Spring pressure filtering unit

Abstract

The utility model relates to the technical field of filter element equipment, and particularly discloses a spring pressure filter unit which comprises an elastic filter element, and the elastic filter element comprises a connecting piece, an elastic piece and a filter screen bag covering the outer side of the elastic piece; the connecting piece is located at one end of the elastic piece, the elastic piece is connected with an external supporting plate through the connecting piece, the filter screen bag is provided with an inner cavity used for containing the elastic piece, and a through hole communicated with the inner cavity of the filter screen bag is formed in the connecting piece; external mixed water is filtered and separated into filtered water and filter residues through the filter screen bag, and the filtered water enters the inner cavity of the filter screen bag and is discharged through the through hole. According to the utility model, the filter unit is elastically deformed along with the change of external pressure through the elastic piece and vibrates, and filter residues on the filter screen bag are separated from the filter screen bag through the vibration, so that the automatic cleaning of the filter screen bag is realized, and the filter efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter element equipment, and particularly discloses a spring pressure filtration unit. Background Art

[0002] In modern industrial production and life, the problem of water resource pollution is becoming increasingly serious, and the filtration and purification of water quality have become an important topic. Traditional filtration equipment usually relies on static filter bags for physical filtration. However, over time, a large amount of filter residue will accumulate on the filter bags, resulting in a decrease in filtration efficiency and even clogging. To solve this problem, the common method is to manually clean the filter bags regularly. However, this not only increases the labor intensity and maintenance cost but also easily causes instability in filtration efficiency.

[0003] In the prior art, some designs for automatically cleaning filter bags have emerged, such as removing filter residue from the filter bags by backwashing methods. However, these methods often require complex structures and additional energy consumption, increasing the complexity and operating cost of the equipment. In addition, although some vibration cleaning devices can solve the problem of filter residue accumulation to a certain extent, their vibration sources are usually externally applied mechanical vibrations or electric vibrations, resulting in complex equipment structures, difficult maintenance, and high energy consumption.

[0004] Therefore, it is of great significance to develop a filtration device with a simple structure, stable operation, and capable of automatically cleaning filter bags. The present invention provides a spring pressure filtration unit, which utilizes the inherent characteristics of elastic members (such as springs) to cause the filtration unit to vibrate when the external pressure changes, thereby realizing the automatic cleaning of the filter bags. This design is not only simple in structure, easy to install and maintain, but also can effectively improve the filtration efficiency and extend the service life of the filter bags without increasing additional energy consumption. Summary of the Utility Model

[0005] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the present utility model is to provide a filtration unit that can realize the automatic cleaning of filter bags, has a long service life, and high filtration efficiency.

[0006] To achieve the above object, a spring pressure filtration unit of the present utility model includes an elastic filtration member. The elastic filtration member includes a connecting member, an elastic member, and a filter mesh bag wrapped around the outside of the elastic member. The connecting member is located at one end of the elastic member, and the elastic member is connected to an external support plate via the connecting member. The filter mesh bag has an inner cavity for accommodating the elastic member, and the connecting member is provided with a through hole communicating with the inner cavity of the filter mesh bag. External mixed water is filtered and separated into filtered water and filter residue by the filter mesh bag. The filtered water enters the inner cavity of the filter mesh bag and is discharged through the through hole. The present utility model enables the filtration unit to elastically deform and generate vibrations with the change of external pressure through the elastic member. The vibrations cause the filter residue on the filter mesh bag to separate from the filter mesh bag, realizing the automatic cleaning of the filter mesh bag, thereby improving the filtration efficiency.

[0007] Furthermore, the elastic filtration member further includes a counterweight. The connecting member and the counterweight are respectively arranged at both ends of the elastic member. The support plate is provided with a perforation communicating with the through hole, and the perforation penetrates through the support plate. Setting the counterweight enhances the inertia when the elastic member rebounds, enhances the vibration amplitude of the elastic member, thereby enhancing the vibration effect of the filtration unit, contributing to the automatic cleaning of the filter mesh bag, and thus improving the filtration efficiency.

[0008] Furthermore, the connecting member is provided with an external thread, and the inner wall of the perforation of the support plate is provided with an internal thread adapted to the external thread. The connecting member is detachably connected to the external support plate by threading. Threaded connection enables the spring pressure filtration unit to be firmly fixed on the external support plate, and at the same time, it is convenient for disassembly and maintenance through threaded connection. The addition of the counterweight also realizes the efficient rebound and vibration effect of the elastic member through the stability of the threaded connection.

[0009] Furthermore, the connecting member includes a baffle plate, connecting portions and clamping portions respectively arranged on both sides of the baffle plate. The through hole sequentially penetrates through the connecting portion, the baffle plate and the clamping portion. The elastic member is sleeved on the clamping portion, and the clamping portion is provided with a limiting protrusion protruding from the side wall of the clamping portion. The limiting protrusion prevents the elastic member from axially sliding along the clamping portion during operation, ensuring that the elastic member remains in the correct position during filtration, and enabling the vibration effect of the counterweight to be fully exerted.

[0010] Furthermore, both ends of the filter mesh bag are connected to the connecting member and the counterweight via a sealing member. The sealing member is used to seal the gaps between the connecting member and the filter mesh bag and between the counterweight and the filter mesh bag. The sealing member ensures the sealed connection between the filter mesh bag and the connecting member and the counterweight, prevents the mixed water from leaking from the connection, ensures the filtration effect, and at the same time ensures the vibration transmission effect of the counterweight.

[0011] Furthermore, the sealing member is a thermoplastic sealing film. The thermoplastic sealing film softens when heated, closely combines with the filter mesh bag, the connecting member and the counterweight, and forms a reliable sealed connection after cooling.

[0012] Furthermore, the filter bag is of an integral structure and is composed of a woven layer woven by knitting threads. The aperture of the woven layer is 30 - 80 μm. The woven layer conducts physical filtration through its fine apertures, intercepting particles and impurities larger than the aperture, with low production costs. Meanwhile, under the action of vibration, the cleaning effect of the filter bag is better.

[0013] Furthermore, the filter bag further includes a filter coating attached to the outer side of the woven layer. The filter coating is composed of filter media, and the filtration accuracy of the filter coating is 1 - 30 μm. The filter coating further improves the filtration accuracy of the filter bag, can intercept smaller particles and microorganisms, and enhances the filtration effect.

[0014] Furthermore, the elastic member is a spring. The spring has a simple structure, provides stable elastic pressure, and effectively promotes the filtration process.

[0015] Furthermore, multiple elastic filter elements are configured on the same support plate. All the elastic filter elements are located on the same side of the support plate. The multiple elastic filter elements are arranged in parallel, and the multiple elastic filter elements are arranged in a linear array, a circular array, or a rectangular array along the support plate. Multiple groups of elastic filter elements increase the filtration area, improve the filtration efficiency, and ensure the continuity and stability of the filtration process.

[0016] Advantages of the present utility model:

[0017] In the present utility model, the elastic member causes the filter unit to elastically deform with the change of external pressure and generate vibration. The vibration separates the filter residue on the filter bag from the filter bag, realizing the automatic cleaning of the filter bag;

[0018] The counterweight is provided to enhance the inertia when the elastic member rebounds, enhance the vibration amplitude of the elastic member, thereby enhancing the vibration effect of the filter unit, contributing to the automatic cleaning of the filter bag, and thus improving the filtration efficiency;

[0019] The threaded connection enables the spring pressure filter unit to be firmly fixed on the external support plate. Meanwhile, the threaded connection facilitates disassembly and maintenance. The addition of the counterweight also realizes the efficient rebound and vibration effect of the elastic member through the stability of the threaded connection;

[0020] The seal ensures the sealed connection between the filter bag, the connecting member, and the counterweight, prevents the mixed water from leaking from the connection, ensures the filtration effect, and at the same time ensures the vibration transmission effect of the counterweight. The thermoplastic sealing film softens when heated and tightly combines with the filter bag, the connecting member, and the counterweight, and forms a reliable sealed connection after cooling;

[0021] The woven layer conducts physical filtration through its fine pore size, intercepting particles and impurities larger than the pore size. The production cost is low. Meanwhile, under the action of vibration, the cleaning effect of the filter bag is better. The diatomite coating further improves the filtration accuracy of the filter bag, enabling it to intercept smaller particles and microorganisms and enhancing the filtration effect. Description of the Drawings

[0022] Figure 1 is a cross-sectional view of a spring pressure filtration unit of the present utility model;

[0023] Figure 2 is a cross-sectional view of a connecting member of the present utility model;

[0024] Figure 3 is Figure 1 a partial view of A in

[0025] Reference numerals include:

[0026] 1, elastic member; 2, filter bag; 3, connecting member; 4, counterweight; 5, through hole; 6, baffle; 7, connecting portion; 8, clamping portion; 9, limiting protrusion; 10, seal; 11, woven layer; 12, filter coating. Detailed Description of the Preferred Embodiments

[0027] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and effects of the present utility model as follows.

[0028] Please refer to Figures 1 to 3 As shown, a spring pressure filtration unit of the present utility model, the spring pressure filtration unit includes an elastic filtration member. The elastic filtration member includes a connecting member 3, an elastic member 1, and a filter bag 2 wrapped around the outside of the elastic member 1. The connecting member 3 is located at one end of the elastic member 1. The elastic member 1 is connected to an external support plate via the connecting member 3. The filter bag 2 has an inner cavity for accommodating the elastic member 1. The connecting member 3 is provided with a through hole 5 communicating with the inner cavity of the filter bag 2. External mixed water is filtered and separated into filtered water and filter residue through the filter bag 2. The filtered water enters the inner cavity of the filter bag 2 and is discharged through the through hole 5. The present utility model enables the filtration unit to undergo elastic deformation and generate vibration with the change of external pressure through the elastic member 1. The vibration separates the filter residue on the filter bag 2 from the filter bag 2, realizing the automatic cleaning of the filter bag 2, thereby improving the filtration efficiency.

[0029] The elastic filter element further includes a counterweight 4. The connecting member 3 and the counterweight 4 are respectively arranged at both ends of the elastic member 1. The support plate is provided with a perforation communicating with the through hole 5, and the perforation penetrates through the support plate. The setting of the counterweight 4 enhances the inertia when the elastic member 1 rebounds, increases the vibration amplitude of the elastic member 1, thereby enhancing the vibration effect of the filter unit, contributing to the automatic cleaning of the filter bag 2, and thus improving the filtration efficiency.

[0030] The connecting member 3 is provided with an external thread, and the inner wall of the perforation of the support plate is provided with an internal thread adapted to the external thread. The connecting member 3 is detachably connected to the external support plate by thread. The threaded connection enables the spring pressure filter unit to be firmly fixed on the external support plate, and at the same time, it is convenient for disassembly and maintenance through the threaded connection. The addition of the counterweight 4 also realizes the efficient rebound and vibration effect of the elastic member 1 through the stability of the threaded connection.

[0031] The connecting member 3 includes a baffle 6, connecting portions 7 and clamping portions 8 respectively arranged on both sides of the baffle 6. The through hole 5 sequentially penetrates through the connecting portion 7, the baffle 6 and the clamping portion 8. The elastic member 1 is sleeved on the clamping portion 8, and a limiting protrusion 9 protruding from the side wall of the clamping portion 8 is provided on the clamping portion 8. The limiting protrusion 9 prevents the elastic member 1 from sliding axially along the clamping portion 8 during operation, ensures that the elastic member 1 remains in the correct position during filtration, and enables the vibration effect of the counterweight 4 to be fully exerted.

[0032] Both ends of the filter bag 2 are connected to the connecting member 3 and the counterweight 4 via a seal 10. The seal 10 is used to seal the gaps between the connecting member 3 and the filter bag 2 and between the counterweight 4 and the filter bag 2. The seal 10 ensures the sealed connection between the filter bag 2, the connecting member 3 and the counterweight 4, prevents the mixed water from leaking from the connection, ensures the filtration effect, and at the same time ensures the vibration transmission effect of the counterweight 4.

[0033] Specifically, the counterweight 4 is made of a copper block. Copper has a relatively high density (about 8.96 g / cm 3 ), and can provide a greater weight compared to many other metal materials. This means that under the same volume, the copper block can generate a greater inertial force, thereby enhancing the vibration effect of the elastic member 1 and improving the automatic cleaning ability. At the same time, copper has good corrosion resistance, especially it is not easy to rust or corrode in a water environment. For a filtration device that needs to be in contact with water for a long time, this characteristic extends the service life of the counterweight 4 and reduces the maintenance frequency and cost.

[0034] The seal 10 is a thermoplastic sealing film. The thermoplastic sealing film softens when heated, closely combines with the filter bag 2, the connecting member 3 and the counterweight 4, and forms a reliable sealed connection after cooling.

[0035] The filter bag 2 is of an integral structure and is composed of a woven layer 11 woven by knitting threads. The aperture of the woven layer 11 is 30 - 80 μm. The woven layer 11 conducts physical filtration through its small apertures, intercepting particles and impurities larger than the aperture, with low production costs. At the same time, under the action of vibration, the cleaning effect of the filter bag 2 is better.

[0036] The filter bag 2 further includes a filter coating attached to the outer side of the woven layer 11. The filter coating is composed of filter media, and the filtration accuracy of the filter coating is 1 - 30 μm. The filter coating further improves the filtration accuracy of the filter bag 2, can intercept smaller particles and microorganisms, and enhances the filtration effect.

[0037] Specifically, the woven layer 11 is woven from threads or silk threads made of polyethylene terephthalate (PET), fiber threads, polyvinyl chloride (PVC), polyethylene (PE), or nylon.

[0038] Specifically, the woven layer 11 is wrapped around the elastic member 1 by a weaving method.

[0039] Specifically, the filter coating 12 is diatomaceous earth with 200 meshes. The diatomaceous earth coating further improves the filtration accuracy of the filter bag 2, can intercept smaller particles and microorganisms, and enhances the filtration effect. At the same time, vibration helps to prevent the blockage of the diatomaceous earth coating.

[0040] The elastic member 1 is a spring. The spring has a simple structure, provides stable elastic pressure, and effectively promotes the filtration process.

[0041] Specifically, the pitch of the spring is 10 - 16 mm. This ensures the elasticity and stability of the spring, enhances the vibration effect, and thus improves the filtration efficiency.

[0042] Specifically, the inner diameter of the spring is 13 - 15 mm, and the outer diameter of the spring is 14 - 16 mm. Through the appropriate inner and outer diameter design, the spring can provide sufficient elastic pressure and vibration amplitude within a limited space, ensuring the working efficiency of the filtration unit.

[0043] A plurality of elastic filter elements are arranged on the same support plate. All the elastic filter elements are located on the same side of the support plate. The plurality of elastic filter elements are arranged in parallel, and the plurality of elastic filter elements are arranged in a linear array, a circular array, or a rectangular array along the support plate. The multiple groups of elastic filter elements increase the filtration area, improve the filtration efficiency, and ensure the continuity and stability of the filtration process.

[0044] In this embodiment, the filtering unit is composed of an elastic member 1 and a filter bag 2 wrapped around the outside of the elastic member 1. When the mixed water and the powdered filter material enter the outer tank through the feed port, the mixed water and the filter material pass through the filter bag 2, and the filter material adheres to the filter bag 2 to form a filter coating 12. When the mixed water passes through the filter bag 2 with the attached filter coating 12, solid particles are intercepted to form filter residues, and the clean filtered water passes through the filter bag 2 and flows out through the through hole 5. As the filter residues accumulate, the pressure in the tank changes. The elastic member 1 compresses or stretches according to the pressure change, generating vibration. This vibration helps the filter residues fall off from the filter bag 2 and deposit at the bottom of the tank, maintaining the permeability of the filter bag 2 and ensuring a continuous filtering effect.

[0045] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes, but as long as they do not depart from the technical content of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A spring pressure filter unit, characterized in that: The spring pressure filter unit comprises an elastic filter element, which comprises a connecting element (3), an elastic element (1) and a filter bag (2) wrapped around the outside of the elastic element (1); the connecting element (3) is located at one end of the elastic element (1), the elastic element (1) is connected to an external support plate via the connecting element (3), the filter bag (2) has an inner cavity for accommodating the elastic element (1), and the connecting element (3) is provided with a through hole (5) connected to the inner cavity of the filter bag (2); external mixed water is filtered and separated into filtered water and filter residue via the filter bag (2), and the filtered water enters the inner cavity of the filter bag (2) and is discharged via the through hole (5).

2. A spring pressure filter unit according to claim 1, characterized in that: The elastic filter also includes a counterweight (4). The connecting member (3) and the counterweight (4) are respectively arranged at two ends of the elastic member (1). The support plate is provided with a through hole connected to the through hole (5), and the through hole passes through the support plate.

3. A spring pressure filter unit according to claim 2, characterized in that: The connecting piece (3) is provided with an external thread, and the inner wall of the perforation of the support plate is provided with an internal thread that matches the external thread. The connecting piece (3) is detachably connected to the external support plate thread.

4. A spring pressure filter unit according to claim 1, characterized in that: The connecting member (3) comprises a baffle (6), a connecting portion (7) and a locking portion (8) respectively arranged on both sides of the baffle (6); the through hole (5) passes through the connecting portion (7), the baffle (6) and the locking portion (8) in sequence; the elastic member (1) is sleeved on the locking portion (8); and the locking portion (8) is provided with a limiting protrusion (9) protruding from the side wall of the locking portion (8).

5. The spring pressure filter unit according to claim 2, characterized in that: The two ends of the filter bag (2) are connected to the connecting piece (3) and the counterweight (4) via a sealing piece (10), and the sealing piece (10) is used to seal the gap between the connecting piece (3) and the filter bag (2) and the gap between the counterweight (4) and the filter bag (2).

6. A spring pressure filter unit according to claim 5, characterized in that: The sealing element (10) is a thermoplastic sealing film.

7. The spring pressure filter unit according to claim 1, characterized in that: The filter mesh bag (2) is an integrated structure, and the filter mesh bag (2) is composed of a woven layer (11) woven by woven wires, and the pore size of the woven layer (11) is 30-80 μm.

8. A spring pressure filter unit according to claim 7, characterized in that: The filter bag (2) further comprises a filter coating (12) attached to the outside of the woven layer (11); the filter coating (12) is composed of filter material; and the filter accuracy of the filter coating (12) is 1-30 μm.

9. The spring pressure filter unit according to claim 1, characterized in that: The elastic member (1) is a spring.

10. The spring pressure filter unit according to claim 1, characterized in that: The same support plate is equipped with multiple elastic filters, all of which are located on the same side of the support plate, and the multiple elastic filters are arranged in parallel. The multiple elastic filters are arranged along the support plate in a linear array, an annular array or a rectangular array.

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