A push flow device suitable for HDPE membrane ponds

Abstract

The utility model relates to water treatment equipment technical field discloses a kind of push flow device suitable for HDPE membrane pool, including dam body base, bottom plate, support frame, push flow ware, hand-operated hoist and steel wire rope installed on dam body base, push flow ware is fixed on support frame by push flow ware sliding, fixedly provided with mounting seat on bottom plate, the horizontal pole of support frame bottom is rotationally connected in mounting seat, the adjustment of support frame angle can be realized to adapt to the installation demand of different slope of HDPE membrane pool, slide for guiding push flow ware to move up and down is equipped on support frame, push flow ware slides along slide to adjust its height to adapt to the requirement of different operation depth.The utility model can adjust the angle of support frame to facilitate installation, also can adjust push flow ware height to adapt to the requirement of different operation depth, also can be dispersed by large-area base pressure and the non-contact design of push flow ware, effectively protect HDPE membrane, more practical and more convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, and in particular to a flow propulsion device suitable for HDPE membrane tanks. Background Technology

[0002] Flow mixing devices are commonly used equipment in water treatment processes. For example, in anaerobic tanks, anoxic tanks, or oxidation ditches in wastewater treatment plants, flow mixing devices are used to stir the liquid in the tank, realize water flow, mix, and prevent sludge settling.

[0003] HDPE (high-density polyethylene) membrane tanks have become core facilities in wastewater treatment, biogas fermentation, and tailings dam seepage prevention due to their excellent impermeability, chemical corrosion resistance, and long service life. The smooth surface of the HDPE membrane effectively blocks liquid seepage and resists erosion by corrosive media such as acids, alkalis, and salts, significantly reducing maintenance costs. However, while this HDPE membrane material offers excellent seepage prevention, its mechanical strength is limited, making it susceptible to puncture by sharp objects or wear and damage under long-term localized high pressure. Furthermore, the sloped design of HDPE membrane tank walls presents challenges for installing flow propulsion devices within them.

[0004] Existing flow propulsion devices mainly include float-type shallow flow propulsion devices, bridge-type mixing devices, and semi-bridge-type flow propulsion devices with lifting mechanisms. However, float-type shallow flow propulsion devices are suspended on the water surface by buoyancy devices and are only suitable for mixing shallow water bodies, resulting in insufficient depth, especially unsuitable for deeper HDPE membrane tanks. Bridge-type mixing devices have the significant drawback of difficult installation, requiring the pre-embedding of heavy-duty bridge structures. For newly built tanks, installation interfaces need to be reserved, and the construction period can be as long as 2-3 weeks. When retrofitting existing HDPE membrane tanks, the original membrane needs to be damaged for bridge fixing, posing a risk of secondary damage to the anti-seepage layer. The semi-bridge type lifting and propulsion device has two major structural defects in HDPE membrane tank applications: First, insufficient mechanical redundancy and adaptability. The lifting mechanism adopts a multi-stage hydraulic or electric push rod structure, which increases the equipment failure rate by more than 40%. The lifting stroke is usually limited to within 3 meters, which cannot meet the full-layer propulsion requirements of 5-8 meter deep tanks. In biogas digesters, the lifting mechanism is easily corroded by biogas, and the average maintenance cycle is shortened to 6 months. Second, there is the risk of contact wear. The lifting guide rail is in direct contact with the HDPE membrane, and long-term friction will cause the membrane thickness to decrease by 0.2-0.5 mm per year. Under sewage treatment conditions, sandy water flow will aggravate wear and may cause membrane perforation and leakage. The expansion and contraction of the membrane caused by temperature changes will cause fluctuations in contact stress and accelerate material fatigue.

[0005] More importantly, existing propulsion devices often lack the flexibility to adjust their operating depth underwater. When the water level in the pool changes or the process flow field needs to be altered, operators cannot easily adjust the position of the propulsion device. This often leads to low propulsion efficiency or the creation of dead zones in the pool, affecting the overall treatment effect. Therefore, there is an urgent need for a propulsion device that allows for easy adjustment of the propulsion depth and is easy to install.

[0006] Therefore, this utility model proposes a flow propulsion device suitable for HDPE membrane tanks to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a propulsion device suitable for HDPE membrane tanks, aiming to improve the problems of difficult installation and difficulty in flexibly adjusting the propulsion depth underwater after installation in the prior art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A flow propulsion device suitable for HDPE membrane tanks includes: a dam base, a base plate, a support frame, a flow propulsion device, a hand-cranked hoist, and a steel wire rope.

[0010] The dam base is located on the dam body of the HDPE membrane tank. The base plate is located at the bottom of the HDPE membrane tank. The propeller is slidably installed on the support frame. The hand-cranked hoist is installed on the dam base. The wire rope connects the hand-cranked hoist and the propeller.

[0011] The core structure of this utility model also includes a mounting base on the base plate and a crossbar at the bottom of the support frame.

[0012] The support frame is mounted on the mounting base by means of a crossbar in a rotatable connection, which realizes the angle adjustment function of the support frame relative to the base plate. It is used to adjust the angle of the support frame and the flow generator on it, which facilitates the installation of the device, and is especially suitable for the installation of HDPE membrane tanks with different slopes.

[0013] Furthermore, the support frame is equipped with a slide rail for guiding the propeller to move up and down. The propeller can adjust its vertical position by sliding a steel wire rope through this slide rail.

[0014] Preferably, the support frame is equipped with a sliding pulley and a fixed pulley; the wire rope passes around the sliding pulley and the fixed pulley to pull the propeller.

[0015] Preferably, the wire rope is fixedly connected to the propeller via a fixing buckle.

[0016] Preferably, the jet generator is mounted on the slide rail of the support frame via a jet generator mounting bracket.

[0017] Preferably, the support frame has a grid-shaped structure, and the slide rails are set on the vertical rods of the support frame.

[0018] Preferably, the flow propulsion device for HDPE membrane tanks further includes a sliding circular tube, a sleeve, a fixing rod, and a fixing fulcrum; the sliding circular tube is mounted on the support frame via the fixing rod and the fixing fulcrum, the sleeve is located at the bottom of the flow propulsion frame and is sleeved on the outside of the sliding circular tube, and the sleeve can slide up and down in the sliding circular tube to provide auxiliary support or guidance for the flow propulsion.

[0019] Preferably, the propulsion device for HDPE membrane tanks further includes a hydraulic device mounted on the dam base for fine-tuning the angle of the support frame and further adjusting the propulsion direction of the propulsion device.

[0020] Preferably, the flow promoter is a horizontal flow promoter.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by adopting a lifting system composed of a hand-cranked hoist, steel wire rope and slide rail, the height of the thruster can be easily adjusted to meet the thrusting requirements at different depths; at the same time, a rotating structure composed of a crossbar and mounting base is provided to facilitate the installation of HDPE membrane tanks with different slopes. This solves the problem that existing thrusters are difficult to flexibly adjust the working depth underwater and are difficult to install, and achieves the technical effect of precise thruster position adjustment and convenient installation.

[0023] 2. In this utility model, by setting a large-area dam base and bottom plate, the contact and force-bearing area is increased, which solves the problem that the existing propulsion device support structure may generate local high pressure at the bottom of the HDPE membrane tank, resulting in membrane damage. Moreover, the propulsion device does not directly contact the HDPE membrane, which also avoids damage to the HDPE membrane during operation, thus achieving the technical effect of effectively protecting the geomembrane of the HDPE membrane tank. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a flow propulsion device suitable for HDPE membrane tanks proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the sliding wheel structure of a flow propulsion device suitable for HDPE membrane tanks proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a fixing rod for a flow propulsion device suitable for HDPE membrane tanks proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the fixed support point of a flow propulsion device suitable for HDPE membrane tanks proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the sliding circular tube of a flow propulsion device suitable for HDPE membrane tanks proposed in this utility model.

[0029] Legend:

[0030] 1. Dam base; 2. Hand-cranked hoist; 3. Wire rope; 4. Support frame; 5. Sliding circular pipe; 6. Flow actuator; 7. Base plate; 8. Mounting seat; 9. Crossbar; 10. Fixing rod; 11. Fixed fulcrum; 12. Hydraulic device; 13. Fixing buckle; 14. Sliding wheel; 15. Sleeve; 16. Flow actuator fixing frame; 17. Fixed pulley. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please refer to Figures 1 to 5 This utility model provides a propulsion device suitable for HDPE membrane tanks, which aims to solve the problems of existing propulsion devices being difficult to install, the propulsion device being difficult to adjust the depth and angle underwater, and the support structure being easily damaged by the geomembrane at the bottom of the HDPE membrane tank.

[0033] like Figure 1 As shown, the propulsion device for HDPE membrane tanks includes a dam base 1, which is located on the dam of the HDPE membrane tank, and a base plate 7 located at the bottom of the HDPE membrane tank. The dam base 1 and the base plate 7 together constitute the basic support structure of the device. The base plate 7 is designed with a large area to increase the contact area with the HDPE membrane tank, thereby reducing the damage to the HDPE membrane caused by local high pressure and protecting the HDPE membrane. The device also includes a support frame 4, a propulsion device 6, a hand-cranked hoist 2, and a steel wire rope 3. The hand-cranked hoist 2 is installed on the dam base 1, and the propulsion device 6 is slidably installed on the support frame 4. The steel wire rope 3 connects the hand-cranked hoist 2 and the propulsion device 6. The propulsion device 6 is located on the support frame 4 to avoid direct contact with the HDPE membrane and to prevent damage to the HDPE membrane during operation.

[0034] The core structure of this embodiment is as follows: Figure 1 and Figure 4 As shown, a mounting base 8 is fixedly installed on the base plate 7; as Figure 1As shown, the support frame 4 is rotatably connected to the mounting base 8 via the crossbar 9 at its bottom; specifically, the crossbar 9 is inserted into the mounting base 8 and can rotate within the mounting base 8. The angle of the support frame 4 can be adjusted by rotating the crossbar 9 to adapt to the installation needs of HDPE membrane tanks with different slopes.

[0035] Meanwhile, the support frame 4 is equipped with a slide rail for guiding the thruster 6 to move up and down; the thruster 6 can be slidably installed on this slide rail and slide along the slide rail by the traction of the wire rope 3; by operating the hand-cranked hoist 2 installed on the dam base 1, the hand-cranked hoist 2 drives the wire rope 3 to be raised and lowered, and the wire rope 3 pulls the thruster 6 to move up and down precisely along the slide rail of the support frame 4, thereby realizing the adjustment of the working depth of the thruster 6.

[0036] Please refer to the following carefully. Figure 1 and Figure 2 The core structure will be described in detail below:

[0037] The support frame 4 is equipped with a sliding wheel 14 and a fixed pulley 17; for example Figure 2 As shown, the sliding wheel 14 is rotatably mounted on the support frame 4; as Figure 1 As shown, one end of the wire rope 3 is connected to the hand-cranked hoist 2, and the other end passes through the fixed pulley 17 and the sliding pulley 14 in sequence, and is finally fixedly connected to the pusher 6 through the fixing buckle 13; the sliding pulley 14 and the fixed pulley 17 together construct an efficient and stable transmission path for the wire rope 3, ensuring that the wire rope 3 moves smoothly during the winding and unwinding process, and accurately guides the pusher 6 to move along the slide.

[0038] Meanwhile, the propeller 6 itself is slidably connected to the slide rail of the support frame 4 through the propeller fixing frame 16. The propeller fixing frame 16 is the carrier for realizing the sliding cooperation between the propeller 6 and the slide rail. This structure ensures that the propeller 6 is stable in posture during the lifting and lowering process and can resist the reaction force of the water flow during the propulsion operation.

[0039] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0040] As a preferred embodiment, in order to improve the structural strength and stability of the support frame 4, the support frame 4 adopts a grid-shaped structure, and the slide rail is preferably set on the vertical rod of the support frame 4.

[0041] In another preferred embodiment, to provide auxiliary support or guidance, the device further includes a sliding circular tube 5, a sleeve 15, a fixed rod 10, and a fixed fulcrum 11; please refer to Figure 1 , Figure 3 and Figure 4The sliding circular tube 5 is fixedly connected to the support frame 4 by the fixed rod 10 and the fixed fulcrum 11. The sleeve 15 is located at the bottom of the propeller fixing frame 16 and is sleeved on the outside of the sliding circular tube 5. This structure is used to provide auxiliary support or guidance for the propeller 6, which can ensure the stability of the propeller 6 during the sliding process and operation.

[0042] As another preferred embodiment, in order to achieve fine adjustment of the position of the support frame 4, the device also includes a hydraulic device 12; the hydraulic device 12 is disposed between the dam base 1 and the support frame 4, and the hydraulic device 12 is used to fine adjust the angle of the support frame 4 on the base plate 7. By adjusting the position and angle of the support frame 4, the direction of the flow pusher 6 can be adjusted, thereby achieving fine adjustment of the flow direction.

[0043] As another preferred embodiment, in order to achieve horizontal flow propulsion, the propeller 6 is preferably a horizontal propeller.

[0044] Working principle: During deployment, the entire device is placed in the HDPE membrane tank. The dam base 1 is fixed to the dam of the HDPE membrane tank, and the bottom plate 7 is fixed to the bottom of the HDPE membrane tank. The area of ​​the bottom plate 7 is as large as possible. By increasing its contact area with the bottom of the tank, the overall weight of the equipment is effectively distributed, the pressure on the HDPE membrane tank is reduced, and thus the damage to the membrane at the bottom of the tank is reduced.

[0045] When the slope of the HDPE membrane tank is different, the crossbar 9 at the bottom of the support frame 4 can be rotatably connected in the mounting seat 8 of the base plate 7. The angle of the support frame 4 can be adjusted by rotating the crossbar 9 to adapt to the installation needs of HDPE membrane tanks with different slopes. If it is necessary to fine-tune the position of the support frame 4, the hydraulic device 12 can also be activated. The hydraulic device 12 is used to fine-tune the angle of the support frame 4 on the dam base 1. By adjusting the position and angle of the support frame 4, the direction of the flow pusher 6 can be adjusted, thereby achieving fine adjustment of the flow direction.

[0046] When it is necessary to adjust the depth of the propulsion operation, the hand-cranked hoist 2 installed on the dam base 1 is operated. The hand-cranked hoist 2 pulls the propulsion device 6 by winding and unwinding the wire rope 3. Under the guidance and limitation of the fixed pulley 17 and the sliding wheel 14, the wire rope 3 pulls the propulsion device 6 through the fixing buckle 13. The propulsion device 6 slides smoothly up and down on the slide rail of the support frame 4 with the help of the propulsion device fixing frame 16, until the predetermined operating depth is reached. Then, the wire rope 3 is fixed to fix the propulsion device 6 in the designated position. The support frame 4 is preferably a grid-shaped structure, and the slide rail is set on its vertical rod. The sliding round tube 5 is installed on the support frame 4 through the fixing rod 10 and the fixing fulcrum 11. The sleeve 15 is set at the bottom of the propulsion device fixing frame 16 and is sleeved on the outside of the sliding round tube 5, thereby providing auxiliary support and guidance for the propulsion device 6.

[0047] When the propeller 6 is preferably a horizontal propeller and is adjusted to a suitable position, the propeller 6 can be started to carry out the propulsion operation; through the synergistic effect of the above-mentioned dam base 1, bottom plate 7, mounting seat 8, crossbar 9, support frame 4, hand-cranked hoist 2 and wire rope 3, this utility model solves the problems of difficulty in flexibly adjusting the propulsion depth and installation difficulties in the prior art.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flow propulsion device suitable for HDPE membrane tanks, characterized in that, include: The dam base (1) is located on the dam body of the HDPE membrane pool; A base plate (7) is provided at the bottom of the HDPE membrane tank, and a mounting base (8) is provided on the base plate (7); A support frame (4) is rotatably connected to the mounting base (8) via a crossbar (9) at its bottom; The propeller (6) is slidably mounted on the support frame (4); A hand-cranked hoist (2) is installed on the dam base (1); A steel wire rope (3) connects the hand-cranked hoist (2) and the propeller (6); The support frame (4) is provided with a slide for guiding the pusher (6) to move up and down, and the pusher (6) can slide along the slide via the wire rope (3).

2. The flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: The support frame (4) is provided with a sliding wheel (14) and a fixed pulley (17); the wire rope (3) passes around the sliding wheel (14) and the fixed pulley (17) to pull the thruster (6).

3. The flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: The wire rope (3) is connected to the thruster (6) via a fixing buckle (13).

4. The flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: The propeller (6) is mounted on the slide of the support frame (4) via the propeller mounting bracket (16).

5. A flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: The support frame (4) has a grid-shaped structure, and the slide is set on the vertical rod of the support frame (4).

6. A flow propulsion device suitable for HDPE membrane tanks according to claim 4, characterized in that: It also includes a sliding round tube (5), a sleeve (15), a fixing rod (10), and a fixing fulcrum (11); the sliding round tube (5) is installed on the support frame (4) through the fixing rod (10) and the fixing fulcrum (11), the sleeve (15) is located at the bottom of the flow generator fixing frame (16), and the sleeve (15) is sleeved on the outside of the sliding round tube (5).

7. A flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: It also includes a hydraulic device (12) which is mounted on the dam base (1) for fine-tuning the angle of the support frame (4).

8. A flow propulsion device suitable for HDPE membrane tanks according to claim 1, characterized in that: The propeller (6) is a horizontal propeller.

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