Composite filter device and equipment tank

Abstract

The application provides a composite filter device and a device tank body, the composite filter device comprises a front filter element, an outer shell body, and a rear filter element arranged in the outer shell body, the front filter element has a first water outlet towards the outer shell body, the rear filter element has a second water outlet exposed from the outer shell body, and the rear filter element is arranged in a spaced mode with the front filter element and the outer shell body to form a containing gap, and the containing gap is filled with a filler. The composite filter device of the application can prevent the filler in the outer shell body from escaping and achieve a better filtering effect by arranging the front filter element and the rear filter element.

Description

Technical Field

[0001] This invention relates to a composite filtration device and its tank. Background Technology

[0002] Currently, there are two common structures for packed filter elements: one is a bulk form, where there are supporting partitions inside the equipment, with a sieve plate or square mesh above the partitions, and then the packing particles above that. The medium flows through the packing for adsorption or exchange. The other is a filter element form, which consists of inner and outer skeletons, upper and lower end caps, sealing gaskets, and filter material inside the inner and outer skeletons. Packing is then added into the tubular annular cavity of the inner and outer skeletons. The filter material on both sides prevents the escape of the packing particles.

[0003] However, bulk packaging is prone to powder leakage. Small particles and powder from broken packing material can pass through the screen and cause contamination and damage to downstream equipment. Furthermore, most packing materials require backwashing and regeneration after a period of use. During this process, the packing material may be washed away and carried away by the backwashing medium, resulting in packing material loss and contamination of the backwashing medium.

[0004] The limited surface area of ​​the filter material on both sides of the cartridge-type packing material restricts its precision, otherwise it would affect the overall flow capacity of the cartridge. As a result, small particles and powder can still escape, causing downstream contamination. Furthermore, the cartridge structure results in uneven media flow channels, with shorter channels near the outlet and higher media throughput. This leads to lower packing material utilization and reduced adsorption or exchange efficiency.

[0005] In view of this, it is necessary to improve the existing composite filtration devices to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a composite filtration device to solve the problem of easy material leakage in existing bulk and cartridge filter media.

[0007] To achieve the above objectives, the present invention provides a composite filtration device, which includes a pre-filter, a housing, and a post-filter disposed within the housing. The pre-filter has a first outlet facing the housing, and the post-filter has a second outlet exposed from the housing. The post-filter is spaced apart from the pre-filter and the housing to form a receiving gap, and the receiving gap is filled with filler.

[0008] As a further improvement of the present invention, the composite filtration device further includes a front end cover disposed at one end of the outer casing and a rear end cover disposed at the other end of the outer casing, wherein the end of the pre-filter element having a first water outlet is connected to the front end cover, and the end of the post-filter element having a second water outlet is connected to the rear end cover.

[0009] As a further improvement of the present invention, the outer shell is detachably connected to the front cover and the rear cover.

[0010] As a further improvement of the present invention, the detachable connection between the outer shell and the front and rear covers is one of threaded connection, clamp connection, and snap-fit ​​connection.

[0011] As a further improvement of the present invention, the front end cover and the pre-filter element are sealed together using one of the following structures: O-ring, gasket, or thread.

[0012] As a further improvement of the present invention, the rear end cover and the rear filter element are sealed and connected by one of the following structures: O-ring, gasket, and thread.

[0013] As a further improvement of the present invention, the rear end cover is provided with a sealing block protruding towards the end away from the front end cover, the sealing block is provided with an opening for exposing the second water outlet, the sealing block is provided with a sealing groove in the radial direction, and the composite filter device further includes a sealing ring disposed in the sealing groove.

[0014] As a further improvement of the present invention, the post-filter element is provided with a triangular bracket with a flow guiding function on the side facing the pre-filter element.

[0015] As a further improvement of the present invention, the pre-filter includes a first upper end cover, a first lower end cover, and a first filter layer disposed between the first upper end cover and the first lower end cover.

[0016] As a further improvement of the present invention, the post-filter includes a second upper end cover, a second lower end cover, and a second filter layer disposed between the second upper end cover and the second lower end cover, wherein the second filter layer adopts a folded structure.

[0017] The present invention also provides a device tank, the device tank comprising at least two composite filtration devices as described above.

[0018] The beneficial effects of the present invention are: the composite filtration device and equipment tank of the present invention, by setting a pre-filter element and a post-filter element, can prevent the packing material in the outer shell from escaping and achieve a better filtration effect. Attached Figure Description

[0019] Figure 1 This is a half-sectional structural diagram of the composite filtration device of the present invention;

[0020] Figure 2 This is a half-sectional structural diagram of the pre-filter element of the composite filtration device of the present invention;

[0021] Figure 3This is a half-sectional structural diagram of the post-filter element of the composite filtration device of the present invention. Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figures 1 to 3 As shown, the equipment tank of the present invention has at least two composite filtration devices 100. In this embodiment, the number of composite filtration devices 100 is 7, and the specific number can be adjusted according to requirements.

[0026] The composite filtration device 100 includes a pre-filter element 1, a housing 2, a post-filter element 3 disposed within the housing 2, a packing material 4 disposed within the housing 2, a front end cover 5 disposed at one end of the housing 2, a rear end cover 6 disposed at the other end of the housing 2, and a sealing ring 7.

[0027] like Figure 2As shown, the pre-filter 1 includes a first upper end cover 11, a first lower end cover 12, a first filter element layer 13 disposed between the first upper end cover 11 and the first lower end cover 12, a first inner frame 14 disposed radially within the first filter element layer 13, a first outer frame 15 disposed radially outside the first filter element layer 13, and a first tripod 16 disposed on the side of the first upper end cover 11 away from the first lower end cover 12. The pre-filter 1 has a first outlet 17 facing the outer casing 2.

[0028] The first filter layer 13 of the pre-filter 1 can play a pre-filtration role, which can ensure that impurities in the medium will not enter the housing and the post-filter 3 inside the housing. The medium filtered by the pre-filter 1 enters the outer shell 2 through the first outlet 17.

[0029] The pre-filter 1 has one end with a first outlet 17 connected to the front cover 5.

[0030] The first tripod 16 serves as a guide.

[0031] The post-filter element 3 is spaced apart from the pre-filter element 1 and the outer shell 2 to form a receiving gap, and the receiving gap is filled with filler 4.

[0032] like Figure 3 As shown, the post-filter element 3 includes a second upper end cover 31, a second lower end cover 32, a second filter element layer 33 disposed between the second upper end cover 31 and the second lower end cover 32, a second inner frame 34 radially disposed within the second filter element layer 33, a second outer frame 35 radially disposed outside the second filter element layer 33, and a second triangular frame 36 disposed on the side of the second upper end cover 31 away from the second lower end cover 32. The post-filter element 3 has a second outlet 37 exposed from the outer casing 2. The second filter element layer 33 adopts a folded structure to increase the filtration area, increase the flow rate of the medium, and improve the filtration efficiency.

[0033] The second tripod 36 serves as a guide, directing the medium discharged from the first outlet 17 to the packing 4 outside the post-filter element 3. After passing through the second filter element layer 33 via the packing 4, the adsorption and exchange effects of the packing 4 can be improved.

[0034] The post-filter element 3 has a second outlet 37 at one end connected to the rear end cover 6. The post-filter element 3 is used to intercept the packing 4, ensuring that the medium does not carry any packing 4 into the downstream equipment. The design of the composite filtration device 100 can fully utilize the function of the packing 4 and prevent the packing 4 from escaping downwards. The pre-filter element 1 can prevent the packing 4 from escaping upwards.

[0035] The outer casing 2 is detachably connected to the front cover 5 and the rear cover 6. The detachable connection between the outer casing 2 and the front cover 5 and rear cover 6 can be achieved through one of three methods: threaded connection, clamp connection, or snap-fit ​​connection. This facilitates the replacement of the packing 4 inside the outer casing 2, allowing all components except the packing 4 to be reused multiple times, thereby reducing the operating cost of the equipment. The outer casing 2 can be made of various materials such as metal, plastic, and ceramic, depending on the operating conditions.

[0036] The front cover 5 and the pre-filter 1 are sealed together using an O-ring, gasket, or thread. The rear cover 6 and the rear filter 3 are sealed together using an O-ring, gasket, or thread. This facilitates the replacement of the pre-filter 1 and the rear filter 3.

[0037] The rear cover 6 has a sealing block protruding from the end away from the front cover 5. The sealing block has an opening for exposing the second water outlet 37. The sealing block has a sealing groove recessed radially. The sealing ring 7 is disposed in the sealing groove. The sealing block is used to connect with the pipeline to discharge the filtered medium.

[0038] The flow path of the medium is as follows: it enters the pre-filter 1 from the outside of the first filter layer 13, is discharged from the first outlet 17, and enters the outer shell 2; it is filtered by the packing 4 in the receiving gap, passes through the second filter layer 33 and enters the post-filter 3, and is finally discharged from the second outlet 37.

[0039] The filler 4 is the core material of the composite filter device 100 and can be selected according to the working conditions. The pre-filter 1 and the post-filter 3 can prevent the filler 4 from escaping upstream and downstream.

[0040] The composite filtration device 100 of the present invention, by setting a pre-filter element 1, a packing material 4, and a post-filter element 3, ensures sufficient filtration area and, without affecting the media flow rate, designs its precision to be high enough to ensure that the packing material 4 and particulate powder do not escape upstream or downstream. Furthermore, depending on the type of packing material 4, the type of media, and the requirements of the operating conditions, the pre-filter element 1 and the post-filter element 3 can be designed separately in terms of material, structure, dimensions, filtration area, filtration precision, sealing method, etc., to achieve better filtration effect and improve filtration efficiency.

[0041] The composite filtration device 100 and equipment tank of the present invention, by setting a pre-filter element 1 and a post-filter element 3, can prevent the packing material 4 in the outer shell 2 from escaping and achieve a better filtration effect.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A composite filtration device, characterized in that: The composite filtration device includes a pre-filter, a housing, a post-filter disposed within the housing, a front end cover at one end of the housing, and a rear end cover at the other end of the housing. The pre-filter has a first outlet facing the housing, and the post-filter has a second outlet exposed from the housing. The post-filter is spaced apart from the pre-filter and the housing to form a receiving gap, which is filled with filler. The pre-filter includes a first upper end cover, a first lower end cover, and a first filter layer disposed between the first upper end cover and the first lower end cover, serving a pre-filtration function. The post-filter includes a second upper end cover, a second lower end cover, and a second upper end cover. The device includes a second filter element layer disposed between the second upper end cover and the second lower end cover to improve the adsorption and exchange effect of the packing material. The second filter element layer has a folded structure. The pre-filter element has one end with a first outlet connected to the front end cover. The post-filter element has one end with a second outlet connected to the rear end cover. The rear end cover has a sealing block protruding from the end away from the front end cover. The sealing block has an opening for exposing the second outlet. The sealing block has a sealing groove recessed radially. The composite filtration device also includes a sealing ring disposed in the sealing groove. The post-filter element has a triangular bracket with a flow guiding function on the side facing the pre-filter element.

2. The composite filtration device according to claim 1, characterized in that: The outer shell is detachably connected to the front cover and the rear cover.

3. The composite filtration device according to claim 2, characterized in that: The detachable connection between the outer shell and the front and rear covers is one of the following: threaded connection, clamp connection, or snap-fit ​​connection.

4. The composite filtration device according to claim 1, characterized in that: The front cover and the pre-filter are sealed together using one of the following structures: O-ring, gasket, or thread.

5. The composite filtration device according to claim 2, characterized in that: The rear end cover and the rear filter element are sealed together using one of the following structures: O-ring, gasket, or thread.

6. A tank for equipment, characterized in that: The equipment tank includes at least two composite filtration devices as described in any one of claims 1-5.

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