Pneumatic conveying device

Abstract

The utility model discloses a pneumatic conveying device, and relates to the technical field of material conveying. Comprising a material hopper and a material conveying pipe, a plurality of middle hoppers are arranged at the bottom of the material hopper, the material hopper and the middle hoppers are fixedly communicated through first material pipes, and first material valves are connected to pipe bodies of the first material pipes; a bottom hopper is arranged at the bottom of the middle hopper, the middle hopper and the bottom hopper are fixedly communicated through a second material pipe, and a pipe body of the second material pipe is connected with a second material valve; and the bottom hopper is fixedly communicated with the material conveying pipe through a third material pipe. According to the utility model, the middle hopper, the bottom hopper, the pressurizing header pipe, the pressurizing branch pipes, the plurality of material valves and the plurality of air pumps are arranged, and the air pumps, the material valves and the electromagnetic valves on the sides of the middle hopper at the corresponding positions are controlled through the controller, so that materials in the middle hopper can continuously enter the bottom hopper and are finally conveyed through the material conveying pipe; and therefore, continuous material conveying is achieved, and the material conveying efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, in particular to a pneumatic conveying device. Background Art

[0002] In the prior art, pneumatic conveying devices are mainly used for transporting granular dust materials, and the dust particles are transported by generating pressure through gas.

[0003] Chinese utility model patent, authorization announcement number CN 219669514 U discloses a pneumatic conveying device, including a pressurized bin, which is equipped with a pressurizing device. The pressurizing device can realize intermittent pressurized conveying of materials, which can effectively reduce the blockage and accumulation of materials in the pressurized bin and the pneumatic conveying pipe. The deposited materials can be lifted by pulsed intermittent pressurized air, and then the materials can be conveyed out with the help of the blowing device to reduce the deposition of materials. In addition, a pressurized elbow is designed in the device, and the materials fall into the pressurized elbow. The position of the materials is fixed, which is conducive to the pressurization of the pressurized bin. The materials in the pressurized elbow are fired out like "bullets", and the transportation pressure is sufficient to ensure smooth transportation.

[0004] The above solution solves the technical problems raised in the background technology, but in practical applications, the above solution still has certain defects, such as:

[0005] The above device realizes intermittent pressurized conveying of materials through a pressurizing device to reduce the blockage and accumulation of materials in the pressurized bin and the pneumatic conveying pipe. Due to the intermittent material feeding, the material conveying efficiency is low, which reduces the production efficiency. Utility Model Content

[0006] The purpose of the utility model is to provide a pneumatic conveying device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a pneumatic conveying device, including a material hopper and a material conveying pipe, and also comprising:

[0008] Several middle buckets are arranged at the bottom of the material bucket;

[0009] A first material pipe, the first material pipe is fixedly connected with the material hopper and the middle hopper;

[0010] A first material valve, the first material valve is connected to a pipe body of a first material pipe;

[0011] A bottom bucket, which is arranged at the bottom of the middle bucket;

[0012] A second material pipe, the second material pipe is fixedly connected to the middle bucket and the bottom bucket;

[0013] A second material valve, the second material valve is connected to a pipe body of a second material pipe;

[0014] A third material pipe, the third material pipe is fixedly connected to the bottom bucket and the material conveying pipe;

[0015] The gas conveying pipe and the boosting main pipe are arranged on one side of the material conveying pipe;

[0016] A first air pump and a second air pump, wherein the first air pump and the second air pump are respectively connected to the pipe body of the air delivery pipe and the boost main pipe;

[0017] The gas conveying pipe is fixedly connected with the material conveying pipe;

[0018] Multiple boost branch pipes, one end of each of which is fixedly connected to the pipe body of the boost main pipe, and the other end of each of which is fixedly connected to the middle bucket;

[0019] Solenoid valve, the solenoid valve is connected to the pipe body of the boost branch pipe.

[0020] Preferably, the material conveying pipe is parallel to the ground, and the third material pipe and the material conveying pipe are perpendicular to each other.

[0021] Preferably, the ends of the air delivery pipe and the boost main pipe are fixedly connected to an air filter for filtering the air.

[0022] Preferably, the number of the middle buckets is set to two.

[0023] Preferably, the power of the second air pump is greater than the power of the first air pump.

[0024] Preferably, an inverted U-shaped bend is formed on the pipe body of the gas conveying pipe on the side close to the material conveying pipe.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] The pneumatic conveying device is provided with a middle bucket, a bottom bucket, a boost main pipe, a boost branch pipe, multiple material valves and multiple air pumps. The air pump, material valve and solenoid valve on one side of the middle bucket at the corresponding position are controlled by a controller, so that the material in the middle bucket can continuously enter the bottom bucket and is finally transported through the material conveying pipe, thereby realizing uninterrupted material transportation and effectively improving the material transportation efficiency.

[0027] At the same time, the material conveying pipe is parallel to the ground, the third material pipe and the material conveying pipe are perpendicular to each other, and the air conveying pipe is located on one side of the material conveying pipe. This arrangement facilitates the material in the bottom bucket to directly enter the material conveying pipe, effectively preventing the material from accumulating in the third material pipe. In addition, since the material conveying pipe body has no corners, the material is not easy to accumulate, and the material in the material conveying pipe can be blown through the air conveying pipe, effectively preventing the material from being blocked in the material conveying pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a left side axial view of the utility model;

[0029] Figure 2 It is a right side axial view of the utility model;

[0030] Figure 3 This is a detailed view of the gas delivery pipe of the utility model.

[0031] In the figure: 1. material hopper; 101. first material pipe; 102. first material valve; 2. middle hopper; 201. second material pipe; 202. second material valve; 3. bottom hopper; 301. third material pipe; 4. material conveying pipe; 5. air conveying pipe; 501. first air pump; 502. inverted U-shaped bend pipe; 6. boost main pipe; 601. second air pump; 602. boost branch pipe; 603. solenoid valve; 7. air filter. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a pneumatic conveying device, including a material hopper 1 for holding materials, a material conveying pipe 4 for material conveying and a controller, a plurality of middle hoppers 2 are arranged at the bottom of the material hopper 1, the material hopper 1 and the middle hopper 2 are fixedly connected through a first material pipe 101, and a first material valve 102 is connected to the tube body of the first material pipe 101. In a specific embodiment of the present scheme, the number of the middle hoppers 2 is set to two. After opening the first material valve 102, material particles enter the middle hopper 2 through the material hopper 1 and the first material pipe 101.

[0034] A bottom bucket 3 is arranged at the bottom of the middle bucket 2, and the middle bucket 2 and the bottom bucket 3 are fixedly connected via a second material pipe 201, a second material valve 202 is connected to the tube body of the second material pipe 201, and after the second material valve 202 is opened, the material in the middle bucket 2 enters the bottom bucket 3 via the second material pipe 201.

[0035] The bottom bucket 3 and the material conveying pipe 4 are fixedly connected through the third material pipe 301. In this solution, the material conveying pipe 4 is parallel to the ground, and the third material pipe 301 and the material conveying pipe 4 are perpendicular to each other. This arrangement facilitates the material in the bottom bucket 3 to directly enter the material conveying pipe 4, and effectively prevents the material from accumulating in the third material pipe 301.

[0036] An air conveying pipe 5 and a boosting main pipe 6 are provided on one side of the material conveying pipe 4. A plurality of boosting branch pipes 602 are fixedly connected to the pipe body of the boosting main pipe 6. The other end of the boosting branch pipe 602 is fixedly connected to the middle bucket 2. An electromagnetic valve 603 is connected to the pipe body of the boosting branch pipe 602. The air conveying pipe 5 is fixedly connected to the material conveying pipe 4. The air conveying pipe 5 and the pipe body of the boosting main pipe 6 are respectively connected to the first air pump 501 and the second air pump 601. The power of the second air pump 601 is greater than the power of the first air pump 501. In a specific embodiment of the present scheme, the power of the second air pump 601 is greater than twice the power of the first air pump 501, thereby ensuring that when the electromagnetic valves 603 are opened sequentially, the pressure in the middle bucket 2 is greater than the pressure of the air conveying pipe 5, avoiding material backflow and facilitating the material to enter the material conveying pipe 4.

[0037] In order to prevent impurities in the outside air from entering the conveying device and thus contaminating the material, in another specific embodiment of the present scheme, an air filter 7 for filtering the air is fixedly connected at the ends of the air conveying pipe 5 and the boost main pipe 6. The air filter 7 filters the air through a filter net arranged inside it. This is a mature prior art and its structure will not be described in detail in this scheme.

[0038] In addition, in order to prevent material particles from entering the air conveying pipe 5 and thereby blocking the air conveying pipe 5 , in this solution, an inverted U-shaped bend 502 is formed on the air conveying pipe 5 body close to the material conveying pipe 4 .

[0039] To supplement this solution, when in use, the controller controls the second material valve 202 and the two air pumps to close, and the material in the material hopper 1 enters the two middle hoppers 2 through the first material pipe 101. When the material in the middle hopper 2 is filled to a certain amount, the controller controls the two air pumps to start, controls the first material valve 102 of the middle hopper 2 on one side to close, controls the second material valve 202 and the solenoid valve 603 on this side to open, and controls the first material valve 102 and the second material valve 202 of the middle hopper 2 on the other side to close, and the material enters the material conveying pipe 4 through the second material pipe 201, the bottom hopper 3 and the third material pipe 301, and the air conveying pipe 5 is used to blow the material with high-pressure gas, thereby conveying the material out through the material conveying pipe 4. When the material in the middle bucket 2 on this side is lower than the set amount (which can be monitored in real time by a photoelectric sensor or other monitoring equipment arranged in the middle bucket 2), the controller controls the first material valve 102 on this side to open, and controls the second material valve 202 and the solenoid valve 603 on this side to close, so as to replenish the material in the middle bucket 2 on this side. At the same time, the controller controls the first material valve 102 of the middle bucket 2 on the other side to close, and controls the second material valve 202 and the solenoid valve 603 on the other side to open, so as to finally realize uninterrupted material conveying and effectively improve the material conveying efficiency.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A pneumatic conveying device, comprising a material hopper (1) and a material conveying pipe (4), characterized in that: Also includes: A plurality of middle buckets (2), wherein the plurality of middle buckets (2) are arranged at the bottom of the material bucket (1); A first material pipe (101), the first material pipe (101) is fixedly connected to the material hopper (1) and the middle hopper (2); A first material valve (102), the first material valve (102) being connected to a pipe body of the first material pipe (101); A bottom bucket (3), the bottom bucket (3) being arranged at the bottom of the middle bucket (2); A second material pipe (201), wherein the second material pipe (201) is fixedly connected to the middle bucket (2) and the bottom bucket (3); A second material valve (202), the second material valve (202) being connected to a pipe body of the second material pipe (201); A third material pipe (301), the third material pipe (301) is fixedly connected to the bottom bucket (3) and the material conveying pipe (4); An air conveying pipe (5) and a boosting main pipe (6), wherein the air conveying pipe (5) and the boosting main pipe (6) are arranged on one side of the material conveying pipe (4); A first air pump (501) and a second air pump (601), wherein the first air pump (501) and the second air pump (601) are respectively connected to the pipe bodies of the air delivery pipe (5) and the boost main pipe (6); The gas conveying pipe (5) is fixedly connected to the material conveying pipe (4); A plurality of boost branch pipes (602), one end of each of the plurality of boost branch pipes (602) being fixedly connected to the pipe body of the boost main pipe (6), and the other end of each of the boost branch pipes (602) being fixedly connected to the middle bucket (2); A solenoid valve (603), wherein the solenoid valve (603) is connected to the pipe body of the boost branch pipe (602).

2. The pneumatic conveying device according to claim 1, characterized in that: The material conveying pipe (4) is parallel to the ground, and the third material pipe (301) and the material conveying pipe (4) are perpendicular to each other.

3. The pneumatic conveying device according to claim 1, characterized in that: The ends of the air delivery pipe (5) and the boost main pipe (6) are fixedly connected to an air filter (7) for filtering air.

4. The pneumatic conveying device according to claim 1, characterized in that: The number of the middle buckets (2) is set to two.

5. The pneumatic conveying device according to claim 4, characterized in that: The power of the second air pump (601) is greater than the power of the first air pump (501).

6. The pneumatic conveying device according to claim 1, characterized in that: An inverted U-shaped bend (502) is formed on the pipe body of the gas conveying pipe (5) close to the side of the material conveying pipe (4).

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