A multi-dimensional vibration structure of a membrane module
By designing a multi-dimensional vibration structure for the membrane module, high-frequency, small-angle reciprocating rotational motion is used to break down impurity accumulation, thus solving the problems of membrane flux decay and increased energy consumption, and achieving high-efficiency filtration and long-term stable operation.
Patent Information
- Application Number
- CN202522675699.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-17
AI Technical Summary
In traditional membrane module filtration equipment, during dynamic operation, suspended solids and colloidal impurities in the water accumulate and compact on the inner surface of the membrane, forming a dense impurity shielding layer. This leads to a decrease in membrane flux, an increase in transmembrane pressure difference, a reduction in filtration efficiency, and an increase in energy consumption.
The membrane module adopts a multi-dimensional vibration structure. Through the reciprocating drive mechanism and the linkage mechanism, the membrane module equipment generates high-frequency, small-angle reciprocating rotational motion in the plane, forming fluid shear force and local pressure fluctuations, which disrupts impurity accumulation, promotes material migration, and prevents the formation of a fouling layer.
It effectively maintains membrane flux, reduces backwashing frequency, improves filtration efficiency and operational continuity, reduces energy consumption, and enhances mechanical reliability and lifespan.
Smart Images
Figure CN224937997U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of filtration equipment technology, specifically relating to a multi-dimensional vibration structure for membrane modules. Background Technology
[0002] In the field of membrane module filtration equipment technology, traditional filtration methods mainly rely on inlet water pressure to drive water through the membrane surface to achieve the interception and separation of impurities. For dynamically operating membrane modules, this single pressure-driven mode has significant drawbacks: during continuous filtration, suspended solids and colloidal impurities in the water rapidly accumulate and compact on the inner surface of the membrane, forming a dense impurity shielding layer, leading to a sharp decline in membrane flux and a continuous increase in transmembrane pressure difference. This phenomenon not only significantly reduces filtration efficiency but also forces the system to frequently start and stop for backwashing to restore membrane performance, resulting in increased operating energy consumption, operational interruptions, and accelerated mechanical fatigue of the membrane material. Utility Model Content
[0003] The purpose of this invention is to provide a multidimensional vibration structure for membrane modules that can solve the above-mentioned technical problems.
[0004] The specific technical solution adopted by this utility model is as follows: This utility model provides a multidimensional vibration structure for a membrane module, including a base and a reciprocating drive mechanism disposed on the base. A reciprocating support shaft and a membrane module device are disposed above the base. The membrane module device is fixedly installed on the upper end of the reciprocating support shaft, and the lower end of the reciprocating support shaft is connected to the reciprocating drive mechanism. A frame mechanism for stabilizing the reciprocating support shaft and the membrane module device is disposed on the base. The reciprocating drive mechanism includes a reciprocating shaft, a reciprocating disc, a drive motor, and a linkage mechanism. The reciprocating disc is fixed on the reciprocating shaft and is connected to the drive motor through the linkage mechanism. The drive motor is fixedly mounted on the base. The lower end of the reciprocating shaft is rotatably mounted on the base via a bearing seat, and the upper end of the reciprocating shaft is detachably connected to the lower end of the reciprocating support shaft.
[0005] Preferably, the linkage mechanism includes a main rotating shaft, a secondary rotating shaft, a push-pull plate, and a main turntable. The main turntable is mounted on the output shaft of the drive motor via a key connection, and the main turntable is located below the outer periphery of the reciprocating disk. The main rotating shaft is rotatably mounted on the main turntable on a side off-center via a bearing, and the secondary rotating shaft is rotatably mounted on the reciprocating disk on a side close to the outer periphery via a bearing. The push-pull plate is positioned between the reciprocating plate and the main turntable, and both ends of the push-pull plate are rotatably connected to the upper end of the main rotating shaft and the lower end of the auxiliary rotating shaft respectively via bearings.
[0006] Preferably, the frame mechanism includes a support frame and two sets of side plates disposed on the support frame, each set of side plates including two pieces, and a stabilizing plate is fixed between the two side plates; Both ends of the reciprocating support shaft are rotatably mounted via bearing seats, and the upper and lower bearing seats are respectively fixedly mounted on the upper and lower stabilizing plates.
[0007] Preferably, the membrane module is detachably mounted on the upper end of the reciprocating support shaft. The outer periphery of the membrane module is rotated and held by two sets of stabilizers, and each set of stabilizers includes two stabilizing rollers, both of which are in rolling contact with the outer periphery of the membrane module.
[0008] Preferably, the upper opposite ends of the support frame are provided with two sets of extended brackets, each corresponding to one of the two sets of stabilizers. The central shafts of the two stabilizing wheels in each set of stabilizers are rotatably mounted on the same set of extension supports.
[0009] Preferably, the inlet end of the membrane module equipment is detachably equipped with an inlet pipe, and the outlet end of the membrane module equipment is detachably equipped with an outlet pipe, with the outlet pipe located in the upper internal space of the support frame.
[0010] Preferably, the reciprocating rotation angle range of the drive motor driving the reciprocating disc through the linkage mechanism is 5-30°.
[0011] Preferably, two pull-back members are provided above the base. The two pull-back members are symmetrically arranged on both sides of the reciprocating disc, and the opposite ends of the two pull-back members are respectively connected to the first hanging holes symmetrically opened on the reciprocating disc. The opposite ends of the two pull-back members are respectively connected to the second hanging holes opened on the two side plates on the lower side.
[0012] The beneficial effects are: 1. This invention utilizes the synergistic effect of a reciprocating drive mechanism and a linkage mechanism to generate high-frequency, small-angle reciprocating rotational motion within a plane in the membrane module equipment. This specific form of mechanical vibration creates continuously changing fluid shear forces and local pressure fluctuations on the membrane surface and inside the membrane pores, effectively disrupting the accumulation process of impurities on the inner surface of the membrane and preventing the formation of a dense fouling layer. Simultaneously, multidimensional vibration promotes the radial migration and redispersion of substances within the membrane boundary layer, significantly reducing concentration polarization and making it difficult for trapped impurities to stably adhere to the membrane surface. This active antifouling mechanism allows the membrane flux to be maintained at a high level for a long period, with a slow increase in transmembrane pressure differential, significantly reducing the frequency and intensity of backwashing, thereby fundamentally improving the system's filtration efficiency, operational continuity, and energy economy.
[0013] 2. This utility model, through a frame mechanism, provides robust axial and radial support for the reciprocating support shaft via upper and lower stabilizing plates and bearing seats, forming a stable rotational core. The symmetrically arranged stabilizing components on the outer periphery of the membrane module equipment, with their specifically designed stabilizing rollers, achieve flexible clamping and precise positioning of the equipment body, thus constraining unintended vibrations while allowing for low-resistance reciprocating rotation. The extended support further enhances the rigidity of the stabilizing roller support system. This entire stability design, from core to periphery, collectively ensures that the membrane module equipment possesses excellent mechanical reliability, vibration suppression capabilities, and service life during long-term, high-frequency reciprocating rotation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the reciprocating drive mechanism of this utility model.
[0015] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Reciprocating drive mechanism; 21. Reciprocating shaft; 22. Reciprocating disc; 23. Pull-back component; 24. Secondary rotating shaft; 25. Push-pull plate; 26. Main rotating shaft; 27. Main turntable; 28. Drive motor; 3. Reciprocating support shaft; 4. Support frame; 5. Side plate; 6. Stabilizing plate; 7. Membrane module equipment; 8. Inlet pipe; 9. Outlet pipe; 10. Extension bracket; 11. Stabilizing wheel. Detailed Implementation
[0016] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.
[0017] like Figure 1-2 As shown, a multidimensional vibration structure for a membrane module includes a base 1 and a reciprocating drive mechanism 2 disposed on the base 1. A reciprocating support shaft 3 and a membrane module device 7 are disposed above the base 1. The membrane module device 7 is fixedly installed on the upper end of the reciprocating support shaft 3, and the lower end of the reciprocating support shaft 3 is connected to the reciprocating drive mechanism 2. A frame mechanism for stabilizing the reciprocating support shaft 3 and the membrane module device 7 is disposed on the base 1. The membrane module device 7 is a membrane filter. The reciprocating drive mechanism 2 includes a reciprocating shaft 21, a reciprocating disk 22, a drive motor 28, and a linkage mechanism. The reciprocating disk 22 is fixed on the reciprocating shaft 21, and the reciprocating disk 22 is connected to the drive motor 28 through the linkage mechanism. The drive motor 28 is fixedly installed on the base 1. The input end of the drive motor 28 is electrically connected to the output end of an external controller. The drive motor 28 is a servo motor or stepper motor with a rated torque of not less than 15 N·m, and its speed is adjustable in the range of 100-500 rpm. The lower end of the reciprocating shaft 21 is rotatably mounted on the base 1 via a bearing seat, and the upper end of the reciprocating shaft 21 is detachably connected to the lower end of the reciprocating support shaft 3.
[0018] As an optional implementation, the linkage mechanism includes a main rotating shaft 26, a secondary rotating shaft 24, a push-pull plate 25, and a main rotating disk 27. The main rotating disk 27 is mounted on the output shaft of the drive motor 28 via a key connection, and the main rotating disk 27 is located below the outer periphery of the reciprocating disk 22. The main rotating shaft 26 is rotatably mounted on the main rotating disk 27 on a side off-center via a bearing, and the secondary rotating shaft 24 is rotatably mounted on the reciprocating disk 22 on a side close to the outer periphery via a bearing. The push-pull plate 25 is positioned between the reciprocating plate 22 and the main turntable 27. Both ends of the push-pull plate 25 are rotatably connected to the upper end of the main rotating shaft 26 and the lower end of the auxiliary rotating shaft 24 respectively through bearings. Thus, when the drive motor 28 drives the main turntable 27 to rotate, the reciprocating plate 22 can be reciprocated through the transmission of the push-pull plate 25, thereby driving the membrane module equipment 7 to achieve reciprocating motion.
[0019] See attached document Figure 1 and attached Figure 2 The frame structure includes a support frame 4 and two sets of side plates 5 set on the support frame 4. Each set of side plates 5 includes two pieces, and a stabilizing plate 6 is fixed between the two side plates 5. Both ends of the reciprocating support shaft 3 are rotatably mounted through bearing seats, and the upper and lower bearing seats are respectively fixedly mounted on the upper and lower stabilizing plates 6. In this way, the upper and lower stabilizing plates 6 can form a stable rotational support for the reciprocating support shaft 3, thereby improving the synchronous drive stability of the membrane module equipment 7.
[0020] Furthermore, the membrane module device 7 is detachably mounted on the upper end of the reciprocating support shaft 3. The outer periphery of the membrane module device 7 is rotated and held by two sets of stabilizers, and each set of stabilizers includes two stabilizing rollers 11. Both stabilizing rollers 11 are in rolling contact with the outer periphery of the membrane module device 7. The two stabilizing rollers 11 in the same set are centered on the radial cross-section center of the corresponding membrane module device 7, and the included angle between them is set to 20 degrees. This allows the two sets of stabilizers to form a symmetrical rotational constraint on the membrane module device 7, thereby improving the stability of the membrane module device 7 during reciprocating rotation.
[0021] Furthermore, two sets of extended brackets 10 are provided on the opposite ends of the upper side of the support frame 4, which correspond to the two sets of stabilizing components respectively; The central shafts of the two stabilizing wheels 11 in each set of stabilizers are rotatably mounted on the same set of extension brackets 10. This allows the extension brackets 10 to provide stable rotational support for the stabilizing wheels 11, thereby effectively constraining the outer periphery of the membrane module equipment 7 through the stabilizing wheels 11, and further improving the overall stability of the membrane module equipment 7 during reciprocating rotation.
[0022] Furthermore, the inlet end of the membrane module equipment 7 is detachably equipped with an inlet pipe 8, and the outlet end of the membrane module equipment 7 is detachably equipped with an outlet pipe 9. The outlet pipe 9 is located in the upper internal space of the support frame 4. Both the inlet pipe 8 and the outlet pipe 9 are flexible hoses, and the extended length after installation is twice the initial installation length. This ensures that the inlet pipe 8 and the outlet pipe 9 have sufficient deformation margin when the membrane module equipment 7 reciprocates, and will not affect the normal reciprocating motion of the membrane module equipment 7.
[0023] Furthermore, the drive motor 28 drives the reciprocating disc 22 through the linkage mechanism to achieve a reciprocating rotation angle range of 5-30°, preferably 15°, thereby utilizing the 15° reciprocating rotation motion to enhance the shearing effect on the fluid inside the membrane module equipment 7 and improve the filtration efficiency.
[0024] Furthermore, two pull-back members 23 are provided above the base 1. The two pull-back members 23 are symmetrically arranged on both sides of the reciprocating plate 22, and the opposite ends of the two pull-back members 23 are respectively connected to the first hanging holes symmetrically opened on the reciprocating plate 22. The opposite ends of the two pull-back members 23 are respectively connected to the second hanging holes opened on the two side plates 5 on the lower side. In this way, when the reciprocating plate 22 reciprocates, the pull-back members 23 can provide a reverse restoring force, reduce the impact and jerking during the reciprocating rotation process, and improve the smoothness of the reciprocating motion. The pull-back component 23 is made of stainless steel spring or polyurethane elastomer with a stiffness coefficient designed to be 50-100 N / mm. During installation, a pre-compression of 5-8% is applied so that the pull-back component 23 can provide a radial restoring force of 20-40 N when the reciprocating disc 22 is at its maximum deflection angle. This parameter design ensures that the system's natural frequency is far away from the operating frequency band, which can effectively suppress resonance without excessively increasing the drive load.
[0025] With the above structure, the drive motor 28 starts upon receiving a controller command, driving the main turntable 27 to rotate continuously. The eccentrically positioned main shaft 26 pulls the push-pull plate 25 in planar motion. The push-pull plate 25 then drives the reciprocating disc 22 to rotate periodically in both directions via the auxiliary shaft 24. This rotation is transmitted to the reciprocating support shaft 3 via the reciprocating shaft 21, ultimately driving the membrane module equipment 7 to rotate at a high frequency at an angle of 5-30° (preferably 15°). During this process, the frame mechanism ensures the stable rotation of the reciprocating support shaft 3 through a rigid support system composed of the upper and lower stabilizing plates 6 and the bearing seats. Two sets of stabilizing rollers 11, symmetrically arranged at a 20° angle, maintain rolling contact with the outer periphery of the membrane module equipment 7, forming radial constraint. Simultaneously, the symmetrically arranged pull-back members 23 consistently provide a reverse restoring torque when the reciprocating disc 22 swings, effectively suppressing inertial impact.
[0026] The entire stabilization system works in synergy to ensure the trajectory accuracy and mechanical reliability of the membrane module equipment 7 under high-frequency reciprocating conditions. It also generates a continuously changing fluid shear force on the membrane surface through the multidimensional vibration effect, which effectively destroys the pollutant adhesion layer and significantly improves filtration efficiency and operational stability.
[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, and is common knowledge in the field. Furthermore, this application is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented in accordance with conventional methods in the field and relevant national standards.
Claims
1. A multidimensional vibration structure for a membrane module, characterized in that: Includes a base (1) and a reciprocating drive mechanism (2) disposed on the base (1). A reciprocating support shaft (3) and a membrane module device (7) are disposed above the base (1). The membrane module device (7) is fixedly installed on the upper end of the reciprocating support shaft (3), and the lower end of the reciprocating support shaft (3) is connected to the reciprocating drive mechanism (2). A frame mechanism for stabilizing the reciprocating support shaft (3) and the membrane module device (7) is disposed on the base (1). The reciprocating drive mechanism (2) includes a reciprocating shaft (21), a reciprocating disk (22), a drive motor (28), and a linkage mechanism. The reciprocating disk (22) is fixed on the reciprocating shaft (21), and the reciprocating disk (22) is connected to the drive motor (28) through the linkage mechanism. The drive motor (28) is fixedly installed on the base (1). The lower end of the reciprocating shaft (21) is rotatably mounted on the base (1) via a bearing seat, and the upper end of the reciprocating shaft (21) is detachably connected to the lower end of the reciprocating support shaft (3).
2. The multidimensional vibration structure of a membrane module according to claim 1, characterized in that: The linkage mechanism includes a main rotating shaft (26), a secondary rotating shaft (24), a push-pull plate (25), and a main turntable (27). The main turntable (27) is connected to the output shaft of the drive motor (28) by a key and is located below the outer periphery of the reciprocating disk (22). The main rotating shaft (26) is rotatably mounted on the main turntable (27) off-center by a bearing. The secondary rotating shaft (24) is rotatably mounted on the reciprocating disk (22) near the outer periphery by a bearing. The push-pull plate (25) is disposed between the reciprocating plate (22) and the main turntable (27), and the two ends of the push-pull plate (25) are rotatably connected to the upper end of the main rotating shaft (26) and the lower end of the auxiliary rotating shaft (24) respectively through bearings.
3. The multidimensional vibration structure of a membrane module according to claim 2, characterized in that: The frame structure includes a support frame (4) and two sets of side plates (5) disposed on the support frame (4). Each set of side plates (5) includes two pieces, and a stabilizing plate (6) is fixed between the two side plates (5). The upper and lower ends of the reciprocating support shaft (3) are rotatably mounted through bearing seats, and the upper and lower bearing seats are respectively fixedly mounted on the upper and lower stabilizing plates (6).
4. The multidimensional vibration structure of a membrane module according to claim 3, characterized in that: The membrane module device (7) is detachably mounted on the upper end of the reciprocating support shaft (3). The outer periphery of the membrane module device (7) is rotated and held by two sets of stabilizers, and each set of stabilizers includes two stabilizing rollers (11). Both stabilizing rollers (11) are in rolling contact with the outer periphery of the membrane module device (7).
5. The multidimensional vibration structure of a membrane module according to claim 4, characterized in that: The support frame (4) has two sets of extended brackets (10) on its upper opposite ends, which are respectively corresponding to the two sets of stabilizers. The central shafts of the two stabilizing wheels (11) in each set of stabilizers are rotatably mounted on the same set of extension brackets (10).
6. The multidimensional vibration structure of a membrane module according to claim 5, characterized in that: The inlet end of the membrane module device (7) is detachably equipped with an inlet pipe (8), and the outlet end of the membrane module device (7) is detachably equipped with an outlet pipe (9), and the outlet pipe (9) is located in the upper inner space of the support frame (4).
7. The multidimensional vibration structure of a membrane module according to claim 6, characterized in that: The reciprocating rotation angle range of the drive motor (28) driven by the linkage mechanism to drive the reciprocating disc (22) is 5-30°.
8. The multidimensional vibration structure of a membrane module according to claim 7, characterized in that: Two pull-back components (23) are provided above the base (1). The two pull-back components (23) are symmetrically arranged on both sides of the reciprocating plate (22). The opposite ends of the two pull-back components (23) are respectively connected to the first hanging holes symmetrically opened on the reciprocating plate (22), and the opposite ends of the two pull-back components (23) are respectively connected to the second hanging holes opened on the two side plates (5) on the lower side.