A rotating crucible stand for constant weight cooling

Abstract

The utility model discloses a kind of rotary crucible racks for constant weight cooling, comprising: the bottom support of the circular meshed openwork structure of the outer ring ring and stainless steel strip, it is the peripheral frame vertically welded on the outer ring ring of bottom support, the column vertically fixed in the center position of bottom support, the rotating assembly of setting and the crucible tray with circular hole on column are set up.The rotary crucible rack set by the utility model has the advantages of convenient storage, quick positioning, high stability, prevention of dumping, easy to take, labor-saving operation and reasonable mechanism, and efficient cooling.

Description

Technical Field

[0001] This utility model belongs to the field of experimental equipment technology, specifically relating to a rotating crucible rack for constant weight cooling. Background Technology

[0002] In the analysis and testing of samples in the food, pharmaceutical, and chemical industries, the detection of ignition residue is a common process. This process requires repeatedly placing the crucible between a high-temperature ashing furnace and a desiccator for cooling and weighing. Currently, crucibles are usually placed directly and haphazardly inside the desiccator. This method has significant drawbacks: First, it is disorderly: it is difficult to quickly locate crucibles with specific numbers, and the desiccator lid needs to be opened for a long time when searching, causing the crucibles to absorb moisture, affecting the accuracy of constant weight and experimental efficiency; second, it is prone to tipping: during movement and handling, crucibles are prone to tipping over, causing samples to spill and destroying experimental data; third, it is inconvenient to handle: for large desiccators, crucibles located at the edges are difficult to handle, increasing the difficulty and risk of operation.

[0003] Therefore, there is an urgent need for a special crucible rack that can store crucibles in an orderly manner, make them easy to access, and prevent them from tipping over. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a rotating crucible rack for constant weight cooling with a reasonable structure and simple operation, so as to realize the orderly storage, rapid positioning and stable rotation of crucibles, and effectively improve the efficiency and accuracy of the testing work.

[0005] This utility model is achieved through the following technical solution: A rotating crucible holder for constant weight cooling, the rotating crucible holder comprising: Bottom support: It is a circular mesh-like hollow structure composed of an outer ring and an inner crisscrossing stainless steel strips; The outer frame is a cylindrical frame that is vertically welded to the outer ring of the bottom support. The column is vertically fixed at the center of the bottom support. Rotating assembly: It is sleeved on the column; Crucible tray: It is a circular solid plate, fixedly connected to the rotating assembly and located inside the outer frame. The crucible tray has circular holes evenly distributed in a ring for placing crucibles.

[0006] Furthermore, among the stainless steel strips inside the bottom support, the two stainless steel strips located in the central longitudinal and transverse directions are the thickest support strips, and the remaining stainless steel strips gradually shorten from the center to the periphery. The ends of all stainless steel strips are welded and fixed to the outer ring.

[0007] Furthermore, handles are symmetrically arranged on both sides of the upper part of the outer frame.

[0008] Furthermore, a rotating base is provided at the center of the bottom support, and the column is vertically welded to the rotating base.

[0009] Furthermore, the rotating assembly includes a rotating rod and a pair of bearings; the pair of bearings are respectively fixed to the upper and lower ends of the column by their inner rings; the inner wall of the rotating rod is fixedly connected to the outer ring of the bearings; the center of the crucible tray is sleeved and fixed to the lower part of the rotating rod.

[0010] Furthermore, the bearing is a deep groove ball bearing, comprising an inner ring, an outer ring, and balls disposed between the inner ring and the outer ring.

[0011] Furthermore, each circular hole on the crucible tray is marked with a unique number.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1) Orderly storage and rapid positioning: The crucible tray has numbered holes, which enables the crucible to be stored in a fixed location. Experimenters do not need to open the desiccator lid for a long time to search for it. They can simply rotate the tray to bring the target crucible to their attention, which greatly improves work efficiency and avoids the crucible from absorbing moisture due to prolonged exposure.

[0013] 2) High stability and prevent tipping: The crucible is inserted into a specially designed hole and is firmly fixed in place. Whether moving the desiccator or picking up a single crucible, it can effectively prevent tipping and sample spillage, ensuring the accuracy of experimental data.

[0014] 3) Easy to pick up and easy to operate: The rotating function makes it easy to rotate the crucible to an easy-to-pick-up position from any position. Combined with the handles on both sides, the movement and operation of the entire device are very convenient.

[0015] 4) Rational structure and efficient cooling: The mesh-like perforated structure of the bottom support greatly increases the airflow area, which is conducive to the rapid dissipation of heat from the bottom and shortens the cooling time. The outer frame ensures ventilation while effectively blocking direct airflow and external dust intrusion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the bottom support of this utility model; Figure 2 This is a schematic diagram of the structure of the crucible tray of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the rotating component structure of this utility model; In the diagram, 1-bottom support, 101-outer ring, 102-stainless steel strip, 103-support strip, 2-outer frame, 3-column, 4-crucible tray, 401-circular hole, 5-handle, 6-rotating base, 7-rotating rod, 8-bearing, 801-inner ring, 802-outer ring, 803-ball bearing. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings in order to better understand the technical solution.

[0018] like Figures 1 to 3 As shown, the present invention provides a rotating crucible rack for constant weight cooling, which mainly consists of a bottom support 1, an outer frame 2, a column 3, a crucible tray 4, and a rotating assembly.

[0019] The bottom support 1 is the basic supporting component of the whole structure, consisting of an outer ring 101 and stainless steel strips 102 welded crisscrossingly within it, forming a mesh-like perforated structure. The two central stainless steel strips are the thickest, serving as support strips 103, while the remaining strips gradually shorten from the center to the periphery. The apexes of all stainless steel strips 102 are welded to the outer ring 101. The bottom support 1 serves to support the overall structure; the perforated design helps cool the crucible and prevents heat accumulation; in addition, the circular design allows it to fit well into a conventional circular dryer, maximizing the use of the dryer space and avoiding waste.

[0020] The outer frame 2 is a cylindrical stainless steel frame, whose bottom is welded to the outer ring 101 of the bottom support 1. Handles 5 are symmetrically welded to both sides of the upper part of the outer frame 2 for safe handling of the entire crucible rack. When crucibles are successively removed from the ash furnace and placed in the crucible rack, or during the process of removing crucibles from the crucible rack and placing them in the ash furnace, the outer frame 2 can prevent surrounding wind from blowing onto the crucibles placed inside the rack, avoiding dust and other environmental contaminants from entering the crucibles and preventing ash from being blown out of the crucibles.

[0021] The column 3 is vertically welded to the rotating base 6. The rotating assembly consists of a rotating rod 7 and a pair of bearings 8. The bearings 8 are standard deep groove ball bearings, with their inner rings 801 tightly fitted or welded to the upper and lower ends of the column 3. The outer rings 802 of the bearings are fixed to the inner wall of the rotating rod 7. The lower end of the rotating rod 7 is reliably connected to the crucible tray 4 by welding or fasteners.

[0022] The crucible tray 4 is a solid circular plate with a radius slightly smaller than that of the bottom support 1 to ensure smooth rotation within the outer frame 101. Multiple circular holes 401 are evenly distributed around the crucible tray 4 for holding the crucibles. Each hole is engraved with a unique number (e.g., 1, 2, 3...) to facilitate the positioning and management of the crucibles.

[0023] The working principle of this invention is as follows: A cooled crucible is inserted into the corresponding numbered circular hole 401 in the crucible tray 4. When a specific crucible needs to be retrieved, the edge of the crucible tray 4 is gently pushed by hand, or the crucible is directly moved. The crucible tray 4 will then easily rotate around the column 3 via the rotating component, bringing the target crucible to the user for direct removal. The entire device can be smoothly placed into or removed from the desiccator using the handle 5.

Claims

1. A rotating crucible rack for constant weight cooling, characterized in that, The rotating crucible holder includes: Bottom support (1): It is a circular mesh hollow structure composed of an outer ring (101) and an inner crisscrossing stainless steel strip (102). A rotating base (6) is provided at the center of the bottom support (1). The outer frame (2) is a cylindrical frame vertically welded to the outer ring (101) of the bottom support (1); Column (3): It is vertically fixed to the center of the bottom bracket (1) and vertically welded to the rotating base (6). Rotating assembly: It is sleeved on the column (3); Crucible tray (4): It is a circular solid plate, fixedly connected to the rotating assembly and located inside the outer frame (2). The crucible tray (4) has circular holes (401) evenly distributed in a ring for placing crucibles. The rotating assembly includes a rotating rod (7) and a pair of bearings (8); the pair of bearings (8) are respectively fixed to the upper and lower ends of the column (3) by their inner rings; the inner wall of the rotating rod (7) is fixedly connected to the outer ring of the bearings (8); the center of the crucible tray (4) is fixedly fitted to the lower part of the rotating rod (7).

2. The rotating crucible rack for constant weight cooling as described in claim 1, characterized in that, Among the stainless steel strips inside the bottom support (1), the two stainless steel strips located in the central longitudinal and transverse directions are the thickest support strips (103), and the remaining stainless steel strips gradually shorten from the center to the periphery. The ends of all stainless steel strips (102) are welded and fixed to the outer ring (101).

3. The rotating crucible rack for constant weight cooling as described in claim 1, characterized in that, Handles (5) are symmetrically arranged on both sides of the upper part of the outer frame (2).

4. The rotating crucible rack for constant weight cooling as described in claim 1, characterized in that, The bearing (8) is a deep groove ball bearing, including an inner ring (801), an outer ring (802) and balls (803) disposed between the inner ring (801) and the outer ring (802).

5. A rotating crucible rack for constant weight cooling as described in claim 1, characterized in that, Each circular hole (401) on the crucible tray (4) is assigned a unique number.

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