一种物料正压输送装置

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By adding a discharge tongue to the horizontal section of the Venturi tee, the problems of material backflow and pipe blockage are solved, enabling high-volume, long-distance material conveying, which is suitable for the pharmaceutical and food industries.

CN224512599UActive Publication Date: 2026-07-17WUXI LINGOOD MACHINERY TECH

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: WUXI LINGOOD MACHINERY TECH
Filing Date: 2025-07-23
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Under the dual requirements of high conveying speed and large conveying capacity, the material backflow and pipe blockage caused by conventional Venturi tee structures affect the conveying quality.

Method used

A discharge tongue is added to the horizontal section of the Venturi tee. The inclined part and the horizontal part form a flow guide barrier. The inclined part is welded to the inner wall of the inclined section and extends in the direction of material flow. The horizontal part extends along the axis of the horizontal section to block the reverse impact of high pressure airflow, form a local negative pressure, and maintain the dilute phase conveying state.

Benefits of technology

It effectively blocks material backflow, avoids dense phase blockage, and enables high-volume, long-distance material conveying. It is suitable for high-standard operating conditions in the pharmaceutical and food industries, and reduces operation and maintenance costs.

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Abstract

本实用新型涉及物料输送装置技术领域，具体为一种物料正压输送装置。包括罗茨风机、投料仓、输送管道和成品仓，输送管道出口与成品仓之间设有上料斗；罗茨风机、投料仓通过改进文氏三通与输送管道入口连接；改进文氏三通包括水平段、倾斜段和竖直段，倾斜段与水平段的夹角范围为20～45°；倾斜段的下方落料位置设有下料舌，下料舌包括倾斜部和水平部，倾斜部连接于倾斜段内壁并向物料流动方向延伸且倾斜部与倾斜段夹角为10～30°，水平部一体成型于倾斜部末端并沿着水平段轴线向输送管道方向延伸，下料舌在水平面上的投影面积不小于倾斜段与水平段连接处的面积。下料舌在落料区形成局部负压，避免返料，有利于大产量、长距离输送需求。

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Claims

1. A material positive pressure conveying device, comprising a Roots blower (1), a feeding bin (2), a conveying pipeline (5) and a finished product bin (7), an upper hopper (6) is arranged between the outlet of the conveying pipeline (5) and the finished product bin (7); characterized in that: The Roots blower (1) and the feeding hopper (2) are connected to the inlet of the conveying pipe (5) via a modified Venturi tee (3); the modified Venturi tee (3) includes a horizontal section (31), an inclined section (34), and a vertical section (35) connected in sequence, the angle between the inclined section (34) and the horizontal section (31) is in the range of 20-45°; a discharge tongue (37) is provided at the material drop position below the inclined section (34), the discharge tongue (37) includes an inclined part (371) and a horizontal part (371). 372), the inclined part (371) is welded to the inner wall of the inclined section (34) and extends in the direction of material flow, and the angle between the inclined part (371) and the inclined section (34) is 10 to 30°. The horizontal part (372) is integrally formed at the end of the inclined part (371) and extends along the axis of the horizontal section (31) towards the conveying pipe (5). The projected area of the discharge tongue (37) on the horizontal plane is not less than the area at the connection between the inclined section (34) and the horizontal section (31).

2. A material positive pressure conveying apparatus according to claim 1, wherein: The angle between the inclined section (371) and the axis of the horizontal section (31) is 30 to 75°, and the extension length of the horizontal section (372) is 1 / 3 to 1 / 2 of the diameter of the horizontal section (31).

3. The material positive pressure conveying apparatus of claim 1, wherein: A rotary valve (4) is provided between the vertical section (35) of the improved Venturi tee (3) and the feeding bin (2), and the rotary valve (4) is connected to the vertical section (35) through a third flange (36).

4. The positive pressure material conveying device according to claim 1, characterized in that: The horizontal section (31) is connected to the Roots blower (1) via the first flange (32) and to the conveying pipeline (5) via the second flange (33).

5. The apparatus of claim 2, wherein: The angle between the inclined section (371) and the axis of the horizontal section (31) is 30 to 45°, and the extension length of the horizontal section (372) is 1 / 2 of the diameter of the horizontal section (31).

6. The apparatus of claim 1, wherein: The material of the feeding tongue (37) is 304 stainless steel.