Stirring device of screw feeder and screw feeder

Abstract

The utility model relates to the technical field of material conveying system engineering, and discloses a stirring device of a screw feeder and the screw feeder. The stirring device comprises a support installed on a hopper of the screw feeder and a base horizontally installed on one side of the upper portion of the hopper through the support, a second motor is arranged at the end, away from the hopper, of the base, and a sliding rail is arranged at the end, close to the hopper, of the base. A sliding rod horizontally arranged relative to the base is installed in the sliding rail in a sliding mode, one end of the sliding rod is connected with the second motor through a connecting piece, the other end of the sliding rod is connected with a stirring shaft vertically arranged along the axis of the hopper, and one end, extending along the interior of the hopper, of the stirring shaft is connected with stirring blades. In practical application, the stirring device can fully stir materials in the hopper, the materials are prevented from being stacked and arched in the hopper, the looseness of the materials is ensured, the screw feeder can uniformly discharge materials, and the metering precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material conveying system engineering technical field, concretely relates to a kind of stirring device and screw feeder of spiral feeder. BACKGROUND

[0002] Screw feeder is a kind of conveying equipment handling bulk solids, conveying medium is mainly powder and granular material, wherein spiral blade and screw rotate in material pipe, move material forward and move from feeding device to discharge port, usually horizontal or slightly inclined use, can also vertically convey material. Screw feeder is widely used in conveying flour processing industry (bran, flour etc.), feed processing industry (pet feed, fish feed etc.) and bridging material processing industry (sawdust, soybean etc.).

[0003] Screw feeder is usually selected according to the characteristics (shape, granularity, moisture content and viscosity etc.) of conveying material, but in actual use, due to the characteristics of fine powder material, such as easy caking and arching, uneven feeding, even no feeding, seriously affect the measurement accuracy. Therefore, to find a structure design reasonable, simple, convenient operation, low in price, time-saving and labor-saving anti-blocking device is the problem to be solved at present. SUMMARY

[0004] The utility model aims at overcoming the problems of material arching, blocking and poor feeding in the existing screw feeder during discharging, and provides a stirring device and screw feeder of spiral feeder. The device can fully stir the material in the hopper by back and forth stirring of stirring shaft and stirring blade without affecting the feeding amount, avoid material arching in the hopper, ensure the loose nature of the material, make the screw feeder feed evenly, improve the measurement accuracy, and the material of stirring shaft and blade can be replaced to adapt to different characteristics of fine powder material.

[0005] In order to achieve the above purpose, the utility model provides a stirring device of spiral feeder, which comprises a bracket installed on the hopper of spiral feeder and a base horizontally installed on one side above the hopper through the bracket, a second motor is arranged on the end of the base away from the hopper, a slide rail is arranged on the end close to the hopper, a slide rod is slidably installed in the slide rail and horizontally arranged relative to the base, one end of the slide rod is connected with the second motor through a connecting piece, the other end is connected with a stirring shaft vertically arranged along the inside of the hopper, and the stirring shaft is connected with stirring blades at one end extending along the inside of the hopper.

[0006] Preferably, the connecting piece is a two-link rod.

[0007] Preferably, the two ends of the two-connecting-rod are connected with the second motor and the slide rod respectively through bolt-nut connectors.

[0008] Preferably, the connection between the stirring shaft and the slide rod is detachable.

[0009] Preferably, the vertical distance between the end of the stirring shaft extending along the inside of the hopper and the upper surface of the feeding frame of the screw feeder is 1-3 cm.

[0010] Preferably, the material of the stirring shaft and the stirring blade is stainless steel, carbon steel, alloy steel, glass steel or plastic.

[0011] Preferably, the stainless steel includes 304 stainless steel, 316L stainless steel and duplex stainless steel.

[0012] Preferably, the carbon steel includes 20 carbon steel, 35 carbon steel, 40 carbon steel and 50 carbon steel.

[0013] Preferably, the alloy steel includes 40Cr alloy steel, 65Mn alloy steel, 20CrMnTi alloy steel and 20Mn2B alloy steel.

[0014] Preferably, the plastic includes polytetrafluoroethylene, polypropylene and polyethylene.

[0015] The utility model discloses a second aspect provides a kind of screw feeder, wherein the screw feeder includes the stirring device of above-mentioned screw feeder.

[0016] According to the stirring device of the screw feeder provided by the utility model, in the process of discharging, the second motor drives the slide rod to make reciprocating motion without affecting the feeding amount, the stirring shaft and the stirring blade stir back and forth with the slide rod in the lower part of the hopper, so that the material in the hopper is fully stirred, the accumulation of the material in the hopper is avoided, the looseness of the material is ensured, the screw feeder discharges uniformly, and the measurement accuracy is improved. In addition, since the connection between the stirring shaft and the slide rod is detachable, and the material of the stirring shaft and the stirring blade can be replaced, the stirring device can meet the transportation requirements of fine powdery materials with different characteristics. Furthermore, the stirring device has simple structure, is easy to install, and is easy to obtain and low in price. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is the overall structure schematic view of the screw feeder described in the utility model;

[0018] Fig. 2 is the left view of the screw feeder described in the utility model;

[0019] Fig. 3It is the partial view of the stirring device of the screw feeder.

[0020] Explanation of reference signs

[0021] 1, hopper; 2, first motor; 3, screw shaft; 4, discharging pipe; 5, second motor; 6, slide rod; 7, stirring shaft; 8, stirring blade; 9, support; 10, slide rail; 11, bolt nut connecting piece; 12, base; 13, material conveying frame. DETAILED DESCRIPTION

[0022] The specific embodiments described herein are intended to be illustrative only and are not intended to limit the scope of the present application. Numerous variations and modifications will become apparent to those skilled in the art in view of the foregoing description.

[0023] In the description of the present application, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating relative importance, or implying the number of the indicated technical features. Therefore, unless otherwise specified, the features limited by "first", "second" can explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "includes" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof can exist or be added.

[0024] In addition, the terms indicating the orientation or positional relationship of "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are described based on the orientation or relative position relationship shown in the drawings, and are only for the convenience of the simplified description of the present application, and are not intended to indicate that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In addition, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The utility model provides a kind of stirring device of screw feeder, in combination with referring to Figs. 1-3The utility model discloses a kind of agitator devices, which includes support 9 installed on the hopper 1 of screw feeder and base 12 horizontally installed on the side above the hopper 1 by the support 9, second motor 5 is provided on the end of the base 12 away from the hopper 1, slide rail 10 is provided on the end close to the hopper 1, slide rail 10 is slidably installed in the slide rail 10, and the slide rail 6 is horizontally arranged relative to the base 12, one end of the slide rail 6 is connected with the second motor 5 through a connecting piece, the other end is connected with the agitator shaft 7 vertically arranged along the axis of the hopper 1, and the agitator shaft 7 is connected with the stirring blade 8 at one end extending along the inside of the hopper 1.

[0027] In the utility model, one end of the slide rail 6 is connected with the second motor 5 through a two-link mechanism, and the two ends of the two-link mechanism are connected with the second motor 5 and the slide rail 6 respectively through bolt-nut connectors 11.

[0028] In the utility model, in order to convey fine-powder materials with different characteristics, the connection mode of the agitator shaft 7 and the slide rail 6 is preferably detachable connection, which is simple in operation and convenient to install.

[0029] In the preferred embodiment, the agitator shaft 7 makes equal-distance reciprocating motion horizontally along the central axis of the hopper 1 with the slide rail 6.

[0030] In some specific embodiments, the length of the agitator shaft 7 is slightly longer than the height of the hopper 1, and the vertical distance between the end of the agitator shaft 7 extending along the inside of the hopper 1 and the upper surface of the material conveying frame 13 of the screw feeder is 1-3 cm.

[0031] In another specific embodiment, when the agitator shaft 7 and the stirring blade 8 move to the left and right ends in the hopper 1 with the slide rail 6, the horizontal distance between the stirring blade 8 and the inner wall of the hopper 1 is 3-10 cm, and the distance can be adjusted according to the caliber size of the end of the hopper 1 close to the screw shaft 3.

[0032] In the utility model, the material of the agitator shaft 7 and the stirring blade 8 is not particularly limited, and various materials commonly used in the field can be used as the agitator shaft and the stirring blade. The material of the agitator shaft 7 and the stirring blade 8 is the same or different, and is preferably the same. The material of the agitator shaft 7 and the stirring blade 8 is stainless steel, carbon steel, alloy steel, glass steel or plastic.

[0033] Since carbon steel has good strength and rigidity, and the manufacturing cost is low, in some more preferred embodiments, the material of the stirring shaft 7 and the stirring blade 8 is carbon steel, and the carbon steel includes 20 carbon steel, 35 carbon steel, 40 carbon steel and 50 carbon steel, and in some specific embodiments, the material of the stirring shaft 7 and the stirring blade 8 is 40 carbon steel.

[0034] Since stainless steel has good corrosion resistance, wear resistance and elasticity, in other more preferred embodiments, the material of the stirring shaft 7 and the stirring blade 8 is stainless steel, and the stainless steel includes 304 stainless steel, 316L stainless steel and duplex stainless steel. In some specific embodiments, the material of the stirring shaft 7 and the stirring blade 8 is 316L stainless steel.

[0035] Since alloy steel has wear resistance and impact resistance, in still more preferred embodiments, the material of the stirring shaft 7 and the stirring blade 8 is alloy steel, and the alloy steel includes 40Cr alloy steel, 65Mn alloy steel, 20CrMnTi alloy steel and 20Mn2B alloy steel. In some specific embodiments, the material of the stirring shaft 7 and the stirring blade 8 is 20CrMnTi alloy steel.

[0036] Since plastic has corrosion resistance and wear resistance, in still other more preferred embodiments, the material of the stirring shaft 7 and the stirring blade 8 is plastic, and the plastic includes polytetrafluoroethylene, polypropylene and polyethylene. In some specific embodiments, the material of the stirring shaft 7 and the stirring blade 8 is polytetrafluoroethylene.

[0037] The utility model discloses a second aspect provides a kind of screw feeder, in combination with referring to Fig. 1 The screw feeder includes the above stirring device, the stirring device is fixed on the hopper 1 of screw feeder, the hopper 1 is fixed on the material conveying frame 13 arranged horizontally, the end of the material conveying frame 13 close to the hopper 1 is provided with the first motor 2, the other end of the material conveying frame 13 is provided with the discharging pipe 4, the material conveying frame 13 is internally provided with the spiral shaft 3 connected with the output shaft of the first motor 2.

[0038] In the discharging process, when the material falls from the top of the hopper 1, the second motor 5 drives the slide rod 6 to reciprocate, the stirring shaft 7 and the stirring blade 8 stir back and forth with the slide rod 6 at the lower part of the hopper 1, so that the material in the hopper 1 can be fully stirred, and the arching of the material can be avoided; the stirred material will enter the material conveying frame 13 below the hopper 1, and the output shaft of the first motor 2 drives the spiral shaft 3 to rotate, thereby driving the material in the material conveying frame 13 to flow to one end of the discharging pipe 4, so as to collect the material.

[0039] The stirring device of the screw feeder and the screw feeder according to the present application will be further illustrated by the following examples, but the protection scope of the present application is not limited to the following examples.

[0040] Example 1

[0041] In combination with the accompanying drawings, Figs. 1-3 The stirring device comprises a bracket 9 mounted on a hopper 1 of the screw feeder and a base 12 horizontally mounted on one side above the hopper 1 through the bracket 9, a second motor 5 is arranged on one end of the base 12 away from the hopper 1, a sliding rail 10 is arranged on one end of the base 12 close to the hopper 1, a sliding rod 6 horizontally arranged relative to the base 12 is slidingly mounted in the sliding rail 10, one end of the sliding rod 6 is connected with the second motor 5 through a connecting piece, the other end of the sliding rod 6 is connected with a stirring shaft 7 vertically arranged along the axis of the hopper 1, and one end of the stirring shaft 7 extending along the inside of the hopper 1 is connected with stirring blades 8;

[0042] The vertical distance between the end of the one end of the stirring shaft 7 extending along the inside of the hopper 1 and the upper surface of a material conveying frame 13 of the screw feeder is 2 cm;

[0043] When the stirring shaft 7 and the stirring blades 8 move to the left and right ends in the hopper 1 along with the sliding rod 6, the horizontal distance between the stirring blades 8 and the inner wall of the hopper 1 is 5 cm;

[0044] The material of the stirring shaft 7 and the stirring blades 8 is 316L stainless steel.

[0045] In actual application, when calcium hydroxide powder (from Jining Liguobio Technology Co., Ltd.) falls from the top of the hopper 1, the second motor 5 drives the sliding rod 6 to reciprocate, the stirring shaft 7 and the stirring blades 8 stir back and forth along with the sliding rod 6 in the lower part of the hopper 1, so that the materials in the hopper 1 can be fully stirred and the materials are prevented from arching, the stirred materials enter the material conveying frame 13 below the hopper 1, the output shaft of the first motor 2 drives the screw shaft 3 to rotate, so as to drive the materials in the material conveying frame 13 to flow to one end of the discharging pipe 4, so as to collect the materials.

[0046] The stirring device of the screw feeder provided by the present application can fully stir the materials in the hopper through the reciprocating stirring of the stirring shaft and the stirring blades without affecting the feeding amount, avoid the materials from arching in the hopper, ensure the looseness of the materials, make the screw feeder uniformly discharge, and improve the metering accuracy. In addition, the stirring device is simple and convenient to install, and the material of the stirring shaft and the stirring blades can be replaced, so that the stirring device can adapt to different characteristics of the fine powder materials.

[0047] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including the combination of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as disclosed by the present application and belong to the protection scope of the present application.

Claims

1. A stirring device for a screw feeder, characterized in that, The stirring device comprises a support (9) mounted on a hopper (1) of a screw feeder and a base (12) mounted horizontally on one side above the hopper (1) through the support (9), a second motor (5) is arranged on an end of the base (12) away from the hopper (1), a slide rail (10) is arranged on an end of the base (12) close to the hopper (1), a slide rod (6) arranged horizontally relative to the base (12) is slidably mounted in the slide rail (10), one end of the slide rod (6) is connected with the second motor (5) through a connecting piece, the other end is connected with a stirring shaft (7) arranged vertically along the inside of the hopper (1), and an end of the stirring shaft (7) extending along the inside of the hopper (1) is connected with a stirring blade (8).

2. A stirring device for a screw feeder according to claim 1, characterized in that The connecting piece is a two-link rod.

3. A stirring device for a screw feeder according to claim 2, characterized in that Both ends of the two-link rod are connected with the second motor (5) and the slide rod (6) respectively through bolt and nut connecting pieces (11).

4. The agitator of claim 1, wherein The connecting mode of the stirring shaft (7) and the slide rod (6) is detachable connection.

5. A stirring device for a screw feeder according to any one of claims 1-4, characterized in that The vertical distance between the end of the end of the stirring shaft (7) extending along the inside of the hopper (1) and the upper surface of a material conveying frame (13) of the screw feeder is 1-3 cm.

6. The agitator of claim 1, wherein The materials of the stirring shaft (7) and the stirring blade (8) are stainless steel, carbon steel, alloy steel, glass steel or plastic.

7. A stirring device for a screw feeder according to claim 6, characterized in that The stainless steel comprises 304 stainless steel, 316L stainless steel and duplex stainless steel.

8. The agitator of claim 6, wherein, The carbon steel comprises 20 carbon steel, 35 carbon steel, 40 carbon steel and 50 carbon steel.

9. The agitator of claim 6, wherein, The alloy steel comprises 40Cr alloy steel, 65Mn alloy steel, 20CrMnTi alloy steel and 20Mn2B alloy steel.

10. The agitator of claim 6, wherein The plastic comprises polytetrafluoroethylene, polypropylene and polyethylene.

11. A screw feeder, characterized in that The screw feeder comprises the stirring device of the screw feeder according to any one of claims 1-10.

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