Spiral sampling head for photovoltaic glass silica sand raw material automatic sampler

Abstract

The utility model relates to an automatic bulk silica sand raw material sampling device for photovoltaic glass production, in particular to a spiral sampling head of an automatic silica sand sampler, which is provided with a metal outer spiral barrel and a macromolecular inner spiral rod sleeved in the metal outer spiral barrel, optimizes the size structure of the spiral rod, increases the effective size of a working surface, and improves the sampling efficiency. The iron element pollution caused by a traditional sampling head to a sample is overcome, meanwhile, the abrasion resistance of a sampling head system is improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic sampling of bulk ore sand raw materials, and particularly relates to a spiral sampling head used for an automatic sampler of photovoltaic glass silica sand raw materials. Background Art

[0002] In the production of photovoltaic rolled glass, silica sand is the largest raw material, accounting for about 70%. The quality of silica sand raw materials is crucial to the production of photovoltaic glass, so the incoming inspection of silica sand raw materials is an important part of photovoltaic glass production. In order to ensure the openness and transparency of the silica sand sampling process and reduce human intervention in the sampling process, photovoltaic glass manufacturers gradually use fully automatic samplers to replace manual sampling for silica sand incoming inspection sampling, and the spiral sampling head responsible for extracting samples is a key component of the fully automatic sampler. Because it is in direct contact with the silica sand raw materials, the material cannot cause secondary contamination to the silica sand sample, especially the introduction of iron elements, which will cause deviations in the inspection data; it must also have sufficient strength and wear resistance to extend the service life and reduce the cost of using the sampling equipment.

[0003] Traditional spiral sampling heads are mostly made of carbon steel or stainless steel, which will introduce more than 1000PPM of iron pollution during use, and are completely unable to meet the technical requirements of photovoltaic silica sand sampling. In addition, due to the high hardness and small particles of silica sand, it causes serious wear and tear on the equipment, and the service life of the sampling head is generally not high.

[0004] In view of the above problems, certain measures need to be taken to improve them. It is necessary to overcome the iron contamination of the sample caused by the sampling head, and at the same time enhance the anti-wear performance of the equipment and extend the service life of the sampling head. Summary of the invention

[0005] The purpose of the utility model is to provide a spiral sampling head for an automatic sampler for photovoltaic glass silica sand raw materials in view of the deficiencies of the above-mentioned prior art, optimize the structure of the spiral rod, increase the effective size of the working surface, extend the service life of the sampling head, and reduce the cost of use.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A spiral sampling head for an automatic sampler of photovoltaic glass silica sand raw materials comprises a metal outer spiral barrel and a polymer inner spiral rod sleeved in the metal outer spiral barrel, wherein the thread depth of the inner spiral rod is 8-12 mm and the thread width is 10-15 mm.

[0008] The outer spiral cylinder is made of brass, and the inner spiral rod is made of polyetheretherketone.

[0009] The thread depth of the inner screw rod is 9.5 mm, and the thread width is 12 mm.

[0010] The upper end of the inner spiral rod is connected to the sampling machine driving device through a key.

[0011] The upper end of the metal outer spiral cylinder is provided with a flange, and is connected to the storage bin via the flange.

[0012] The lower end of the metal outer spiral cylinder is also provided with an arc-shaped material guiding window.

[0013] The beneficial effects of the utility model are:

[0014] (1) The spiral sampling head used in the automatic sampler for photovoltaic glass silica sand raw materials is provided with a metal outer spiral barrel and a polymer inner spiral rod sleeved in the metal outer spiral barrel, and the size structure of the spiral rod is optimized to increase the effective size of the working surface. It not only overcomes the iron element contamination of the sample caused by the traditional sampling head, but also increases the wear resistance of the sampling head system and prolongs the service life of the equipment.

[0015] (2) Based on the physical and chemical characteristics of silica sand used in photovoltaic production, the material and structure of the outer cylinder and inner screw of the sampling head were optimized. Brass was used to make the outer spiral cylinder of the sampling head to ensure the overall rigidity and linearity of the sampling head. Polyetheretherketone polymer material was used to make the inner spiral rod of the sampling head. The self-lubricating and wear-resistant properties of polyetheretherketone were utilized to reduce material friction, reduce the wear of the outer spiral cylinder and spiral rod, reduce the introduction of metal impurities, and extend the service life of the sampling head.

[0016] (3) According to the actual wear of the spiral sampling head in practice, the size structure of the spiral rod is optimized and the effective size of the working surface is increased, thereby extending the service life of the sampling head and reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the outer spiral cylinder of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the inner spiral rod of the utility model;

[0019] Figure 3 It is an overall assembly drawing of the utility model. DETAILED DESCRIPTION

[0020] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] The utility model provides a spiral sampling head for an automatic sampling machine for photovoltaic glass silica sand raw materials, such as Figures 1 to 3 shown.

[0022] A spiral sampling head for an automatic sampler of photovoltaic glass silica sand raw materials comprises a metal outer spiral barrel 1 and a polymer inner spiral rod 2 sleeved in the metal outer spiral barrel 1, wherein the outer spiral barrel 1 is made of brass, and the inner spiral rod 2 is made of polyetheretherketone. The outer spiral barrel 1 of the sampling head made of brass can ensure the overall rigidity and linearity of the sampling head, while the inner spiral rod 2 of the sampling head made of polyetheretherketone polymer material can utilize the self-lubrication, high strength, and strong wear resistance of polyetheretherketone to reduce material friction, reduce the wear of the outer spiral barrel and the spiral rod, reduce the introduction of metal impurities, and greatly extend the service life of the sampling head. At the same time, the outer spiral barrel 1 made of brass cooperates with the polymer inner spiral rod 2 to prevent the contamination of the sample by iron elements.

[0023] Preferably, the thread depth of the inner screw rod 2 is 8-12 mm, and the thread width is 10-15 mm. In this embodiment, the thread depth of the inner screw rod 2 is 9.5 mm, and the thread width is 12 mm. The size of the screw rod is optimized. By increasing the thread depth, the effective size of the working surface is increased, thereby improving work efficiency. At the same time, the thread width is increased to improve the wear resistance of the screw, thereby extending the service life of the sampling head and reducing the cost of use.

[0024] During installation, the end of the inner spiral rod 2 is connected to the sampling machine drive device through a key, and the end of the metal outer spiral cylinder 1 is provided with a flange 11, and is connected to the storage bin through the flange 11. In order to facilitate feeding, the lower end of the metal outer spiral cylinder 1 is also provided with an arc-shaped material guide window 12.

[0025] The following is described in conjunction with specific embodiments:

[0026] The outer spiral tube of the sampling head is made of H62 brass tube. Figure 1 As shown, it takes into account both strength and economy, while preventing iron pollution in the sample. The copper tube wall thickness is 5mm, and a material guide window is opened at the bottom of the spiral tube.

[0027] The inner spiral rod of the sampling head is made of polyetheretherketone (PEEK) material, such as Figure 2 As shown. Polyetheretherketone (PEEK) has high mechanical strength, high temperature resistance, impact resistance, acid and alkali resistance, hydrolysis resistance, wear resistance and good fatigue resistance. It also has excellent sliding properties. It is the best material that can adapt to the acidic, strong wear and strong impact conditions of silica sand sampling. The inner screw thread is made of a whole piece of polyetheretherketone rod through machining. The high strength, wear resistance, self-lubrication and other characteristics of polyetheretherketone can significantly improve the wear resistance of the inner screw and greatly increase its service life.

[0028] During the actual use of the sampling head spiral rod, the material slides on the thread and the friction increases. Therefore, the most severely worn part of the spiral rod is usually the thread part. The utility model adopts a 9.5mm deep and 12mm wide deepened and widened thread to improve the overall wear resistance of the spiral rod and extend the service life of the inner spiral rod.

[0029] The outer spiral tube and the inner spiral rod are combined into a complete set of sampling heads, such as Figure 3 As shown. It is connected to the sampling machine drive device and the storage bin through keys and flanges respectively. During operation, the sampling head is driven by the sampling machine to descend and insert into the silica sand pile to be sampled, and at the same time, the driving device drives the inner spiral rod to rotate. The silica sand enters the spiral barrel from the lower end of the spiral barrel and the guide window, and is lifted into the sampling machine storage bin under the rotation of the inner spiral rod thread, completing the silica sand sampling work.

[0030] If the words "first", "second" and so on are used in this patent to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description, and the above words have no special meaning.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

[0032] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the protection content of the present invention.

Claims

1. A spiral sampling head for an automatic sampler of photovoltaic glass silica sand raw materials, Features: The utility model comprises a metal outer spiral cylinder and a polymer inner spiral rod sleeved in the metal outer spiral cylinder, wherein the thread depth of the inner spiral rod is 8-12 mm and the thread width is 10-15 mm.

2. A spiral sampling head for an automatic sampling machine for photovoltaic glass silica sand raw materials according to claim 1, Features: The outer spiral cylinder is made of brass, and the inner spiral rod is made of polyetheretherketone.

3. A spiral sampling head for an automatic sampling machine for photovoltaic glass silica sand raw materials according to claim 1 or 2, Features: The thread depth of the inner screw rod is 9.5 mm, and the thread width is 12 mm.

4. A spiral sampling head for an automatic sampling machine for photovoltaic glass silica sand raw materials according to any one of claims 1 to 3, Features: The upper end of the inner spiral rod is connected to the sampling machine driving device through a key.

5. The spiral sampling head for the automatic sampling machine for photovoltaic glass silica sand raw materials according to claim 4, Features: The upper end of the metal outer spiral cylinder is provided with a flange, and is connected to the storage bin via the flange.

6. A spiral sampling head for an automatic sampling machine for photovoltaic glass silica sand raw materials according to claim 4, Features: The lower end of the metal outer spiral cylinder is also provided with an arc-shaped material guiding window.

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