Cyclone separator convenient to disassemble and clean

Abstract

The invention provides a cyclone separator convenient to disassemble and clean. The cyclone separator comprises a primary separator and a secondary separator, the first-stage separator comprises a first air inlet pipe, a first conical pipe, a first straight cylinder section, a first gradually-shrinking section, a first collecting bottle and a first exhaust pipe; the second-stage separator comprises a second air inlet pipe, a second conical pipe, a second straight barrel section, a second gradually-shrinking section, a second collecting bottle and a second exhaust pipe; a first movable joint is arranged at a pipe orifice of the first exhaust pipe, and a first external thread is arranged at a pipe orifice of the second air inlet pipe; the first movable joint is matched with the first external thread, and detachable sealing connection is formed between the first-stage separator and the second-stage separator; powder-containing airflow sequentially passes through the first-stage separator and the second-stage separator to be subjected to two-stage separation, and separated exhaust gas is exhausted from the second exhaust pipe. According to the invention, the separation effect and the accuracy and reliability of pulverized coal sampling are improved, and the sampling error caused by blockage of the separator is reduced.

Description

Technical Field

[0001] This application relates to the technical field of industrial equipment, and particularly relates to a cyclone separator that is convenient for disassembly and cleaning. Background Art

[0002] The fineness of pulverized coal is an index that is strictly controlled during the operation of a coal-fired power plant boiler, and it is also an important parameter for optimizing combustion and improving the economic efficiency of boiler operation. Since the pulverized coal conveying pipeline in the direct-fired pulverizing system of a boiler is under positive pressure, a special pulverized coal sampling device is required for pulverized coal sampling.

[0003] The cyclone separator is a part of the pulverized coal sampling device, and its function is to separate and store the pulverized coal in the pulverized coal-containing gas stream. The pulverized coal-containing gas stream tangentially enters the cyclone separator, and the gas flow changes from linear motion to circular motion. Most of the rotating gas flow rotates downward along the inner wall of the cyclone separator, which is the outer swirl flow. When the gas flow reaches near the bottom of the cyclone separator, the gas flow reverses and rotates upward and finally discharges from the exhaust pipe, which is the inner swirl flow. During the whole process, the pulverized coal is separated under the action of centrifugal force and gravity and falls into the collection bottle; a small amount of pulverized coal and gas that are not separated are discharged from the exhaust pipe under the action of the inner swirl flow.

[0004] Since the raw coal contains a certain amount of moisture, after being ground into pulverized coal, this moisture still exists in the pulverized coal-containing gas stream and is extremely easy to accumulate in some dead corners. As the temperature decreases, the moisture will precipitate when cooled and act on the pulverized coal particles, causing caking or agglomeration, resulting in blockage of the cyclone separator and affecting the separation efficiency. At this time, compressed air or a mechanical brush needs to be used to clean the cyclone separator. However, the existing cyclone separator is of an integral structure, only the collection bottle can be disassembled, the other parts are welded together and cannot be disassembled, and the exhaust pipe is a right-angle elbow, which easily causes scale accumulation and blockage inside the cyclone separator and is difficult to clean, affecting the separation efficiency. Summary of the Invention

[0005] In view of the problems in the prior art, the embodiments of this application provide a cyclone separator that is convenient for disassembly and cleaning, which can solve the problems existing in the prior art.

[0006] In a first aspect, this application provides a cyclone separator that is convenient for disassembly and cleaning, including: a primary separator and a secondary separator;

[0007] The primary separator includes a first inlet pipe, a first conical pipe, a first straight cylinder section, a first tapered section, a first collection bottle, and a first exhaust pipe;

[0008] The secondary separator includes a second inlet pipe, a second conical pipe, a second straight cylinder section, a second tapered section, a second collection bottle, and a second exhaust pipe;

[0009] The nozzle of the first exhaust pipe is provided with a first union joint, and the nozzle of the second intake pipe is provided with a first external thread; the first union joint is engaged with the first external thread to form a detachable sealed connection between the primary separator and the secondary separator.

[0010] The powder-containing gas stream passes through the primary separator and the secondary separator in sequence for two-stage separation, and the exhausted gas after separation is discharged from the second exhaust pipe.

[0011] Further, the nozzle of the first intake pipe is provided with a second union joint, which is threadedly connected to the external thread at the tail of the sampling pipe, and the powder-containing gas stream enters the first intake pipe from the sampling pipe.

[0012] Further, the first exhaust pipe and the second exhaust pipe are L-shaped hollow equal-diameter pipes with 90° arc-shaped elbows.

[0013] Further, the first conical tube is fixed to both the first intake pipe and the first straight tube section by welding; a end cap with a first through hole in the center is provided at the upper end of the first straight tube section, and the first exhaust pipe is connected to the first straight tube section through the first through hole.

[0014] The powder-containing gas stream tangentially enters the first conical tube from the first intake pipe to form a swirling gas stream, and continuously rotates through the first straight tube section; the gas after primary separation is discharged from the first exhaust pipe.

[0015] Further, the second conical tube is fixed to both the second intake pipe and the second straight tube section by welding; a end cap with a second through hole in the center is provided at the upper end of the second straight tube section, and the second exhaust pipe is connected to the second straight tube section through the second through hole.

[0016] The gas after primary separation tangentially enters the second conical tube from the second intake pipe to form a swirling gas stream, and continuously rotates through the second straight tube section, and the exhausted gas after secondary separation is discharged from the second exhaust pipe.

[0017] Further, the upper end of the first tapered section is provided with a second external thread, and the lower end of the first straight tube section is provided with a first internal thread; the second external thread is engaged with the first internal thread to form a detachable connection.

[0018] Further, the upper end of the second tapered section is provided with a third external thread, and the lower end of the second straight tube section is provided with a second internal thread; the third external thread is engaged with the second internal thread to form a detachable connection.

[0019] Further, the first collection bottle includes a first upper end cap, a first bottle body and a first lower end cap; the first bottle body is fixed to the first lower end cap by welding.

[0020] The diameter of the middle hole of the first upper end cap is the same as the inner diameter of the lower end of the first tapered section, and the first upper end cap and the first tapered section are fixed by welding;

[0021] The first upper end cap is provided with a third internal thread, and the upper end of the first bottle body is provided with a fourth external thread; the fourth external thread and the third internal thread cooperate to form a detachable connection.

[0022] Further, the second collection bottle includes a second upper end cap, a second bottle body and a second lower end cap; the second bottle body and the second lower end cap are fixed by welding;

[0023] The diameter of the middle hole of the second upper end cap is the same as the inner diameter of the lower end of the second tapered section, and the second upper end cap and the second tapered section are fixed by welding;

[0024] The second upper end cap is provided with a fifth internal thread, and the upper end of the second bottle body is provided with a sixth external thread; the sixth external thread and the fifth internal thread cooperate to form a detachable connection.

[0025] Further, the inner diameters of the second inlet pipe and the first exhaust pipe are the same.

[0026] The present application provides a cyclone separator that is convenient for disassembly and cleaning, including: a primary separator and a secondary separator; the primary separator includes a first inlet pipe, a first conical pipe, a first straight cylinder section, a first tapered section, a first collection bottle and a first exhaust pipe; the secondary separator includes a second inlet pipe, a second conical pipe, a second straight cylinder section, a second tapered section, a second collection bottle and a second exhaust pipe; a first quick coupling is provided at the pipe orifice of the first exhaust pipe, and a first external thread is provided at the pipe orifice of the second inlet pipe; the first quick coupling and the first external thread cooperate to form a detachable and sealed connection between the primary separator and the secondary separator; the pulverized coal-containing gas stream sequentially passes through the primary separator and the secondary separator for two-stage separation, and the exhausted gas after separation is discharged from the second exhaust pipe. The cyclone separator provided by the present application that is convenient for disassembly and cleaning realizes the quick disassembly and assembly between various components, reduces the complexity of operation and time cost, is convenient for cleaning the accumulated pulverized coal inside, helps to maintain the good working state of the cyclone separator, improves the separation effect and the accuracy and reliability of pulverized coal sampling, and reduces the sampling error caused by the blockage of the cyclone separator. Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of a cyclone separator that is easy to disassemble and clean provided by an embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram of a primary separator provided by an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of a secondary separator provided by an embodiment of the present application;

[0031] Figure 4 is a top view of the structural relationship of the intake pipe, conical pipe, and straight barrel section of the primary separator provided by an embodiment of the present application;

[0032] Figure 5 is a top view of the structural relationship of the intake pipe, conical pipe, and straight barrel section of the secondary separator provided by an embodiment of the present application. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer and more understandable, the following will further elaborate on the embodiments of the present application with reference to the drawings. Here, the illustrative embodiments of the present application and their descriptions are used to explain the present application, but not to limit the present application. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0034] Figure 1 is a schematic structural diagram of a cyclone separator that is easy to disassemble and clean provided by an embodiment of the present application. As Figure 1 shown, the cyclone separator that is easy to disassemble and clean provided by the present application includes: a primary separator 1 and a secondary separator 2;

[0035] From Figures 1 to 3 it can be known that the primary separator 1 includes a first intake pipe 11, a first conical pipe 12, a first straight barrel section 13, a first tapered section 14, a first collection bottle 15, and a first exhaust pipe 16;

[0036] The secondary separator 2 includes a second intake pipe 21, a second conical pipe 22, a second straight barrel section 23, a second tapered section 24, a second collection bottle 25, and a second exhaust pipe 26;

[0037] A first union joint 17 is provided at the nozzle of the first exhaust pipe 16, and a first external thread 27 is provided at the nozzle of the second intake pipe 21; the first union joint 17 mates with the first external thread 27 to form a detachable sealed connection between the primary separator 1 and the secondary separator 2;

[0038] The pulverized coal-containing gas stream passes through the primary separator 1 and the secondary separator 2 in sequence for two-stage separation, and the exhausted gas after separation is discharged from the second exhaust pipe 26.

[0039] Specifically, when using a cyclone separator, the pulverized coal-containing gas stream enters the intake pipe 11 of the primary separator 1 through the sampling pipe, and two-stage gas-solid separation is carried out successively in the primary separator 1 and the secondary separator 2. The separated pulverized coal falls into the collection bottles of the primary separator 1 and the secondary separator 2 respectively, and the exhausted gas after separation is finally discharged through the exhaust pipe 26 of the secondary separator 2.

[0040] A union joint 17 is provided at the nozzle of the exhaust pipe 16 of the primary separator 1, and an external thread 27 is provided at the nozzle of the intake pipe 21 of the secondary separator 2. The union joint 17 is screwed with the external thread 27 to form a detachable sealed connection, realizing the modular docking between the primary separator 1 and the secondary separator 2.

[0041] Through the above design, the primary separator 1 and the secondary separator 2 can be disassembled or combined, significantly improving the cleaning efficiency and the stability of equipment operation, avoiding affecting the sampling accuracy due to the caking and blockage of pulverized coal, and enhancing the overall reliability and maintenance convenience of the pulverized coal sampling system.

[0042] In one embodiment, the materials of all components of the cyclone separator are made of stainless steel to improve the corrosion resistance, service life and high-temperature adaptability of the equipment.

[0043] In one embodiment, the union joint 17 is a metal connecting piece for easy disassembly and assembly, and its outer surface is a hexagonal structure, facilitating the tightening or disassembly operation using tools such as wrenches.

[0044] Figure 2 It is a schematic structural diagram of the primary separator 1 provided by an embodiment of the present application. As Figure 2 shown, a second union joint 18 is provided at the nozzle of the first intake pipe 11, which is connected to the external thread at the tail of the sampling pipe, and the pulverized coal-containing gas stream enters the first intake pipe 11 from the sampling pipe.

[0045] Specifically, the intake pipe 11 of the primary separator 1 has a hollow and equal-diameter structure. A union 18 is provided at its pipe orifice, which is in threaded fit connection with the external thread provided at the tail of the pulverized coal sampling pipe, forming a reliable threaded seal interface. The inner diameter of the intake pipe 11 of the primary separator 1 is the same as that of the pulverized coal sampling pipe. Through this connection method, the rapid docking and disconnection of the intake pipe 11 of the primary separator 1 and the sampling pipe can be realized, which is convenient for the daily maintenance of the equipment and the replacement of components.

[0046] In one embodiment, the union 18 is a metal connecting piece that is convenient for disassembly and assembly. Its outer surface has a hexagonal structure, which is convenient for using tools such as wrenches for tightening or disassembling operations.

[0047] In one embodiment, as Figure 2 shown, the first conical tube 12 is fixedly connected to both the first intake pipe 11 and the first straight tube section 13 by welding; a end cap with a first through hole in the center is provided at the upper end of the first straight tube section 13, and the first exhaust pipe 16 is connected to the first straight tube section 13 through the first through hole;

[0048] The pulverized coal-containing gas flow tangentially enters the first conical tube 12 from the first intake pipe 11, forming a swirling gas flow, and continuously rotates through the first straight tube section 13; the gas after the first separation is discharged from the first exhaust pipe 16.

[0049] Specifically, the conical tube 12 of the primary separator 1 is connected to the intake pipe 11 of the primary separator 1 by welding. The pulverized coal-containing gas flow tangentially enters the conical tube 12 of the primary separator 1 from the intake pipe 11 of the primary separator 1. The conical tube 12 of the primary separator 1 has a hollow conical structure, and its inner wall is smooth and in a continuously contracting state, which is beneficial to guiding the tangentially entering pulverized coal-containing gas flow to form a stable swirling motion.

[0050] The conical tube 12 of the primary separator 1 cooperates with the straight tube section 13, so that the pulverized coal-containing gas flow forms a circular motion in the primary separator 1, realizing the preliminary centrifugal separation of pulverized coal. The swirling gas flow extends downward along the conical tube 12 of the primary separator 1 to the straight tube section 13 of the primary separator 1, and continues to maintain its swirling state in the straight tube section 13 of the primary separator 1, thereby extending the separation path and improving the pulverized coal separation efficiency.

[0051] The straight tube section 13 of the primary separator 1 is a vertically arranged hollow and equal-diameter cylinder. An end cap is provided at the upper end, and a through hole is provided in the center of the end cap. The exhaust pipe 16 of the primary separator 1 is inserted into this through hole, and its insertion depth is the same as the height of the straight tube section 13 of the primary separator 1.

[0052] In one embodiment, the structural relationship among the intake pipe 11, the conical tube 12, and the straight tube section 13 of the primary separator 1 is as Figure 4 shown.

[0053] Figure 3 is a schematic structural diagram of the secondary separator 2 provided in an embodiment of the present application. As Figure 3 shown, the second conical tube 22 is fixedly connected to the second intake pipe 21 and the second straight tube section 23 by welding; an end cap with a second through hole in the center is provided at the upper end of the second straight tube section 23, and the second exhaust pipe 26 is connected to the second straight tube section 23 through the second through hole;

[0054] The gas after the first separation tangentially enters the second conical tube 22 from the second intake pipe 21, forms a swirling airflow, and continuously rotates through the second straight tube section 23. The exhausted gas after the second separation is discharged from the second exhaust pipe 26.

[0055] Specifically, the conical tube 22 of the secondary separator 2 is connected to the intake pipe 21 of the secondary separator 2 by welding. The gas after the first separation enters the conical tube 22 of the secondary separator 2 tangentially from the intake pipe 21 of the secondary separator 2. The conical tube 22 of the secondary separator 2 is a hollow conical structure with a smooth inner wall and a continuously contracting state, which is beneficial to guiding the gas after the first separation entering tangentially to form a stable rotational motion.

[0056] The conical tube 22 of the secondary separator 2 cooperates with the straight tube section 23, so that the gas after the first separation forms a circular motion in the secondary separator 2, realizing the secondary centrifugal separation of pulverized coal. The swirling airflow extends downward along the conical tube 22 of the secondary separator 2 to the straight tube section 23 of the secondary separator 2, and continues to maintain its swirling state in the straight tube section 23 of the secondary separator 2, thereby extending the separation path and improving the pulverized coal separation efficiency.

[0057] The straight tube section 23 of the secondary separator 2 is a vertically arranged hollow equal-diameter cylinder, and an end cap is provided at the upper end. A through hole is provided in the center of the end cap, and the exhaust pipe 26 of the secondary separator 2 is inserted into the through hole, and the insertion depth is the same as the height of the straight tube section 23 of the secondary separator 2.

[0058] In an embodiment, the structural relationship of the intake pipe 21, the conical tube 22 and the straight tube section 23 of the secondary separator 2 is as Figure 5 shown.

[0059] In an embodiment, as Figure 2 and Figure 3 shown, the first exhaust pipe 16 and the second exhaust pipe 26 are L-shaped hollow equal-diameter pipes with a 90° arc elbow.

[0060] Specifically, the exhaust pipe 16 of the primary separator 1 and the exhaust pipe 26 of the secondary separator 2 are both L-shaped hollow equal-diameter pipes with a 90° arc elbow, which is convenient for subsequent cleaning of the inside of the pipe with a mechanical brush.

[0061] In an embodiment, as Figure 2As shown, the upper end of the first tapered section 14 is provided with a second external thread 19, and the lower end of the first straight section 13 is provided with a first internal thread; the second external thread 19 cooperates with the first internal thread to form a detachable connection.

[0062] Specifically, the tapered section 14 of the primary separator 1 is a hollow conical structure for guiding the pulverized coal after cyclone separation to converge downward. Its upper end is provided with an external thread 19; the lower end of the straight section 13 of the primary separator 1 is correspondingly provided with an internal thread. This external thread 19 cooperates with this internal thread to form a detachable threaded connection structure. Through this structure, rapid assembly and disassembly between the tapered section 14 and the straight section 13 of the primary separator 1 can be achieved, facilitating on-site operators to quickly open the connection during equipment maintenance or cleaning, extract the residual pulverized coal inside, or perform brushing operations.

[0063] Compared with the traditional welded structure, this threaded connection method has higher maintenance convenience. Its sealing performance can be further improved by setting a sealing ring or machining a high-precision thread surface to ensure that the pulverized coal-containing airflow does not leak from the connection during operation.

[0064] During actual use, when the primary separator 1 becomes blocked, severely accumulates powder, or requires regular maintenance, the operator only needs to rotate the tapered section 14 of the primary separator 1 to quickly disassemble the lower structure, greatly improving the maintainability and operational reliability of the equipment.

[0065] In one embodiment, in order to enhance the connection strength and wear resistance, the thread can be selected as a triangular tooth type or an arc type thread and made of stainless steel material, taking into account performance requirements such as high strength, corrosion resistance, and high-temperature stability.

[0066] In one embodiment, as Figure 3 As shown, the upper end of the second tapered section 24 is provided with a third external thread 28, and the lower end of the second straight section 23 is provided with a second internal thread; the third external thread 28 cooperates with the second internal thread to form a detachable connection.

[0067] Specifically, the tapered section 24 of the secondary separator 2 is a hollow conical structure for guiding the pulverized coal after cyclone separation to converge downward. Its upper end is provided with an external thread 28; the lower end of the straight section 23 of the secondary separator 2 is correspondingly provided with an internal thread. This external thread 28 cooperates with this internal thread to form a detachable threaded connection structure. Through this structure, rapid assembly and disassembly between the tapered section 24 and the straight section 23 of the secondary separator 2 can be achieved, facilitating on-site operators to quickly open the connection during equipment maintenance or cleaning, extract the residual pulverized coal inside, or perform brushing operations.

[0068] Compared with the traditional welded structure, this threaded connection method has higher maintenance convenience. Its sealing performance can be further improved by setting a sealing ring or machining a high-precision threaded surface to ensure that the powder-containing air flow does not leak from the connection during operation.

[0069] In actual use, when the secondary separator 2 becomes blocked, seriously accumulates powder, or requires regular maintenance, the operator only needs to rotate the tapered section 24 of the secondary separator 2 to quickly disassemble the lower structure, greatly improving the maintainability and operation reliability of the equipment.

[0070] In one embodiment, in order to enhance the connection strength and wear resistance, the thread can be selected as a triangular tooth type or an arc type thread and made of stainless steel material, taking into account performance requirements such as high strength, corrosion resistance, and high-temperature stability.

[0071] In one embodiment, as Figure 2 shown, the first collection bottle 15 includes a first upper end cap 151, a first bottle body 152, and a first lower end cap 153; the first bottle body 152 is fixedly connected to the first lower end cap 153 by welding;

[0072] The diameter of the middle hole of the first upper end cap 151 is the same as the inner diameter of the lower end of the first tapered section 14, and the first upper end cap 151 is fixedly connected to the first tapered section 14 by welding;

[0073] A third internal thread is provided inside the first upper end cap 151, and a fourth external thread 110 is provided at the upper end of the first bottle body 152; the fourth external thread 110 is matched with the third internal thread to form a detachable connection.

[0074] Specifically, the collection bottle 15 of the primary separator 1 is used to collect the pulverized coal that has been separated and settled by cyclone separation in the primary separator 1, and its structure includes: an upper end cap 151, a bottle body 152, and a lower end cap 153.

[0075] Among them, the bottle body 152 of the collection bottle 15 of the primary separator 1 is a hollow cylindrical structure, and its lower end is fixedly connected to the lower end cap 153 by welding to form a closed bottom structure to prevent the pulverized coal from leaking. The bottle body 152 is made of stainless steel material, with good wear resistance and structural strength, adapting to the working conditions of pulverized coal scouring and temperature fluctuations.

[0076] The upper end cap 151 of the collection bottle 15 of the primary separator 1 is connected to the tapered section 14 of the primary separator 1 by welding to form a sealed transition structure to prevent the powder-containing air flow from leaking or escaping. A perforation is provided at the central position of the upper end cap 151, and the diameter of the perforation is the same as the inner diameter of the lower end of the tapered section 14 of the primary separator 1 to ensure that the separated and falling pulverized coal can smoothly enter the interior of the collection bottle.

[0077] To achieve the convenient disassembly and cleaning of the collection bottle, internal threads are machined on the inner wall of the upper end cover 151 of the collection bottle 15 of the primary separator 1, and external threads 110 that match them are provided on the outer surface of the upper end of the bottle body 152. The cooperation of the internal threads and the external threads 110 forms a detachable connection structure, and the operator can complete the disassembly and assembly operations of the collection bottle by rotating the bottle body 152.

[0078] This threaded connection structure not only improves the assembly flexibility of the equipment, but also facilitates the periodic collection of pulverized coal inside the collection bottle 15 of the primary separator 1, thus enhancing the overall working efficiency.

[0079] In one embodiment, to ensure a good sealing effect at the threaded connection, an O-ring or a sealing washer is provided at the threaded interface to prevent the leakage of pulverized coal particles or gas.

[0080] In one embodiment, as Figure 3 shown, the second collection bottle 25 includes a second upper end cover 251, a second bottle body 252, and a second lower end cover 253; the second bottle body 252 and the second lower end cover 253 are fixed by welding;

[0081] the diameter of the middle hole of the second upper end cover 251 is the same as the inner diameter of the lower end of the second tapered section 24, and the second upper end cover 251 and the second tapered section 24 are fixed by welding;

[0082] a fifth internal thread is provided inside the second upper end cover 251, and a sixth external thread 29 is provided at the upper end of the second bottle body 252; the sixth external thread 29 and the fifth internal thread cooperate to form a detachable connection.

[0083] Specifically, the collection bottle 25 of the secondary separator 2 is used to collect the pulverized coal that has settled by cyclone separation in the secondary separator 2, and its structure includes: an upper end cover 251, a bottle body 252, and a lower end cover 253.

[0084] Among them, the bottle body 252 of the collection bottle 25 of the secondary separator 2 is a hollow cylindrical structure, and its lower end is fixedly connected to the lower end cover 253 by welding to form a closed bottom structure to prevent the leakage of pulverized coal. The bottle body 252 is made of stainless steel, with good wear resistance and structural strength, and is suitable for the working conditions of pulverized coal scouring and temperature fluctuations.

[0085] The upper end cover 251 of the collection bottle 25 of the secondary separator 2 is connected to the tapered section 24 of the secondary separator 2 by welding to form a sealed transition structure to prevent the leakage or escape of the pulverized coal-containing gas. A perforation is provided at the central position of the upper end cover 251, and the diameter of the perforation is the same as the inner diameter of the lower end of the tapered section 24 of the secondary separator 2 to ensure that the separated and falling pulverized coal can smoothly enter the interior of the collection bottle.

[0086] To achieve the convenient disassembly and cleaning of the collection bottle, internal threads are machined on the inner wall of the upper end cover 251 of the collection bottle 25 of the secondary separator 2, and external threads 29 that match them are provided on the outer surface of the upper end of the bottle body 252. The cooperation of the internal threads and the external threads 29 forms a detachable connection structure, and the operator can complete the disassembly and assembly operations of the collection bottle by rotating the bottle body 252.

[0087] This threaded connection structure not only improves the assembly flexibility of the equipment, but also facilitates the periodic cleaning of the pulverized coal inside the collection bottle 25 of the secondary separator 2, improving the overall working efficiency.

[0088] In one embodiment, to ensure a good sealing effect at the threaded connection, an O-ring or a sealing gasket is provided at the threaded interface to prevent the leakage of pulverized coal particles or gas.

[0089] In one embodiment, the inner diameters of the second intake pipe 21 and the first exhaust pipe 16 are the same.

[0090] Specifically, the intake pipe 21 provided at the inlet of the secondary separator 2 is used to receive the airflow discharged from the primary separator 1. To ensure the smooth transfer of the airflow between the primary separator 1 and the secondary separator 2, the inner diameter of the intake pipe 21 of the secondary separator 2 is designed to be the same as the inner diameter of the exhaust pipe 16 of the primary separator 1. The above design can avoid local airflow contraction or expansion caused by changes in pipe diameter, ensuring a smooth transition of the airflow between the two-stage separators; secondly, the connection with the same inner diameter helps to maintain the stability of the airflow velocity, avoiding the deposition or swirling accumulation of pulverized coal at the connection due to sudden changes in velocity, reducing the risk of pipeline blockage and extending the service life of the equipment; thirdly, keeping the inner diameter the same facilitates the standardized design of the structure, enabling the intake pipe 21 of the secondary separator 2 and the exhaust pipe 16 of the primary separator 1 to be assembled and connected using standard parts (such as union joints, threaded interfaces, etc.), improving the versatility and interchangeability of the components and facilitating later maintenance and replacement. Through the above design, the airflow is more stable during the secondary separation of the cyclone separator, thus achieving a more efficient pulverized coal separation effect.

[0091] The present application provides a cyclone separator that is convenient for disassembly and cleaning, comprising: a primary separator and a secondary separator; the primary separator includes a first intake pipe, a first conical pipe, a first straight cylinder section, a first tapered section, a first collection bottle, and a first exhaust pipe; the secondary separator includes a second intake pipe, a second conical pipe, a second straight cylinder section, a second tapered section, a second collection bottle, and a second exhaust pipe; a first quick coupling is provided at the pipe orifice of the first exhaust pipe, and a first external thread is provided at the pipe orifice of the second intake pipe; the first quick coupling is matched with the first external thread to form a detachable sealed connection between the primary separator and the secondary separator; the pulverized coal-containing gas stream sequentially passes through the primary separator and the secondary separator for two-stage separation, and the exhausted gas after separation is discharged from the second exhaust pipe. The cyclone separator that is convenient for disassembly and cleaning provided by the present application realizes the quick disassembly and assembly between components, reduces the complexity of operation and time cost, is convenient for cleaning the accumulated pulverized coal inside, helps to maintain the good working state of the cyclone separator, improves the separation effect and the accuracy and reliability of pulverized coal sampling, and reduces the sampling error caused by the blockage of the cyclone separator.

[0092] In the description of the present specification, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0093] The description with reference to terms such as "an embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present application, and the order of steps is not limited and can be adjusted appropriately as needed.

[0094] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood through specific circumstances.

[0095] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above are only specific embodiments of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A cyclone separator that is convenient for disassembly and cleaning, characterized in that, Comprising: A primary separator and a secondary separator; The primary separator includes a first inlet pipe, a first conical pipe, a first straight section, a first tapered section, a first collection bottle and a first exhaust pipe; The secondary separator includes a second inlet pipe, a second conical pipe, a second straight section, a second tapered section, a second collection bottle and a second exhaust pipe; A first quick coupling is provided at the nozzle of the first exhaust pipe, and a first external thread is provided at the nozzle of the second inlet pipe; the first quick coupling is matched with the first external thread to form a detachable sealed connection between the primary separator and the secondary separator; The powder-containing air flow sequentially passes through the primary separator and the secondary separator for two-stage separation, and the exhausted gas after separation is discharged from the second exhaust pipe.

2. The cyclone separator according to claim 1, which is easy to disassemble and clean, is characterized in that, A second quick coupling is provided at the nozzle of the first inlet pipe and is connected to the external thread at the tail of the sampling pipe, and the powder-containing air flow enters the first inlet pipe from the sampling pipe.

3. The cyclone separator according to claim 1, which is convenient for disassembly and cleaning, is characterized in that, The first exhaust pipe and the second exhaust pipe are L-shaped hollow equal-diameter pipes with 90° arc elbows.

4. The cyclone separator according to claim 1, which is easy to disassemble and clean, is characterized in that, The first conical pipe is fixed to both the first inlet pipe and the first straight section by welding; an end cover with a first through hole in the center is provided at the upper end of the first straight section, and the first exhaust pipe is connected to the first straight section through the first through hole; The powder-containing air flow tangentially enters the first conical pipe from the first inlet pipe to form a rotating air flow, and continuously rotates through the first straight section; the gas after the first separation is discharged from the first exhaust pipe.

5. The cyclone separator according to claim 4, characterized in that, The second conical pipe is fixed to both the second inlet pipe and the second straight section by welding; an end cover with a second through hole in the center is provided at the upper end of the second straight section, and the second exhaust pipe is connected to the second straight section through the second through hole; The gas after the first separation tangentially enters the second conical pipe from the second inlet pipe to form a rotating air flow, and continuously rotates through the second straight section, and the exhausted gas after the second separation is discharged from the second exhaust pipe.

6. The cyclone separator according to claim 1, characterized in that, A second external thread is provided at the upper end of the first tapered section, and a first internal thread is provided at the lower end of the first straight section; the second external thread is matched with the first internal thread to form a detachable connection.

7. The cyclone separator according to claim 1, which is convenient for disassembly and cleaning, is characterized in that, A third external thread is provided at the upper end of the second tapered section, and a second internal thread is provided at the lower end of the second straight section; the third external thread is matched with the second internal thread to form a detachable connection.

8. The cyclone separator according to claim 1, which is convenient for disassembly and cleaning, is characterized in that, The first collection bottle includes a first upper end cover, a first bottle body and a first lower end cover; the first bottle body is fixed to the first lower end cover by welding; The diameter of the middle hole of the first upper end cover is the same as the inner diameter of the lower end of the first tapered section, and the first upper end cover is fixed to the first tapered section by welding; A third internal thread is provided inside the first upper end cover, and a fourth external thread is provided at the upper end of the first bottle body; the fourth external thread is matched with the third internal thread to form a detachable connection.

9. The cyclone separator according to claim 1, which is convenient for disassembly and cleaning, is characterized in that, The second collection bottle includes a second upper end cover, a second bottle body and a second lower end cover; the second bottle body is fixed to the second lower end cover by welding; The diameter of the middle hole of the second upper end cover is the same as the inner diameter of the lower end of the second tapered section, and the second upper end cover is fixed to the second tapered section by welding; The second upper end cover is provided with a fifth internal thread, and the upper end of the second bottle body is provided with a sixth external thread; the sixth external thread is matched with the fifth internal thread to form a detachable connection.

10. The cyclone separator according to claim 1, which is convenient for disassembly and cleaning, is characterized in that, The inner diameters of the second intake pipe and the first exhaust pipe are the same.

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