Basket filter

Abstract

The utility model relates to the technical field of filtering devices, in particular to a basket type filter, which comprises a barrel body, a barrel body, a filter screen, a filter screen, a filter screen, a filter screen, a filter screen and a filter screen, the barrel body is provided with a feed port and a discharge port, and the bottom of the barrel body is provided with a storage bin; the screen drum is arranged in the drum body, a first filtering space communicated with the storage bin is formed in the screen drum, first filtering holes are formed in the screen drum, and the discharging port is located in the outer side of the screen drum; the screen structure is arranged between the screen drum and the discharge port, a second filtering space communicated with the storage bin is formed between the screen drum and the screen structure, a second filtering hole is formed in the screen, and the aperture of the second filtering hole is smaller than that of the first filtering hole. The basket type filter provided by the utility model is used for overcoming the defect that the existing basket type filter cannot intercept metal non-magnetic foreign matters with smaller particle sizes, such as Cu / Zn and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a basket filter. Background Art

[0002] Basket filters are a type of filtering device that uses a basket-like filter to filter large particles and foreign matter entrained in the conveyed material. They are widely used in the fields of petroleum, food, pharmaceuticals, and new energy electrode materials. Taking the manufacturing process of lithium iron phosphate, a positive electrode material for new energy lithium-ion batteries, as an example, basket filters are widely used in the slurry conveying pipelines of lithium iron phosphate batching, grinding, and spray drying processes to effectively intercept large solid particles or foreign matter.

[0003] However, when the existing basket filter is used in the manufacturing process of lithium iron phosphate, the positive electrode material of lithium-ion batteries, it can only intercept large particles of solid or foreign matter, and cannot intercept metal non-magnetic foreign matter with smaller particle sizes such as CuZn. Utility Model Content

[0004] The utility model provides a basket filter, which is used to solve the defect that the existing basket filter cannot intercept non-magnetic metal foreign matter with smaller particle size such as Cu / Zn.

[0005] The utility model provides a basket filter, comprising:

[0006] A cylinder, wherein a feed inlet and a discharge outlet are provided on the cylinder, and a storage bin is provided at the bottom of the cylinder;

[0007] A sieve cylinder, wherein the sieve cylinder is arranged in the cylinder body, a first filtering space communicating with the material storage bin is formed in the sieve cylinder, a first filtering hole is arranged on the sieve cylinder, and the material outlet is located outside the sieve cylinder;

[0008] A screen structure is provided between the screen drum and the discharge port, a second filter space connected to the storage bin is formed between the screen drum and the screen structure, and a second filter hole is provided on the screen, and the aperture of the second filter hole is smaller than the aperture of the first filter hole.

[0009] According to the basket filter provided by the utility model, the screen structure includes a plurality of screens arranged at intervals.

[0010] According to the basket filter provided by the utility model, along the direction from the screen cylinder to the discharge port, the apertures of the second filter holes on the plurality of screens gradually decrease.

[0011] According to the basket filter provided by the utility model, the screen cylinder is provided with a slot in the vertical direction, and the screen structure is clamped in the slot.

[0012] According to the basket filter provided by the utility model, a recessed portion is provided on the screen cylinder, and the clamping grooves are respectively provided on both sides of the recessed portion.

[0013] According to the basket filter provided by the utility model, the storage bin includes a first storage space and a second storage space, the first filter space is connected to the first storage space, and the second filter space is connected to the second storage space.

[0014] According to the basket filter provided by the utility model, the screen cylinder is embedded in the cylinder body, and a first handle is provided on the top of the screen cylinder.

[0015] According to the basket filter provided by the utility model, a slag discharge port is provided at the bottom of the cylinder, and the slag discharge port is communicated with the storage bin.

[0016] The basket filter provided by the utility model further comprises a top cover, wherein the top cover is arranged on the top of the cylinder body, and a second handle is provided on the top cover.

[0017] According to the basket filter provided by the utility model, the silo wall of the storage silo is provided with an observation window.

[0018] The basket filter provided by the utility model is provided with a screen cylinder in the barrel body, and a screen structure is provided between the screen cylinder and the discharge port of the barrel body. When the feed liquid enters the first filter space from the feed port, solid impurities with larger particle sizes fall to the storage bin under the filtering effect of the first filter hole on the screen cylinder and the action of gravity, and solid impurities with smaller particle sizes (such as non-magnetic metal foreign matter such as Cu / Zn) enter the second filter space and fall to the storage bin under the filtering effect of the second filter hole on the screen structure and the action of gravity, thereby having an interception and filtration effect on solid impurities with smaller particle sizes, and reducing the number of foreign particles in the feed liquid. The basket filter provided by the utility model solves the defect that the existing basket filter cannot intercept non-magnetic metal foreign matter with smaller particle sizes such as Cu / Zn.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the basket filter provided by the utility model.

[0022] Reference numerals:

[0023] 1. Cylinder body; 2. Screen cylinder; 3. Screen structure; 4. Feed inlet; 5. Discharge outlet; 6. Storage bin; 7. Observation window; 8. First handle; 9. Slag discharge outlet; 10. Top cover; 11. Second handle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] Combine the following Figure 1 The utility model is described as a basket filter.

[0030] See also Figure 1 As shown, the basket filter provided by the embodiment of the utility model comprises a cylinder 1, a screen cylinder 2 and a screen structure 3. Among them, the cylinder 1 is provided with a feed port 4 and a discharge port 5, and a storage bin 6 is provided at the bottom of the cylinder 1; the screen cylinder 2 is arranged in the cylinder 1, and a first filtering space connected to the storage bin 6 is formed in the screen cylinder 2, and a first filtering hole is arranged on the screen cylinder 2, and the discharge port 5 is located on the outside of the screen cylinder 2; the screen structure 3 is arranged between the screen cylinder 2 and the discharge port 5, and a second filtering space connected to the storage bin 6 is formed between the screen cylinder 2 and the screen structure 3, and a second filtering hole is arranged on the screen, and the aperture of the second filtering hole is smaller than the aperture of the first filtering hole.

[0031] The basket filter provided by the utility model has a screen cylinder 2 arranged in the barrel body, and a screen structure 3 arranged between the screen cylinder 2 and the discharge port 5 of the barrel body. When the feed liquid enters the first filter space from the feed port 4, solid impurities with larger particle sizes fall to the storage bin 6 under the filtering effect of the first filter hole on the screen cylinder 2 and the action of gravity, and solid impurities with smaller particle sizes (such as non-magnetic metal foreign matter such as Cu / Zn) enter the second filter space and fall to the storage bin 6 under the filtering effect of the second filter hole on the screen structure 3 and the action of gravity, thereby having an interception and filtration effect on solid impurities with smaller particle sizes, and reducing the number of foreign particles in the feed liquid. The basket filter provided by the utility model solves the defect that the existing basket filter cannot intercept non-magnetic metal foreign matter with smaller particle sizes such as Cu / Zn.

[0032] Specifically, see Figure 1As shown, in this embodiment, the cylinder 1 is cylindrical, and accordingly, the screen cylinder 2 is also cylindrical, and the outer diameter of the screen cylinder 2 is adapted to the inner diameter of the cylinder 1, so that the screen cylinder 2 can remain stable after being installed in the cylinder 1. The feed port 4 and the discharge port 5 are respectively arranged on both sides of the cylinder 1 along the liquid flow direction. The screen cylinder 2 is evenly distributed with first filter holes with relatively large apertures, which can filter solid impurities with larger volumes while ensuring the flow rate at the inlet end. Since the cylinder 1 itself has a certain storage space, it can play a certain buffering role for the feed liquid.

[0033] In some embodiments, the cylinder 1 and the sieve cylinder 2 may also be in other shapes, such as square.

[0034] The screen structure 3 may include a single screen or multiple screens, and the screen is provided with a second filter hole with a smaller aperture. The second filter hole can filter the liquid after the preliminary filtration again, and filter out the smaller solid impurities in the liquid (such as non-magnetic metal foreign matter such as Cu / Zn), and prevent them from following the liquid flow into the downstream equipment (such as compressors, grinders, diaphragm pumps, etc.), affecting the operation of the equipment, or even causing damage to the equipment.

[0035] According to some embodiments of the present invention, the screen structure 3 includes a plurality of screens arranged at intervals. By arranging a plurality of screens at intervals, the liquid flow can be filtered multiple times, the filtering effect is improved, and some small solid impurities are prevented from entering the downstream equipment.

[0036] It should be noted that the apertures of the second filter holes of the plurality of spaced-apart sieves may be the same or different. For example, the apertures of the second filter holes of the plurality of spaced-apart sieves may be the same or may decrease gradually.

[0037] According to some embodiments of the utility model, the apertures of the second filter holes on the multiple screens gradually decrease along the direction from the screen drum 2 to the discharge port 5. Through the above arrangement of the multiple screens, solid impurities of different particle sizes in the liquid flow can be filtered and separated step by step, which can significantly improve the filtering effect and facilitate the detection and analysis of solid impurities obtained after filtering through different screens.

[0038] According to some embodiments of the utility model, the screen drum 2 is provided with a slot in the vertical direction, and the screen structure 3 is clamped in the slot. By clamping the screen structure 3 and the screen drum 2 in the vertical direction, the screen structure 3 can be easily removed for cleaning, replacement or maintenance, which is convenient for operation and installation of the screen structure 3.

[0039] Specifically, according to some embodiments of the utility model, the screen can be a screen with a certain structural strength (such as a plate screen), and the screen itself is engaged with the slot. In addition, the screen can also be a flexible screen, which is fixed by a rectangular frame, and the screen is engaged with the slot by the rectangular frame.

[0040] According to some embodiments of the utility model, a recessed portion is provided on the screen drum 2, and a clamping groove is provided on both sides of the recessed portion. By providing the recessed portion on the screen drum 2, it is possible to provide an installation space for the screen structure 3, prevent the screen structure 3 from interfering with the barrel body, and there is no need to additionally provide an installation structure for installing the screen structure 3 on the barrel body 1.

[0041] According to some embodiments of the utility model, the storage bin 6 includes a first storage space and a second storage space, the first filter space is connected to the first storage space, and the second filter space is connected to the second storage space. By dividing the storage bin 6 into the first storage space and the second storage space, the filtered solid impurities with larger volumes and the solid impurities with smaller volumes can be stored independently, which is convenient for subsequent processing. For example, when the solid impurities in the second storage space are non-magnetic metallic foreign bodies such as Cu / Zn, the above substances can be collected and detected through the second storage space.

[0042] Specifically, the first material storage space and the second material storage space are independent of each other, and partitions, partitions, etc. can be set in the material storage bin 6 to separate the material storage bin 6 into the first material storage space and the second material storage space.

[0043] According to some embodiments of the utility model, the screen drum 2 is embedded in the cylinder body 1, and a first handle 8 is provided on the top of the screen drum 2. By embedding the screen drum 2 in the cylinder body 1 and providing the first handle 8 on the top of the screen drum 2, the screen drum 2 can be easily removed for cleaning, replacement or maintenance. When disassembling, the screen drum 2 can be manually disassembled through the first handle 8 provided on the upper end of the screen drum 2, or the screen drum 2 can be lifted out of the cylinder body 1 using a lifting device.

[0044] See also Figure 1 As shown, according to some embodiments of the present invention, a slag discharge port 9 is provided at the bottom of the cylinder 1, and the slag discharge port 9 is connected to the storage bin 6. By providing the slag discharge port 9 at the bottom of the cylinder 1, the solid impurities stored in the storage bin 6 can be discharged regularly to prevent the solid impurities from accumulating.

[0045] See also Figure 1 As shown, according to some embodiments of the utility model, the basket filter further includes a top cover 10, which is disposed on the top of the cylinder 1, and a second handle 11 is disposed on the top cover 10. By providing the top cover 10 and the second handle 11 on the top cover 10, the second handle 11 makes it easier to open the top cover 10, so as to facilitate cleaning of the inside of the cylinder 1 or replacement of the filter screen, thereby maintaining the filter performance. Secondly, the top cover 10 can provide additional safety protection to prevent accidental opening or leakage.

[0046] See also Figure 1As shown, according to some embodiments of the utility model, the wall of the storage bin 6 is provided with an observation window 7. By providing the observation window 7 on the wall of the storage bin 6, it is convenient to observe the amount of solid impurities stored in the storage bin 6. When the solid impurities stored in the storage bin 6 reach a certain amount, the slag discharge port 9 can be opened to discharge them outside the cylinder 1.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A basket filter, characterized in that: include: A cylinder, wherein a feed inlet and a discharge outlet are provided on the cylinder, and a storage bin is provided at the bottom of the cylinder; A sieve cylinder, wherein the sieve cylinder is arranged in the cylinder body, a first filtering space communicating with the material storage bin is formed in the sieve cylinder, a first filtering hole is arranged on the sieve cylinder, and the material outlet is located outside the sieve cylinder; A screen structure is provided between the screen drum and the discharge port, a second filter space connected to the storage bin is formed between the screen drum and the screen structure, and a second filter hole is provided on the screen, and the aperture of the second filter hole is smaller than the aperture of the first filter hole.

2. The basket filter according to claim 1, characterized in that: The screen structure includes a plurality of screens arranged at intervals.

3. The basket filter according to claim 2, characterized in that: Along the direction from the screen drum to the discharge port, the apertures of the second filter holes on the plurality of screens gradually decrease.

4. The basket filter according to claim 1, characterized in that: The screen drum is provided with a clamping groove along the vertical direction, and the screen mesh structure is clamped in the clamping groove.

5. The basket filter according to claim 4, characterized in that: The sieve cylinder is provided with a recessed portion, and the clamping grooves are respectively provided on both sides of the recessed portion.

6. The basket filter according to claim 1, characterized in that: The material storage bin comprises a first material storage space and a second material storage space, the first filtering space is communicated with the first material storage space, and the second filtering space is communicated with the second material storage space.

7. The basket filter according to claim 1, characterized in that: The sieve cylinder is embedded in the cylinder body, and a first handle is provided on the top of the sieve cylinder.

8. The basket filter according to claim 1, characterized in that: A slag discharge port is provided at the bottom of the cylinder, and the slag discharge port is communicated with the storage bin.

9. The basket filter according to claim 1, characterized in that: It also includes a top cover, which is arranged on the top of the cylinder body and has a second handle.

10. The basket filter according to claim 1, characterized in that: The storage bin wall is provided with an observation window.

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