Pneumatic conveying device

Abstract

The utility model discloses a pneumatic conveying device. The technical problem that a conveying device in the prior art is prone to being blocked is solved. The pneumatic conveying device comprises a discharging bin, a connecting mechanism, an air supply mechanism and a discharging end, the connecting mechanism comprises a connecting elbow and a connecting box, the connecting elbow comprises a first end and a second end, the first end is used for being communicated with the discharging port, the axis of the first end and the axis of the second end are arranged at an angle, and the connecting elbow is further provided with an opening; the connecting box is arranged at the opening and connected with the connecting elbow, the two ends of the connecting box are open, and the axis of the connecting box and the axis of the first end are arranged at an angle; the air supply mechanism comprises an air supply end and an air pipe communicated with the air supply end, the air pipe extends into the connecting box, at least part of the air pipe extends into the connecting elbow, and the air pipe is connected with the connecting box; and the discharging end is communicated with the second end of the connecting elbow. According to the pneumatic conveying device, the air volume is adjusted through the length of the air pipe extending into the connecting elbow, so that material conveying is achieved, and material conveying blockage is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of conveying devices, and particularly relates to a pneumatic conveying device. BACKGROUND

[0002] With the development of electrolytic aluminum smelting technology, in the production of primary aluminum electrolysis, alumina is used as the main raw material for aluminum electrolysis. In the process of packaging and delivery, alumina is mainly transported to the packaging machine through a conveying device. In the transportation process, the conveying device needs to be used for long-distance transmission. In the prior art, the conveying of alumina is usually driven by gas. The power of the gas driving is mainly derived from a Roots blower or compressed air. When the alumina is conveyed by the power provided by the Roots blower or compressed air, although the alumina moves in the pipeline, the conveying capacity is small, the energy consumption is high, and the pipeline is easy to be blocked. Therefore, the alumina is prone to not moving in the long-distance pipeline and is prone to being blocked. SUMMARY

[0003] To solve the above technical problems, the application provides a pneumatic conveying device.

[0004] The technical scheme adopted to achieve the purpose of the application is a pneumatic conveying device, which comprises:

[0005] A discharging bin is provided with a discharging port.

[0006] A connecting mechanism comprises a connecting elbow and a connecting box. The connecting elbow comprises oppositely arranged first and second ends, wherein the first end is used for communicating with the discharging port, the axis of the first end and the axis of the second end are arranged at an angle, and the connecting elbow is further provided with an opening. The connecting box is arranged at the opening of the connecting elbow and is connected with the connecting elbow. Both ends of the connecting box are open, and the axis of the connecting box is arranged at an angle with the axis of the first end.

[0007] An air supply mechanism comprises an air supply end and an air pipe in communication with the air supply end. The air pipe extends into the connecting box and at least partially extends into the connecting elbow. The air pipe is connected with the connecting box.

[0008] A discharging end is in communication with the second end of the connecting elbow.

[0009] In some embodiments, the axis of the connecting box is parallel to the axis of the second end of the connecting elbow.

[0010] In some embodiments, the axis of the first end of the connecting elbow is perpendicular to the axis of the second end of the connecting elbow.

[0011] The connecting box is coaxially arranged with the second end of the connecting elbow.

[0012] In some embodiments, the inner diameter of the first end of the connecting elbow is larger than the inner diameter of the second end of the connecting elbow.

[0013] In some embodiments, the pipe body of the air pipe is a hose.

[0014] The connecting mechanism further comprises a connecting assembly, and the air pipe is detachably connected with the connecting box through the connecting assembly.

[0015] In some embodiments, the connecting assembly comprises a first connecting disc and a second connecting disc, and the second connecting disc is fixedly connected with the connecting box.

[0016] The first connecting disc is detachably connected with the second connecting disc.

[0017] The first connecting disc is limitingly connected with the air pipe.

[0018] In some embodiments, the first connecting disc and the second connecting disc are coaxially arranged and each is provided with a communication hole, and the air pipe sequentially penetrates through the first connecting disc, the second connecting disc and the connecting box and is connected with the connecting box.

[0019] In some embodiments, the first connecting disc and the second connecting disc are correspondingly provided with connecting holes, and the first connecting disc and the second connecting disc are connected through fasteners penetrating through the connecting holes.

[0020] In some embodiments, the air pipe is limitingly connected with the first connecting disc and the second connecting disc through a sealing member.

[0021] In some embodiments, the connecting box is provided with a first connecting part and a second connecting part with different inner diameters.

[0022] The inner diameter of the first connecting part is larger than the inner diameter of the second connecting part, and the inner diameter of the second connecting part matches the outer diameter of the air pipe.

[0023] The first connecting part is connected with and communicates with the first connecting disc, and the second connecting part is close to the connecting elbow.

[0024] The inner diameter of the communication hole is the same as the inner diameter of the first connecting part.

[0025] The sealing member is arranged in the gap between the first connecting disc and the air pipe and the gap between the second connecting disc and the air pipe.

[0026] According to the technical scheme, the pneumatic conveying device comprises a feeding bin, a connecting mechanism, a blowing mechanism and a discharging end, the feeding bin is provided with a feeding opening; the connecting mechanism comprises a connecting elbow and a connecting box, the connecting elbow comprises oppositely arranged first and second ends, wherein the first end is used for being communicated with the discharging opening, the axis of the first end and the axis of the second end are arranged at an angle, and the connecting elbow is further provided with an opening; the connecting box is arranged at the opening of the connecting elbow and connected with the connecting elbow, both ends of the connecting box are open, and the axis of the connecting box is arranged at an angle with the axis of the first end; the blowing mechanism comprises a blowing end and a wind pipe communicated with the blowing end, the wind pipe extends into the connecting box and at least partially extends into the connecting elbow, and the wind pipe is connected with the connecting box; and the discharging end is communicated with the second end of the connecting elbow. The pneumatic conveying device is provided with the connecting mechanism, the air volume of the blowing mechanism can enter the connecting elbow through the opening of the connecting elbow and the wind pipe, the material falls into the connecting elbow from the feeding bin during the material conveying process, the air volume of the blowing mechanism is combined with the material, and the combination of the material and the power is equivalent to the combination of the material and the power. The air volume is sent into the wind pipe to provide power for the material conveying, the material is sent out through the discharging end, in addition, the length of the wind pipe extending into the connecting elbow can be adjusted to adjust the size of the air volume, so that the material is balanced and driven to advance and convey, long-distance conveying of the material is realized, and blockage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 1 is a structural schematic diagram of a pneumatic conveying device in an embodiment of the present application.

[0028] Figure 2 FIG. 2 is a structural schematic diagram of a connecting mechanism of the pneumatic conveying device of FIG. 1. Figure 1

[0029] Figure 3 FIG. 6 is a sectional view of a connecting box of the connecting mechanism of FIG. 2. Figure 1

[0030] Figure 4 FIG. 9 is a side view of a first connecting disc of the connecting mechanism of FIG. 2. Figure 1

[0031] Figure 5 FIG. 11 is a side view of the first connecting disc and a filler box of the connecting mechanism of FIG. 2. Figure 1

[0032] Reference signs: 100-pneumatic conveying device, 110-feeding bin, 120-connecting mechanism, 121-connecting elbow, 122-connecting box, 1221-first connecting part, 1222-second connecting part, 123-connecting assembly, 1231-first connecting disc, 1232-second connecting disc, 1233-fastener, 1234-sealing element, 1235-connecting hole, 1236-communication hole, 130-blowing mechanism, 131-blowing end, 132-wind pipe, 140-discharging end, 150-feeding end, 160-dust suction pipeline, 170-valve.​​​​ DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to which this application belongs to understand this application more clearly, the technical solution of this application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0034] In the embodiments of this application, as shown in the attached Figure 1 , Attachment Figure 2 As shown, a pneumatic conveying device, the pneumatic conveying device 100 includes a discharge bin 110, a connecting mechanism, an air supply mechanism 130 and a discharge end 140, the discharge bin 110 is provided with a discharge port; the connecting mechanism includes a connecting elbow 121 and a connecting box 122, the connecting elbow 121 includes a first end and a second end that are arranged oppositely, wherein the first end is used to communicate with the discharge port, the axis of the first end and the axis of the second end are arranged at an angle, and the connecting elbow 121 is also provided with an opening; the connecting box 1 22 is arranged at the opening of the connecting elbow 121 and is connected to the connecting elbow 121, both ends of the connecting box 122 are open, and the axis of the connecting box 122 is set at an angle to the axis of the first end; the air supply mechanism 130 includes an air supply end 131 and an air duct 132 connected to the air supply end 131, and the air duct 132 at least partially extends into the connecting box 122 and is connected to the connecting box 122; the discharge end 140 is connected to the second end of the connecting elbow 121; the air supply end 131 is compressed air.

[0035] The air supply end 131 of the present application is compressed air. Compared with the original Roots blower air volume drive, the Roots blower has a large air volume but a small pressure, while the compressed air has a small air volume but a high pressure, and can transport materials over long distances.

[0036] The pneumatic conveying device 100 of the present application is provided with a connecting mechanism 120. The air volume of the air supply mechanism 130 can enter the connecting elbow 121 through the air duct 132 and the opening of the connecting elbow 121. During the material conveying process, the material falls from the lower hopper 110 into the connecting elbow 121. The air volume of the air supply mechanism 130 is combined with the material, which is equivalent to the combination of material and power. The air volume is supplied to the air duct 132 to provide power for material conveying, and the material is discharged through the discharge end 140. In addition, the air volume can be adjusted by adjusting the length of the air duct 132 extending into the connecting elbow 121 to achieve material balance and drive forward conveying.

[0037] As attached Figure 1 , Attachment Figure 2 As shown, in some embodiments, the lower bin 110 is funnel-shaped, wherein the end with the larger opening is connected to the feed end 150, wherein the feed end 150 can be connected to the lower bin 110 through a feed pipe, that is, the material can enter the lower bin 110 through the feed pipe, thereby transporting the material.

[0038] As attached Figure 1 , AttachmentFigure 2 As shown, in order to ensure that the air volume can provide power to transport materials, the axis of the opening is set at an angle to the axis of the first end. Since materials are generally transported from top to bottom, in some embodiments, the axis of the first end of the connecting elbow 121 is vertical, and the axis of the connecting box 122 can be horizontal, that is, when the material is transported from top to bottom to the connecting elbow 121, the air duct 132 extends into the connecting box 122 to provide power in the horizontal direction to blow toward the material, and can provide driving force for the material to be transported to the second end, and then transported through the discharge end 140.

[0039] As attached Figure 1 , Attachment Figure 2 As shown, in some embodiments, the connection box 122 is connected to the opening of the connection elbow 121, and the connection box 122 and the connection elbow 121 can be connected by welding. After the connection box 122 and the connection elbow 121 are connected, the internal cavity of the connection box 122 is connected to the connection elbow 121.

[0040] As attached Figure 1 , Attachment Figure 2 As shown, in some embodiments, the axis of the connection box 122 is parallel to the axis of the second end of the connection elbow 121. By arranging the connection box 122 at the opening of the connection elbow 121 and installing the air duct 132 in the connection box 122, the air flow into the air duct 132 can provide power to the material falling into the connection elbow 121, providing a driving force for the material transportation, ensuring that the material can be transported along the connection elbow 121 to the discharge end 140, and avoiding material blockage.

[0041] As attached Figure 1 , Attachment Figure 2 As shown, in some embodiments, the axis of the first end of the connecting elbow 121 and the axis of the second end of the connecting elbow 121 are perpendicular to each other; the connecting box 122 is coaxially arranged with the second end of the connecting elbow 121. That is, the connecting box 122 is arranged at the opening of the connecting elbow 121, and the air duct 132 is installed in the connecting box 122. The air flow into the air duct 132 can provide power to the material falling into the connecting elbow 121, providing driving force for the material transportation, ensuring that the material can be transported along the connecting elbow 121 to the discharge end 140, and avoiding material blockage.

[0042] As attached Figure 1 , Attachment Figure 2As shown in the drawings, in some embodiments, the inner diameter of the first end of the connecting elbow 121 is larger than the inner diameter of the second end of the connecting elbow 121. That is, when the material falls into the first end of the connecting elbow 121 from the material falling end, the larger inner diameter of the first end helps the material to fall, and through the mixing of the wind power and the material, the smaller inner diameter of the second end drives the material to be conveyed, which is equivalent to pressurization, increases the driving force, and thus performs long-distance conveying. The first end of the connecting elbow 121 can adopt DN150 to connect the alumina feeding end 150, and DN150 generally refers to the nominal diameter of the pipeline. The second end of the connecting elbow 121 can adopt DN80 to connect the discharge pipeline, and the compressed air pipe 132 passes through the connecting box 122, is filled in the connecting box 122 through the asbestos rope, and is sealed by the packing gland to prevent air and material from running. The material balance driving is realized by the air volume.

[0043] As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed. Figure 1 , the drawings, in some embodiments, the connecting assembly 123 includes a first connecting disc 1231 and a second connecting disc 1232, and the second connecting disc 1232 is fixedly connected with the connecting box 122. The first connecting disc 1231 is detachably connected with the second connecting disc 1232, and the first connecting disc 1231 is limitingly connected with the air pipe 132. That is, the air pipe 132 can be detachably connected with the connecting box 122 through the first connecting disc 1231 and the second connecting disc 1232. Figure 2 As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed.

[0044] As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed. Figure 1 , the drawings, in some embodiments, the connecting assembly 123 includes a first connecting disc 1231 and a second connecting disc 1232, and the second connecting disc 1232 is fixedly connected with the connecting box 122. The first connecting disc 1231 is detachably connected with the second connecting disc 1232, and the first connecting disc 1231 is limitingly connected with the air pipe 132. That is, the air pipe 132 can be detachably connected with the connecting box 122 through the first connecting disc 1231 and the second connecting disc 1232. Figure 2 As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed.

[0045] As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed. Figure 1 , the drawings, in some embodiments, the connecting assembly 123 includes a first connecting disc 1231 and a second connecting disc 1232, and the second connecting disc 1232 is fixedly connected with the connecting box 122. The first connecting disc 1231 is detachably connected with the second connecting disc 1232, and the first connecting disc 1231 is limitingly connected with the air pipe 132. That is, the air pipe 132 can be detachably connected with the connecting box 122 through the first connecting disc 1231 and the second connecting disc 1232. Figure 2 As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed.

[0046] As shown in the drawings, in some embodiments, the connecting mechanism further includes a connecting assembly 123, and the air pipe 132 is detachably connected with the connecting box 122 through the connecting assembly 123. That is, the distance of the air pipe 132 extending into the connecting elbow 121 can be adjusted, and then the air pipe 132 is detached and fixed. Figure 1 , the drawings, in some embodiments, the connecting assembly 123 includes a first connecting disc 1231 and a second connecting disc 1232, and the second connecting disc 1232 is fixedly connected with the connecting box 122. The first connecting disc 1231 is detachably connected with the second connecting disc 1232, and the first connecting disc 1231 is limitingly connected with the air pipe 132. That is, the air pipe 132 can be detachably connected with the connecting box 122 through the first connecting disc 1231 and the second connecting disc 1232. Figure 2As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122.

[0047] As shown in the drawings, in some embodiments, in order to avoid material from running out of the gap between the air pipe 132 and the connecting box 122, and at the same time ensure that the air pipe 132 is connected with the first connecting disc 1231, the air pipe 132 is connected with the first connecting disc 1231 and the second connecting disc 1232 by a sealing member 1234. Since there is a gap when the air pipe 132 extends into the connecting box 122, the sealing member 1234 can be arranged at the gap. The sealing member 1234 can be a tape, a cloth strip or the like. When the sealing member 1234 is inserted into the gap, the air pipe 132 can be limited with the first connecting disc 1231 and the second connecting disc 1232, thereby preventing the air pipe 132 from moving horizontally. Figure 1 Figure 2 As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122.

[0048] As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122. Figure 1 Figure 2 As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122.

[0049] As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122. Figure 1 Figure 2 As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122. Figure 3 As shown in the drawings, in some embodiments, the first connecting disc 1231 and the second connecting disc 1232 are coaxially arranged and each is provided with a through hole 1236, and the air pipe 132 penetrates the first connecting disc 1231, the second connecting disc 1232 and the connecting box 122 in sequence and is connected with the connecting box 122. The first connecting disc 1231 and the second connecting disc 1232 serve to connect the air pipe 132 with the connecting box 122, and at the same time ensure that the air pipe 132 can extend into the connecting box 122.​​​

[0050] As attached Figure 4 , Attachment Figure 5 As shown, in some embodiments, the first connection portion 1221 is connected to and communicates with the first connection plate 1231, and the second connection portion 1222 is close to the connection elbow 121. The inner diameter of the communication hole 1236 is the same as the inner diameter of the first connection portion 1221. That is, the inner diameter of the communication hole 1236 of the first connection plate 1231 and the inner diameter of the communication hole 1236 of the second connection plate 1232 both match the maximum inner diameter of the connection box 122. After the air duct 132 extends into the connection box 122, the gap between the air duct 132 and the connection box 122 can be sealed by inserting a seal 1234. That is, the gap between the first connecting plate 1231 and the air duct 132 is stuffed with the seal 1234, which can limit the connection between the first connecting plate 1231 and the air duct 132. Specifically, after the seal 1234 is inserted, the seal 1234 will overflow around the first connecting plate 1231, thereby limiting the air duct 132; the gap between the second connecting plate 1232 and the air duct 132 is stuffed with the seal 1234, which can limit the connection between the second connecting plate 1232 and the air duct 132, and the seal 1234 can overflow into the gap of the connection box 122, thereby forming a seal.

[0051] Therefore, the first connecting plate 1231 and the air duct 132 are fixed by the sealing member 1234, and at the same time, the first connecting plate 1231 and the second connecting plate 1232 are fixedly connected by the fastener 1233 passing through the connecting hole 1235. Since the second connecting plate 1232 is fixedly connected to the connecting box 122, the air duct 132 is connected and fixed to the connecting box 122, wherein the sealing member 1234 is inserted into the gap, and the sealing member 1234 will overflow from the gap, thereby limiting and sealing the air duct 132 and the first connecting plate 1231 or the second connecting plate 1232, thereby limiting the movement of the air duct 132 and ensuring the stability and sealing of the connection between the air duct 132 and the connecting box 122.

[0052] As attached Figure 3 Figure 4 Figure 1 As shown, in some embodiments, the conveying device further includes a dust suction pipe 160 connected to the discharge bin 110 and a valve 170 provided at the discharge port of the discharge bin 110. Thus, the present application allows the material to enter from the discharge end and then enter the discharge bin 110. The discharge bin 110 is also provided with a dust suction pipe 160 for absorbing the dust from the discharge bin 110 to avoid dust, thereby achieving the characteristic of no dust and green environmental protection. When the valve 170 is opened, the material in the discharge bin 110 enters the connecting elbow 121, and the compressed air is pushed by the air duct 132 to send the material falling into the connecting elbow 121 to the discharge end 140, thereby achieving long-distance material transportation.

[0053] Through the above embodiments, the present application has the following beneficial effects or advantages:

[0054] 1) The pneumatic conveying device 100 of the present application is provided with a connecting mechanism 120, the air volume of the air supply mechanism 130 can enter the connecting elbow 121 through the air pipe 132 and the opening of the connecting elbow 121, the material falls into the connecting elbow 121 during the material conveying process, the air volume of the air supply mechanism 130 combines with the material, which is equivalent to the combination of material and power. The air volume is sent into the air pipe 132 to provide power for material conveying, and the material is sent out through the discharge end 140. In addition, the length of the air pipe 132 extending into the connecting elbow 121 can be adjusted to adjust the size of the air volume, so as to realize the balanced driving forward conveying of the material, that is, the reasonable allocation of material and air, which can achieve good transmission effect, effectively improve the air conveying volume, and at the same time complete the reasonable air volume control, thereby reducing the use amount of compressed air and energy consumption, and realizing the improvement of air conveying.

[0055] 2) The pneumatic conveying device 100 of the present application can effectively improve the air conveying volume and has the characteristics of adjustable conveying volume, low energy consumption and the like. The problems of pipeline blockage caused by uneven air volume and material ratio, conveying volume cannot meet production demand, complicated cleaning process and problems existing in use are effectively solved. The device has simple structure, is convenient to clean and maintain, is wear-resistant and high-temperature-resistant, and has high stability.

[0056] 3) The pneumatic conveying device 100 of the present application has low conveying energy consumption, realizes environmental protection standard control in closed transmission, has no dust in the field, greatly reduces personnel labor, has low investment cost and operation cost, simple system structure, small occupation area and no leakage.

[0057] 4) The pneumatic conveying device 100 of the present application can be widely applied to metallurgy, chemical industry, pharmacy, coal and the like, can effectively reduce field dust and environmental protection production investment. At present, the pneumatic conveying device 100 is successfully applied in a fine alumina transmission system, and good economic benefits are obtained, and energy consumption and environmental protection investment cost are greatly reduced.

[0058] Although the preferred embodiments of the present application have been described, those of ordinary skill in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0059] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A pneumatic conveying device, characterized in that: include: The unloading bin is equipped with an unloading port; A connecting mechanism includes a connecting elbow and a connecting box, wherein the connecting elbow includes a first end and a second end disposed opposite each other, wherein the first end is used to communicate with a discharge port, the axis of the first end and the axis of the second end are arranged at an angle, and the connecting elbow is further provided with an opening; the connecting box is disposed at the opening of the connecting elbow and connected to the connecting elbow, both ends of the connecting box are open, and the axis of the connecting box is arranged at an angle to the axis of the first end; An air supply mechanism, comprising an air supply end and an air duct connected to the air supply end, the air duct extending into the connection box and at least partially extending into the connection elbow, the air duct being connected to the connection box; The discharge end is connected to the second end of the connecting elbow.

2. The pneumatic conveying device according to claim 1, characterized in that The axis of the connection box is parallel to the axis of the second end of the connection elbow.

3. The pneumatic conveying device according to claim 2, characterized in that The axis of the first end of the connecting elbow and the axis of the second end of the connecting elbow are perpendicular to each other; The connection box is coaxially arranged with the second end of the connection elbow.

4. The pneumatic conveying device according to any one of claims 1 to 3, characterized in that: The inner diameter of the first end of the connecting elbow is larger than the inner diameter of the second end of the connecting elbow.

5. The pneumatic conveying device according to any one of claims 1 to 3, characterized in that: The pipe body of the air duct is a hose; The connecting mechanism further comprises a connecting assembly, and the air duct is detachably connected to the connecting box via the connecting assembly.

6. The pneumatic conveying device according to claim 5, characterized in that: The connection assembly includes a first connection plate and a second connection plate, wherein the second connection plate is fixedly connected to the connection box; The first connecting plate and the second connecting plate are detachably connected; The first connecting plate is position-limitingly connected to the air duct.

7. The pneumatic conveying device according to claim 6, characterized in that The first connection disk and the second connection disk are coaxially arranged and both have a communication hole. The air duct passes through the first connection disk, the second connection disk and the connection box in sequence and is connected to the connection box.

8. The pneumatic conveying device according to claim 7, characterized in that: The first connecting plate and the second connecting plate are correspondingly provided with connecting holes, and the first connecting plate and the second connecting plate are connected by fasteners passing through the connecting holes.

9. The pneumatic conveying device according to claim 7, characterized in that: The air duct is connected to the first connecting plate and the second connecting plate through a sealing member.

10. The pneumatic conveying device according to claim 9, characterized in that: The connection box is provided with a first connection portion and a second connection portion having different inner diameters; The inner diameter of the first connecting portion is larger than the inner diameter of the second connecting portion, and the inner diameter of the second connecting portion matches the outer diameter of the air duct; The first connecting portion is connected to and communicates with the first connecting plate, and the second connecting portion is close to the connecting elbow; The inner diameter of the communicating hole is the same as the inner diameter of the first connecting portion; The sealing member is arranged in a gap between the first connecting plate and the air duct and in a gap between the second connecting plate and the air duct.

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