Device for cleaning particulate matters in cavity

Abstract

The invention belongs to the technical field of boiler slag dryers, and particularly relates to an intra-cavity particulate matter cleaning device which comprises a body mechanism, a furnace body and a conveying chain arranged on the furnace body. The gas extraction mechanism is arranged on the furnace body and comprises a first differential pressure assembly, a Venturi tube, a second differential pressure assembly and a third differential pressure assembly, the separation and collection mechanism is arranged on the furnace body and comprises a gas inlet assembly and a particle separation assembly, the separation and collection mechanism is used for collecting slag flying dust in the furnace body, and the particle separation assembly is used for separating particles in the furnace body according to the gas dynamics principle. The high-speed flowing fluid can generate suction force, and the two effects interact to enable the high-speed flowing air to generate negative pressure, so that the negative pressure can be formed in the negative pressure cavity by utilizing the high-speed flowing air, and the collection efficiency of the cyclone separation tank can be enhanced by comprehensively utilizing energy superposition of air flows on the two sides; and slag dust suspended in the slag drying machine can be effectively collected and sampled.

Description

Technical Field

[0001] The invention belongs to the technical field of boiler slag dryers, and in particular relates to a device for collecting and extracting dust samples and an air volume metering device that fully utilizes cooling wind energy of a slag dryer. Background Art

[0002] In thermal power plants, the dry slag machine uses the negative pressure of the furnace to take the inhaled air as cooling air. Many power plants only have simple air inlet doors, and there is no way to know how much air is inlet to the dry slag machine. If too much air is inhaled and leaks, the temperature level in the furnace will drop, and the carbon content of the fly ash at the furnace outlet will increase, which will affect the combustion efficiency and thermal efficiency of the boiler. With the increase of the air leakage rate, the air leakage at the bottom of the furnace increases the oxygen level in the furnace, resulting in incomplete combustion in the furnace, and then increases the emission concentration of NOx at the furnace outlet. Dry slag leakage will have an adverse effect on the low-load operation performance of the boiler. Although the flue gas temperature, coal powder burnout rate, and NOx volume fraction of the furnace outlet in the burner area have been improved by the dry slag cooling method, when a large amount of dry slag cooling air leaks in, the overall temperature level in the furnace is still significantly reduced, especially the stable combustion ability of the middle and lower burner layers. When a large amount of dry slag cooling air leaks in, it may cause the total energy consumption of the system to increase. At the same time, the net flue gas fan and the heating surface in the furnace may be worn due to air leakage, which will have an adverse effect. However, if no air enters the slag dryer, the scrapers and chains of the slag dryer will be deformed or even broken due to long-term high temperature, which will bring great challenges to long-term stable operation. At the same time, the wind direction inside the slag dryer is unclear and the environment is dry, so most of the slag is in powder form, and a considerable part of it is suspended in the air. Due to the negative pressure inside the slag dryer, the airflow generated by the negative pressure will be brought back into the slag dryer before it can be taken out using conventional containers. The most critical thing is that the rotating chains and scrapers inside the slag dryer are extremely dangerous when opened to take out the slag, and it is difficult to obtain slag samples from the inside by conventional means. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above-mentioned existing dry slag machine internal rotating chain and scraper, the slag after opening and its danger, and the conventional means are difficult to obtain slag samples from the inside, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a device for cleaning particles in a cavity.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a main body mechanism, a furnace body and a transmission chain arranged on the furnace body; an exhaust mechanism, arranged on the furnace body, including a first differential pressure component, a venturi tube, a second differential pressure component and a third differential pressure component, the first differential pressure component and the second differential pressure component are both connected to the side wall of the venturi tube, the third differential pressure component is connected to the end of the venturi tube, the exhaust mechanism cools the transmission chain through the negative pressure inside the furnace body and the pressure difference outside the furnace body, and at the same time inhales gas through the venturi tube through the pressure difference between the inside and outside of the furnace body; a separation and collection mechanism, arranged on the furnace body, including an air intake component and a particle separation component, the separation and collection mechanism is used to collect slag fly ash in the furnace body.

[0007] As a preferred solution of the intracavity particle cleaning device described in the present invention, wherein: the first differential pressure component includes a differential pressure transmitter, an air inlet and a positive pressure differential pressure tube, the air inlet is located on the outside of the furnace body, the air inlet is integrally connected to the throat of the venturi tube, a first pressure transmission hole is opened on the side of the air inlet, the first pressure transmission hole is used to connect the positive pressure differential pressure tube and the positive pressure side of the differential pressure transmitter; the positive pressure differential pressure tube is arranged on the side of the air inlet, and is connected to the pressure transmission hole of the air inlet.

[0008] As a preferred solution of the intracavity particle cleaning device described in the present invention, the second differential pressure assembly includes a negative pressure differential pressure tube, a nozzle inlet and a nozzle outlet, and the throat of the venturi tube is connected to the negative pressure side of the differential pressure transmitter through the negative pressure differential pressure tube.

[0009] As a preferred solution of the intracavity particle cleaning device described in the present invention, the front and rear of the venturi tube throat are respectively connected integrally with the air inlet and the nozzle inlet, a second pressure transmission hole is opened on the side and is connected to the negative pressure side of the differential pressure transmitter through a negative pressure differential pressure tube.

[0010] As a preferred solution of the intracavity particle cleaning device of the present invention, the nozzle inlet and the nozzle outlet are respectively arranged at two ends of the venturi tube and are integrated with the venturi tube.

[0011] As a preferred solution of the intra-cavity particle cleaning device described in the present invention, the third differential pressure component includes a negative pressure chamber, a negative pressure tube and a cooling air nozzle, the negative pressure chamber is the cavity of the outer circle of the nozzle inlet and the nozzle outlet, the side opening of the negative pressure chamber is connected to the negative pressure tube, the cooling air nozzle is arranged at the end of the exhaust mechanism, and the cooling air nozzle is used to guide the airflow ejected from the nozzle outlet to the transmission chain.

[0012] As a preferred solution of the intracavity particle cleaning device described in the present invention, the air intake assembly includes a separation air duct, a separation gas inlet and a separator gas outlet, the intersection of the end of the negative pressure tube away from the venturi tube is a negative pressure gathering point, and the negative pressure gathering point is connected to the separation gas outlet.

[0013] As a preferred solution of the intracavity particle cleaning device described in the present invention, the separation gas inlet is the port of the separation air duct located in the ash hopper, and the separator gas outlet is located at the end of the separation air duct away from the ash hopper and is connected to the negative pressure collection point.

[0014] As a preferred solution of the intracavity particle cleaning device described in the present invention, wherein: the particle separation component includes a spiral ash inlet, an ash collecting hopper, an ash guide pipe, a spiral interface and an ash storage tank, the central axis of the spiral ash inlet is the same as the central axis of the outer circle of the separation air guide pipe, the two ends of the ash collecting hopper are respectively connected to the spiral ash inlet and the ash guide pipe, and the ash guide pipe is connected to the ash storage tank through a spiral interface.

[0015] As a preferred solution of the intracavity particle cleaning device of the present invention, one end of the ash guide pipe is connected to the end of the ash collecting hopper, and the other end of the ash guide pipe passes through the furnace body and is connected to the ash storage tank.

[0016] Beneficial effects of the present invention: The present invention utilizes the negative pressure of the furnace to inhale ambient air and blow directly to the transmission chains on both sides of the slag dryer for cooling. At the same time, because a high-speed flow is formed from the nozzle outlet to the cooling air nozzle, according to the principle of gas dynamics, the high-speed flowing fluid will generate suction. These two effects interact with each other, so that the high-speed flowing air can generate negative pressure. Therefore, by utilizing this high-speed flowing air, a negative pressure can be formed in the negative pressure chamber, thereby realizing the comprehensive utilization of the energy superposition of the airflows on both sides to enhance the efficiency of the cyclone separation tank collection, and can effectively collect and sample the slag dust suspended inside the slag dryer. Since the wind direction inside the slag dryer is uncertain and the density distribution in various directions around the fly ash cyclone separation tank is different, the conventional one-way fly ash cyclone separation tank has a low collection balance. Now, an air inlet with a 360-degree three-equal distribution is designed to meet the needs of simultaneous ash collection and mixing in multiple directions, and then the collected slag dust is dropped into the ash storage tank by using the ash guide pipe. When the ash storage tank is removed, due to the negative pressure characteristics inside the dry slag machine, the air flow is sucked back into the ash guide pipe, which can effectively blow away the residual ash inside the separation and collection mechanism to achieve the purpose of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a schematic diagram of the overall structure of the intracavity particle cleaning device of the present invention.

[0019] Figure 2 It is a cross-sectional view of the overall structure of the intracavity particle cleaning device of the present invention.

[0020] Figure 3 It is a partial enlarged view of the air extraction mechanism of the intracavity particle cleaning device of the present invention.

[0021] Figure 4 It is an enlarged view of the partial structure of the separation and collection mechanism of the intracavity particle cleaning device of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of the separation and collection mechanism of the intracavity particle cleaning device of the present invention.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the separation and collection mechanism of the intracavity particle cleaning device of the present invention and the internal gas flow direction.

[0024] In the figure: 100, main body; 101, furnace body; 102, transmission chain; 200, exhaust mechanism; 201, first differential pressure assembly; 201a, differential pressure transmitter; 201b, air inlet; 201c, positive pressure differential pressure pipe; 202, venturi tube; 203, second differential pressure assembly; 203a, negative pressure differential pressure pipe; 203b, nozzle inlet; 203c, nozzle outlet; 204, third differential pressure assembly; 204a, negative pressure chamber ; 204b, negative pressure pipe; 204b-1, negative pressure collection point; 204c, cooling air nozzle; 300, separation collection mechanism; 301, air intake assembly; 301a, separation air guide pipe; 301b, separation gas inlet; 301c, separator gas outlet; 302, particle separation assembly; 302a, spiral ash inlet; 302b, ash collecting hopper; 302c, ash guide pipe; 302d, spiral interface; 302e, ash storage tank. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1, reference Figure 1 to Figure 2 , which is the first embodiment of the present invention, provides a cavity particle cleaning device, including a main body mechanism 100, a furnace body 101 and a transmission chain 102 arranged on the furnace body 101;

[0030] The exhaust mechanism 200 is arranged on the furnace body 101, and includes a first differential pressure component 201, a venturi tube 202, a second differential pressure component 203 and a third differential pressure component 204. The first differential pressure component 201 and the second differential pressure component 203 are both connected to the side wall of the venturi tube 202, and the third differential pressure component 204 is connected to the end of the venturi tube 202. The exhaust mechanism 200 cools down the transmission chain 102 through the negative pressure inside the furnace body 101 and the pressure difference outside the furnace body 101, and at the same time, sucks in gas through the venturi tube 202 through the pressure difference between the inside and outside of the furnace body 101; it should be noted that the main purpose of the exhaust mechanism 200 is to use the negative pressure environment inside the dry slag machine to inhale ambient air to cool down the left and right transmission chains 102, and at the same time, use the combined effect of the above-mentioned structures to make the inhaled airflow produce negative pressure.

[0031] The separation and collection mechanism 300 is disposed on the furnace body 101 , and includes an air intake component 301 and a particle separation component 302 . The separation and collection mechanism 300 is used to collect slag flying dust in the furnace body 101 .

[0032] Specifically, the front and rear of the throat of the venturi tube 202 are integrally connected to the air inlet 201b and the nozzle inlet 203b respectively, and a second pressure transmission hole is opened on the side and connected to the negative pressure side of the differential pressure transmitter 201a through the negative pressure differential pressure pipe 203a.

[0033] Furthermore, the nozzle inlet 203b and the nozzle outlet 203c are respectively disposed at two ends of the venturi tube 202 and are integrated with the venturi tube 202.

[0034] Example 2, reference Figures 2 to 3 This embodiment is different from the first embodiment in that: the first differential pressure assembly 201 includes a differential pressure transmitter 201a, an air inlet 201b and a positive pressure differential pressure tube 201c, the air inlet 201b is located outside the furnace body 101, the air inlet 201b is integrally connected to the throat of the venturi tube 202, a first pressure transmission hole is opened on the side of the air inlet 201b, the first pressure transmission hole is used to connect the positive pressure differential pressure tube and the positive pressure side of the differential pressure transmitter 201a; the positive pressure differential pressure tube 201c is arranged on the side of the air inlet 201b, and is connected to the pressure transmission hole of the air inlet 201b. It is worth noting that the positive pressure differential pressure tube 201c is used to connect the air inlet 201b and the positive pressure side of the differential pressure transmitter 201a, and its function is to transfer the static pressure of the air inlet 201b to the positive pressure side of the differential pressure transmitter 201a.

[0035] Specifically, the second differential pressure assembly 203 includes a negative pressure differential pressure pipe 203a, a nozzle inlet 203b and a nozzle outlet 203c. The throat of the venturi tube 202 is connected to the negative pressure side of the differential pressure transmitter 201a through the negative pressure differential pressure pipe 203a. It should be noted that the nozzle inlet 203b is an integrated design of both the nozzle inlet 203b and the outlet of the venturi tube 202, and is also an integrated design with the nozzle outlet 203c. Its inner diameter gradually decreases from large to small until it reaches the nozzle outlet 203c, and the airflow flows from here to the nozzle outlet 203c.

[0036] It should also be noted that the nozzle outlet 203c and the nozzle inlet 203b are of an integrated design, and the air flow is sprayed from here to the cooling air nozzle 204c. A high-speed air flow is generated in the channel between the cooling air nozzles 204c, driving the air in the negative pressure chamber 204a to flow to the cooling air nozzle 204c, so that a negative pressure area is formed in the negative pressure chamber 204a.

[0037] Furthermore, the third differential pressure assembly 204 includes a negative pressure chamber 204a, a negative pressure pipe 204b and a cooling air nozzle 204c. The negative pressure chamber 204a is a chamber of the outer ring of the nozzle inlet 203b and the nozzle outlet 203c. The side opening of the negative pressure chamber 204a is connected to the negative pressure pipe 204b. The cooling air nozzle 204c is arranged at the end of the air extraction mechanism 200. The cooling air nozzle 204c is used to guide the airflow ejected from the nozzle outlet 203c to the transmission chain 102, so as to cool down the transmission chain 102.

[0038] It should be noted that the negative pressure chamber 204a is a cavity in the outer circle of the nozzle inlet 203b and the nozzle outlet 203c, and its side opening is connected to the negative pressure tube 204b. The high-speed airflow generated in the channel between the cooling air nozzles 204c drives the air in the negative pressure chamber 204a to flow to the cooling air nozzles 204c, and the negative pressure generated in the negative pressure chamber 204a sucks out the air in the negative pressure tube 204b as written in the instruction manual.

[0039] The negative pressure tube 204b is connected to the negative pressure chamber 204a through a side opening on the outer wall of the negative pressure chamber 204a and communicates with it. It is then connected to the negative pressure tube 204b on the other side to form a negative pressure gathering point 204b-1, which is connected to the separator gas outlet 301c and is used to extract the gas in the separation and collection mechanism 300 into the negative pressure chamber 204a.

[0040] The negative pressure gathering point 204b-1, where the ends of the negative pressure pipes 204b of the vacuum mechanisms 200 on both sides are gathered and connected to the separator gas outlet 301c of the separation air guide pipe 301a, serves to simultaneously utilize the negative pressure generated by the same structure on both sides for superposition to increase the suction force on the separation collection mechanism 300.

[0041] The rest of the structure is the same as that of Example 1.

[0042] Example 3, reference Figures 2 to 6 This embodiment is different from the above embodiments in that: the air intake component 301 includes a separation air duct 301a, a separation gas inlet 301b and a separator gas outlet 301c, and the intersection of the end of the negative pressure pipe 204b away from the venturi tube 202 is a negative pressure gathering point 204b-1, and the negative pressure gathering point 204b-1 is connected to the separation gas outlet. The purpose of this arrangement is to extract the gas in the particle separation component 302 into the negative pressure chamber 204a.

[0043] It should be noted that the separation air duct 301a includes a separation gas inlet 301b and a separator gas outlet 301c, and the separator gas outlet 301c is connected to the negative pressure collection point 204b-1. Its main body and the cyclone separation tank are designed as concentric circles, and the middle section is welded and fixed at the center of the spiral ash inlet 302a. The main purpose is to guide the gas in the separation and collection mechanism 300 to a negative pressure state, so that the spiral ash inlet 302a can be used to suck in the slag flying dust inside the dry slag machine.

[0044] Specifically, the separation gas inlet 301b is the port of the separation air duct 301a located in the ash hopper 302b, so that the air after separation of the fly ash in the particle separation component 302 is led out from the separation gas inlet 301b through spiral motion, and the separator gas outlet 301c is located at one end of the separation air duct 301a away from the ash hopper 302b and is connected to the negative pressure collection point 204b-1.

[0045] Furthermore, the particle separation component 302 includes a spiral ash inlet 302a, an ash collecting hopper 302b, an ash guide pipe 302c, a spiral interface 302d and an ash storage tank 302e. The central axis of the spiral ash inlet 302a is the same as the central axis of the outer circle of the separation air guide pipe 301a. The two ends of the ash collecting hopper 302b are respectively connected to the spiral ash inlet 302a and the ash guide pipe 302c. The ash guide pipe 302c is connected to the ash storage tank 302e through the spiral interface 302d. The ash storage tank 302e is used to collect ash samples, can be reused, and is easy to disassemble and assemble.

[0046] It should be noted that the separation air guide pipe 301a, the spiral ash inlet 302a, the ash collecting hopper 302b and the ash guide pipe 302c together constitute a fly ash cyclone tank.

[0047] It should also be noted that since there is no fixed wind direction in the dry slag machine, and the dust is basically some freely flying dust, a conventional single-hole ash inlet can be used. At the same time, the single-hole ash inlet can be changed to a 360-degree 3-equally divided ash inlet hole, and the total cross-sectional area of ​​the ash inlet is slightly equal to the original single ash inlet to ensure the speed of the vortex after entering the tank body. The advantage of such a setting is that the rotating slag dust can rotate at high speed, and the centrifugal force makes the dust rotate in the outer circle. Most of the low-density air remains in the center and is then discharged from the separation gas inlet 301b. The outer circle of dust continues to rotate downward under the action of gravity and falls into the ash collecting hopper 302b, ensuring the separation effect of air and slag dust.

[0048] It should also be noted that most of the dust from the rotating and falling slag is distributed in the outer circle. Since most of the separated air is discharged from the separation gas inlet 301b, the remaining dust falls into the ash guide pipe 302c under the guidance of the ash collecting hopper 302b.

[0049] Furthermore, one end of the ash guide pipe 302c is connected to the end of the ash collecting hopper 302b, and the other end of the ash guide pipe 302c passes through the furnace body 101 and is connected to the ash storage tank 302e. The function of the ash guide pipe 302c is to guide the slag fly ash in the ash collecting hopper 302b to the ash storage tank 302e for ash collection.

[0050] The rest of the structure is the same as that of Example 2.

[0051] Operation process: In the present invention, the furnace body 101 is divided into left and right sides with the same design by the central axis, and the left and right sides are operated simultaneously. Finally, the separation air guide pipe 301a is connected simultaneously at the gathering point of the left and right negative pressure pipes 204b, and the negative pressure suction force is superimposed together to work on the separation collection mechanism 300. The following only introduces the single-side operation steps, and the other side is the same and will not be repeated.

[0052] First, in the air extraction mechanism 200, when the air flow is sucked in, it flows through the air inlet 201b → the throat of the venturi tube 202 → the nozzle inlet 203b → the nozzle outlet 203c in sequence. According to Bernoulli's principle:

[0053] A positive pressure differential pressure tube 201c and a negative pressure differential pressure tube 203a are respectively provided at the air inlet 201b of the venturi tube 202 and the throat of the venturi tube 202, and then the positive pressure differential pressure tube 201c and the negative pressure differential pressure tube 203a are respectively connected to the positive and negative pressure sides of the differential pressure transmitter 201a. Based on the characteristics of the venturi tube 202, the differential pressure transmitter 201a displays real-time air volume data at this time.

[0054] The diameter of the nozzle inlet 203b is the same as that of the end of the venturi tube 202, and then the diameter gradually decreases toward the nozzle outlet 203c. When the air flow is ejected from here to the cooling air nozzle 204c, the air flow drives the air in the negative pressure chamber 204a to flow to the cooling air nozzle 204c, and then blows from the cooling air nozzle 204c to the transmission chain 102 to cool the transmission chain 102.

[0055] At the same time, the negative pressure airflow in the separation collection mechanism 300 carries dust from the spiral ash inlet 302a → inside the fly ash cyclone separation tank → separation gas inlet 301b → separation air guide pipe 301a → separator gas outlet 301c → negative pressure gathering point 204b-1 → negative pressure pipe 204b → negative pressure chamber 204a → nozzle outlet 203c:

[0056] The air in the negative pressure chamber 204a has flowed to the cooling air nozzle 204c, and the decibel extraction passes through the left and right negative pressure tubes 204b to form a convergence point of the left and right negative pressure tubes 204b at the separation air guide tube 301a, and at the same time, the negative pressure state of the separation air guide tube 301a is superimposed, so that the negative pressure state inside the separation collection mechanism 300 is stronger.

[0057] Reference Figure 5 and Figure 6 At this time, the separation and collection mechanism 300 tank body must have gas to enter and replenish it. The gas inside the dry slag machine can only be supplied from the spiral ash inlet 302a. At this time, the airflow entering the separation and collection mechanism 300 tank body carries a certain amount of slag dust. Due to the improvement of the structure of the spiral ash inlet 302a, the balance of the slag dust entering the separation and collection mechanism 300 tank body is further enhanced.

[0058] When the slag dust enters from the spiral ash inlet 302a and rotates inside, the centrifugal force of the material with high density acts on the outer circle to rotate, and the air with low density gathers at the center to rotate, and then the air in the middle is sucked into the separation gas inlet 301b. The slag dust rotating in the outer circle falls into the ash guide pipe 302c along the ash collecting hopper 302b due to gravity, and finally falls into the ash storage tank 302e for storage.

[0059] When the ash storage tank 302e is removed, the negative pressure inside the dry slag machine will suck in external air from the spiral interface 302d, pass through the ash guide pipe 302c, the ash collecting hopper 302b, and finally flow into the dry slag machine from the spiral ash inlet 302a. During the process of air inflow, the dust on the internal wall is blown back into the dry slag machine to achieve the purpose of cleaning.

[0060] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0061] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0062] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for cleaning particles in a cavity, characterized in that: include, A main body mechanism (100), a furnace body (101) and a transmission chain (102) arranged on the furnace body (101); An air extraction mechanism (200) is arranged on the furnace body (101), and comprises a first differential pressure assembly (201), a venturi tube (202), a second differential pressure assembly (203) and a third differential pressure assembly (204); the first differential pressure assembly (201) and the second differential pressure assembly (203) are both connected to the side wall of the venturi tube (202); the third differential pressure assembly (204) is connected to the end of the venturi tube (202); the air extraction mechanism (200) cools down the transmission chain (102) through the negative pressure inside the furnace body (101) and the pressure difference outside the furnace body (101); and at the same time, gas is sucked in through the venturi tube (202) through the pressure difference between the inside and outside of the furnace body (101); The separation and collection mechanism (300) is arranged on the furnace body (101), and comprises an air intake component (301) and a particle separation component (302). The separation and collection mechanism (300) is used to collect slag flying dust in the furnace body (101).

2. The cavity particle cleaning device according to claim 1, characterized in that: The first differential pressure assembly (201) comprises a differential pressure transmitter (201a), an air inlet (201b) and a positive pressure differential pressure tube (201c); the air inlet (201b) is located outside the furnace body (101); the air inlet (201b) is integrally connected to the throat of the venturi tube (202); a first pressure transmission hole is provided on the side of the air inlet (201b); the first pressure transmission hole is used to connect the positive pressure differential pressure tube and the positive pressure side of the differential pressure transmitter (201a); The positive pressure differential pipe (201c) is arranged on the side of the air inlet (201b) and is connected to the pressure transmission hole of the air inlet (201b).

3. The cavity particle cleaning device according to claim 2, characterized in that: The second differential pressure assembly (203) comprises a negative pressure differential pressure tube (203a), a nozzle inlet (203b) and a nozzle outlet (203c), and the throat of the venturi tube (202) is connected to the negative pressure side of the differential pressure transmitter (201a) via the negative pressure differential pressure tube (203a).

4. The cavity particle cleaning device according to claim 3, characterized in that: The front and rear throat of the venturi tube (202) are integrally connected to the air inlet (201b) and the nozzle inlet (203b), respectively, and a second pressure transmission hole is opened on the side and is connected to the negative pressure side of the differential pressure transmitter (201a) through the negative pressure differential pressure tube (203a).

5. The cavity particle cleaning device according to claim 4, characterized in that: The nozzle inlet (203b) and the nozzle outlet (203c) are respectively arranged at two ends of the Venturi tube (202) and are designed to be integrated with the Venturi tube (202).

6. The cavity particle cleaning device according to claim 5, characterized in that: The third differential pressure component (204) includes a negative pressure chamber (204a), a negative pressure tube (204b) and a cooling air nozzle (204c); the negative pressure chamber (204a) is a cavity of the outer circle of the nozzle inlet (203b) and the nozzle outlet (203c); the side opening of the negative pressure chamber (204a) is connected to the negative pressure tube (204b); the cooling air nozzle (204c) is arranged at the end of the exhaust mechanism (200); the cooling air nozzle (204c) is used to guide the airflow ejected from the nozzle outlet (203c) to the transmission chain (102), so as to cool down the transmission chain (102).

7. The intracavity particle cleaning device according to claim 6, characterized in that: The air intake component (301) comprises a separation air guide pipe (301a), a separation gas inlet (301b) and a separator gas outlet (301c); the intersection of the end of the negative pressure pipe (204b) away from the venturi tube (202) is a negative pressure collection point (204b-1); the negative pressure collection point (204b-1) is connected to the separation gas outlet; the purpose of such arrangement is to extract the gas in the particle separation component (302) into the negative pressure chamber (204a).

8. The intracavity particle cleaning device according to claim 7, characterized in that: The separation gas inlet (301b) is a port of the separation air duct (301a) located in the ash hopper (302b), so that the air after separation of the fly ash in the particle separation component (302) is led out from the separation gas inlet (301b) through spiral motion, and the separator gas outlet (301c) is located at one end of the separation air duct (301a) away from the ash hopper (302b) and is connected to the negative pressure collection point (204b-1).

9. The intracavity particle cleaning device according to claim 8, characterized in that: The particle separation component (302) comprises a spiral ash inlet (302a), an ash collecting hopper (302b), an ash guide pipe (302c), a spiral interface (302d) and an ash storage tank (302e). The central axis of the spiral ash inlet (302a) is the same as the central axis of the outer circle of the separation air guide pipe (301a). The two ends of the ash collecting hopper (302b) are respectively connected to the spiral ash inlet (302a) and the ash guide pipe (302c). The ash guide pipe (302c) is connected to the ash storage tank (302e) via a spiral interface (302d). The ash storage tank (302e) is used to collect ash samples.

10. The intracavity particle cleaning device according to claim 9, characterized in that: One end of the ash guide pipe (302c) is connected to the end of the ash collecting hopper (302b), and the other end of the ash guide pipe (302c) passes through the furnace body (101) and is connected to the ash storage tank (302e). The function of the ash guide pipe (302c) is to guide the slag fly ash in the ash collecting hopper (302b) to the ash storage tank (302e) for slag collection.

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