Crucible tongs for viscometer

Abstract

The utility model relates to the technical field of viscosity detection tools, in particular to a crucible clamp for a viscometer, each clamp handle comprises a handle section and a clamping section, the clamping section comprises a long clamping arm and short clamping arms, the short clamping arms are fixedly connected to one ends, far away from a pin shaft hole, of the long clamping arms, and one ends, far away from the long clamping arms, of the two short clamping arms are supported on the inner wall of a crucible. The end portion of the short clamping arm is used for supporting and connecting a crucible, the length of the handle section is 4-6 times that of the long clamping arm, the clamping force between the two clamping sections is effectively improved, the springs are arranged to prevent the two clamping sections from being loosened accidentally, and the crucible supporting and connecting device is flexible and convenient to use, saves labor in operation, provides stable supporting and connecting for the crucible and improves the working efficiency of the crucible. High-temperature liquid in the crucible is prevented from spilling due to tipping and falling of the crucible, the distance of a high-temperature opening of the viscometer for an operator is increased, the operator is prevented from being scalded, and the working safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of viscosity detection tools, and particularly relates to a crucible tongs for a viscometer. Background Art

[0002] Crucible tongs are a common chemical test instrument, usually used to clamp crucibles, and are generally made of stainless steel or other non-combustible and difficult-to-oxidize hard materials. Crucible tongs are very commonly used in the chemical industry, and their main function is to assist in taking and sending high-temperature samples. For example, during the viscosity detection of mold powder, it is necessary to use crucible tongs to take out the high-temperature graphite crucible in the melt physical property detector at a high temperature of 1300°C, then pour the molten slag liquid in the crucible into the waste slag pool, and then put the graphite crucible into the melt physical property detector. Crucible tongs are required for operation throughout the process.

[0003] The crucible tongs used in the prior art for viscosity detection are made of stainless steel. The two tong handles are cross-fixed, the tong ends are bent upward, the length is about 40 mm, the length of the handle end is about 20 mm, the cross part is connected by a pin, the lengths of the handle section and the clamping section of the tong rod are similar, or the length of the handle section is much smaller than the length of the clamping section. During operation, to increase the stability of the crucible, only the grip force can be increased to increase the friction force. If the grip force is small, the crucible is likely to fall off, but increasing the grip force will cause uneven stress on the two tong heads of the crucible tongs. Therefore, it is very easy to cause the crucible to tip over and fall, resulting in the spillage of high-temperature liquid in the crucible, with poor safety and high requirements for operation skills; when the operator clamps the crucible, the distance from the high-temperature opening of the high-temperature viscometer is too close, and it is easy to be scalded during the process of taking and sending the crucible; during the process of taking and sending the graphite crucible, the problem that the edge of the graphite crucible may be broken due to excessive force may occur. Content of the Utility Model

[0004] The purpose of the utility model is to provide a crucible tongs for a viscometer, which is labor-saving in operation, stable in clamping the crucible, will not damage the crucible, can prevent the crucible from tipping over or falling during use, prevent the operator's hand from being scalded, improve the operation safety, and protect the safety of the operator.

[0005] To achieve the above technical effects, a crucible tongs for a viscometer of the utility model includes two tong handles, the two tong handles are symmetrically arranged, pin holes are provided on both tong handles, a pin is commonly inserted into the pin holes of the two tong handles, and the two tong handles are rotationally connected with the pin as the axis. The characteristics are as follows: each tong handle includes a handle section and a clamping section, the handle section and the clamping section are respectively arranged on the left and right sides of the pin hole, the handle section and the clamping section are coaxial, the clamping section includes a long clamping arm and a short clamping arm, the long clamping arm is coaxially and fixedly connected with the handle section, the short clamping arm is fixedly connected to the end of the long clamping arm far from the pin hole, and an included angle c is formed between the long clamping arm and the short clamping arm; the openings of the included angles c of the two clamping sections face each other, and the ends of the two short clamping arms far from the long clamping arms are supported on the inner wall of the crucible.

[0006] Further, an anti-slip sleeve is sleeved on the end of the handle section far from the pin shaft hole.

[0007] Further, a spring is connected between the two handle sections, and the two ends of the spring are respectively connected to the side walls of the two handle sections close to each other, and the spring pulls the two handle sections closer.

[0008] Further, the spring includes two protruding arms, hooks are provided on the protruding ends of the two protruding arms, hanging rings are fixedly connected to the side walls of the two handle sections close to each other, and the two hooks are respectively hooked on the two hanging rings.

[0009] Further, tooth grooves are provided on the ends of the two short clamping arms far from the long clamping arm, and the tooth grooves are attached to the inner wall of the crucible.

[0010] Further, the angle c is 135° - 130°.

[0011] Further, the length of the handle section is a, and the length of the long clamping arm is b; a is 4 to 6 times of b.

[0012] Further, convex platforms are provided on the outer wall of the anti-slip sleeve.

[0013] Further, the anti-slip sleeve is made of rubber.

[0014] The beneficial effects of the present utility model are as follows: The present utility model forms a support connection to the crucible through the end of the short clamping arm, and the length of the handle section is 4 - 6 times the length of the long clamping arm, effectively improving the clamping force between the two clamping sections. The setting of the spring prevents the two clamping sections from loosening accidentally. The present utility model is flexible and convenient to use, labor-saving in operation, provides a stable support connection to the crucible, prevents the high-temperature liquid in the crucible from spilling due to the tilting or dropping of the crucible, increases the distance between the operator and the high-temperature port of the viscometer, prevents the operator from being scalded, and ensures work safety. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model in the use state;

[0016] Figure 2 is a schematic structural diagram of the two pliers handles of the present utility model when pinched;

[0017] Figure 3 is a schematic structural diagram of the pliers handle of the present utility model;

[0018] Figure 4 is a schematic structural diagram of the spring of the present utility model;

[0019] Figure 5 is a schematic cross-sectional diagram of the front end of the short clamping arm of the present utility model;

[0020] Figure 6 This is a schematic diagram of the usage state of the present utility model.

[0021] In the figure: 1. Plier handle; 101. Handle section; 102. Pin shaft hole; 103. Clamping section; 1031. Long clamping arm; 1032. Short clamping arm; 1033. Tooth groove; 104. Hanging ring; 2. Pin shaft; 3. Spring; 301. Extended arm; 302. Hook; 4. Anti-slip sleeve. Specific embodiments

[0022] As Figures 1 - 4 shown, a crucible tongs for a viscometer of the present utility model includes two plier handles 1, the two plier handles 1 are symmetrically arranged, pin shaft holes 102 are provided on both of the two plier handles 1, a pin shaft 2 is commonly inserted into the pin shaft holes 102 of the two plier handles 1, and the two plier handles 1 are rotationally connected with the pin shaft 2 as the axis. It is characterized in that: each of the plier handles 1 includes a handle section 101 and a clamping section 103, the handle section 101 and the clamping section 103 are respectively arranged on the left and right sides of the pin shaft hole 102, the handle section 101 and the clamping section 103 are coaxial, the clamping section 103 includes a long clamping arm 1031 and a short clamping arm 1032, the long clamping arm 1031 is coaxially and fixedly connected with the handle section 101, the short clamping arm 1032 is fixedly connected to one end of the long clamping arm 1031 away from the pin shaft hole 102, and an included angle c is formed between the long clamping arm 1031 and the short clamping arm 1032; the openings of the included angles c of the two clamping sections 103 face each other, and the ends of the two short clamping arms 1032 away from the long clamping arm 1031 are supported against the inner wall of the crucible; a spring 3 is connected between the two handle sections 101, and the two ends of the spring 3 are respectively connected to the side walls of the two handle sections 101 close to each other, and the spring 3 pulls the two handle sections 101 closer; the spring 3 includes two extended arms 301, hooks 302 are provided on the extended ends of the two extended arms 301, hanging rings 104 are fixedly connected to the side walls of the two handle sections 101 close to each other, and the two hooks 302 are respectively hooked on the two hanging rings 104.

[0023] The setting of the spring 3 enables the two handle sections 101 to form a pulling force close to each other, so that the included angle c of the two clamping sections 103 supports the crucible, preventing the two plier handles 1 from loosening and causing the crucible to fall, protecting the use safety, and at the same time reducing the force applied by the operator to the handle section 101.

[0024] An anti-slip sleeve 4 is sleeved on the end of the handle section 101 away from the pin shaft hole 102, a boss is provided on the outer wall of the anti-slip sleeve 4, and the material of the anti-slip sleeve 4 is rubber; the setting of the anti-slip sleeve 4 increases the friction between the operator and the handle section 101, preventing the plier handle 1 from slipping out of the hand during use.

[0025] Tooth grooves 1033 are provided at the ends of the two short clamping arms 1032 away from the long clamping arm 1031. The tooth grooves 1033 are attached to the inner wall of the crucible. The arrangement of the tooth grooves 1033 makes the clamping of the crucible by the clamping section 103 more stable, further preventing the crucible from falling, and improving the use stability and safety of the present utility model.

[0026] When the two clamping sections 103 approach each other, the two short clamping arms 1032 deviate from each other to form a support. When the two clamping sections 103 overlap to present a "Y" shape, the support distance between the two short clamping arms 1032 is the largest, and the angle of the included angle c is 135° - 130°, which ensures the supporting stability of the crucible and avoids damaging the crucible by the clamping section 103.

[0027] The length of the handle section 101 is a, and the length of the long clamping arm 1031 is b; a is 4 to 6 times that of b; the design here is to increase the operating force moment of the operator. The length of the handle section 101 being 4 to 6 times that of the long clamping arm 1031 magnifies the operating force of the operator and improves the supporting stability of the crucible; at the same time, it increases the distance between the operator's hand and the high-temperature port of the viscometer, preventing the operator from being scalded and protecting the safety of the operator.

Claims

1. A crucible tongs for a viscometer, comprising two tongs handles (1), the two tongs handles (1) are symmetrically arranged, the two tongs handles (1) are provided with a pin shaft hole (102), a pin shaft (2) is commonly inserted into the pin shaft holes (102) of the two tongs handles (1), and the two tongs handles (1) are rotatably connected with the pin shaft (2) as an axis, characterized in that: Each of the clamp handles (1) comprises a handle section (101) and a clamp section (103); the handle section (101) and the clamp section (103) are respectively arranged on the left and right sides of the pin shaft hole (102); the handle section (101) and the clamp section (103) are coaxial; the clamp section (103) comprises a long clamp arm (1031) and a short clamp arm (1032); the long clamp arm (1031) is coaxially fixedly connected to the handle section (101); the short clamp arm (1032) is fixedly connected to one end of the long clamp arm (1031) away from the pin shaft hole (102); an angle c is formed between the long clamp arm (1031) and the short clamp arm (1032); the openings of the angle c of the two clamp sections (103) face each other; one end of the two short clamp arms (1032) away from the long clamp arm (1031) is supported on the inner wall of the crucible.

2. The crucible tongs for a viscometer according to claim 1, characterized in that: The end of the handle section (101) away from the pin hole (102) is sleeved with an anti-slip sleeve (4).

3. The crucible tongs for a viscometer according to claim 2, characterized in that: A spring (3) is connected between the two handle segments (101), and two ends of the spring (3) are respectively connected to the side walls of the two handle segments (101) that are close to each other, so that the spring (3) pulls the two handle segments (101) closer together.

4. The crucible tongs for a viscometer according to claim 3, characterized in that: The spring (3) comprises two extending arms (301), and hooks (302) are provided on the extending ends of the two extending arms (301). Hanging rings (104) are fixedly connected to the side walls of the two handle sections (101) adjacent to each other, and the two hooks (302) are respectively hung on the two hanging rings (104).

5. The crucible tongs for a viscometer according to claim 4, characterized in that: The two short clamp arms (1032) are each provided with a tooth groove (1033) on one end away from the long clamp arm (1031), and the tooth groove (1033) is fitted on the inner wall of the crucible.

6. A crucible tongs for a viscometer according to any one of claims 1 to 5, characterized in that: The angle c is 135°-130°.

7. The crucible tongs for a viscometer according to claim 6, characterized in that: The length of the handle section (101) is a, and the length of the long clamp arm (1031) is b; a is 4 to 6 times of b.

8. A crucible tongs for a viscometer according to any one of claims 2 to 5, characterized in that: A boss is provided on the outer wall of the anti-slip sleeve (4).

9. The crucible tongs for a viscometer according to claim 8, characterized in that: The material of the anti-slip sleeve (4) is rubber.

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