Material suction nozzle structure for negative pressure material suction
By designing a suction nozzle structure that matches the valve box and the stirring rod, the problems of voids and material backflow during negative pressure suction are solved, and the reliability of suction and the accuracy of metering are achieved.
Patent Information
- Application Number
- CN202422533930.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-18
AI Technical Summary
Existing negative pressure suction equipment is prone to forming cavities during the suction process, resulting in inaccurate metering and material backflow in the pipeline, affecting the conveying effect.
A suction nozzle structure including a valve box, a sealing head and a stirring rod is designed. The sealing head cooperates with the compression spring to automatically close the valve box inlet when the negative pressure disappears or weakens to prevent material backflow. During the suction process, the stirring rod is used to move the material to fill the void, ensuring the reliability and continuity of material suction.
It improves the reliability of material suction and the accuracy of metering, ensures the continuous transportation of materials, and avoids empty suction and pipeline deformation.
Smart Images
Figure CN223356860U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of feed additive processing equipment and relates to a material suction nozzle structure for negative pressure material suction. Background Art
[0002] The plant powder of feed additive is transported by negative pressure suction. The suction tube inlet of the negative pressure suction is placed in the material barrel. During the suction process, the powder is likely to form cavities at the entrance of the capillary tube, which is not conducive to metering and feeding. In addition, after stopping the suction, the divided material in the pipeline will return to the material barrel due to weight. When it is restarted, there is an empty suction process. The existence of this process not only affects the metering, but also sends a certain amount of air into the target conveying container, causing dust and hose deformation and damage. Therefore, it is necessary to set a suction nozzle at the inlet of the negative pressure suction pipe to improve the suction effect. Utility Model Content
[0003] The purpose of the utility model is to provide a suction nozzle structure for negative pressure material suction in view of the above-mentioned problems existing in the existing technology. The technical problem to be solved by the utility model is how to improve the reliability of material suction.
[0004] The purpose of the utility model can be achieved through the following technical solutions: a suction nozzle structure for negative pressure suction, characterized in that it includes a valve box connected to the inlet end of the suction pipe, a sealing head is longitudinally slidably connected to the valve box, the sealing head is conical, and a sealing block adapted to the sealing head is provided at the inlet of the valve box, a compression spring is connected between the sealing head and the valve box to drive the sealing head to press the sealing block, a plurality of stirring rods are fixedly provided on the sealing head, and the stirring rods are longitudinally slidably connected to the valve box.
[0005] Furthermore, a stirring head extending out of the valve box is fixedly provided at the lower end of the sealing head.
[0006] This solution automatically closes the valve box inlet when negative pressure disappears or weakens, preventing material from flowing back into the suction pipe. This ensures the pipe is fully filled during secondary negative pressure suction, allowing for continuous material delivery during start-up and shutdown processes. Furthermore, if a "hole" appears near the valve box during suction—that is, if material is trapped and no powder can be sucked in—the pressure in the suction pipe changes, causing the sealing head to move longitudinally, allowing the rubber rod and rubber head to move the material around the valve box, filling the "hole" with material. This approach improves the reliability and continuity of suction, and particularly improves metering accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a cross-sectional view of the suction nozzle structure.
[0008] In the figure, 1, suction pipe; 2, valve box; 3, sealing head; 4, sealing block; 5, compression spring; 6, stirring rod; 7, stirring head. DETAILED DESCRIPTION
[0009] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0010] like Figure 1 The suction nozzle structure for negative pressure suction shown includes a valve box 2 connected to the inlet end of the suction pipe 1, a sealing head 3 is longitudinally slidably connected in the valve box 2, the sealing head 3 is conical, and a sealing block 4 adapted to the sealing head 3 is provided at the inlet of the valve box 2. A compression spring 5 is connected between the sealing head 3 and the valve box 2 to drive the sealing head 3 to press the sealing block 4, and a plurality of stirring rods 6 are fixedly provided on the sealing head 3, and the stirring rods 6 are longitudinally slidably connected to the valve box 2.
[0011] The lower end of the sealing head 3 is fixed with a stirring head 7 extending out of the valve box 2. The stirring rod can be special-shaped, and the sliding part can be a vertical rod, and the stirring head 7 can also be a structure with multiple barbs, and the glue rod 6 and the glue head can be made of plastic.
[0012] This solution automatically closes the inlet of valve box 2 when negative pressure disappears or weakens, preventing backflow of material within suction pipe 1. This ensures that suction pipe 1 is fully filled during secondary negative pressure suction, allowing for continuous material delivery during start-up and shutdown processes. Furthermore, during the suction process, if a "hole" appears near valve box 2—that is, if material is trapped and no powder can be sucked in—the pressure within suction pipe 1 will change, causing sealing head 3 to move longitudinally, allowing the rubber rod and rubber head to move the material around valve box 2, filling the "hole" with material. This approach improves the reliability and continuity of suction, and particularly enhances metering accuracy.
[0013] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
Claims
1. A suction nozzle structure for negative pressure suction, characterized in that: The invention comprises a valve box (2) connected to the inlet end of a suction pipe (1), a sealing head (3) is longitudinally slidably connected in the valve box (2), the sealing head (3) is conical, a sealing block (4) adapted to the sealing head (3) is provided at the inlet of the valve box (2), a compression spring (5) is connected between the sealing head (3) and the valve box (2) for driving the sealing head (3) to press the sealing block (4), a plurality of stirring rods (6) are fixedly provided on the sealing head (3), and the stirring rods (6) are longitudinally slidably connected to the valve box (2).
2. A suction nozzle structure for negative pressure material suction according to claim 1, characterized in that: A stirring head (7) extending out of the valve box (2) is fixedly provided at the lower end of the sealing head (3).