Continuous crystallization type intelligent detection device based on three-stage vacuum flash cooling

Abstract

The application belongs to the technical field of crystallization intelligent detection, and particularly relates to a continuous crystallization type intelligent detection device based on three-stage vacuum flashing cooling, a flow guiding and stabilizing mechanism is arranged between a three-stage vacuum flashing continuous crystallization mechanism and an intelligent detection probe, through mutual cooperation of a sleeve, a ball, a flow guiding pipe provided with a spiral groove and an inclined groove and a conical cylinder, one-way continuous rotation of a single motor is utilized to drive the flow guiding pipe to automatically reciprocate, the flow through gap between the flow guiding pipe and the conical cylinder is periodically changed, and thus controllable periodic pulse flow is formed in the detection branch. The application can automatically remove crystal accumulation in a probe window, dead angle deposition particles and attached bubbles through pulse flow without disturbing the steady flow field of a main tank, simultaneously buffers high-speed slurry impact, avoids secondary fine crystals caused by broken crystals, greatly improves online particle detection precision and data stability, and has simple structure, low energy consumption and adaptability to continuous crystallization intelligent detection working conditions.

Description

Technical Field

[0001] This invention belongs to the field of intelligent crystallization detection technology, specifically relating to a continuous crystallization intelligent detection device based on three-stage vacuum flash cooling. Background Technology

[0002] Current detection methods often employ a constant flow pipeline to allow the slurry to flow through the detection probe at a constant low velocity, in order to reduce turbulence interference and ensure stable detection. However, a long-term constant low-velocity flow field has significant drawbacks: the stable slurry flow velocity easily causes crystal buildup at the probe window and material accumulation in sampling dead zones. At the same time, bubbles generated by vacuum flash evaporation are prone to adhering to the optical window, leading to data drift, distortion of fine crystal counts, and poor sample representativeness, which seriously affects the accuracy of online detection.

[0003] To address issues such as scaling at the window, deposition in dead zones, and bubble interference, existing technologies propose employing a periodic pulsed flow self-cleaning structure. This structure uses fluctuating flow rates to flush and remove scale from the window. Typical existing technologies are as follows: Patent CN112485165A discloses an online crystallization measurement device that uses a pump to start and stop, creating a pulsed slurry flow through the pipeline. This structure relies on frequent pump starts and stops to achieve flow rate fluctuations, resulting in high energy consumption and significant equipment wear. Furthermore, the pulsed flow disturbances are easily transmitted back into the crystallization tank, disrupting the stable flow field inside the tank and inducing secondary fine crystals. Simultaneously, the high-speed slurry directly impacts the probe, easily breaking the crystals and producing false fine crystals, leading to poor detection stability.

[0004] Patent CN110259836A discloses a conical slit throttle that uses hydraulically driven reciprocating motion of a conical valve core to achieve gap changes and pulse flow. This solution requires a complete hydraulic system, which is costly, complex to maintain, and poses a risk of leakage. Furthermore, the hydraulic reversing response is lagging, the pulse impact is large, and the water flow disturbance is severe, easily causing significant fluctuations in the detection curve. It also requires long-term shielding of the detection data, making continuous and accurate monitoring impossible.

[0005] In summary, existing pulse self-cleaning detection devices generally suffer from technical defects such as complex driving structures and high energy consumption, large pulse disturbances that easily disrupt the crystallization flow field, high-speed scouring that causes fragile crystals, inability to simultaneously achieve flow stabilization and self-cleaning, and inability to adjust pulse intensity in stages. Traditional fixed flow stabilization structures offer only one adjustment method, cannot adapt to alternating high and low pulse flow rates, and cannot further balance the circumferential flow velocity, making it difficult to achieve both detection accuracy and process stability.

[0006] To address the shortcomings of existing technologies, this invention provides a continuous crystallization intelligent detection device based on three-stage vacuum flash cooling. Through a single motor driving in one direction and the combination of spiral and inclined grooves, the guide tube automatically reciprocates, causing the gap between the guide tube and the conical cylinder to change periodically, generating a controllable pulse flow. Simultaneously, with the addition of an adjustable baffle plate and a wedge-shaped eccentric flow stabilization structure, it achieves the dual effects of pulse flushing descaling and a stable and controllable flow field. This effectively eliminates window crystal accumulation, dead-angle deposition, and bubble interference, preventing crystal breakage and flow field disturbance, and significantly improving the accuracy and stability of online crystallization detection. Summary of the Invention

[0007] The purpose of this invention is to provide a continuous crystallization intelligent detection device based on three-stage vacuum flash cooling, so as to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuous crystallization intelligent detection device based on three-stage vacuum flash cooling, comprising a three-stage vacuum flash continuous crystallization mechanism and an intelligent detection probe, wherein a guide plate is provided between the three-stage vacuum flash continuous crystallization mechanism and the intelligent detection probe; the surface of the guide plate is provided with a sliding hole, and a groove is provided in the sliding hole; a guide tube is slidably connected in the sliding hole; a boss is provided on the outer side of the guide tube, and the boss is slidably connected to the groove of the sliding hole; a sleeve is fitted on the outer wall of the guide tube; a sleeve is integrally formed on one side of the guide plate; the sleeve is rotatably connected in the sleeve; a ball is slidably connected to the inner wall of the sleeve; a spiral groove is provided on the outer side of the guide tube, and the ball is slidably connected in the spiral groove; a conical cylinder is integrally formed at one end of the sleeve, and the conical cylinder is inserted into the guide tube; the maximum outer diameter of the conical cylinder is equal to the inner diameter of the guide tube.

[0009] The present invention further illustrates that the outer side of the sleeve is integrally formed with a toothed disc, and the toothed disc is connected to an external drive motor via gear transmission.

[0010] The present invention further illustrates that the outer side of the guide tube is provided with a plurality of inclined grooves, and a plurality of spiral grooves are also provided, and the spiral grooves and inclined grooves are interconnected and evenly distributed around the guide tube.

[0011] The present invention further illustrates that the ball is tumbling connected within the inclined groove, and the inclination of the inclined groove is greater than that of the spiral groove.

[0012] The present invention further illustrates that the end of the guide pipe is rotatably connected to a drain pipe, and the inner wall of the drain pipe and the inner wall of the guide pipe are both integrally formed with three baffles, and the six baffles are evenly distributed; the outer wall of the drain pipe is integrally formed with a toothed plate, and the toothed plate is gear-driven with the external drive motor.

[0013] The present invention further explains that the rotational speed of the toothed disc includes medium speed and low speed, and at low speed, the toothed disc maintains the initial position, while at medium speed, the toothed disc rotates 180 degrees.

[0014] The present invention further illustrates that a through hole is provided on one side of the sliding hole, and a push rod is slidably connected in the through hole. The lower end of the push rod is spherical. The upper end of the push rod is in contact with the bottom surface of the sleeve, and the lower end is in contact with the upper surface of the toothed plate. A wedge block is integrally formed on the upper side of one side of the toothed plate. After the toothed plate rotates, the upper surface of the wedge block is in contact with the lower end of the push rod.

[0015] The present invention further illustrates that there are gaps at the rotatable connection between the sleeve and the tube, as well as between the outer wall of the guide tube and the inner wall of the sleeve.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: This invention achieves automatic reciprocating motion of the guide pipe and generates periodic pulse flow through a single motor unidirectional drive combined with a spiral groove and inclined groove structure. It eliminates the need for a hydraulic reciprocating mechanism or frequent start-stop of the pump, resulting in a simple structure, lower energy consumption, lower operating costs, and good equipment stability.

[0017] This invention utilizes a controllable pulse current to periodically self-clean the probe's detection area, effectively removing sapphire window crystal deposits, dead-angle deposits in branch circuits, and interference from vacuum flash bubbles, eliminating detection data drift, and significantly improving the accuracy and repeatability of online detection.

[0018] This invention features a baffle buffer structure with switchable angles, which can adaptively stabilize the flow according to the pulse intensity. While ensuring the self-cleaning and flushing effect, it buffers the impact of high-speed slurry, avoids crystal shearing and breakage, and eliminates the generation of artificial secondary fine crystals.

[0019] This invention achieves slight eccentricity adjustment of the conical cylinder through a wedge-shaped block pushing structure, optimizes the circumferential velocity distribution of the slurry, eliminates local high-speed jets, and makes the flow field more uniform and stable during the pulse stage, thereby further improving the detection accuracy. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the guide plate of the present invention; Figure 3 This is a half-sectional view of the present invention; Figure 4 This is a plan view of the present invention; Figure 5This is an exploded view of the present invention; Figure 6 This is a schematic diagram of the installation method between the guide pipe and the drain pipe of the present invention; In the diagram: 1. Guide plate; 2. Guide pipe; 21. Spiral groove; 22. Inclined groove; 3. Sleeve; 31. Ball bearing; 32. Conical cylinder; 33. Gear disc; 4. Sleeve; 5. Drain pipe; 51. Gear plate; 52. Wedge block; 6. Baffle plate; 7. Top rod. Detailed Implementation

[0021] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-6 The present invention provides a technical solution: a continuous crystallization intelligent detection device based on three-stage vacuum flash cooling, including a three-stage vacuum flash continuous crystallization mechanism and an intelligent detection probe, wherein a guide plate 1 is provided between the three-stage vacuum flash continuous crystallization mechanism and the intelligent detection probe; The surface of the guide plate 1 is provided with a sliding hole and a groove is provided in the sliding hole. The guide tube 2 is slidably connected in the sliding hole. The outer side of the guide tube 2 is provided with a boss and is slidably connected to the groove of the sliding hole through the boss. The outer wall of the guide tube 2 is fitted with a sleeve 3. A sleeve 4 is integrally formed on one side of the guide plate 1. The sleeve 3 is rotatably connected in the sleeve 4. The inner wall of the sleeve 3 is slidably connected with a ball bearing 31. The outer side of the guide tube 2 is provided with a spiral groove 21. The ball bearing 31 is slidably connected in the spiral groove 21. One end of the sleeve 3 is integrally formed with a tapered cylinder 32, and the tapered cylinder 32 is inserted into the guide tube 2. The maximum outer diameter of the tapered cylinder 32 is equal to the inner diameter of the guide tube 2. The slurry enters the other side of the guide plate 1 through the guide pipe 2 and passes through the intelligent detection probe. The probe performs real-time detection on the crystals inside the slurry. During the detection process, the sleeve 3 rotates inside the sleeve 4 and drives the ball 31 to rotate, causing the ball 31 to roll in the spiral groove 21 and generate axial force, thereby pushing the guide pipe 2 to move. After the guide pipe 2 moves, the flow velocity between its inner wall and the outer wall of the conical cylinder 32 is adjusted, thereby adjusting the flow velocity of the slurry through the probe, making the flow field stable and impact-free, preventing crystal particles from colliding with the sapphire window and generating noise interference, ensuring that the particle size detection value is stable without jumps and has higher measurement accuracy, while avoiding crystal particles from breaking due to high-speed collisions.

[0023] The outer side of the sleeve 3 is integrally formed with a gear disk 33, and the gear disk 33 is connected to the external drive motor by gear transmission.

[0024] Several inclined grooves 22 are provided on the outer side of the guide pipe 2, and several spiral grooves 21 are also provided. The spiral grooves 21 and the inclined grooves 22 are interconnected and evenly distributed around the guide pipe 2.

[0025] The ball bearing 31 is tumblingly connected within the inclined groove 22, and the inclination of the inclined groove 22 is greater than that of the spiral groove 21. An external drive motor drives the gear disk 33 to rotate via gear transmission, which in turn drives the sleeve 3 to rotate, causing the ball 31 to roll in the spiral groove 21 and the inclined groove 22. When the ball 31 rolls through the spiral groove 21, it causes the guide tube 2 to move. After entering the inclined groove 22, the axial force causes the guide tube 2 to reverse and reset, thus causing the guide tube 2 to move back and forth. The gap between the inner wall of the guide tube 2 and the outer wall of the conical cylinder 32 varies, and the slurry flow rate varies, realizing a periodic pulse flow. This can improve the detection accuracy of the probe in various working conditions. The periodic pulse flow solves the three major measurement interference sources, including window crystal accumulation, sampling dead angle deposition, and bubble blocking the light path, eliminating system errors and data drift, and improving detection accuracy. By setting the spiral groove 21 and the inclined groove 22, the rotation of the external drive motor is kept in a uniform speed in one direction, thereby reducing the energy consumption of the motor and saving costs compared with the hydraulic drive reciprocating method.

[0026] The end of the guide pipe 2 is rotatably connected to the drain pipe 5. The inner wall of the drain pipe 5 and the inner wall of the guide pipe 2 are both integrally formed with three baffles 6, and the six baffles 6 are evenly distributed. The outer wall of the drain pipe 5 is integrally formed with a toothed plate 51, and the toothed plate 51 is connected to the external drive motor 2 by gear transmission. During the short-time pulse flow process, the slurry flows through the guide pipe 2. When the flow rate suddenly increases, the slurry flows over the baffle plate 6 and is blocked by the baffle plate 6, thereby relatively slowing down the flow rate to ensure the stability of the flow rate. When the slurry flows to the probe, it can both flush the probe surface to avoid scaling and ensure the stability of the flow rate, ensuring the detection accuracy, quickly cleaning the window attachments, eliminating measurement system errors, avoiding long-term shearing and breakage of crystals, avoiding the generation of artificial secondary fine crystals, and not disrupting the tank's graded settling environment.

[0027] The rotational speed of the gear 33 includes medium speed and low speed. At low speed, the gear plate 51 maintains its initial position, and at medium speed, the gear plate 51 rotates 180 degrees. When the toothed disc 33 rotates at low speed, the gap between the guide tube 2 and the conical cylinder 32 changes slowly, resulting in a relatively high intensity of the pulse flow. At this time, the external drive motor 2 causes the toothed plate 51 to rotate 180 degrees through gear transmission, and the three upper baffles 6 and the three lower baffles 6 are staggered. When the toothed disc 33 rotates at medium speed, the external drive motor 2 drives the toothed plate 51 to reset, so that the six baffles 6 are realigned, enhancing the slurry buffer and making the pulse flushing flow field uniform and stable.

[0028] A through hole is provided on one side of the sliding hole, and a push rod 7 is slidably connected in the through hole. The lower end of the push rod 7 is spherical, the upper end of the push rod 7 is in contact with the bottom surface of the sleeve 3, and the lower end is in contact with the upper surface of the toothed plate 51. A wedge-shaped block 52 is integrally formed on one side of the toothed plate 51. After the toothed plate 51 rotates, the upper surface of the wedge-shaped block 52 comes into contact with the lower end of the push rod 7.

[0029] There are gaps at the rotatable connection between sleeve 3 and sleeve 4, as well as between the outer wall of guide tube 2 and the inner wall of sleeve 3; When the toothed plate 51 rotates 180 degrees, the wedge block 52 contacts the lower end of the push rod 7 and squeezes the push rod 7, causing it to slide through the through hole and push against the sleeve 3 to produce a slight tilt. At this time, the conical cylinder 32 and the guide pipe 2 are no longer concentric. The gap on the right side of the conical cylinder 32 disappears, and the gap on the left side increases, causing the slurry to flow at high speed from the left side. This avoids high-intensity slurry flow velocity on both sides, so that even if the baffle plate 6 buffers the slurry, the buffering effect is not good. This method further slows down the flow rate of the slurry to fully ensure the stability of the slurry flow and greatly improves the detection accuracy of crystals.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous crystallization intelligent detection device based on three-stage vacuum flash cooling, comprising a three-stage vacuum flash continuous crystallization mechanism and an intelligent detection probe, characterized in that: A guide plate (1) is provided between the three-stage vacuum flash continuous crystallization mechanism and the intelligent detection probe. The surface of the guide plate (1) is provided with a sliding hole and a groove is provided in the sliding hole. A guide tube (2) is slidably connected in the sliding hole. A boss is provided on the outside of the guide tube (2) and is slidably connected to the groove of the sliding hole through the boss. A sleeve (3) is sleeved on the outer wall of the guide tube (2). A sleeve (4) is integrally formed on one side of the guide plate (1). The sleeve (3) is rotatably connected in the sleeve (4). A ball (31) is slidably connected to the inner wall of the sleeve (3). A spiral groove (21) is provided on the outside of the guide tube (2). The ball (31) is slidably connected in the spiral groove (21). One end of the sleeve (3) is integrally formed with a conical cylinder (32), and the conical cylinder (32) is inserted into the guide tube (2). The maximum outer diameter of the conical cylinder (32) is equal to the inner diameter of the guide tube (2). The outer side of the sleeve (3) is integrally formed with a geared disc (33), and the geared disc (33) is geared to an external drive motor. The outer side of the guide tube (2) is provided with several inclined grooves (22), and the spiral grooves (21) are also provided with several, and the spiral grooves are spirally formed. The groove (21) and the inclined groove (22) are interconnected and are evenly distributed around the guide pipe (2). The ball (31) is rolled and connected in the inclined groove (22). The inclination of the inclined groove (22) is greater than that of the spiral groove (21). The end of the guide pipe (2) is rotatably connected to the drain pipe (5). The inner wall of the drain pipe (5) and the inner wall of the guide pipe (2) are integrally formed with three baffles (6), and the six baffles (6) are evenly distributed. The outer wall of the drain pipe (5) is integrally formed with a toothed plate (51), and the toothed plate (51) is geared to the external drive motor 2. The rotation speed of the toothed plate (33) includes medium speed and low speed. At low speed, the toothed plate (51) maintains the initial position, and at medium speed, the toothed plate (51) rotates 180 degrees.

2. The continuous crystallization intelligent detection device based on three-stage vacuum flash cooling according to claim 1, characterized in that: A through hole is provided on one side of the sliding hole, and a push rod (7) is slidably connected in the through hole. The lower end of the push rod (7) is spherical. The upper end of the push rod (7) is in contact with the bottom surface of the sleeve (3), and the lower end is in contact with the upper surface of the toothed plate (51). A wedge-shaped block (52) is integrally formed on one side of the toothed plate (51). After the toothed plate (51) rotates, the upper surface of the wedge-shaped block (52) comes into contact with the lower end of the push rod (7).

3. The continuous crystallization intelligent detection device based on three-stage vacuum flash cooling according to claim 2, characterized in that: There are gaps at the rotatable connection between the sleeve (3) and the tube (4), as well as between the outer wall of the guide tube (2) and the inner wall of the sleeve (3).

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