Chemical engineering technology sampling device

Abstract

The utility model relates to chemical engineering technical field, concretely is a kind of chemical engineering technology sampling device, including fixed frame, the upper end fixed mounting of fixed frame has motor, and the outside fixed connection of motor has mounting bracket, the right side fixed mounting of mounting bracket has controller, the backside upper end fixed connection of mounting bracket has handle, the inside connection of fixed frame has ball screw, and the upper end sleeve of ball screw has ball screw sleeve, the left and right ends fixed connection of ball screw sleeve has lifting rod. Through the heating plate in cavity can be accurately temperature-controlled (such as keep fluidity, prevent crystallization or promote reaction) to the material in sampling box, especially suitable for high viscosity liquid, solidifiable material or need heat stable chemical component analysis, pitch, resin material sampling need not worry about blocking pipeline, compared with traditional normal temperature sampling equipment, effectively avoid the problem that sample stratification is uneven or composition segregation due to temperature change, ensure that detection result is more representative.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering technology, specifically a chemical engineering sampling device. Background Technology

[0002] Chemical engineering is an engineering discipline that studies the common laws governing chemical and physical processes in the chemical industry and other process industries. These industries include not only traditional chemical manufacturing, but also modern chemical engineering encompasses bioengineering, biopharmaceuticals, and related nanotechnology. This type of modern chemical engineering has developed very rapidly in recent years, bringing great convenience to human life and profoundly impacting human lifestyles; chemical engineering requires the sampling of samples.

[0003] In chemical engineering experiments, it is often necessary to take chemical samples of chemical reagents and solutions and then send them to a precision laboratory for content determination. The chemicals that are frequently tested are mainly liquid and solid. Liquid chemicals are sampled using a rubber dropper and then sent to a collection bottle, while solid chemicals are usually sampled using tweezers.

[0004] When sampling high-viscosity materials, the high viscosity and density of the materials cause them to easily stick to the sampling device, making it difficult for them to enter the device and resulting in inconvenience and reduced sampling efficiency. To address these issues, we propose a chemical engineering sampling device. Utility Model Content

[0005] The purpose of this invention is to provide a chemical engineering sampling device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chemical engineering sampling device, comprising a fixed frame, a motor fixedly mounted on the upper end of the fixed frame, and a mounting bracket fixedly connected to the outer side of the motor; a controller fixedly mounted on the right side of the mounting bracket; a handle fixedly connected to the upper back side of the mounting bracket; a ball screw connected inside the fixed frame, with a ball sleeve fitted onto the upper end of the ball screw; lifting rods fixedly connected to the left and right ends of the ball sleeve, with a connecting plate fixedly connected to the lower end of the lifting rod; a connecting block engaged on the connecting plate; a fixing bolt inserted into the connecting plate, with a nut fitted onto the fixing bolt; a sampling box fixedly connected to the front end of the connecting block, with a cavity formed on the sampling box; a heating plate installed inside the cavity; discharge ports fixedly mounted on both the left and right ends of the sampling box, with solenoid valves fixedly mounted on the discharge ports.

[0007] Preferably, the front surface of the fixing frame is provided with scale lines.

[0008] Preferably, the rotating shaft of the motor is fixedly connected to the ball screw, and the other end of the ball screw is rotatably connected to the inner wall of the fixed frame, so that the motor can drive the ball screw to rotate.

[0009] Preferably, the ball sleeve is fixedly connected to both the front and rear ends with limit sliders, and the inner wall of the fixed frame is provided with a groove that cooperates with the limit slider, so that the ball sleeve can be limited by the limit slider.

[0010] Preferably, the fixed frame has a movable groove that cooperates with the lifting rod, and there are two sets of connecting plates.

[0011] Preferably, a connecting block is engaged on one side of the two sets of connecting plates that are close to each other. The fixing bolt is inserted into the connecting plate and the connecting block. Both the connecting plate and the connecting block have threaded slots that mate with the fixing bolt. A washer is fitted on the fixing bolt, and the connecting plate and the connecting block can be fixed by the fixing bolt.

[0012] Preferably, the lower end of the sampling box has an inverted V-shaped structure, the upper end of the sampling box has a tapered structure, and the left and right sides of the lower end of the sampling box are fixedly connected with baffles with a sloping structure, making the sampling more convenient.

[0013] This utility model provides a chemical engineering sampling device, which has the following beneficial effects:

[0014] The heating plate inside the cavity allows for precise temperature control of the material in the sampling box (e.g., maintaining fluidity, preventing crystallization, or promoting reaction). It is especially suitable for the analysis of high-viscosity liquids, easily solidified substances, or chemical components that require thermal stability, such as asphalt and resin materials. There is no need to worry about clogging the pipes. Compared with traditional room temperature sampling equipment, it can effectively avoid the problem of uneven sample stratification or component segregation caused by temperature changes, ensuring that the test results are more representative.

[0015] The motor and ball screw work together to achieve micron-level displacement accuracy. With the controller programming, sampling points at any depth / position can be set to meet the needs of stratified sampling (such as gradient analysis of different liquid levels in a reactor). The synchronous movement of the lifting rod ensures that the sampling box enters and exits the material vertically, reducing the risk of cross-contamination caused by disturbance. The solenoid valve at the discharge port supports timed opening and closing and flow regulation, which can realize micro-sampling (milliliters) and also complete large-flow rapid discharge, adapting to the transition needs from laboratory pilot to pilot scale. Attached image description:

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the fixing frame of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the connecting plate and connecting block of this utility model;

[0020] Figure 4 This is a front sectional view of the sampling box of this utility model.

[0021] Figure 5 This is a top sectional view of the sampling box of this utility model.

[0022] In the diagram: 1. Fixed frame; 2. Motor; 3. Mounting bracket; 4. Controller; 5. Handle; 6. Ball screw; 7. Ball sleeve; 8. Lifting rod; 9. Connecting plate; 10. Connecting block; 11. Fixing bolt; 12. Nut; 13. Sampling box; 14. Heating plate; 15. Discharge port; 16. Solenoid valve. Detailed implementation method:

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5This utility model provides a technical solution: a chemical engineering sampling device, including a fixed frame 1, a motor 2 fixedly mounted on the upper end of the fixed frame 1, and a mounting bracket 3 fixedly connected to the outside of the motor 2. A controller 4 is fixedly mounted on the right side of the mounting bracket 3, and a handle 5 is fixedly connected to the upper back side of the mounting bracket 3. A ball screw 6 is connected inside the fixed frame 1, and a ball sleeve 7 is sleeved on the upper end of the ball screw 6. Lifting rods 8 are fixedly connected to the left and right ends of the ball sleeve 7, and a connecting plate 9 is fixedly connected to the lower end of the lifting rod 8. A connecting block 10 is engaged on the connecting plate 9, and a fixing bolt 11 is inserted into the connecting plate 9. A nut 12 is sleeved on the fixing bolt 11. A sampling box 13 is fixedly connected to the front end of the connecting block 10, and the sampling box 13... The device has a cavity with a heating plate 14 installed inside. Discharge ports 15 are fixedly installed at both ends of the sampling box 13, and solenoid valves 16 are fixedly installed on the discharge ports 15. The ball screw 6 and ball sleeve 7 require regular maintenance to ensure their proper functioning. The motor 2 can be a stepper motor driven by a pulse signal, with extremely small angular error (down to 0.01°), suitable for scenarios requiring precise positioning (such as stratified sampling). The solenoid valve 16 can be a two-position two-way / three-way solenoid shut-off valve (corrosion-resistant material), with a fluororubber sealing ring and stainless steel valve body design, resistant to high pressure (≥1MPa) and a wide temperature range (-20℃~200℃), preventing leakage of volatile materials. It is particularly suitable for highly corrosive media (acid and alkali solutions, organic solvents), ensuring zero leakage during the discharge process, avoiding cross-contamination and reducing safety hazards.

[0025] The front surface of the fixed frame 1 is provided with scale lines, which provide an intuitive linear scale reference. The operator can observe the sampling depth or height in real time. The rotating shaft of the motor 2 is fixedly connected to the ball screw 6, and the other end of the ball screw 6 is rotatably connected to the inner wall of the fixed frame 1. The motor 2 can be turned on, and the motor 2 drives the ball screw 6 to rotate through the rotating shaft. The ball screw 6 can then drive the sampling box 13 to move, so as to sample materials at different heights. The front and rear ends of the ball sleeve 7 are fixedly connected with limit sliders. The inner wall of the fixed frame 1 is provided with a groove that cooperates with the limit sliders. The limit sliders at both ends of the ball sleeve 7 are embedded in the groove of the fixed frame 1, forming a physical limit switch. When the movement reaches the limit position, it automatically blocks further movement to prevent overtravel impact damage to the equipment or cause safety accidents. The fixed frame 1 is provided with a moving groove that cooperates with the lifting rod 8. There are two sets of connecting plates 9.

[0026] Two sets of connecting plates 9 are engaged with connecting blocks 10 on their adjacent sides. Fixing bolts 11 are inserted into the connecting plates 9 and connecting blocks 10. Both the connecting plates 9 and connecting blocks 10 have threaded slots that mate with the fixing bolts 11. A washer is fitted onto the fixing bolt 11. The two sets of connecting plates 9 are quickly plugged in and out via the connecting blocks 10 and fixing bolts 11. The threaded slots ensure a repeatability error of <0.05mm. This design supports second-level switching between different functional modules (such as a standard sampling box 13 / a special sampling box 13 with heating function), meeting the needs of flexible production of multiple varieties in small batches. The washer compensates for the preload attenuation caused by vibration and maintains connection rigidity even after long-term operation. The internal structure of the sampling box 13... The lower end of the sampling box 13 has an inverted V-shaped structure, and the upper end of the sampling box 13 has a constricted structure. The left and right sides of the lower end of the sampling box 13 are fixedly connected to baffles with an inclined structure. The inverted V-shaped inclined surface causes the material to converge towards the center under the action of gravity. With the wedge angle of the baffle, more than 98% of the residual material can be automatically detached. The constricted structure forms a Venturi effect. When the lifting rod 8 drives the sampling box 13 to rise, the internal negative pressure automatically replenishes fresh material, ensuring that the sampling amount is constant each time. This feature is particularly important for powder particle size analysis. The baffles on both sides form a wedge-shaped channel, which forces the material to flow along the axial direction and avoids the stratification phenomenon caused by centrifugal force. When collecting suspensions containing particles, it can effectively retain large particle size components.

[0027] Working principle: The operator moves the sampling device to the sampling position via handle 5, sets parameters (such as sampling depth, heating temperature, etc.) via controller 4, energizes motor 2, and closes solenoid valve 16 to ensure the sampling box 13 is sealed. Motor 2 starts, driving ball screw 6 to rotate, which in turn moves ball sleeve 7 and connected lifting rod 8 downward, inserting the sampling box 13 into the chemical material to be sampled. If heating is required (e.g., to prevent material solidification), heating plate 14 heats the internal cavity of sampling box 13 according to the set temperature. After the sampling box 13 is filled with material, the motor 2 reverses and lifts the sampling box 13 into the fixed frame 1 via the lifting rod 8. The solenoid valve 16 remains closed to ensure that the material does not leak during transportation. The device is then moved above the target container, and the solenoid valve 16 is opened via the controller 4, allowing the material to be discharged from the discharge port 15. If multiple samplings are required, the sampling box 13 can be quickly replaced using the fixing bolt 11 and nut 12. The motor 2 and heating plate 14 are then turned off, and the sampling box 13 and discharge port 15 are cleaned to prepare for the next use.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chemical engineering sampling device, comprising a fixed frame (1), characterized in that: A motor (2) is fixedly installed on the upper end of the fixed frame (1), and a mounting bracket (3) is fixedly connected to the outside of the motor (2). A controller (4) is fixedly installed on the right side of the mounting bracket (3). A handle (5) is fixedly connected to the upper back side of the mounting bracket (3). A ball screw (6) is connected inside the fixed frame (1), and a ball sleeve (7) is fitted onto the upper end of the ball screw (6). Lifting rods (8) are fixedly connected to the left and right ends of the ball sleeve (7), and a lower end of the lifting rod (8) is fixedly connected to... A connecting plate (9) is provided, on which a connecting block (10) is engaged. A fixing bolt (11) is inserted into the connecting plate (9), and a nut (12) is fitted onto the fixing bolt (11). A sampling box (13) is fixedly connected to the front end of the connecting block (10), and a cavity is provided on the sampling box (13). A heating plate (14) is installed inside the cavity. Discharge ports (15) are fixedly installed on both the left and right ends of the sampling box (13), and a solenoid valve (16) is fixedly installed on the discharge port (15).

2. The chemical engineering sampling device according to claim 1, characterized in that: The front surface of the fixed frame (1) is provided with scale lines.

3. The chemical engineering sampling device according to claim 1, characterized in that: The rotating shaft of the motor (2) is fixedly connected to the ball screw (6), and the other end of the ball screw (6) is rotatably connected to the inner wall of the fixed frame (1).

4. A chemical engineering sampling device according to claim 1, characterized in that: The front and rear ends of the ball thread sleeve (7) are fixedly connected to limit sliders, and the inner wall of the fixed frame (1) is provided with a groove that cooperates with the limit slider.

5. A chemical engineering sampling device according to claim 1, characterized in that: The fixed frame (1) is provided with a moving groove that cooperates with the lifting rod (8), and the connecting plate (9) is provided with two sets.

6. A chemical engineering sampling device according to claim 5, characterized in that: The two sets of connecting plates (9) are engaged with a connecting block (10) on one side of each other. The fixing bolt (11) is inserted into the connecting plate (9) and the connecting block (10). The connecting plate (9) and the connecting block (10) are both provided with threaded slots that cooperate with the fixing bolt (11). A gasket is fitted on the fixing bolt (11).

7. A chemical engineering sampling device according to claim 6, characterized in that: The lower end of the sampling box (13) is provided with an inverted V-shaped structure, the upper end of the sampling box (13) is provided with a constricted structure, and the left and right sides of the lower end of the sampling box (13) are fixedly connected with baffles with a sloping structure.

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