Filter top cover locking mechanism

Abstract

The utility model relates to the technical field of filters, and discloses a top cover locking mechanism of a filter. Comprising a first arc-shaped buckling arm, a second arc-shaped buckling arm and a screw rod, the first arc-shaped buckling arm is hinged to the second arc-shaped buckling arm, a left nut is fixedly arranged at the free end of the first arc-shaped buckling arm, a right nut is fixedly arranged at the free end of the second arc-shaped buckling arm, a first thread area is arranged at the left end of the screw rod, and a second thread area is arranged at the right end of the screw rod. The screw penetrates through the left nut to enable the left nut to be in threaded connection with the first threaded area, the screw penetrates through the right nut to enable the right nut to be in threaded connection with the second threaded area, and the thread turning direction of the first threaded area is opposite to that of the second threaded area. The filter top cover locking device overcomes the defects of a traditional filter top cover locking mode, achieves rapid, convenient and reliable top cover locking operation, ensures that the filter can maintain good sealing performance under different working conditions, improves the overall use efficiency of the filter, and reduces the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a filter top cover locking mechanism. Background Technology

[0002] In industrial production and various fluid handling fields, such as petrochemicals, pharmaceuticals, food and beverage processing, and water treatment, filters play a crucial role. They effectively remove impurities from fluids, ensuring the purity of fluids that come into contact with subsequent equipment or processes, thereby maintaining the stable operation of the entire system. However, as industries continue to move towards refinement and automation, the performance and ease of operation of filters themselves face many challenges.

[0003] The sealing and locking performance of the filter top cover is a critical factor. On the one hand, if the top cover is not tightly sealed, impurities in the fluid can easily seep in or out through gaps, greatly weakening the filtration effect and even causing the entire filtration process to fail, posing a serious risk of damage to downstream equipment. For example, in the ultrapure water filtration process of precision electronic chip manufacturing, even the slightest leakage of impurities can cause a short circuit and render the chip unusable, resulting in huge economic losses. On the other hand, in scenarios where filter cartridges need to be replaced frequently or equipment maintenance is required, the traditional opening and closing operation of the top cover is cumbersome and complex. For example, in large wastewater treatment plants where filters are maintained multiple times a day, if the common bolt and nut method is used to fasten the top cover, tools must be used to tighten each bolt, which is both time-consuming and labor-intensive, seriously affecting production efficiency. Even if some small filters use a simple snap-fit ​​structure, although the operation is relatively convenient, the snap-fit ​​locking force is limited. Under high-pressure conditions or long-term vibration environments, the top cover is prone to loosening, making it impossible to ensure a stable sealing state in the long term. Therefore, the development of innovative filter top cover locking mechanisms is imperative. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a filter top cover locking mechanism. This invention overcomes the shortcomings of traditional filter top cover locking methods, achieving fast, convenient, and reliable top cover locking operation. It ensures that the filter maintains good sealing performance under different operating conditions, improves the overall efficiency of the filter, and reduces maintenance costs.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] A filter top cover locking mechanism includes a first arc-shaped latching arm, a second arc-shaped latching arm, and a screw. The first arc-shaped latching arm is hinged to the second arc-shaped latching arm. A left nut is fixed to the free end of the first arc-shaped latching arm, and a right nut is fixed to the free end of the second arc-shaped latching arm. The left end of the screw has a first threaded area, and the right end of the screw has a second threaded area. The screw passes through the left nut to screw the left nut into the first threaded area, and the screw passes through the right nut to screw the right nut into the second threaded area. The threads of the first threaded area and the second threaded area have opposite directions of rotation.

[0007] The first and second arc-shaped locking arms are hinged together, and together with the screw and the opposite threaded areas at both ends, a clever mechanical linkage structure is constructed. When the screw is rotated, because the threads rotate in opposite directions, the left and right nuts will drive the corresponding arc-shaped locking arms to perform relative opening and closing movements. This structure abandons the traditional single locking method of filter top covers, eliminating the need for complex tools to operate multiple parts one by one. The top cover can be quickly locked and loosened simply by rotating the screw, which greatly improves operational efficiency. Especially in industrial scenarios where frequent filter maintenance is required, it can effectively save manpower and time costs. At the same time, the hinged locking arms can adapt to filter top covers of different sizes, enhancing the versatility of the locking mechanism and reducing the equipment compatibility problems caused by the variety of filter models.

[0008] Preferably, the left nut is rotatably connected to the free end of the first arc-shaped buckle arm, and the right nut is rotatably connected to the free end of the second arc-shaped buckle arm.

[0009] The left nut and the free end of the first arc-shaped latching arm, and the right nut and the free end of the second arc-shaped latching arm, form a rotatable connection. This design allows the nut to flexibly and adaptively adjust its angle during screw rotation. This avoids jamming caused by rigid constraints between the latching arms and the screw, ensuring smooth operation. When actually locking or unlocking the filter cover, regardless of changes in the screw's rotation speed or direction, the nut can adjust its posture in real time, ensuring even force distribution on the arc-shaped latching arms and smoothly completing the opening and closing action. This further guarantees the reliability of the entire locking mechanism and reduces the risk of equipment downtime due to mechanical failure.

[0010] Preferably, the left nut is externally fixed with a left connecting portion, which is rotatably connected to the free end of the first arc-shaped buckle arm. This rotatable connection between the left connecting portion of the left nut and the free end of the first arc-shaped buckle arm enhances the connection stability between the left nut and the buckle arm.

[0011] Preferably, the left connecting part is an L-shaped structure with an arc-shaped bottom, and the left nut is fixed inside the arc-shaped bottom structure of the left connecting part.

[0012] The left connecting part adopts an L-shaped structure with an arc-shaped bottom, and the left nut is fixed to the inner side of the arc at the bottom, further optimizing the connection performance with the first arc-shaped latch arm. The arc-shaped bottom fits the arc-shaped surface of the latch arm, increasing the contact area and making the connection tighter and more stable. This effectively disperses the stress transmitted from the nut to the latch arm during operation, reducing the risk of damage due to excessive local stress on the latch arm. At the same time, the vertical part of the L-shaped structure can limit the nut in the vertical direction, preventing the nut from dislodging from its normal working position under axial force, ensuring that the entire locking mechanism can operate continuously and stably under various working conditions, maintaining the sealing state of the filter top cover.

[0013] Preferably, the right nut is externally fixedly wrapped with a right connecting part, which forms a rotatable connection with the free end of the second arc-shaped buckle arm.

[0014] A right connecting part is provided on the outside of the right nut, forming a rotatable connection with the free end of the second arc-shaped latching arm. Similar to the left connecting part, its function is to enhance the reliability of the connection between the right nut and the corresponding latching arm. The structural design of the right connecting part ensures that when the screw rotates and drives the right nut to move, the nut can stably drive the second arc-shaped latching arm to open and close, without causing problems such as lag or incoordination in the latching arm movement due to loose connection. Under high-pressure conditions, the filter top cover is subjected to a large outward pressure. At this time, the right connecting part can ensure that the right nut tightly holds the latching arm, keeping the latching arm in a state of holding the top cover tightly, preventing the top cover from leaking, and ensuring the safe operation of the filtration system.

[0015] Preferably, the right connecting part is an L-shaped structure with an arc-shaped bottom, and the right nut is fixed inside the arc-shaped bottom structure of the right connecting part.

[0016] The right connector features an L-shaped structure with an arc-shaped bottom, and the right nut is fixed inside this arc-shaped structure. This design complements the advantages of the left connector. The arc-shaped bottom conforms to the arc-shaped contour of the latch arm, providing a stable support base. This allows the right nut to accurately convert the rotational motion of the screw into the opening and closing action of the latch arm, improving the precision of the mechanical transmission. The L-shaped structure also plays a crucial role in limiting the position of the right nut, preventing it from shifting or falling off under complex stress environments. This maintains the integrity of the entire locking mechanism and ensures that the filter top cover remains reliably locked, even in prolonged vibration environments, extending the filter's maintenance cycle.

[0017] Preferably, the left end of the screw is provided with a rotating handwheel.

[0018] A rotating handwheel at the left end of the screw greatly improves operator convenience. Operators no longer need wrenches or other additional tools to turn the screw; they can easily rotate it by simply holding the handwheel. In routine filter maintenance scenarios, such as frequent filter cartridge replacements, operators can quickly and smoothly open and close the top cover, significantly reducing operational steps and labor intensity. Furthermore, the rotating handwheel design makes operation more intuitive and precise, allowing operators to better control the screw's rotation amplitude and thus accurately control the opening and closing degree of the arc-shaped locking arm, ensuring the filter top cover is always properly locked, improving the overall efficiency of the filter.

[0019] This utility model has the following beneficial effects:

[0020] (1) Compared with the traditional bolt and nut fastening method, the present invention uses a screw with opposite thread area and a hinged arc-shaped buckle arm to quickly lock and loosen the top cover by rotating the screw. There is no need to tighten multiple bolts one by one. The operation is simple and quick, and the filter maintenance time is greatly shortened.

[0021] (2) Under high pressure or long-term vibration conditions, the arc-shaped buckle arm can provide a stable and uniform clamping force. In addition, the flexible rotation connection between the nut and the buckle arm can ensure a smooth and unbiased locking process, effectively preventing the top cover from loosening, ensuring a long-term stable sealing state, and guaranteeing the filtration effect.

[0022] (3) The hinged first and second arc-shaped buckle arms can be flexibly adjusted to open and close, and can be adapted to filter top covers of different specifications and sizes. They have good versatility and reduce the complexity of equipment maintenance caused by the variety of filter models. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0024] Attached Figure

[0025] The components include a first arc-shaped latch arm 100, a second arc-shaped latch arm 200, a screw 300, a left nut 101, a right nut 201, a first threaded area 301, a second threaded area 302, a left connecting part 102, a right connecting part 202, and a rotating handwheel 303. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 This is a schematic diagram of the structure of this utility model. A filter top cover locking mechanism includes a first arc-shaped latching arm 100, a second arc-shaped latching arm 200, and a screw 300. The first and second arc-shaped latching arms are hinged together. A left nut 101 is fixed to the free end of the first arc-shaped latching arm, and a right nut 201 is fixed to the free end of the second arc-shaped latching arm. The left end of the screw has a first threaded area 301, and the right end of the screw has a second threaded area 302. The screw passes through the left nut, causing the left nut to be screwed into the first threaded area, and the screw passes through the right nut, causing the right nut to be screwed into the second threaded area. The threads of the first and second threaded areas have opposite directions of rotation. Specifically, the hinged first and second arc-shaped latching arms, combined with the screw and the design of the opposite threaded areas at both ends, create a clever mechanical linkage structure. When the screw is rotated, due to the opposite directions of rotation of the threads, the left and right nuts will drive the corresponding arc-shaped latching arms to perform relative opening and closing movements. This structure abandons the traditional single locking method for filter top covers. It eliminates the need for complex tools to operate multiple components individually; simply rotating the screw allows for quick locking and unlocking of the top cover, significantly improving operational efficiency. This is especially beneficial in industrial settings requiring frequent filter maintenance, effectively saving manpower and time costs. Furthermore, the hinged locking arm adapts to filter top covers of different sizes, enhancing the versatility of the locking mechanism and reducing equipment compatibility challenges arising from diverse filter models.

[0028] Furthermore, the left nut is rotatably connected to the free end of the first arc-shaped latching arm, and the right nut is rotatably connected to the free end of the second arc-shaped latching arm. Specifically, the left nut and the free end of the first arc-shaped latching arm, and the right nut and the free end of the second arc-shaped latching arm, are rotatably connected. This design allows the nut to flexibly and adaptively adjust its angle during screw rotation. This avoids jamming caused by rigid constraints between the latching arm and the screw, ensuring smooth operation. When actually locking or unlocking the filter top cover, regardless of changes in the screw's rotation speed or direction, the nut can adjust its posture in real time, ensuring even force distribution on the arc-shaped latching arm and smoothly completing the opening and closing action. This further ensures the reliability of the entire locking mechanism and reduces the risk of equipment downtime due to mechanical failure.

[0029] Furthermore, the left nut is externally fixedly wrapped with a left connecting part 102, which forms a rotatable connection with the free end of the first arc-shaped buckle arm. The left connecting part is an L-shaped structure with an arc-shaped bottom, and the left nut is fixedly disposed on the inner side of the bottom arc-shaped structure of the left connecting part. Specifically, the left connecting part adopts an L-shaped structure with an arc-shaped bottom and the left nut is fixed on the inner side of its bottom arc, which further optimizes the connection performance with the first arc-shaped buckle arm. The arc-shaped bottom fits with the arc-shaped surface of the buckle arm, increasing the contact area and making the connection tighter and more stable. This effectively disperses the stress transmitted by the nut to the buckle arm during operation and reduces the risk of damage due to excessive local stress on the buckle arm. At the same time, the vertical part of the L-shaped structure can limit the nut in the vertical direction, preventing the nut from dislodging from its normal working position under axial force, ensuring that the entire locking mechanism can operate continuously and stably under various working conditions and maintain the sealing state of the filter top cover.

[0030] Furthermore, the right nut is externally fixedly wrapped with a right connecting part 202, which forms a rotatable connection with the free end of the second arc-shaped buckle arm. The right connecting part is an L-shaped structure with an arc-shaped bottom, and the right nut is fixed inside the arc-shaped bottom structure of the right connecting part. Specifically, the right connecting part is an L-shaped structure with an arc-shaped bottom, and the right nut is fixed inside its arc-shaped bottom structure. This design complements the advantages of the left connecting part. The arc-shaped bottom fits the arc-shaped contour of the buckle arm, providing a stable support base, allowing the right nut to accurately convert the rotational motion of the screw into the opening and closing action of the buckle arm, improving the accuracy of mechanical transmission. The L-shaped structure also plays an important role in limiting the right nut, preventing the nut from shifting or falling off under complex stress environments, maintaining the integrity of the entire locking mechanism, and ensuring that the filter top cover is always in a reliable locked state even in long-term vibration environments, extending the filter's maintenance cycle.

[0031] Furthermore, a rotating handwheel 303 is provided at the left end of the screw. Specifically, the rotating handwheel at the left end of the screw greatly improves the operator's ease of operation. The operator no longer needs to use additional tools such as wrenches to turn the screw; they can easily apply force to rotate the screw simply by holding the rotating handwheel. In routine filter maintenance scenarios, such as frequent filter element replacement, the operator can quickly and smoothly complete the opening and closing of the top cover, significantly reducing operational steps and labor intensity. Moreover, the rotating handwheel design makes operation more intuitive and precise, allowing the operator to better control the rotation amplitude of the screw, thereby precisely controlling the opening and closing degree of the arc-shaped latch arm, ensuring that the filter top cover is locked just right every time, improving the overall efficiency of the filter.

[0032] The working principle of the filter top cover locking mechanism of this utility model is as follows: When it is necessary to install and lock the filter top cover, the operator first opens the first and second arc-shaped latching arms, allowing them to wrap around the outer circumference of the filter top cover at a suitable position, ensuring that the latching arms fit tightly against the top cover. Then, the operator holds the rotating handwheel at the left end of the screw and rotates the screw clockwise. Since the first threaded area at the left end of the screw is screwed to the left nut at the free end of the first arc-shaped latching arm, and the second threaded area at the right end is screwed to the right nut at the free end of the second arc-shaped latching arm, and the two threaded areas rotate in opposite directions, as the screw rotates, the left and right nuts will gradually approach each other, causing the first and second arc-shaped latching arms to rotate in opposite directions, thus gripping the filter top cover. During this process, the rotational connection between the left and right connecting parts outside the left and right nuts and the corresponding free ends of the latching arms ensures that the nuts can flexibly adjust their angles, making the latching arms evenly stressed and smoothly completing the locking action. When it is necessary to open the filter top cover for filter element replacement or equipment maintenance, simply turn the rotating handwheel counterclockwise. The screw drives the left and right nuts to move in opposite directions, and the first and second arc-shaped latches open accordingly, making it easy to remove the top cover. The entire operation is quick and labor-saving, greatly improving the maintenance efficiency of the filter and providing reliable protection for fluid handling in industrial production.

[0033] The above description is merely a preferred embodiment of this utility model and should not be construed as limiting the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of this utility model patent and the description should still fall within the scope of this utility model.

Claims

1. A filter head locking mechanism, characterized by, The utility model relates to a kind of arc buckle arm, including first arc buckle arm (100), second arc buckle arm (200) and screw rod (300), the first arc buckle arm is hinged with second arc buckle arm, the free end of the first arc buckle arm is fixed with left nut (101), the free end of the second arc buckle arm is fixed with right nut (201), the left end of the screw rod is equipped with first threaded area (301), the right end of the screw rod is equipped with second threaded area (302), the screw rod passes through left nut makes left nut with first threaded area screw joint, the screw rod passes through right nut makes right nut with second threaded area screw joint, and the first threaded area and second threaded area are opposite in screw thread rotation direction.

2. A filter head locking mechanism according to claim 1, wherein The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm.

3. A filter top locking mechanism according to claim 2, wherein The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm.

4. The filter top locking mechanism of claim 3, wherein, The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm.

5. The filter top locking mechanism of claim 2, wherein, The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm.

6. A filter top locking mechanism according to claim 5, wherein The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm.

7. The filter top locking mechanism of claim 1, wherein, The left nut is rotatably connected to the free end of the first arc buckle arm, and the right nut is rotatably connected to the free end of the second arc buckle arm. The left end of the screw rod is provided with a rotating hand wheel (303).

Images