RU188336U1 - PORTABLE MECHANIZED SAMPLER OF BULK MATERIALS - Google Patents

Abstract

The portable mechanized sampler of bulk materials refers to devices for sampling bulk material and can be used in various industries, pharmaceuticals and agriculture. The objective of the utility model is the expansion of operational properties and increased reliability. The technical result that can be obtained by using the utility model is the possibility of using a sampler in aggressive environments, reducing weight and reducing energy consumption. The task is achieved in that the mechanized sampler of bulk materials contains a drive device, a connector of the drive device and a receiving chamber with hooks for attaching sample bags, a receiving chamber with a guide plate and an outlet pipe, extension tubes of the sampler, spiral screw. In this case, the internal cavity of the sampler, sampling tubes and spiral screw are coated with a wear-resistant inert polymer material with a low coefficient of friction. The spiral auger is equipped with a cutting washer that completely encloses the inner space of the receiving chamber and does not allow the selection of material to get to the drive unit. In the central hole of the cutting washer, the shank of the spiral auger freely rotates, equipped with axially sealed polymer washers. Using the proposed sampler allows you to expand the range of sampled materials, reduce damage to the sampled material and its clogging with the material of the sampler, reduce energy consumption for sampling, increase the autonomy of the sampler, increase its service life.

Description

The utility model relates to devices for sampling bulk material and can be used in various industries, pharmaceuticals and agriculture.

A device for sampling bulk material is known - the zone sampler Burkle PowderProof http://wiegand.ru/old/catalogs/burkle/catalog burkle 0029.html for bulk materials designed for sampling bulk materials of all kinds. A feature of the sampler is the ability to sample both from all layers of the material, and from one particular zone. With the help of a sampler, samples of various bulk materials can be taken - from fine powders to large grains such as corn or peas.

The Burkle PowderProof sampler kit includes: a drive unit with a charger and 2 batteries in a portable case, a sampler tube, a spiral auger, and a brush for cleaning.

To take a sample, immerse the sampler tube in a bag / container with a rotating auger. Powder or granules enter the sample bag or bottle through an outlet. Excess sample remaining in the tube of the sampler is returned to the bag by the reverse movement of the screw.

The disadvantage of the Burkle PowderProof sampler is the inconvenience of transportation due to the long length of the sampler tube and the hard spiral screw, which is critical to the slightest distortions, the use of specialized sample bags, the difficulty of cleaning the sampler (its tube) from sample residues. Strong heating of the drive device and the shank of the spiral screw during operation is also noted, associated with significant friction of the hard spiral screw in the tube of the sampler and the friction of the sealing polymer cuff of the shank of the spiral screw insulating the material being sampled from the drive device. Increased friction causes a rapid discharge and overheating of the battery-powered drive device, wear of the internal space of the tube of the sampler and the spiral screw, which introduces the abrasion metal into the sample being taken.

The drawback of the POWDERPROOF sampler is also the limitation of the size of the sampled material from 2 to 4 mm in cross section, which is often not enough when taking samples of grain (barley, wheat - 10 mm; flax, vetch - up to 5 mm) and legumes (peas, beans up to 15 mm) cultures.

The closest analogue selected by the prototype is the design of the sampler according to the patent for utility model No. 176043 "Mechanized sampler of bulk materials" from 05.16.2017. According to a utility model, a mechanized sampler for bulk materials includes a drive device (electric or pneumatic drill or screwdriver), a connector for the drive device and a receiving chamber, a receiving chamber with an outlet pipe, extension tubes of the sampler, a flexible spiral auger with a grain cutter.

The disadvantage of this design is the friction of the metal spiral screw over the metal body of the sampler, which, like in the POWDERPROOF sampler, leads to abrasion of both parts and clogging of the sample material with metal. Another disadvantage is the rotation of the grain cutter with a spiral screw, because they are made one-piece, which leads to high friction losses, overheating and rapid discharge of the battery drive device.

Utility Model Disclosure

The technical result consists in increasing the speed and increasing the depth of sampling; weight reduction device; increase the resource and time of continuous operation of the device; elimination of the sampler body and spiral auger material getting into the sampled material, reduction of damage to the sampled material (elimination of grain crushing).

This technical result is achieved by using the following design solutions, different from the prototype:

- the internal cavity of the sampler and the spiral screw or only the internal cavity of the sampler is coated with a polymer antifriction coating (for example, fluoroplast, hard PVC (polyvinyl chloride), polyethylene, etc.);

- the grain cutter is made in the form of a washer outer and edges tightly overlapping the receiving cavity, and the shank of the spiral screw rotates freely (with a gap of at least 1 mm) in the central hole;

- on the shank of the spiral auger, the washer of the cutter is sealed with two washers made of polymer with a low coefficient of friction (fluoroplastic, PVC, polyethylene), along the outer edge of the washer of the cutter is equipped with a soft polymer (rubber, plastic) seal (sleeve);

- the outer diameter of the flexible spiral screw is less than the inner diameter of the tubes of the sampler and is in the range from 0.3 to 0.99 of the inner diameter of the tubes of the sampler;

- the sampler body and extension tubes are made of polymeric material or light non-ferrous alloys (aluminum alloys, titanium-based alloys).

According to a utility model, a mechanized sampler for bulk materials includes a drive device (electric or pneumatic drill or screwdriver), a connector for the drive device and a receiving chamber, a receiving chamber with a grain cutter and an outlet pipe, extension tubes of the sampler, a flexible spiral auger.

Brief Description of the Drawings

The essence of the utility model is illustrated by graphic materials, where in FIG. 1 the components of the sampler and the sampler assembly, in FIG. Figure 2 shows an embodiment of a flexible spiral screw with a grain cutter assembly.

In FIG. 1 shows a sampler with a different number of extension tubes, including a drive unit 1 (electric or pneumatic drill or screwdriver), a quick-release connector collar 2 of the drive device and a receiving chamber with sample bag hooks 3, a receiving chamber 4 with an outlet 5, at least at least one extension tube 6 of the sampler, the tip of the tube 7 and a flexible spiral screw 8 with a grain cutter 9.

In FIG. Figure 2 shows an embodiment of a flexible spiral screw with a grain cutter assembly, including a shaft 10 of a spiral screw 8 with faces for convenient connection to a drive device (for a chuck, quick-detachable or collet connection) (not shown), hole 11 in the shaft with a locking cotter pin ( not shown), a support removable washer 12 made of metal, sealing washers 13 made of antifriction polymeric materials, shutoff washers 14 made of metal or hard polymer, an external washer 15 of the washer o Sekatel (rubber or other soft polymer), non-removable support surface 16 (metal) and secured by welding tip 17 of the shank 8 of the screw spiral.

The sampler works as follows. Depending on the depth of sampling, choose the length of the spiral screw 8. When preparing the sampler for operation, insert the shank of the spiral screw 8 with the assembled grain cutter 9 into the cartridge of the drive unit 1 (electric or pneumatic drill or screwdriver) and clamp the cartridge. Then, a spiral screw is inserted into the receiving chamber and a quick-detachable connector clamp 2 connects the drive device 1 to the receiving chamber 4. Further, depending on the length of the spiral screw, the receiver tube is either increased by the tip of the tube 7, or by at least one extension tube 6 sampler and tube tip 7.

To conduct sampling, the tip of the sampler is introduced into a collar or container with bulk material with a rotating spiral screw. Bulk material moves through the tube into the receiving chamber 4 under the action of a rotating screw 8 and pours out through the outlet pipe 5 into the sample bag. Sample bags are attached either to the outlet pipe 5 with a special clip (both for the prototype) and for the sample bag hooks 3 attached to the clamp of the quick connector 2.

The collapsible design of the extension tubes makes it easy to clean the interior of the sampler from sample residues mechanically or by washing.

The spiral screw of the proposed sampler is made of elastic carbon galvanized steel, which allows transportation of the spiral screw in a bent state. Reducing the transport dimensions of the spiral auger is especially important with a long spiral auger (more than 1.5 m).

Claims (6)

1. A mechanized sampler of bulk materials containing a drive device, a connector of a drive device and a receiving chamber, a receiving chamber with an outlet pipe, a sampler tube, a spiral auger with a grain cutter, characterized in that the spiral auger and the internal cavity of the sampler are coated with a polymer antifriction material, a spiral shank the screw rotates freely in the grain cutter, and the outer diameter of the spiral screw is 0.3-0.99 of the inner diameter of the tubes of the sampler, while the grain cutter is made in the form of a washer with outer edges tightly overlapping the receiving cavity; on the shank of the spiral auger, the washer of the cutter is sealed with two washers made of polymer with a low coefficient of friction, along the outer edge of the washer of the cutter is equipped with a polymer seal, while the sampler additionally contains extension tubes. 2. The sampler according to claim 1, characterized in that the polymer antifriction material is fluoroplastic or solid polyvinyl chloride or polyethylene. 3. The sampler according to claim 1, characterized in that the housing of the sampler and extension tubes are made of polymer material. 4. The sampler according to claim 1, characterized in that the sampler body and extension tubes are made of aluminum alloys or titanium-based alloys. 5. The sampler according to claim 1, characterized in that thin-walled tubes of polymer antifriction material are tightly inserted inside the tubes of the sampler, and the spiral auger is made without polymer coating. .

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