A new type of multi-purpose filter bag compression mechanism

Abstract

The utility model relates to a novel multipurpose filter bag compression mechanism, it includes: compression frame, the compression frame is by upper ring and lower ring and is connected between a plurality of support round steel and constitutes, a plurality of spring fixed base, spring fixed base fixed connection on upper ring, a plurality of compression springs, each compression spring is correspondingly set on spring fixed base, compression cap, sets up at the top end of compression spring, the utility model has the effect that the resilience is excellent, and the sealing is durable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a novel multi-purpose filter bag pressing mechanism. Background Technology

[0002] Bag filters are key equipment for liquid filtration and purification in the industrial field. The core of their operation lies in the reliable seal between the filter bag and the internal support mesh of the equipment. If the seal is not tight, it will lead to media short circuit, filtration failure, and product contamination.

[0003] Currently, the filter bag clamping mechanisms widely used in the industry are mostly simple hard-press types, typically consisting of a clamping ring and an arc-shaped steel strip welded together to form a slightly elastic clamping structure. These traditional devices have inherent defects: their structure has low elasticity, and their rebound performance after clamping is significantly insufficient. After one or more cycles of opening and replacing the filter bag, the clamping ring cannot effectively return to its initial clamping state due to plastic deformation, easily resulting in the filter bag not being clamped tightly. This defect directly leads to gaps forming between the filter bag and the support mesh, preventing a complete seal and causing unfiltered media to leak directly from the gaps, severely affecting the pass rate of the filtered products and the reliability of the system operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of multi-purpose filter bag pressing mechanism, which has excellent resilience and reliable and long-lasting sealing effect.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A novel multi-purpose filter bag pressing mechanism includes: a pressing frame, which is composed of an upper ring and a lower ring and a plurality of supporting round steel bars connected between the two;

[0007] Multiple spring retainers are fixedly connected to the upper ring;

[0008] Multiple compression springs, each of which is correspondingly sleeved on the spring fixing seat;

[0009] A pressure cap is located at the top of the pressure spring.

[0010] Through the above technical solution, an independent mechanism with elastic clamping function was constructed. This mechanism provides continuous rebound force through a clamping spring, solving the problem of clamping force attenuation caused by the lack of elasticity in traditional hard-press mechanisms, and ensuring that the filter bag can still be reliably clamped after multiple uses.

[0011] As a further technical solution of this utility model: multiple spring fixing seats are evenly distributed along the circumferential direction of the upper ring.

[0012] The above technical solution allows multiple compression springs to be evenly arranged along the circumference, thereby uniformly transmitting the compression force to the entire circumference of the filter bag opening, avoiding localized poor sealing, and significantly improving the overall sealing reliability and filtration stability of the filtration system.

[0013] As a further technical solution of this utility model: the pressing cover has a stepped structure, which includes a large end and a small end arranged coaxially;

[0014] The outer diameter of the larger end is larger than the outer diameter of the compression spring;

[0015] The small end is inserted into the inner hole of the compression spring.

[0016] The above technical solution uses a stepped pressure cap, which restricts the position of the spring at its large end and positions the small end in the inner hole of the spring, to achieve automatic alignment and reliable connection between the pressure cap and the spring, ensuring that the force is vertical and uniform during the pressing process and preventing the mechanism from tilting.

[0017] As a further technical solution of this utility model: the two ends of the supporting round steel are welded and fixed to the lower surface of the upper ring and the upper surface of the lower ring, respectively.

[0018] The above technical solution involves welding and fixing the two ends of the supporting round steel to the surfaces of the upper and lower rings respectively, forming a high-strength overall frame. This ensures that the clamping frame maintains structural integrity and dimensional stability when subjected to spring pressure and working load for a long time, effectively extending the service life of the mechanism.

[0019] In summary, this utility model has at least one of the following beneficial technical effects:

[0020] 1. This utility model discloses a novel multi-purpose filter bag pressing mechanism, which achieves continuous and stable automatic pressing of the filter bag by setting an elastic pressing system composed of pressing springs, effectively solving the problems of pressing force attenuation and media leakage caused by plastic deformation or springback failure of traditional rigid pressing mechanisms.

[0021] 2. This utility model discloses a novel multi-purpose filter bag pressing mechanism, which achieves automatic centering and reliable connection of the pressing components by adopting a stepped pressing cover and pressing spring cooperation structure, ensuring that the pressing force is transmitted vertically and evenly, preventing the mechanism from tilting during the pressing process, and improving the reliability of the pressing and sealing.

[0022] 3. This utility model provides a novel multi-purpose filter bag pressing mechanism, which distributes multiple spring fixing seats evenly along the circumference, so that the pressing force is evenly applied to the entire circumference of the filter bag opening, avoiding local stress concentration that leads to poor sealing, and significantly improving the overall sealing effect and stability of the filtration system. Attached Figure Description

[0023] Figure 1 This is a side view of a novel multi-purpose filter bag pressing mechanism according to this utility model.

[0024] Figure 2 This is a schematic diagram of the installation of a novel multi-purpose filter bag pressing mechanism on the cylinder body according to this utility model.

[0025] Figure 3 This is a top view of a novel multi-purpose filter bag pressing mechanism according to this utility model.

[0026] Figure 4 for Figure 1 Enlarged view of the medium-pressure tight cover.

[0027] Reference numerals in the attached drawings: 1. Cylinder body; 2. Support mesh; 3. Filter bag; 4. Top cover; 5. Connecting nut; 6. Connecting bolt; 7. Pressure cover; 8. Pressure spring; 9. Spring fixing seat; 10. Upper ring; 11. Supporting round steel; 12. Lower ring. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Example 1:

[0032] Reference Figure 1 This utility model discloses a novel multi-purpose filter bag pressing mechanism, which includes a pressing frame. The pressing frame is welded together from an upper ring 10, a lower ring 12, and supporting round steel 11 connected between the two. The number of supporting round steel 11 can be flexibly adjusted according to the diameter of the upper ring 10 and the lower ring 12. For example, 3 steel 11 can be set when the ring diameter is small, and 6 steel 11 can be set when the diameter is large.

[0033] Reference Figure 1 Four spring fixing seats 9 are welded to the upper ring 10 of the clamping frame, and a corresponding clamping spring 8 is fitted on each spring fixing seat 9. The height of the supporting round steel 11 and the free height of the clamping spring 8 are configured so that when the clamping mechanism is installed on the filter bag 3 ring and the equipment cover 4 is closed and fixed, the clamping spring 8 is in a compressed state and generates a predetermined clamping force.

[0034] Reference Figure 1 A pressure cap 7 is provided at the force-bearing end of each pressure spring 8 to form a uniform pressure transmission surface; the elastic deformation of the pressure spring 8 provides a continuous rebound force, which solves the problem of pressure force attenuation in traditional hard-press mechanism and ensures that the filter bag 3 can still be reliably pressed after multiple uses.

[0035] Reference Figure 1 and Figure 3 Four spring-loaded fixing seats 9 are evenly distributed along the circumference of the upper ring 10, transmitting the clamping force evenly to the entire circumference of the filter bag 3 opening via the lower ring 12. This prevents inadequate sealing due to insufficient local pressure, significantly improving the overall sealing reliability and filtration stability of the filtration system. (Refer to...) Figure 4 Meanwhile, the clamping cover 7 adopts a stepped structure, including a large end 71 and a small end 72 coaxially arranged. The outer diameter of the large end 71 is larger than the outer diameter of the clamping spring 8, and the small end 72 is inserted into the inner hole of the clamping spring 8. Through this stepped structure, the large end 71 can limit the radial displacement of the clamping spring 8 during compression or rebound, while the small end 72 is precisely positioned in the inner hole of the clamping spring 8. This achieves automatic alignment and reliable connection between the clamping cover 7 and the clamping spring 8, ensuring that the force is always vertical and uniform during the clamping process, and preventing the clamping effect from being affected by the mechanism's skewness.

[0036] To enhance the stability of the mechanism, the two ends of the supporting round steel 11 are welded and fixed to the lower surface of the upper ring 10 and the upper surface of the lower ring 12, preventing loosening under long-term stress. This creates a high-strength integral frame for the clamping frame, maintaining structural integrity and stability when subjected to the pressure of the clamping spring 8 and equipment load, thus extending its service life. Simultaneously, the diameters of the upper ring 10 and lower ring 12, as well as the number of supporting round steel 11, spring fixing seats 9, and clamping springs 8, can be adjusted to accommodate bag filters of different specifications, meeting the needs of chemical, water treatment, and food processing industries, reflecting its "multi-purpose" positioning.

[0037] To adapt to different working environments, the metal components of this mechanism, such as the clamping frame (including the upper ring 10, lower ring 12, and supporting round steel 11), spring fixing seat 9, and clamping cover 7, can undergo targeted surface treatments according to the application scenario. For example, in chemically corrosive media environments, epoxy resin spraying or electroplating with zinc-nickel alloy can be used for corrosion protection; for food and pharmaceutical applications with high hygiene requirements, relevant components can be made of stainless steel and have their surfaces polished; and in severely abrasive working conditions, a wear-resistant coating can be applied. Through these material selections and surface treatment methods, this mechanism can be reliably used in both general-purpose and special-purpose machines, thus broadening its application range.

[0038] Reference Figure 1 and Figure 2 The installation process of this novel multi-purpose filter bag pressing mechanism is as follows: First, the spring fixing seat 9, upper ring 10, supporting round steel 11, and lower ring 12 are welded and fixed to form a complete pressing frame. Then, the pressing spring 8 is directly sleeved on the spring fixing seat 9. Next, the pressing cover 7 is placed with its small end facing down, so that the small end is inserted into the inner hole of the pressing spring 8, and its large end is used to hold the top of the pressing spring 8, completing the assembly of the pressing mechanism body. The assembled pressing mechanism is placed into the filter cylinder 1. At this time, the lower surface of the lower ring 12 of the mechanism is in contact with the upper surface of the ring opening of the support net 2 and the filter bag 3, which are already installed in the cylinder 1. After adjusting the pressing mechanism to be stable, the filter upper cover 4 is covered and tightened with connecting bolts 6 and connecting nuts 5. During the tightening process, the upper cover 4 presses down on the pressing cover 7, thereby compressing the pressing spring 8, so that the mechanism generates the required preload and presses the filter bag 3 onto the support net 2. When the filter bag 3 needs to be replaced, unscrew the connecting nut 5 and open the top cover 4 to remove the external force acting on the clamping mechanism. The clamping spring 8 then rebounds, driving the clamping mechanism to reset to its initial state, thereby retaining its clamping force for reinstallation and use.

[0039] The implementation principle of this utility model is as follows: based on elasticity and structural mechanics, its core lies in converting the externally applied fastening force into a continuous and adaptive elastic clamping force within the mechanism. When the filter cover 4 is tightened by bolts, it applies downward pressure to the clamping cover 7. This pressure is first transmitted to the clamping spring 8, causing it to undergo compression deformation and store mechanical energy as elastic potential energy. This potential energy is then converted into a stable, vertically downward clamping force acting on the surface of the filter bag 3's annular opening through the rigid clamping frame composed of the welded and fixed upper ring 10, supporting round steel 11, and lower ring 12, ensuring a tight fit between the filter bag 3 and the support mesh 2. During this process, the stepped clamping cover 7 achieves automatic centering through the cooperation between its small end 72 and the inner hole of the spring, ensuring that the pressure transmission path does not deviate. Multiple clamping springs 8, evenly positioned by the spring fixing seat 9, work together to form a pressure equalization system that can automatically compensate for minor changes in the thickness of the filter bag 3 and system vibration, thereby ensuring constant pressure on the sealing surface.

[0040] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel multi-purpose filter bag pressing mechanism, characterized in that, include: The clamping frame is composed of an upper ring (10) and a lower ring (12) and a plurality of supporting round steel bars (11) connected between the two; Multiple spring retainers (9) are fixedly connected to the upper ring (10); Multiple compression springs (8), each of the compression springs (8) is correspondingly sleeved on the spring fixing seat (9); A pressure cap (7) is disposed at the top of the pressure spring (8).

2. The novel multi-purpose filter bag pressing mechanism according to claim 1, characterized in that, The multiple spring fixing seats (9) are evenly distributed along the circumference of the upper ring (10).

3. The novel multi-purpose filter bag pressing mechanism according to claim 1, characterized in that, The clamping cap (7) has a stepped structure, which includes a large end (71) and a small end (72) arranged coaxially; The outer diameter of the large end (71) is larger than the outer diameter of the compression spring (8); The small end (72) is inserted into the inner hole of the compression spring (8).

4. The novel multi-purpose filter bag pressing mechanism according to claim 1, characterized in that, The two ends of the supporting round steel (11) are welded and fixed to the lower surface of the upper ring (10) and the upper surface of the lower ring (12), respectively.

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