Positive-pressure conveying air-return-free device

Abstract

The utility model discloses a positive pressure conveying non-return air device, which relates to the technical field of conveying equipment and comprises a support, a powder pump, a receiving pipe, a discharging pipe and a guider are arranged on the support, the receiving pipe is connected with a feeding port of the powder pump, and the discharging pipe is connected with a discharging port of the powder pump; the guider comprises a conveying pipe, the discharging pipe is communicated with the conveying pipe, one end of the conveying pipe is an air inlet, the other end of the conveying pipe is a discharging port, and one end of the air inlet of the conveying pipe is externally connected with a fan; according to the powder conveying device, powder conveying is completed through the powder pump, the powder conveying device can adapt to large-flow powder conveying, the situation of air return is avoided, the problems that when a Venturi ejector is used for conveying powder, the conveying amount is small, the conveying efficiency is low, the situation of air return frequently occurs in the conveying process of a direct blowing type rotary valve is avoided, the application scene is wider, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a positive pressure conveying device without return air. Background Art

[0002] In the process of production and processing, powder transportation is often involved. Commonly used powder transportation devices mainly use Venturi ejectors or direct-blowing rotary valves to achieve powder transportation.

[0003] Among them, the Venturi ejector has a small powder delivery volume and low delivery efficiency, while the direct-blowing rotary valve often has air return during delivery, which affects the delivery of powder.

[0004] In view of this, there is an urgent need for a powder conveying device with large conveying capacity and no return air. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A positive pressure conveying device without return air comprises: a bracket, on which a powder pump, a material receiving pipe, a material discharging pipe and a guide are arranged, the material receiving pipe is connected to the material inlet of the powder pump, and the material discharging pipe is connected to the material outlet of the powder pump;

[0008] The guide comprises a conveying pipe, the discharge pipe is connected with the conveying pipe, one end of the conveying pipe is an air inlet, and the other end is a discharge port, and one end of the air inlet of the conveying pipe is externally connected to a fan.

[0009] A further feature is that

[0010] The guide device also includes an L-shaped guide pipe, one end of which is connected to the discharge end of the discharge pipe, and the other end extends into the conveying pipe. The discharge port of the guide pipe faces the discharge port of the conveying pipe.

[0011] The suspended end of the flow guide pipe extending into the delivery pipe is coaxially arranged with the delivery pipe.

[0012] The delivery pipe is a three-way pipe, and flanges are arranged at the interfaces of the three-way pipe.

[0013] The conveying pipe is arranged below the powder pump, and the discharge pipe is located above the conveying pipe.

[0014] The guide pipe is threadedly connected to the discharge pipe, and / or the guide pipe is bolted to the delivery pipe.

[0015] The feed inlet of the material receiving pipe is provided with a material receiving funnel.

[0016] The powder pump is fixed on the frame by bolts.

[0017] The discharge pipe is a hose.

[0018] The discharge pipe is fixed to the discharge port of the powder pump through a throat clamp.

[0019] The above structure of the utility model can achieve the following beneficial effects:

[0020] The powder is delivered by a powder pump, which can adapt to large-flow powder delivery without air return. This solves the problem of small powder delivery volume and low delivery efficiency when using a Venturi ejector, and avoids the problem of frequent air return during direct-blowing rotary valve delivery. It has a wider application scenario and strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of this embodiment;

[0022] Figure 2 Schematic diagram of the structure of the delivery pipe and the guide pipe in this embodiment.

[0023] In the figure: 100, powder pump; 200, material receiving pipe; 300, material discharging pipe; 400, conveying pipe; 500, flow guide pipe; 600, material receiving funnel. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] The following is combined with Figure 1 -Attached Figure 2 This application is described in further detail.

[0027] refer to Figure 1 and Figure 2 A positive pressure conveying device without return air is shown, comprising: a bracket, on which a powder pump (powder conveying pump) 100, a material receiving pipe 200, a discharge pipe 300 and a guide are arranged, the material receiving pipe 200 is connected to the feed port of the powder pump 100, and the material receiving pipe 200 is connected to the material input port at the front end of the system, the powder is conveyed to the powder pump 100, and the powder pump 100 works (the powder pump 100 adopts a positive pressure powder conveying method to convey powdered materials), and the powder from the material receiving pipe 200 is conveyed to the discharge pipe 300 connected to the discharge port of the powder pump 100; finally, the powder from the discharge pipe 300 is guided by the guide, so that the powder is conveyed by the powder pump 100, which can adapt to the conveying of large flow of powder, and there is no return air, which solves the problem of small conveying volume and low conveying efficiency of powder conveying using a Venturi ejector and avoids the return air situation that often occurs during the direct blowing rotary valve conveying process. The application has a wide range of application scenarios and strong adaptability.

[0028] refer to Figure 1 and Figure 2 As shown, in order to guide the powder output by the discharge pipe 300, the guide includes a conveying pipe 400, the discharge pipe 300 is connected to the conveying pipe 400, one end of the conveying pipe 400 is an air inlet, and the other end is a discharge port, and the air inlet end of the conveying pipe 400 is externally connected to a blower (Roots blower, etc. can be used). In this way, when the discharge pipe 300 conveys the powder to the conveying pipe 400, the airflow from one end of the conveying pipe 400 blows the powder to the side of the discharge port of the conveying pipe 400, completing the guided conveying of the powder from the discharge pipe 300. A three-way pipe with a coaxial air inlet and a discharge port can be selected as the conveying pipe 400, and Flanges are provided at the three interfaces of the conveying pipe 400, which is convenient for connecting to an external fan and a rear-end powder conveying pipeline, and is convenient for the powder to flow in the discharge pipe 300. The conveying pipe 400 is arranged below the powder pump 100, and the discharge pipe 300 is located above the conveying pipe 400. The powder can move downward with the help of gravity, and a hose can be preferably used as the discharge pipe 300, and the discharge pipe 300 is fixed to the discharge port of the powder pump 100 by a throat clamp, thereby reducing the occurrence of blockage of the discharge pipe 300, improving the sealing between the discharge pipe 300 and the powder pump 100, and further improving the performance of the present application.

[0029] refer to Figure 2As shown, in order to prevent the powder entering the conveying pipe 300 from being blown back to the discharge pipe 300, the discharge end of the discharge pipe 300 is connected to an L-shaped guide pipe 500, and the suspended end of the guide pipe 500 extends into the conveying pipe 400, and the discharge port of the guide pipe 500 faces the discharge port of the conveying pipe 400. In this way, the powder from the discharge pipe 300 is output to one side of the discharge port of the conveying pipe 400, and the discharge port of the guide pipe 500 is arranged opposite to the air inlet, so that the powder entering the conveying pipe 400 continues to move along the initial direction of entry until it leaves the conveying pipe 400, ensuring that the powder will not be blown back to the discharge pipe 200 while reducing energy consumption.

[0030] As a further optimization, the suspended end of the guide tube 500 extending into the conveying tube 400 is coaxially arranged with the conveying tube 400, so that the powder entering the conveying tube 400 can continue to move toward the position of the discharge port, achieving smooth transportation and avoiding blockage.

[0031] A further optimization is that, in order to facilitate installation and removal, the guide pipe 500 is threadedly connected to the discharge pipe 300, and the guide pipe 500 is bolted to the delivery pipe 400. This makes it easy for the staff to assemble the guide pipe 500 with the discharge pipe 300 and the guide pipe 500 with the delivery pipe 400, and also facilitates later repair and maintenance.

[0032] Further optimization is to refer to Figure 1 As shown, in order to facilitate the powder material to enter the material receiving pipe 200, a material receiving funnel 600 is provided at the feed port of the material receiving pipe 200, so as to guide the powder material.

[0033] It is further optimized that, in order to facilitate the installation and removal of the powder pump 100, the powder pump 100 is fixed to the frame by bolts, so that the powder pump 100 is easy to install on the frame, and when the powder pump 100 is damaged, the powder pump 100 can be easily removed from the frame for easy maintenance.

[0034] In summary, the powder pump 100 can complete the powder delivery, adapt to large flow rate powder delivery, and there is no air return. It solves the problem of small powder delivery volume and low delivery efficiency when using a Venturi ejector and avoids the air return that often occurs during direct-blowing rotary valve delivery. The application has a wide range of application scenarios and strong adaptability.

[0035] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A positive pressure conveying device without return air, characterized in that: include: A bracket, on which a powder pump (100), a material receiving pipe (200), a material discharging pipe (300) and a guide are arranged, the material receiving pipe (200) is connected to the material inlet of the powder pump (100), and the material discharging pipe (300) is connected to the material outlet of the powder pump (100); The guide comprises a conveying pipe (400), the discharge pipe (300) is connected to the conveying pipe (400), one end of the conveying pipe (400) is an air inlet, and the other end is a discharge port, and one end of the air inlet of the conveying pipe (400) is externally connected to a fan.

2. A positive pressure conveying non-return air device according to claim 1, characterized in that: The guide device further comprises an L-shaped guide pipe (500), one end of which is connected to the discharge end of the discharge pipe (300), and the other end of which extends into the conveying pipe (400), and the discharge port of the guide pipe (500) faces the discharge port of the conveying pipe (400).

3. A positive pressure conveying non-return air device according to claim 2, characterized in that: The suspended end of the flow guide tube (500) extending into the delivery tube (400) is coaxially arranged with the delivery tube (400).

4. A positive pressure conveying non-return air device according to claim 1, characterized in that: The delivery pipe (400) is a three-way pipe, and flanges are provided at the interfaces of the three-way pipe.

5. A positive pressure conveying non-return air device according to claim 1, characterized in that: The conveying pipe (400) is arranged below the powder pump (100), and the discharge pipe (300) is located above the conveying pipe (400).

6. A positive pressure conveying non-return air device according to claim 3, characterized in that: The guide pipe (500) is threadedly connected to the discharge pipe (300), and / or the guide pipe (500) is bolted to the delivery pipe (400).

7. A positive pressure conveying device without return air according to claim 1, characterized in that: The material receiving funnel (600) is provided at the material inlet of the material receiving pipe (200).

8. A positive pressure conveying device without return air according to claim 1, characterized in that: The powder pump (100) is fixed on the frame by means of bolts.

9. A positive pressure conveying device without return air according to claim 1, characterized in that: The discharge pipe (300) is a hose.

10. A positive pressure conveying device without return air according to claim 9, characterized in that: The discharge pipe (300) is fixed to the discharge port of the powder pump (100) via a throat clamp.

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