A multi-media filter for nmp waste liquid recovery

Abstract

The utility model relates to a kind of multi-medium filters for NMP waste liquid recovery, including filter tank, containing cylinder, overflow tank, vibration impurity removal device, overflow tank is set in filter tank inner chamber upper end;Filter tank inner middle part is provided with containing cylinder, containing cylinder both ends edge is fixedly connected with filter tank inner wall by several shock absorber supports, several baffle plates are arranged in containing cylinder longitudinally, and baffle plate is separated to form several chambers for placing different filter medium by containing cylinder;Vibration impurity removal device includes vibration rod and vibration motor, and vibration rod is longitudinally arranged in the center of containing cylinder and is fixedly connected with containing cylinder, and the bottom end of vibration rod is connected with connecting pipe, and the lower end of connecting pipe is fixedly connected with the output end of vibration motor installed in the bottom of the groove, and vibration motor drives vibration rod vibration and conduction to containing cylinder and filter medium, so that the impurities attached on filter medium are separated, and are discharged from the impurity discharge pipe under the driving of backflushing water flow, effectively improve the service life of filter.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid filter technology, and in particular to a multi-media filter for NMP waste liquid recovery. Background Technology

[0002] NMP wastewater typically contains suspended particles (such as electrode material debris), metal ions, oils, and trace amounts of organic matter. Removal of suspended solids is necessary to extend the lifespan of subsequent membrane separation or distillation equipment. During filtration, suspended particles, colloids, and organic matter are progressively trapped by different media layers. Over time, these impurities clog the pores of the media, narrowing the water flow channels, reducing the effective filtration area, and decreasing the adsorption and interception capacity. Therefore, regular backwashing is required to remove impurities adhering to the media. Chinese patent document CN201120439235.2 discloses a novel multi-media filter for water treatment. This application embeds an impeller within the media layer. During backwashing to remove impurities, the rotation of the impeller, in conjunction with the aeration inlet pipe, effectively removes the impurities adhering to the media layer. However, this method of using agitation to move the media layer and remove adsorbed impurities not only results in high agitation resistance, easily causing motor load, but also mixes the media layers, disrupting their original order and affecting the filtration effect. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a multi-media filter for NMP waste liquid recovery, which solves the problem that traditional multi-media filters cannot effectively perform backwashing operations, thus affecting the filtration effect.

[0004] The specific technical solution is as follows:

[0005] A multi-media filter for NMP waste liquid recovery includes a filter tank, a receiving cylinder, an overflow trough, and a vibration removal device. The filter tank has a backflushing port at its top and a discharge trough at its bottom center, with a discharge port connected to one side of the discharge trough. A water inlet is located at the lower end of the side wall of the filter tank. The annular overflow trough is located at the upper end of the inner cavity of the filter tank and is fixed to the top of the filter tank via supports. A water outlet is connected to the bottom of one side of the overflow trough, with one end extending outside the filter tank. The receiving cylinder is located in the middle of the filter tank, and its upper and lower edges are connected to the filter tank via several shock-absorbing supports. The inner wall is fixedly connected, and several filter holes are evenly opened at the top and bottom of the container cylinder. Several horizontally distributed partitions are arranged longitudinally inside the container cylinder, and several filter holes are also opened on the partitions. The partitions divide the container cylinder into several chambers for placing different filter media. The vibration and impurity removal device includes a vibrating rod and a vibrating motor. The vibrating rod is longitudinally inserted through the center of the container cylinder and is fixedly connected to the container cylinder. The bottom end of the vibrating rod is connected to a connecting pipe. The lower end of the connecting pipe is fixedly connected to the output end of the vibrating motor installed at the bottom of the impurity discharge trough, so that the vibrating motor drives the vibrating rod to vibrate and transmits the vibration to the container cylinder and the filter media.

[0006] Preferably, the diameter of the filter holes on the accommodating cylinder and the partition gradually decreases from bottom to top.

[0007] Preferably, each of the chambers is provided with a plurality of fixed rods longitudinally.

[0008] Preferably, the overflow channel has a semi-circular arc structure with an open top, and the top of both the inner and outer sides of the overflow channel is provided with a ring of serrations, with a V-shaped overflow port formed between adjacent serrations.

[0009] Preferably, a positioning seat is installed at the center of the top and bottom of the accommodating cylinder and at the center of the partition, and the vibrating rod is disposed through the center of the positioning seat.

[0010] Preferably, a gap is left between the side wall of the receiving cylinder and the inner wall of the filter tank.

[0011] Preferably, one end of the water inlet extends into the filter tank, and one end of the water inlet is inclined.

[0012] The beneficial effects of this utility model are reflected in:

[0013] In this utility model, the tank body uses a container to hold various filter media and separates them with partitions. During backwashing, a vibrating motor drives the vibrating force to cause the container and filter media to vibrate, causing impurities attached to the filter media to detach. Then, driven by the backwash water flow, they are discharged from the discharge pipe, thus effectively performing backwashing operations and improving the service life of the filter. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a perspective view of the accommodating cylinder in this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Filter tank; 101. Inlet pipe; 102. Backwash pipe; 103. Waste discharge trough; 104. Waste discharge pipe; 2. Container cylinder; 21. Shock-absorbing support; 22. Filter hole; 23. Baffle plate; 24. Fixing rod; 25. Filter medium; 26. Positioning seat; 3. Overflow trough; 31. Serrated edge; 32. Support and hanger; 33. Outlet pipe; 4. Vibrator; 5. Connecting pipe; 6. Vibrator motor. Detailed Implementation

[0017] To make the technical solution of this utility model clearer and more explicit, the utility model will be further described below with reference to the accompanying drawings. Any solution derived by equivalent substitution and conventional reasoning of the technical features of this utility model falls within the protection scope of this utility model. The fixed connections and fixed settings mentioned in this utility model are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0019] Please see the appendix Figure 1-2 This embodiment provides a multi-media filter for NMP waste liquid recovery, including a filter tank 1, a container 2, an overflow trough 3, and a vibration and impurity removal device. The filter tank 1 has a backflushing port 102 at its top and a discharge trough 103 at its bottom center, with a discharge port 104 connected to one side of the discharge trough 103. A water inlet 101 is located at the lower end of the side wall of the filter tank 1, with one end extending into the filter tank 1 and the inlet 101 being inclined to allow water entering the filter tank 1 to impact downwards. An annular overflow trough 3 is located at the upper end of the inner cavity of the filter tank 1. The annular overflow trough 3 avoids interfering with the water flow entering through the backflushing port 102. The overflow trough 3 is connected and fixed to the top of the filter tank 1 via a support 32. A water outlet 33 is connected to the bottom of one side of the overflow trough 3, with one end extending outside the filter tank 1.

[0020] A cylindrical container 2 is provided in the middle of the filter tank 1. The upper and lower edges of the container 2 are connected and fixed to the inner wall of the filter tank 1 through several shock-absorbing supports 21. The shock-absorbing supports 21 are attached to the outer wall of the container 2 through rubber pads. A gap is left between the side wall of the container 2 and the inner wall of the filter tank 1 to prevent vibration from being transmitted to the filter tank 1. Several filter holes 22 are evenly opened at the top and bottom of the container 2. Several horizontally distributed partitions 23 are arranged longitudinally inside the container 2. Several filter holes 22 are also opened on the partitions 23. The partitions 23 divide the container 2 into several chambers for placing different filter media 25. The diameter of the filter holes 22 on the container 2 and the partitions 23 gradually decreases from bottom to top to accommodate the size of the filter media 25. During filtration, the liquid to be filtered enters through the inlet 101, then passes through the filter holes 22 from bottom to top and is filtered layer by layer by various filter media 25, and finally discharged from the filter tank 1 through the overflow trough 3.

[0021] The vibration and impurity removal device includes a vibrating rod 4 and a vibrating motor 6. The vibrating rod 4 is longitudinally inserted through the center of the receiving cylinder 2 and is fixedly connected to the receiving cylinder 2. Positioning seats 26 are installed at the center of the top and bottom ends of the receiving cylinder 2 and at the center of the partition 23. The vibrating rod 4 is inserted through the center of the positioning seat 26, thereby positioning the vibrating rod 4. A connecting pipe 5 is connected to the bottom end of the vibrating rod 4. The lower end of the connecting pipe 5 is connected and fixedly connected to the output end of the vibrating motor 6 installed at the bottom of the impurity discharge trough 103, so that the vibrating motor 6 drives the vibrating rod 4 to vibrate and transmits the vibration to the receiving cylinder 2 and the filter medium 25. In this embodiment, the vibrating rod 4 has a built-in deflector block. The lower end of the deflector block is connected to a shaft. The shaft passes through the connecting pipe 5 and is driven to rotate at high speed by the vibrating motor 6, generating unidirectional periodic vibration by using centrifugal force. This vibrating rod 4 is prior art and will not be described in detail here.

[0022] In this embodiment, each chamber is provided with a number of fixed rods 24 in a longitudinal direction. The fixed rods 24 can transmit the vibration force of the accommodating cylinder 2 to the filter medium 25 on the edge, so as to achieve uniform vibration and impurity removal.

[0023] In this embodiment, the overflow trough 3 has a semi-circular arc structure with an open top. The top of both the inner and outer sides of the overflow trough 3 is provided with a ring of serrations 31. A V-shaped overflow port is formed between adjacent serrations 31. When the filtered liquid level in the filter tank 1 reaches the top of the overflow trough 3, it flows into the overflow trough 3 through the overflow port and is then discharged out of the filter tank 1 through the water outlet pipe 33.

[0024] During backwashing, water flows into the backwash port 102 and impacts from top to bottom. At the same time, the vibrating motor 6 drives the vibration force to drive the container 2 and the filter medium 25 to vibrate, which then causes the impurities attached to the filter medium 25 to detach and finally be discharged from the discharge pipe under the drive of the backwash water flow, thus effectively carrying out the backwashing operation.

[0025] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A multi-media filter for NMP waste liquid recovery, characterized in that, The filter includes a filter tank (1), a container (2), an overflow trough (3), and a vibration and impurity removal device. The filter tank (1) has a backflushing port (102) at the top and a discharge trough (103) at the center of the bottom. A discharge port (104) is connected to one side of the discharge trough (103). The filter tank (1) has a water inlet (101) at the lower end of its side wall and an annular overflow trough (3) at the upper end of its inner cavity. The overflow trough (3) is connected and fixed to the top of the filter tank (1) by a support (32). A water outlet (33) is connected to the bottom of one side of the overflow trough (3), and one end of the water outlet (33) extends to the outside of the filter tank (1). The container (2) is located in the middle of the filter tank (1). The upper and lower edges of the container (2) are connected to the inner wall of the filter tank (1) by several shock-absorbing supports (21). The container (2) is fixed, and a number of filter holes (22) are evenly opened at the top and bottom. A number of horizontally distributed partitions (23) are arranged longitudinally inside the container (2). A number of filter holes (22) are also opened on the partitions (23). The partitions (23) divide the container (2) into a number of chambers for placing different filter media (25). The vibration and impurity removal device includes a vibrating rod (4) and a vibrating motor (6). The vibrating rod (4) is longitudinally inserted through the center of the container (2) and is fixedly connected to the container (2). A connecting pipe (5) is connected to the bottom end of the vibrating rod (4). The lower end of the connecting pipe (5) is fixedly connected to the output end of the vibrating motor (6) installed at the bottom of the impurity discharge trough (103), so that the vibrating motor (6) drives the vibrating rod (4) to vibrate and transmits the vibration to the container (2) and the filter media (25).

2. A multi-media filter for NMP waste liquid recovery as claimed in claim 1 wherein, The diameter of the filter holes (22) on the accommodating cylinder (2) and the partition plate (23) gradually decreases from bottom to top.

3. A multi-media filter for NMP waste liquid recovery as claimed in claim 2, wherein, Each of the chambers is provided with a number of fixed rods (24) arranged longitudinally.

4. A multi-media filter for NMP waste liquid recovery as claimed in claim 3 wherein, Positioning seats (26) are installed at the center of the top and bottom of the accommodating cylinder (2) and at the center of the partition (23), and the vibrating rod (4) is inserted through the center of the positioning seat (26).

5. A multi-media filter for NMP waste liquid recovery as claimed in claim 1 wherein, A gap is left between the side wall of the container (2) and the inner wall of the filter tank (1).

6. A multi-media filter for NMP waste liquid recovery as claimed in claim 1 wherein, The overflow groove (3) has a semi-circular arc structure with an open top. Both the inner and outer sides of the overflow groove (3) are provided with a ring of serrations (31), and a V-shaped overflow port is formed between adjacent serrations (31).

7. A multi-media filter for NMP waste liquid recovery as claimed in claim 1 wherein, One end of the water inlet (101) extends into the filter tank (1), and one end of the water inlet (101) is set with an inclined surface.

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