A drying bed cleaning device

Abstract

This utility model relates to a cleaning device for a nitrate drying bed. The cleaning device includes a bed body, a gas distribution plate, a baffle plate, and multiple air caps. The bed body is hollow inside and has an opening on one side, with an inlet and an outlet on opposite sides. The gas distribution plate and the baffle plate are both disposed inside the bed body, dividing the cavity inside the bed body into a drying chamber, a hot air chamber, and a cleaning chamber. The drying chamber is connected to both the inlet and the outlet. Multiple air caps penetrate the gas distribution plate and the baffle plate, and have a hot air outlet and a cleaning liquid outlet at one end of the drying chamber. The hot air outlet is connected to the hot air chamber to form a hot air channel, and the cleaning liquid outlet is connected to the cleaning chamber to form a cleaning channel. This nitrate drying bed cleaning device can improve cleaning efficiency while avoiding the problems of cumbersome pipeline laying and occupying external working space.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and in particular relates to a nitrate drying bed cleaning device. Background Technology

[0002] Fluidized bed dryers, especially sodium sulfate (Glauber's salt) drying beds, are key equipment in the chemical industry used to dehydrate wet sodium sulfate to produce sodium sulfate (anhydrous sodium sulfate). Their basic principle is to place the wet sodium sulfate material on a gas distribution plate within the bed and introduce high-temperature hot air from the bottom, causing the material to be in a fluidized state. This achieves efficient heat and mass transfer between the gas and solid phases, thus achieving the drying purpose.

[0003] During the use of a nitrate drying bed, volatile moisture and some fine material particles rise with the hot airflow, condense, and adhere to the relatively cool inner wall and top cover of the bed, accumulating over time to form a hard and thick scale layer. This scale layer not only affects the heat dissipation of the equipment and increases energy consumption, but may also fall off during vibration, contaminating qualified products below and seriously damaging the consistency of product quality.

[0004] Currently, cleaning the inner walls and top of the bed mainly relies on manual cleaning after shutdown, external high-pressure water gun rinsing, or spray nozzle rinsing. Manual cleaning suffers from drawbacks such as low efficiency, high risk, and harsh working conditions. When using external high-pressure water guns or spray nozzles, insufficient numbers result in low rinsing efficiency, blind spots, and an inability to thoroughly clean the entire side walls and top of the bed. Conversely, using too many water guns or spray nozzles leads to cumbersome piping installation and occupies external working space. Utility Model Content

[0005] In view of this, the present invention provides a cleaning device for nitrate drying beds to solve the problem of cleaning nitrate drying beds.

[0006] To achieve the above objectives, the technical solution of this utility model is to provide a cleaning device for a nitrate drying bed, comprising: a bed body, a gas distribution plate, a water baffle plate, and multiple air caps; the bed body is hollow inside and has an opening on one side, with a feed inlet and a discharge outlet on opposite sides respectively; the gas distribution plate and the water baffle plate are both disposed inside the bed body, dividing the cavity inside the bed body into a drying chamber, a hot air chamber, and a cleaning chamber in a direction perpendicular to the ground; the drying chamber is connected to the feed inlet and the discharge outlet respectively, and the hot air chamber and the cleaning chamber are connected to an external hot air source and a cleaning liquid source respectively; multiple air caps penetrate the gas distribution plate and the water baffle plate, and have a hot air outlet and a cleaning liquid outlet at one end of the drying chamber, wherein the hot air outlet is connected to the hot air chamber to form a hot air channel, and the cleaning liquid outlet is connected to the cleaning chamber to form a cleaning channel.

[0007] In one specific embodiment, the air cap includes a nozzle, an annular baffle, and a liquid guide tube. The nozzle is located inside the drying chamber, and both the hot air outlet and the cleaning liquid outlet are located on the nozzle. The liquid guide tube passes through the gas distribution plate and the baffle plate, with one end connected to the nozzle and communicating with the cleaning liquid outlet, and the other end away from the nozzle communicating with the cleaning chamber. The annular baffle passes through the gas distribution plate, with one end connected to the nozzle, surrounding the liquid guide tube, and having a gap between it and the liquid guide tube to form an annular cavity. The end of the annular cavity near the nozzle communicates with the hot air outlet, and the end away from the nozzle communicates with the hot air chamber.

[0008] In one specific embodiment, the nozzle is hollow inside, the cleaning fluid outlet is located at the top of the nozzle and penetrates the side wall of the nozzle, one end of the liquid guide tube extends into the interior of the nozzle and communicates with the cleaning fluid outlet; there are multiple hot air outlets, which are arranged around the cleaning fluid outlet and all penetrate the side wall of the nozzle, and the annular baffle communicates with the nozzle through the annular cavity formed with the liquid guide tube.

[0009] In one specific embodiment, the end of the nozzle away from the gas distribution plate is arc-shaped, and the plurality of hot air outlets are all disposed on the arc-shaped surface of the nozzle.

[0010] In one specific embodiment, the gas distribution plate is provided with a first through hole, and the water baffle is provided with a second through hole. The number of the first through hole and the second through hole are the same and there are multiple of them. Each first through hole is concentric with a second through hole. The annular baffle and the liquid guide tube on the multiple wind caps are respectively inserted into a first through hole and a second through hole concentric with it.

[0011] In one specific embodiment, the cleaning fluid outlet is a stepped hole with a baffle cap inside. The baffle cap includes a base plate and side plates surrounding the base plate. The end of the side plate away from the base plate is connected to the cleaning fluid outlet via an elastic element on the stepped surface of the cleaning fluid outlet. A through-hole is provided on the side plate.

[0012] In one specific embodiment, the axis of the water outlet is inclined in a direction away from the ground.

[0013] In one specific embodiment, the nitrate drying bed cleaning device further includes an upper cover located at the opening of the bed body and fastened to the bed body to open or close the opening of the bed body.

[0014] In one specific embodiment, the upper cover has multiple filter holes.

[0015] In one specific embodiment, a hot air inlet and a cleaning fluid inlet are provided on the side wall of the bed. The hot air inlet is connected to the hot air cavity, and the hot air source is connected to the hot air cavity through the hot air inlet. The cleaning fluid inlet is connected to the cleaning cavity, and the cleaning fluid source is connected to the cleaning cavity through the cleaning fluid inlet.

[0016] Compared with the prior art, the nitrate drying bed cleaning device provided by this utility model has the following beneficial effects: By setting up a gas distribution plate and a water baffle, the interior of the bed is divided into a drying chamber, a hot air chamber, and a cleaning chamber. After passing through the gas distribution plate and the water baffle through the air cap, a hot air channel and a cleaning channel are formed that are connected to the hot air chamber and the cleaning chamber, respectively. The functions of hot air drying and cleaning liquid spraying can be integrated into the air cap. This allows multiple nozzles to simultaneously rinse the bed, improving cleaning efficiency, while also avoiding the problems of complicated pipeline laying and occupying external working space. Attached Figure Description

[0017] Figure 1 An exploded structural diagram of the nitrate drying bed cleaning device provided by this utility model; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 A schematic cross-sectional view of the nitrate drying bed cleaning device; Figure 4 for Figure 1 A schematic diagram of the structure of a stroke cap; Figure 5 for Figure 4 A cross-sectional structural diagram of the stroke cap; Figure 6 for Figure 1 Schematic diagram showing the positional relationship between the stroke cap and the gas distribution plate; Figure 7 for Figure 1 The intended relationship between the position of the stroke cap and the water deflector; Figure 8 for Figure 1 Schematic diagram showing the positional relationship between the stroke cap and the shield; Figure 9 for Figure 8 A cross-sectional structural diagram showing the positional relationship between the stroke cap and the shield; Explanation of reference numerals in the attached figures: 1. Bed body; 11. Feed inlet; 12. Discharge outlet; 13. Hot air inlet; 14. Cleaning fluid inlet; 101. Drying chamber; 102. Hot air chamber; 103. Cleaning chamber; 2. Gas distribution plate; 21. First through hole; 3. Water baffle; 31. Second through hole; 4. Air cap; 41. Hot air outlet; 42. Cleaning fluid outlet; 43. Nozzle; 44. Annular baffle; 45. Liquid guide pipe; 46. Baffle cap; 461. Water outlet; 47. Elastic element; 401. Hot air channel; 402. Cleaning channel; 5. Top cover; 51. Filter hole. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] like Figures 1 to 3 As shown, this application provides a cleaning device for a nitrate drying bed, which includes: a bed body 1, a gas distribution plate 2, a water baffle 3, and multiple air caps 4; The bed 1 is hollow inside and has an opening on one side, with a feed inlet 11 and a discharge outlet 12 on its opposite sides; Gas distribution plate 2 and water baffle plate 3 are both installed inside the bed body 1, dividing the cavity inside the bed body 1 into drying chamber 101, hot air chamber 102 and cleaning chamber 103 in a direction perpendicular to the ground. Drying chamber 101 is connected to feed inlet 11 and discharge outlet 12 respectively, and hot air chamber 102 and cleaning chamber 103 are connected to external hot air source and cleaning liquid source respectively. Multiple air caps 4 penetrate the gas distribution plate 2 and the water baffle 3. At one end of the drying chamber 101, there is a hot air outlet 41 and a cleaning liquid outlet 42. The hot air outlet 41 is connected to the hot air chamber 102 to form a hot air channel 401, and the cleaning liquid outlet 42 is connected to the cleaning chamber 103 to form a cleaning channel 402.

[0020] Understandably, the feed inlet 11 is used to convey the material to be dried into the bed 1. After the material enters the drying chamber 101 through the feed inlet 11, an external hot air source injects heated hot air into the hot air chamber 102. The air cap 4 blows the hot air from the hot air outlet 41 through the hot air channel 401 to lift and heat the material, causing it to be in a fluidized state, thereby achieving the drying of the material. After the drying process is completed, the external hot air source stops injecting hot air, and the cleaning liquid source injects cleaning liquid into the cleaning chamber 103. The air cap 4 sprays the cleaning liquid from the cleaning liquid outlet 42 through the cleaning channel 402 to rinse the bed 1.

[0021] It should be noted that the power for the hot air and cleaning fluid can be achieved by setting up pumps or other power components. The flow rate of the hot air and cleaning fluid can be controlled by adjusting the power of the pumps or other power components to ensure that the material is fluidized and that scale on the bed 1 is flushed off. After rinsing, the cleaning fluid can be used to soak the drying chamber 101 to enhance the cleaning effect. After soaking, the cleaning fluid in the drying chamber 101 can be drained. The cleaning fluid can be drained by setting drainage holes on the side wall of the drying chamber 101.

[0022] In this embodiment, the hot air channel 401 and the cleaning channel 402 are independent of each other, and are used for the transmission of hot air during material drying and the output of cleaning liquid after drying, respectively. By setting the hot air channel 401 and the cleaning channel 402 on multiple air caps 4, the number of rinsing water columns can be increased, while eliminating the need for separate additional spray heads and corresponding pipelines, thus ensuring the cleaning effect without occupying working space.

[0023] In one embodiment, a hot air inlet 13 and a cleaning fluid inlet 14 are provided on the side wall of the bed body 1. The hot air inlet 13 is connected to the hot air chamber 102, and the hot air source is connected to the hot air chamber 102 through the hot air inlet 13. The cleaning fluid inlet 14 is connected to the cleaning chamber 103, and the cleaning fluid source is connected to the cleaning chamber 103 through the cleaning fluid inlet 14.

[0024] It is understandable that valves can be installed on both the hot air inlet 13 and the cleaning fluid inlet 14 to control the injection of hot air or cleaning fluid.

[0025] In one embodiment, such as Figures 4 to 5 As shown, the air cap 4 includes a nozzle 43, an annular baffle 44 and a liquid guide tube 45. The nozzle 43 is located in the drying chamber 101, and the hot air outlet 41 and the cleaning liquid outlet 42 are both located on the nozzle 43. The liquid guide tube 45 passes through the gas distribution plate 2 and the baffle plate 3. One end of the tube is connected to the nozzle 43 and communicates with the cleaning liquid outlet 42. The other end, away from the nozzle 43, is connected to the cleaning chamber 103. An annular baffle 44 penetrates the gas distribution plate 2, with one end connected to the nozzle 43. It surrounds the liquid guide pipe 45 and has a gap between it and the liquid guide pipe 45, forming an annular cavity. The end of the annular cavity near the nozzle 43 is connected to the hot air outlet 41, and the end away from the nozzle 43 is connected to the hot air cavity 102.

[0026] It is understandable that the length of the liquid guide tube 45 is greater than that of the annular baffle 44. It penetrates the gas distribution plate 2 and the water baffle 3, and its two ends are respectively connected to the cleaning liquid outlet 42 and the cleaning chamber 103, forming a cleaning channel 402. After penetrating the gas distribution plate 2, the annular baffle 44 is respectively connected to the hot air chamber 102 and the hot air outlet 41, forming a hot air channel 401.

[0027] The annular baffle 44 and the liquid guide pipe 45 form independent hot air channels 401 and cleaning channels 402, which can integrate the functions of air drying and liquid cleaning into the air cap 4. Thus, multiple air caps 4 can be used for all-round cleaning, without the need to set up additional spray heads and corresponding pipelines.

[0028] Furthermore, the nozzle 43 is hollow inside, the cleaning fluid outlet 42 is located at the top of the nozzle 43 and penetrates through the side wall of the nozzle 43, and one end of the liquid guide tube 45 extends into the interior of the nozzle 43 and communicates with the cleaning fluid outlet 42. There are multiple hot air outlets 41, which are arranged around the cleaning fluid outlet 42 and all penetrate the side wall of the nozzle 43. The annular baffle 44 is connected to the nozzle 43 through the annular cavity formed with the liquid guide pipe 45.

[0029] It is understandable that the nozzle 43 may have a slot that penetrates the side wall of the nozzle 43 at a position corresponding to the annular cavity, so as to realize the communication between the nozzle 43 and the annular cavity. Alternatively, an air pipe may be led out from the hot air outlet 41 and extended into the annular cavity to realize the communication between the hot air outlet 41 and the annular cavity, that is, the communication with the hot air chamber 102.

[0030] It should be noted that a one-way check valve or similar device can be installed at the hot air outlet 41 to prevent the cleaning fluid from flowing back into the hot air outlet 41 during bed cleaning.

[0031] Furthermore, the end of the nozzle 43 furthest from the gas distribution plate 2 is arc-shaped, and multiple hot air outlets 41 are all located on the arc-shaped surface of the nozzle 43.

[0032] Understandably, the arc-shaped surface of the nozzle 43 ensures that the airflow direction of the multiple hot air outlets 41 is lateral, thus ensuring the uniform distribution of airflow across the bed cross-section and forming a stable fluidized state.

[0033] In one embodiment, such as Figures 6 to 7 As shown, the gas distribution plate 2 has a first through hole 21 and the baffle plate 3 has a second through hole 31. The number of first through holes 21 and second through holes 31 is the same and there are multiple of them. Each first through hole 21 is concentric with a second through hole 31. The annular baffle 44 and liquid guide tube 45 on the multiple wind caps 4 are respectively connected to a first through hole 21 and a second through hole 31 concentric with it.

[0034] Understandably, the connection between the annular baffle 44 and the first through hole 21, and the connection between the liquid guide tube 45 and the second through hole 31, must be airtight. Sealing elements can be installed between the annular baffle 44 and the first through hole 21, and between the liquid guide tube 45 and the second through hole 31, to ensure that the gas in the hot air chamber 102 can only enter the annular cavity formed by the distance between the annular baffle 44 and the liquid guide tube 45, enter the nozzle 43 from the annular cavity, and flow out from the hot air outlet 41. Meanwhile, the cleaning fluid in the cleaning chamber 103 can only enter the liquid guide tube 45 and flow from the liquid guide tube 45 to the cleaning fluid outlet 42.

[0035] In this embodiment, the side of the annular baffle 44 away from the nozzle 43 is flush with the side of the gas distribution plate 2 near the water baffle 3, and the side of the liquid guide tube 45 away from the nozzle 43 is flush with the side of the water baffle 3 away from the gas distribution plate 2.

[0036] In one embodiment, such as Figures 8 to 9 As shown, the cleaning fluid outlet 42 is a stepped hole, and a baffle 46 is provided inside it. The baffle 46 includes a base plate and a side plate surrounding the base plate. The end of the side plate away from the base plate is connected to the cleaning fluid outlet 42 via an elastic member 47 on the stepped surface of the cleaning fluid outlet 42. A through water outlet hole 461 is provided on the side plate.

[0037] Understandably, in the initial state, the baffle 46 is located within the large-diameter section of the cleaning fluid outlet 42. The side wall of the cleaning fluid outlet 42 seals the water outlet 461 on the side plate of the baffle 46. When cleaning begins, the cleaning fluid in the cleaning chamber 103 flows through the cleaning channel 402 to the cleaning fluid outlet 42, squeezing the bottom plate of the baffle 46 and pushing the baffle 46 out of the cleaning fluid outlet 42, exposing the water outlet 461. This allows the cleaning fluid to be sprayed out from the water outlet 461, thus cleaning the bed 1. After cleaning is completed, the baffle 46 returns to the cleaning fluid outlet 42 under the elastic force of the elastic element 47.

[0038] By setting the baffle 46, it is possible to prevent the material from falling into the cleaning liquid outlet 42 during the drying process, and then entering the cleaning chamber 103 through the cleaning channel 402, thus causing contamination of the cleaning liquid.

[0039] It should be noted that the elastic force of the elastic element 47 needs to be adapted to the pressure of the cleaning fluid. That is, when cleaning begins, the pressure of the cleaning fluid can push open the stop cap 46, so that the elastic element 47 is in a stretched state.

[0040] Furthermore, the axis of the water outlet 461 is tilted away from the ground.

[0041] It is understandable that the water outlet 461 is tilted away from the ground, but when the cleaning fluid is sprayed out from the water outlet 461, the direction is tilted upward, so that the top of the bed body 1 can also be cleaned.

[0042] In one embodiment, the nitrate drying bed cleaning device further includes an upper cover 5, which is located at the opening of the bed body 1 and is fastened to the bed body 1 to open or close the opening of the bed body 1.

[0043] Understandably, by setting up the top cover 5, the fluidized material can be blocked during the drying process, preventing the material from being blown out of the bed by hot air from the opening. At the same time, by setting up the top cover 5, the interior of the bed 1 can also be insulated, reducing heat exchange between the interior of the bed 1 and the outside environment during the drying process, thereby improving drying efficiency.

[0044] Furthermore, the upper cover 5 has multiple filter holes 51.

[0045] Understandably, the multiple filter holes 51 are used to prevent material from being blown out of the bed 1 from the opening, and also to allow hot air to be blown out from the filter holes 51 to avoid excessive air pressure inside the bed 1.

[0046] The working principle of this utility model is as follows: First, the nitrate material to be dried is fed into one end of the drying chamber 101 inside the bed body 1 through the feed inlet 11. The external hot air source injects hot air into the hot air chamber 102, which acts as an air chamber. The hot air is sent into the hot air channels 401 of multiple air caps 4 and blown out from the hot air outlet 41. The material falling into the drying chamber 101 is blown from bottom to top, making the material fluidized. The material is dried by airflow and heat. Through the continuous feeding process of the material, the fluidized material is squeezed towards the discharge port 12 until it is discharged from the discharge port 12 and exited from the bed body 1, thus completing the drying process.

[0047] After the drying process is completed, hot air injection into the hot air chamber 102 is stopped, and cleaning fluid is injected into the cleaning chamber 103. Under liquid pressure, the cleaning fluid enters the cleaning channels 402 of multiple air caps 4 through multiple liquid guide pipes 45, and sprays out from the cleaning fluid outlet 42. After lifting the baffle 46, it sprays out from the water outlet 461 on the side plate of the baffle 46, rinsing the side walls and top of the bed 1. After rinsing, the cleaning fluid flows into the drying chamber 101 to accumulate and soak the drying chamber 101, cleaning the entire drying chamber 101 area of ​​the bed 1. After cleaning is completed, the cleaning fluid is discharged through the drain outlet (not shown in the figure). After the cleaning fluid is discharged, the drying chamber 101 can be purged again with pneumatic hot air to remove any remaining dirt and dry the cleaning fluid at the same time.

[0048] Compared with the prior art, the cleaning device for the nitrate drying bed provided by this utility model divides the interior of the bed into a drying chamber, a hot air chamber, and a cleaning chamber by setting a gas distribution plate and a water baffle. After passing through the gas distribution plate and the water baffle through the air cap, a hot air channel and a cleaning channel are formed that are respectively connected to the hot air chamber and the cleaning chamber. The functions of hot air drying and cleaning liquid spraying are integrated into the air cap, thereby realizing simultaneous rinsing of the bed by multiple nozzles, improving cleaning efficiency, and avoiding the situation of complicated pipeline laying and occupying external working space.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A nitrate drying bed cleaning device, characterized in that, include: Bed frame, gas distribution plate, water baffle and multiple wind caps; The bed is hollow inside and has an opening on one side, with a feed inlet and a discharge outlet on its opposite sides. The gas distribution plate and the water baffle are both installed in the bed body, dividing the cavity in the bed body into a drying chamber, a hot air chamber and a cleaning chamber in a direction perpendicular to the ground. The drying chamber is connected to the feed inlet and the discharge outlet respectively, and the hot air chamber and the cleaning chamber are connected to an external hot air source and a cleaning liquid source respectively. Multiple air caps penetrate the gas distribution plate and the water baffle plate. They have a hot air outlet and a cleaning liquid outlet at one end of the drying chamber. The hot air outlet is connected to the hot air chamber to form a hot air channel, and the cleaning liquid outlet is connected to the cleaning chamber to form a cleaning channel.

2. The nitrate drying bed cleaning device as described in claim 1, characterized in that: The air cap includes a nozzle, an annular baffle and a liquid guide tube. The nozzle is located inside the drying chamber. The hot air outlet and the cleaning liquid outlet are both located on the nozzle. The liquid guide tube passes through the gas distribution plate and the water baffle plate, with one end connected to the nozzle and communicating with the cleaning liquid outlet, and the other end away from the nozzle communicating with the cleaning chamber. The annular baffle penetrates the gas distribution plate, with one end connected to the nozzle, surrounding the liquid guide tube and having a gap between it and the liquid guide tube to form an annular cavity. The end of the annular cavity near the nozzle is connected to the hot air outlet, and the end away from the nozzle is connected to the hot air cavity.

3. The nitrate drying bed cleaning device as described in claim 2, characterized in that: The nozzle is hollow inside, the cleaning fluid outlet is located at the top of the nozzle and penetrates through the side wall of the nozzle, and one end of the liquid guide tube extends into the interior of the nozzle and communicates with the cleaning fluid outlet. The number of hot air outlets is multiple, and the multiple hot air outlets are arranged around the cleaning liquid outlet and all penetrate the side wall of the nozzle. The annular baffle is connected to the nozzle through the annular cavity formed with the liquid guide tube.

4. The nitrate drying bed cleaning device as described in claim 3, characterized in that: The end of the nozzle furthest from the gas distribution plate is arc-shaped, and multiple hot air outlets are located on the arc-shaped surface of the nozzle.

5. The nitrate drying bed cleaning device as described in claim 2, characterized in that: The gas distribution plate has a first through hole, and the water baffle plate has a second through hole. The number of the first through hole and the second through hole are the same and there are multiple of them. Each first through hole is concentric with a second through hole. The annular baffle and the liquid guide tube on the multiple wind caps are respectively inserted into a first through hole and a second through hole concentric with it.

6. The nitrate drying bed cleaning device as described in claim 1, characterized in that: The cleaning fluid outlet is a stepped hole with a baffle cap inside. The baffle cap includes a base plate and side plates surrounding the base plate. The end of the side plate away from the base plate is connected to the cleaning fluid outlet via an elastic element on the stepped surface of the cleaning fluid outlet. A through-hole is provided on the side plate.

7. The nitrate drying bed cleaning device as described in claim 6, characterized in that: The axis of the water outlet is inclined away from the ground.

8. The nitrate drying bed cleaning device as described in claim 1, characterized in that: The nitrate drying bed cleaning device also includes an upper cover, which is located at the opening of the bed body and is fastened to the bed body to open or close the opening of the bed body.

9. The nitrate drying bed cleaning device as described in claim 8, characterized in that, include: The top cover has multiple filter holes.

10. The nitrate drying bed cleaning device as described in claim 1, characterized in that, include: The bed body has a hot air inlet and a cleaning fluid inlet on its side wall. The hot air inlet is connected to the hot air chamber, and the hot air source is connected to the hot air chamber through the hot air inlet. The cleaning fluid inlet is connected to the cleaning chamber, and the cleaning fluid source is connected to the cleaning chamber through the cleaning fluid inlet.

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