Pneumatic conveying pipe group and pneumatic conveying device

Abstract

The utility model belongs to the technical field of pneumatic conveying equipment, and provides a pneumatic conveying pipe group and a pneumatic conveying device, which comprise a conveying main pipe, an auxiliary conveying mechanism communicated with the conveying main pipe is arranged on the side of the conveying main pipe, and the auxiliary conveying mechanism comprises an auxiliary air pipe arranged on the side of the conveying main pipe. The auxiliary air pipe is communicated with the conveying main pipe through a connecting pipe, and the air outlet direction of the connecting pipe inclines in the material conveying direction. The conveying device has the advantages that high-pressure gas can be injected into the conveying main pipe from the side of the conveying main pipe through the auxiliary conveying mechanism to assist in conveying materials in the conveying main pipe, specifically, the auxiliary air pipe is connected with the air blowing mechanism, and the auxiliary air pipe introduces the high-pressure gas into the conveying main pipe through the connecting pipe to assist in blowing the materials.

Description

Technical Field

[0001] This utility model relates to the technical field of material conveying equipment, specifically to a pneumatic conveying pipe assembly and a pneumatic conveying device. Background Technology

[0002] Pneumatic conveying equipment generally consists of receivers such as throats, nozzles, and transmitters, conveying pipes, air ducts, separators, airlocks, dust collectors, and fans. Based on their operating pressure, pneumatic conveying equipment can be divided into two main categories: suction conveying and pressure conveying.

[0003] Existing pneumatic conveying pipe devices using blowing technology typically employ a single flat pipe for conveying. This places a significant load on the front-end fan and other components for long-distance conveying and can easily lead to material accumulation, making them unsuitable for long-distance transport. Utility Model Content

[0004] The main utility model concept of this application is to achieve material conveying over long distances without excessively increasing the fan load, while minimizing pipeline blockage.

[0005] Therefore, the first aspect of this application provides a pneumatic conveying pipe assembly, including a main conveying pipe, an auxiliary conveying mechanism connected to the side of the main conveying pipe, the auxiliary conveying mechanism including an auxiliary air pipe disposed on the side of the main conveying pipe, the auxiliary air pipe being connected to the main conveying pipe through a connecting pipe, and the air outlet direction of the connecting pipe being inclined in the direction of material conveying.

[0006] By adopting the above technical solution: high-pressure gas can be injected into the conveying main pipe from the side through the auxiliary conveying mechanism to assist in conveying the material inside the conveying main pipe. Specifically, the auxiliary air pipe is connected to the blower mechanism, and high-pressure gas is introduced into the conveying main pipe through the connecting pipe to assist in blowing the material.

[0007] As a preferred technical solution of this application, the connecting pipe is provided with a material blocking mechanism or a pushing anti-blocking mechanism.

[0008] By adopting the above technical solution: the material blocking mechanism can prevent the material from flowing back into the auxiliary air pipe, and the push anti-blocking mechanism can further assist in pushing the material and prevent the material from accumulating inside the conveying main pipe.

[0009] As a preferred technical solution of this application, the connecting pipe is provided with an arc-shaped airflow shroud at the inner end of the conveying main pipe, and the inner arc of the arc-shaped airflow shroud faces the material conveying direction.

[0010] By adopting the above technical solution, the airflow entering the conveying main pipe through the connecting pipe can be guided by setting an arc-shaped airflow hood, so that it follows the material conveying direction as much as possible, thereby facilitating the blowing of materials.

[0011] As a preferred technical solution of this application, the material blocking mechanism includes a material blocking plate with fine holes disposed inside the connecting pipe.

[0012] By adopting the above technical solution: by setting a baffle plate with fine holes, the airflow can enter the conveying main pipe through the baffle plate, and the particulate material inside the conveying main pipe cannot enter the connecting pipe and auxiliary air pipe due to the blocking effect of the baffle plate.

[0013] As a preferred technical solution of this application, the connecting pipe includes a straight pipe section and an enlarged diameter section, and the pushing anti-blocking mechanism includes a pneumatic component disposed in the straight pipe section and a pushing component connected to the pneumatic component.

[0014] By adopting the above technical solution, the airflow in the straight pipe section can be used to drive the pneumatic components to move, and the pneumatic components drive the pushing components to move, assisting in pushing the material inside the conveying pipe.

[0015] As a preferred technical solution of this application, the pneumatic assembly includes a pneumatic block slidably disposed inside the straight tube section, and one end of the pneumatic block is connected to the inner wall of the auxiliary air tube through an elastic element.

[0016] By adopting the above technical solution: when the airflow enters from the inside of the auxiliary air pipe into the inside of the connecting pipe, it pushes the pneumatic block to move to one side of the conveying main pipe, thereby driving the pushing component to push the material. When the pneumatic block reaches the expansion section, the airflow enters the inside of the conveying main pipe and blows the material together. At this time, the airflow pressure inside the auxiliary air pipe can be reduced. Under the pulling force of the elastic element, the pneumatic block can return to its original position. At this time, the air pressure inside the auxiliary air pipe is increased, and the pushing component is driven to push the material intermittently as above.

[0017] As a preferred technical solution of this application, the pushing assembly includes a push rod connected to the other side of the pneumatic block, and the end of the push rod is provided with a flexible material-pulling piece.

[0018] By adopting the above technical solution: when the pneumatic block moves towards the conveying main pipe, it drives the push rod to move towards the conveying main pipe, thereby pushing the flexible material pusher into the conveying main pipe. When the flexible material pusher contacts the arc-shaped airflow cover, it bends in the direction of material conveying, thereby creating a pushing effect.

[0019] As a preferred technical solution of this application, one auxiliary air tube is provided on each side of the lower middle part of the main delivery tube.

[0020] By adopting the above technical solution: the material is usually pushed in the lower middle part of the conveying main pipe. By setting an auxiliary air pipe in the lower middle part of each side of the conveying main pipe, the material can be assisted in blowing. At the same time, the material conveying efficiency is further improved by setting a pushing and anti-blocking mechanism inside the connecting pipe.

[0021] In a second aspect, this application provides a pneumatic conveying device, including a feeding mechanism, a discharging mechanism, and the aforementioned pneumatic conveying pipe assembly connected between the feeding mechanism and the discharging mechanism, and further including a blower mechanism for inputting high-pressure gas into the pneumatic conveying pipe assembly, the blower mechanism being disposed upstream of the connection between the conveying main pipe and the feeding mechanism.

[0022] As a preferred technical solution of this application, the blower mechanism is connected to the main delivery pipe through the main air pipe, and the main air pipe is provided with a first solenoid valve. The blower mechanism is connected to the auxiliary air pipe through the branch air pipe, and the branch air pipe is provided with a second solenoid valve.

[0023] By adopting the above technical solution, high-pressure gas is blown into the conveying main pipe and auxiliary air pipe through the blower mechanism, the material inside the conveying main pipe can be blown. At the same time, by intermittently introducing airflow into the auxiliary air pipe, the material inside the conveying main pipe can also be pneumatically pushed, thereby improving the conveying efficiency and preventing blockage of the conveying main pipe.

[0024] The working principle and beneficial effects of this application are as follows:

[0025] 1. In this application, a high-pressure gas can be injected into the conveying main pipe from the side through an auxiliary conveying mechanism to assist in conveying the material inside the conveying main pipe. Specifically, the auxiliary gas pipe is connected to the blower mechanism, and the auxiliary gas pipe introduces high-pressure gas into the conveying main pipe through a connecting pipe to assist in blowing the material.

[0026] 2. When the airflow enters from the inside of the auxiliary air pipe into the inside of the connecting pipe, it pushes the pneumatic block to move towards one side of the main conveying pipe, thereby driving the pushing component to push the material. When the pneumatic block reaches the expansion section, the airflow enters the inside of the main conveying pipe and blows the material together. At this time, the airflow pressure inside the auxiliary air pipe can be reduced. Under the pulling force of the elastic element, the pneumatic block can return to its original position. At this time, the air pressure inside the auxiliary air pipe is increased, and the pushing component is driven to push the material intermittently as above.

[0027] 3. By using a blower mechanism to deliver high-pressure gas into the main conveying pipe and auxiliary air pipe, the material inside the main conveying pipe can be blown. At the same time, by intermittently introducing airflow into the auxiliary air pipe, the material inside the main conveying pipe can also be pneumatically pushed, thereby improving conveying efficiency and preventing blockage of the main conveying pipe. Attached Figure Description

[0028] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the outer top view of Embodiment 1 of this application;

[0030] Figure 2 This is a schematic diagram of the internal connectivity structure of Embodiment 1 of this application;

[0031] Figure 3 This is a schematic diagram of the internal interconnection structure (with a material blocking mechanism) of Embodiment 1 of this application.

[0032] Figure 4 This is a schematic diagram of the internal connection structure of Embodiment 2 of this application (with a push anti-blocking mechanism);

[0033] Figure 5 This is Embodiment Two of this application. Figure 4 Enlarged structural diagram at point A in the middle;

[0034] Figure 6 This is a cross-sectional structural schematic diagram of Embodiment 2 of this application;

[0035] Figure 7 This is a schematic diagram of the pneumatic conveying device according to an embodiment of this application.

[0036] The technical features in the attached figures are labeled as follows:

[0037] 100. Main conveying pipe; 200. Auxiliary air pipe; 300. Connecting pipe; 310. Straight pipe section; 320. Expanding section; 400. Material blocking mechanism; 500. Pushing and anti-blocking mechanism; 510. Pneumatic block; 520. Elastic element; 530. Push rod; 540. Flexible material feeding plate; 600. Arc-shaped airflow cover; 710. Feeding mechanism; 720. Discharging mechanism; 730. Blowering mechanism; 740. Main air pipe; 750. Distribution air pipe. Detailed Implementation

[0038] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0039] Example 1

[0040] Reference Figures 1-3Specifically, in the first aspect of this embodiment, a pneumatic conveying pipe assembly is provided, including a main conveying pipe 100. An auxiliary conveying mechanism is provided on the side of the main conveying pipe 100 and communicates with it. The auxiliary conveying mechanism includes an auxiliary air pipe 200 disposed on the side of the main conveying pipe 100. The auxiliary air pipe 200 is communicated with the main conveying pipe 100 through a connecting pipe 300. The air outlet direction of the connecting pipe 300 is inclined in the direction of material conveying.

[0041] The basic principle of this embodiment is as follows: High-pressure gas can be injected into the conveying main pipe 100 from the side through the auxiliary conveying mechanism to assist in conveying the material inside the conveying main pipe 100. Specifically, the auxiliary air pipe 200 is connected to the blower mechanism 730. The auxiliary air pipe 200 introduces high-pressure gas into the conveying main pipe 100 through the connecting pipe 300 to assist in blowing the material.

[0042] Reference Figure 3 In order to prevent material from flowing into the auxiliary air pipe 200, this embodiment provides a material blocking mechanism 400 in the connecting pipe 300; specifically, the material blocking mechanism 400 can prevent material from flowing back into the auxiliary air pipe 200.

[0043] In order to guide the airflow entering the conveying main pipe 100 from the auxiliary air pipe 200, an arc-shaped airflow hood 600 is provided at the inner end of the connecting pipe 300 in the conveying main pipe 100. The inner arc of the arc-shaped airflow hood 600 faces the material conveying direction. By setting the arc-shaped airflow hood 600, the airflow entering the conveying main pipe 100 from the connecting pipe 300 can be guided to follow the material conveying direction as much as possible, thereby facilitating the blowing of materials.

[0044] The material blocking mechanism 400 includes a material blocking plate with fine holes disposed inside the connecting pipe 300. By disposing of the material blocking plate with fine holes, airflow can enter the conveying main pipe 100 through the material blocking plate. The particulate material inside the conveying main pipe 100 cannot enter the connecting pipe 300 and the auxiliary air pipe 200 due to the blocking effect of the material blocking plate.

[0045] Reference Figure 7 The second aspect of this embodiment provides a pneumatic conveying device, including a feeding mechanism 710, a discharging mechanism 720, and the aforementioned pneumatic conveying pipe assembly connected between the feeding mechanism 710 and the discharging mechanism 720. It also includes a blower mechanism 730 for inputting high-pressure gas into the pneumatic conveying pipe assembly. The blower mechanism 730 is located upstream of the connection between the conveying main pipe 100 and the feeding mechanism 710.

[0046] The blower mechanism 730 is connected to the conveying main pipe 100 through the main air pipe 740, and the main air pipe 740 is equipped with a first solenoid valve. The blower mechanism 730 is connected to the auxiliary air pipe 200 through the branch air pipe 750, and the branch air pipe 750 is equipped with a second solenoid valve.

[0047] By using the blower mechanism 730 to pass high-pressure gas into the conveying main pipe 100 and the auxiliary air pipe 200, the material inside the conveying main pipe 100 can be blown. At the same time, by intermittently passing airflow into the auxiliary air pipe 200, the material inside the conveying main pipe 100 can also be pneumatically pushed, thereby improving the conveying efficiency and preventing blockage of the conveying main pipe 100.

[0048] In Example 2, the material blocking mechanism 400 of Example 1 is replaced with a pushing and anti-blocking mechanism 500, which can further assist in pushing materials.

[0049] Reference Figures 4-6 To this end, the first aspect of this embodiment provides a pneumatic conveying pipe assembly, including a main conveying pipe 100. An auxiliary conveying mechanism is provided on the side of the main conveying pipe 100 and communicates with it. The auxiliary conveying mechanism includes an auxiliary air pipe 200 disposed on the side of the main conveying pipe 100. The auxiliary air pipe 200 is communicated with the main conveying pipe 100 through a connecting pipe 300. The air outlet direction of the connecting pipe 300 is inclined in the direction of material conveying.

[0050] The basic principle of this embodiment is as follows: High-pressure gas can be injected into the conveying main pipe 100 from the side through the auxiliary conveying mechanism to assist in conveying the material inside the conveying main pipe 100. Specifically, the auxiliary air pipe 200 is connected to the blower mechanism 730. The auxiliary air pipe 200 introduces high-pressure gas into the conveying main pipe 100 through the connecting pipe 300 to assist in blowing the material.

[0051] In order to push the material into the auxiliary air pipe 200 and push the material into the conveying main pipe 100, this embodiment provides a pushing and anti-blocking mechanism 500 in the connecting pipe 300, which can push the material into the conveying main pipe 100, play an auxiliary feeding role, and prevent the material from accumulating inside the conveying main pipe 100.

[0052] Reference Figure 5 In order to guide the airflow entering the conveying main pipe 100 from the auxiliary air pipe 200, an arc-shaped airflow hood 600 is provided at the inner end of the connecting pipe 300 in the conveying main pipe 100. The inner arc of the arc-shaped airflow hood 600 faces the material conveying direction. By setting the arc-shaped airflow hood 600, the airflow entering the conveying main pipe 100 from the connecting pipe 300 can be guided to follow the material conveying direction as much as possible, thereby facilitating the blowing of materials.

[0053] Of course, in order to cooperate with the installation of the push anti-blocking mechanism 500, the connecting pipe 300 in this embodiment may include a straight pipe section 310 and an expanded diameter section 320. The push anti-blocking mechanism 500 includes a pneumatic component disposed in the straight pipe section 310 and a pusher component connected to the pneumatic component. The airflow in the straight pipe section 310 can be used to drive the pneumatic component to move, and the pneumatic component drives the pusher component to move, assisting in pushing the material inside the conveying main pipe 100.

[0054] Reference Figure 5 The pneumatic component includes a pneumatic block 510 slidably disposed inside the straight pipe section 310. One end of the pneumatic block 510 is connected to the inner wall of the auxiliary air pipe 200 through an elastic element 520. When the airflow enters from the inside of the auxiliary air pipe 200 into the inside of the connecting pipe 300, it pushes the pneumatic block 510 to one side of the conveying main pipe 100, thereby driving the pushing component to push the material. When the pneumatic block 510 reaches the expansion section 320, the airflow enters the inside of the conveying main pipe 100 and blows the material together. At this time, the airflow pressure inside the auxiliary air pipe 200 can be reduced. Under the pulling force of the elastic element 520, the pneumatic block 510 can return to its original position. At this time, the air pressure inside the auxiliary air pipe 200 is increased, and the pushing component is driven to push the material intermittently as above.

[0055] Reference Figure 5 The material pushing component includes a push rod 530 connected to the other side of the pneumatic block 510. The end of the push rod 530 is provided with a flexible material pushing piece 540. When the pneumatic block 510 moves toward the conveying main pipe 100, it drives the push rod 530 to move toward the conveying main pipe 100, thereby pushing the flexible material pushing piece 540 into the conveying main pipe 100. When the flexible material pushing piece 540 contacts the arc-shaped airflow cover 600, it bends in the material conveying direction, thereby forming a material pushing effect.

[0056] Reference Figure 6 In this embodiment, one auxiliary air pipe 200 is provided on each side of the lower middle part of the conveying main pipe 100. The material is usually pushed in the lower middle part of the conveying main pipe 100. By providing one auxiliary air pipe 200 on each side of the lower middle part of the conveying main pipe 100, the material can be assisted in blowing. At the same time, a pushing anti-blocking mechanism 500 is provided inside the connecting pipe 300 to further improve the efficiency of material conveying.

[0057] Reference Figure 7 The second aspect of this embodiment provides a pneumatic conveying device, including a feeding mechanism 710, a discharging mechanism 720, and the aforementioned pneumatic conveying pipe assembly connected between the feeding mechanism 710 and the discharging mechanism 720. It also includes a blower mechanism 730 for inputting high-pressure gas into the pneumatic conveying pipe assembly. The blower mechanism 730 is located upstream of the connection between the conveying main pipe 100 and the feeding mechanism 710.

[0058] The blower mechanism 730 is connected to the conveying main pipe 100 through the main air pipe 740, and the main air pipe 740 is equipped with a first solenoid valve. The blower mechanism 730 is connected to the auxiliary air pipe 200 through the branch air pipe 750, and the branch air pipe 750 is equipped with a second solenoid valve.

[0059] High-pressure gas is supplied to the conveying main pipe 100 and the auxiliary air pipe 200 through the blower mechanism 730, which can blow the material inside the conveying main pipe 100. At the same time, by controlling the intermittent opening of the second solenoid valve, airflow can be intermittently introduced into the auxiliary air pipe 200 to form a pulse airflow, which can intermittently drive the pneumatic block 510 to push the material and also play an auxiliary role in pushing the material inside the conveying main pipe 100, thereby improving the conveying efficiency and preventing the conveying main pipe 100 from getting blocked.

[0060] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pneumatic conveying pipe assembly, characterized in that, It includes a conveying main pipe (100), and an auxiliary conveying mechanism connected to the side of the conveying main pipe (100). The auxiliary conveying mechanism includes an auxiliary air pipe (200) located on the side of the conveying main pipe (100). The auxiliary air pipe (200) is connected to the conveying main pipe (100) through a connecting pipe (300). The air outlet direction of the connecting pipe (300) is inclined in the direction of material conveying.

2. The pneumatic conveying pipe assembly according to claim 1, characterized in that, The connecting pipe (300) is provided with a material blocking mechanism (400) or a pushing anti-blocking mechanism (500).

3. A pneumatic conveying pipe assembly according to claim 2, characterized in that, The connecting pipe (300) is provided with an arc-shaped airflow hood (600) at the inner end of the conveying main pipe (100), and the inner arc of the arc-shaped airflow hood (600) faces the material conveying direction.

4. A pneumatic conveying pipe assembly according to claim 3, characterized in that, The material blocking mechanism (400) includes a material blocking plate with fine holes disposed inside the connecting pipe (300).

5. A pneumatic conveying pipe assembly according to claim 3, characterized in that, The connecting pipe (300) includes a straight pipe section (310) and an enlarged diameter section (320), and the pushing anti-blocking mechanism (500) includes a pneumatic component disposed in the straight pipe section (310) and a pushing component connected to the pneumatic component.

6. A pneumatic conveying pipe assembly according to claim 5, characterized in that, The pneumatic assembly includes a pneumatic block (510) slidably disposed inside the straight tube section (310), one end of which is connected to the inner wall of the auxiliary air tube (200) via an elastic element (520).

7. A pneumatic conveying pipe assembly according to claim 6, characterized in that, The feeding assembly includes a push rod (530) connected to the other side of the pneumatic block (510), and the end of the push rod (530) is provided with a flexible feeding piece (540).

8. A pneumatic conveying pipe assembly according to claim 1, characterized in that, The auxiliary air tube (200) is provided on each side of the lower middle part of the main delivery tube (100).

9. A pneumatic conveying device, characterized in that, The device includes a feeding mechanism (710), a discharging mechanism (720), and a pneumatic conveying pipe assembly as described in any one of claims 1-8 connected between the feeding mechanism (710) and the discharging mechanism (720), and further includes a blower mechanism (730) for inputting high-pressure gas into the pneumatic conveying pipe assembly, the blower mechanism (730) being located upstream of the connection between the conveying main pipe (100) and the feeding mechanism (710).

10. A pneumatic conveying device according to claim 9, characterized in that, The blower mechanism (730) is connected to the conveying pipe (100) through the main air pipe (740). The main air pipe (740) is equipped with a first solenoid valve. The blower mechanism (730) is connected to the auxiliary air pipe (200) through the branch air pipe (750). The branch air pipe (750) is equipped with a second solenoid valve.

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