Crucible tongs

Abstract

The utility model discloses a crucible clamp which comprises clamp arms and clamping parts, the clamp arms comprise a first clamp arm and a second clamp arm, the clamping parts comprise a first clamping part and a second clamping part which are located at the end of the first clamp arm and the end of the second clamp arm respectively, the first clamp arm is hinged to the second clamp arm, and the first clamping part and the second clamping part are used for clamping a crucible. Each of the first clamp arm and the second clamp arm comprises a first rod part and a second rod part, an included angle is formed between the first rod part and the second rod part, and the bottom and / or the top of the first clamping part and / or the second clamping part are / is provided with a blocking part extending inwards. According to the crucible tongs, the first rod part and the second rod part which are arranged at the included angle are arranged, so that the crucible tongs are convenient to take and place; the bottoms and / or the tops of the first clamping part and / or the second clamping part are / is provided with the blocking parts extending inwards, so that the crucible can be effectively prevented from falling off and toppling over.

Description

Technical Field

[0001] The utility model particularly relates to a crucible tongs for clamping a crucible. Background Art

[0002] Crucible tongs are used to hold and heat the crucible or take or place the crucible into a heat source (such as a gas lamp, electric furnace, crucible furnace, muffle furnace, alcohol lamp, etc.). When heating the crucible, it is used to clamp the crucible or the crucible cover. When testing the organic matter content of sludge and the concentration of volatile suspended solids in the mixed liquid, crucibles and crucible tongs are needed.

[0003] The conventional crucible tongs have a relatively simple structure and lack functional design, which makes them inconvenient to use or makes them prone to tipping or falling when clamping the crucible.

[0004] In this regard, there are also crucible tongs with improved structures. For example, patent publication number CN203542416U discloses a crucible tongs with a new structure, in which the upper ends of the left and right tongs have convex edges extending inwards to wrap around the crucible to prevent it from tipping over.

[0005] However, it cannot prevent the crucible from falling; at the same time, the clamp body is arranged in a straight line, which is inconvenient to take and put. Utility Model Content

[0006] In view of this, in order to solve the problems of the prior art, the utility model provides an improved crucible tongs, which can effectively prevent the crucible from falling and tipping over and is convenient for taking and placing.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A crucible tongs, comprising a tong arm and a clamping part, wherein the tong arm comprises a first tong arm and a second tong arm, the clamping part comprises a first clamping part and a second clamping part respectively located at the ends of the first tong arm and the second tong arm, the first tong arm and the second tong arm are hinged, the first clamping part and the second clamping part are used to clamp the crucible, the first tong arm and the second tong arm both comprise a first rod part and a second rod part, the first rod part and the second rod part are arranged at an angle, and a stopper extending inward is arranged at the bottom and / or the top of the first clamping part and / or the second clamping part. Preferably, the hinged position between the first tong arm and the second tong arm is located at the connection between the first rod part and the second rod part.

[0009] According to some preferred implementation aspects of the utility model, the bottom of the first clamping part and the second clamping part is provided with a lower stopper extending inward; and / or the top of the first clamping part and the second clamping part is provided with an upper stopper extending inward. The lower stopper is used to support the bottom of the crucible to prevent the crucible from falling; the upper stopper is used to press the crucible cover to prevent the crucible from tipping over and the crucible cover from falling.

[0010] Preferably, the lower stopper is a plate-shaped structure extending inward from the bottom surface of the clamping part, and the end surface of the plate-shaped structure is an inclined structure to facilitate entering the bottom of the crucible. The upper stopper is an arc-shaped structure to facilitate pressing the crucible cover.

[0011] According to some preferred implementation aspects of the utility model, the maximum height of the first clamping part and / or the second clamping part is greater than half of the height of the crucible, so as to increase the contact area between the clamping part and the side wall of the crucible and facilitate clamping.

[0012] According to some preferred implementation aspects of the utility model, the inner walls of the first clamping part and the second clamping part are arranged in an arc shape along their length direction; the inner side of the first clamping part and / or the second clamping part is provided with an anti-slip structure. The anti-slip structure is used to increase the friction between the clamping part and the side wall of the crucible to facilitate clamping.

[0013] The anti-skid structure is preferably an anti-skid convex strip or an anti-skid convex point. The anti-skid convex strip extends along the length direction of the first clamping part or the second clamping part; or, a special shape of anti-skid convex strip can be provided, such as an anti-skid convex strip inclined from the middle of the inner wall of the first clamping part or the second clamping part to both sides and downward, so as to better clamp.

[0014] According to some preferred implementation aspects of the utility model, the distance between the inner wall of the first clamping part and the inner wall of the second clamping part gradually decreases from top to bottom. That is, in the horizontal direction, the first clamping part and the second clamping part are arranged in an arc shape to match the horizontal direction of the outer wall of the crucible; in the longitudinal direction, the first clamping part and the second clamping part are also arranged in an arc shape to match the vertical direction of the outer wall of the crucible.

[0015] According to some preferred implementation aspects of the utility model, the inner walls of the first clamping part and the second clamping part are coated with a heat-insulating coating, which can increase friction and prevent the crucible from bursting when the crucible tongs with a lower temperature come into contact with the crucible with a higher temperature.

[0016] According to some preferred implementation aspects of the present invention, the angle is 90-150°, preferably 120°.

[0017] According to some preferred implementation aspects of the utility model, the end of the clamping portion away from the clamp arm has a clamping portion extending outwards, which can be used to clamp the crucible cover.

[0018] According to some preferred implementation aspects of the utility model, the extending direction of the clamping portion is arranged at an angle to the plane where the clamping portion is located.

[0019] According to some preferred implementation aspects of the utility model, the first clamp arm and the second clamp arm have a first handle and a second handle at one end away from the clamping portion, respectively.

[0020] Compared with the prior art, the utility model is advantageous in that: the crucible tongs of the utility model are convenient for taking and placing by arranging the first rod portion and the second rod portion arranged at an angle; the bottom and / or the top of the first clamping portion and / or the second clamping portion are provided with a blocking portion extending inwardly, which can effectively prevent the crucible from falling and tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the crucible tongs in the preferred embodiment of the utility model;

[0023] Figure 2 It is a side view structural schematic diagram of the crucible tongs in the preferred embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the top view of the crucible tongs in the preferred embodiment of the utility model;

[0025] Figure 4 This is a structural schematic diagram of an anti-slip structure in another preferred embodiment of the utility model;

[0026] Among them: clamp arm-1, first clamp arm-21, second clamp arm-22, first rod part-31, second rod part-32, clamping part-4, first clamping part-41, second clamping part-42, lower stop part-51, upper stop part-52, anti-slip structure-6, clamping part-7, first handle-81, second handle-82. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] like Figure 1-3As shown, the crucible tongs of this embodiment include a tong arm 1 and a clamping portion 4, the tong arm 1 includes a first tong arm 21 and a second tong arm 22, the clamping portion 4 includes a first clamping portion 41 and a second clamping portion 42 respectively located at the ends of the first tong arm 21 and the second tong arm 22, the first tong arm 21 and the second tong arm 22 are hinged, and the first clamping portion 41 and the second clamping portion 42 are used to clamp the crucible. The first tong arm 21 and the second tong arm 22 are rotatably connected to drive the first clamping portion 41 and the second clamping portion 42 at their ends to move away from or close to each other, so as to release or clamp the crucible.

[0029] The first clamp arm 21 and the second clamp arm 22 have a first handle 81 and a second handle 82 at one end away from the clamping portion 4. The clamping portion 4 has a clamping portion 7 extending outward at one end away from the clamp arm 1. The clamping portion 7 can be used to clamp the crucible cover. The extension direction of the clamping portion 7 is set at an angle with the plane where the clamping portion 4 is located.

[0030] The first clamp arm 21 and the second clamp arm 22 both include a first rod portion 31 and a second rod portion 32 . The hinged position between the first clamp arm 21 and the second clamp arm 22 is located at the connection between the first rod portion 31 and the second rod portion 32 .

[0031] In this embodiment, the first rod portion 31 and the second rod portion 32 are arranged at an angle of 90-150°, preferably 120° in this embodiment, for easy placement. In some embodiments, the first rod portion 31 and the second rod portion 32 are preferably arranged in an arc shape, and the arc angle formed is 120°, so as to facilitate the placement of the crucible in the drying dish.

[0032] The bottom and / or top of the first clamping portion 41 and / or the second clamping portion 42 are provided with a stopper extending inward. In this embodiment, the bottom of the first clamping portion 41 and the second clamping portion 42 are preferably provided with a lower stopper 51 extending inward, and the top is provided with an upper stopper 52 extending inward. The lower stopper 51 is used to support the bottom of the crucible to prevent the crucible from falling; the upper stopper 52 is used to press the crucible cover to prevent the crucible from tipping over and the crucible cover from falling.

[0033] Specifically, the lower stopper 51 is a plate-like structure extending inward from the bottom surface of the clamping portion 4, and the end surface of the plate-like structure is an inclined structure to facilitate access to the bottom of the crucible. The upper stopper 52 is an arc-shaped rod-like structure to facilitate pressing the crucible cover. The crucible is clamped and contained in the space formed by the upper stopper 52, the lower stopper 51, the first clamping portion 41 and the second clamping portion 42 to form a package, which can effectively prevent the crucible from falling and tipping over.

[0034] The maximum height of the first clamping portion 41 and the second clamping portion 42 is greater than half of the height of the crucible, so as to increase the contact area between the clamping portion 41 and the side wall of the crucible and facilitate clamping.

[0035] At the same time, the inner walls of the first clamping portion 41 and the second clamping portion 42 are arranged in an arc shape along the length direction thereof; the distance between the inner walls of the first clamping portion 41 and the second clamping portion 42 gradually decreases from top to bottom. That is, in the horizontal direction, the first clamping portion 41 and the second clamping portion 42 are arranged in an arc shape to match the horizontal direction of the outer wall of the crucible; in the longitudinal direction, the first clamping portion 41 and the second clamping portion 42 are also arranged in an arc shape to match the vertical direction of the outer wall of the crucible.

[0036] The first clamping portion 41 and the second clamping portion 42 are provided with an anti-skid structure 6 on their inner sides. The anti-skid structure 6 is used to increase the friction between the clamping portion 4 and the side wall of the crucible, so as to facilitate clamping. The anti-skid structure 6 is an anti-skid convex strip or an anti-skid convex point. The anti-skid structure 6 in this embodiment is an anti-skid convex strip, which extends along the length direction of the first clamping portion 41 or the second clamping portion 42.

[0037] like Figure 4 As shown, in other embodiments, anti-skid ridges of special shapes may be provided, such as anti-skid ridges inclined from the middle of the inner wall of the first clamping portion 41 or the second clamping portion 42 to both sides and downward to assist in better clamping.

[0038] The inner walls of the first clamping portion 41 and the second clamping portion 42 are coated with a heat-insulating coating. The heat-insulating coating can increase friction on the one hand, and on the other hand, can prevent the crucible from bursting when the crucible tongs with a lower temperature come into contact with the crucible with a higher temperature. Preferably, a similar anti-slip structure 6 and a heat-insulating coating are also provided on the inner wall of the clamping portion 7.

[0039] The crucible tongs of the utility model are made of (304) stainless steel. The clamping part 4 is designed as a clamping style to fit the crucible more closely and prevent it from falling. The top of the clamping part 4 is provided with an arc-shaped upper stopper 52 to prevent the crucible from tipping over or the crucible cover from falling off, and the plate-shaped lower stopper 51 prevents the crucible from falling off. The clamp arm 1 is provided with an arc angle of 120° to facilitate the taking and placing of the crucible.

[0040] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A crucible tongs, comprising a tong arm and a clamping portion, wherein the tong arm comprises a first tong arm and a second tong arm, the clamping portion comprises a first clamping portion and a second clamping portion respectively located at the ends of the first tong arm and the second tong arm, the first tong arm and the second tong arm are hinged, the first clamping portion and the second clamping portion are used to cooperate in clamping the crucible, characterized in that: The first clamp arm and the second clamp arm both include a first rod portion and a second rod portion, the first rod portion and the second rod portion are arranged at an angle, and a stop portion extending inwardly is arranged at the bottom and / or top of the first clamp portion and / or the second clamp portion.

2. The crucible tongs according to claim 1, characterized in that: The bottoms of the first clamping portion and the second clamping portion are provided with lower stoppers extending inwards; and / or, the tops of the first clamping portion and the second clamping portion are provided with upper stoppers extending inwards.

3. The crucible tongs according to claim 1, characterized in that: The maximum height of the first clamping portion and / or the second clamping portion is greater than half of the height of the crucible.

4. The crucible tongs according to claim 1, characterized in that: The inner walls of the first clamping portion and the second clamping portion are arranged in an arc shape along the length direction thereof; and an anti-slip structure is arranged on the inner side of the first clamping portion and / or the second clamping portion.

5. The crucible tongs according to claim 1, characterized in that: The distance between the inner walls of the first clamping portion and the second clamping portion gradually decreases from top to bottom.

6. The crucible tongs according to claim 1, characterized in that: The inner walls of the first clamping part and the second clamping part are coated with a heat insulation coating.

7. The crucible tongs according to claim 1, characterized in that: The angle is 90-150°.

8. The crucible tongs according to claim 1, characterized in that: One end of the clamping portion away from the clamp arm has a clamping portion extending outward.

9. The crucible tongs according to claim 8, characterized in that: The extending direction of the clamping portion is arranged at an angle to the plane where the clamping portion is located.

10. The crucible tongs according to any one of claims 1 to 9, characterized in that: The first clamp arm and the second clamp arm have a first handle and a second handle at one end away from the clamping portion, respectively.

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