Filter with filter material easy to replace

Abstract

The utility model relates to a filter with easily replaced filter material, which comprises a shell and a central pipe, the shell comprises a first barrel body and an upper cover, and the first barrel body and the upper cover are detachably connected and sealed; a water inlet and a water outlet are formed in the first barrel body, and both the water inlet and the water outlet are communicated with an inner cavity of the first barrel body; the central pipe is arranged in an inner cavity of the first barrel body, and an accommodating cavity for accommodating a filter material is formed between the inner barrel wall of the first barrel body and the outer pipe wall of the central pipe; a lower-end pipe orifice of the central pipe is communicated with the water outlet and is sealed, and an upper-end pipe orifice of the central pipe is blocked, or the upper-end pipe orifice of the central pipe is separated from the accommodating cavity through an upper cover; a plurality of water passing holes are formed in the pipe wall of the center pipe and communicated with the containing cavity and an inner cavity of the center pipe. According to the utility model, the filter material can be conveniently taken out and cleaned, the filter material can be used for the second time, and the water treatment cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to a filter with easily replaceable filter material. Background Art

[0002] The conventional pool filter uses a paper filter element 1 for filtering, which blocks dirt through the pores of the filter paper 2, and the water that passes through the filter paper 2 flows out from the inner tank 3. Figure 1 and Figure 2 After the filter paper 2 is dirty, it is difficult to clean the filter and the filter paper 2 can only be discarded, which makes it difficult to reuse the filter paper 2 and causes waste. Utility Model Content

[0003] The utility model aims to provide a filter with easily replaceable filter material, wherein the filter material used can be conveniently taken out and cleaned, and the filter material can be reused, thereby helping to reduce water treatment costs.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A filter with easily replaceable filter material comprises an outer shell and a central tube, wherein the outer shell comprises a first barrel body and an upper cover, wherein the first barrel body and the upper cover are detachably connected and sealed; a water inlet and a water outlet are provided on the first barrel body, and both the water inlet and the water outlet are connected to the inner cavity of the first barrel body; the central tube is placed in the inner cavity of the first barrel body, and a containing cavity for placing the filter material is formed between the inner barrel wall of the first barrel body and the outer tube wall of the central tube; the lower end of the central tube is connected to the water outlet and is sealed, and the upper end of the central tube is blocked, or the upper end of the central tube is separated from the containing cavity by the upper cover; a plurality of water holes are provided on the tube wall of the central tube, and the water holes connect the containing cavity and the inner cavity of the central tube.

[0006] Through the above arrangement, the filter material can be easily poured out from the accommodating chamber by simply opening the upper cover, and the filter material can be easily taken out and cleaned, thereby realizing the secondary use of the filter material, which is beneficial to reducing the cost of water treatment. The inner diameter of the central tube can be designed to be consistent with the inner diameter of the existing paper filter element liner, and the user can directly use the central tube for modification without replacing the filter, and the modification cost is low. In addition, the utility model has a simple structure, a simpler preparation process, and a low cost.

[0007] A first positioning ring is provided at the bottom of the first barrel, the inner cavity of the first positioning ring is connected to the water outlet, a second positioning ring is provided on the upper cover, the lower end of the central tube is plugged and matched with the first positioning ring and sealed, and the upper end of the central tube is plugged and matched with the second positioning ring and sealed. After such a configuration, the central tube can be easily disassembled, which is conducive to the maintenance and cleaning of the filter. At the same time, the central tube can be stably positioned in the shell to ensure the sewage filtering effect.

[0008] A first sealing ring is embedded in the lower end of the central tube, and the first sealing ring blocks the gap between the central tube and the first positioning ring; a second sealing ring is embedded in the upper end of the central tube, and the second sealing ring blocks the gap between the central tube and the second positioning ring. After such an arrangement, the filtered water can only flow into the water outlet from the water hole, thereby ensuring the sewage filtering effect.

[0009] The water holes are arranged at the upper section of the central tube, and are arranged in sequence along the length direction of the central tube. The length direction of the water holes is perpendicular to the length direction of the central tube, and the length of the water holes increases from bottom to top. After such arrangement, the length of the sewage passing through the filter material can be extended to a certain extent, thereby improving the filtering effect.

[0010] It also includes a second barrel body, which is placed in the inner cavity of the first barrel body, and the central tube is placed in the inner cavity of the second barrel body, the bottom of the central tube is connected to the barrel bottom of the second barrel body, and the central tube runs through the barrel bottom of the second barrel body; the accommodating cavity is formed between the inner barrel wall of the second barrel body and the outer tube wall of the central tube, and a water passage is formed between the inner barrel wall of the first barrel body and the outer barrel wall of the second barrel body. After such arrangement, the sewage passes through the water inlet and the water passage in turn, and the sewage passes through the filter material from top to bottom, which can extend the length of the sewage passing through the filter material to a certain extent, which is conducive to improving the filtering effect. In addition, when the filter material needs to be taken out, the filter material together with the second barrel body and the central tube can be taken out at one time. When the first barrel body is fixed on the ground, the filter material can also be conveniently and thoroughly taken out, and maintenance is more convenient.

[0011] The water holes are arranged at the lower section of the central tube, and are arranged in sequence along the length direction of the central tube. The length direction of the water holes is perpendicular to the length direction of the central tube, and the length of the water holes increases from top to bottom. After such arrangement, the length of the sewage passing through the filter material can be extended to a certain extent, which is conducive to improving the filtering effect.

[0012] The central tube is integrally formed in the second barrel, or the central tube and the second barrel are detachably connected and sealed. After such arrangement, the connection stability of the central tube can be ensured, and the sealing performance of the central tube and the second barrel is also better.

[0013] The second barrel body is provided with a retaining ring at the barrel opening, and the first barrel body and the upper cover cooperate to compress the retaining ring; the upper end of the barrel wall of the second barrel body is provided with a plurality of water inlet holes. After such arrangement, the installation stability of the second barrel body and the central tube can be ensured.

[0014] The shell further comprises a locking ring, the lower end of the upper cover is inserted into the barrel opening of the first barrel body, the locking ring is threadedly connected to the outer periphery of the first barrel body, the locking ring is provided with a limiting edge that cooperates with the upper cover, and when the locking ring is tightened, the limiting edge presses the upper cover onto the first barrel body. With this arrangement, the shell is easy to assemble and disassemble, and the connection is reliable.

[0015] The outer periphery of the upper cover is embedded with a third sealing ring, and the third sealing ring seals the gap between the upper cover and the first barrel body. After such arrangement, the sealing between the upper cover and the first barrel body can be ensured.

[0016] After adopting the above scheme, the filter material can be easily poured out from the accommodating cavity by simply opening the upper cover, and the filter material can be easily taken out and cleaned, thereby realizing the secondary use of the filter material, which is conducive to reducing the cost of water treatment. The inner diameter of the central tube can be designed to be consistent with the inner diameter of the existing paper filter element liner. The user can directly use the central tube for modification without replacing the filter, and the modification cost is low. In addition, the utility model has a simple structure, a simpler preparation process, and a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a traditional paper filter element.

[0018] Figure 2 A cross-sectional view of a conventional filter.

[0019] Figure 3 It is a cross-sectional view of the first embodiment.

[0020] Figure 4 Schematic diagram of the central tube of Example 1.

[0021] Figure 5 2 is a cross-sectional view of the center tube of Example 1.

[0022] Figure 6 It is a cross-sectional view of the second embodiment.

[0023] Figure 7 This is a schematic diagram of the central tube and the second barrel of Example 2.

[0024] Figure 8 It is a cross-sectional view of the central tube and the second barrel of the second embodiment.

[0025] Fig. 9 It is a cross-sectional view of the center tube and the second barrel body in the direction of A in the second embodiment.

[0026] Marking Description:

[0027] A first barrel body 11, an upper cover 12, a locking ring 13, a limiting edge 14, a third sealing ring 15, a water inlet 16, a water outlet 17, a first positioning ring 18, and a second positioning ring 19;

[0028] Central tube 20, water hole 21, first sealing ring 22, second sealing ring 23;

[0029] The second barrel 30, the baffle ring 31, and the water inlet hole 32;

[0030] Filter material 40. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] Embodiment 1

[0034] like Figure 3-5 As shown, this embodiment discloses a filter for easily replacing filter material 40, which includes a shell and a central tube 20, and the central tube 20 is placed in the shell. The shell includes a first barrel body 11, an upper cover 12 and a locking ring 13. The lower end of the upper cover 12 is inserted into the barrel mouth of the first barrel body 11 and is mutually limited, that is, the depth of the upper cover 12 inserted into the first barrel body 11 is limited. The locking ring 13 is threadedly connected to the outer periphery of the first barrel body 11, and a limiting edge 14 is provided on the locking ring 13 to limit the upper cover 12. When the locking ring 13 is tightened, the limiting edge 14 presses the upper cover 12 on the first barrel body 11. The shell arranged in this way is easy to load and unload, and the connection is reliable. In addition, a third sealing ring 15 is also embedded on the outer periphery of the upper cover 12, and the third sealing ring 15 is not easy to fall off. The third sealing ring 15 is used to block the gap between the upper cover 12 and the first barrel body 11 to ensure the sealing between the upper cover 12 and the first barrel body 11.

[0035] The first barrel body 11 is provided with a water inlet 16 and a water outlet 17, both of which are connected to the inner cavity of the first barrel body 11, wherein the water outlet 17 is connected to the inner cavity of the first barrel body 11 at the center of the barrel bottom. The central tube 20 is placed in the inner cavity of the first barrel body 11, and a receiving cavity for placing the filter material 40 is formed between the inner barrel wall of the first barrel body 11 and the outer tube wall of the central tube 20. A plurality of water holes 21 are provided on the tube wall of the central tube 20, and the water holes 21 connect the receiving cavity and the inner cavity of the central tube 20. At this time, the inner cavity of the central tube 20 is an outflow channel for filtered water, which is connected to the water outlet 17.

[0036] In order to prevent sewage from entering the inner cavity of the central tube 20, the following design is made: a first positioning ring 18 is provided at the bottom of the first barrel 11, the inner cavity of the first positioning ring 18 is connected to the water outlet 17, and a second positioning ring 19 is provided on the upper cover 12, the lower end of the central tube 20 is plugged with the first positioning ring 18, and the upper end of the central tube 20 is plugged with the second positioning ring 19. In addition, a first sealing ring 22 is embedded in the lower end of the central tube 20, and the first sealing ring 22 is used to block the gap between the central tube 20 and the first positioning ring 18. A second sealing ring 23 is embedded in the upper end of the central tube 20, and the second sealing ring 23 is used to block the gap between the central tube 20 and the second positioning ring 19. After such a setting, the central tube 20 can be easily disassembled, which is conducive to the maintenance and cleaning of the filter. At the same time, it can ensure that the position of the central tube 20 in the shell is stable and the sewage filtering effect is guaranteed. Of course, the upper end of the central tube 20 can also be directly blocked, and the second positioning ring 19 on the upper cover 12 can be retained to limit the position of the central tube 20.

[0037] In addition, in order to extend the filtration length of the sewage to a certain extent and thus improve the filtration effect, the present embodiment sets the water holes 21 at the upper section of the central tube 20, and the water holes 21 are sequentially arranged at intervals along the length direction of the central tube 20, and the water holes 21 can be arranged in multiple rows. The length direction of the water holes 21 is perpendicular to the length direction of the central tube 20, and the length of the water holes 21 increases from bottom to top. After the sewage is introduced into the water inlet 16, the sewage flows up in the accommodating chamber. Because the length of the water hole 21 at the bottom is the smallest and the water flow area is also small, the sewage will continue to rise, thereby allowing part of the sewage to obtain a longer filtration length.

[0038] The filter of this embodiment only needs to open the upper cover 12 to conveniently pour out the filter material 40 from the accommodating cavity, and the filter material 40 can be easily taken out and cleaned, thereby realizing the secondary use of the filter material 40, which is beneficial to reducing the water treatment cost. In addition, the structure of the filter is also very simple.

[0039] Embodiment 2

[0040] like Figure 6-9As shown, the difference between this embodiment and the first embodiment is that it further includes a second barrel body 30, the second barrel body 30 is placed in the inner cavity of the first barrel body 11, the central tube 20 is placed in the inner cavity of the second barrel body 30, and the bottom of the central tube 20 is connected to the barrel bottom of the second barrel body 30, and the central tube 20 runs through the barrel bottom of the second barrel body 30. The central tube 20 can be integrally formed with the second barrel body 30, which can ensure the connection stability of the central tube 20, and the sealing performance of the central tube 20 and the second barrel body 30 is also better. Alternatively, the central tube 20 and the second barrel body 30 are detachably connected, such as threaded connection, and the connection node between the central tube 20 and the second barrel body 30 is sealed, such as adding a sealing gasket. This arrangement can be more convenient to clean and the replacement cost is also lower when damage occurs.

[0041] In this embodiment, a receiving chamber for placing the filter material 40 is formed between the inner barrel wall of the second barrel body 30 and the outer tube wall of the central tube 20. When the filter material 40 needs to be taken out, the filter material 40 together with the second barrel body 30 and the central tube 20 can be taken out at one time. When the first barrel body 11 is fixed on the ground, the filter material 40 can also be conveniently and thoroughly taken out, and maintenance is more convenient. A water passage is formed between the inner barrel wall of the first barrel body 11 and the outer barrel wall of the second barrel body 30. In addition, the water holes 21 are changed to the lower section of the central tube 20, and the water holes 21 are arranged in sequence along the length direction of the central tube 20. The water holes 21 can be arranged in multiple rows. The length direction of the water holes 21 is perpendicular to the length direction of the central tube 20, and the length of the water holes 21 increases from top to bottom. After such arrangement, the sewage passes through the water inlet 16 and the water passage in turn, and then passes through the filter material 40 from top to bottom, which can extend the length of the sewage passing through the filter material 40 to a certain extent, which is beneficial to improving the filtering effect.

[0042] In order to reinforce the second barrel body 30 and avoid affecting the sealing of the central tube 20, a retaining ring 31 is provided at the barrel opening of the second barrel body 30, and the first barrel body 11 and the upper cover 12 cooperate to compress the retaining ring 31. In addition, a plurality of water inlet holes 32 are provided at the upper end of the barrel wall of the second barrel body 30 to prevent the retaining ring 31 from affecting the water flow.

[0043] The key point of the utility model is that the filter material 40 can be easily taken out by opening the upper cover 12, and the filter material 40 can be cleaned, thereby realizing the secondary use of the filter material 40, which is conducive to reducing the cost of water treatment. The inner diameter of the central tube 20 can be designed to be consistent with the inner diameter of the existing paper filter element liner, and the user can directly use the central tube 20 for modification without replacing the filter, and the modification cost is low. In addition, the utility model has a simple structure, a simpler preparation process, and a low cost.

[0044] The above description is only an embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A filter with easily replaceable filter material, characterized in that: It includes an outer shell and a central tube, the outer shell includes a first barrel body and an upper cover, the first barrel body and the upper cover are detachably connected and sealed; the first barrel body is provided with a water inlet and a water outlet, the water inlet and the water outlet are both connected to the inner cavity of the first barrel body; the central tube is placed in the inner cavity of the first barrel body, and a containing cavity for placing filter material is formed between the inner barrel wall of the first barrel body and the outer tube wall of the central tube; the lower end of the central tube is connected to the water outlet and sealed, and the upper end of the central tube is blocked, or the upper end of the central tube is separated from the containing cavity by the upper cover; a plurality of water holes are provided on the tube wall of the central tube, and the water holes connect the containing cavity and the inner cavity of the central tube.

2. A filter with easily replaceable filter material according to claim 1, characterized in that: A first positioning ring is provided at the bottom of the first barrel body, the inner cavity of the first positioning ring is connected to the water outlet, and a second positioning ring is provided on the upper cover. The lower end of the central tube is plugged into and sealed with the first positioning ring, and the upper end of the central tube is plugged into and sealed with the second positioning ring.

3. A filter with easily replaceable filter material according to claim 2, characterized in that: A first sealing ring is embedded in the lower end of the central tube, and the first sealing ring blocks the gap between the central tube and the first positioning ring; a second sealing ring is embedded in the upper end of the central tube, and the second sealing ring blocks the gap between the central tube and the second positioning ring.

4. The filter with easily replaceable filter material according to claim 1, characterized in that: The water holes are arranged in the upper section of the central tube, and are arranged in sequence at intervals along the length direction of the central tube. The length direction of the water holes is perpendicular to the length direction of the central tube, and the length of the water holes increases from bottom to top.

5. The filter with easily replaceable filter material according to claim 1, characterized in that: It also includes a second barrel body, which is placed in the inner cavity of the first barrel body, and the central tube is placed in the inner cavity of the second barrel body. The bottom of the central tube is connected to the bottom of the second barrel body, and the central tube passes through the bottom of the second barrel body; the accommodating cavity is formed between the inner barrel wall of the second barrel body and the outer tube wall of the central tube, and a water passage is formed between the inner barrel wall of the first barrel body and the outer barrel wall of the second barrel body.

6. The filter with easily replaceable filter material according to claim 5, characterized in that: The water holes are arranged in the lower section of the central tube, and are arranged in sequence at intervals along the length direction of the central tube. The length direction of the water holes is perpendicular to the length direction of the central tube, and the length of the water holes increases from top to bottom.

7. The filter with easily replaceable filter material according to claim 5, characterized in that: The central tube is integrally formed in the second barrel, or the central tube and the second barrel are detachably connected and sealed.

8. The filter with easily replaceable filter material according to claim 5, characterized in that: A retaining ring is arranged at the barrel opening of the second barrel body, and the first barrel body and the upper cover cooperate to compress the retaining ring; a plurality of water inlet holes are arranged at the upper end of the barrel wall of the second barrel body.

9. The filter with easily replaceable filter material according to claim 1, characterized in that: The shell also includes a locking ring. The lower end of the upper cover is inserted into the barrel mouth of the first barrel body. The locking ring is threadedly connected to the outer periphery of the first barrel body. The locking ring is provided with a limiting edge that cooperates with the upper cover. When the locking ring is tightened, the limiting edge presses the upper cover onto the first barrel body.

10. The filter with easily replaceable filter material according to claim 9, characterized in that: A third sealing ring is embedded on the outer periphery of the upper cover, and the third sealing ring seals the gap between the upper cover and the first barrel body.

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