Inner hopper material returning device of double-adjustment split-flow type separator

Abstract

The utility model relates to the technical field of separators, and discloses an inner hopper material returning device of a double-adjustment split-flow type separator. The inner cone is fixed in the separator through a frame body; the coal conveying pipe is inserted from the top of the separator and penetrates through the inner cone; the top of the grinding part is connected with the bottom of the separator, the bottom of the coal conveying pipe communicates with the grinding part, and a drainage pipe is arranged on the lower portion of the grinding part; the first cleaning part is arranged on the inner side wall of the separator at the top of the inner cone; and the air blowing device is arranged outside the separator, and an air blowing opening of the air blowing device communicates with the grinding part. The first cleaning part is arranged to clean the inner side wall and the outer side wall of the inner cone, coal powder attached to the inner cone is cleaned away, the coal powder separation of the coal mill for the next time is prevented from being affected, the blowing device is arranged, blowing can be conducted on the separator cleaned through the first cleaning part, drying is accelerated, the cleaning efficiency is improved, and the service life of the separator is prolonged. Water spots are prevented from influencing the service life of the coal mill.

Description

Technical Field

[0001] The utility model relates to the technical field of separators, in particular to an inner bucket material returning device of a double-adjusting split-flow separator. Background Art

[0002] The double-adjustment separator of the coal mill is a key equipment used in the coal pulverization system. It is mainly used to separate fine particles and coarse particles in the coal powder, and by adjusting the two independently, the particle size control of the coal powder and the improvement of combustion efficiency can be achieved. The double-adjustment separator of the coal mill usually includes a separator and two regulators. The separator is a device used to separate the coal powder at the outlet of the coal mill into fine particles and coarse particles. It usually uses a certain airflow or centrifugal force to separate the coal powder according to the particle size. The finer particles will be discharged through the fine particle outlet of the separator, while the coarser particles will be discharged through the coarse particle outlet. The regulator is a device used to independently adjust the fine particles and coarse particles. Through the regulator, the ratio and particle size distribution of fine particles and coarse particles can be changed. Generally, the regulator can adjust the flow rate, speed, pressure and other parameters of the coal powder to control the particle size and distribution of the coal powder. Through the double-adjustment separator of the coal mill, the particle size of the coal powder can be accurately controlled. This is very important for the stability of the combustion system and the improvement of combustion efficiency. By adjusting the ratio and particle size distribution of fine particles and coarse particles, the requirements of different combustion equipment and combustion conditions can be met, and the combustion efficiency and thermal energy utilization rate of pulverized coal can be improved.

[0003] However, in the prior art, after the coal mill stops working, only the grinding rollers and grinding discs are cleaned, and no cleaning device is provided on the return device, so the return device in the separator cannot be cleaned, so that a large amount of coal powder and coal slag particles are attached to the inner and outer walls of the return device, which will affect the separation of coal powder by the separator over time.

[0004] Therefore, there is an urgent need for an inner bucket return device of a dual-adjustment split-flow separator to solve the problem of how to clean the inner return device of the separator. Utility Model Content

[0005] In view of this, the utility model proposes an inner bucket material return device of a double-adjustable split-flow separator, aiming to solve the problem of how to clean the inner bucket material return device of the separator.

[0006] The utility model provides an inner bucket material returning device of a double-adjustable split-flow separator, comprising:

[0007] Separator;

[0008] An inner cone, which is fixed in the separator by a frame;

[0009] A coal conveying pipe, which is inserted from the top of the separator and passes through the inner cone;

[0010] A grinding part, the top of which is connected to the bottom of the separator, the bottom of the coal conveying pipe is connected to the grinding part, and a drainage pipe is provided at the bottom of the grinding part;

[0011] A first cleaning portion, which is disposed on the inner side wall of the separator at the top of the inner cone;

[0012] A blowing device is arranged outside the separator, and a blowing port of the blowing device is communicated with the grinding part.

[0013] Furthermore, the first cleaning unit includes:

[0014] a fixing plate, which is detachably arranged on the outer side wall of the separator;

[0015] A water inlet pipe, which is fixed on the fixing plate, the water inlet pipe is connected with the separator, and the water inlet pipe is used to introduce an external water source;

[0016] A spray head, one end of which is connected to the water inlet pipe, and the spray head is also located in the separator.

[0017] Furthermore, the first cleaning unit also includes:

[0018] A sewage collecting barrel, which is arranged outside the separator, an adsorption filter is arranged in the sewage collecting barrel, the adsorption filter is fixed in the middle of the sewage collecting barrel, and the drainage pipe is connected to the sewage collecting barrel;

[0019] A circulation pipe, one end of which is connected to the sewage collecting bucket, and the other end of which is connected to the water inlet pipe.

[0020] Furthermore, the nozzle is a rotating nozzle, and a plurality of water outlets are arranged at one end of the nozzle away from the water inlet pipe.

[0021] Furthermore, the inner bucket return device of the dual-adjustment split-flow separator also includes:

[0022] The second cleaning part is arranged at the upper part of the separator, and the second cleaning part is also located at the upper part of the first cleaning part.

[0023] Furthermore, the second cleaning unit includes:

[0024] A plurality of fixing blocks are provided, and the fixing blocks are arranged on the inner side wall of the separator;

[0025] A high-pressure nozzle is fixed on the fixed block, a water spraying end of the high-pressure nozzle faces the coal conveying pipe, and the high-pressure nozzle is connected to an external water source.

[0026] Furthermore, the inner bucket return device of the dual-adjustment split-flow separator also includes:

[0027] A controller is arranged on the outer side wall of the separator, and the controller is electrically connected to the first cleaning part, the second cleaning part and the blowing device respectively.

[0028] Furthermore, the inner bucket return device of the dual-adjustment split-flow separator also includes:

[0029] The dust sensors include a plurality of dust sensors, which are respectively arranged at the corners of the separator close to the first cleaning part and the top of the separator, and the dust sensors are electrically connected to the controller.

[0030] Furthermore, the inner bucket return device of the dual-adjustment split-flow separator also includes:

[0031] The intercepting net is detachably arranged on the outlet of the fine-particle coal powder, and is used for filtering the large-particle coal powder.

[0032] Furthermore, the inner bucket return device of the dual-adjustment split-flow separator also includes:

[0033] A base, which is arranged at the bottom of the grinding part;

[0034] The supporting part is arranged at the bottom of the blowing device.

[0035] Compared with the prior art, the beneficial effect of the utility model lies in that a first cleaning part is provided to clean the return device in the separator, that is, to clean the inner wall and the outer wall of the inner cone, and to clean the coal powder attached to the inner cone to prevent it from affecting the next separation of the coal powder by the coal mill. A blowing device is provided to blow air to the separator after being cleaned by the first cleaning part, which can not only speed up drying and improve cleaning efficiency, but also prevent water stains from affecting the life of the coal mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0037] Figure 1 A cross-sectional view of an inner bucket return device of a double-adjustable split-flow separator provided in an embodiment of the utility model;

[0038] Figure 2 A schematic structural diagram of an inner bucket return device of a double-adjustable split-flow separator provided in an embodiment of the utility model;

[0039] Figure 3 for Figure 1 Enlarged detail of point A in the middle.

[0040] In the figure: 100, separator; 110, inner cone; 120, frame; 200, coal conveying pipe; 300, grinding part; 310, base; 320, drain pipe; 400, first cleaning part; 410, fixing plate; 420, water inlet pipe; 430, nozzle; 440, sewage collecting barrel; 450, circulation pipe; 500, blowing device; 510, supporting part; 600, second cleaning part; 610, fixing block; 620, high-pressure nozzle; 700, controller; 800, dust sensor; 900, interception net. DETAILED DESCRIPTION

[0041] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] See also Figure 1-3As shown, the present embodiment provides an inner bucket return device of a dual-adjustable split-flow separator, comprising a separator 100; an inner cone 110, fixed in the separator 100 by a frame 120; a coal conveying pipe 200, inserted from the top of the separator 100 and passing through the inner cone 110; a grinding section 300, the top of which is connected to the bottom of the separator 100, the bottom of the coal conveying pipe 200 is connected to the grinding section 300, and a drain pipe 320 is provided at the lower part of the grinding section 300; a first cleaning section 400, arranged on the inner side wall of the separator 100 at the top of the inner cone 110; a blowing device 500, arranged on the outside of the separator 100, and the blowing port of the blowing device 500 is connected to the grinding section 300.

[0046] It can be understood that the first cleaning section 400 is provided to clean the return device in the separator 100, that is, to clean the inner wall and the outer wall of the inner cone 110, and to clean the coal powder attached to the inner cone 110 to prevent it from affecting the next separation of the coal powder by the coal mill. The blowing device 500 is provided to blow air to the separator 100 after being cleaned by the first cleaning section 400, which can not only speed up drying and improve cleaning efficiency, but also prevent water stains from affecting the life of the coal mill.

[0047] In a specific embodiment of the present application, the first cleaning part 400 includes a fixed plate 410, which is detachably arranged on the outer wall of the separator 100; a water inlet pipe 420, which is fixed on the fixed plate 410, and the water inlet pipe 420 is connected to the separator 100, and the water inlet pipe 420 is used to introduce an external water source; a nozzle 430, one end of which is connected to the water inlet pipe 420, and the nozzle 430 is also located in the separator 100.

[0048] It is understandable that the fixing plate 410 is fixed to the separator 100 by bolts, and the water inlet pipe 420 introduces external water source, and sprays it to the inner cone 110 and the inner wall of the separator 100 through the nozzle 430, so as to clean the inner cone 110 and the inner wall of the separator 100, and the cleaned water is discharged through the drain pipe 320. Preferably, the water inlet pipe 420 can also be connected to a supply device of a cleaning liquid, so as to clean the inner cone 110 and the inner wall of the separator 100 with a specific cleaning liquid.

[0049] In a specific embodiment of the present application, the first cleaning unit 400 also includes a dirt collecting barrel 440, which is arranged outside the separator 100. An adsorption filter is arranged in the dirt collecting barrel 440, and the adsorption filter is fixed in the middle of the dirt collecting barrel 440. The drain pipe 320 is connected to the dirt collecting barrel 440; one end of the circulation pipe 450 is connected to the dirt collecting barrel 440, and the other end of the circulation pipe 450 is connected to the water inlet pipe 420.

[0050] It is understandable that a sewage collecting barrel 440 is provided to uniformly treat sewage, and the filtered water is reused and connected to the water inlet pipe 420 through the circulation pipe 450 to clean the inner cone 110 and the inside of the separator 100, thereby saving resources.

[0051] In a specific embodiment of the present application, the nozzle 430 is a rotating nozzle, and a plurality of water outlets are provided at one end of the nozzle 430 away from the water inlet pipe 420 .

[0052] It is understandable that setting the nozzle 430 as a rotating nozzle can expand the cleaning range, and setting a plurality of water outlets on the nozzle 430 can greatly improve the cleaning efficiency of the first cleaning part 400.

[0053] In a specific embodiment of the present application, the inner bucket return device of the dual-adjustment split-flow separator also includes a second cleaning section 600, which is arranged at the upper part of the separator 100, and the second cleaning section 600 is also located at the upper part of the first cleaning section 400.

[0054] It is understandable that the second cleaning unit 600 can clean other components in the separator 100 , and cooperate with the first cleaning unit 400 to improve the cleaning efficiency of the return device in the separator 100 .

[0055] In a specific embodiment of the present application, the second cleaning section 600 includes a fixed block 610, which is provided in plurality and is arranged on the inner wall of the separator 100; a high-pressure nozzle 620, which is fixed on the fixed block 610, and the water spraying end of the high-pressure nozzle 620 is facing the coal conveying pipe 200, and the high-pressure nozzle 620 is connected to an external water source.

[0056] It is understandable that setting a plurality of fixed blocks 610 and fixing the high-pressure nozzles 620 on the fixed blocks 610, that is, setting a plurality of high-pressure nozzles 620, can speed up the cleaning speed. Setting the high-pressure nozzles 620 can also clean the attached stubborn coal powder, and the cleaning effect is good.

[0057] In a specific embodiment of the present application, the inner bucket return device of the dual-adjustment split-flow separator also includes a controller 700, which is arranged on the outer wall of the separator 100, and the controller 700 is electrically connected to the first cleaning part 400, the second cleaning part 600 and the blowing device 500 respectively.

[0058] It can be understood that the controller 700 is electrically connected to the first cleaning section 400, and can control the rotation direction, rotation speed, water output and spraying time of the nozzle 430, and can also control whether the first cleaning section 400 introduces water from the circulation pipe 450 or other water sources; the controller 700 is connected to the second cleaning section 600, and can control the water volume and spraying time of the high-pressure nozzle 620, etc., for easy operation.

[0059] In a specific embodiment of the present application, the inner bucket return device of the dual-adjustment diversion separator also includes a dust sensor 800, which includes several dust sensors 800. The dust sensors 800 are respectively arranged at the corners of the separator 100 close to the first cleaning part 400 and the top inside the separator 100. The dust sensor 800 is electrically connected to the controller 700.

[0060] It can be understood that the dust sensor 800 is provided to detect whether there is coal powder in the separator 100 when the blowing device 500 is blowing. The provision of several dust sensors 800 can improve the accuracy of dust detection. The dust sensor 800 is connected to the controller 700 to facilitate the transmission of dust data to the controller 700. The controller 700 controls the first cleaning section 400 and the second cleaning section 600 to clean the separator 100 again, thereby improving the cleaning efficiency.

[0061] In a specific embodiment of the present application, the inner bucket return device of the dual-adjustable diversion separator also includes an interception net 900, which is detachably arranged on the outlet of the fine-particle coal powder. The interception net 900 is used to filter the large-particle coal powder. It is arranged in a detachable form to facilitate disassembly and replacement. The pore size of the interception net 900 can be selected according to actual conditions.

[0062] It can be understood that the interception net 900 is arranged at the outlet of the fine-particle coal powder, which can intercept the large-particle coal powder mixed in the fine-particle coal powder and improve the quality of the coal powder.

[0063] In a specific embodiment of the present application, the inner bucket return device of the dual-adjustable split-flow separator also includes a base 310, which is arranged at the bottom of the grinding part 300; and a support part 510, which is arranged at the bottom of the blowing device 500.

[0064] It can be understood that the base 310 is used to support the separator 100 and the grinding part 300 , and the supporting part 510 is used to support the blowing device 500 .

[0065] Working principle of the utility model: after the coal mill is finished working, the external water source is introduced into the separator 100, and the inner wall and the return device of the separator 100 are cleaned through the nozzle 430 and the high-pressure nozzle 620, and the cleaned sewage is discharged into the sewage collecting barrel 440 through the drain pipe 320. The sewage in the sewage collecting barrel 440 is adsorbed and filtered by the adsorption filter, and then introduced into the nozzle 430 through the circulation pipe 450 for reuse; after the first cleaning part 400 and the second cleaning part 600 complete the cleaning, the blowing device 500 blows air to dry the water stains. At this time, the dust sensor 800 monitors the dust in the separator 100 in real time, and transmits the dust information to the controller 700. The controller 700 selects whether to restart the first cleaning part 400 and the second cleaning part 600 for cleaning according to the dust information. If the dust exceeds the standard, the cleaning continues, and if the dust meets the standard, the cleaning stops.

[0066] In summary, the first cleaning section 400 is provided to clean the return device in the separator 100, that is, to clean the inner wall and the outer wall of the inner cone 110, and to clean the coal powder attached to the inner cone 110 to prevent it from affecting the next separation of the coal powder by the coal mill. The blowing device 500 is provided to blow air to the separator 100 after being cleaned by the first cleaning section 400, which can not only speed up drying and improve cleaning efficiency, but also prevent water stains from affecting the life of the coal mill.

[0067] Furthermore, a sewage collecting bucket 440 is provided to uniformly treat sewage, and the filtered water is reused and connected to the water inlet pipe 420 through the circulation pipe 450 to clean the inner cone 110 and the inside of the separator 100, thereby saving resources. The nozzle 430 is provided as a rotating nozzle, which can expand the cleaning range, and a plurality of water outlets are provided on the nozzle 430, which can greatly improve the cleaning efficiency of the first cleaning part 400.

[0068] Furthermore, the second cleaning unit 600 can clean other components in the separator 100, and cooperate with the first cleaning unit 400 to improve the cleaning efficiency of the return device in the separator 100. A plurality of fixed blocks 610 are provided, and the high-pressure nozzles 620 are fixed on the fixed blocks 610, that is, a plurality of high-pressure nozzles 620 are provided, which can speed up the cleaning speed, and the high-pressure nozzles 620 can also clean the attached stubborn coal powder, and the cleaning effect is good.

[0069] Furthermore, the controller 700 is electrically connected to the first cleaning section 400, and can control the rotation direction, rotation speed, water output and spraying time of the nozzle 430, and can also control whether the first cleaning section 400 introduces water from the circulation pipe 450 or other water sources; the controller 700 is connected to the second cleaning section 600, and can control the water volume and spraying time of the high-pressure nozzle 620, so as to facilitate operation.

[0070] Furthermore, a dust sensor 800 is provided to detect whether there is coal powder in the separator 100 when the blowing device 500 is blowing. The provision of several dust sensors 800 can improve the accuracy of dust detection. The dust sensor 800 is connected to the controller 700 to facilitate the transmission of dust data to the controller 700. The controller 700 controls the first cleaning section 400 and the second cleaning section 600 to clean the separator 100 again, thereby improving the cleaning efficiency.

[0071] Furthermore, the interception net 900 is arranged at the outlet of the fine coal powder, which can intercept the large coal powder particles mixed in the fine coal powder particles and improve the quality of the coal powder.

[0072] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inner bucket return device for a double-adjustable split-flow separator, characterized in that: include: Separator; An inner cone, which is fixed in the separator by a frame; A coal conveying pipe, which is inserted from the top of the separator and passes through the inner cone; A grinding part, the top of which is connected to the bottom of the separator, the bottom of the coal conveying pipe is connected to the grinding part, and a drainage pipe is provided at the bottom of the grinding part; A first cleaning portion, which is disposed on the inner side wall of the separator at the top of the inner cone; A blowing device is arranged outside the separator, and a blowing port of the blowing device is communicated with the grinding part.

2. The inner bucket return device of the double-adjustable split-flow separator according to claim 1, characterized in that: The first cleaning unit comprises: a fixing plate, which is detachably arranged on the outer side wall of the separator; A water inlet pipe, which is fixed on the fixing plate, the water inlet pipe is connected with the separator, and the water inlet pipe is used to introduce an external water source; A spray head, one end of which is connected to the water inlet pipe, and the spray head is also located in the separator.

3. The inner bucket return device of the double-adjustable split-flow separator according to claim 2 is characterized in that: The first cleaning unit also includes: A sewage collecting barrel, which is arranged outside the separator, an adsorption filter is arranged in the sewage collecting barrel, the adsorption filter is fixed in the middle of the sewage collecting barrel, and the drainage pipe is connected to the sewage collecting barrel; A circulation pipe, one end of which is connected to the sewage collecting bucket, and the other end of which is connected to the water inlet pipe.

4. The inner bucket return device of the double-adjustable split-flow separator according to claim 2, characterized in that: The nozzle is a rotating nozzle, and one end of the nozzle away from the water inlet pipe is provided with a plurality of water outlets.

5. The inner bucket return device of the double-adjustable split-flow separator according to claim 4, characterized in that: The inner bucket return device of the dual-adjustment split-flow separator also includes: The second cleaning part is arranged at the upper part of the separator, and the second cleaning part is also located at the upper part of the first cleaning part.

6. The inner bucket material return device of the double-adjustable split-flow separator according to claim 5, characterized in that: The second cleaning unit comprises: A plurality of fixing blocks are provided, and the fixing blocks are arranged on the inner side wall of the separator; A high-pressure nozzle is fixed on the fixed block, a water spraying end of the high-pressure nozzle faces the coal conveying pipe, and the high-pressure nozzle is connected to an external water source.

7. The inner bucket material return device of the double-adjustable split-flow separator according to claim 6, characterized in that: The inner bucket return device of the dual-adjustment split-flow separator also includes: A controller is arranged on the outer side wall of the separator, and the controller is electrically connected to the first cleaning part, the second cleaning part and the blowing device respectively.

8. The inner bucket material return device of the double-adjustable split-flow separator according to claim 7, characterized in that: The inner bucket return device of the dual-adjustment split-flow separator also includes: The dust sensors include a plurality of dust sensors, which are respectively arranged at the corners of the separator close to the first cleaning part and the top of the separator, and the dust sensors are electrically connected to the controller.

9. The inner bucket material return device of the double-adjustable split-flow separator according to claim 1, characterized in that: The inner bucket return device of the dual-adjustment split-flow separator also includes: The intercepting net is detachably arranged on the outlet of the fine-particle coal powder, and is used for filtering the large-particle coal powder.

10. The inner bucket material return device of the double-adjustable split-flow separator according to claim 1, characterized in that: The inner bucket return device of the dual-adjustment split-flow separator also includes: A base, which is arranged at the bottom of the grinding part; The supporting part is arranged at the bottom of the blowing device.

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