Lithium iron phosphate mother liquor filtering equipment

Abstract

Lithium iron phosphate mother liquor filtering equipment comprises a feeding cylinder and a filtering cylinder installed in the feeding cylinder, a cover body is installed above the feeding cylinder, a feeding hole is formed in the cover body, a filtering sieve pipe is connected to the lower portion of the feeding hole, and discharging holes are formed in the side wall and the bottom of the filtering sieve pipe; a vibration device is further mounted on the cover body and comprises a vibrator and a fixing frame; the filter further comprises an impact mechanism, the impact mechanism comprises a plurality of telescopic rods and a slapping plate, the telescopic rods are arranged on the inner side wall of the filter cartridge, and one end of each telescopic rod is connected with the slapping plate and arranged in the direction facing the filter screen pipe. The vibrating device drives the filter screen pipe to vibrate, so that the situation that slurry blocks a discharge hole of the filter screen pipe is reduced, and the frequency of cleaning equipment and a filter screen can be reduced; when the slurry has viscosity and is blocked and adsorbed in the screen holes, and the vibration effect cannot play an effective role, the telescopic rod drives the slapping plate to beat the filter screen pipe and is matched with the through rod on the slapping plate to pull and insert the discharge hole, so that the blockage of the discharge hole is secondarily dredged.

Description

Technical Field

[0001] The utility model specifically relates to a lithium iron phosphate mother liquor filtering device. Background Art

[0002] Lithium iron phosphate (LIFP) is the primary raw material for lithium battery cathodes. It contains no toxic elements, boasts high energy density, and has a long lifespan. It is widely used in electric vehicles, electric bicycles, and power storage. The preparation of LFP slurry is a crucial step in lithium-ion battery production.

[0003] During the preparation process, a large amount of impurities and particles may be mixed into the lithium iron phosphate slurry, affecting the purity and electrochemical properties of the product. It is necessary to filter the impurities and particles in the lithium iron phosphate slurry to separate them from the main body to ensure product quality.

[0004] Since lithium iron phosphate slurry has a high viscosity, it is easy to clog the sieve holes. The existing treatment method is to use vibration to increase the permeability of the slurry and improve the filtration speed. However, due to the viscosity of the slurry, it is easy to clog and adsorb in the sieve holes. The vibration effect cannot play an effective role, resulting in slow discharge and low efficiency. The equipment and filter need to be cleaned frequently to ensure the normal operation of the equipment, which increases operating costs. Utility Model Content

[0005] In view of the above, the present invention provides a lithium iron phosphate mother liquor filtering device to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a lithium iron phosphate mother liquor filtering device is provided, including a device main body, the device main body includes a feed cylinder and a filter cylinder installed inside the feed cylinder, a cover body is installed above the feed cylinder, the cover body is provided with a feed hole, a filter screen tube is connected below the feed hole, the filter screen tube is installed in the filter cylinder, and a number of discharge holes for pressure relief and buffering are provided on the side wall and bottom of the filter screen tube; a vibration device is also installed on the cover body, the vibration device includes a vibrator and a fixing frame for connecting to the filter screen tube, and the vibration device drives the filter screen tube to vibrate for filtering during the filtration process; it also includes an impact mechanism for slapping and unblocking the filter screen tube, the impact mechanism includes several telescopic rods and slapping plates, the telescopic rods are respectively arranged on the side walls inside the filter cylinder, one end of the telescopic rod is connected to the slapping plate and is arranged in the direction of the filter screen tube, and the slapping plate slaps the filter screen tube to unblock the discharge hole during the filtration process.

[0007] Furthermore, the slapping plate is provided with through rods corresponding to the discharge holes, which are used to clear blockages in the discharge holes.

[0008] Furthermore, the diameter of the through rod is smaller than the diameter of the discharge hole.

[0009] Furthermore, the top of the through rod is made of rubber material.

[0010] Furthermore, a shock absorber is installed between the vibrator and the cover.

[0011] Furthermore, the shock absorber is a spring shock absorber.

[0012] Furthermore, a discharge pipeline is installed at the bottom of the feed barrel, and a discharge valve is provided on the discharge pipeline.

[0013] Furthermore, a support frame is installed below the feed barrel.

[0014] The lithium iron phosphate mother liquor filtering equipment of the utility model is provided with a vibration device above the feed cylinder. During the lithium iron phosphate slurry filtering process, the vibration device drives the filter screen to vibrate, thereby reducing the occurrence of slurry blocking the filter screen outlet hole, reducing the frequency of cleaning the equipment and filter screen, and saving costs.

[0015] At the same time, an impact mechanism is provided. During the filtration process of lithium iron phosphate slurry, the telescopic rod drives the slapping plate to slap the filter screen tube, and cooperates with the through rod on the slapping plate to pump and insert the discharge hole. When the slurry has viscosity and is clogged and adsorbed in the screen hole, and the vibration effect cannot play an effective role, it is used to secondary dredge the blockage of the discharge hole;

[0016] Moreover, when the slurry enters the filter tube under a large pressure, it is easy to impact the filter screen. By opening a number of discharge holes on the side wall and bottom of the filter screen, the pressure can be relieved and buffered, reducing the impact on the filter screen, making the feed unobstructed, avoiding blockage and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural diagram of the filter screen tube.

[0019] Figure 3 It is a structural diagram of the impact mechanism and the filter screen tube.

[0020] In the figure, 1. feed cylinder; 2. filter cylinder; 3. cover body; 4. filter screen tube; 401. discharge hole; 5. vibrator; 6. fixing frame; 7. impact mechanism; 701. slapping plate; 702. telescopic rod; 703. through rod; 8. feed hole; 9. discharge pipeline; 10. discharge valve; 11. shock absorber; 12. support frame. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and some embodiments.

[0022] exist Figure 1-3 In the invention, a lithium iron phosphate mother liquor filtering device is provided, comprising a device main body, the device main body comprising a feed cylinder 1 and a filter cylinder 2 installed inside the feed cylinder 1, a cover body 3 is installed above the feed cylinder 1, the cover body 3 is provided with a feed hole 8, a filter screen tube 4 is connected below the feed hole 8, the filter screen tube 4 is installed in the filter cylinder 2, and a plurality of discharge holes 401 for pressure relief and buffering are provided on the side wall and the bottom of the filter screen tube 4; when in use, the lithium iron phosphate slurry enters the filter screen tube 4 from the feed hole 8, and the slurry enters the filter cylinder 2 under a relatively large pressure and is easy to impact the screen of the filter screen tube 4. By providing a plurality of discharge holes 401 on the side wall and the bottom of the filter screen tube 4, pressure relief and buffering can be achieved, reducing the impact on the filter screen tube 4, making the feeding unobstructed, avoiding blockage, and improving work efficiency.

[0023] In this embodiment, a vibration device is also installed on the cover body 3, and the vibration device includes a vibrator 5 and a fixing frame 6 for connecting to the filter screen tube 4. During the filtration process, the vibration device drives the filter screen tube 4 to vibrate for filtering; a vibration device is set above the feed barrel 1. During the filtration of lithium iron phosphate slurry, the vibration device drives the filter screen tube 4 to vibrate, thereby reducing the occurrence of slurry clogging the discharge hole 401 of the filter screen tube 4, reducing the frequency of cleaning the equipment and the filter screen, and saving costs.

[0024] In this embodiment, an impact mechanism 7 is also included for beating the filter screen tube 4 and clearing blockages. The impact mechanism 7 includes several telescopic rods 702 and a slapping plate 701. The telescopic rods 702 are respectively arranged on the side walls inside the filter cylinder 2. One end of the telescopic rod 702 is connected to the slapping plate 701 and is arranged in the direction of the filter screen tube 4. During the filtration process, the slapping plate 701 beats the filter screen tube 4 to clear the blockage of the discharge hole 401; at the same time, an impact mechanism 7 is provided. During the filtration of lithium iron phosphate slurry, the telescopic rod 702 drives the slapping plate 701 to beat the filter screen tube 4, and cooperates with the through rod 703 on the slapping plate 701 to pull and insert the discharge hole 401. When the slurry has viscosity and is clogged and adsorbed in the sieve hole, and the vibration effect cannot play an effective role, it is used to secondary clear the blockage of the discharge hole 401.

[0025] In this embodiment, a through rod 703 corresponding to the discharge hole 401 is distributed on the slapping plate 701, which is used to clear the blockage of the discharge hole 401; the diameter of the through rod 703 is smaller than the diameter of the discharge hole 401; when the slurry has viscosity and is blocked and adsorbed in the sieve hole, and the vibration effect cannot play an effective role, when the telescopic rod 702 drives the slapping plate 701 to slap the filter screen tube 4, the top of the through rod 703 is inserted into the discharge hole 401 to clear the blockage of the discharge hole 401 for a second time.

[0026] In this embodiment, the top of the through rod 703 is made of rubber material to avoid damage to the filter screen tube 4 and the discharge hole 401 when the top of the through rod 703 is inserted into the discharge hole 401.

[0027] In this embodiment, a shock absorber 11 is installed between the vibrator 5 and the cover 3; the shock absorber 11 is a spring shock absorber 11; and the damage to the device caused by vibration is reduced.

[0028] In this embodiment, a discharge pipeline 9 is installed at the bottom of the feed cylinder 1, and a discharge valve 10 is provided on the discharge pipeline 9; the slurry enters the equipment body from the feed hole 8 and is discharged from the discharge pipeline 9 after filtration.

[0029] In this embodiment, a support frame 12 is installed below the feed barrel 1 to support the installation equipment.

[0030] In this embodiment, the telescopic rod 702 is a common electric telescopic device, such as HB-DJ806, HTKC-55, NKLA34, etc.

[0031] In this embodiment, the control circuit of the present invention is a common circuit in the circuit field. The device of the present invention can be connected to an external power supply through a power cord to provide power to the device. Technicians in the relevant technical field can implement it and will not be elaborated here.

[0032] During the specific implementation of the present invention: lithium iron phosphate slurry enters the filter screen tube 4 from the feed hole 8, and the vibration device drives the filter screen tube 4 to vibrate during the filtering process of the lithium iron phosphate slurry, thereby reducing the occurrence of the slurry blocking the discharge hole 401 of the filter screen tube 4, reducing the frequency of cleaning the equipment and the filter screen, and saving costs; at the same time, when the slurry has viscosity and is blocked and adsorbed in the sieve hole, and the vibration effect cannot play an effective role, the telescopic rod 702 drives the slapping plate 701 to slap the filter screen tube 4, and cooperates with the through rod 703 on the slapping plate 701 to pull and insert the discharge hole 401, which is used to secondary clear the blockage of the discharge hole 401.

[0033] It is worth noting that: in the description of this utility model, the meaning of "plurality" is two or more, unless otherwise clearly specified and specifically defined. In this utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; the circuits described in this utility model are all commonly used circuits in the field, and other related components are all existing commonly used components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and is intended to encompass all variations within the meaning and scope of the claims. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

Claims

1. A lithium iron phosphate mother liquor filtering device, characterized in that: The device comprises a main body, which includes a feed cylinder and a filter cylinder installed inside the feed cylinder. A cover is installed above the feed cylinder, the cover is provided with a feed hole, a filter screen is connected below the feed hole, the filter screen is installed in the filter cylinder, and a plurality of discharge holes for pressure relief and buffering are provided on the side wall and bottom of the filter screen; A vibration device is also installed on the cover, and the vibration device includes a vibrator and a fixing frame for connecting to the filter screen tube. During the filtration process, the vibration device drives the filter screen tube to vibrate for filtering; It also includes an impact mechanism for beating the filter screen tube and clearing blockages. The impact mechanism includes several telescopic rods and a slapping plate. The telescopic rods are respectively arranged on the side walls inside the filter cylinder. One end of the telescopic rod is connected to the slapping plate and is arranged in the direction of the filter screen tube. During the filtration process, the slapping plate beats the filter screen tube to clear blockages in the discharge hole.

2. The lithium iron phosphate mother liquor filtering device according to claim 1, characterized in that: The slapping plate is provided with through rods corresponding to the discharge holes for clearing blockage of the discharge holes.

3. The lithium iron phosphate mother liquor filtering device according to claim 2, characterized in that: The diameter of the through rod is smaller than the diameter of the discharge hole.

4. The lithium iron phosphate mother liquor filtering device according to claim 3, characterized in that: The top of the through rod is made of rubber material.

5. The lithium iron phosphate mother liquor filtering device according to claim 1, characterized in that: A shock absorber is installed between the vibrator and the cover body.

6. The lithium iron phosphate mother liquor filtering device according to claim 5, characterized in that: The shock absorber is a spring shock absorber.

7. The lithium iron phosphate mother liquor filtering device according to claim 1, characterized in that: A discharge pipeline is installed at the bottom of the feed cylinder, and a discharge valve is provided on the discharge pipeline.

8. The lithium iron phosphate mother liquor filtering device according to claim 1, characterized in that: A support frame is installed below the feeding cylinder.

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