Dustproof device for automatically weighing coal sample

Abstract

The utility model discloses a dustproof device for automatically weighing a coal sample, which comprises a dustproof upper cover and a dustproof lower cover, the dustproof upper cover and the dustproof lower cover can be completely separated, the dustproof lower cover is placed on an electronic balance, a scale pan is arranged in the dustproof lower cover, the dustproof upper cover is arranged above the dustproof lower cover, and the scale pan is arranged on the dustproof upper cover. The scale beam can freely penetrate through the dustproof upper cover and the dustproof lower cover to be combined with the scale pan below through fixing screws, and the diameter of an upper via hole of the dustproof upper cover is slightly larger than that of the scale beam, so that the whole dustproof device completely covers the scale pan of the electronic balance. The dustproof device can effectively prevent coal sample dust from falling to the scale pan of the balance to affect the weighing result, and is simple and compact in structure, low in production cost and particularly suitable for being applied to an electronic scale for automatically weighing coal samples.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal sample weighing device technical field more specifically, relate to a dustproof device for automatic weighing of coal sample. BACKGROUND

[0002] In the current coal quality analysis field, moisture content, ash content, volatile matter, total sulfur, calorific value, etc. in coal are the main indicators of coal settlement, which directly affect the actual quotation of coal, and the importance of sample weighing in the whole process is self-evident. The automatic weighing of coal sample now involves the design of adding a scale rod on the scale pan, for example, a weighing balance with a scale rod is disclosed in Chinese patent publication No. CN220893564U, however, this brings the problem that the sample is easy to fall onto the lower scale pan during weighing, thereby affecting the accuracy of weighing.

[0003] In view of the problem, the utility model provides a dustproof device for automatic weighing of coal sample, which can effectively prevent dust from falling onto the balance scale pan and affecting the weighing result, and has a simple and compact structure. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a dustproof device for automatic weighing of coal sample, which can effectively prevent coal sample dust from falling onto the balance scale pan and affecting the weighing result, has a simple and compact structure, and is low in production cost, and is particularly suitable for application to an electronic balance for automatic weighing of coal sample.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A dustproof device for automatic weighing of coal sample, comprising a dustproof upper cover and a dustproof lower cover, the dustproof upper cover and the dustproof lower cover can be freely and completely separated, the dustproof lower cover is placed on an electronic balance, a scale pan of the electronic balance is arranged inside the dustproof lower cover, the dustproof upper cover is installed above the dustproof lower cover, a scale rod of the electronic balance can freely pass through the dustproof upper cover and the dustproof lower cover and be combined with the lower scale pan through fixing screws, and the upper through hole of the dustproof upper cover is slightly larger than the diameter of the scale rod, so that the entire dustproof device completely covers the scale pan of the electronic balance.

[0007] Preferably, the dustproof lower cover is a hollow cylindrical structure.

[0008] Preferably, the dustproof upper cover is an inverted funnel structure.

[0009] Preferably, the diameter of the cylindrical structure is greater than the diameter of the scale pan and less than the diameter of the wide mouth of the funnel structure.

[0010] Preferably, the material of the dustproof upper cover and the dustproof lower cover is stainless steel.

[0011] Preferably, when the height of the scale bar needs to be adjusted freely, the dustproof upper cover can be manually moved upward to temporarily separate the dustproof upper cover and the dustproof lower cover, and the height of the scale bar can be freely adjusted.

[0012] The present application has the advantages that:

[0013] In view of the problem that coal sample dust is easy to fall on the scale pan during automatic weighing, the present application provides a dustproof device for automatic weighing of coal samples, the scale pan is arranged in the interior of the dustproof lower cover, the dustproof upper cover and the dustproof lower cover below can be completely separated, the scale bar can freely pass through the dustproof upper cover and the scale pan of the electronic balance below and be combined together through fixing screws, so that the dustproof upper cover can be moved upward to freely adjust the height of the scale bar, and the electronic balance has the dustproof function, the accuracy of the coal sample weighing work is ensured, and in addition, the dustproof device has simple and compact structure and low production cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of an electronic balance structure for automatic weighing of coal samples in the prior art;

[0015] Figure 2 is a schematic view of a dustproof device structure for automatic weighing of coal samples in the present application;

[0016] BRIEF DESCRIPTION OF DRAWINGS:

[0017] 1. scale bar; 2. scale pan; 3. dustproof device; 4. dustproof upper cover; 5. dustproof lower cover. DETAILED DESCRIPTION

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond the specific details set forth herein, and similar improvements can be made by those skilled in the art without departing from the spirit and scope of the present application, and therefore the present application is not limited to the specific implementations disclosed below.

[0019] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] like Figure 1 As shown, the existing electronic balance for automatic coal sample weighing includes a weighing beam 1 and a weighing pan 2 below it. The weighing beam 1 and the weighing pan 2 can be fixedly connected by bolts. The height of the weighing beam 1 can be freely adjusted. Although the area of ​​the weighing pan 2 below the weighing beam 1 is relatively small compared to that of a typical electronic weighing pan, its weighing operation is still easily affected. This leads to the problem that the sample is easy to fall onto the weighing pan below during the coal sample weighing process, thus affecting the accuracy of the weighing.

[0022] Regarding the aforementioned technical issues, such as Figure 2 As shown, this utility model improves upon the design of a dustproof device 3 for automatic coal sample weighing. The dustproof device 3 includes a dustproof upper cover 4 and a dustproof lower cover 5, which can be completely separated. The dustproof lower cover is placed on the electronic balance, and the weighing pan 2 is located inside the dustproof lower cover 5. The dustproof upper cover 4 is installed above the dustproof lower cover 5. The weighing rod 1 can freely pass through the dustproof upper cover 4 and the dustproof lower cover 5 and is combined with the weighing pan 2 below by fixing screws. The upper through hole of the dustproof upper cover 4 is slightly larger than the diameter of the weighing rod 1, so that the entire dustproof device 3 completely covers the weighing pan 2 of the electronic balance, preventing dust falling from the weighing rod 1 from affecting the measurement results of the weighing pan 2.

[0023] In another embodiment, the dustproof lower cover 5 is preferably a hollow cylindrical structure, and the dustproof upper cover 4 is preferably an inverted funnel-shaped structure. The diameter of the cylindrical structure is larger than the diameter of the weighing pan 2 and smaller than the diameter of the wide opening on the funnel-shaped structure, so that the downward-facing wide opening can abut and seal with the top of the cylindrical structure, thereby separating and sliding the dust to the periphery of the weighing pan 2 when the coal sample dust falls, and avoiding unnecessary accumulation of dust on the dustproof device.

[0024] In another embodiment, the dustproof top cover and the dustproof bottom cover are preferably made of stainless steel.

[0025] In another embodiment, since the fixing screw between the weighing rod 1 and the weighing pan 2 is located inside the dustproof device 3, and the dustproof cover 4 covers the fixing screw inside, after the dustproof cover 4 and the dustproof cover 5 are set to be completely separable, the dustproof cover 4 can be moved upward, and the height of the weighing rod 2 can be adjusted manually to adjust the height of the crucible on the weighing rod 1.

[0026] Furthermore, the advantages of the dustproof device for automatic coal sample weighing in this invention include:

[0027] 1. The coal sample is isolated by physical isolation, the dustproof upper cover and the dustproof lower cover can be completely separated, the dust is isolated at the same time without affecting the height adjustment and installation of the scale beam.

[0028] 2. The dust is separated and slides to the periphery of the scale pan when the coal sample dust falls through the cooperation of the cylindrical structure of the dustproof lower cover and the funnel-shaped structure of the dustproof upper cover, and unnecessary accumulation of dust on the dustproof device is avoided.

[0029] 3. The device is low in improvement cost and easy to realize.

[0030] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0031] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, on the premise of not departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A dust-proof device for automatic coal sample weighing, characterized in that, The dustproof device comprises a dustproof upper cover and a dustproof lower cover, the dustproof upper cover and the dustproof lower cover are freely and completely separated, the dustproof lower cover is placed on an electronic balance, a scale pan of the electronic balance is arranged in the dustproof lower cover, the dustproof upper cover is arranged above the dustproof lower cover, a scale rod of the electronic balance is freely and fixedly combined with the scale pan below through the dustproof upper cover and the dustproof lower cover through a fixing screw, and an upper through hole of the dustproof upper cover is slightly larger than a diameter of the scale rod, so that the dustproof device completely covers the scale pan of the electronic balance.

2. The dustproof device for automatic weighing of a coal sample according to claim 1, characterized in that, The dustproof lower cover is in a hollow cylindrical structure.

3. The dustproof device for automatic weighing of a coal sample according to claim 2, characterized in that, The dustproof upper cover is in an inverted funnel structure.

4. The dustproof device for automatic weighing of a coal sample according to claim 3, characterized in that, The dustproof upper cover is in an inverted funnel structure.

5. The dustproof device for automatic weighing of a coal sample according to claim 1, characterized in that, The dustproof upper cover is in an inverted funnel structure.

6. The dustproof device for automatic weighing of a coal sample according to claim 1, characterized in that, The dustproof upper cover and the dustproof lower cover are made of stainless steel. When the height of the scale rod needs to be freely adjusted, the height of the scale rod is adjusted by manually moving the dustproof upper cover upward.

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