A pipeline type gas float liquid level regulating device
Patent Information
- Application Number
- CN202522665592.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-16
AI Technical Summary
Traditional air flotation level regulation methods cannot achieve precise control, are prone to clogging, are inconvenient to clean, and have high maintenance costs.
A pipeline-type air flotation level adjustment device is adopted. Through the conveying bin, corrugated pipe and telescopic adjustment mechanism, the screw thread drive drives the corrugated pipe to stretch or compress, so as to achieve precise linear adjustment of the air flotation tank level.
It enables precise adjustment of the liquid level in the flotation tank, reduces fluctuations, ensures stable effluent quality, and lowers consumable costs and maintenance difficulty.
Smart Images
Figure CN224930329U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air flotation tank level regulation technology, specifically to a pipeline air flotation level regulation device. Background Technology
[0002] Pressurized dissolved air flotation is a highly efficient solid-liquid separation technology widely used in water treatment. Its core principle is to dissolve air in water under pressure to form supersaturated dissolved air water, which is then depressurized and released in the flotation tank to generate a large number of microbubbles. This causes suspended solids, oils, and colloidal particles in the water to adhere to the bubbles and float to the surface, thereby effectively removing pollutants.
[0003] During the operation of the dissolved air flotation (DAF) process, stable liquid level control is crucial for ensuring treatment effectiveness and effluent quality. Traditional DAF liquid level adjustment methods typically use a lifting screw to move a water-blocking seal plate up and down, thereby changing the gap height between the fixed outlet cylinder and the water-blocking seal plate, adjusting the outlet flow rate, and thus controlling the liquid level. However, the outlet flow is forced out through the outlet gap, making precise control difficult, resulting in large liquid level fluctuations and affecting the stability of effluent quality. Furthermore, the outlet gap is small, allowing suspended solids in the water to accumulate and cause blockages. This makes cleaning inconvenient during long-term operation, disassembly and installation cumbersome, reduces production efficiency, and increases maintenance and replacement costs. Utility Model Content
[0004] Therefore, a pipeline-type air flotation level regulating device is needed to solve the problems of existing air flotation tank level regulating methods, such as inaccurate level control, easy clogging, inconvenient cleaning, and high maintenance costs.
[0005] To achieve the above objectives, the inventors provide a pipeline-type air flotation liquid level regulating device, comprising:
[0006] The material conveying bin has a rigid feed pipe connected to its bottom surface, and the top end of the feed pipe extends into the interior of the material conveying bin; the side wall of the material conveying bin is provided with a discharge port, which is connected to a discharge pipe.
[0007] The liquid level regulating assembly includes a bellows and a telescopic regulating mechanism. The bellows is vertically installed inside the conveying hopper, and a conveying gap is left between the bellows and the inner wall of the conveying hopper. The bottom end of the bellows is connected to the top end of the feed pipe. The telescopic regulating mechanism includes a screw, the bottom end of which is threaded through the top surface of the conveying hopper to the inside of the conveying hopper and connected to the bellows. When the bellows is retracted to its shortest length, the height of the top end of the bellows is not lower than the height of the discharge port.
[0008] In some embodiments, the telescopic adjustment mechanism further includes a rigid connecting pipe disposed inside the conveying hopper, with the bottom end of the connecting pipe sleeved on the top end of the corrugated pipe; the bottom end of the screw is connected to the top end of the connecting pipe.
[0009] In some embodiments, the connecting pipe is locked to the top of the bellows by a first hose clamp.
[0010] In some embodiments, the feed pipe is locked to the bottom end of the bellows by a second hose clamp.
[0011] In some embodiments, the top surface of the conveying hopper is hollowed out to form an observation port, and the top surface of the conveying hopper is provided with a mounting frame; the mounting frame is detachably mounted on the top surface of the conveying hopper, and the screw threadedly passes through the mounting frame and through the observation port.
[0012] In some embodiments, the mounting frame includes a fixed plate and a movable frame. The fixed plate is connected to the side wall of the material conveying hopper, and the movable frame is connected to the fixed plate by bolts. The screw thread drives through the movable frame.
[0013] In some embodiments, the bottom surface of the conveying hopper is hollowed out to form an installation port, and the installation port is provided with a cover. The cover includes a connecting plate and a movable plate. The connecting plate is connected to the conveying hopper, and the movable plate is detachably connected to the connecting plate to seal the installation port. The top end of the feed pipe passes through the movable plate to the interior of the conveying hopper.
[0014] In some embodiments, the telescopic adjustment mechanism further includes a handwheel, which is located outside the material conveying bin and coaxially connected to the screw.
[0015] In some embodiments, the telescopic adjustment mechanism further includes a drive motor, which is connected to the screw drive to drive the screw to rotate.
[0016] In some embodiments, the telescopic adjustment mechanism further includes a liquid level detection mechanism and a control unit. The liquid level detection mechanism is located at the flotation tank to detect the liquid level in the flotation tank. The control unit is connected to the liquid level detection mechanism and the drive motor.
[0017] In some embodiments, both the feed pipe and the discharge pipe are provided with flanges.
[0018] Unlike existing technologies, the pipeline-type air flotation level regulating device described in the above technical solution has an inlet pipe in the conveying hopper connected to the air flotation tank. One end of the inlet pipe, located inside the conveying hopper, is connected to a corrugated pipe. The corrugated pipe can be stretched under external force or shortened under external force. When the air flotation tank needs to be adjusted, the screw is rotated. Under the screw's thread transmission, the screw rises or falls, thereby lengthening or compressing the corrugated pipe to linearly adjust its length. After adjusting the corrugated pipe length, when the water level in the air flotation tank exceeds the height of the top of the corrugated pipe, the water passes through the inlet pipe and the corrugated pipe in sequence and enters the conveying gap between the conveying hopper and the corrugated pipe. Finally, it is discharged through the outlet pipe until the water level in the air flotation tank is consistent with the height of the top of the corrugated pipe, at which point the drainage stops. At this time, the water level in the air flotation tank reaches the expected level. Therefore, the pipeline-type air flotation level regulating device can achieve precise linear regulation of the air flotation tank level, solving the problem of non-linear flow control in traditional level regulation, ensuring smooth level fluctuations, and guaranteeing effluent quality. The pipeline-type effluent method is not prone to clogging and is easy to clean. The corrugated pipe can be flushed or replaced when necessary. The corrugated pipe material used is simple and low-cost, reducing consumable costs during use and improving economic efficiency. Corrugated pipes of different telescopic lengths can be replaced as needed to achieve a wider range of level regulation.
[0019] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description
[0020] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.
[0021] In the accompanying drawings of the instruction manual:
[0022] Figure 1 This is a structural diagram of the pipeline-type air flotation level regulating device described in a specific embodiment;
[0023] Figure 2 This is a perspective view of the pipeline-type air flotation level regulating device described in the specific embodiment;
[0024] Figure 3 This is an exploded view of the pipeline-type air flotation level regulating device described in the specific embodiment;
[0025] Figure 4 This is a diagram showing the shortened state of the bellows in the pipeline-type air flotation level regulating device described in a specific embodiment.
[0026] Figure 5 This is a diagram showing the extended state of the bellows in the pipeline-type air flotation level regulating device described in a specific embodiment.
[0027] The reference numerals used in the above figures are explained as follows:
[0028] 1. Feeding hopper; 100. Discharge port;
[0029] 2. Feed pipe;
[0030] 3. Discharge pipe;
[0031] 4. Corrugated pipe;
[0032] 5. Material conveying gap;
[0033] 6. Screw;
[0034] 7. Connecting pipe;
[0035] 8. First hose clamp;
[0036] 9. Second hose clamp;
[0037] 10. Observation port;
[0038] 11. Fixing plate;
[0039] 12. Movable rack;
[0040] 13. Handwheel;
[0041] 14. Flange;
[0042] 15. Installation port;
[0043] 16. Connecting plate;
[0044] 17. Movable board. Detailed Implementation
[0045] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.
[0046] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0047] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0048] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.
[0049] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.
[0050] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.
[0051] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0052] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0053] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0054] Pressurized dissolved air flotation is a highly efficient solid-liquid separation technology widely used in water treatment. Its core principle is to dissolve air in water under pressure to form supersaturated dissolved air water, which is then depressurized and released in the flotation tank to generate a large number of microbubbles. This causes suspended solids, oils, and colloidal particles in the water to adhere to the bubbles and float to the surface, thereby effectively removing pollutants.
[0055] During the operation of the dissolved air flotation (DAF) process, stable liquid level control is crucial for ensuring treatment effectiveness and effluent quality. Traditional DAF liquid level adjustment methods typically involve adjusting a vertically lifting screw to move a water-blocking seal plate up and down, thereby changing the gap height between the fixed outlet cylinder and the water-blocking seal plate, adjusting the effluent flow rate, and thus controlling the liquid level. However, the effluent flow rate is compressed through the outlet gap, making precise control difficult, resulting in large liquid level fluctuations and affecting the stability of the effluent quality. Furthermore, the small outlet gap allows suspended solids in the water to easily accumulate, leading to blockages. Long-term cleaning is inconvenient, disassembly and installation are cumbersome, reducing production efficiency and increasing maintenance and replacement costs.
[0056] Therefore, this utility model provides a pipeline-type air flotation liquid level regulating device for regulating the liquid level of the air flotation tank. In particular, it can be linearly regulated, allowing for more precise and smooth liquid level regulation, ensuring small water level fluctuations while regulating the liquid level, stabilizing the effluent water quality, and having low consumable replacement costs.
[0057] Please see Figure 1 , Figure 2 or Figure 3 In a specific embodiment, the pipeline-type air flotation level regulating device includes a feeding silo 1 and a level regulating component. A rigid feed pipe 2 is connected to the bottom surface of the feeding silo 1, and the top end of the feed pipe 2 extends into the interior of the feeding silo 1. While introducing water, the top end of the feed pipe 2 can be connected to the corrugated pipe 4 described below. A discharge port 100 is provided on the side wall of the feeding silo 1, and a discharge pipe 3 is connected to the discharge port 100. The level regulating component includes a corrugated pipe 4 and a telescopic regulating mechanism. The corrugated pipe 4 is vertically arranged in the feeding silo. Inside the silo 1, a material conveying gap 5 is left between the corrugated pipe 4 and the inner wall of the conveying silo 1. The bottom end of the corrugated pipe 4 is connected to the top end of the feed pipe 2. The telescopic adjustment mechanism includes a screw 6. The bottom end of the screw 6 passes through the top surface of the conveying silo 1 to the inside of the conveying silo 1 and is connected to the corrugated pipe 4. When the corrugated pipe 4 is retracted to its shortest length, the height of the top end of the corrugated pipe 4 is not lower than the height of the discharge port 100, thereby ensuring the adjustment of various liquid levels. Water can be discharged through the discharge port 100.
[0058] The described pipeline-type air flotation level regulating device has an inlet pipe 2 in the conveying silo 1 connected to the air flotation tank. One end of the inlet pipe 2, located inside the conveying silo 1, is connected to a corrugated pipe 4. The corrugated pipe 4 can be stretched under external force or shortened under external force. When it is necessary to adjust the air flotation tank, the screw 6 is rotated. Under the threaded transmission action of the screw 6, please refer to... Figure 4 or Figure 5 The screw 6 rises or falls to stretch or compress the corrugated pipe 4, thus linearly adjusting the length of the corrugated pipe 4. After adjusting the length of the corrugated pipe 4, the water in the flotation tank will pass through the feed pipe 2 and the corrugated pipe 4 in sequence and enter the conveying gap 5 between the conveying bin 1 and the corrugated pipe 4 when the liquid level in the flotation tank exceeds the height of the top of the corrugated pipe 4. Finally, it will be discharged through the discharge pipe 3 until the liquid level in the flotation tank is consistent with the height of the top of the corrugated pipe 4. At this time, the liquid level in the flotation tank reaches the expected liquid level.
[0059] Therefore, the pipeline-type air flotation level regulating device can achieve precise linear regulation of the air flotation tank level, solving the problem of non-linear flow control in traditional level regulation, ensuring smooth level fluctuations, and guaranteeing effluent quality. The pipeline-type effluent method is not prone to clogging and is easy to clean. The corrugated pipe 4 can be flushed or replaced if necessary. The corrugated pipe 4 is made of simple and low-cost materials, reducing consumable costs during use and improving economic efficiency. Corrugated pipes 4 with different telescopic lengths can be replaced as needed to achieve a wider range of level regulation.
[0060] In some embodiments, the feed hopper serves as a container for adjusting the air flotation liquid level. It is cylindrical in shape, with the feed hopper and the bellows 4 arranged coaxially, and a sufficiently large gap is left between the inner wall of the feed hopper and the bellows 4.
[0061] In some embodiments, the feed hopper is made of steel pipe, and both the feed pipe 2 and the discharge pipe 3 are steel pipes. The discharge pipe 3 is welded to the feed hopper after each feed hopper is cut with a saddle-shaped bevel, and the axis of the discharge pipe 3 is perpendicular to the axis of the feed hopper.
[0062] In some embodiments, the telescopic adjustment mechanism further includes a rigid connecting pipe 7, which is disposed inside the feeding hopper 1, and the bottom end of the connecting pipe 7 is sleeved on the top end of the corrugated pipe 4; the bottom end of the screw 6 is connected to the top end of the connecting pipe 7, and the screw 6 and the corrugated pipe 4 are connected through the rigid connecting pipe 7 to pull the top end of the corrugated pipe 4, and in conjunction with the rigid feed pipe 2 to pull the bottom end of the corrugated pipe 4, ensuring that when the screw 6 rises or falls to stretch or compress the corrugated pipe 4, the corrugated pipe 4 is subjected to uniform force at all points in the circumferential direction, ensuring that the height of the corrugated pipe 4 at all points in the circumferential direction is consistent after stretching or compressing, thereby ensuring more accurate liquid level adjustment.
[0063] In some embodiments, the connecting rod is a steel pipe.
[0064] In some embodiments, the bottom end of the screw 6 is connected to the inner wall of the connecting pipe 7 through a plurality of connecting rods. The screw 6 and the connecting rods are arranged coaxially, and the plurality of connecting rods are arranged sequentially around the circumference of the screw 6. The connecting rods are welded to the screw 6 and the connecting pipe 7.
[0065] In some embodiments, the connecting pipe 7 is locked to the top end of the corrugated pipe 4 by the first hose clamp 8, so that the connection and installation or disassembly of the connecting pipe 7 and the corrugated pipe 4 can be quick and easy, and disassembly is convenient when maintenance is required.
[0066] Similarly, in some embodiments, the feed pipe 2 is locked to the bottom end of the bellows 4 by the second hose clamp 9, so that the feed pipe 2 and the bellows 4 can be quickly connected, installed or disassembled, and can be easily disassembled when maintenance is required.
[0067] In some embodiments, the screw 6 is installed on the top surface of the material conveying bin 1 in a detachable manner.
[0068] Please see Figure 2 or Figure 3 In some embodiments, the top surface of the conveying bin 1 is hollowed out to form an observation port 10, through which the user can observe the internal condition of the conveying bin 1. In addition, the corrugated pipe 4 and other structures inside the conveying bin 1 can be taken out through the observation port 10. That is, the size of the observation port 10 is large enough, such as the observation port 10 covering the entire top surface of the conveying bin 1.
[0069] In a further embodiment, a mounting bracket is provided on the top surface of the feeding hopper 1. The mounting bracket is detachably mounted on the top surface of the feeding hopper 1 and is located at the observation port 10. The screw 6 passes through the mounting bracket and the observation port 10 via a threaded drive. When it is necessary to replace or maintain the bellows 4, the mounting bracket is removed and the bellows 4 is detached from the feed pipe 2, after which it can be taken out together with the screw 6.
[0070] In some embodiments, the mounting frame includes a fixed plate 11 and a movable frame 12. The fixed plate 11 is connected to the side wall of the conveying hopper 1. If welding is used, the movable frame 12 is connected to the fixed plate 11 by bolts. The screw 6 passes through the movable frame 12 by threaded drive. The movable frame 12 has a threaded hole, and the screw 6 is screwed into the threaded hole. When maintenance is required, the threads can be unscrewed to detach the movable frame 12 from the fixed plate 11.
[0071] In some embodiments, the bottom surface of the feeding hopper 1 is hollowed out to form an installation port 15, and the installation port 15 is provided with a cover. The cover seals the installation port 15, and the top end of the feed pipe 2 passes through the cover and enters the interior of the feeding hopper 1.
[0072] In some embodiments, the cover includes a connecting plate 16 and a movable plate 17. The connecting plate 16 is connected to the feeding bin 1, and the movable plate 17 is detachably connected to the connecting plate 16 to seal the mounting port 15. The movable plate 17 has a hole through which the top end of the feeding pipe 2 passes, and the top end of the feeding pipe 2 passes through the hole of the movable plate 17 to the interior of the feeding bin 1.
[0073] When maintenance is required, the movable plate 17 can be removed from the connecting plate 16 to open the mounting port 15.
[0074] Please see Figure 2 or Figure 3 In some embodiments, the connecting plate 16 is a flange and is welded to the feed hopper 1. The movable plate 17 is a flange blind plate with a hole for the top end of the feed pipe 2 to pass through. The flange blind plate is connected to the flange by bolts. The feed pipe 2 can be welded to the flange blind plate, or a sealing ring can be set to seal the feed pipe 2 and the hole of the flange blind plate.
[0075] In some embodiments, both the feed pipe 2 and the discharge pipe 3 are provided with flanges 14.
[0076] The feed pipe 2 is connected to the outlet of the flotation tank. Specifically, the bottom end of the feed pipe 2 is provided with a flange 14, and the outlet of the flotation tank is provided with a flange 14. The feed pipe 2 and the outlet of the flotation tank are fixed by bolts to the flange 14.
[0077] The discharge pipe 3 is connected to the clean water collection pipe. Specifically, the discharge pipe 3 is provided with a flange 14, and the clean water collection pipe is also provided with a flange 14. The discharge pipe 3 and the clean water collection pipe are fixed by bolts to the flange 14.
[0078] The screw 6 can be rotated manually. In some embodiments, the telescopic adjustment mechanism also includes a handwheel 13, which is located outside the material conveying bin 1 and coaxially connected to the screw 6. Rotating the handwheel 13 drives the screw 6 to rotate.
[0079] The screw 6 can also be electrically driven to rotate. In some embodiments, the telescopic adjustment mechanism further includes a drive motor, which is connected to the screw 6 in a transmission manner to drive the screw 6 to rotate.
[0080] In some embodiments, the telescopic adjustment mechanism further includes a liquid level detection mechanism and a control unit. The liquid level detection mechanism is located at the flotation tank to detect the liquid level of the flotation tank. The control unit is connected to the liquid level detection mechanism and the drive motor, so that the liquid level of the flotation tank can be monitored at all times, and the drive motor can be started in time to drive the screw 6 to adjust the length of the corrugated pipe 4, thereby adjusting the liquid level of the flotation tank.
[0081] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.
Claims
1. A pipeline-type air flotation liquid level regulating device, characterized in that, include: A material conveying hopper, the bottom surface of which is connected to a rigid feed pipe, and the top end of the feed pipe extends into the interior of the material conveying hopper; The side wall of the material conveying hopper is provided with a discharge port, and the discharge port is connected to a discharge pipe; The liquid level regulating assembly includes a bellows and a telescopic regulating mechanism. The bellows is vertically installed inside the conveying hopper, and a conveying gap is left between the bellows and the inner wall of the conveying hopper. The bottom end of the bellows is connected to the top end of the feed pipe. The telescopic regulating mechanism includes a screw, the bottom end of which is threaded through the top surface of the conveying hopper to the inside of the conveying hopper and connected to the bellows. When the bellows is retracted to its shortest length, the height of the top end of the bellows is not lower than the height of the discharge port.
2. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The telescopic adjustment mechanism also includes a rigid connecting pipe, which is located inside the material conveying hopper, and the bottom end of the connecting pipe is sleeved on the top end of the corrugated pipe; the bottom end of the screw is connected to the top end of the connecting pipe.
3. The pipeline-type air flotation level regulating device according to claim 2, characterized in that, The connecting pipe is locked to the top of the corrugated pipe by a first hose clamp.
4. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The feed pipe is locked to the bottom end of the bellows by a second hose clamp.
5. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The top surface of the material conveying hopper is hollowed out to form an observation port, and the top surface of the material conveying hopper is provided with a mounting frame; the mounting frame is detachably mounted on the top surface of the material conveying hopper, and the screw threadedly passes through the mounting frame and through the observation port.
6. The pipeline-type air flotation level regulating device according to claim 5, characterized in that, The mounting frame includes a fixed plate and a movable frame. The fixed plate is connected to the side wall of the material conveying hopper, and the movable frame is connected to the fixed plate by bolts. The screw thread drives through the movable frame.
7. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The bottom surface of the feeding hopper has a cutout to form an installation opening, and the installation opening is equipped with a cover. The cover includes a connecting plate and a movable plate. The connecting plate is connected to the feeding hopper, and the movable plate is detachably connected to the connecting plate to seal the installation opening. The top end of the feed pipe passes through the movable plate to the interior of the feeding hopper.
8. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The telescopic adjustment mechanism also includes a handwheel, which is located outside the material conveying bin and is coaxially connected to the screw.
9. The pipeline-type air flotation level regulating device according to claim 1, characterized in that, The telescopic adjustment mechanism also includes a drive motor, which is connected to the screw drive to drive the screw to rotate.
10. The pipeline-type air flotation level regulating device according to claim 9, characterized in that, The telescopic adjustment mechanism also includes a liquid level detection mechanism and a control unit. The liquid level detection mechanism is located at the flotation tank to detect the liquid level in the flotation tank. The control unit is connected to the liquid level detection mechanism and the drive motor.