A concentration adjustment mechanism, a fine powder separator, and a powder enrichment and feeding system

Abstract

The present invention discloses a concentration adjustment mechanism, a fine powder separator and a powder enrichment and feeding system, including a channel component, which includes an inlet channel and a discharge channel connected to the inlet channel; a supplementary channel, which includes a switch cabin, a first connection section connecting the switch cabin and the inlet channel, and a second connection section connecting the switch cabin and the discharge channel; and a switch component, which includes a switch valve core arranged inside the switch cabin and capable of adjusting the switch state of the supplementary channel, and a switch rotating shaft connected to the switch valve core. The dust raw material enters the inside of the main separator from the discharge channel. The structure inside the main separator performs dust removal and screening on the dust raw material, and the processed raw material reaches the raw material use station through the discharge channel. When the raw material discharged by the main separator cannot meet the demand of the raw material use station, the supplementary channel can be opened so that more raw materials enter the inside of the discharge channel to meet the demand of the raw material use station.

Description

Technical Field

[0001] The present invention relates to the technical field of powder feeding systems, and particularly to a concentration adjustment mechanism, a fine powder separator, and a concentrated powder feeding system. Background Art

[0002] In a generating unit using an intermediate storage pulverized coal system in a power plant, the raw coal is ground to be qualified by the pulverizing system and stored in a coal powder bin, and is fed to the boiler according to the unit load through a coal feeder. The intermediate storage pulverized coal system includes a powder feeding system.

[0003] At the present stage, since the calorific value of the actual coal type burned by the boiler is much lower than the designed coal type and the checked coal type of the boiler, the coal feeder operates beyond its rated capacity at high unit loads. When the rotational speed of the coal feeder is too high and it deviates from the stable working area, the pulverized coal cannot fall smoothly by its own gravity, resulting in a decrease in the powder output, insufficient fuel supply to the boiler, and large fluctuations, which affect the load-carrying capacity of the unit. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problem of reduced powder output in the existing powder feeding system, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a concentration adjustment mechanism.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: including a channel component, which includes an inlet channel and a discharge channel connected to the inlet channel; a supplementary channel, which includes a switch cabin, a first connecting section connecting the switch cabin and the inlet channel, and a second connecting section connecting the switch cabin and the discharge channel; and a switch component, which includes a switch valve core disposed inside the switch cabin and capable of adjusting the switch state of the supplementary channel, and a switch rotating shaft connected to the switch valve core.

[0008] As a preferred solution of the concentration adjustment mechanism of the present invention, wherein: the discharge channel includes an outlet section, an extension section connected to the outlet section, and a summary section connecting the extension section and the second connecting section at the same time;

[0009] It further includes an interleaving and stabilizing mechanism, which includes a stabilizing housing fixed to the channel component and an intersecting valve assembly disposed inside the stabilizing housing.

[0010] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: a transverse through chamber is formed inside the stable housing, and a valve core chamber is formed on the side wall of the transverse through chamber;

[0011] Among them, the stable housing has an inlet end connected to the second communication section and an outlet end connected to the aggregation section.

[0012] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: the cross valve assembly includes a rotating core disposed inside the valve core chamber, on which a first through valve hole and a second through valve hole perpendicular to each other are formed; a cross core penetrating the rotating core and capable of rotating synchronously with the rotating core, which has a collection end connected to the second communication section, a through section penetrating the rotating core, and an expansion end communicating with the aggregation section.

[0013] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: an inlet hole is formed on the collection end, and the collection end can rotate synchronously with the switch rotating shaft.

[0014] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: it further includes an anti-cross-flow component, which includes a folding baffle group disposed inside the aggregation section; a pushing component capable of sliding as the cross core rotates; a transmission component disposed between the folding baffle group and the pushing component; wherein, when the pushing component slides, it can drive the folding baffle group to unfold / close through the transmission component.

[0015] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: the folding baffle group includes an inclined plate fixed inside the aggregation section and a rotating plate disposed on the inclined plate;

[0016] The rotating plate is connected to the transmission component. When the transmission component moves in the first direction, it can push the rotating plate to rotate and unfold. When the transmission component moves in the second direction, it can pull the rotating plate to rotate and close. When the rotating plate is in the closed state, it can disconnect the expansion end from the aggregation section.

[0017] As a preferred embodiment of the concentration adjustment mechanism of the present invention, the following is provided: The pushing component includes an elastic sliding member, which includes a fixed shaft -, a socket spring - sleeved inside the fixed shaft -, a connecting ring - slidably sleeved outside the fixed shaft -, an extension rod - provided on the connecting ring -, and a chuck - provided at the end of the extension rod -; It further includes a rotating pressing member, which is provided with a pressing inclined surface connected to the end face of the expansion part, a flat straight surface connected to the pressing inclined surface, and a card slot opened on the flat straight surface; The transmission component includes an extension column connected to the connecting ring -, a pushing support member provided at the end of the extension column, and a connecting column member fixed to the rotating plate and slidably connected to the support member.

[0018] The beneficial effect of this concentration adjustment mechanism is as follows: The powder raw material reaches the inside of the processing equipment through the inlet passage, is processed inside the processing equipment, and the processed powder raw material reaches the dust raw material usage station through the discharge passage. When the raw material processed by the processing equipment cannot supply the raw material usage amount of the raw material usage station, by rotating and opening the switch valve core, part of the raw material reaches the discharge passage through the first connection section and the second connection section, increasing the amount of dust raw material in the discharge passage to meet the required amount of raw material at the dust raw material usage station.

[0019] The present invention also proposes a fine powder separator, which includes the above-mentioned concentration adjustment mechanism and also includes a main separator; The discharge passage is provided at the top of the main separator, and the inlet passage communicates with the side wall of the main separator.

[0020] The beneficial effect of this fine powder separator is as follows: The dust raw material enters the inside of the main separator from the discharge passage, and the structure inside the main separator performs dust removal and screening on the dust raw material, and the processed raw material reaches the raw material usage station through the discharge passage. When the discharged raw material processed by the main separator cannot meet the demand of the raw material usage station, the supplementary passage can be opened to allow more raw material to enter the inside of the discharge passage to meet the demand of the raw material usage station.

[0021] The present invention also proposes a concentration-enhanced powder feeding system, which includes the above-mentioned fine powder separator and also includes; A coal mill for grinding coal; A coarse powder separator, which is connected to the coal mill and is connected to the fine powder separator through an inlet passage; A feeder, which is connected to the fine powder separator through the discharge passage and can transport pulverized coal to the furnace.

[0022] The beneficial effect of this concentration-enhanced powder feeding system is as follows: When the rotational speed of the feeder is too high and it deviates from the stable working area, it will cause the pulverized coal not to fall smoothly by its own gravity, resulting in a decrease in the powder output. At this time, the supplementary passage is opened to supplement coal raw material to the discharge passage, increasing the fuel amount in the furnace, avoiding uneven powder output caused by too high rotational speed of the feeder, and improving the load-carrying capacity of the unit. Description of the Drawings

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of the concentration adjustment mechanism of the present invention.

[0025] Figure 2 It is a schematic diagram of the internal structure of the concentration adjustment mechanism of the present invention.

[0026] Figure 3 It is a schematic diagram of the cross valve assembly structure of the concentration adjustment mechanism of the present invention.

[0027] Figure 4 It is a schematic diagram of the anti-cross-flow component structure of the concentration adjustment mechanism of the present invention.

[0028] Figure 5 It is a sectional view of the anti-cross-flow component structure of the concentration adjustment mechanism of the present invention.

[0029] Figure 6 For the concentration adjustment mechanism of the present invention Figure 4 The enlarged view at position A.

[0030] Figure 7 It is a schematic diagram of the overall structure of the fine powder separator of the present invention.

[0031] Figure 8 It is a schematic diagram of the structure of the powder enrichment and feeding system of the present invention. Specific Embodiments

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification.

[0033] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Second, the "one embodiment" or "embodiment" referred to herein means a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0035] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions of length, width, and depth should be included.

[0036] Embodiment 1

[0037] Referring to Figure 1 , a schematic structural diagram of a concentration adjustment mechanism is provided, as shown in Figure 1 , a concentration adjustment mechanism includes a channel component 100, which includes an inlet channel 101 and a discharge channel 102 connected to the inlet channel 101; a supplementary channel 200, which includes a switch cabin 201, a first connection section 202 connecting the switch cabin 201 and the inlet channel 101, and a second connection section 203 connecting the switch cabin 201 and the discharge channel 102; and a switch component 300, which includes a switch valve core 301 disposed inside the switch cabin 201 and capable of adjusting the switch state of the supplementary channel 200, and a switch rotating shaft 302 connected to the switch valve core 301.

[0038] Among them, both the inlet channel 101 and the discharge channel 102 are connected to the processing device. The inlet channel 101 is connected to the raw material supply station, and the discharge channel 102 is connected to the raw material usage station. In addition, the inner cavity of the switch cabin 201 is cylindrical, and the switch valve core 301 is also cylindrical. The switch valve core 301 is located in the inner cavity of the switch cabin 201, and its outer sidewall fits with the sidewall of the switch cabin 201. A through-hole cavity is provided on the switch valve core 301. When it corresponds to the first connection section 202 and the second connection section 203, the supplementary channel 200 is opened. When the through-hole cavity is misaligned with the first connection section 202 and the second connection section 203, the supplementary channel 200 is closed.

[0039] Operation process: The powder raw material reaches the inside of the processing device through the inlet channel 101 and is processed inside the processing device. The processed powder raw material reaches the dust raw material usage station through the discharge channel 102. When the raw material processed by the processing device cannot supply the raw material usage amount of the raw material usage station, the switch valve core 301 is rotated to open, so that part of the raw materials reach the discharge channel 102 through the first connection section and the second connection section, increasing the amount of dust raw material in the discharge channel 102 to meet the required amount of raw material at the dust raw material usage station.

[0040] Example 2

[0041] Reference Figure 2 , this embodiment is different from the first embodiment in that: the discharge channel 102 includes an outlet section 102a, an extension section 102b communicating with the outlet section 102a, and a summary section 102c communicating with both the extension section 102b and the second communication section 203; the processed dust discharged from the processing device reaches the extension section 102b through the outlet section 102a and reaches the summary section 102c through the extension section 102b; it further includes an interleaved stabilizing mechanism 400, which includes a stabilizing housing 401 fixed to the channel member 100 and a cross valve assembly 402 provided inside the stabilizing housing 401; by setting the cross valve assembly 402, the air flow discharged from the supplementary channel 200 and the air flow discharged from the dust raw material discharged from the discharge channel 102 can be arranged such that without direct cross-flow, the discharge channel 102 installed on the processing device can support the supplementary channel 200, reducing the jitter problem of the supplementary channel 200 when the air flow passes through the supplementary channel 200 and making the supplementary channel 200 more stable.

[0042] The stabilizing housing 401 has a transverse cavity 401a opened inside it, and a valve core cavity 401b is opened on the side wall of the transverse cavity 401a; wherein, the stabilizing housing 401 has an inlet end 401c connected to the second communication section 203 and an outlet end 401d connected to the summary section 102c. The stabilizing housing 401 is directly fixed between the outlet section 102a and the extension section 102b of the discharge channel 102, and corresponding holes are opened at its connection positions with the outlet section 102a and the extension section 102b. The transverse cavity 401a is cylindrical, and the valve core cavity 401b is also cylindrical, and the diameter of the valve core cavity 401b is larger than that of the transverse cavity 401a.

[0043] The cross valve assembly 402 includes a rotating core 402a provided inside the valve core cavity 401b, on which there are a first through valve hole 402a-1 and a second through valve hole 402a-2 that are perpendicular to each other; the rotating core 402a is also cylindrical. When it is located inside the valve core cavity 401b, it fits with the inner side wall of the valve core cavity 401b. Both the first through valve hole 402a-1 and the second through valve hole 402a-2 can communicate with the outlet section 102a and the extension section 102b, and the rotating core 402a can rotate inside the valve core cavity 401b.

[0044] The cross core 402b that penetrates the rotating core 402a and can rotate synchronously with the rotating core 402a has a collecting end 402b-1 connected to the second connecting section 203, a through section 402b-2 that penetrates the rotating core 402a, and an expansion end 402b-3 that is connected to the collecting section 102c. An entry hole K is provided on the collecting end 402b-1, and the collecting end 402b-1 can rotate synchronously with the switch shaft 302.

[0045] In this embodiment, the first end of the collecting end 402b-1 is in a closed state, and the first end is in contact with the inner wall of the transverse chamber 401a. The second end of the collecting end 402b-1 gradually reduces in diameter from the end close to the first end to the end far away from the first end. The through section 402b-2 passes through the intersection of the first through valve hole 402a-1 and the second through valve hole 402a-2, and its central part is a rectangular structure. The rectangular structure is provided with entry sieve holes 402b-2a on both sides of the first through valve hole 402a-1, and is completely closed on both sides of the second through valve hole 402a-2.

[0046] The switch shaft 302 can synchronously rotate the switch valve core 301 and the cross valve assembly 402. When the switch valve core 301 is rotated to make the supplementary channel 200 reach the open state, the position of the entrance hole K corresponds to the second connecting section 203. At this time, the dust material entering the inner side of the second connecting section 203 enters the inner side of the cross core 402b and reaches the collection section 102c through the cross core 402b. At this time, the two ends of the first through valve hole 402a-1 correspond to the outlet section 102a and the extension section 102b. The dust material processed by the processing equipment will reach the extension section 102b through the first through valve hole 402a-1. During the passing process, the processed dust raw materials can enter the inner side of the through section 402b-2 through the sieve hole 402b-2a, and be preliminarily mixed with the unprocessed raw materials on the inner side of the through section 402b-2. The airflow entering the sieve hole 402b-2a from one side can blow the unprocessed raw materials on the inner side of the through section 402b-2 away from the through section 402b-2 through the sieve hole 402b-2a on the other side, and mix with the raw materials on the inner side of the first through valve hole. The raw materials are mixed through the small sieve hole 402b-2a, thereby avoiding the problem of violent vibration caused by the intersection of two large-flow airflows.

[0047] In addition, when the switch valve core 301 rotates to make the supplementary channel 200 reach the closed state, the position of the entrance hole K is staggered with the second connecting section 203. At this time, the two ends of the second through valve hole 402a-2 correspond to the outlet section 102a and the extension section 102b, and the two sides opposite the second through valve hole 402a-2 are in a completely closed state, preventing a large amount of processed dust from entering the inner side of the through section 402b-2, causing the problem of reduced powder output from the aggregation section 102c.

[0048] The remaining structures are the same as those in Embodiment 1.

[0049] Operation process: By setting the cross valve assembly 402, the air flow discharged from the replenishment channel 200 and the air flow discharged from the dust raw material discharged from the discharge channel 102 can be prevented from directly cross-flowing. The discharge channel 102 installed on the processing device can support the replenishment channel 200, reducing the jitter problem of the replenishment channel 200 when the air flow passes through the replenishment channel 200, making the replenishment channel 200 more stable.

[0050] Embodiment 3

[0051] Refer to Figure 2 , the difference between this embodiment and the above embodiments is that it further includes an anti-cross-flow component 500, which includes a folding baffle group 501 provided inside the aggregation section 102c; a pushing component 502 that can slide as the cross core 402b rotates; a transmission component 503 provided between the folding baffle group 501 and the pushing component 502; wherein, when the pushing component 502 slides, it can drive the folding baffle group 501 to expand / close through the transmission component 503. When the switch valve core 301 rotates to make the replenishment channel 200 reach the open state, the pushing component 502 drives the transmission component 503 to move in the first direction. At this time, the folding baffle group 501 expands, so that the unprocessed dust raw material discharged from the expansion end 402b-3 can enter the aggregation section 102c. When the switch valve core 301 rotates to make the replenishment channel 200 reach the closed state, the transmission component 503 moves in the second direction. At this time, the folding baffle group 501 closes, which can prevent the dust entering the aggregation section 102c from the extension section 102b from entering the inside of the expansion end 402b-3, causing the problem of reduced powder discharge.

[0052] Specifically, the folding baffle group 501 includes an inclined plate 501a fixed inside the aggregation section 102c, and a rotating plate 501b provided on the inclined plate 501a; the rotating plate 501b is connected to the transmission component 503. When the transmission component 503 moves in the first direction, it can push the rotating plate 501b to rotate and expand. When the transmission component 503 moves in the second direction, it can pull the rotating plate 501b to rotate and close. When the rotating plate 501b is in the closed state, it can disconnect the expansion end 402b-3 from the aggregation section 102c.

[0053] In this embodiment, the included angle between the inclination angle of the inclined plate 501a and the extending direction of the aggregation section 102c is 45 degrees. At this time, when the rotating plate 501b is in the unfolded state, it is parallel to the extending direction of the aggregation section 102c, so that the air flow entering the aggregation section 102c from the extending section 102b flows parallel to the extending direction of the aggregation section 102c under the guidance of the inclined plate 501a and the rotating plate 501b, and is parallel to the air flow entering the aggregation section 102c from the expansion end 402b-3, avoiding the problem of pipeline jitter caused by the collision of the two air flows.

[0054] Further, the pushing component 502 includes an elastic sliding member 502a, which includes a fixed shaft 502a-1, a socket spring 502a-2 sleeved inside the fixed shaft 502a-1, a connection ring 502a-3 slidably sleeved outside the fixed shaft 502a-1, an extension rod 502a-4 provided on the connection ring 502a-3, and a chuck 502a-5 provided at the end of the extension rod 502a-4; it also includes a rotating pressing member 502b, which is provided with a pressing inclined surface M1 connected to the end face of the expansion part, a flat surface M2 connected to the pressing inclined surface M1, and a card slot M3 opened on the flat surface M2; the transmission component 503 includes an extension column 503a connected to the connection ring 502a-3, a pushing support member 503b provided at the end of the extension column 503a, and a connection column member 503c fixed on the rotating plate 501b and slidably connected to the support member.

[0055] When the switch rotating shaft 302 is rotated clockwise by 90 degrees, the supplementary channel 200 is adjusted from the closed state to the open state. When rotated counterclockwise by 90 degrees, the supplementary channel 200 is adjusted from the open state to the closed state. In this embodiment, when the switch rotating shaft 302 is rotated clockwise, the pressing inclined surface M1 on the rotating pressing member will contact the chuck 502a-5, pressing the chuck 502a-5 and at the same time pushing the connection ring 502a-3 to move in the first direction through the extension rod 502a-4. The connection ring 502a-3 drives the extension column 503a to move in the first direction. At this time, the socket spring 502a-2 deforms, causing the rotating plate 501b to rotate and open.

[0056] When the switch rotating shaft 302 is rotated clockwise, the elastic force of the socket spring 502a-2 pushes the connection ring 502a-3, causing the connection ring 502a-3 to drive the extension column 503a to move in the second direction, causing the rotating plate 501b to rotate and close.

[0057] When the rotating plate 501b rotates to an extended state parallel to the aggregation section 102c, the clamping head 502a-5 enters the inner side of the card slot M3. The clamping head 502a-5 has a disengagement arc surface 502a-5a and a resistance surface 502a-5b. The resistance surface 502a-5b can resist the card slot M3 to prevent the expansion end 402b-3 from continuing to rotate clockwise. When the expansion end 402b-3 rotates counterclockwise, it can resist the disengagement arc surface 502a-5a, so that the clamping head 502a-5 is disengaged from the inner side of the card slot M3.

[0058] In addition, a connecting groove 503b-1 is provided on the pushing support member 503b, and the connecting groove 503b-1 has an arc segment 503b-1a and a straight segment 503b-1b, and the arc segment 503b-1a has a low point end T1 and a high point end T2. When the rotating plate 501b is in a closed state, the connecting column 503c is located at the low point end T1. In the process of changing from the closed state to the open state, the pushing support member 503b moves in the first direction. At this time, the connecting column 503c moves along the arc segment 503b-1a from the low point end to the high point end T2, wherein the straight segment 503b -1b is parallel to the extension direction of the aggregation section 102c. When the high point end T2 enters the inner side of the straight section 503b-1b, the rotating plate 501b has reached a state parallel to the extension direction of the aggregation section 102c. Thereafter, the connecting column 503c slides a certain distance on the inner side of the straight section. When the clamping head 502a-5 enters the clamping slot M3, it will drive the connecting ring 502a-3 to move a certain distance in the first direction. The setting of the straight section 503b-1b can enable the pushing support member 503b to maintain the support rotating plate 501b in a state parallel to the extension direction of the aggregation section 102c.

[0059] The rest of the structure is the same as that of Example 2.

[0060] Operation process: When the switch valve core 301 rotates to make the supplementary channel 200 reach the open state, the pushing component 502 drives the transmission component 503 to move in the first direction. At this time, the folding baffle group 501 is unfolded, so that the unprocessed dust raw materials discharged from the expansion end 402b-3 can enter the aggregation section 102c. When the switch valve core 301 rotates to make the supplementary channel 200 reach the closed state, the transmission component 503 moves in the second direction. At this time, the folding baffle group 501 is closed, which can prevent the dust from entering the aggregation section 102c from the extension section 102b and entering the inner side of the expansion end 402b-3, causing the problem of reduced powder output.

[0061] Example 4

[0062] Reference Figure 2, what is different about this embodiment from the above embodiments is that a fine powder separator is also proposed, which includes the concentration adjustment mechanism in the above embodiments and also includes a main separator 1000; a discharge channel 102 is provided at the top of the main separator 1000, and an inlet channel 101 communicates with the side wall of the main separator 1000.

[0063] The rest of the structure is the same as that of Embodiment 3.

[0064] Operation process: The dust raw material enters the inside of the main separator 1000 from the discharge channel 102. The structure inside the main separator 1000 performs dust removal screening on the dust raw material, and the processed raw material reaches the raw material usage station through the discharge channel 102. When the discharged raw material processed by the main separator 1000 cannot meet the demand of the raw material usage station, the supplementary channel 200 can be opened to allow more raw materials to enter the inside of the discharge channel 102 to meet the demand of the raw material usage station.

[0065] Embodiment 5

[0066] Refer to Figure 2 , what is different about this embodiment from the above embodiments is that a coal concentration and powder feeding system is also provided, which includes the fine powder separator in the above embodiments and also includes; a coal mill 3000 for grinding coal; a coarse powder separator 2000, which is connected to the coal mill 3000 and is connected to the fine powder separator through an inlet channel 101; a feeder 4000, which is connected to the fine powder separator through a discharge channel 102 and can transport pulverized coal to the furnace 6000.

[0067] Among them, the fine powder separator is connected to a powder bin 7000, and the pulverized coal inside it can enter the inside of the powder bin 7000. In addition, the feeder 4000 is connected to the coal mill 3000, and a recirculation door 5000 is provided between the two.

[0068] The rest of the structure is the same as that of Embodiment 4.

[0069] Working process: The coal raw material processed by the coal mill 3000 enters the inside of the coarse powder separator 2000. After being processed inside the coarse powder separator 2000, it reaches the inside of the fine powder separator through the inlet channel 101. And inside the fine powder separator, the pulverized coal is processed again and stored inside the powder bin 7000. When in use, the processed pulverized coal reaches the feeder 4000 through the discharge channel 102, and the pulverized coal is sent to the furnace 6000 for combustion through the feeder 4000.

[0070] When the rotational speed of the coal feeder 4000 is too high and it deviates from the stable operating area, it will cause the pulverized coal to not fall smoothly by its own gravity, resulting in a decrease in the coal output. In this case, open the supplementary channel 200 to supplement the coal raw material into the discharge channel 102, increase the fuel amount in the furnace 6000, avoid uneven coal output caused by too high rotational speed of the coal feeder 4000, and improve the load-carrying capacity of the unit.

[0071] It is important to note that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0072] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present invention, or those features that are not relevant to the implementation of the present invention).

[0073] It should be understood that in the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A concentration adjustment mechanism, characterized in that: It includes, A channel component (100), including an inlet channel (101) and a discharge channel (102) connected to the inlet channel (101); A supplementary channel (200), including a switch cabin (201), a first communication section (202) connecting the switch cabin (201) and the inlet channel (101), and a second communication section (203) connecting the switch cabin (201) and the discharge channel (102); and, A switch component (300), including a switch valve core (301) provided inside the switch cabin (201) that can adjust the switch state of the supplementary channel (200), and a switch rotating shaft (302) connected to the switch valve core (301); The discharge channel (102) includes an outlet section (102a), an extension section (102b) connected to the outlet section (102a), and a summary section (102c) that simultaneously connects the extension section (102b) and the second communication section (203); It further includes an interleaved stabilization mechanism (400), which includes a stabilization housing (401) fixed to the channel component (100), and an intersection valve assembly (402) provided inside the stabilization housing (401); Inside the stabilization housing (401), a horizontal through chamber (401a) is provided, and a valve core chamber (401b) is provided on the side wall of the horizontal through chamber (401a); Wherein, the stabilization housing (401) has an inlet end (401c) connected to the second communication section (203) and a discharge end (401d) connected to the summary section (102c); The intersection valve assembly (402) includes, A rotating core (402a) provided inside the valve core chamber (401b), on which a first through valve hole (402a-1) and a second through valve hole (402a-2) perpendicular to each other are provided; An intersection core (402b) passing through the rotating core (402a) and capable of rotating synchronously with the rotating core (402a), which has a collection end (402b-1) connected to the second communication section (203), a through section (402b-2) passing through the rotating core (402a), and an expansion end (402b-3) communicating with the summary section (102c).

2. The concentration adjustment mechanism according to claim 1, characterized in that: An inlet hole (K) is provided on the collection end (402b-1), and the collection end (402b-1) can rotate synchronously with the switch rotating shaft (302).

3. The concentration adjustment mechanism according to claim 2, characterized in that: It further includes an anti-cross-flow component (500), which includes, A folding baffle group (501) provided inside the summary section (102c); A pushing assembly (502) that can slide as the intersection core (402b) rotates; A transmission assembly (503) provided between the folding baffle group (501) and the pushing assembly (502); Wherein, when the pushing assembly (502) slides, it can drive the folding baffle group (501) to expand / close through the transmission assembly (503).

4. The concentration adjustment mechanism according to claim 3, characterized in that: the folding baffle group (501) includes an inclined plate (501a) fixed to the inner side of the aggregation section (102c), and a rotating plate (501b) provided on the inclined plate (501a); the rotating plate (501b) is connected to the transmission assembly (503). When the transmission assembly (503) moves in the first direction, it can push the rotating plate (501b) to rotate and unfold. When the transmission assembly (503) moves in the second direction, it can pull the rotating plate (501b) to rotate and close. When the rotating plate (501b) is in the closed state, it can disconnect the expansion end (402b-3) from the aggregation section (102c).

5. The concentration adjustment mechanism according to claim 4, characterized in that: the pushing assembly (502) includes an elastic sliding member (502a), which includes a fixed shaft (502a-1), a socket spring (502a-2) sleeved inside the fixed shaft (502a-1), a connecting ring (502a-3) slidably sleeved outside the fixed shaft (502a-1), an extension rod (502a-4) provided on the connecting ring (502a-3), and a chuck (502a-5) provided at the end of the extension rod (502a-4); further includes a rotating pressing member (502b), which is provided with a pressing inclined surface (M1) connected to the expansion end (402b-3), a flat surface (M2) connected to the pressing inclined surface (M1), and a card slot (M3) opened on the flat surface (M2); the transmission assembly (503) includes an extension column (503a) connected to the connecting ring (502a-3), a pushing support member (503b) provided at the end of the extension column (503a), and a connecting column member (503c) provided on the rotating plate (501b) and slidably connected to the support member.

6. A fine powder separator, characterized in that: it includes the concentration adjustment mechanism according to claim 5, and also includes a main separator (1000); the discharge channel (102) is provided at the top of the main separator (1000), and the inlet channel (101) is communicated with the side wall of the main separator (1000).

7. A concentrated powder feeding system, characterized in that: it includes the fine powder separator according to claim 6, and also includes; a coal mill (3000) for grinding coal; a coarse powder separator (2000), which is connected to the coal mill (3000) and is connected to the fine powder separator through the inlet channel (101); a feeder (4000), which is connected to the fine powder separator through the discharge channel (102) and can transport pulverized coal to the furnace (6000).

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