High-precision filtering double-layer structure filter

Abstract

The utility model provides a high-precision filtering double-layer structure filter, which relates to the technical field of filters and comprises a straight cylinder filter and a sleeve filter, the top end of the straight cylinder filter and the bottom end of the sleeve filter are respectively provided with a filtering driving component, and the sleeve filter is internally provided with a filtering inner cavity and a filtering outer cavity. The straight cylinder filter is located at a filtering inner cavity of the sleeve filter, a partition assembly is arranged on the outer wall of the filtering inner cavity in the sleeve filter, a first spiral flow guide plate and a second spiral flow guide plate are arranged in the straight cylinder filter, and a third spiral flow guide plate is arranged on the inner wall of the filtering inner cavity, so that the classified centrifugal filtering function on fluid is realized; the outer-layer sleeve filter firstly removes large particles by virtue of a filter screen with relatively large meshes to prevent the large particles from blocking an inner layer, and the inner-layer straight-cylinder filter accurately captures tiny impurities in a rotating state by virtue of a fine filter screen and an internal spiral guide plate, so that the overall filtering precision is greatly improved, and the cost of frequently replacing a filter element is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field especially relates to a high accuracy filtration's double -deck structure filter. BACKGROUND

[0002] According to the double -deck high -speed filter of Chinese open number CN108744621A discloses, the filter includes base, the cylinder body, the cylinder body is installed on the bottom portion, the cylinder body upper portion is provided with upper head assembly, the first filter unit and the second filter unit in the cylinder body interior, the first filter unit is located the second filter unit upper portion, the first filter unit includes first lower head assembly, first water inlet pipe, first water distribution assembly, first water outlet pipe, first filter material assembly, first backwash cloth gas assembly and first water collection assembly, the second filter unit includes second lower head assembly, second water inlet pipe, second water distribution assembly, second water outlet pipe, second filter material assembly, second backwash cloth gas assembly and second water collection assembly, the filter provided in the application is simple and reasonable in structure, and convenient to install and use, through reasonable pipeline layout, the upper and lower two processing units can work independently and will not influence each other.

[0003] The above patent document and prior art have the following technical problems:

[0004] 1、Traditional filter adopts single filter screen structure, either focuses on intercepting large particles to cause incomplete filtration of small particles, or focuses on small particle filtration and is easily blocked by large particles.

[0005] 2、The existing filter has single filtering mode and cannot adapt to diversified material requirements, many filters are fixed with filtering mode at the beginning of design, and cannot be flexibly adjusted when facing materials with different impurity content and different filtering accuracy requirements. INVENTION CONTENTS

[0006] The utility model aims at solving the problems of the prior art that the existing filter cannot simultaneously and efficiently filter large particles and small particles, and the filtering mode of the filter is single and has poor adaptability, and provides a high-precision double-layer structure filter.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: A high-precision filtering double-layer structure filter, including straight cylinder filter and sleeve filter, straight cylinder filter top and sleeve filter bottom all are equipped with filter drive assembly, sleeve filter inside is equipped with filter inner chamber and filter outer chamber, straight cylinder filter is located at the filter inner chamber of sleeve filter, the filter inner chamber outer wall of sleeve filter inside is equipped with partition component, straight cylinder filter inside is equipped with first helical baffle and second helical baffle, the inner wall of filter inner chamber is equipped with third helical baffle.

[0008] Preferably, the first helical baffle is located at the center of the straight cylinder filter, the second helical baffle abuts against the inner wall of the straight cylinder filter, and the surface of the straight cylinder filter and the surface of the filter inner chamber are both filter screen structures.

[0009] Preferably, a guide bearing seat is arranged at the center of the inner bottom surface of the filter inner chamber, and the inner ring of the guide bearing shaft is clamped with the bottom surface of the filter inner chamber, and the outer ring of the guide bearing seat is clamped with the outer bottom surface of the straight cylinder filter.

[0010] Preferably, the filter drive assembly includes a motor seat and a drive motor, the drive motor is vertically embedded in the interior of the motor seat, the output shaft of the drive motor is connected with a motor clamping block, the outer surface of the straight cylinder filter and the sleeve filter is circumferentially provided with a connecting clamping groove, and the inner wall of the motor clamping block and the connecting clamping groove are vertically clamped.

[0011] Preferably, the partition component includes a magnetic absorption receiving cylinder and a flexible partition plate, a I-shaped ring groove is formed in the outer wall of the filter inner chamber, the flexible partition plate is slidably clamped in the I-shaped ring groove, the magnetic absorption receiving cylinder is located on the surface of the I-shaped ring groove, one end of the flexible partition plate is wound and received in the inner wall of the magnetic absorption receiving cylinder, the other end of the flexible partition plate is provided with a partition connecting rod, and a partition motor is arranged in the inner bottom surface of the filter outer chamber, and the output shaft of the partition motor is connected with the end of the partition connecting rod.

[0012] Preferably, the end of the motor clamping block close to the motor seat is slidably clamped with the end of the motor seat, and the motor clamping blocks of the straight cylinder filter and the sleeve filter are different in size.

[0013] Preferably, a ring-shaped magnetic cover plate is magnetically connected to the top surface of the filter outer chamber, and the bottom end of the ring-shaped magnetic cover plate is magnetically clamped with the top surface of the sleeve filter.

[0014] Beneficial effects

[0015] This invention employs a double-layer nested rotary filter structure (combining a straight-tube filter and a sleeve filter) to achieve graded centrifugal filtration of fluids. This achieves both efficient interception of large particles to protect the inner fine filter components and deep purification of tiny particles. The outer sleeve filter, with its larger mesh, removes large particles first, preventing them from clogging the inner layer. The inner straight-tube filter, utilizing a fine mesh and internal spiral guide plate, precisely captures tiny impurities during rotation, significantly improving overall filtration accuracy. It is suitable for treating fluids containing complex particle sizes, such as industrial wastewater purification and chemical raw material pretreatment, extending the filter's lifespan under complex operating conditions and reducing the cost of frequent filter replacements.

[0016] This invention employs a partition component to achieve intelligent and precise control of the straight-tube filter filtration process, enabling flexible switching of filtration modes to meet diverse material requirements. Based on material characteristics, the flexible partition plate is driven by an electrically controlled partition motor, allowing the straight-tube filter to be opened or closed as needed. This allows the filter to quickly adjust to either outer coarse filtration only or double-layer fine filtration mode for materials with different impurity contents and filtration requirements, without requiring complex equipment modifications. This improves the filter's versatility and makes it widely applicable in material filtration production lines in various industries such as food, pharmaceuticals, and electronics. It reduces product quality problems caused by mismatched filtration precision, and improves production efficiency and product qualification rate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front sectional view of the present invention;

[0019] Figure 3 This is a top structural diagram of the straight-tube filter of this utility model;

[0020] Figure 4 This is a diagram showing the internal structure of the straight-tube filter of this utility model;

[0021] Figure 5 This is an isometric view of the interior of the straight-tube filter of this utility model;

[0022] Figure 6 For the present utility model Figure 5 Enlarged view of point A;

[0023] Figure 7 This is an exploded structural diagram of the present invention;

[0024] Figure 8 This is a split perspective view of the present invention.

[0025] Legend:

[0026] 1, straight filter; 2, sleeve filter; 3, filter inner cavity; 4, filter outer cavity; 5, annular magnetic cover plate; 6, filter drive assembly; 601, motor base; 602, drive motor; 603, motor clamping block; 604, connecting clamping groove; 7, first spiral guide plate; 8, second spiral guide plate; 9, third spiral guide plate; 10, partition assembly; 1001, magnetic suction receiving cylinder; 1002, flexible partition plate; 1003, partition motor; 1004, partition connecting rod; 1005, I-shaped ring groove; 11, guide bearing seat. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] The specific embodiments of the utility model are described below in combination with the drawings. Embodiment one:

[0030] Reference Figures 1 to 7The utility model provides a high-precision filtering double-layer structure filter, which comprises a straight cylinder filter 1 and a sleeve filter 2, the top end of the straight cylinder filter 1 and the bottom end of the sleeve filter 2 are provided with a filter driving assembly 6, the sleeve filter 2 is internally provided with a filter inner cavity 3 and a filter outer cavity 4, the straight cylinder filter 1 is located at the filter inner cavity 3 of the sleeve filter 2, the outer wall of the filter inner cavity 3 in the sleeve filter 2 is provided with a partition assembly 10, the straight cylinder filter 1 serves as an inner layer core filter component in the double-layer filter structure and undertakes a fine filtering task, cooperates with the sleeve filter 2 to perform deep purification on fluid, the surface of the straight cylinder filter 1 is a filter screen structure, and the fine mesh of the filter screen structure can intercept small particle impurities; when fluid enters the inside of the straight cylinder filter 1, impurities are left on the surface of the filter screen due to the obstruction of the filter screen, the purified fluid further penetrates into the filter, meanwhile, the first spiral flow guide plate 7 and the second spiral flow guide plate 8 are arranged inside, the spiral structure is utilized to make the entering fluid rotate, the centrifugal force is utilized to throw the impurities with a large specific gravity to the inner wall of the straight cylinder filter 1, part of the pollutants is preliminarily separated, the filtering burden of the filter screen is reduced, the fluid is more uniformly contacted with each region of the filter screen, the filtering effect is improved, under the driving of the filter driving assembly 6, the straight cylinder filter 1 rotates around the axis thereof, the rotating movement cooperates with the internal flow guide plate, the centrifugal filtering effect is strengthened, moreover, the straight cylinder filter 1 is clamped with the outer ring of the guide bearing seat 11, so that the straight cylinder filter 1 remains stable during the rotating process and does not deviate, the filtering process is ensured to continuously and stably proceed, through the combination of the fine filter screen, the spiral flow guide plate and the rotating filter, the filtering precision of small particle impurities is greatly improved, and the double-layer structure filter is suitable for scenes with high filtering quality requirements, such as fine chemical industry and pharmaceutical industry.

[0031] The sleeve filter 2 serves as the outer protective and preliminary filtration layer of the double-layer filtration structure, blocking large particulate impurities and protecting the straight-tube filter 1. It also provides structural support and flow channel planning for the entire filtration process. Internally, it has an inner filtration cavity 3 and an outer filtration cavity 4. The outer wall of the inner filtration cavity 3 houses the partition assembly 10, while the outer filtration cavity 4 participates in the flow channel design of the overall filtration process. The surface of the sleeve filter 2 is also a filter screen structure, but its mesh size is larger than that of the straight-tube filter 1. This allows it to intercept large particulate impurities before fluid enters, preventing them from quickly clogging the straight-tube filter 1 and extending the overall filter's service life. It is driven to rotate by the filter drive assembly 6, cooperating with the rotation of the straight-tube filter 1 while remaining relatively independent. The connection between the guide bearing seat 11 and the bottom surface of the filter inner cavity 3 achieves a relatively stable nesting relationship, allowing the fluid to flow reasonably between them and completing the double-layer filtration process. This enables graded filtration of the fluid. The outer layer large-mesh filter initially filters large particles, protecting the inner fine filter components and reducing overall filtration resistance, thus improving filtration efficiency. It is suitable for treating complex fluids containing impurities of various particle sizes, such as water filtration systems with a high content of silt. The filter inner cavity 3 is the key space inside the sleeve filter 2. On the one hand, it accommodates the straight-tube filter 1, providing the inner filtration area for double-layer filtration; on the other hand, it works with the partition component 10 to achieve flexible control of the filtration process. A third spiral guide plate 9 is provided on the inner wall to further optimize the flow pattern of the fluid entering this area and use centrifugal force to assist in impurity separation. A guide bearing seat 11 is set at the center of its bottom surface, forming a nested connection with the bottom of the straight filter 1. This ensures the stable rotation of the straight filter 1 and guides the fluid to transition reasonably between the two. After the fluid is initially filtered by the sleeve filter 2, it enters the filter inner cavity 3. Under the action of the spiral guide plate, impurities are thrown to the inner wall. The purified fluid continues to permeate inward into the straight filter 1. By cooperating with the partition component 10, the fluid can be adjusted as needed to achieve different filtration precision requirements. As an intermediate transition and fine filtration receiving area in the double-layer filtration, it optimizes the fluid flow pattern, improves the overall filtration precision and adaptability, and meets the working conditions of different materials and different filtration requirements. For example, it plays a key role in some material processing processes that require both coarse filtration and selective fine filtration.

[0032] The filter outer cavity 4 participates in the flow channel design in the overall filtering process, carries part of the fluid after preliminary filtering, assists in realizing the meandering flow channel effect, prolongs the residence time of the fluid in the double-layer structure, and provides installation space for some auxiliary components. The inner bottom surface is provided with a partition motor 1003 for driving a partition connecting rod 1004 in the partition assembly 10, thereby controlling the expansion and storage of the flexible partition plate 1002, realizing the sealing or not of the outer wall of the filter inner cavity 3. The top surface is magnetically connected with a ring-shaped magnetic cover plate 5 to ensure the sealing of the cavity and prevent fluid leakage. After the fluid enters the sleeve filter 2, part of the fluid after preliminary filtering enters the filter outer cavity 4, and flows in the cavity according to the preset flow channel, exchanges and cooperatively filters with the fluid in the filter inner cavity 3. Through the control of the partition assembly 10, the working state of the filter inner cavity 3 can be flexibly adjusted, the overall filtering process is optimized, the contact opportunity of the fluid and the filtering material is enhanced through reasonable flow channel design and cooperation of auxiliary components, the filtering effect is improved, and the sealing and stability of the device are ensured. It is suitable for fine chemical industry, pharmaceutical industry and other industries with high requirements on filtering precision and sealing performance.

[0033] The first spiral flow guide plate 7 and the second spiral flow guide plate 8 are arranged in the straight cylinder filter 1, the third spiral flow guide plate 9 is arranged on the inner wall of the filter inner cavity 3, the first spiral flow guide plate 7 is located at the central position in the straight cylinder filter 1, the second spiral flow guide plate 8 abuts against the inner wall of the straight cylinder filter 1, the surfaces of the straight cylinder filter 1 and the filter inner cavity 3 are filter screen structures, and the mesh size of the filter screen on the surface of the straight cylinder filter 1 is larger than that of the filter screen on the surface of the filter inner cavity 3. The first spiral flow guide plate 7 is located at the central position in the straight cylinder filter 1, mainly used for optimizing the flow state of the fluid in the straight cylinder filter 1, and strengthening the centrifugal filtering effect. When the fluid enters the straight cylinder filter 1, the first spiral flow guide plate 7 guides the fluid to flow spirally, so that the fluid generates centrifugal force, and the impurities with relatively large specific gravity are thrown to the inner wall of the straight cylinder filter 1, and adhere to the surface of the inner wall filter screen, so as to avoid that the impurities block the central area of the filter screen too fast, and ensure that the fluid penetrates smoothly. The first spiral flow guide plate 7 cooperates with the rotation of the straight cylinder filter 1, can continuously play the roles of flow guiding and centrifugation whether the filter is static or rotating, improves the uniformity and efficiency of filtering, effectively improves the capturing capacity of the straight cylinder filter 1 for small particle impurities, prevents local blockage, prolongs the service life of the filter screen, ensures the stability of high-precision filtering effect, and has remarkable effect especially when dealing with small particle size and high content impurities.

[0034] The second spiral flow guide plate 8 abuts against the inner wall of the straight cylinder filter 1, assists the first spiral flow guide plate 7, further optimizes the flow state of the fluid in the straight cylinder filter 1, strengthens the centrifugal filtering efficiency, through close adhesion with the inner wall of the straight cylinder filter 1, strengthens the spiral motion of the fluid again when the fluid flows, increases the centrifugal force, promotes the impurities to be thrown to the inner wall more efficiently, at the same time, guides the purified fluid to penetrate uniformly to the center direction of the filter, improves the collection efficiency of the filtered fluid, cooperates with the rotation of the straight cylinder filter 1 and the flow guide of the first spiral flow guide plate 7, forms a multi-dimensional fluid optimization system, improves the filtering effect in all directions, complements the first spiral flow guide plate 7, maximizes the centrifugal filtering advantage, improves the filtering precision, at the same time, ensures the efficient transmission of the fluid in the filter, improves the overall filtering performance, and is suitable for scenes with high requirements for filtering speed and precision.

[0035] The guide bearing seat 11 is arranged at the center position of the inner bottom surface of the filter inner cavity 3, and the inner ring of the guide bearing shaft is clamped with the bottom surface of the filter inner cavity 3, and the outer ring of the guide bearing seat 11 is clamped with the outer bottom surface of the straight cylinder filter 1. The guide bearing seat 11 connects the straight cylinder filter 1 and the sleeve filter 2, ensures that the two maintain a stable and accurate positional relationship during relative rotation, and ensures smooth filtration process. The inner ring is clamped with the bottom surface of the filter inner cavity 3, and the outer ring is clamped with the outer bottom surface of the straight cylinder filter 1. By utilizing the rotation characteristics of the bearing, the straight cylinder filter 1 is allowed to rotate independently in the sleeve filter 2, while bearing certain axial and radial forces, preventing collision and deviation of the two during rotation and vibration. During the entire filtration process, the straight cylinder filter 1 and the sleeve filter 2 are continuously provided with stable support, regardless of the starting and stopping of the driving motor 602, fluid impact and other working condition changes, the relative motion accuracy of the two is always maintained, the reliability and stability of the double-layer filter structure are ensured, the risk of failure caused by component friction and collision is reduced, the service life of the equipment is prolonged, a solid foundation is provided for long-time and high-intensity filtering operation, and the device is widely used in various industrial filtering systems.

[0036] The filter driving assembly 6 comprises a motor base 601 and a driving motor 602, the driving motor 602 is vertically embedded in the inside of the motor base 601, the output shaft of the driving motor 602 is connected with a motor clamping block 603, the outer surface of the straight cylinder filter 1 and the sleeve filter 2 is circumferentially provided with a connecting clamping groove 604, the inner wall of the motor clamping block 603 and the connecting clamping groove 604 are vertically clamped, the end of the motor clamping block 603 close to the motor base 601 is slidingly clamped with the end of the motor base 601, the motor clamping block structure of the surface connection of the straight cylinder filter 1 and the sleeve filter 2 is the same size and different, the filter driving assembly 6 provides rotating power for the straight cylinder filter 1 and the sleeve filter 2, promotes them to perform centrifugal motion in the filtering process, strengthens the filtering effect, comprises a motor base 601 and a driving motor 602, the motor base 601 is used for fixing the driving motor 602, the output shaft of the driving motor 602 is connected with a motor clamping block 603. The inner wall of the motor clamping block 603 and the connecting clamping groove 604 circumferentially provided on the outer surface of the straight cylinder filter 1 and the sleeve filter 2 are vertically clamped, and the rotating power of the motor is transmitted to the filter. At the same time, the end of the motor clamping block 603 close to the motor base 601 is slidingly clamped with the end of the motor base 601, the stability of the connection is guaranteed, and the motor clamping block 603 is prevented from being separated in the running process, when the driving motor 602 starts, the motor clamping block 603 drives the straight cylinder filter 1 or the sleeve filter 2 clamped therewith to rotate around the axis, according to different working condition requirements, the two can be driven alone or simultaneously, a diversified filtering mode is realized, the filter has the active centrifugal filtering capacity, compared with the traditional static filtering, the centrifugal force can be more efficiently utilized to separate impurities, the filtering speed and effect are improved, especially when processing high-flow and high-impurity content fluid, the advantage is obvious, and the filter is widely used in various industrial filtering scenes.

[0037] The partition assembly 10 comprises a magnetic absorption cylinder 1001 and a flexible partition plate 1002. A filter inner cavity 3 is provided with a I-shaped ring groove 1005. The flexible partition plate 1002 is slidably connected in the I-shaped ring groove 1005. The magnetic absorption cylinder 1001 is arranged on the surface of the I-shaped ring groove 1005. One end of the flexible partition plate 1002 is wound and stored in the inner wall of the magnetic absorption cylinder 1001. The other end of the flexible partition plate 1002 is provided with a partition connecting rod 1004. A filter outer cavity 4 is provided with a partition motor 1003 at the bottom. The output shaft of the partition motor 1003 is connected with the end of the partition connecting rod 1004. The partition assembly 10 seals the outer wall of the filter inner cavity 3 and accurately controls the filtering time of the straight cylinder filter 1. The filtering mode can be flexibly switched according to the material characteristics and filtering requirements. The filtering mode comprises the magnetic absorption cylinder 1001 and the flexible partition plate 1002. One end of the flexible partition plate 1002 is wound and stored in the inner wall of the magnetic absorption cylinder 1001. The other end of the flexible partition plate 1002 is connected with the partition connecting rod 1004. The outer wall of the filter inner cavity 3 is provided with the I-shaped ring groove 1005. The flexible partition plate 1002 is slidably connected in the I-shaped ring groove 1005. When the filter inner cavity 3 needs to be closed, the partition motor 1003 drives the partition connecting rod 1004 to pull the flexible partition plate 1002 to extend in the I-shaped ring groove 1005 until the outer wall of the filter inner cavity 3 is completely covered to realize sealing. Conversely, the partition motor 1003 is reversed. The flexible partition plate 1002 is stored back to the magnetic absorption cylinder 1001. According to the working condition judgment of the material composition and impurity content, the state of the flexible partition plate 1002 is adjusted in real time by the electric control partition motor 1003 to determine whether the fluid enters the straight cylinder filter 1 for secondary precision filtration. The universality and intelligent degree of the filter are improved. Different precision filtering strategies can be realized without complex modification for different materials. The use cost and operation difficulty are reduced. The filter production line is suitable for multi-species materials and multi-working condition switching.

[0038] The filter outer cavity 4 is provided with a ring-shaped magnetic cover plate 5 at the top. The ring-shaped magnetic cover plate 5 is magnetically connected with the sleeve filter 2 at the top. The ring-shaped magnetic cover plate 5 magnetically seals the top of the filter outer cavity 4 to prevent fluid leakage. The filter process is carried out in a closed environment. The ring-shaped magnetic cover plate 5 is tightly attached to the top of the filter outer cavity 4 by the magnetic attraction between the magnetic material and the top of the sleeve filter 2 to form a reliable sealing barrier. When it is necessary to open the equipment for maintenance, cleaning and other operations, the ring-shaped magnetic cover plate 5 can be removed by overcoming the magnetic attraction. During normal filtering operation, the ring-shaped magnetic cover plate 5 always maintains a sealing state. The ring-shaped magnetic cover plate 5 cooperates with the overall structure of the filter outer cavity 4 to ensure the sealing performance of the internal flow channel and maintain the preset fluid pressure, flow rate and other parameters. The sealing problem of the filter outer cavity 4 is solved simply and efficiently. The material loss and environmental pollution caused by fluid leakage are avoided. The safety and stability of the equipment are improved. The filter is especially suitable for filtering scenes of toxic, harmful or high-value fluids. Specific embodiment two:

[0040] Reference Figures 1 to 7According to the above specific embodiments, the following is further disclosed:

[0041] The following is the filtering requirement for different scenarios, the working mode of each component of the above filter:

[0042] Water filtering scene with more silt:

[0043] Straight cylinder filter 1 and sleeve filter 2: straight cylinder filter 1 is located at the filtering inner cavity 3 of sleeve filter 2, and the two are nested with each other. The sleeve filter 2 first uses its larger mesh filter to preliminarily filter the water containing silt, and intercepts larger particle silt and other impurities. The straight cylinder filter 1 uses its more fine mesh filter to perform secondary fine filtering on the water after preliminary filtering, and further removes fine impurities in the water.

[0044] First, second and third spiral guide plates: the first spiral guide plate 7 and the second spiral guide plate 8 inside the straight cylinder filter 1 and the third spiral guide plate 9 on the inner wall of the filtering inner cavity 3 make the entering water flow rotate. Under the action of centrifugal force, silt and other impurities with higher specific gravity are thrown to the outer wall, pre-separating part of the pollutants and reducing the burden of double-layer filtering, while making the water flow more evenly distributed to the inner layer filtering layer, avoiding local blockage.

[0045] Filter driving assembly 6: the filter driving assembly 6 includes a motor base 601 and a driving motor 602, and the driving motor 602 is vertically clamped with the connecting clamping groove 604 on the outer surface of the straight cylinder filter 1 and the sleeve filter 2 through the motor clamping block 603, respectively driving the straight cylinder filter 1 and the sleeve filter 2 to rotate, enhancing the centrifugal filtering effect.

[0046] Guide bearing seat 11: the guide bearing seat 11 is located at the center position of the inner bottom surface of the filtering inner cavity 3, the inner ring of which is clamped with the bottom surface of the filtering inner cavity 3, and the outer ring is clamped with the outer bottom surface of the straight cylinder filter 1, which is used to connect the straight cylinder filter 1 and the sleeve filter 2, so that the two can keep relatively independent and not interfere with each other during rotation and centrifugal filtering.

[0047] Fine chemical and pharmaceutical industry filtering scene:

[0048] Straight cylinder filter 1 and sleeve filter 2: also use double-layer nested structure for grading filtering. The sleeve filter 2 performs rough filtering to intercept larger impurity particles and prevent them from entering the straight cylinder filter 1 to cause blockage, providing protection for the fine filtering of the straight cylinder filter 1. The straight cylinder filter 1 performs high-precision filtering to ensure that the filtered material meets the high standard requirements of the fine chemical and pharmaceutical industry.

[0049] The first, second and third spiral guide plates: the spiral guide plates make the fluid rotate, so that the impurities in the fluid are more evenly distributed under the action of centrifugal force and fully contact the filter screen, thereby improving the filtering effect. At the same time, the flow path and speed of the fluid in the filter are controlled, so that the fluid passes through the filter layer more orderly, avoiding the occurrence of short circuit or local high flow rate, and ensuring the stability and consistency of the filtration.

[0050] The partition assembly 10: according to the filtering requirements of the material, the filtering mode can be adjusted through the partition assembly 10. If the material only needs to be preliminarily filtered, the flexible partition plate 1002 can be driven by the partition motor 1003 to be pulled out of the magnetic suction cylinder 1001, so as to seal the outer wall of the filtering inner cavity 3, and only the material is filtered in the sleeve filter 2 without passing through the straight cylinder filter 1, thereby improving the filtering efficiency. If high-precision filtering is required, the flexible partition plate 1002 is retracted, and the material passes through the sleeve filter 2 and the straight cylinder filter 1 in sequence for double-layer filtering.

[0051] The filtering outer cavity 4 and the annular magnetic cover plate 5: the filtering outer cavity 4 can accommodate the material filtered by the sleeve filter 2, the annular magnetic cover plate 5 is magnetically attracted and clamped with the top surface of the sleeve filter 2, and plays a sealing and protection role to prevent external impurities from entering, and facilitates cleaning and maintenance of the filtering outer cavity 4.

[0052] In summary:

[0053] 1. The double-layer nested rotary filtering structure is adopted, the straight cylinder filter 1 cooperates with the sleeve filter 2 to realize the function of fractional centrifugal filtration of the fluid, to achieve the effect of both high-efficiency interception of large-particle impurities to protect the fine filtering components in the inner layer and deep purification of small-particle impurities, the outer sleeve filter 2 removes large particles in advance by virtue of the larger mesh filter screen to prevent the inner layer from being blocked, and the inner straight cylinder filter 1 accurately captures small impurities by means of the fine filter screen and the internal spiral guide plate in the rotating state, thereby greatly improving the overall filtering precision, being suitable for processing fluid containing complex particle size impurities, such as industrial wastewater purification, chemical raw material pretreatment, etc., prolonging the service life of the filter under complex working conditions, and reducing the cost of frequent replacement of filter elements;

[0054] 2. The partition assembly 10 is adopted to realize the intelligent and precise control function of the filtering process of the straight cylinder filter 1, to achieve the effect of flexible switching of the filtering mode and meeting the diversified material requirements, according to the characteristics of the material, the flexible partition plate 1002 is driven by the electric control partition motor 1003, the straight cylinder filter 1 can be closed or opened as needed, the filter can be quickly adjusted to be only outer coarse filtering or double-layer fine filtering mode for different impurity content and different filtering requirement materials, without complex equipment modification, thereby improving the universality of the filter, widely applied to food, pharmaceutical, electronic and other industries, reducing the product quality problems caused by mismatching of filtering precision, and improving the production efficiency and product qualification rate.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include the first and second features directly contact, but also can include the first and second features are not directly contact but through the other features between them contact. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates the first feature horizontal height is higher than the second feature. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates the first feature horizontal height is less than the second feature.

[0056] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-precision dual-layer filter, comprising a cylindrical filter (1) and a sleeve filter (2), characterized in that: The top of the straight filter (1) and the bottom of the sleeve filter (2) are both provided with filter drive components (6). The sleeve filter (2) is provided with an inner filter cavity (3) and an outer filter cavity (4). The straight filter (1) is located in the inner filter cavity (3) of the sleeve filter (2). The outer wall of the inner filter cavity (3) inside the sleeve filter (2) is provided with a partition component (10). The straight filter (1) is provided with a first spiral guide plate (7) and a second spiral guide plate (8). The inner wall of the inner filter cavity (3) is provided with a third spiral guide plate (9).

2. The dual-layer structure filter for high-precision filtration according to claim 1, characterized in that: The first spiral guide plate (7) is located at the center of the inside of the straight filter (1), and the second spiral guide plate (8) abuts against the inner wall of the straight filter (1). The surface of the straight filter (1) and the surface of the filter cavity (3) are both filter screen structures.

3. The dual-layer structure filter for high-precision filtration according to claim 1, characterized in that: The filter cavity (3) is provided with a guide bearing seat (11) at the center of the bottom surface, and the bottom surface of the filter cavity (3) is engaged with the inner ring of the guide bearing shaft, and the outer bottom surface of the straight filter (1) is engaged with the outer ring of the guide bearing seat (11).

4. The dual-layer structure filter for high-precision filtration according to claim 1, characterized in that: The filter drive assembly (6) includes a motor base (601) and a drive motor (602). The drive motor (602) is vertically embedded inside the motor base (601). The output shaft of the drive motor (602) is connected to a motor locking block (603). The outer surfaces of the cylindrical filter (1) and the sleeve filter (2) are both circumferentially provided with connecting slots (604). The inner wall of the motor locking block (603) and the connecting slots (604) are vertically engaged.

5. A high-precision dual-layer filter according to claim 1, characterized in that: The partition assembly (10) includes a magnetic absorption cylinder (1001) and a flexible partition plate (1002). The outer wall of the filter inner cavity (3) is provided with an I-shaped annular groove (1005). The flexible partition plate (1002) is slidably engaged inside the I-shaped annular groove (1005). The magnetic absorption cylinder (1001) is located on the surface of the I-shaped annular groove (1005). One end of the flexible partition plate (1002) is wrapped and stored in the inner wall of the magnetic absorption cylinder (1001). The bottom end of the other end of the flexible partition plate (1002) is provided with a partition connecting rod (1004). The bottom surface inside the filter outer cavity (4) is provided with a partition motor (1003). The output shaft of the partition motor (1003) is connected to the end of the partition connecting rod (1004).

6. A high-precision dual-layer filter according to claim 4, characterized in that: The motor clamp (603) is slidably engaged with the end of the motor base (601) near the motor base (601). The motor clamps connected to the surfaces of the straight filter (1) and the sleeve filter (2) have the same structure but different sizes.

7. A high-precision dual-layer filter according to claim 1, characterized in that: The top surface of the filter outer cavity (4) is magnetically connected to an annular magnetic cover plate (5), and the bottom end of the annular magnetic cover plate (5) is magnetically engaged with the top surface of the sleeve filter (2).

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