A device for measuring the level of a foam-containing liquid in a distillation kettle for pigment production

Abstract

The utility model discloses a kind of measuring devices of foam level in distillation kettle of pigment production, it is related to measurement;Testing field of technology.The measuring device of foam level in distillation kettle of pigment production, including distillation kettle body, the upper side of the distillation kettle body is fixedly connected with kettle cover, installation port is arranged in the upper side of kettle cover, electronic measuring unit is installed in the upper side of kettle cover, fixed sleeve is connected on the outer surface of electronic measuring unit with fixed ring, the lower side of electronic measuring unit is fixedly installed with upper waveguide rod, the lower end of upper waveguide rod is installed with middle waveguide rod, the lower end of middle waveguide rod is installed with lower waveguide rod, and quick locking mechanism is installed between upper waveguide rod and middle waveguide rod and between middle waveguide rod and lower waveguide rod, only need to rotate connecting screw rod to realize the quick locking and unlocking of waveguide rod, avoid the problem that traditional integral waveguide rod needs to be integrally disassembled when replacing, operation is complicated, time-consuming and maintenance cost is high.

Description

Technical Field

[0001] This utility model relates to the field of measurement and testing technology, specifically a measuring device for the level of foamy liquid in a distillation kettle used for pigment production. Background Technology

[0002] Distillation kettles are core equipment in pigment production, enabling key steps such as the separation and purification of pigment intermediates and the refining of pigments. The accurate measurement of the liquid level inside the kettle directly affects the purity, color uniformity, and production efficiency of pigment products. It is crucial for ensuring the stability of pigment production processes and the achievement of product quality standards. During the distillation process in pigment production, the organic solvents and intermediate mixtures commonly used in pigment synthesis and refining processes are prone to generating dense and persistent foam when heated. These foams float on the liquid surface and interfere with the liquid level measurement signal. Therefore, a dedicated foam-containing liquid level measurement device for pigment production is required.

[0003] Waveguides typically employ an integral structure design, with their length pre-set based on the standard foam thickness inside the distillation vessel used in pigment production. However, in pigment production, changes in foam thickness, such as from 5cm to 10cm, often occur due to product variety switching or process parameter adjustments. Additionally, damage to the waveguide due to corrosive components in the pigment production medium or collisions during material transport cannot be addressed by replacing individual sections or damaged parts; the entire waveguide must be disassembled and replaced. This not only increases spare parts procurement costs but also prolongs downtime for pigment production equipment, disrupting production continuity. Furthermore, traditional waveguides and connecting components often use threaded connections. The high-temperature environment of the distillation vessel in pigment production causes thermal expansion and contraction of metal components, easily leading to thread seizing. Disassembly requires specialized tools, making the process cumbersome and prone to damaging the connection structure, further increasing maintenance difficulty and cost. This fails to meet the demands of pigment production for convenient and economical equipment maintenance. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a measuring device for the level of foamy liquid in a distillation kettle for pigment production. The waveguide is set as a segmented type, and each segment of the waveguide is connected by a quick locking mechanism, which can realize the quick locking and unlocking of the waveguide. This avoids the problems of traditional integral waveguides, which require complete disassembly, are cumbersome to operate, are time-consuming, and have high maintenance costs when replacing them.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for the level of foamy liquid in a distillation kettle for pigment production, comprising a distillation kettle body, a support leg fixedly connected to the lower side of the distillation kettle body, and a kettle cover fixedly connected to the upper side of the distillation kettle body; An installation port is provided on the upper side of the vessel lid, and the lower side of the installation port extends out of the vessel lid. An electronic measuring unit is installed on the upper side of the vessel lid, and a fixing ring is fixedly sleeved on the outer surface of the electronic measuring unit. An upper waveguide rod is fixedly installed on the lower side of the electronic measurement unit, and the lower end of the upper waveguide rod extends into the interior of the distillation vessel body through the mounting port; A middle waveguide is installed at the lower end of the upper waveguide, and a lower waveguide is installed at the lower end of the middle waveguide. A quick-locking mechanism is installed between the upper waveguide and the middle waveguide, as well as between the middle waveguide and the lower waveguide. The upper waveguide, the middle waveguide, and the lower waveguide are connected together by two quick-locking mechanisms. The two quick-locking mechanisms have the same connection structure and are arranged vertically. The following description will focus on the upper quick-locking mechanism. The quick-locking mechanism includes a mounting slot, a mounting rod, four moving slots, four connecting slots, four insertion slots, four moving blocks, four insertion rods, four springs, a ring groove, a threaded ring, a connecting screw, and an anti-loosening ring.

[0006] Preferably, a feed pipe is fixedly connected to the upper side of the vessel lid, the lower side of the feed pipe passes through the vessel lid, the feed pipe is connected to the interior of the distillation vessel body, and a baffle is installed on the upper side of the feed pipe; The feed pipe and the baffle are rotatably connected by a rotating shaft. A discharge pipe is fixedly connected to the front side of the outer surface of the distillation vessel body, and a switch valve is installed on the discharge pipe.

[0007] Preferably, a motor assembly is fixedly connected to the lower side of the distillation vessel body, and a drive shaft is fixedly connected to the output end of the motor assembly; The upper end of the drive shaft rotates and extends into the interior of the distillation vessel body. Stirring blades are fixedly connected to the outer surface of the drive shaft and are located inside the distillation vessel body.

[0008] Preferably, the upper side of the fixing ring is provided with four countersunk holes, which are arranged in a circular array. Countersunk bolts are installed inside the four countersunk holes, and the retaining ring is connected to the vessel cover by the four countersunk bolts.

[0009] Preferably, the mounting groove is formed at the lower end of the upper waveguide rod, the mounting rod is fixedly connected to the upper end of the middle waveguide rod, and the mounting rod slides into the interior of the mounting groove; All four movable slots are formed on the outer surface of the upper waveguide rod, and the four movable slots are arranged in a ring array. The four connecting slots are formed on the inner wall of the four movable slots respectively. The opposite sides of the four connecting slots extend into the interior of the mounting slot, and the four insertion slots are all opened on the outer surface of the mounting rod.

[0010] Preferably, the four insertion slots are arranged in a circular array, with each of the four insertion slots corresponding to one of the four connection slots, and the four moving blocks are slidably connected inside the four moving slots. The four movable blocks are all set with their sides facing upwards, and the four plug-in rods are fixedly connected to the opposite surfaces of the four movable blocks respectively. Four plug rods slide through four connecting slots and extend into the interior of the four plug slots, and four springs are fixedly connected to the opposite surfaces of the four moving blocks.

[0011] Preferably, the opposite ends of the four springs are fixedly connected to the inner walls of the four movable slots, and the annular groove is formed on the outer surface of the upper waveguide rod, and the annular groove is located on the upper side of the movable slot. The threaded ring is fixedly connected inside the ring groove, and the connecting screw is sleeved on the outer surface of the upper waveguide rod. The connecting screw is threadedly connected to the threaded ring. Anti-slip protrusions are fixedly connected to the outer surface of the connecting screw, and anti-detachment rings are fixedly connected to the lower side of the connecting screw. The anti-detachment rings can limit the four moving blocks to the inside of the four moving slots.

[0012] Preferably, a plurality of defoaming teeth are evenly added to the upper and lower sides of the stirring blade, and the defoaming teeth are integrally formed with the stirring blade.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) The measuring device for the foam level in the distillation kettle of the pigment production, through the segmented design of the upper waveguide, middle waveguide, lower waveguide and quick locking mechanism, can quickly lock and unlock the waveguide by simply rotating the connecting screw, which greatly improves the replacement efficiency of the middle waveguide and avoids the problems of traditional integral waveguide replacement, which requires overall disassembly, complicated operation, long time and high maintenance cost.

[0014] (2) The measuring device for foam liquid level in the distillation kettle produced by this pigment, through the synergistic effect of the anti-detachment ring, the plug rod and the spring, enables the waveguide rod to have a reliable snap-fit ​​limiting effect after connection, which improves the firmness of the waveguide rod connection and the stability of signal transmission, and avoids the problem that traditional threaded connection is prone to seizing and loosening due to thermal expansion and contraction under high temperature conditions, which leads to liquid level measurement deviation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of a device for measuring the level of foamy liquid in a distillation kettle used for pigment production, according to the present invention. Figure 2 This is a cross-sectional connection diagram of the distillation vessel body of this utility model; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram of the connection structure of the quick-locking mechanism of this utility model; Figure 5 for Figure 4 Enlarged view of point B; Figure 6 This is a schematic diagram of the connection structure at the stirring blade of this utility model.

[0016] Reference numerals: 1. Distillation vessel body; 2. Support leg; 3. Vessel lid; 4. Feed pipe; 5. Baffle; 6. Discharge pipe; 7. Motor assembly; 8. Drive shaft; 9. Stirring blade; 10. Mounting port; 11. Electronic measuring unit; 12. Fixing ring; 13. Countersunk hole; 14. Countersunk bolt; 15. Upper waveguide rod; 16. Middle waveguide rod; 17. Lower waveguide rod; 18. Mounting groove; 19. Mounting rod; 20. Moving groove; 21. Connecting groove; 22. Insertion groove; 23. Moving block; 24. Insertion rod; 25. Spring; 26. Ring groove; 27. Threaded ring; 28. Connecting screw; 29. ​​Anti-detachment ring. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Please see Figure 1-6 This utility model provides a new technical solution: a measuring device for the level of foamy liquid in a distillation kettle for pigment production, including a distillation kettle body 1: the distillation kettle body 1 is the mounting base and reaction vessel of the entire measuring device, the lower side of the distillation kettle body 1 is fixedly connected to the support leg 2 and the motor assembly 7, the upper side of the distillation kettle body 1 is fixedly connected to the kettle cover 3, the outer side of the distillation kettle body 1 is fixedly connected to the discharge pipe 6, the interior of the distillation kettle body 1 is used to contain the medium to be distilled, and the distillation kettle body 1 provides mounting support for each component and ensures the distillation reaction.

[0022] Support leg 2: Support leg 2 is a supporting component of the distillation vessel body 1. Support leg 2 is fixedly connected to the lower side of the distillation vessel body 1. Support leg 2 supports the entire distillation vessel body 1 above the ground. Support leg 2 keeps the distillation vessel body 1 at a certain distance from the ground. The function of support leg 2 is to facilitate the installation of motor assembly 7 and subsequent operation and maintenance.

[0023] The lid 3 is a sealing and mounting component of the distillation vessel body 1. The lid 3 is fixedly connected to the upper side of the distillation vessel body 1. The feed pipe 4 is fixedly connected to the upper side of the lid 3. The upper side of the lid 3 has an installation opening 10. The upper side of the lid 3 is connected to the fixing ring 12 by countersunk bolts 14. The function of the lid 3 is to seal the upper opening of the distillation vessel body 1 and provide an installation position for related components.

[0024] Feed pipe 4: Feed pipe 4 is the raw material conveying component of the distillation vessel body 1. Feed pipe 4 is fixedly connected to the upper side of the vessel cover 3. The lower side of feed pipe 4 passes through the vessel cover 3 and is connected to the interior of the distillation vessel body 1. The upper side of feed pipe 4 is rotatably connected to the baffle 5 through a rotating shaft. The function of feed pipe 4 is to convey the raw material medium to be processed into the interior of the distillation vessel body 1.

[0025] Cover 5: Cover 5 is the opening and closing component of feed pipe 4. Cover 5 is rotatably connected to the upper side of feed pipe 4 via a rotating shaft. Cover 5 can rotate around the rotating shaft to open or close the opening at the upper end of feed pipe 4. The function of cover 5 is to prevent foreign matter from entering the interior of distillation vessel body 1 and to reduce excessive steam overflow from the vessel.

[0026] Discharge pipe 6: Discharge pipe 6 is the product discharge component of the distillation vessel body 1. The discharge pipe 6 is fixedly connected to the front side of the outer surface of the distillation vessel body 1. A switch valve is installed on the discharge pipe 6. The discharge pipe 6 is connected to the inside of the distillation vessel body 1. The function of the discharge pipe 6 is to discharge the product or residual liquid in the distillation vessel body 1 after distillation.

[0027] Motor assembly 7: Motor assembly 7 is the power source component of the stirring mechanism. Motor assembly 7 is fixedly connected to the lower side of the distillation vessel body 1. The output end of motor assembly 7 is fixedly connected to the drive shaft 8. When motor assembly 7 is working, it generates rotational power. The function of motor assembly 7 is to drive the drive shaft 8 to rotate and provide power for stirring.

[0028] Drive shaft 8: Drive shaft 8 is a power transmission component. The lower end of drive shaft 8 is fixedly connected to the output end of motor assembly 7, and the upper end of drive shaft 8 extends rotatably into the interior of distillation vessel body 1. Stirring blades 9 are fixedly connected to the outer surface of drive shaft 8. The function of drive shaft 8 is to transmit the rotational power of motor assembly 7 to stirring blades 9.

[0029] Stirring blade 9: Stirring blade 9 is a medium stirring component. Stirring blade 9 is fixedly connected to the outer surface of drive shaft 8. Stirring blade 9 is set inside the distillation vessel body 1. Stirring blade 9 rotates under the drive of drive shaft 8. The function of stirring blade 9 is to stir the medium inside the distillation vessel body 1 so that the medium is heated evenly.

[0030] Mounting port 10: Mounting port 10 is a mounting channel component for the upper waveguide 15. Mounting port 10 is opened on the upper side of the vessel cover 3, and the lower side of mounting port 10 extends out of the vessel cover 3. Mounting port 10 is adapted to the outer diameter of the upper waveguide 15. The function of mounting port 10 is to provide a channel for the upper waveguide 15 to pass through the vessel cover 3, so that the upper waveguide 15 can extend into the interior of the distillation vessel body 1.

[0031] Electronic measuring unit 11: Electronic measuring unit 11 is the core component of liquid level measurement. Electronic measuring unit 11 is installed on the upper side of the vessel cover 3. The outer surface of electronic measuring unit 11 is fixedly fitted with a fixing ring 12. The lower side of electronic measuring unit 11 is fixedly installed with a waveguide rod 15. Electronic measuring unit 11 transmits and receives radar signals through the waveguide rod. Electronic measuring unit 11 processes the reflected signals and calculates the liquid level height. The function of electronic measuring unit 11 is to output liquid level data to achieve accurate measurement.

[0032] Fixing ring 12: The fixing ring 12 is the mounting and fixing component of the electronic measuring unit 11. The fixing ring 12 is fixedly sleeved on the outer surface of the electronic measuring unit 11. Four countersunk holes 13 arranged in a ring are opened on the upper side of the fixing ring 12. The fixing ring 12 is connected to the vessel cover 3 through the countersunk bolts 14 in the countersunk holes 13. The function of the fixing ring 12 is to firmly install the electronic measuring unit 11 on the vessel cover 3.

[0033] Countersunk hole 13: Countersunk hole 13 is the mounting and receiving component for countersunk bolt 14. Countersunk hole 13 is opened on the upper side of retaining ring 12. Four countersunk holes 13 are arranged in a ring array. The diameter of countersunk hole 13 is adapted to countersunk bolt 14. The function of countersunk hole 13 is to accommodate the head of countersunk bolt 14 so that the head of countersunk bolt 14 does not protrude from the upper surface of retaining ring 12.

[0034] Countersunk bolt 14: Countersunk bolt 14 is a fastening component connecting the retaining ring 12 and the vessel cover 3. The countersunk bolt 14 is installed inside the countersunk hole 13. The countersunk bolt 14 passes through the retaining ring 12 and is threadedly connected to the vessel cover 3. The function of the countersunk bolt 14 is to fasten the retaining ring 12 and the electronic measuring unit 11 to the vessel cover 3 to ensure installation stability.

[0035] Upper waveguide 15: The upper waveguide 15 is a radar signal transmission component. The upper waveguide 15 is fixedly installed on the lower side of the electronic measurement unit 11. The lower end of the upper waveguide 15 extends into the interior of the distillation vessel body 1 through the mounting port 10. The lower end of the upper waveguide 15 has a mounting groove 18. The outer surface of the upper waveguide 15 has a moving groove 20 and an annular groove 26. The function of the upper waveguide 15 is to transmit the radar signal of the electronic measurement unit 11 and connect to the middle waveguide 16.

[0036] Middle waveguide rod 16: The middle waveguide rod 16 is the intermediate adapter component of the waveguide rod. The upper end of the middle waveguide rod 16 is installed at the lower end of the upper waveguide rod 15, and the lower end of the middle waveguide rod 16 is installed at the upper end of the lower waveguide rod 17. The upper end of the middle waveguide rod 16 is fixedly connected to the mounting rod 19. The length of the middle waveguide rod 16 can be changed according to the foam thickness. The function of the middle waveguide rod 16 is to transmit radar signals and adapt to different foam thickness conditions.

[0037] Lower waveguide 17: The lower waveguide 17 is the terminal transmission component of the radar signal. The upper end of the lower waveguide 17 is installed at the lower end of the middle waveguide 16. The lower end of the lower waveguide 17 extends into the liquid inside the distillation vessel body 1. The lower end of the lower waveguide 17 is machined into a tapered tip. The function of the lower waveguide 17 is to transmit radar signals. The tapered tip facilitates signal concentration and penetration of the foam layer.

[0038] Mounting slot 18: Mounting slot 18 is an insertion receiving component for mounting rod 19. Mounting slot 18 is opened at the lower end of upper waveguide rod 15. The groove diameter of mounting slot 18 is adapted to the outer diameter of mounting rod 19. Mounting slot 18 is used to receive mounting rod 19 at the upper end of middle waveguide rod 16. The function of mounting slot 18 is to provide insertion space for mounting rod 19 and achieve initial positioning.

[0039] Mounting rod 19: Mounting rod 19 is the connecting component between the middle waveguide rod 16 and the upper waveguide rod 15. Mounting rod 19 is fixedly connected to the upper end of the middle waveguide rod 16. Mounting rod 19 slides into the interior of the mounting groove 18. Four insertion grooves 22 arranged in a ring array are opened on the outer surface of mounting rod 19. The function of mounting rod 19 is to achieve the initial docking of the middle waveguide rod 16 and the upper waveguide rod 15 by cooperating with the mounting groove 18.

[0040] Movable slot 20: The movable slot 20 is a sliding receiving component for the movable block 23. The movable slot 20 is formed on the outer surface of the upper waveguide rod 15. The four movable slots 20 are arranged in a ring array. The slot shape of the movable slot 20 is adapted to the movable block 23. The movable slot 20 is used to receive the movable block 23. The function of the movable slot 20 is to provide sliding space for the movable block 23.

[0041] Connecting groove 21: Connecting groove 21 is a through-channel component for the plug rod 24. Connecting groove 21 is formed on the inner wall of the moving groove 20. One end of connecting groove 21 extends into the interior of the mounting groove 18. The groove diameter of connecting groove 21 is adapted to the plug rod 24. The function of connecting groove 21 is to provide a through-channel for the plug rod 24, so that the plug rod 24 can extend from the moving groove 20 into the mounting groove 18.

[0042] Insertion slot 22: Insertion slot 22 is a snap-fit ​​fixing component for insertion rod 24. Insertion slot 22 is opened on the outer surface of mounting rod 19. Four insertion slots 22 are arranged in a ring array. Insertion slots 22 correspond one-to-one with connecting slots 21. The groove shape of insertion slot 22 is adapted to the end of insertion rod 24. The function of insertion slot 22 is to accommodate the end of insertion rod 24 and achieve snap-fit ​​fixing.

[0043] Moving block 23: Moving block 23 is the driving component of plug rod 24. Moving block 23 is slidably connected inside moving groove 20. The side of moving block 23 that is far apart from each other is an inclined surface and the inclined surface faces upward. The opposite side of moving block 23 is fixedly connected to plug rod 24. One side of moving block 23 is fixedly connected to spring 25. Moving block 23 slides along moving groove 20 under the pressure of anti-detachment ring 29. The function of moving block 23 is to drive plug rod 24 to insert or disengage from plug groove 22.

[0044] Connecting rod 24: Connecting rod 24 is a snap-fit ​​limiting component for the waveguide rod. Connecting rod 24 is fixedly connected to the opposite surface of the moving block 23. Connecting rod 24 slides through the connecting groove 21 and extends into the interior of the connecting groove 22. The end of connecting rod 24 is adapted to the connecting groove 22. The function of connecting rod 24 is to snap-fit ​​and limit the mounting rod 19 and the upper waveguide rod 15 by inserting it into the connecting groove 22, thereby realizing the connection and fixation of the waveguide rod.

[0045] Spring 25: Spring 25 is the reset component of movable block 23. Spring 25 is fixedly connected to the opposite surface of movable block 23. The opposite end of spring 25 is fixedly connected to the inner wall of movable groove 20. Spring 25 is compressed and stores elastic potential energy in the locked state. Spring 25 releases elastic potential energy when unlocked. The function of spring 25 is to push movable block 23 and plug rod 24 back to their original positions.

[0046] Annular groove 26: Annular groove 26 is a mounting and fixing component for threaded ring 27. Annular groove 26 is formed on the outer surface of upper waveguide rod 15. Annular groove 26 is located on the upper side of movable groove 20. The groove shape of annular groove 26 is adapted to threaded ring 27. Annular groove 26 is used to accommodate threaded ring 27. The function of annular groove 26 is to provide a fixed position for threaded ring 27.

[0047] Threaded ring 27: Threaded ring 27 is a mating component of connecting screw 28. Threaded ring 27 is fixedly connected inside the ring groove 26. Threaded ring 27 is threadedly connected to connecting screw 28. The internal thread of threaded ring 27 is adapted to the external thread of connecting screw 28. The function of threaded ring 27 is to provide threaded engagement for connecting screw 28, so that connecting screw 28 can move up and down by rotation.

[0048] Connecting screw 28: Connecting screw 28 is the driving component of anti-detachment ring 29. Connecting screw 28 is sleeved on the outer surface of upper waveguide rod 15. Connecting screw 28 is threadedly connected to threaded ring 27. Anti-slip protrusion is fixedly connected to the outer surface of connecting screw 28. Anti-detachment ring 29 is fixedly connected to the lower side of connecting screw 28. The anti-slip protrusion facilitates the application of force to rotate connecting screw 28. The function of connecting screw 28 is to drive anti-detachment ring 29 to move up and down by rotation, so as to realize locking or unlocking operation.

[0049] Anti-detachment ring 29: Anti-detachment ring 29 is a pressure limiting component for moving block 23. Anti-detachment ring 29 is fixedly connected to the lower side of connecting screw 28. When anti-detachment ring 29 moves down under the drive of connecting screw 28, it contacts the inclined surface of moving block 23 and presses moving block 23. In the locked state, anti-detachment ring 29 limits moving block 23 in moving groove 20. The function of anti-detachment ring 29 is to push moving block 23 to slide so that plug rod 24 is inserted into plug groove 22, preventing plug rod 24 from detaching.

[0050] Furthermore, the device is installed and fixed electronic measuring unit 11 on the upper side of the vessel cover 3 by a fixing ring 12 fixedly sleeved on the outer surface. The fixing ring 12 is fastened to the vessel cover 3 by countersunk bolts 14 in four countersunk holes 13 arranged in a ring. The upper waveguide rod 15 on the lower side of the electronic measuring unit 11 passes through the mounting port 10 on the vessel cover 3 and extends into the interior of the distillation vessel body 1, providing a signal transmission channel for liquid level detection.

[0051] When connecting the upper waveguide 15 and the middle waveguide 16, the mounting rod 19 at the upper end of the middle waveguide 16 is slidably inserted into the mounting groove 18 at the lower end of the upper waveguide 15, so that the four insertion grooves 22 on the outer surface of the mounting rod 19 are aligned with the connecting grooves 21 on the inner wall of the four moving grooves 20 on the upper waveguide 15. Then, the connecting screw 28 is rotated. The anti-slip protrusions on the outer surface of the connecting screw 28 facilitate the application of force, so that it engages with the threaded ring 27 in the annular groove 26 on the outer surface of the upper waveguide 15. As the connecting screw 28 rotates, it moves downward as a whole, and drives the anti-detachment ring 29 fixed on its lower side to move downward synchronously. When the anti-detachment ring 29 moves down to When in contact with the inclined surfaces of the four movable blocks 23, the connecting screw 28 continues to rotate downwards. The anti-detachment ring 29 applies a radially inward pressure through the inclined surfaces, pushing the four movable blocks 23 to slide into their respective corresponding movable slots 20. The sliding of the movable blocks 23 causes the four plug-in rods 24 fixed on their opposite surfaces to pass through the connecting slots 21 and finally accurately insert into the corresponding four plug-in slots 22 on the mounting rod 19. At this time, the four springs 25 are compressed and store elastic potential energy, thereby achieving a firm engagement and limiting of the upper waveguide rod 15 and the middle waveguide rod 16. Then, the middle waveguide rod 16 and the lower waveguide rod 17 are connected together in the same way.

[0052] When the foam-containing liquid level measuring distillation vessel is working, the motor assembly 7 drives the transmission shaft 8 at the output end to rotate, which in turn drives the stirring blades 9 on the outer surface of the transmission shaft 8 to stir the medium inside the distillation vessel body 1. The foam generated by the heating of the medium floats on the liquid surface. The electronic measurement unit 11 transmits high-frequency radar signals to the medium through the upper waveguide 15, the middle waveguide 16, and the lower waveguide 17. After the signal penetrates the foam layer, it is reflected at the liquid interface. The reflected signal is transmitted back to the electronic measurement unit 11 through the waveguide. The electronic measurement unit 11 processes the signal, calculates the true liquid level height, and outputs the data.

[0053] When replacing the waveguide 16 according to the foam thickness, rotate the connecting screw 28 in the reverse direction to separate it from the threaded ring 27. This will cause the anti-detachment ring 29 to move upward, releasing the limit on the moving block 23. Pull the waveguide 16 outward, and the mounting rod 19 will be pulled out of the mounting groove 18. At the same time, the insertion groove 22 will press the insertion rod 24, pushing the moving block 23 to compress the spring 25 and retract it into the moving groove 20. The waveguide 16 can then be removed. After replacing the waveguide 16 with a new one, repeat the above locking steps to put it back into use.

[0054] Example: Adapting to high-foaming media scenarios Please see Figure 6 Several defoaming teeth are evenly added to the upper and lower sides of the stirring blade 9. The defoaming teeth are integrally formed with the stirring blade 9. The other stirring components retain their original structure and do not change the overall connection method and installation position of the stirring components.

[0055] After the addition of defoaming teeth, the motor assembly 7 will drive the transmission shaft 8 to rotate synchronously after starting, thereby driving the stirring blade 9 to rotate inside the distillation vessel body 1. When the stirring blade 9 rotates, the defoaming teeth on its outer edge will act on the foam layer inside the vessel together with the blade. The foam will be broken by the cutting action during the rotation process, creating conditions for the radar signal of the electronic measurement unit 11 to penetrate the foam layer without adding any other power components.

[0056] After adding defoaming teeth, the defoaming teeth can effectively break up highly stable foam, reduce the scattering interference of foam on radar signals, help the electronic measurement unit 11 to more accurately capture the reflected signal of the liquid interface, improve the reliability of liquid level measurement, eliminate the need to add defoamer, avoid contamination of the distillation medium due to the addition of defoamer, ensure the purity of the medium, and at the same time eliminate the auxiliary operation of adding and metering defoamer, simplifying the operation process of distillation.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A measuring device for measuring the level of foamy liquid in a distillation kettle for pigment production, comprising a distillation kettle body (1), a support leg (2) fixedly connected to the lower side of the distillation kettle body (1), and a kettle cover (3) fixedly connected to the upper side of the distillation kettle body (1). An installation port (10) is provided on the upper side of the lid (3), and the lower side of the installation port (10) extends out of the lid (3). An electronic measuring unit (11) is installed on the upper side of the lid (3), and a fixing ring (12) is fixedly sleeved on the outer surface of the electronic measuring unit (11). An upper waveguide rod (15) is fixedly installed on the lower side of the electronic measurement unit (11), and the lower end of the upper waveguide rod (15) extends into the interior of the distillation vessel body (1) through the mounting port (10); A middle waveguide (16) is mounted at the lower end of the upper waveguide (15), and a lower waveguide (17) is mounted at the lower end of the middle waveguide (16). The feature is that: A quick-locking mechanism is installed between the upper waveguide (15) and the middle waveguide (16) and between the middle waveguide (16) and the lower waveguide (17). The upper waveguide (15), the middle waveguide (16), and the lower waveguide (17) are connected together by two quick-locking mechanisms. The quick-locking mechanism includes a mounting slot (18), a mounting rod (19), four moving slots (20), four connecting slots (21), four plug slots (22), four moving blocks (23), four plug rods (24), four springs (25), a ring groove (26), a threaded ring (27), a connecting screw (28), and an anti-loosening ring (29).

2. The measuring device for measuring the level of foamy liquid in a distillation kettle for pigment production according to claim 1, characterized in that: The upper side of the kettle cover (3) is fixedly connected to the feed pipe (4), the lower side of the feed pipe (4) passes through the kettle cover (3), the feed pipe (4) is connected to the interior of the distillation kettle body (1), and a baffle (5) is installed on the upper side of the feed pipe (4). The feed pipe (4) and the baffle (5) are rotatably connected by a rotating shaft. The front side of the outer surface of the distillation vessel body (1) is fixedly connected to the discharge pipe (6), and a switch valve is installed on the discharge pipe (6).

3. The measuring device for the level of foamy liquid in a distillation kettle for pigment production according to claim 1, characterized in that: The lower side of the distillation vessel body (1) is fixedly connected to a motor assembly (7), and the output end of the motor assembly (7) is fixedly connected to a drive shaft (8). The upper end of the drive shaft (8) rotates and extends into the interior of the distillation vessel body (1). A stirring blade (9) is fixedly connected to the outer surface of the drive shaft (8), and the stirring blade (9) is located inside the distillation vessel body (1).

4. The measuring device for measuring the level of foamy liquid in a distillation kettle for pigment production according to claim 1, characterized in that: The upper side of the fixing ring (12) is provided with four countersunk holes (13), which are arranged in a ring array. Countersunk bolts (14) are installed inside the four countersunk holes (13), and the retaining ring (12) is connected to the lid (3) by the four countersunk bolts (14).

5. The measuring device for measuring the level of foamy liquid in a distillation kettle for pigment production according to claim 1, characterized in that: The mounting groove (18) is opened at the lower end of the upper waveguide rod (15), and the mounting rod (19) is fixedly connected to the upper end of the middle waveguide rod (16). The mounting rod (19) slides into the interior of the mounting groove (18). Four movable slots (20) are all opened on the outer surface of the upper waveguide rod (15). The four movable slots (20) are arranged in a ring array. Four connecting slots (21) are respectively opened on the inner wall of the four movable slots (20). The opposite sides of the four connecting slots (21) extend into the interior of the mounting slot (18), and the four plug slots (22) are all opened on the outer surface of the mounting rod (19).

6. The measuring device for the level of foamy liquid in a distillation kettle for pigment production according to claim 5, characterized in that: The four insertion slots (22) are arranged in a ring array, and the four insertion slots (22) are respectively arranged corresponding to the four connecting slots (21). The four moving blocks (23) are respectively slidably connected inside the four moving slots (20). The four movable blocks (23) are all inclined planes on the side away from each other and the inclined planes face upwards. The four plug rods (24) are fixedly connected to the opposite surfaces of the four movable blocks (23); Four plug rods (24) slide through four connecting slots (21) and extend into the interior of four plug slots (22), and four springs (25) are fixedly connected to the opposite surfaces of four moving blocks (23).

7. The measuring device for the level of foamy liquid in a distillation kettle for pigment production according to claim 6, characterized in that: The opposite ends of the four springs (25) are respectively fixedly connected to the inner walls of the four moving slots (20), and the annular groove (26) is opened on the outer surface of the upper waveguide (15). The annular groove (26) is located on the upper side of the moving slot (20). The threaded ring (27) is fixedly connected inside the ring groove (26), and the connecting screw (28) is sleeved on the outer surface of the upper waveguide (15). The connecting screw (28) is threadedly connected to the threaded ring (27). Anti-slip protrusions are fixedly connected to the outer surface of the connecting screw (28), and anti-detachment ring (29) is fixedly connected to the lower side of the connecting screw (28). The anti-detachment ring (29) can limit the four moving blocks (23) inside the four moving slots (20).

8. The measuring device for measuring the level of foamy liquid in a distillation kettle for pigment production according to claim 3, characterized in that: Several defoaming teeth are evenly added to the upper and lower sides of the stirring blade (9), and the defoaming teeth are integrally formed with the stirring blade (9).

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