Screw rod for conveying materials

Abstract

The invention discloses a screw rod for conveying materials, which comprises a bottom rod, a plurality of bulges are arranged on the surface of the bottom rod, the bulges are spiral and extend along the length direction of the bottom rod, a conveying channel is formed between every two bulges, and a traditional screw rod for feeding can only be used for conveying high-viscosity or ultrahigh-viscosity fluid, so that the screw rod cannot be used for conveying the high-viscosity or ultrahigh-viscosity fluid. According to the utility model, the operation is difficult for relatively thin materials, if the materials are filled with fillers, the materials are layered and the material residues are conveyed out under the extrusion condition, and the thin materials are left in the original place under the extrusion condition and are not conveyed out in the same proportion, so that the continuous and uniform material conveying cannot be realized; the problems are perfectly solved, materials with different viscosities can be continuously and uniformly conveyed, and even if solid particles are added into the materials, the continuous and uniform conveying can still be realized.

Description

Technical Field

[0001] This invention relates to the field of feeding screw technology, and in particular to a screw for conveying materials. Background Technology

[0002] A screw valve is a high-precision fluid metering device. It forms a sealed cavity with the stator via a feeding screw, and the screw rotation smoothly pushes the fluid from the inlet to the outlet. The conveying volume is precisely controlled by the screw pitch and rotation angle, making it particularly suitable for high-viscosity fluids. It effectively avoids problems such as stringing and dripping. This device boasts high metering accuracy and zero pulsation in the discharge, and is widely used in industries such as electronics manufacturing, automotive parts, medical devices, and new energy. It can perform various industrial processes such as dispensing, coating, and potting.

[0003] Traditional screw valves typically only have a screw that can be used to transport high-viscosity fluids. Their effectiveness is greatly reduced when used with thinner materials. Furthermore, if the material contains filler, it will stratify under compression conditions. The material residue will be squeezed out, while the thinner material will not, making it impossible to achieve continuous and uniform material transport. Summary of the Invention

[0004] This application provides a screw for conveying materials, which can solve the problem that the feeding screw in the traditional screw valve can only convey high-viscosity liquids, and the conveying effect is poor for relatively thin materials or when the material contains filler.

[0005] This application provides a screw for conveying materials, including a base rod. The surface of the base rod is provided with a plurality of protrusions, which are spiral in shape and extend along the length of the base rod. A conveying channel is formed between each pair of protrusions.

[0006] Furthermore, the number of the aforementioned protrusions is even.

[0007] Furthermore, the specific number of protrusions is two, four, six, eight, or ten.

[0008] Furthermore, the protrusion is provided with a plurality of mixing grooves, which are evenly distributed along the length of the bottom rod.

[0009] Furthermore, taking the end face of the bottom rod as the starting point A, the mixing groove is opened at 90° with each 90° rotation of the spiral as a cycle, or the mixing groove is opened at 180° with each 180° rotation of the spiral as a cycle.

[0010] Furthermore, the length of the starting point A after rotating 90° is L, and the width of the mixing tank is half of L, a quarter of L, or any number between 0 and half of L. The calculation method for rotating 180° is the same as that for 90°.

[0011] In summary, the beneficial effects of the screw for conveying materials described in this application are as follows: By employing a multi-spiral protrusion structure design, this invention significantly improves the adaptability to fluids of varying viscosities compared to traditional single-head or few-protrusion feeding screws. It not only stably conveys high-viscosity fluids, but also, for dilute fluids, utilizes the constraint and pushing effect of the multi-spiral channels to prevent material backflow or discontinuous conveying, effectively solving the limitation of the conveying range inherent in traditional screws. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the double-ended screw; Figure 2 The front view of the invention's two-ended screw; Figure 3 A schematic diagram of the structure of the four-headed screw; Figure 4 Front view of the invention of the four-headed screw; Figure 5 A schematic diagram of the structure of the invention six-head screw; Figure 6 Front view of the invention of the six-headed screw; Figure 7 A schematic diagram of the structure of the eight-headed screw; Figure 8 Front view of the invention of the eight-headed screw; Figure 9 A schematic diagram of the structure of the ten-head screw; Figure 10 Front view of the invention of the ten-head screw; Figure 11 This is a schematic diagram of L in the formula for calculating the width of the mixing tank.

[0013] Reference numerals: 1. Base rod; 2. Protrusion; 3. Conveying channel; 4. Mixing tank; 5. End face; 6. Point A; 7. Double-headed screw; 8. Four-headed screw; 9. Six-headed screw; 10. Eight-headed screw; 11. Ten-headed screw. Detailed Implementation

[0014] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of the present invention should be considered within the protection scope of the present invention. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the protection scope of the present invention.

[0015] like Figures 1 to 11 As shown, a screw for conveying materials includes a base rod 1. Several protrusions 2 are provided on the outer side wall of the base rod 1. Each protrusion 2 is spirally arranged along the length of the base rod 1, so each protrusion 2 is spiral-shaped. The spiral center of each protrusion 2 is on the same horizontal line as the center of the base rod 1, and each protrusion 2 is arranged in a ring with the center of the base rod 1 as the center. This allows each protrusion 2 to be staggered from each other. A conveying channel 3 is formed between every two adjacent protrusions 2. The conveying channel 3 is used to convey fluid.

[0016] Furthermore, the number of protrusions 2 on the outer wall of the bottom rod 1 is even, specifically, it can be a two-headed screw, a four-headed screw 8, a six-headed screw 9, an eight-headed screw 10, or a ten-headed screw 11. The more protrusions 2 there are, the smaller the distance between two adjacent transport channels, which will make the gap of the transport channel 3 smaller. The smaller the gap, the stronger the transport effect on relatively thin materials. The more channels there are, the stronger the wrapping and constraint effect on the fluid, and the better the transport effect. The number of protrusions 2 can be selected according to the actual situation of the fluid.

[0017] Furthermore, several mixing grooves 4 are provided on the protrusion 2. The mixing grooves 4 are also evenly arranged along the length of the bottom rod 1, with the leftmost or rightmost end face 5 of the bottom rod 1 as the starting point. This starting point is set as point A6. At the same time, point A6 is also the starting point of the spiral. Whenever the spiral rotates 90° or 180°, a mixing groove 4 is opened at this point. The mixing groove 4 can be opened at 90° or 180° according to the actual situation of the fluid until the end. When conveying some materials containing fillers, the materials can be fully stirred and mixed in the mixing groove 4. Since the mixing groove 4 is located at 90° or 180° of the spiral, the two separate protrusions 2 will be staggered relative to each other, which allows the materials to flow accurately into the mixing groove 4.

[0018] Furthermore, the width of the mixing tank 4 needs to be set according to the actual situation. The calculation method for the width of the mixing tank 4 is as follows: take the starting point A as the starting segment, and take the point of 90° as the ending segment after the spiral rotates 90°. The length of this segment is set as L. The width of the mixing tank 4 can be 1 / 2L, 1 / 4L, or any number between 0 and 1 / 2L. The calculation method for rotating 180° is the same as that for 90°. This calculation method can accurately match the material characteristics and balance the mixing effect and conveying efficiency.

Claims

1. A screw for conveying material, characterized in that The utility model relates to a bottom bar (1), the surface of bottom bar (1) is provided with several convex (2), the convex (2) is spiral, and the convex (2) extends along the length direction of bottom bar (1), and the conveying channel (3) is formed between every two convex (2).

2. A screw for conveying material as claimed in claim 1, wherein The number of the convex (2) is even.

3. A screw for conveying material as claimed in claim 2, wherein The specific number of the convex (2) is two, four, six, eight or ten.

4. A screw for conveying material as claimed in claim 3, wherein The convex (2) is provided with several mixing grooves (4), and the mixing grooves (4) are evenly provided along the length direction of bottom bar (1).

5. A screw for conveying material as claimed in claim 4, wherein The end surface (5) of the bottom bar (1) is taken as the starting point A, and the mixing groove (4) is provided at 90° of spiral line every time or at 180° of spiral line every time.

6. A screw for conveying material as claimed in claim 5, wherein The length of the starting point A after rotating 90° is L, the width of the mixing groove (4) is one-half of L, one-fourth of L or any number between 0 and one-half of L, and the calculation mode of rotating 180° is the same as that of rotating 90°.

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