Adjustable overflow pipe device

Abstract

This utility model belongs to the field of water treatment technology, specifically related to water conservancy engineering and water treatment, and is an adjustable overflow pipe device for adjusting variable liquid level height. The adjustable overflow pipe device includes: a base plate, fixedly installed on a foundation structure, with its lower end connected to a drainage system; an overflow pipe, connected to the upper part of the base plate via a telescopic pipe, with an overflow port at its top; a guide mechanism, providing a vertical sliding guide path with upper and lower limits; an adjustment mechanism, providing an upward pulling driving force; and a drive frame, connected downward to the overflow pipe, which, driven by the adjustment mechanism, moves the overflow pipe up and down along the vertical sliding guide path within the range defined by the upper and lower limits, thereby adjusting the vertical height of the overflow port. In this utility model, the overflow pipe is connected to the base plate via a flexible hose, allowing it to move up and down to change the overflow height and adapt to different operating conditions.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, and relates to water conservancy engineering and water treatment. Specifically, it is an adjustable overflow pipe device for adjusting variable liquid level height. Background Technology

[0002] Most commonly used overflow pipes are fixed structures, and their overflow height is not adjustable, which leads to the following problems in practical applications:

[0003] ① Inability to adapt to changes in liquid level: For example, in the process of sewage treatment, different operating conditions may require different overflow water levels, but traditional overflow pipes cannot be flexibly adjusted.

[0004] ② Inconvenient maintenance: When the fixed overflow pipe is blocked or damaged, the machine needs to be stopped for maintenance, which affects production efficiency.

[0005] ③ Complex installation: Some adjustable overflow pipes use multi-section splicing or mechanical lifting structures, but there are problems such as poor sealing and insufficient stability. Utility Model Content

[0006] I. Technical problems to be solved

[0007] This invention aims to solve at least partially one of the aforementioned technical problems.

[0008] II. Technical Solution

[0009] This utility model provides an adjustable overflow pipe device. The adjustable overflow pipe device of this utility model includes:

[0010] The base plate is fixedly installed on the foundation structure, and its lower end is connected to the drainage system;

[0011] An overflow pipe is connected to the upper part of the base plate pipe via a retractable pipeline, and an overflow port is provided at its top.

[0012] The guiding mechanism provides a vertical sliding guiding path with upper and lower limits;

[0013] Adjustment mechanism, which provides the upward driving force;

[0014] The drive frame is connected to the overflow pipe downwards. Driven by the adjustment mechanism, the overflow pipe moves up and down along the vertical sliding guide path within the range defined by the upper and lower limits, thereby adjusting the vertical height of the overflow port.

[0015] In some embodiments of this utility model, the guiding mechanism includes: N guide rods, the lower end of each guide rod being fixed to the base tube and extending vertically upward; each guide rod is provided with a lower stop block and an upper stop block, N≥3; wherein, the N guide rods are parallel to each other, providing a guide path that can slide up and down; the positions of the lower and upper stop blocks on the N guide rods correspond to each other, providing the lower limit and upper limit of the guide path; a guide rod slider is provided between the lower and upper stop blocks of each guide rod, and the periphery of the drive frame is connected to the N guide rod sliders.

[0016] In some embodiments of this invention, N=4.

[0017] In some embodiments of this utility model, the lower end of each guide rod is welded and fixed to the periphery of the base tube.

[0018] In some embodiments of this utility model, the vertical positions of the lower stop block and the upper stop block on the guide rod are adjustable.

[0019] In some embodiments of this utility model, the adjustment mechanism includes: a gate opener, disposed at the upper part of the overflow pipe; and a drive frame, disposed between the gate opener and the overflow pipe, which is connected upward to the drive shaft of the gate opener and downward to the overflow pipe through M connecting rods, where M≥3.

[0020] In some embodiments of this utility model, the gate hoist is fixed to the base plate tube by a mounting flange.

[0021] In some embodiments of this utility model, M=4; the drive frame is a square steel frame structure with four guide rod sliders connected to its periphery, which slide and cooperate with the corresponding guide rods to maintain synchronous lifting.

[0022] In some embodiments of this utility model, the retractable pipeline is: a retractable flexible hose; the base plate and the retractable corrugated pipe are detachably connected through a lower connecting flange assembly; the overflow pipe and the retractable corrugated pipe are detachably connected through an upper connecting flange assembly.

[0023] In some embodiments of this utility model, the retractable hose is a retractable corrugated pipe made of rubber or PVC.

[0024] In some embodiments of this utility model, the retractable hose satisfies: L1≥1.2L, where L is the preset overflow pipe lifting stroke; L1 is the effective extension length of the retractable corrugated pipe.

[0025] In some embodiments of this utility model, the base plate is fixed to the pool body, support, or existing pipeline.

[0026] In some embodiments of this utility model, the adjustment mechanism includes one of the following: a handwheel, a motor, a hydraulic cylinder, or a gate opener.

[0027] III. Beneficial Effects

[0028] As can be seen from the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art:

[0029] ① Combination of base plate pipe and overflow pipe

[0030] The base pipe is installed on the foundation structure (such as a water tank or reservoir) or on existing pipelines. The overflow pipe is connected to the base pipe via a flexible hose and can be moved up and down to change the overflow height to adapt to different working conditions. The overflow pipe is detachable for easy cleaning or replacement. Furthermore, compared to traditional adjustable overflow pipes, this invention is lower in cost and easier to install.

[0031] Utilizing corrosion-resistant, highly flexible, extendable hoses (such as rubber or PVC hoses) ensures sealing and durability. Hose connections guarantee leak-free operation, preventing contamination or efficiency loss.

[0032] ② Adjustment mechanism, guidance mechanism, drive frame

[0033] The overflow pipe can be adjusted in height manually, electrically, or hydraulically, for example, by using a slide rail, rack and pinion, or screw lifting mechanism.

[0034] ③ Automated Precision Control

[0035] Achieving automated operation: Through closed-loop control formed by liquid level sensor feedback, the device can automatically maintain a constant liquid level even without human intervention, significantly improving the level of operational intelligence. Sensors monitor liquid level changes in real time, and the control system can precisely drive the hoist to raise and lower, minimizing the error between the overflow height and the target liquid level, avoiding the lag of manual adjustments. Operators no longer need to frequently manually adjust the overflow port position; they can set the target liquid level through the control panel or remote system, reducing labor costs. Attached Figure Description

[0036] Figure 1 and Figure 2 These are schematic diagrams of the adjustable overflow pipe device of the first embodiment of this utility model in the extended state and the compressed state, respectively.

[0037] Figure 3 and Figure 4 for Figure 1 The diagram shows the adjustable overflow pipe device in its extended and compressed states in a real-world scenario.

[0038] Figure 5 This is a schematic diagram of the adjustable overflow pipe device according to the second embodiment of this utility model. Detailed Implementation

[0039] The present invention aims to provide an adjustable overflow pipe device with simple structure, convenient adjustment, good sealing performance, and flexible operation, so as to solve the problems of non-adjustable overflow port height, complicated adjustment, high failure rate and easy jamming in the prior art.

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and with reference to the accompanying drawings.

[0041] In a first exemplary embodiment of the present invention, an adjustable overflow pipe device is provided. Figure 1 and Figure 2 These are schematic diagrams of the adjustable overflow pipe device according to the first embodiment of this utility model in the extended and compressed states. As shown in the figures, the adjustable overflow pipe device of this embodiment includes:

[0042] The base plate 7 is fixedly installed on the foundation structure, and its lower end is connected to the drainage system;

[0043] Overflow pipe 4 is connected to the upper part of the base plate pipe through a retractable pipe 6, and an overflow port is provided at its top;

[0044] The guiding mechanism provides a vertical sliding guiding path with upper and lower limits;

[0045] Adjustment mechanism, used to provide the driving force for pulling upward;

[0046] The drive frame 3 is connected downward to the overflow pipe. Driven by the adjustment mechanism, the overflow pipe moves up and down along the vertical sliding guide path within the range defined by the upper and lower limits, thereby adjusting the vertical height of the overflow port.

[0047] In this embodiment, by integrating the chassis tube, retractable pipeline, guide mechanism, adjustment mechanism, and drive frame into a cohesive design, a comprehensive system with three functions—sealing compensation, guiding and limiting, and driving lifting—is formed. In this system, the flexible sealing connection between the chassis tube and the retractable pipeline not only ensures a continuous and leak-free fluid channel during the lifting and lowering of the overflow pipe but also absorbs displacement differences and structural vibrations. The guide mechanism provides a precise vertical sliding path and upper and lower limit control, ensuring stable movement and reliable positioning of the overflow pipe, preventing swaying or jamming. The combination of the adjustment mechanism and the drive frame ensures that the driving force is evenly transmitted to the overflow pipe, achieving smooth lifting and lowering, and the limiting structure prevents damage to the bellows due to overtravel. Through this synergistic cooperation of flexible sealing and rigid guidance, active driving and passive limiting, the device significantly improves sealing reliability and operational safety while ensuring high-precision adjustment, balancing accuracy and lifespan, demonstrating the engineering advantages of combining rigidity and flexibility.

[0048] The following is a detailed description of each component of the adjustable overflow pipe device in this embodiment.

[0049] In this embodiment, the base pipe 7 is installed on the foundation structure (such as a water tank or water reservoir) or on the existing pipeline, and the overflow pipe 4 is connected to the base pipe through a flexible hose, with the top being the overflow port.

[0050] The base pipe 7 has a stable structure, making it easy to connect with existing pipes or pools, ensuring the concentricity and rigid support of the entire device, and making the lifting and lowering of the movable vertical pipe smooth. The overflow pipe 4 can move up and down to change the overflow height, realizing flexible adjustment of the overflow water level to adapt to different working conditions.

[0051] In this embodiment, the retractable pipeline 6 is a retractable flexible hose, such as a corrosion-resistant, highly flexible retractable corrugated pipe (e.g., rubber or PVC hose), to ensure sealing and durability, and to ensure unobstructed fluid flow. At the same time, the hose connection ensures no leakage, avoiding contamination or efficiency loss.

[0052] In practical scenarios, the retractable pipeline must satisfy the following condition: L1≥1.2L, where L is the preset overflow pipe lifting stroke and L1 is the effective extension length of the retractable corrugated pipe.

[0053] In this embodiment, the base pipe 7 and the retractable pipe 6 are detachably connected via a lower connecting flange assembly 9; the overflow pipe 4 and the retractable pipe 6 are detachably connected via an upper connecting flange assembly 8. This configuration ensures that both the retractable pipe 6 and the overflow pipe 4 are detachable, facilitating maintenance: the overflow pipe is detachable, making cleaning or replacement easy.

[0054] In this embodiment, the base plate pipe and the overflow pipe are sealed together by a retractable pipeline, and the connection is reliably sealed by a connecting flange assembly, ensuring that the fluid channel is continuous and leak-free during the lifting and adjustment process, avoiding leakage or pollution problems caused by pipe displacement, and improving the sealing reliability of the entire overflow system.

[0055] As shown in the figure, the guiding mechanism includes: N guide rods 11, the lower end of each guide rod is fixed to the base tube and extends vertically upward; each guide rod is provided with a lower stop block 12 and an upper stop block 13, N≥3. The N guide rods 11 are parallel to each other, providing a guide path that can slide up and down; the lower and upper stop blocks on the N guide rods are positioned correspondingly, providing the lower and upper limits of the guide path; a guide rod slider 14 is provided between the lower and upper stop blocks of each guide rod, and the periphery of the driving frame 3 is connected to the N guide rod sliders.

[0056] Those skilled in the art will understand that the guide assembly provides a precise vertical sliding guide path, preventing the movable vertical tube from shifting or swaying during lifting and lowering, ensuring the stability of the device's movement and the coaxiality of the sealing structure. Combined with the multi-point support and uniform force transmission of the drive frame, it ensures the accuracy and reliability of the overflow port height adjustment process. The upper and lower limit structures effectively prevent damage from over-travel.

[0057] In this embodiment, the guiding mechanism includes four guide rods. However, this invention is not limited to this. In other embodiments of this invention, more than three guide rods may be used, such as five or six, depending on the diameter of the chassis pipe and the overflow pipe. All of these methods can achieve the purpose of this invention and are also within the protection scope of this invention.

[0058] The lower end of each guide rod is welded and fixed to the outer perimeter of the base tube. The vertical positions of the lower stop block and the upper stop block on the guide rod are adjustable.

[0059] Furthermore, this embodiment also includes adjustable lower and upper stop blocks, allowing the vertical travel range of the guide assembly to be flexibly set according to operational needs. By adjusting the vertical position of the stop blocks on the guide rod, the maximum lifting stroke of the movable vertical pipe and the adjustable height range of the overflow port can be easily changed, thereby adapting to changes in pool depth, flow rate, or liquid level conditions. Specifically: ① When a higher overflow water level is required, the upper stop block can be moved upward to increase the lift; ② When a low water level is required, the upper stop block can be moved downward or the lower stop block can be moved upward to reduce the travel range. In addition, the adjustable design of the lower and upper stop blocks allows for quick repositioning of the limit positions during maintenance or repair without replacing the guide rod or other components, significantly improving on-site adjustment convenience and device adaptability.

[0060] In this embodiment, the adjusting mechanism includes: a gate hoist 1, which is fixed to the base plate via a mounting flange 10, and is used to control the raising and lowering of the overflow pipe. The drive frame 3 is a square steel frame structure, with four guide rod sliders 14 connected to its periphery, which slide and cooperate with the corresponding guide rods to maintain synchronous raising and lowering. The drive frame 3 is located between the gate hoist 1 and the overflow pipe 4, and is connected upward to the drive shaft 2 of the gate hoist, and downward to the overflow pipe 4 via M connecting rods 5, where M ≥ 3.

[0061] Those skilled in the art should understand that although this embodiment uses a gate hoist as the adjustment mechanism, the present invention is not limited thereto. In other embodiments of the present invention, a handwheel, motor, hydraulic cylinder, etc., may be used instead of a gate hoist. Although M=4 in this embodiment, the present invention is not limited thereto. In other embodiments of the present invention, three or more connecting rods may be used to connect the overflow pipe. These variations can also realize the present invention and are also within the protection scope of the present invention.

[0062] The adjustable overflow pipe device of this embodiment is described in general as follows: A section of telescopic corrugated pipe 6 is connected between the base pipe 7 and the overflow pipe 4 via a lower connecting flange group 9 and an upper connecting flange group 8. Four guide rods 11 are welded to the base pipe 7, and four connecting rods 5 on the overflow pipe 4 are connected to the drive frame 3. A guide rod sliding block 14 is provided on the drive frame 3, which can slide up and down on the guide rods 11. A detachable lower stop block 12 and an upper stop block 13 are provided on the guide rods 11 to limit the vertical sliding range. All the above components are installed on a fixed pipe using mounting flanges 10. The drive frame 3 is connected to the hoist 1 via a drive shaft 2. The hoist 1 drives the drive shaft to move up and down, thereby moving the drive frame 3 and the overflow pipe 4 up and down. In the extended state... Figure 1 As shown, in the contracted state as Figure 2 As shown, the up-and-down movement of the overflow pipe achieves variable water level overflow.

[0063] A water plant uses an existing movable overflow sleeve for inlet overflow, which consists of two steel pipes nested together with a sealing material in between, resulting in extremely high operational resistance. Subsequently, this invention was used to improve the overflow pipe device. Figure 3 and Figure 4 for Figure 1 The diagram shows the adjustable overflow pipe device in its extended and compressed states in a real-world scenario. As shown, the base pipe is connected to the existing steel pipe inside the water tank, and the hoist is fixed to the top structure of the water tank. When the water level in the tank is high, the overflow pipe is raised to its highest position, and the extendable pipe is in its extended state. Figure 3 As shown. When the water level in the tank is low, the overflow pipe is lowered to the low position, and the expandable pipe is in a compressed state, such as... Figure 4 As shown.

[0064] In a second exemplary embodiment of this invention, an adjustable overflow pipe device with automatic height adjustment of the overflow port is provided. Compared to the first embodiment, the adjustable overflow pipe in this embodiment adds an automatic control function.

[0065] Specifically, Figure 5 This is a schematic diagram of the adjustable overflow pipe device according to the second embodiment of this utility model. Figure 5 As shown in the figure, in this embodiment, the adjustable overflow pipe device further includes: a liquid level sensor group (not shown), which monitors the liquid level height around the base pipe, the retractable pipe, and the overflow pipe; and a control device, whose sensor signal input terminal is connected to the liquid level sensor and whose control signal output terminal is connected to the adjustment mechanism, including: an execution module, used to adjust the vertical height of the overflow port of the overflow pipe according to the liquid level height. In addition, the control device includes: a signal receiving module, used to receive external height control signals; and the execution module, also used to adjust the vertical height of the overflow port of the overflow pipe according to the height control signals.

[0066] With the above settings, the adjustable overflow pipe device of this embodiment can achieve the following beneficial effects:

[0067] ① Achieve automated operation: Through closed-loop control formed by liquid level sensor feedback, the device can automatically maintain a constant liquid level without human intervention, significantly improving the level of intelligent operation.

[0068] ② Improve liquid level control accuracy: The sensor monitors the liquid level changes in real time, and the control system can accurately drive the hoist to lift and lower, so as to minimize the error between the overflow height and the target liquid level and avoid the lag of manual adjustment.

[0069] ③ Reduce maintenance burden: Operators do not need to frequently adjust the overflow port position manually. They can set the liquid level target through the control panel or remote system, reducing labor costs.

[0070] In addition, in this embodiment, the adjustment mechanism is equipped with a travel limit switch; the control device includes a height display device for displaying the overflow port height position in real time; further details are omitted here.

[0071] This concludes the description of all embodiments of this utility model. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0072] It should be noted that for some implementation methods, if they are not key contents of this utility model and are well known to those skilled in the art, they are not described in detail in the accompanying drawings or text due to space limitations. In such cases, relevant prior art can be referred to for understanding.

[0073] The directional terms used in this utility model, such as "center," "lateral," "longitudinal," "top," "bottom," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," indicate only the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplification, 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. Furthermore, throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Also, the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but only illustrate the content of embodiments of this utility model.

[0074] Those skilled in the art will understand that in the claims and description of this utility model, the word "comprising" does not exclude the presence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the presence of a plurality of such elements (or steps).

[0075] Similarly, it should be understood that, for the sake of brevity, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this approach should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, each aspect of the invention comprises fewer than all the features of the preceding single embodiment. Furthermore, embodiments may be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the present invention.

[0076] The above specific embodiments have provided a detailed description of the purpose, technical means, and beneficial effects of this utility model. It should be understood that the purpose of the detailed description is to enable those skilled in the art to understand this utility model more clearly, and it is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable overflow pipe device, characterized in that, include: The base plate is fixedly installed on the foundation structure, and its lower end is connected to the drainage system; An overflow pipe is connected to the upper part of the base plate pipe via a retractable pipeline, and an overflow port is provided at its top; The guiding mechanism provides a vertical sliding guiding path with upper and lower limits; Adjustment mechanism, which provides the upward driving force; The drive frame is connected downward to the overflow pipe. Driven by the adjustment mechanism, the overflow pipe moves up and down along the vertical sliding guide path within the range defined by the upper and lower limits, thereby adjusting the vertical height of the overflow port.

2. The adjustable overflow pipe device according to claim 1, characterized in that, The guidance mechanism includes: N guide rods, each with its lower end fixed to the base plate and extending vertically upward; each guide rod is equipped with a lower stop block and an upper stop block, N≥3; Among them, N guide rods are parallel to each other, providing a guide path that can slide up and down; the lower and upper stop blocks on the N guide rods are positioned to correspond to each other, providing the lower and upper limits of the guide path; a guide rod slider is provided between the lower and upper stop blocks of each guide rod, and the periphery of the drive frame is connected to the N guide rod sliders.

3. The adjustable overflow pipe device according to claim 2, characterized in that, N=4; and / or, The lower end of each guide rod is welded and fixed to the periphery of the base tube; and / or, The vertical positions of the lower stop block and the upper stop block on the guide rod are adjustable.

4. The adjustable overflow pipe device according to claim 2, characterized in that, The regulating mechanism includes: a gate opener, which is located at the upper part of the overflow pipe; The drive frame is located between the gate hoist and the overflow pipe. It is connected upward to the drive shaft of the gate hoist and downward to the overflow pipe via M connecting rods, where M ≥ 3.

5. The adjustable overflow pipe device according to claim 4, characterized in that, The gate hoist is fixed to the base plate via a mounting flange; and / or M=4; The drive frame is a square steel frame structure with four guide rod sliders connected to its periphery, which slide and cooperate with the corresponding guide rods to maintain synchronous lifting.

6. The adjustable overflow pipe device according to claim 1, characterized in that, The retractable pipeline is: a retractable flexible hose; The base plate and the expandable corrugated pipe are detachably connected via a lower connecting flange assembly. The overflow pipe and the retractable corrugated pipe are detachably connected via an upper connecting flange assembly.

7. The adjustable overflow pipe device according to claim 6, characterized in that, The retractable hose is: a retractable corrugated hose made of rubber or PVC; and / or, The retractable hose satisfies the following condition: L1≥1.2L, where L is the preset overflow pipe lifting stroke; L1 is the effective extension length of the retractable corrugated pipe.

8. The adjustable overflow pipe device according to any one of claims 1 to 7, characterized in that, The base plate is fixed to the pool body, support frame, or existing pipeline; and / or, The adjustment mechanism includes one of the following: a handwheel, a motor, a hydraulic cylinder, or a gate opener.

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