Powder suction gun

Abstract

The utility model provides a kind of powder suction gun, including suction gun body, the upper end outer surface of suction gun body is equipped with the installation groove and installation hole connected with hose, installation groove and installation hole are adjacently arranged;The inner wall of suction gun body is integrally provided with several cutting convex strips, wherein the end face of auxiliary air pipe integrally arranged on suction gun body is fixedly installed with micro air pump, air inlet is formed on auxiliary air pipe;The utility model is integrally arranged with the cutting convex strip of circular array equilateral triangle on the inner wall of suction gun body, without additional power to break up and prevent accumulation;Air flow is oriented by inclined auxiliary air pipe, and cutting+flow aid+anti-adhesion are realized by cooperating with convex strip;Powder is easily taken by sharp end suction port, and auxiliary air pipe proximal port can handle powder instantly.

Description

Technical Field

[0001] This utility model belongs to the field of suction gun technology, and in particular relates to a powder suction gun. Background Technology

[0002] In food processing, pharmaceutical preparation, and chemical production, the powder suction gun is a key component connecting the negative pressure source and the material during powder material conveying operations. Its suction efficiency and anti-clogging performance directly affect the continuity of production. Existing powder suction guns typically consist of a hollow gun body, a feed port, and an upper interface that connects to the negative pressure hose. Its working principle is to use negative pressure adsorption to draw powder from the feed port and then convey it to subsequent equipment through the gun body.

[0003] However, existing powder suction guns have the following technical shortcomings in practical applications: Powders (especially flour, milk powder, and pharmaceutical powders) are prone to agglomeration due to static electricity, humidity, and other factors. The inner walls of existing suction guns are mostly smooth, which cannot effectively cut and disperse agglomerates. Agglomerates are prone to bridging and clogging inside the gun, causing interruption of suction. Although some solutions add vibrators or external crushers to the feeding end, this increases the size and cost of the equipment and is not suitable for flexible suction scenarios such as handheld or mobile applications.

[0004] Some suction guns have added gas-assisted structures to reduce powder concentration and adhesion, but the existing air inlet pipes are mostly arranged perpendicular to the gun body axis. The injected airflow is prone to interfering with the powder flow direction, generating eddies that exacerbate material blockage. At the same time, the airflow and agglomerate cutting structure lack coordination, failing to fully utilize the dual effects of "flow aid + dispersion".

[0005] Therefore, it is essential to invent a powder suction gun. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a powder suction gun, including a suction gun body, a mounting groove, a mounting hole, a cutting protrusion, a secondary air inlet pipe, a micro air pump, and an air inlet. The upper outer surface of the suction gun body is provided with a mounting groove and a mounting hole connected to a flexible hose, and the mounting groove and mounting hole are arranged adjacent to each other. A plurality of cutting protrusions are integrally provided on the inner wall of the suction gun body. The micro air pump is fixedly installed on the end face of the secondary air inlet pipe integrally provided on the suction gun body, and an air inlet is provided on the secondary air inlet pipe.

[0007] Preferably, the lower end of the suction gun body is a pointed tip, which is the suction port. The auxiliary air inlet pipe integrally provided on the suction gun body is close to the suction port of the suction gun body and away from the upper end of the suction gun body, and its connection port is connected to the suction port.

[0008] Preferably, the auxiliary air inlet pipe integrally provided on the suction gun body is inclined, and its axis intersects the axis of the suction gun body at an angle of less than 90 degrees. The micro air pump is connected to the inside of the suction gun body through an air inlet on the auxiliary air inlet pipe.

[0009] Preferably, the airflow generated by the micro air pump can be introduced into the interior of the suction gun body and directionally delivered to the communication port above it along the axial direction of the suction gun body.

[0010] Preferably, the airflow introduced into the suction gun body can pass through the cutting protrusions. The cutting protrusions are arranged in a circular array above the inside of the suction gun body, and their cross-section is an equilateral triangular protrusion structure. The cutting protrusions are located above the secondary air inlet pipe and the micro air pump.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The circular array of cutting protrusions integrated into the inner wall of the suction gun of this utility model has strong dispersing ability due to the angularity of its equilateral triangular cross-section, which can directly cut and break up the sucked powder agglomerates. At the same time, the circular array layout ensures the uniformity of circumferential powder flow and avoids local accumulation. Compared with existing smooth inner walls or external cutting devices, it can achieve real-time dispersion of agglomerates without additional power, and the structure is more compact and applicable to more flexible scenarios.

[0012] This utility model features an inclined secondary air inlet pipe (angle between axis and gun body axis < 90°), which directs the airflow generated by the micro air pump along the gun body axis. This avoids airflow disturbance caused by vertical air intake and also drives the powder to flow towards the connecting port. At the same time, the airflow can wash the surface of the cutting ridges when passing through them, reducing powder adhesion. This achieves a synergistic effect of "cutting and dispersing + airflow assistance + anti-adhesion", which can significantly improve material suction efficiency compared to existing single airflow assistance designs.

[0013] The tip of the suction port at the lower end of the suction gun body of this utility model makes it easy to insert into the material pile to pick up the material. The layout of the auxiliary air inlet pipe close to the suction port can immediately perform "cutting + air replenishment" treatment on the powder that has just been sucked in. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a half-sectional structural schematic diagram of the present invention.

[0016] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0017] In the picture: 1. Suction gun body; 2. Mounting groove; 3. Mounting hole; 4. Cutting protrusion; 5. Secondary air inlet pipe; 6. Miniature air pump; 7. Air inlet. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides a powder suction gun, including a suction gun body 1, a mounting groove 2, a mounting hole 3, a cutting protrusion 4, a secondary air inlet pipe 5, a micro air pump 6, and an air inlet 7. The upper outer surface of the suction gun body 1 is provided with a mounting groove 2 and a mounting hole 3 connected to a flexible hose, and the mounting groove 2 and the mounting hole 3 are arranged adjacent to each other. A plurality of cutting protrusions 4 are integrally provided on the inner wall of the suction gun body 1. The micro air pump 6 is fixedly installed on the end face of the secondary air inlet pipe 5 integrally provided on the suction gun body 1, and an air inlet 7 is provided on the secondary air inlet pipe 5.

[0021] Furthermore, the suction gun body 1 is integrally formed from food-grade 316L stainless steel, possessing resistance to powder friction and wear as well as corrosion resistance. Its lower end has a conical tip structure, which is the suction port. The tip taper is set at 30°-45°, facilitating insertion into the powder pile for material retrieval. The auxiliary air inlet pipe 5 on the suction gun body 1 is also made of 316L stainless steel and is integrally fixed to the suction gun body 1 by laser welding. The auxiliary air inlet pipe 5 is 5-15cm away from the suction port end face of the suction gun body 1 and away from the upper end of the suction gun body 1 (i.e., the end connected to the hose). The inner hole of the auxiliary air inlet pipe 5 is directly connected to the inner cavity of the suction gun body 1, forming an airflow introduction channel.

[0022] Furthermore, the auxiliary air inlet pipe 5, integrally mounted on the suction gun body 1, has an inclined structure, with its axis forming an angle of 30°-60° (less than 90 degrees) with the axis of the suction gun body 1. The inner diameter of the auxiliary air inlet pipe 5 is 5-10mm, forming a smooth transition and communication structure with the inner cavity of the suction gun body 1. The micro air pump 6 is a DC 12V micro diaphragm air pump, and its outlet end is fixed to the outer end face of the auxiliary air inlet pipe 5 via an M3 threaded connection. The auxiliary air inlet pipe 5 has a circular air inlet 7 with a diameter of 2-3mm. A nitrile rubber sealing ring is installed between the air outlet channel of the micro air pump 6 and the air inlet 7 to ensure that the airflow generated by the micro air pump 6 can be completely introduced into the suction gun body 1 through the air inlet 7 without any risk of leakage.

[0023] Furthermore, the compressed airflow generated by the micro air pump 6 during operation is smoothly introduced into the suction gun body 1 through the air inlet 7 of the auxiliary air inlet pipe 5. The airflow pressure is adjusted to 0.02-0.05MPa and the flow rate is 1-3L / min. Due to the inclination angle design of the auxiliary air inlet pipe 5 being adapted to the axis of the suction gun body 1, the introduced airflow, after entering the inner cavity of the suction gun body 1, can form a directional airflow jet along the axial direction of the suction gun body 1. This jet works in conjunction with the negative pressure system at the upper connecting port (the interface connecting the negative pressure hose) of the suction gun body 1, driving the powder material to be directionally conveyed to the upper connecting port of the suction gun body 1, thus avoiding powder accumulation caused by airflow turbulence.

[0024] Furthermore, the directional airflow introduced into the suction gun body 1 flows directly over the cutting ridges 4 during the upward conveying process to the connecting port. The cutting ridges 4 and the suction gun body 1 are integrally cast from 316L stainless steel, with 3-6 ridges arranged in a circular array around the axis of the suction gun body 1 (with uniform angles between adjacent ridges). The cross-section of the cutting ridges 4 is an equilateral triangular protrusion structure (protrusion height 1-2mm, apex angle 60°), and the surface of the ridges is nitrided to enhance wear resistance. The cutting ridges 4 are located directly above the secondary air inlet pipe 5 and the micro air pump 6. When the airflow passes over them, it can both scour the surface of the cutting ridges 4 to prevent powder adhesion and drive powder particles to impact the edges of the ridges to cut agglomerates.

[0025] The working principle is as follows: First, the suction gun body 1 is connected to the external negative pressure hose through the mounting groove 2 and mounting hole 3 on the upper outer surface, along with the connecting parts (clamps and bolts) and seals, so that a negative pressure environment is formed inside the suction gun body 1, providing basic power for powder suction.

[0026] Secondly, when the lower suction port of the suction gun body 1 contacts the powder material, under the action of negative pressure, the powder is sucked into the interior of the suction gun body 1 from the suction port and begins to move towards the upper connecting port of the suction gun body 1.

[0027] At the same time, the micro air pump 6 starts working, and the airflow generated enters the suction gun body 1 through the air inlet 7 on the auxiliary air inlet pipe 5. Since the auxiliary air inlet pipe 5 is set at an angle and crosses the axis of the suction gun body 1 at less than 90°, the airflow flows upward along the axis of the suction gun body 1 after entering, forming a synergistic effect with the negative pressure to enhance the upward conveying power of the powder.

[0028] Subsequently, driven by the airflow, the powder continues to move towards the upper end of the suction gun body 1 and flows through the cutting protrusions 4; the cutting protrusions 4 are arranged in a circular array on the inner wall of the suction gun body 1, and their equilateral triangular protrusion structure will impact and cut the powder agglomerates in the flow, dispersing the agglomerates into fine particles.

[0029] At the same time, when the airflow passes through the cutting ridge 4, it will scour the surface of the ridge, reduce the adhesion and accumulation of powder on the cutting ridge 4, and avoid channel blockage caused by adhesion.

[0030] Finally, the powder, after being cut and dispersed, is smoothly conveyed to the subsequent processing equipment through the upper connecting port of the suction gun body 1 under the combined action of negative pressure and airflow, thus completing the entire suction process.

[0031] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A powder suction gun, characterized in that, The device includes a suction gun body (1), a mounting groove (2), a mounting hole (3), a cutting protrusion (4), a secondary air inlet pipe (5), a micro air pump (6), and an air inlet (7). The upper outer surface of the suction gun body (1) is provided with a mounting groove (2) and a mounting hole (3) connected to a hose. The mounting groove (2) and the mounting hole (3) are arranged adjacent to each other. The inner wall of the suction gun body (1) is integrally provided with several cutting protrusions (4). The micro air pump (6) is fixedly installed on the end face of the secondary air inlet pipe (5) integrally provided on the suction gun body (1). The secondary air inlet pipe (5) is provided with an air inlet (7).

2. The powder suction gun as described in claim 1, characterized in that: The lower end of the suction gun body (1) is a pointed tip, which is the suction port. The auxiliary air inlet pipe (5) integrally provided on the suction gun body (1) is close to the suction port of the suction gun body (1) and far away from the upper end of the suction gun body (1), and its connection port is connected.

3. The powder suction gun as described in claim 2, characterized in that: The auxiliary air inlet pipe (5) integrally set on the suction gun body (1) is inclined, and its axis is intersected with the axis of the suction gun body (1) at an angle of less than 90 degrees. The micro air pump (6) is connected to the inside of the suction gun body (1) through an air inlet (7) opened on the auxiliary air inlet pipe (5).

4. A powder suction gun as described in claim 3, characterized in that: The airflow generated by the micro air pump (6) can be introduced into the interior of the suction gun body (1) and directed to the communication port above it along the axial direction of the suction gun body (1).

5. A powder suction gun as described in claim 4, characterized in that: The airflow introduced into the suction gun body (1) can pass through the cutting protrusion (4). The cutting protrusion (4) is arranged in a circular array above the inside of the suction gun body (1). Its cross-section is an equilateral triangular protrusion structure. The cutting protrusion (4) is located above the auxiliary air inlet pipe (5) and the micro air pump (6).

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