion of the first water pipe located outside the cooling chamber.

[0013] In some embodiments, the first air inlet and the first air outlet are opposite to each other.

[0014] In some embodiments, the fluidized bed granulation equipment may also include: a granulation chamber, having a second feed port, a second discharge port, a second air inlet and a second air outlet, the second discharge port is connected to the first feed port, the second air inlet and the second air outlet are both arranged between the second feed port and the second discharge port, and a second orifice plate extending from the second feed port toward the second discharge port is arranged in the granulation chamber, and the two sides of the second orifice plate correspond to the second air inlet and the second air outlet respectively.

[0015] In some embodiments, the fluidized bed granulation equipment may further include: a cleaning mechanism, at least partially disposed in the granulation chamber, to transport a cleaning liquid to the granulation chamber.

[0016] Through the above technical scheme, the fluidized bed granulation equipment provided by the present application includes: a cooling chamber and a spraying mechanism, the nozzle of the spraying mechanism is arranged between the first air outlet and the first orifice plate in the cooling chamber and opposite to the first orifice plate, and the first air inlet of the cooling chamber can output fluidizing air to the nozzle, so that the cleaning liquid sprayed by the nozzle can automatically clean the first orifice plate and the inner wall of the cooling chamber between the nozzle and the first orifice plate, so as to simplify the cleaning operation, reduce labor costs, and have higher safety.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a fluidized bed granulation device provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the partial structure of the fluidized bed granulation equipment provided in an embodiment of the present application.

[0021] Description of reference numerals:

[0022] 100. fluidized bed granulation equipment; 10. cooling chamber; 11. first feed inlet; 12. first discharge outlet; 13. first air inlet; 14. first air outlet; 15. first orifice plate; 16. top wall; 17. bottom wall; 18. a circle of side walls; 19. crossbeam; 20. spraying mechanism; 21. nozzle; 22. first water pipe; 221. first valve; 23. second water pipe; 24. electric control valve; 25. third water pipe; 26. second valve; 27. pressure gauge; 30. granulation chamber; 31. second air inlet; 32. second air outlet; 33. second orifice plate. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0024] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limiting.

[0025] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0027] It should also be noted that in the description of this application, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0028] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0030] The present application embodiment provides a fluidized bed granulation device 100, see Figure 1 and Figure 2 As shown, the fluidized bed granulation equipment 100 includes: a cooling chamber 10 and a spraying mechanism 20, the cooling chamber 10 has a first feed port 11, a first discharge port 12, a first air inlet 13 and a first air outlet 14, the first air inlet 13 and the first air outlet 14 are both arranged between the first feed port 11 and the first discharge port 12, and a first orifice plate 15 extending from the first feed port 11 to the first discharge port 12 is arranged inside the cooling chamber 10, and the two sides of the first orifice plate 15 correspond to the first air inlet 13 and the first air outlet 14 respectively; at least a part of the spraying mechanism 20 is arranged inside the cooling chamber 10, and the nozzle 21 of the spraying mechanism 20 is arranged between the first air outlet 14 and the first orifice plate 15, and the outlet of the nozzle 21 corresponds to the first orifice plate 15 and has a distance with the first orifice plate 15.

[0031] Specifically, the first feed port 11 of the cooling chamber 10 is used to allow the high-temperature urea granules produced in the granulation chamber 30 to enter the cooling chamber 10 for cooling, and the first discharge port 12 is used to allow the low-temperature urea granules cooled inside the cooling chamber 10 to be sent out, and the first air inlet 13 and the first air outlet 14 are both arranged between the first feed port 11 and the first discharge port 12, so as to transport fluidizing air to the high-temperature urea granules entering from the first feed port 11 to cool the high-temperature urea granules. Here, the first orifice plate 15 in the cooling chamber 10 extends from the first feed port 11 to the first discharge port 12, and the two sides of the first orifice plate 15 correspond to the first air inlet 13 and the first air outlet 14, that is, the openings at both ends of the hole on the first orifice plate 15 are respectively opposite to the first air inlet 13 and the first air outlet 14, so that the high-temperature urea particles fed from the first feed port 11 can be suspended above the first orifice plate 15 under the action of the fluidizing air sent from the first air inlet 13 to the first air outlet 14 and transported to the first discharge port 12 along the first orifice plate 15. At the same time, during the transportation process, the heat is taken away by the fluidizing air sent from the first air inlet 13 to the first air outlet 14 for cooling.

[0032] The nozzle 21 of the spraying mechanism 20 is opposite to the first orifice plate 15 and has a distance therebetween, so as to be able to spray cleaning liquid (such as clean water) onto the first orifice plate 15. When the cleaning liquid sprayed by the nozzle 21 first enters the holes on the first orifice plate 15 to flush the holes on the first orifice plate 15, under the action of the fluidizing air sent from the first air inlet 13 to the first air outlet 14, the cleaning liquid on the side of the first orifice plate 15 away from the nozzle 21 and the cleaning liquid in the holes are directed to the first orifice plate 15 corresponding to the first air outlet 14. The liquid flows to one side of the outlet 14 to flush the holes for the second time, and then the liquid flushed for the second time enters the holes again under the action of gravity to clean the holes for the third time, thereby achieving multiple cleaning of the holes on the first orifice plate 15, thereby improving the cleaning effect; at the same time, the liquid sprayed from the nozzle 21 is diffused to the inner wall between the nozzle 21 and the first orifice plate 15 under the action of the fluidizing wind sent from the first air inlet 13 to the first air outlet 14, thereby cleaning the inner wall between the nozzle 21 and the first orifice plate 15. Here, the cleaning liquid sprayed from the nozzle 21 can be discharged through the liquid outlet opened at the bottom of the cooling chamber 10, or it can be sucked away by a suction device, or other settings can be used.

[0033] In this embodiment, the fluidized bed granulation equipment 100 includes: a cooling chamber 10 and a spraying mechanism 20, the nozzle 21 of the spraying mechanism 20 is arranged between the first air outlet 14 and the first orifice plate 15 in the cooling chamber 10 and opposite to the first orifice plate 15, and the first air inlet 13 of the cooling chamber 10 can output fluidized air to the nozzle 21, so that the cleaning liquid sprayed by the nozzle 21 can automatically clean the inner wall of the cooling chamber 10 between the first orifice plate 15 and the nozzle 21 and the first orifice plate 15, so as to simplify the cleaning operation, reduce labor costs, and have higher safety. At the same time, the spraying mechanism 20 is arranged in the cooling chamber 10 and cooperates with the first air inlet 13 and the first air outlet 14 of the cooling chamber 10 to realize the cleaning of the inside of the cooling chamber 10, so that the structure of the fluidized bed granulation equipment 100 is simple, and the automatic cleaning makes the operation easy. In addition, there is a distance between the outlet of the nozzle 21 and the first orifice plate 15 to avoid the probability of the suspended high-temperature urea particles blocking the nozzle 21.

[0034] In some embodiments, see Figure 1 As shown, the cooling chamber 10 may include a top wall 16, a bottom wall 17 and a circle of side walls 18 arranged between the top wall 16 and the bottom wall 17, the first feed port 11 and the first discharge port 12 are respectively arranged at two positions opposite to each other on the circle of side walls 18, the first air inlet 13 is arranged on the bottom wall 17, and the first air outlet 14 is arranged on the top wall 16; the distance from the nozzle 21 to the first air outlet 14 is smaller than the distance from the nozzle 21 to the first orifice plate 15.

[0035] Specifically, the nozzle 21 is opposite to the first orifice plate 15, and is opposite to the first air inlet 13, and the first air inlet 13 is arranged on the bottom wall 17, so that the nozzle 21 is arranged downward, so that the liquid sprayed by the nozzle 21 receives the spraying pressure of the nozzle 21 and is superimposed with the effect of its own gravity, and hits the first orifice plate 15, so that the cleaning effect of the surface of the first orifice plate 15 and the holes thereon is better. The distance from the nozzle 21 to the first air outlet 14 is smaller than the distance from the nozzle 21 to the first orifice plate 15, so as to further avoid the probability of the suspended high-temperature urea particles blocking the nozzle 21. At the same time, the fluidizing wind from the first air inlet 13 to the first air outlet 14 can send the liquid to a larger area between the nozzle 21 and the first orifice plate 15, so as to be able to clean a larger area on the inner wall corresponding to a circle of side walls 18.

[0036] In some embodiments, see Figure 1 and Figure 2 As shown, the spraying mechanism 20 includes: a first water pipe 22 and a plurality of second water pipes 23 respectively connected to the first water pipe 22, the plurality of second water pipes 23 are arranged in the direction from the first feed port 11 to the first discharge port 12, and each second water pipe 23 is respectively provided with an electric control valve 24 and a nozzle 21. In this way, the first water pipe 22 can supply water to the plurality of second water pipes 23 respectively, so that the plurality of nozzles 21 on the plurality of second water pipes 23 clean different positions in the cooling chamber 10, and the electric control valve 24 on each second water pipe 23 can be opened and closed by remote control, so that the nozzle 21 can be opened or closed remotely.

[0037] Here, during the spraying process, the pressure of the cleaning liquid in the first water pipe 22 and the second water pipe 23 is relatively high. Therefore, the first water pipe 22 and the second water pipe 23 can be made of stainless steel pipes to reduce the probability of the first water pipe 22 and the second water pipe 23 shaking during the spraying process due to the high pressure of the cleaning liquid in the first water pipe 22 and the second water pipe 23. Of course, it can also be as follows Figure 2 As shown in , a plurality of beams 19 are arranged in the cooling chamber 10, and the spraying mechanism 20 is connected to the plurality of beams 19 to reduce the probability of the first water pipe 22, the second water pipe 23, the electric control valve 24 and the nozzle 21 shaking; when the beam 19 is arranged, the first water pipe 22 can be arranged in the hollow of the beam 19 or along the extension direction of the beam 19 to further reduce the probability of the first water pipe 22 shaking. To ensure the stability and durability of the nozzle 21, the nozzle 21 can adopt a stainless steel solid conical nozzle structure. To ensure the sealing of the electric control valve 24, the electric control valve 24 can be a stainless steel ball valve.

[0038] In some embodiments, see Figure 1As shown, the inlet of the first water pipe 22 is located outside the cooling chamber 10, the portion of the first water pipe 22 located outside the cooling chamber 10 extends in the vertical direction and opens downward, and a first valve 221 is provided on the first water pipe 22; the spraying mechanism 20 also includes: a third water pipe 25 and a second valve 26, the third water pipe 25 is connected to the first water pipe 22 between the first valve 221 and the outer wall of the cooling chamber 10 at an angle, and the second valve 26 is provided on the third water pipe 25.

[0039] During the cooling process, the first valve 221 is in a closed state, and the second valve 26 is in an open state. In this way, when the first valve 221 leaks, the cleaning liquid in the first water pipe 22 can flow out from the opened second valve 26 through the outlet of the third water pipe 25, so that the operator can promptly discover the leakage of the first valve 221, thereby reducing the occurrence of the cleaning liquid entering the cooling chamber 10 and affecting the cooling quality due to the leakage of the first valve 221 during the cooling process. The third water pipe 25 is connected to the first water pipe 22 between the first valve 221 and the outer wall of the cooling chamber 10 at an angle, so that relative to the first water pipe 22 extending in the vertical direction and located outside the cooling chamber 10, the cleaning liquid can flow out more quickly from the end of the third water pipe 25 away from the first water pipe 22, so that it is easy for the operator to discover it in time. In specific implementation, in order to ensure the stroke and linearity of the first valve 221, as well as the pressure-bearing strength and corrosion resistance, the first valve 221 can be a stainless steel stop valve, and in order to reduce the vibration of the first valve 221 when the cleaning liquid flows in the first water pipe 22, the first valve 221 can be fixed on the outer wall of the cooling chamber 10, or the first valve 221 and the outer wall of the cooling chamber 10 can be connected respectively by reinforcing ribs. For easy operation, the first valve 221 can be set at a position close to the ground.

[0040] In some embodiments, the fluidized bed granulation equipment 100 may further include: a receiving device (not shown in the figure), the receiving device is provided with a receiving space, the receiving space is provided with an inlet upwardly, the inlet is opposite to the opening of the end of the third water pipe 25 away from the first water pipe 22, and there is a first distance between the inlet and the opening of the end of the third water pipe 25 away from the first water pipe 22. In this way, in the event of leakage of the first valve 221, the water in the first water pipe 22 is sent out through the third water pipe 25 and enters the receiving space of the receiving device, so as to reduce the situation where the water flowing out of the third water pipe 25 flows freely on the ground.

[0041] Here, the receiving device can be a funnel, and the large-sized opening of the funnel is opposite to the opening of the third water pipe 25 away from the end of the first water pipe 22, so as to reduce the probability of water sent out from the third water pipe 25 away from the end of the first water pipe 22 splashing and dripping on the ground, and the small-sized opening of the funnel can correspond to the internal space of the ditch, drainage ditch, sewage pipe, etc., so that the water flowing out of the third water pipe 25 can be directly discharged.

[0042] In some embodiments, see Figure 1 As shown, the fluidized bed granulation device 100 may further include a pressure gauge 27, which is disposed on the portion of the first water pipe 22 corresponding to the outside of the cooling chamber 10 and adjacent to the first valve 221. In this way, the pressure in the first water pipe 22 can be confirmed by the pressure gauge 27.

[0043] Here, the pressure gauge 27 can monitor the water pressure in the first water pipe 22 when the cooling chamber 10 is cleaned by the spraying mechanism 20. For example, when the first water pipe 22 and the second water pipe 23 are both two-inch stainless steel pipes, the water pressure should be no less than 0.3Mpa, and the range of the pressure gauge 27 is 0.6Mpa. Since the pressure gauge 27 is arranged near the first valve 221, the pressure information on the pressure gauge 27 can be conveniently observed, and the first valve 221 can be adjusted according to the pressure information on the pressure gauge 27.

[0044] In some embodiments, the spraying mechanism 20 further includes: an insulation layer (not shown in the figure), which is wrapped around the portion of the first water pipe 22 located outside the cooling chamber 10. Since the temperature of the high-temperature urea granules in the cooling chamber 10 is easily diffused to the first water pipe 22, the temperature of the portion of the first water pipe 22 located outside the cooling chamber 10 is too high, so the portion is wrapped with an insulation layer to prevent the operator from being scalded.

[0045] In some embodiments, see Figure 1 As shown, the first air inlet 13 and the first air outlet 14 are opposite to each other, so that more fluidizing air can be introduced into the cooling chamber 10 to accelerate the cooling of the high-temperature urea particles in the cooling chamber 10, and at the same time, a greater diffusion force can be applied to the water sprayed from the nozzle 21 to ensure the cleaning effect of the inner wall corresponding to the circle of side walls 18.

[0046] In some embodiments, see Figure 1As shown, the fluidized bed granulation equipment 100 may also include: a granulation chamber 30, having a second feed port (not shown in the figure), a second discharge port (corresponding to the position of the first feed port 11), a second air inlet 31 and a second air outlet 32, the second discharge port is connected to the first feed port 11, the second air inlet 31 and the second air outlet 32 ​​are both arranged between the second feed port and the second discharge port, and a second orifice plate 33 extending from the second feed port to the second discharge port is arranged in the granulation chamber 30, and the two sides of the second orifice plate 33 correspond to the second air inlet 31 and the second air outlet 32 ​​respectively. The second feed port is used to enter the urea granules to be enlarged, and the urea granules entering the granulation chamber 30 are located above the second orifice plate 33, and are suspended above the second orifice plate 33 under the action of the fluidizing air provided by the second air inlet 31 to the second air outlet 32, so as to carry out the enlargement process of the urea granules, and at the same time, the second discharge port is fed along the second orifice plate 33 to enter the first feed port 11.

[0047] In some embodiments, the fluidized bed granulation equipment 100 may further include: a cleaning mechanism, at least partially disposed in the granulation chamber 30, to deliver a cleaning liquid to the granulation chamber 30. Here, the cleaning mechanism may be the same as the spraying mechanism 20, or may be different. When the cleaning mechanism can remotely clean the inside of the granulation chamber 30, it is convenient to clean the inside of the fluidized bed granulation equipment 100, so as to further reduce labor costs. Here, the cleaning mechanism in the granulation chamber 30 and the spraying mechanism 20 in the cooling chamber 10 may be supplied with cleaning liquid from the same water supply source, or may be supplied with cleaning liquid from different water supply sources.

[0048] In a specific embodiment, see Figure 1 and Figure 2 As shown, the fluidized bed granulation apparatus 100 comprises:

[0049] The cooling chamber 10 includes: a top wall 16, a bottom wall 17 and a circle of side walls 18 arranged between the top wall 16 and the bottom wall 17, the first feed port 11 and the first discharge port 12 are respectively arranged at two positions opposite to each other on the circle of side walls 18, the first air inlet 13 is arranged on the bottom wall 17, the first air outlet 14 is arranged on the top wall 16, and the first air inlet 13 and the first air outlet 14 are opposite to each other; a first orifice plate 15 extending from the first feed port 11 to the first discharge port 12 is arranged inside the cooling chamber 10, and the two sides of the first orifice plate 15 correspond to the first air inlet 13 and the first air outlet 14 respectively.

[0050] The spraying mechanism 20 includes: a first water pipe 22 and a plurality of second water pipes 23 respectively connected to the first water pipe 22, the plurality of second water pipes 23 are arranged in the direction from the first feed port 11 to the first discharge port 12, and each second water pipe 23 is respectively provided with an electric control valve 24 and a nozzle 21. The outlet of the nozzle 21 corresponds to the first orifice plate 15 and has a distance with the first orifice plate 15, and the distance from the nozzle 21 to the first air outlet 14 is less than the distance from the nozzle 21 to the first orifice plate 15. The inlet of the first water pipe 22 is located outside the cooling chamber 10, the part of the first water pipe 22 located outside the cooling chamber 10 extends in the vertical direction and opens downward, and the first water pipe 22 is provided with a first valve 221. The spraying mechanism 20 also includes: a third water pipe 25 and a second valve 26, the third water pipe 25 is vertically connected to the first water pipe 22 between the first valve 221 and the outer wall of the cooling chamber 10, and the second valve 26 is provided on the third water pipe 25.

[0051] The pressure gauge 27 is disposed on a portion of the first water pipe 22 corresponding to the outside of the cooling chamber 10 and is disposed adjacent to the first valve 221 .

[0052] The heat-insulating layer is wrapped around the portion of the first water pipe 22 located outside the cooling chamber 10 .

[0053] The granulation chamber 30 has a second feed port, a second discharge port, a second air inlet 31 and a second air outlet 32. The second discharge port is connected to the first feed port 11. The second air inlet 31 and the second air outlet 32 ​​are both arranged between the second feed port and the second discharge port. A second orifice plate 33 extending from the second feed port to the second discharge port is arranged in the granulation chamber 30. The two sides of the second orifice plate 33 correspond to the second air inlet 31 and the second air outlet 32 ​​respectively.

[0054] The cleaning mechanism is at least partially disposed in the granulation chamber 30 to deliver cleaning liquid to the granulation chamber 30 .

[0055] When the cooling chamber 10 needs to be flushed, the first valve 221 is opened and the second valve 26 is closed, the electric-controlled valve 24 is slowly opened by remote control, and the water pressure in the first water pipe 22 is adjusted to 0.3Mpa according to the indication of the pressure gauge 27, so that the nozzle 21 sprays the cleaning liquid in the direction of the first orifice plate 15; after the cleaning is completed, the electric-controlled valve 24 is closed by remote control, and the first valve 221 is closed and the second valve 26 is opened, and the cleaning liquid in the first water pipe 22 is drained through the third water pipe 25, and the cleaning is completed.

[0056] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0057] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A fluidized bed granulation device, characterized in that: include: A cooling chamber, comprising a first feed port, a first discharge port, a first air inlet and a first air outlet, wherein the first air inlet and the first air outlet are both arranged between the first feed port and the first discharge port, and a first orifice plate extending from the first feed port to the first discharge port is arranged inside the cooling chamber, and two sides of the first orifice plate correspond to the first air inlet and the first air outlet respectively; A spraying mechanism is at least partially disposed inside the cooling chamber, a nozzle of the spraying mechanism is disposed between the first air outlet and the first orifice plate, and an outlet of the nozzle corresponds to the first orifice plate and has a distance from the first orifice plate.

2. The fluidized bed granulation equipment according to claim 1, characterized in that: The cooling chamber comprises a top wall, a bottom wall and a circle of side walls arranged between the top wall and the bottom wall, the first feed port and the first discharge port are respectively arranged at two positions opposite to each other on the circle of side walls, the first air inlet is arranged on the bottom wall, and the first air outlet is arranged on the top wall; The distance from the nozzle to the first air outlet is smaller than the distance from the nozzle to the first orifice plate.

3. The fluidized bed granulation equipment according to claim 2, characterized in that: The spraying mechanism includes: a first water pipe and a plurality of second water pipes respectively connected to the first water pipe, the plurality of second water pipes are arranged in a direction from the first feed port to the first discharge port, and each of the second water pipes is respectively provided with an electric control valve and the nozzle.

4. The fluidized bed granulation equipment according to claim 3, characterized in that: The inlet of the first water pipe is located outside the cooling chamber, the portion of the first water pipe located outside the cooling chamber extends in a vertical direction and opens downward, and a first valve is provided on the first water pipe; The spraying mechanism further includes: a third water pipe and a second valve, the third water pipe is connected with the first water pipe between the first valve and the outer wall of the cooling chamber at an angle, and the second valve is arranged on the third water pipe.

5. The fluidized bed granulation equipment according to claim 4, characterized in that: Also includes: A receiving device is provided with a receiving space, wherein the receiving space has an entrance upwardly opened, the entrance is opposite to the opening of the third water pipe away from one end of the first water pipe, and there is a first distance between the entrance and the opening of the third water pipe away from one end of the first water pipe.

6. The fluidized bed granulation equipment according to claim 4, characterized in that: Also includes: A pressure gauge is disposed on a portion of the first water pipe corresponding to the outside of the cooling chamber and is disposed adjacent to the first valve.

7. The fluidized bed granulation equipment according to claim 4, characterized in that: The spraying mechanism further includes: a heat-insulating layer, which is wrapped around a portion of the first water pipe located outside the cooling chamber.

8. The fluidized bed granulation equipment according to any one of claims 1 to 7, characterized in that: The first air inlet and the first air outlet are opposite to each other.

9. The fluidized bed granulation equipment according to claim 1, characterized in that: Also includes: A granulation chamber comprises a second feed port, a second discharge port, a second air inlet and a second air outlet, wherein the second discharge port is connected to the first feed port, the second air inlet and the second air outlet are both arranged between the second feed port and the second discharge port, and a second orifice plate extending from the second feed port toward the second discharge port is arranged in the granulation chamber, and the two sides of the second orifice plate correspond to the second air inlet and the second air outlet respectively.

10. The fluidized bed granulation equipment according to claim 9, characterized in that: Also includes: The cleaning mechanism is at least partially disposed in the granulation chamber to transport cleaning liquid to the granulation chamber.

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