Dust removal device for potassium nitrate drying equipment

Abstract

The utility model relates to a dust removal device for potassium nitrate drying equipment, belongs to the technical field of potassium nitrate production, and can reduce the cleaning times of the dust removal device within a certain time. The device comprises a shell, a first partition plate, a ceramic filter pipe and a cleaning mechanism. The first partition plate is arranged in the shell so as to divide the shell into a first cavity and a second cavity which communicate with the drying equipment. The ceramic filter pipe is provided with a sealed end located in the first cavity and an open end located in the second cavity. One part of the cleaning mechanism, the shell and the first partition plate jointly define a second cavity, and the other part of the cleaning mechanism is located in the first cavity. The pressure intensity in the second cavity is changed to drive the cleaning mechanism to move between the first position and the second position in the first direction, and the cleaning mechanism moves relative to the ceramic filter pipe to clean the outer surface of the ceramic filter pipe. When the cleaning mechanism is located at the second position, the second cavity communicates with the outside.

Description

Technical Field

[0001] The utility model belongs to the technical field of potassium nitrate production, in particular to a dust removal device for potassium nitrate drying equipment. Background Art

[0002] Potassium nitrate is a chemical substance with the chemical formula KNO3. It is commonly used in gunpowder, fertilizer, food additives and other fields. In gunpowder, potassium nitrate is an important oxidant that can provide oxygen to support combustion. In fertilizers, potassium nitrate can provide nitrogen, potassium and other elements required by plants. In food additives, potassium nitrate is often used as a preservative and pigment. Previously, potassium nitrate wet crystals were mainly dried by gas dryers. Although the vibrating fluidized bed dryer has a large processing capacity, it needs to exhaust a large amount of hot air. When the hot air is discharged, it will drive the fine dust of potassium nitrate to be discharged together, causing air pollution, so it needs to be dusted.

[0003] In the prior art, dust removal devices generally need to be cleaned regularly to ensure the normal operation of the filter device. Utility Model Content

[0004] The utility model provides a dust removal device for potassium nitrate drying equipment, which can reduce the number of times of cleaning the dust removal device within a certain period of time.

[0005] The utility model is realized by the following technical scheme: a dust removal device for potassium nitrate drying equipment, comprising:

[0006] case;

[0007] A first partition plate is disposed in the shell to separate the shell into a first cavity and a second cavity communicated with the drying device;

[0008] A ceramic filter tube having a sealed end located in the first cavity and an open end located in the second cavity;

[0009] A cleaning mechanism, a part of which is enclosed together with the shell and the first partition to form a second cavity, and another part of which is located in the first cavity, and the pressure change in the second cavity drives the cleaning mechanism to move along the first direction between the first position and the second position, and the cleaning mechanism moves relative to the ceramic filter tube to clean the outer surface of the ceramic filter tube;

[0010] When the cleaning mechanism is located at the second position, the second cavity is communicated with the outside.

[0011] Optionally, in order to better implement the utility model, the cleaning mechanism includes:

[0012] The second partition, together with the shell and the first partition, forms a second cavity. The shell has an air outlet. The pressure in the second cavity increases to drive the second partition to approach the air outlet along the first direction. When the cleaning mechanism is in the second position, the second partition is located outside the air outlet to connect the air outlet and the second cavity.

[0013] One end of the cleaning component is connected to the second partition plate, and the other end passes through the first partition plate to be located in the first cavity. The other end of the cleaning component is sleeved on the outer peripheral side of the ceramic filter tube.

[0014] Optionally, in order to better implement the utility model, the cleaning component includes:

[0015] A guide rod extends along a first direction, and a guide hole corresponding to the guide rod is formed on the first partition plate;

[0016] The installation frame is located in the first cavity and sleeved outside the ceramic filter tube. The other end of the guide rod passes through the guide hole and is connected to the installation frame.

[0017] The cleaning brush is arranged in the installation frame and is used for abutting against the outer side of the ceramic filter tube.

[0018] Optionally, in order to better implement the utility model, the cleaning mechanism also includes:

[0019] The elastic member is located in the first cavity, and two ends of the elastic member in the first direction are respectively connected to the installation frame and the first partition plate.

[0020] Optionally, in order to better implement the utility model, the dust removal device also includes:

[0021] The collecting barrel is connected to the first cavity, and along the first direction, the first partition, the sealing end and the collecting barrel are arranged in sequence.

[0022] Optionally, in order to better implement the utility model, the dust removal device also includes:

[0023] A guide plate, a side of the shell in the second direction has an air inlet connecting the drying device and the first cavity, the guide plate is arranged in the first cavity, along the first direction, the guide plate is located between the collecting barrel and the sealing end, the guide plate is connected to the side of the air inlet close to the sealing end in the first direction, and the distance between the guide plate and the air inlet in the second direction gradually increases in the direction away from the sealing end, and the second direction is perpendicular to the first direction.

[0024] Optionally, in order to better implement the present invention, the cross-sectional area of ​​the collecting barrel gradually decreases in the direction away from the sealing end.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The utility model provides a dust removal device for potassium nitrate drying equipment, which includes a shell, a first partition, a ceramic filter tube, and a cleaning mechanism. The first partition is arranged in the shell to separate the shell into a first cavity and a second cavity connected to the drying equipment. The ceramic filter tube has a sealed end located in the first cavity and an open end located in the second cavity. A part of the cleaning mechanism is enclosed together with the shell and the first partition to form the second cavity, and the other part is located in the first cavity. The pressure in the second cavity changes to drive the cleaning mechanism to move along the first direction between the first position and the second position, and the cleaning mechanism moves relative to the ceramic filter tube to clean the outer surface of the ceramic filter tube. When the cleaning mechanism is in the second position, the second cavity is connected to the outside.

[0027] Through the above structure, the dust removal device provided by the utility model can remove dust from the waste gas generated by the potassium nitrate drying device through the ceramic filter tube when filtering the drying device, and retain the dust in the first cavity, and at the same time, the filtered gas enters the second cavity through the open end, so that the air pressure in the second cavity increases so that part of the cleaning mechanism moves along the first direction to the second position, so as to open the second cavity, so that the filtered gas leaves the second cavity. During this period, the other part of the cleaning mechanism moves relative to the ceramic filter tube to clean the outer peripheral side of the ceramic filter tube. After the drying device stops working, no more waste gas enters the first cavity and the second cavity, so that the pressure in the second cavity becomes smaller. Thereby, part of the cleaning mechanism moves along the first direction to the first position, and then the other part of the cleaning mechanism moves relative to the ceramic filter tube to clean the outer peripheral side of the ceramic filter tube again. Thereby, the ceramic filter tube can be cleaned by the cleaning mechanism, and the cleanliness of the outer peripheral side of the ceramic filter tube is maintained for a long time, so that the number of cleaning times of the dust removal device within a certain period of time can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic structural diagram of a dust removal device for potassium nitrate drying equipment provided in an embodiment of the utility model;

[0030] Figure 2 for Figure 1 Middle AA section view;

[0031] Figure 3 for Figure 1 BB section view in;

[0032] Figure 4 A BB cross-sectional view of a dust removal device for a potassium nitrate drying device provided in an embodiment of the utility model when located in a second position;

[0033] Figure 5 A schematic structural diagram of a cleaning mechanism provided in an embodiment of the utility model.

[0034] In the figure:

[0035] 1-housing; 11-first cavity; 12-second cavity; 13-air inlet; 14-air outlet;

[0036] 2-first baffle; 21-guide hole;

[0037] 3-ceramic filter tube; 31-sealed end; 32-open end;

[0038] 4-cleaning mechanism; 41-second partition; 42-cleaning assembly; 421-guide rod; 422-mounting frame; 423-cleaning brush; 43-elastic member;

[0039] 5- Collection bucket;

[0040] 6-Guide plate. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0042] Example:

[0043] Reference Figure 1-Figure 5The present embodiment provides a dust removal device for potassium nitrate drying equipment, which can reduce the number of times the dust removal device is cleaned within a certain period of time. The cooling device for potassium nitrate production includes a shell 1, a first partition 2, a ceramic filter tube 3, and a cleaning mechanism 4. The first partition 2 is arranged in the shell 1 to separate the shell 1 into a first cavity 11 and a second cavity 12 connected to the drying equipment. The ceramic filter tube 3 has a sealed end 31 located in the first cavity 11 and an open end 32 located in the second cavity 12. A part of the cleaning mechanism 4 is enclosed together with the shell 1 and the first partition 2 to form the second cavity 12, and the other part is located in the first cavity 11. The pressure in the second cavity 12 changes to drive the cleaning mechanism 4 to move along the first direction, between the first position and the second position, and the cleaning mechanism 4 moves relative to the ceramic filter tube 3 to clean the outer surface of the ceramic filter tube 3. When the cleaning mechanism 4 is in the second position, the second cavity 12 is connected to the outside.

[0044] It should be noted that the ceramic filter tube 3, also known as a ceramic fiber tube, is a common filter element, which is usually used to filter impurities, solid particles or microorganisms in liquids or gases. They are made of ceramic materials and have good high temperature resistance, corrosion resistance and wear resistance. They are prior art and are not described in detail in this embodiment.

[0045] Through the above structure, the dust removal device provided by the utility model can remove dust from the waste gas generated by the potassium nitrate drying equipment through the ceramic filter tube 3. Figure 4 , the exhaust gas passes through the ceramic filter tube 3 along the N direction and enters the second cavity 12 from the open end 32 to be filtered by the ceramic filter tube 3, and the dust is retained in the first cavity 11. At the same time, the filtered gas enters the second cavity 12 through the open end 32 along the N direction, so that the air pressure in the second cavity 12 increases so that part of the cleaning mechanism 4 moves along the N1 direction (the N1 direction is parallel to the first direction) to the second position to open the second cavity 12, so that the filtered gas leaves the second cavity 12 along the N direction. During this period, another part of the cleaning mechanism 4 moves relative to the ceramic filter tube 3 along the N1 direction to clean the outer peripheral side of the ceramic filter tube 3. Refer to Figure 3 After the drying device stops working, no exhaust gas enters the first cavity 11 and the second cavity 12, so that the pressure in the second cavity 12 becomes smaller. As a result, part of the cleaning mechanism 4 moves toward the first position along the N2 direction (the N2 direction is parallel to the first direction and opposite to the N1 direction), and then another part of the cleaning mechanism 4 moves relative to the ceramic filter tube 3 along the N2 direction to clean the outer peripheral side of the ceramic filter tube 3. As a result, the ceramic filter tube 3 can be cleaned by the cleaning mechanism 4, and the cleanliness of the outer peripheral side of the ceramic filter tube 3 can be maintained for a long time, and the number of times the dust removal device is cleaned within a certain period of time can be reduced.

[0046] An optional implementation of this embodiment is as follows: the cleaning mechanism 4 includes a second partition 41 and a cleaning component 42. The second partition 41, the shell 1 and the first partition 2 together enclose a second cavity 12. The shell 1 has an air outlet 14, and the pressure in the second cavity 12 increases to drive the second partition 41 to approach the air outlet 14 along the N1 direction. When the cleaning mechanism 4 is in the second position, the second partition 41 is located outside the air outlet 14 to connect the air outlet 14 and the second cavity 12. The cleaning component 42 is connected to the second partition 41 at one end and passes through the first partition 2 at the other end to be located in the first cavity 11. The other end of the cleaning component 42 is sleeved on the outer peripheral side of the ceramic filter tube 3.

[0047] The second partition 41 is provided to enclose the second cavity 12 together with the shell 1 and the first partition 2, so that the air pressure in the second cavity 12 can drive the second partition 41 to move, thereby driving the cleaning assembly 42 to move, so that no additional driving device is required to drive the cleaning mechanism 4 to clean the ceramic filter tube 3. When the second partition 41 is set in the second position, it is located outside the air outlet 14 so that the second cavity 12 is connected to the outside, so that the air pressure in the second cavity 12 and the first cavity 11 will not be too high, thereby improving the safety of the device.

[0048] At the same time, the gas leaves the second cavity 12, causing the gas pressure in the second cavity 12 to drop, so that the second partition plate 41 moves in the N2 direction, so that the second cavity 12 continues to be closed, and the gas pressure in the second cavity 12 continues to increase. In this way, the cleaning assembly 42 can reciprocate between the first position and the second position, thereby better ensuring the cleanliness of the outer peripheral side of the ceramic filter tube 3.

[0049] An optional implementation of this embodiment is as follows: the cleaning assembly 42 includes a guide rod 421, a mounting frame 422 and a cleaning brush 423. The guide rod 421 extends along the first direction, and a guide hole 21 corresponding to the guide rod 421 is provided on the first partition plate 2. The mounting frame 422 is located in the first cavity 11 and is sleeved outside the ceramic filter tube 3. The other end of the guide rod 421 passes through the guide hole 21 and is connected to the mounting frame 422. The cleaning brush 423 is arranged in the mounting frame 422 and is used to abut against the outer side of the ceramic filter tube 3.

[0050] It should be noted that the cleaning brush 423 may be a wire brush to prevent it from being melted by the high-temperature exhaust gas.

[0051] By driving the installation frame 422 with the guide rod 421 so that the cleaning brush 423 cleans the outer peripheral side of the ceramic filter tube 3, the collision between the installation frame 422 and the ceramic filter tube 3 can be reduced, thereby reducing the risk of damage to the ceramic filter tube 3.

[0052] An optional implementation of this embodiment is as follows: the cleaning mechanism 4 further includes an elastic member 43. The elastic member 43 is located in the first cavity 11, and the two ends of the elastic member 43 in the first direction are respectively connected to the installation frame 422 and the first partition plate 2.

[0053] It should be noted that the elastic member 43 may be a spring, which extends along the first direction, and two ends of the spring are respectively connected to the mounting frame 422 and the first partition plate 2 .

[0054] It can be understood that the first direction can be the direction of gravity. In the embodiment where the first direction is the direction of gravity, the setting of the elastic member 43 can offset part of the gravity of the cleaning component 42 and the second partition 41, so that the gas in the second cavity 12 can push the second partition 41 to move to the second position with a smaller air pressure, thereby improving the safety of the device.

[0055] An optional implementation of this embodiment is as follows: the dust removal device further includes a collecting barrel 5. The collecting barrel 5 is connected to the first cavity 11, and along the first direction, the first partition plate 2, the sealing end 31 and the collecting barrel 5 are arranged in sequence.

[0056] In the embodiment where the first direction is the gravity direction, the collecting bucket 5 is located below the sealing end 31 to facilitate the collection of the potassium nitrate powder swept by the cleaning mechanism 4 for reuse.

[0057] An optional implementation of this embodiment is as follows: the dust removal device further includes a guide plate 6. The housing 1 has an air inlet 13 connecting the drying device and the first cavity 11 on one side in the second direction. The guide plate 6 is disposed in the first cavity 11, and along the first direction, the guide plate 6 is located between the collection barrel 5 and the sealing end 31, and the guide plate 6 is connected to the side of the air inlet 13 close to the sealing end 31 in the first direction. The distance H1 between the guide plate 6 and the air inlet 13 in the second direction gradually increases in the direction away from the sealing end 31, and the second direction is perpendicular to the first direction.

[0058] In this way, when potassium nitrate powder falls from the ceramic filter tube 3, it will move away from the air inlet 13 along the guide plate 6, thereby reducing the risk of potassium nitrate accumulation at the air inlet 13.

[0059] More preferably, the air inlet 13 is connected to a one-way valve to limit the movement of exhaust gas from the drying device to the first chamber 11 .

[0060] An optional implementation of this embodiment is as follows: the cross-sectional area of ​​the collecting barrel 5 gradually decreases.

[0061] In this way, potassium nitrate can be collected more centrally after it falls, making it easier to reuse it.

[0062] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dust removal device for potassium nitrate drying equipment, characterized in that: include: case; A first partition plate is disposed in the shell to separate the shell into a first cavity and a second cavity communicated with the drying device; A ceramic filter tube having a sealed end located in the first cavity and an open end located in the second cavity; A cleaning mechanism, a part of which is enclosed together with the shell and the first partition to form the second cavity, and another part of which is located in the first cavity, the pressure change in the second cavity drives the cleaning mechanism to move along the first direction between the first position and the second position, and the cleaning mechanism moves relative to the ceramic filter tube to clean the outer surface of the ceramic filter tube; When the cleaning mechanism is located at the second position, the second cavity is communicated with the outside.

2. The dust removal device for potassium nitrate drying equipment according to claim 1, characterized in that: The cleaning mechanism comprises: a second partition, which is enclosed together with the shell and the first partition to form the second cavity, the shell having an air outlet, the pressure in the second cavity increases to drive the second partition to approach the air outlet along the first direction, and when the cleaning mechanism is in the second position, the second partition is located outside the air outlet to connect the air outlet and the second cavity; A cleaning component has one end connected to the second partition plate and the other end passing through the first partition plate to be located in the first cavity. The other end of the cleaning component is sleeved on the outer peripheral side of the ceramic filter tube.

3. The dust removal device for a potassium nitrate drying equipment according to claim 2, characterized in that: The cleaning component comprises: A guide rod extending along the first direction, and a guide hole corresponding to the guide rod is formed on the first partition plate; An installation frame is located in the first cavity and is sleeved outside the ceramic filter tube, and the other end of the guide rod passes through the guide hole and is connected to the installation frame; A cleaning brush is arranged in the installation frame and is used for abutting against the outer side of the ceramic filter tube.

4. The dust removal device for potassium nitrate drying equipment according to claim 3, characterized in that: The cleaning mechanism also includes: An elastic member is located in the first cavity, and two ends of the elastic member in the first direction are respectively connected to the installation frame and the first partition.

5. A dust removal device for a potassium nitrate drying equipment according to any one of claims 1-4, characterized in that: The dust removal device also includes: The collecting barrel is connected to the first cavity, and along the first direction, the first partition, the sealing end and the collecting barrel are arranged in sequence.

6. The dust removal device for potassium nitrate drying equipment according to claim 5, characterized in that: The dust removal device also includes: A guide plate, wherein one side of the shell in the second direction has an air inlet connecting the drying device and the first cavity, the guide plate is arranged in the first cavity, and along the first direction, the guide plate is located between the collecting barrel and the sealing end, the guide plate is connected to the side of the air inlet close to the sealing end in the first direction, and the distance between the guide plate and the air inlet in the second direction gradually increases along the direction away from the sealing end, and the second direction is perpendicular to the first direction.

7. The dust removal device for potassium nitrate drying equipment according to claim 5, characterized in that: The cross-sectional area of ​​the collecting barrel gradually decreases in a direction away from the sealing end.

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