A metal melt sampling lance
By designing a metal molten liquid sampling gun, employing an absorption assembly and a trigger assembly, and utilizing a quartz sampling tube to extract and cool precious metal samples at high temperatures, the problem of uneven sampling at high temperatures was solved, achieving efficient sample detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YELIAN PRECIOUS METALS CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technologies make it difficult to uniformly sample molten precious metals at high temperatures, and commonly used sampling methods such as drilling, powdering, and sawdust sampling are not applicable, resulting in insufficient high-temperature resistance of the materials.
A metal molten liquid sampling gun was designed, which uses a suction assembly and a trigger assembly in combination. It is adjusted by a threaded groove and an adjusting sleeve, and utilizes the high temperature resistance of the quartz sampling tube to achieve negative pressure extraction and rapid cooling and solidification of the sample.
It enables uniform sampling at high temperatures, facilitates sample testing after cooling, simplifies operation, and improves sampling efficiency and performance.
Smart Images
Figure CN224552797U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of metal solution sampling devices, and particularly relates to a metal molten liquid sampling gun. Background Technology
[0002] Metals are liquid in their molten state at high temperatures, which is the state in which the metal has the best overall uniformity. Sampling in the molten state is more uniform than sampling from solid metal ingots by drilling, grinding, or sawdust. However, since the molten temperature of precious metals generally exceeds 1500 degrees Celsius, very few sampling materials can meet such high temperatures. Therefore, there is an urgent need for a metal molten liquid sampling gun to solve the above problems. Utility Model Content
[0003] The purpose of this invention is to provide a metal molten liquid sampling gun to solve the problem mentioned in the background art that precious metals are in a liquid state when they are molten at high temperatures, which is the state with the best overall uniformity of the metal. Sampling in the molten state is more uniform than sampling by drilling, grinding, or sawing of solid metal ingots. However, since the temperature of precious metals in the molten state exceeds 1500 degrees, very few materials can meet the requirements of such high temperatures.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A metal molten liquid sampling gun includes a sampling gun, a threaded groove is formed inside one end of the sampling chamber, an adjusting sleeve is disposed in the threaded groove, and a suction assembly is installed inside the sampling gun. The suction assembly includes: A support rod is fixed inside the sampling chamber and passes through the middle of the adjusting sleeve; The second spring is welded and fixed at one end to the bearing rod. It relies on its rebound force to drive the piston component to move, thereby realizing the absorption of molten metal alloy. A limiting ring, welded to the other end of the second spring and sleeved on the bearing rod, can position the second spring in a stretched state; The guide rod has a hollow structure and its inner diameter matches the outer diameter of the bearing rod. It is fixed to the bottom end of the limiting ring and can drive the piston to move. The piston is fixed to one end of the guide rod and slidably connected to the inner wall of the sampling chamber. The piston is pulled by the rebound force of the second spring to create a negative pressure inside the sampling gun, which can extract molten metal.
[0005] By adopting the above technical solution, in the initial state, the second spring is in a stretched state. When the trigger assembly is pulled to release the fixing of the limiting ring, the limiting ring, the guide rod and the piston move rapidly inside the sampling gun under the action of the rebound force of the second spring, thereby generating a negative pressure inside the sampling gun. The molten metal can be extracted through the sampling tube to achieve sampling of the molten metal.
[0006] Furthermore, the sampling gun is equipped with a trigger assembly, which includes: The rotating shaft is rotatably mounted on the sampling gun and can serve as a fulcrum to rotate the trigger assembly; The lever, fixed on the rotating shaft, can be used as a point of force application by the worker; The limiting plate, which has a certain degree of toughness, is fixed to the other end of the lever and abuts against the bottom end of the limiting ring, and is used to limit the limiting ring. The first spring is fixed between the sampling gun and the lever, and can automatically reset itself after the lever is pulled.
[0007] By adopting the above technical solution, during the sampling process, the staff holds the sampling gun and inserts the sampling tube into the molten metal. By pulling the lever, the staff causes the limiting plate to rotate under the action of the rotating shaft, thereby releasing the fixing of the limiting ring. The molten metal can then be extracted by the suction assembly. After the lever is pulled, the first spring can automatically reset the lever.
[0008] Furthermore, a reset assembly is also provided on one side wall of the sampling gun, the reset assembly comprising: A lever; fixed to the guide rod and moved to drive the piston to reset; A guide groove is formed on one side wall of the sampling gun to provide a moving track for the lever.
[0009] By adopting the above technical solution, after one sampling, the lever can be used to apply external force to the guide rod, causing it to move along the guide groove and drive the piston to reset. Then, the trigger assembly can be used to limit it, which can prepare for the next sampling.
[0010] Furthermore, a sampling tube, which is a quartz tube, is inserted into one end of the sampling gun.
[0011] By adopting the above technical solution, the high temperature resistance of quartz can be used as the material of the sampling tube, which can ensure the sampling effect. At the same time, it is also convenient to break the sampling tube after the molten metal cools and solidifies, and then take out the solidified metal sample for testing.
[0012] Furthermore, a locking assembly is provided on one side of the sampling tube, the locking assembly comprising: A locking screw is threaded onto one end of the sampling gun to secure the sampling tube. A sealing ring, which is wedge-shaped and located inside one end of the sampling gun, is used to seal the sampling tube and the sampling gun.
[0013] By adopting the above technical solution, after the sampling tube is inserted into the sampling gun, the sealing ring seals it, and then the locking screw fixes it.
[0014] Furthermore, a threaded groove is formed inside one end of the sampling gun, and the adjusting sleeve is threadedly installed inside the sampling gun.
[0015] By adopting the above technical solution, the depth of the adjusting sleeve screwed into the sampling gun can be adjusted by rotating the adjusting sleeve. At the same time, one end of the adjusting sleeve can limit the movement distance of the limiting ring. Thus, the amount of molten metal absorbed can be adjusted by adjusting the position of the adjusting sleeve in the sampling gun.
[0016] Furthermore, the surfaces of both the adjusting sleeve and the locking screw are frosted.
[0017] By adopting the above technical solution, it is convenient for staff to apply external force to the adjusting sleeve and the locking screw, thus avoiding slippage.
[0018] Compared with the prior art, the beneficial effects of this utility model embodiment are as follows: This invention utilizes a combination of an aspiration assembly and a trigger assembly. The length of the piston can be adjusted via an adjustable sleeve, thereby regulating the weight of the aspirated molten metal. During sampling, pulling the trigger assembly causes the aspiration assembly to extract the molten metal through the sampling tube, allowing the metal solution to rapidly cool and solidify within the tube. Then, pliers are used to break the sampling tube containing the metal sample, and the tube is crushed to remove the metal rod. The metal rod can then be tested to determine the metal content and impurity content. This method not only provides excellent sampling results but also simplifies the operation and offers high usability. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of a metal molten liquid sampling gun provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the internal structure of the limiting ring in a molten metal sampling gun provided in this embodiment of the present invention; Figure 3This is a schematic diagram of the connection relationship between the locking component and the sampling tube in a molten metal sampling gun provided by an embodiment of this utility model; Figure 4 This is an exploded schematic diagram showing the relationship between the guide rod, the limiting ring, and the bearing rod in a molten metal sampling gun provided in this embodiment of the present invention.
[0020] The labels for the attached figures are as follows: 1. Sampling gun; 2. Adjusting sleeve; 3. Suction assembly; 301. Bearing rod; 302. Second spring; 303. Limiting ring; 304. Guide rod; 305. Piston; 4. Trigger assembly; 401. Lever; 402. First spring; 403. Rotating shaft; 403. Limiting plate; 5. Reset assembly; 501. Guide groove; 502. Lever; 6. Locking assembly; 601. Locking screw; 602. Sealing ring; 7. Sampling tube. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] like Figure 1 , Figure 2 as well as Figure 4 As shown, a molten metal sampling gun includes a sampling gun 1. A threaded groove is formed inside one end of the sampling gun 1, and an adjusting sleeve 2 is disposed within the threaded groove. A suction assembly 3 is installed inside the sampling gun 1. The suction assembly 3 includes: a support rod 301, fixed inside the sampling gun 1 and passing through the middle of the adjusting sleeve 2; a second spring 302, one end of which is welded and fixed to the support rod 301, relying on its rebound force to drive the piston component to move, thereby achieving the suction of molten metal; and a limiting ring 303, welded to the second spring 301. The other end of 02 is sleeved on the support rod 301, which can position the second spring 302 in the stretched state; the guide rod 304 has a hollow structure and its inner diameter matches the outer diameter of the support rod 301. It is fixed at the bottom of the limiting ring 303 and can drive the piston 305 to move; the piston 305 is fixed at one end of the guide rod 304 and is slidably connected to the inner wall of the sampling gun 1. The piston 305 is pulled by the rebound force of the second spring 302 to generate negative pressure inside the sampling gun 1, which can extract the molten metal.
[0023] The specific steps are as follows: In the initial state, the second spring 302 is in a stretched state. When the trigger assembly 4 is pulled to release the fixation of the limiting ring 303, the rebound force of the second spring 302 drives the limiting ring 303, the guide rod and the piston 305 to move rapidly inside the sampling gun 1, thereby generating a negative pressure inside the sampling gun 1. The molten metal can be extracted through the sampling tube 7, thus achieving the sampling of the molten metal.
[0024] like Figure 1 , Figure 2 as well as Figure 4 As shown, in one embodiment, the sampling gun 1 is provided with a trigger assembly 4, which includes: a rotating shaft 403, rotatably mounted on the sampling gun 1, which can serve as a fulcrum to rotate the trigger assembly 4; a lever 401, fixed on the rotating shaft 403, which can serve as a force application point for the operator; a limiting plate 404, which has a certain degree of toughness, fixed to the other end of the lever 401 and abutting against the bottom end of the limiting ring 303, used to limit the limiting ring 303; and a first spring 402, fixed between the sampling gun 1 and the lever 401, which can automatically reset the lever 401 after it is pulled. A reset assembly 5 is also provided on one side wall of the sampling gun 1, which includes: a lever 502, fixed to the guide rod and used to drive the piston 305 to reset; and a guide groove 501, which is opened on one side wall of the sampling gun 1 to provide a moving track for the lever 502.
[0025] The specific steps are as follows: During the sampling process, the staff holds the sampling gun 1 and inserts the sampling tube 7 into the molten metal. By pulling the lever 401, the staff causes the limiting plate 404 to rotate under the action of the rotating shaft 403, releasing the fixation of the limiting ring 303. The molten metal can then be extracted by the suction assembly 3. After pulling the lever 401, the first spring 402 can automatically reset the lever 401. After one sampling, the guide rod 304 can be subjected to external force by the lever 502, causing it to drive the piston 305 to reset along the guide groove 501. The trigger assembly 4 then limits the piston, preparing for the next sampling.
[0026] like Figures 1-3 As shown, in one embodiment: a sampling tube 7 is inserted into one end of the sampling gun 1. The sampling tube 7 is a quartz tube. A locking component 6 is provided on one side of the sampling tube 7. The locking component 6 includes: a locking screw 601, which is installed at one end of the sampling gun 1 by threads to fix the sampling tube 7. It is located inside one end of the sampling gun 1 and has a wedge-shaped structure to seal between the sampling tube 7 and the sampling gun 1.
[0027] The specific steps are as follows: The sampling tube 7 is installed, and after the sampling tube 7 is inserted into the sampling gun 1, the sealing ring 602 seals it, and then it is fixed by the locking screw 601. The high temperature resistance of quartz is used as the material of the sampling tube 7 to ensure the sampling effect. It is also convenient to break the sampling tube 7 after the molten metal cools and solidifies, and then take out the solidified metal sample for testing.
[0028] like Figure 1 and Figure 2 As shown, in one embodiment: a threaded groove is formed inside one end of the sampling gun 1, and the adjusting sleeve 2 is installed inside the sampling gun 1 by threads. The surfaces of the adjusting sleeve 2 and the locking screw 601 are both frosted.
[0029] The specific steps are as follows: The depth to which the adjusting sleeve 2 is screwed into the sampling gun 1 can be adjusted by rotating the adjusting sleeve 2. At the same time, one end of the adjusting sleeve 2 can limit the movement distance of the limiting ring 303. Thus, the amount of molten metal absorbed can be adjusted by adjusting the position of the adjusting sleeve 2 in the sampling gun 1.
[0030] In summary, the working principle of this molten metal sampling gun 1 is as follows: First, the sampling tube 7 is installed. After the sampling tube 7 is inserted into the sampling gun 1, it is sealed by the sealing ring 602 and then fixed by the locking screw 601. Next, the depth of the adjusting sleeve 2 inserted into the sampling gun 1 can be adjusted by rotating it, thereby adjusting the amount of molten metal sampled. After adjustment, the operator holds the sampling gun 1 and inserts the sampling tube 7 into the molten metal. At this time, the second spring 302 is in a stretched state. The operator pulls the lever 401, which causes the limiting plate 404 to rotate under the action of the rotating shaft 403, releasing the fixation of the limiting ring 303. When the trigger assembly 4 is pulled, the fixation of the limiting ring 303 is released. Then, under the action of the rebound force of the second spring 302, the limiting ring 303, the guide rod and the piston 305 move rapidly in the sampling gun 1, thereby generating a negative pressure inside the sampling gun 1. The molten metal can be extracted through the sampling tube 7 to sample the molten metal. The metal solution entering the sampling tube 7 will cool and solidify rapidly. Then, the sampling tube 7 containing the metal sample is clamped with pliers, the sampling tube 7 is broken, and the metal rod is taken out. The content of precious metal and impurities can be detected by the metal rod. Finally, the guide rod 304 can be subjected to external force by the lever 502, so that it drives the piston 305 to reset along the guide groove 501. Then, the trigger assembly 4 limits it, which can prepare for the next sampling.
[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A metal molten liquid sampling gun, characterized in that, Includes a sampling gun (1), one end of which has a threaded groove, and an adjusting sleeve (2) is provided inside the threaded groove. A suction assembly (3) is installed inside the sampling gun (1), and the suction assembly (3) includes: The support rod (301) is fixed inside the sampling gun (1) and passes through the middle of the adjusting sleeve (2); The second spring (302) is welded and fixed at one end to the bearing rod (301). It relies on its rebound force to drive the piston component to move, thereby realizing the absorption of molten metal. A limiting ring (303) is welded to the other end of the second spring (302) and sleeved on the bearing rod (301), which can position the second spring (302) in a stretched state; The guide rod (304) has a hollow structure and its inner diameter matches the outer diameter of the bearing rod (301). It is fixed at the bottom of the limiting ring (303) and can drive the piston (305) to move. The piston (305) is fixed at one end of the guide rod (304) and slidably connected to the inner wall of the sampling gun (1). The piston (305) is pulled by the rebound force of the second spring (302) to move, so that negative pressure is generated inside the sampling gun (1) to extract the molten metal.
2. The molten metal sampling gun according to claim 1, characterized in that, The sampling gun (1) is provided with a trigger assembly (4), the trigger assembly (4) comprising: The rotating shaft (403) is rotatably mounted on the sampling gun (1) and can serve as a fulcrum to rotate the trigger assembly (4); The lever (401) is fixed on the rotating shaft (403) and can be used as a point of force application by the worker; The limiting plate (404) has a certain degree of toughness, is fixed to the other end of the lever (401) and abuts against the bottom end of the limiting ring (303), and is used to limit the limiting ring (303); The first spring (402) is fixed between the sampling gun (1) and the lever (401) and can be automatically reset after the lever (401) is pulled.
3. A metal molten liquid sampling gun according to claim 1, characterized in that, A reset assembly (5) is also provided on one side wall of the sampling gun (1), the reset assembly (5) including: A lever (502) is fixed to the guide rod and used to drive the piston (305) to reset. Guide groove (501); formed on one side wall of the sampling gun (1), providing a moving track for the lever (502).
4. A molten metal sampling gun according to claim 1, characterized in that, The sampling gun (1) has a sampling tube (7) inserted inside one end, and the sampling tube (7) is a quartz tube.
5. A molten metal sampling gun according to claim 4, characterized in that, A locking assembly (6) is provided on one side of the sampling tube (7), and the locking assembly (6) includes: A locking screw (601) is threaded onto one end of the sampling gun (1) to fix the sampling tube (7); A sealing ring (602) is disposed inside one end of the sampling gun (1) and has a wedge-shaped structure to seal the sampling tube (7) and the sampling gun (1).
6. A molten metal sampling gun according to claim 5, characterized in that, The threaded groove is formed inside one end of the sampling gun (1), and the adjusting sleeve (2) is installed inside the sampling gun (1) by means of threads.
7. A molten metal sampling gun according to claim 6, characterized in that, The surfaces of the adjusting sleeve (2) and the locking screw (601) are both frosted.