Carbon black air blower and system

Abstract

The utility model provides a carbon black air feeder and system, and relates to the technical field of carbon black production. The carbon black air blower comprises a shell, an impeller, a transmission shaft, a sealing body and a sealing sleeve. The shell defines a containing cavity, the impeller is arranged in the containing cavity, one end of the transmission shaft is in transmission connection with the impeller, the other end of the transmission shaft is connected with the motor, the sealing body is arranged between the shell and the transmission shaft so that the shell and the transmission shaft can be connected in a sealed mode, the sealing body is fixedly connected to the shell, and the sealing sleeve is arranged between the sealing body and the impeller and connected to the impeller or the transmission shaft. And an arch-shaped sealing channel is formed between the sealing sleeve and the sealing body. Wherein the sealing body is fixedly connected to the shell, the sealing sleeve is connected to the impeller or the transmission shaft, namely, the sealing body and the sealing sleeve are in a relative motion state, acetylene carbon black can not easily pass through an arch-shaped sealing channel formed between the sealing sleeve and the sealing body, and therefore dynamic sealing between the sealing sleeve and the sealing body is achieved. And the sealing performance between the shell and the transmission shaft of the carbon black air blower is improved.

Description

Technical Field

[0001] The present application relates to the technical field of carbon black production, and more particularly, to a carbon black pneumatic blower and system. Background Art

[0002] Acetylene carbon black is obtained by high-temperature cracking of acetylene. In the production of acetylene carbon black, a mixture of acetylene carbon black and hydrogen is obtained by high-temperature cracking of acetylene. Due to the small particle size of acetylene carbon black, it is easy to form dust with hydrogen and is difficult to separate. The product obtained by acetylene cracking needs to be transported to a cyclone separation device by a high-temperature resistant centrifugal fan for treatment. Due to the fluffy and high-temperature characteristics of acetylene carbon black, and its particle size is only 10μm - 40μm, the existing carbon black pneumatic blowers have good sealing performance but are prone to carbon black leakage. Summary of the Utility Model

[0003] The purpose of the embodiments of the present application is to provide a carbon black pneumatic blower and system, which can improve the sealing performance between the housing of the blower and the transmission shaft, and improve the problem that the carbon black pneumatic blower is prone to acetylene carbon black leakage.

[0004] In a first aspect, the embodiments of the present application provide a carbon black pneumatic blower, which includes a housing, an impeller, a transmission shaft, a seal body, and a seal sleeve. The housing defines an internal accommodation cavity, the accommodation cavity has a carbon black inlet and a carbon black outlet, the impeller is arranged in the accommodation cavity, one end of the transmission shaft is drivingly connected to the impeller, and the other end is used to connect to a motor. The seal body is arranged between the housing and the transmission shaft to make the housing and the transmission shaft be sealingly connected. The seal body is fixedly connected to the housing. The seal sleeve is arranged between the seal body and the impeller, the seal sleeve is connected to the impeller or the transmission shaft, and an arcuate sealing channel is formed between the seal sleeve and the seal body.

[0005] In the above implementation process, the transmission shaft is drivingly connected to the impeller and is driven by the motor to drive the impeller to rotate, so that acetylene carbon black enters the accommodation cavity inside the housing from the carbon black inlet and is transported to the cyclone separation device through the carbon black outlet. The carbon black pneumatic blower of the present application makes the housing and the transmission shaft be sealingly connected through the cooperation of the seal body and the seal sleeve. Among them, the seal body is fixedly connected to the housing, the seal body and the transmission shaft are in a relative motion state, the seal sleeve is connected to the impeller or the transmission shaft and will rotate with the impeller or the transmission shaft, that is, the seal body and the seal sleeve are in a relative motion state, and the arcuate sealing channel formed between the seal sleeve and the seal body can make acetylene carbon black not easily pass through, thereby realizing the dynamic sealing between the seal sleeve and the seal body, improving the sealing performance between the housing of the carbon black pneumatic blower and the transmission shaft, and improving the problem that the carbon black pneumatic blower is prone to acetylene carbon black leakage.

[0006] In a possible implementation manner, the cross-section of the arcuate sealing channel along the axial direction of the transmission shaft includes at least three sequentially connected straight channels, and the included angle between any two adjacent straight channels is 10° - 120°.

[0007] In the above implementation process, by making the cross-section of the bow-shaped sealing channel along the axial direction of the transmission shaft include at least three successively connected straight channels, and the included angle between any two adjacent straight channels is 10° - 120°, the acetylene carbon black needs to pass through at least two corners with relatively small angles in the bow-shaped sealing channel before it can pass through the bow-shaped sealing channel, so that the acetylene carbon black is not easily passed through the bow-shaped sealing channel, realizing the dynamic seal between the sealing sleeve and the sealing body, and improving the sealing performance between the housing of the carbon black pneumatic blower and the transmission shaft.

[0008] In a possible implementation scheme, the cross-section of the bow-shaped sealing channel along the axial direction of the transmission shaft includes four successively connected straight channels, and the included angle between any two adjacent straight channels is 90°.

[0009] In the above implementation process, by making the cross-section of the shaped sealing channel along the axial direction of the transmission shaft include four successively connected straight channels, and the included angle between any two adjacent straight channels is 90°, the acetylene carbon black needs to pass through three 90° corners in the bow-shaped sealing channel before it can pass through the bow-shaped sealing channel, so that the acetylene carbon black is not easily passed through the bow-shaped sealing channel, realizing the dynamic seal between the sealing sleeve and the sealing body, and improving the sealing performance between the housing of the carbon black pneumatic blower and the transmission shaft.

[0010] In a possible implementation scheme, the transmission shaft has a shaft shoulder, the sealing sleeve has a clamping groove, one end of the sealing sleeve abuts against the impeller, the clamping groove abuts against the shaft shoulder, and a bow-shaped sealing channel is formed between the other end of the sealing sleeve and the sealing body.

[0011] In the above implementation process, the sealing sleeve is fixed between the impeller and the shaft shoulder by abutting against the impeller and the shaft shoulder respectively, and will rotate with the impeller or the transmission shaft.

[0012] In a possible implementation scheme, the impeller is fixedly connected to the transmission shaft through a connecting piece, and the connecting piece is arranged along the axial direction of the transmission shaft.

[0013] In the above implementation process, before fixing the impeller to the transmission shaft through the connecting piece, first set the sealing sleeve between the sealing body and the impeller, and make its clamping groove abut against the shaft shoulder, and then after fixing the impeller to the transmission shaft through the connecting piece, because the connecting piece will apply a locking force along the axial direction of the transmission shaft to the impeller, so that the sealing sleeve is tightly clamped between the sealing body and the impeller.

[0014] In a possible implementation scheme, a first groove is opened at one end of the sealing body close to the sealing sleeve, an annular air cavity is formed between the inner wall of the first groove and the outer wall of the transmission shaft, and the sealing body is also provided with a protective gas interface communicating with the annular air cavity.

[0015] In the above implementation process, protective gas can be filled into the annular gas chamber through the protective gas interface, making the annular gas chamber slightly positively pressurized, so that acetylene carbon black is difficult to enter the annular gas chamber, further improving the sealing performance between the housing and the transmission shaft of the carbon black pneumatic blower.

[0016] In a possible implementation, a second groove is further formed at one end of the seal body away from the seal sleeve. The inner wall of the second groove and the outer wall of the transmission shaft form a packing cavity, and a sealing packing is arranged in the packing cavity.

[0017] In the above implementation process, the sealing packing is arranged in the packing cavity to improve the sealing performance between the housing and the transmission shaft of the carbon black pneumatic blower.

[0018] In a possible implementation, the carbon black pneumatic blower further includes a sealing gland, which is arranged at the end of the seal body away from the seal sleeve.

[0019] In the above implementation process, the sealing gland can improve the sealing performance between the housing and the transmission shaft of the carbon black pneumatic blower and prevent the leakage of the sealing packing.

[0020] In a second aspect, an embodiment of the present application provides a carbon black pneumatic conveying system, which includes a motor and the carbon black pneumatic blower in the above embodiment, and the motor is drivingly connected to the transmission shaft.

[0021] In a possible implementation, the carbon black pneumatic conveying system further includes a bearing housing and a coupling. The bearing housing is arranged between the carbon black pneumatic blower and the coupling, and the coupling is arranged between the bearing housing and the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of the carbon black pneumatic blower according to an embodiment of the present application;

[0024] Figure 2 is Figure 1 a partial schematic diagram of;

[0025] Figure 3 is a cross-sectional view of the seal body according to an embodiment of the present application;

[0026] Figure 4 is a schematic structural diagram of the carbon black pneumatic conveying system according to an embodiment of the present application.

[0027] Icons: 10 - Carbon black pneumatic blower; 100 - Housing; 101 - Accommodation chamber; 102 - Carbon black inlet; 103 - Carbon black outlet; 200 - Impeller; 210 - Connecting piece; 300 - Transmission shaft; 301 - Shoulder; 310 - First shaft body; 320 - Second shaft body; 400 - Sealing body; 401 - Annular air chamber; 402 - Protection gas interface; 410 - Sealing packing; 500 - Sealing sleeve; 600 - Bow-shaped sealing channel; 601 - Straight channel; 700 - Sealing gland; 1000 - Carbon black pneumatic conveying system; 20 - Motor; 30 - Bearing housing; 40 - Coupling. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does 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 cannot be understood as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] Please refer to Figure 1 and 2 , the present application provides a carbon black pneumatic blower 10, which includes: a housing 100, an impeller 200, a transmission shaft 300, a seal body 400, and a seal sleeve 500.

[0035] Among them, the housing 100 defines an internal accommodation cavity 101, and the accommodation cavity 101 has a carbon black inlet 102 and a carbon black outlet 103. When the carbon black pneumatic blower 10 is in a working state, acetylene carbon black enters the accommodation cavity 101 through the carbon black inlet 102 and is conveyed to a cyclone separation device through the carbon black outlet 103.

[0036] In the embodiments as shown in Figure 1 and 2 , the housing 100 is fixed to a bracket or a base through its lower end. The carbon black inlet 102 is located at the left end of the housing 100, and the carbon black outlet 103 is located at the top end of the housing 100. Acetylene carbon black enters the accommodation cavity 101 through the carbon black inlet 102 at the left end of the housing 100, then is output from the carbon black outlet 103 at the top end of the housing 100, and is conveyed to a cyclone separation device.

[0037] The impeller 200 is arranged in the accommodation cavity 101. One end of the transmission shaft 300 extends into the accommodation cavity 101 inside the housing 100 for fixedly connecting the impeller 200, and the other end of the transmission shaft 300 is located outside the accommodation cavity 101 for connecting to the motor 20. When the motor 20 drives the transmission shaft 300 to rotate, the transmission shaft 300 drives the impeller 200 to rotate.

[0038] Optionally, the impeller 200 is fixedly connected to the transmission shaft 300 through a connecting member 210, and the connecting member 210 is arranged along the axial direction of the transmission shaft 300.

[0039] In the embodiments as shown in Figure 1 and 2 , the connecting member 210 is a fastening bolt, and at least two fastening bolts fixedly connect the impeller 200 to the transmission shaft 300 along the axial direction of the transmission shaft 300.

[0040] It should be noted that the present application does not limit the specific structure of the connecting member 210, as long as it can fixedly connect the impeller 200 to the transmission shaft 300 so that the transmission shaft 300 can drive the impeller 200 to rotate.

[0041] Optionally, the transmission shaft 300 includes a first shaft body 310 and a second shaft body 320. The connection part between the first shaft body 310 and the second shaft body 320 is located in the accommodation cavity 101. The end of the first shaft body 310 is used to connect the impeller 200, the end of the second shaft body 320 is used to connect the motor 20, and the inner diameter of the cross-section of the first shaft body 310 is smaller than the inner diameter of the cross-section of the second shaft body 320, so that the connection part between the first shaft body 310 and the second shaft body 320 forms a shaft shoulder 301.

[0042] The sealing body 400 is sleeved outside the transmission shaft 300 and is arranged between the housing 100 and the transmission shaft 300 to make the housing 100 and the transmission shaft 300 be sealed and connected. The sealing body 400 is fixedly connected to the housing 100.

[0043] In the embodiments as shown in Figure 1 and 2 , the sealing body 400 is welded to the outer surface of the housing 100. In some other embodiments of the present application, the sealing body 400 can also be fixedly connected to the housing 100 by other means.

[0044] The sealing sleeve 500 is arranged between the sealing body 400 and the impeller 200. The sealing sleeve 500 is connected to the impeller 200 or the transmission shaft 300, and an arcuate sealing channel 600 is formed between the sealing sleeve 500 and the sealing body 400.

[0045] In the embodiments as shown in Figure 1 and 2 , the sealing sleeve 500 has a clamping groove, and the connection part between the first shaft body 310 and the second shaft body 320 forms a shaft shoulder 301. One end of the sealing sleeve 500 abuts against the impeller 200, the clamping groove abuts against the shaft shoulder 301, and an arcuate sealing channel 600 is formed between the other end of the sealing sleeve 500 and the sealing body 400. The sealing sleeve 500 is fixed between the impeller 200 and the shaft shoulder 301 by abutting against the impeller 200 and the shaft shoulder 301 respectively and will rotate with the impeller 200 or the transmission shaft 300. And since the impeller 200 is fixedly connected to the transmission shaft 300 through the connecting member 210, and the connecting member 210 is arranged along the axial direction of the transmission shaft 300, before fixing the impeller 200 to the transmission shaft 300 through the connecting member 210, the sealing sleeve 500 is first arranged between the sealing body 400 and the impeller 200, and its clamping groove abuts against the shaft shoulder 301. Then, after fixing the impeller 200 to the transmission shaft 300 through the connecting member 210, the connecting member 210 will apply a locking force along the axial direction of the transmission shaft 300 to the impeller 200, so that the sealing sleeve 500 is tightly clamped between the sealing body 400 and the impeller 200.

[0046] Optionally, the cross-section of the arcuate sealing channel 600 along the axial direction of the transmission shaft 300 includes at least three sequentially connected straight channels 601, and the included angle between any two adjacent straight channels 601 is 10° to 120°.

[0047] By making the cross-section of the arcuate sealing channel 600 along the axial direction of the transmission shaft 300 include at least three sequentially connected straight channels 601, and the included angle between any two adjacent straight channels 601 is 10° to 120°, the acetylene carbon black needs to pass through at least two corners with relatively small angles in the arcuate sealing channel 600 before it can pass through the arcuate sealing channel 600, so that the acetylene carbon black is not easily passed through the arcuate sealing channel 600, realizing the dynamic seal between the sealing sleeve 500 and the sealing body 400, and improving the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300.

[0048] Optionally, the cross-section of the arcuate sealing channel 600 along the axial direction of the transmission shaft 300 includes four sequentially connected straight channels 601, and the included angle between any two adjacent straight channels 601 is 90°.

[0049] By making the cross-section of the shaped sealing channel along the axial direction of the transmission shaft 300 include four sequentially connected straight channels 601, and the included angle between any two adjacent straight channels 601 is 90°, the acetylene carbon black needs to pass through three 90° corners in the arcuate sealing channel 600 before it can pass through the arcuate sealing channel 600, so that the acetylene carbon black is not easily passed through the arcuate sealing channel 600, realizing the dynamic seal between the sealing sleeve 500 and the sealing body 400, and improving the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300.

[0050] In the carbon black pneumatic blower 10 of the present application, the housing 100 and the transmission shaft 300 are hermetically connected through the cooperation of the sealing body 400 and the sealing sleeve 500. Among them, the sealing body 400 is fixedly connected to the housing 100, and the sealing body 400 and the transmission shaft 300 are in a relative motion state. The sealing sleeve 500 is connected to the impeller 200 or the transmission shaft 300 and rotates with the impeller 200 or the transmission shaft 300, that is, the sealing body 400 and the sealing sleeve 500 are in a relative motion state. The arcuate sealing channel 600 formed between the sealing sleeve 500 and the sealing body 400 can prevent the acetylene carbon black from passing through easily, thus realizing the dynamic seal between the sealing sleeve 500 and the sealing body 400, improving the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300, and improving the problem that the carbon black pneumatic blower 10 is prone to leakage of acetylene carbon black.

[0051] Please refer to Figure 3, optionally, a first groove is formed at one end of the seal body 400 close to the seal sleeve 500. An annular gas chamber 401 is formed between the inner wall of the first groove and the outer wall of the transmission shaft 300. The seal body 400 is further provided with a protective gas interface 402 communicating with the annular gas chamber 401.

[0052] Protective gas can be filled into the annular gas chamber 401 through the protective gas interface 402, so that the annular gas chamber 401 presents a slightly positive pressure, making it difficult for acetylene carbon black to enter the annular gas chamber 401, and further improving the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300.

[0053] It should be noted that the slightly positive pressure of the annular gas chamber 401 means that the air pressure in the annular gas chamber 401 is slightly greater than the atmospheric pressure.

[0054] Optionally, the protective gas includes nitrogen.

[0055] Please continue to refer to Figure 1 and 2 , optionally, a second groove is further formed at one end of the seal body 400 away from the seal sleeve 500. A packing cavity is formed between the inner wall of the second groove and the outer wall of the transmission shaft 300, and a sealing packing 410 is arranged in the packing cavity.

[0056] In the embodiments shown in Figure 1 and 2 , four sealing packings 410 are arranged in the packing cavity, and the sealing packing 410 is graphite, which has the function of self-lubrication. In some other embodiments of the present application, the material of the sealing packing 410 can be other, and the number can be one, two, three, five or more sealing packings 410.

[0057] The sealing packing 410 is arranged in the packing cavity to improve the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300.

[0058] Optionally, the carbon black pneumatic blower 10 further includes a sealing gland 700, which is arranged at the end of the seal body 400 away from the seal sleeve 500.

[0059] The sealing gland 700 can improve the sealing performance between the housing 100 of the carbon black pneumatic blower 10 and the transmission shaft 300, and prevent the leakage of the sealing packing 410.

[0060] Please refer to Figure 4 , the present application further provides a carbon black pneumatic conveying system 1000, which includes a motor 20 and the carbon black pneumatic blower 10 in the above embodiments, and the motor 20 is drivingly connected to the transmission shaft 300.

[0061] Optionally, the carbon black pneumatic conveying system 1000 further includes a bearing housing 30 and a coupling 40. The bearing housing 30 is disposed between the carbon black pneumatic conveying fan 10 and the coupling 40, and the coupling 40 is disposed between the bearing housing 30 and the motor 20.

[0062] Please refer to Figures 1 to 3, an embodiment of the present application provides a carbon black pneumatic blower 10, which includes: a housing 100, an impeller 200, a transmission shaft 300, a seal body 400, a seal sleeve 500 and a seal gland 700. The housing 100 defines an internal accommodation cavity 101, and the accommodation cavity 101 has a carbon black inlet 102 and a carbon black outlet 103. The housing 100 is fixed to a bracket or a base through its lower end. The carbon black inlet 102 is located at the left end of the housing 100, and the carbon black outlet 103 is located at the top end of the housing 100. Acetylene carbon black enters the accommodation cavity 101 through the carbon black inlet 102 at the left end of the housing 100, and then is output from the carbon black outlet 103 at the top end of the housing 100 and conveyed to a cyclone separation device. The impeller 200 is arranged in the accommodation cavity 101. One end of the transmission shaft 300 extends into the accommodation cavity 101 inside the housing 100. At least two fastening bolts fixedly connect the impeller 200 to one end of the transmission shaft 300 along the axial direction of the transmission shaft 300. The other end of the transmission shaft 300 is located outside the accommodation cavity 101 and is used to connect the motor 20. When the motor 20 drives the transmission shaft 300 to rotate, the transmission shaft 300 drives the impeller 200 to rotate. The transmission shaft 300 includes a first shaft body 310 and a second shaft body 320. The connection part between the first shaft body 310 and the second shaft body 320 is located in the accommodation cavity 101. The end of the first shaft body 310 is used to connect the impeller 200, and the end of the second shaft body 320 is used to connect the motor 20. And the inner diameter of the cross section of the first shaft body 310 is smaller than the inner diameter of the cross section of the second shaft body 320, so that the connection part between the first shaft body 310 and the second shaft body 320 forms a shaft shoulder 301. The seal body 400 is sleeved outside the transmission shaft 300 and is arranged between the housing 100 and the transmission shaft 300 to make the housing 100 and the transmission shaft 300 be hermetically connected. The seal body 400 is welded to the outer surface of the housing 100. The seal sleeve 500 is arranged between the seal body 400 and the impeller 200. The seal sleeve 500 is connected to the impeller 200 or the transmission shaft 300. One end of the seal sleeve 500 abuts against the impeller 200, and the card slot abuts against the shaft shoulder 301. A bow-shaped seal channel 600 is formed between the other end of the seal sleeve 500 and the seal body 400. The cross section of the bow-shaped seal channel 600 along the axial direction of the transmission shaft 300 includes four sequentially connected straight channels 601, and the included angle between any two adjacent straight channels 601 is 90°. A first groove is opened at one end of the seal body 400 close to the seal sleeve 500. An annular air cavity 401 is formed between the inner wall of the first groove and the outer wall of the transmission shaft 300. The seal body 400 is also provided with a protective gas interface 402 communicating with the annular air cavity 401. A second groove is also opened at the end of the seal body 400 far from the seal sleeve 500. A packing cavity is formed between the inner wall of the second groove and the outer wall of the transmission shaft 300. Four sealing packings 410 are arranged in the packing cavity, and the sealing packings 410 are graphite. The seal gland 700 is arranged at the end of the seal body 400 far from the seal sleeve 500.

[0063] Please refer to Figure 4, the embodiment of the present application further provides a carbon black pneumatic conveying system 1000, which includes a motor 20, a bearing box 30, a coupling 40 and the carbon black pneumatic conveying fan 10 in the above embodiment. The motor 20 is drivingly connected to a transmission shaft 300. The bearing box 30 is arranged between the carbon black pneumatic conveying fan 10 and the coupling 40, and the coupling 40 is arranged between the bearing box 30 and the motor 20.

[0064] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A carbon black air blower, characterized in that: The carbon black air blower comprises: A housing defines an internal accommodating chamber, wherein the accommodating chamber has a carbon black inlet and a carbon black outlet; an impeller, wherein the impeller is disposed in the accommodating chamber; A transmission shaft, one end of which is drivingly connected to the impeller, and the other end of which is used to connect to the motor; A sealing body, wherein the sealing body is disposed between the housing and the transmission shaft so that the housing and the transmission shaft are sealed and connected, and the sealing body is fixedly connected to the housing; A sealing sleeve is arranged between the sealing body and the impeller, the sealing sleeve is connected to the impeller or the transmission shaft, and an arcuate sealing channel is formed between the sealing sleeve and the sealing body.

2. The carbon black air blower according to claim 1, characterized in that: The cross section of the arcuate sealing channel along the axial direction of the transmission shaft includes at least three linear channels that are interconnected in sequence, and the included angle between any two adjacent linear channels is 10° to 120°.

3. The carbon black air blower according to claim 1, characterized in that: The cross section of the arcuate sealing channel along the axial direction of the transmission shaft includes four linear channels that are interconnected in sequence, and the angle between any two adjacent linear channels is 90°.

4. The carbon black air blower according to claim 1, characterized in that: The transmission shaft has a shaft shoulder, the sealing sleeve has a groove, one end of the sealing sleeve abuts against the impeller, the groove abuts against the shaft shoulder, and an arcuate sealing channel is formed between the other end of the sealing sleeve and the sealing body.

5. The carbon black air blower according to claim 4, characterized in that: The impeller is fixedly connected to the transmission shaft via a connecting piece, and the connecting piece is arranged to extend along the axial direction of the transmission shaft.

6. The carbon black air blower according to claim 1, characterized in that: A first groove is provided in the sealing body at one end close to the sealing sleeve, the inner wall of the first groove and the outer wall of the transmission shaft form an annular air cavity, and the sealing body is further provided with a protective air interface connected to the annular air cavity.

7. The carbon black air blower according to claim 1, characterized in that: A second groove is formed at one end of the sealing body away from the sealing sleeve. The inner wall of the second groove and the outer wall of the transmission shaft form a packing cavity. A sealing packing is arranged in the packing cavity.

8. The carbon black air blower according to claim 7, characterized in that: The carbon black air blower also includes a sealing gland, which is arranged at the end of the sealing body away from the sealing sleeve.

9. A carbon black pneumatic conveying system, characterized in that: The carbon black air delivery system comprises a motor and the carbon black air delivery blower according to any one of claims 1 to 8, and the motor is transmission-connected to the transmission shaft.

10. The carbon black pneumatic conveying system according to claim 9, characterized in that: The carbon black air delivery system also includes a bearing box and a coupling. The bearing box is arranged between the carbon black air delivery blower and the coupling, and the coupling is arranged between the bearing box and the motor.

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