Liquid sulfur sampler

Abstract

The utility model relates to the technical field of sulphur sampling, specifically a liquid sulphur sampler, one end of the sampler shell is communicated with a sampling head, a sampling assembly and a pressure relief member are arranged inside the sampler shell, a current -limiting assembly for current -limiting is equipped inside the sampling head, the sampling assembly includes a stepping motor, a lead screw, a threaded tube and a piston, a heating plate is arranged inside the sampler shell, and the sampler shell is fixedly connected with a storage battery on one side, the utility model drives the threaded tube horizontal motion of screw thread connection by the stepping motor driving lead screw rotation, drives the piston to move in the sampler shell, sulphur enters the sampling head through the sampling tube, flows into the sampler shell and completes sampling, is simple to operate, and the heating plate is arranged in the sampler shell to avoid sulphur solidification, and the device as a whole is not limited when carrying and moving.

Description

Technical Field

[0001] This utility model relates to the field of sulfur sampling technology, specifically a liquid sulfur sampler. Background Technology

[0002] Liquid sulfur is sulfur in a molten, liquid state with a temperature above 120°C. It requires specific insulated storage tanks for transport. Upon arrival at its destination, the liquid sulfur needs to be sampled and analyzed to test various indicators, necessitating the removal of the liquid sulfur from its container. A sulfur sampler is a specialized device used to obtain representative sulfur samples from the production, storage, or transportation stages. Its core function is to provide sample support for subsequent quality testing and process adjustments. A utility model patent with document number CN211576643U discloses a liquid sulfur sampling device, which includes a sampling tube, a steam pipeline and a sampling spoon. The bottom end of the sampling tube is provided with a sulfur inlet suitable for liquid sulfur to enter from a liquid sulfur pool. The upper part of the sampling tube is provided with a steam purging port. A steam control valve is provided on the steam pipeline. The inlet end of the steam pipeline is connected to an existing external steam generator, and the outlet end of the steam pipeline is connected to the steam purging port on the upper part of the sampling tube. The sampling spoon is adapted to extend from the top of the sampling tube to scoop out the liquid sulfur that has entered the sampling tube through the sulfur inlet and transfer it to a sampling tray.

[0003] The aforementioned device uses a steam pipeline to purge and heat the liquid sulfur inside the sampling tube, preventing the liquid sulfur from clogging the tube. However, its connection to the steam pipeline makes it inconvenient to carry, and frequent relocation is necessary in some scenarios. The difficulty in carrying the equipment directly reduces the number of samples collected per unit time, slowing down the overall testing progress. Therefore, there is a need to develop a liquid sulfur sampler that is easy to carry and move. Utility Model Content

[0004] To address the above technical problems, this utility model provides a liquid sulfur sampler that is easy to carry and move, thus solving the problem that existing sulfur sampling devices are inconvenient to carry and move.

[0005] To solve the above-mentioned technical problems, the present invention provides a liquid sulfur sampler, comprising a sampler housing, one end of which is connected to a sampling head. The sampler housing contains a sampling assembly and a pressure relief component. The sampling head contains a flow-limiting assembly for flow restriction. The sampling assembly includes a stepper motor, a lead screw, a threaded tube, and a piston. The stepper motor is fixedly connected to the other end of the sampler housing. The lead screw is rotatably connected inside the sampler housing. The output shaft of the stepper motor is fixedly connected to one end of the lead screw. A threaded tube is threaded onto the lead screw. The other end of the threaded tube is fixedly connected to the piston, which contacts the inner wall of the sampler housing. A guide tube is fixedly attached to one side of the piston. A limit rod is fixedly connected inside the sampler housing. The end of the guide tube is slidably sleeved on the limit rod. A heating plate is provided inside the sampler housing. A battery is fixedly connected to one side of the sampler housing.

[0006] Furthermore, a sealing ring is embedded on the outer surface of the piston.

[0007] Furthermore, the current limiting component includes a rubber ring, a movable bead, and a sampling tube. The rubber ring is fixed inside the sampling head, and the sampling tube is detachably connected inside the rubber ring. The movable bead is movably disposed on one side of the rubber ring, and two connecting pieces are fixed on one side of the movable bead. The other ends of the two connecting pieces are in contact with a compression spring fixedly connected to the inner wall of the sampling head.

[0008] Furthermore, a drain valve is connected to the lower surface of the sampler housing near the sampling head, and a through hole is provided on one side of the sampler housing.

[0009] Furthermore, the pressure relief component is connected to the outer wall of the sampler housing, and a fixing block is fixed at the lower end inside the pressure relief component. A movable plate is movably connected to the upper surface of the fixing block, and an airbag is fixed to the upper surface of the movable plate. The upper surface of the airbag abuts against the limiting plate fixedly connected inside the pressure relief component.

[0010] This utility model has the following advantages compared with the prior art:

[0011] 1. This utility model uses a stepper motor to drive the lead screw to rotate, which in turn drives the threaded tube connected by the thread to move horizontally, causing the piston to move inside the sampler housing. Sulfur enters the sampling head through the sampling tube and flows into the sampler housing to complete the sampling. The operation is simple, and a heating plate is set inside the sampler housing to prevent the sulfur from solidifying. The device does not restrict its portability and movement when used as a whole.

[0012] 2. By setting a movable bead and a rubber ring, the flow restriction on the sampling head is released during sampling. Sulfur will enter the sampling head through the sampling tube and then flow into the sampler housing to complete the sampling. After the piston stops moving, the movable bead is pushed to reset during the extension and reset of the compression spring, thereby reducing the leakage of sulfur after sampling. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the external structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the sampling head of this utility model.

[0016] Figure 4 This is a cross-sectional structural diagram of the pressure relief component of this utility model.

[0017] Figure 5 This is a cross-sectional structural diagram of the sampling head of this utility model.

[0018] In the diagram: 1. Sampler housing; 2. Sampling head; 3. Stepper motor; 31. Lead screw; 32. Threaded tube; 33. Piston; 34. Guide tube; 35. Limiting rod; 36. Sealing ring; 4. Rubber ring; 41. Movable ball; 42. Connecting piece; 43. Compression spring; 44. Sampling tube; 45. Heating plate; 5. Drain valve; 6. Pressure relief component; 61. Fixing block; 62. Movable plate; 63. Airbag; 64. Limiting plate; 7. Through hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1-5The liquid sulfur sampler shown includes a sampler housing 1, with a sampling head 2 fixedly connected to one end of the housing 1. A gripper is fixedly connected to the outside of the housing 1. A transparent window is provided on the housing 1 for observing the sampling process. A sampling assembly and a pressure relief component 6 are installed inside the housing 1. A flow-limiting assembly for flow restriction is provided inside the sampling head 2. A drain valve 5 is connected to the lower surface of the housing 1 near the sampling head 2 to facilitate the smooth discharge of the sampled sulfur from the housing 1. The sampling assembly includes a stepper motor 3, a lead screw 31, a threaded tube 32, and a piston 33. The stepper motor 3 is fixedly connected to the other end of the housing 1 via bolts. The lead screw 31 is rotatably connected to the housing 1 via bearings. The output shaft of the stepper motor 3 is fixedly connected to one end of the lead screw 31. A threaded tube 32 is threadedly connected to the lead screw 31. The length of the threaded tube 32 is approximately equal. A piston 33 is fixedly connected to one end of the threaded tube 32 near the sampling head 2. The outer edge of the piston 33 contacts the inner wall of the sampler housing 1 and can be slidably connected. Two guide tubes 34 are fixedly connected to the side of the piston 33 connected to the threaded tube 32. Two limiting rods 35 are fixedly connected to the inner wall of the end of the sampler housing 1 connected to the stepper motor 3. The ends of the guide tubes 34 are slidably sleeved on the limiting rods 35. A cavity jacket is provided on the side of the sampler housing 1 near the sampling head 2. A heating plate 45 is fixedly connected inside the cavity jacket. The heating plate 45 is an electric heating plate and is equipped with a temperature controller for temperature control. A battery is detachably connected to one side of the sampler housing 1. The battery powers the stepper motor 3 and the heating plate 45. A through hole 7 is provided on the side of the sampler housing 1 near the stepper motor 3. The through hole 7 is used to vent air when the piston 33 moves to perform sampling.

[0021] To improve sealing performance and ensure better sampling results, a sealing ring 36 is embedded on the outer surface of the piston 33. The sealing ring 36 is made of rubber and its outer ring is in contact with the inner wall of the sampler housing 1.

[0022] To ensure that sulfur does not flow out of the sampling head 2 after sampling, the flow limiting component includes a rubber ring 4, a movable bead 41, and a sampling tube 44. The rubber ring 4 is fixed inside the sampling head 2, and the sampling tube 44 is inserted into the inside of the rubber ring 4. The movable bead 41 is movably arranged on the inner side of the rubber ring 4, and two connecting pieces 42 are fixed on the inner side of the movable bead 41. The other end of the two connecting pieces 42 is in contact with the compression spring 43 fixedly connected to the inner wall of the sampling head 2.

[0023] To avoid the risks caused by excessive pressure inside the sampling device and to improve the efficiency of sulfur sampling discharge, pressure relief is performed during sulfur sampling discharge to prevent gas expansion during discharge. The pressure relief component 6 is connected to the outer wall of the sampler housing 1. A fixing block 61 is fixed at the lower end inside the pressure relief component 6. A movable plate 62 is movably connected to the upper surface of the fixing block 61. An air bladder 63 is fixed to the upper surface of the movable plate 62. The air bladder 63 is made of elastic material. The lower end of the air bladder 63 passes through the vent hole opened on the movable plate 62 and is connected to the sampler housing 1. The upper surface of the air bladder 63 is in contact with the limiting plate 64 fixedly connected inside the pressure relief component 6.

[0024] The working principle of this embodiment is as follows:

[0025] Place the sampler housing 1 in a suitable position, extend the sampling head 2 into the sulfur liquid surface, start the stepper motor 3 and heating plate 45. The stepper motor 3 drives the lead screw 31 to rotate, which in turn drives the threaded tube 32 connected to the thread to move backward, causing the piston 33 to move inside the sampler housing 1. The guide tube 34 and the limiting rod 35 can guide and limit the movement, thus ensuring the stability of the piston 33 during movement. The sealing ring 36 on the outer surface of the piston 33 can reduce the occurrence of air leakage, and the through hole 7 on the outer surface of the sampler housing 1 allows the internal air to be discharged normally to the outside. When the piston 33 moves, a negative pressure is generated inside the sampling head 2 on the left side. The negative pressure pulls the movable ball 41 to move, causing the movable ball 41 to drive the connecting piece 42 to compress the compression spring 43. At the same time, the movable ball 41... When the piston 33 separates from the rubber ring 4, the flow restriction on the sampling head 2 is released. At this time, the sulfur will enter the sampling head 2 through the sampling tube 44 and then flow into the sampler housing 1 to complete the sampling. After the piston 33 stops moving, the movable ball 41 is pushed to reset during the extension and reset of the compression spring 43, thereby reducing the leakage of sulfur after sampling. The heating plate 45 installed in the sampler housing 1 can heat the sampled sulfur, thereby reducing the solidification of the sampled sulfur. When the gas pressure inside the sampler housing 1 increases, the gas enters the pressure relief component 6, pushes the movable plate 62 on the fixed block 61 to move, and then compresses the air bag 63. At this time, the flow restriction on the fixed block 61 is released, and the gas will be discharged through the limiting plate 64, thereby reducing the damage to the device caused by excessive internal pressure. When draining, the drain valve 5 is opened, and the stepper motor 3 drives the piston 33 to move in the opposite direction, thereby pushing the sampled sulfur out through the drain valve 5, which also facilitates the carrying of the device.

Claims

1. A liquid sulfur sampler, comprising a sampler housing (1), wherein one end of the sampler housing (1) is connected to a sampling head (2), characterized in that: The sampler housing (1) is equipped with a sampling assembly and a pressure relief component (6). The sampling head (2) is equipped with a flow-limiting assembly for flow restriction. The sampling assembly includes a stepper motor (3), a lead screw (31), a threaded tube (32), and a piston (33). The stepper motor (3) is fixedly connected to the other end of the sampler housing (1). The lead screw (31) is rotatably connected inside the sampler housing (1). The output shaft of the stepper motor (3) is fixedly connected to one end of the lead screw (31). The lead screw (31) is threaded onto the lead screw (31). A threaded tube (32) is connected to the other end of the threaded tube (32), and a piston (33) is fixedly connected to the other end of the threaded tube (32). The piston (33) is in contact with the inner wall of the sampler housing (1). A guide tube (34) is fixedly connected to one side of the piston (33). A limit rod (35) is fixedly connected inside the sampler housing (1). The end of the guide tube (34) is slidably sleeved on the limit rod (35). A heating plate (45) is provided inside the sampler housing (1). A storage battery is fixedly connected to one side of the sampler housing (1).

2. The liquid sulfur sampler according to claim 1, characterized in that: The outer surface of the piston (33) is inlaid with a sealing ring (36).

3. The liquid sulfur sampler according to claim 1, characterized in that: The current limiting component includes a rubber ring (4), a movable bead (41), and a sampling tube (44). The rubber ring (4) is fixed inside the sampling head (2). The sampling tube (44) is detachably connected inside the rubber ring (4). The movable bead (41) is movably arranged on one side of the rubber ring (4). Two connectors (42) are fixed on one side of the movable bead (41). The other ends of the two connectors (42) are in contact with a compression spring (43) fixedly connected to the inner wall of the sampling head (2).

4. The liquid sulfur sampler according to claim 1, characterized in that: A drain valve (5) is connected to the lower surface of the sampler housing (1) near the sampling head (2), and a through hole (7) is provided on one side of the sampler housing (1).

5. The liquid sulfur sampler according to claim 4, characterized in that: The pressure relief component (6) is connected to the outer wall of the sampler housing (1). A fixing block (61) is fixed at the lower end inside the pressure relief component (6). A movable plate (62) is movably connected to the upper surface of the fixing block (61). An airbag (63) is fixed to the upper surface of the movable plate (62). The upper surface of the airbag (63) is in contact with a limiting plate (64) fixedly connected inside the pressure relief component (6).

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