Powder weighing spiral metering device

Abstract

The utility model provides a powder weighing spiral metering device which comprises a driving shaft and a spiral conveying rod, and the front end of the driving shaft is fixedly connected with the rear end of the spiral conveying rod. In the invention, the front end and the rear end of the screw rod form rigid supports, so that the rotation of the screw rod is more stable, and the service life is prolonged. In addition, the spiral supporting base prevents large impurities from entering the packaging machine, the failure rate of the packaging machine is reduced, and the influence on the product quality is also avoided.

Description

Technical Field

[0001] The present application relates to the production of powder mortar products, and in particular to a powder weighing spiral metering device. Background Art

[0002] Mortar products are powder products, and are packaged as bags of a certain weight. Therefore, when conveying the powder to the packaging machine, the amount of the conveyed powder needs to be measured.

[0003] The powder screw conveyor is a widely used equipment. It continuously conveys materials on a certain line, so it is also called a continuous powder screw conveyor. Continuous conveying is conducive to continuous production. Weighing screw conveyors are widely used as quantitative screw feeding machines and are common conveying equipment in the building materials industry. Weighing screw conveyors have high metering accuracy and stable operation.

[0004] In the currently used powder conveying screw metering device, a screw is used to convey materials. The existing screw is a floating connection, one side is movably connected to the drive shaft and is not fixed, and the other end is a free end. During use, the screw shakes in the metering barrel and causes wear, resulting in an increasing gap between the screw and the metering barrel, which increases the metering error and reduces the service life of the metering screw. Utility Model Content

[0005] The purpose of the present application is to improve the spiral metering device so that both ends of the spiral rod are fixedly supported and the spiral rod is kept to rotate stably when conveying powder.

[0006] To this end, the present application provides a powder weighing screw metering device, comprising a drive shaft and a screw conveying rod, wherein the front end of the drive shaft is fixedly connected to the rear end of the screw conveying rod.

[0007] The drive shaft is detachably fixedly connected to the screw conveying rod, and in particular, the drive shaft is fixed to the screw conveying rod by bolts and nuts.

[0008] The device further comprises a metering cylinder sleeved on the front of the screw conveying rod. The front end of the metering cylinder is provided with a spiral support seat, the spiral support seat is annular and has a grid support located at the outlet of the metering cylinder. Further, the grid support is movably connected to the screw conveying rod through a bearing.

[0009] In the present application, the front and rear ends of the spiral rod are rigidly fixed, so that the rotation of the spiral rod is more stable and the service life is improved. In addition, the spiral support seat prevents larger impurities from entering the packaging machine, reduces the failure rate of the packaging machine, and avoids affecting product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1is a schematic diagram of a device according to an embodiment of the present application.

[0011] Figure 2 yes Figure 1 Schematic diagram of the connection between the rear end of the spiral conveying rod and the drive shaft in the implementation.

[0012] Figure 3 yes Figure 1 A schematic diagram of a spiral support seat at the front end of the spiral conveying rod in an embodiment.

[0013] 100 powder weighing screw metering device, 110 drive shaft, 120 screw conveying rod, 130 metering cylinder, 140 screw support seat, 142 grid support, 144 bearing, 10 bolts, 20 locking nuts DETAILED DESCRIPTION

[0014] The specific implementation of the present application is described below with reference to the accompanying drawings.

[0015] In the context of the present application, the term "front" refers to a direction consistent with the powder conveying direction, and the term "rear" refers to a direction opposite to the powder conveying direction.

[0016] Reference Figure 1 A powder weighing screw metering device 100 includes a driving shaft 110, a screw conveying rod 120 and a metering cylinder 130.

[0017] The front end of the driving shaft 110 is fixedly connected to the rear end of the spiral conveying rod 120. Figure 2 When the screw and nut are connected, corresponding pin holes are provided at the front end of the driving shaft 110 and the rear end of the screw conveying rod 120, and the bolt 10 passes through the pin holes on the driving shaft 110 and the screw conveying rod 120, and is fastened by the locking nut 20. In this way, a rigid fixed connection is formed between the driving shaft 110 and the screw conveying rod 120, thereby forming a support at the rear end of the screw conveying rod 120.

[0018] Reference Figure 1 and Figure 3 The metering cylinder 130 is sleeved on the front of the screw conveying rod 120. The metering cylinder 130 can be fixed to the frame of the equipment (not shown in the figure). Figure 3 , a spiral support seat 140 is provided at the front end of the metering cylinder 130. In one example, the spiral support seat 140 is fixedly connected to the metering cylinder 130, and can be detachably fixed, for example, by using a bayonet or thread, or can be non-detachably fixed, for example, by using welding. In another example, the spiral support seat 140 and the metering cylinder 130 can be movably connected, for example, the spiral support seat 140 can be sleeved on the front end of the metering cylinder 130, and the translational freedom and the rotational freedom around the radial direction of the spiral support seat 140 are constrained.

[0019] Reference Figure 3 The spiral support seat 140 is constructed in an annular shape, and a grid support 142 is provided inside the annular shape. The grid support 142 is used to support the front end of the spiral conveying rod 120, so the grid support 142 and the spiral conveying rod 120 are connected through a bearing 144. Any suitable bearing can be used as long as it can meet the specific application requirements. For example, it can be a rolling or sliding bearing, and specifically, a nylon sliding bearing can be used.

[0020] In the above description, the details of the technical solution of the present invention are explained. However, those skilled in the art can understand that the present invention is not limited to the specific details listed in the above embodiments, but can be varied within the scope defined by the claims.

Claims

1. A powder weighing screw metering device, comprising a drive shaft and a screw conveying rod, characterized in that: The front end of the driving shaft is fixedly connected to the rear end of the spiral conveying rod, wherein the driving shaft and the spiral conveying rod are detachably fixedly connected, and the driving shaft and the spiral conveying rod are fixed by bolts and nuts. The device further includes a metering cylinder sleeved on the front part of the spiral conveying rod, wherein the front end of the metering cylinder is provided with a spiral support seat, and the spiral support seat is constructed in an annular shape and has a grid support located at the outlet of the metering cylinder.

2. The powder weighing screw metering device according to claim 1, characterized in that: The grid support is movably connected to the spiral conveying rod through a bearing.

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