Precision filter

Abstract

The utility model relates to the technical field of filters, and discloses a precision filter which comprises a filter body, one end of the filter body is a liquid inlet end, a first filter element and a second filter element which are arranged up and down are arranged in the filter body, and the precision filter further comprises a rotating piece which is rotatably connected in the liquid inlet end; the follow-up scraping piece comprises a gear connecting piece and a slag scraping piece, and the slag scraping piece is connected to the rotating piece through the gear connecting piece; through the arrangement of the rotating piece and the follow-up scraping piece, during use, liquid impacts a rotating plate to enable a rotating rod to rotate, then rotation of a first bevel gear is achieved, a third bevel gear in meshed connection is made to rotate, and therefore filter residues on the outer wall of the first filter element are scraped away through a scraping strip; the filter residues on the outer wall of the first filter element can be synchronously cleaned, and the filter residues are prevented from being accumulated on the outer wall of the first filter element, so that the filtering effect is effectively guaranteed, and the filtering system can continuously and stably run.

Description

Technical Field

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

[0002] In industrial production and many fields with strict requirements for liquid purity, such as the chemical, pharmaceutical, and electronics industries, the high efficiency and stability of liquid filtration technology are always the key factors to ensure the smooth progress of production and the compliance of product quality. In actual applications, traditional filters face a series of problems that need to be solved urgently.

[0003] For example, during the filtration process of existing filters, filter residues are extremely likely to adhere to the outer wall of the filter element. As time goes by, the accumulation of filter residues will gradually block the pores of the filter element, not only greatly reducing the filtration efficiency but also possibly causing an imbalance in the internal pressure of the filter. More seriously, in order to clean the filter residues, it is necessary to frequently stop the machine and disassemble the filter, which not only consumes a large amount of manpower, material resources, and time costs but also interrupts the production process, resulting in a serious loss of production efficiency. Summary of the Utility Model

[0004] The utility model provides a precision filter to solve the problems that filter residues are likely to adhere to the outer wall of the existing filter element, reducing the filtration efficiency and possibly causing an imbalance in the internal pressure of the filter.

[0005] To achieve the above object, the utility model provides the following technical solution: a precision filter, including a filter body, one end of the filter body is a liquid inlet end, and the filter body internally is provided with a first filter element and a second filter element arranged up and down, and further includes:

[0006] A rotating member rotatably connected inside the liquid inlet end;

[0007] A follower scraping member, the follower scraping member includes a gear connecting member and a slag scraping member, and the slag scraping member is connected to the rotating member through the gear connecting member to scrape the filter residues on the outer wall of the first filter element following the rotation of the rotating member when the rotating member rotates.

[0008] Preferably, the rotating member includes a rotating rod rotatably arranged inside the liquid inlet end, and a rotating plate is fixed to the outside of the rotating rod.

[0009] Preferably, the gear connecting member includes a first bevel gear and a third bevel gear meshed and connected, the first bevel gear is fixed to the outside of the rotating rod, and a connecting sleeve is also sleeved on the outside of the rotating rod, and the top end of the third bevel gear is rotatably connected to the bottom end of the connecting sleeve.

[0010] Preferably, the slag scraping member includes a connecting rod connected to the bottom end of the third bevel gear, the bottom end of the connecting rod is connected with a mounting strip, and scraping strips are connected to both ends of the mounting strip.

[0011] Preferably, a telescopic movable pressing member is connected to the scraping surface of the scraping strip.

[0012] Preferably, the movable pressing member includes a groove formed in the scraping strip, a spring is connected in the groove, a pressing rod is connected to the free end of the spring, and the outer end of the pressing rod is spherical.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] (1) Through the arrangement of the rotating member and the follower scraping member, during use, the liquid impacts the rotating plate to rotate the rotating rod, thereby realizing the rotation of the first bevel gear, causing the engaged third bevel gear to rotate, and then using the scraping strip to scrape the filter residue on the outer wall of the first filter element. In short, during the feeding process, the filter residue on the outer wall of the first filter element can be cleaned synchronously, avoiding the accumulation of filter residue on the outer wall of the first filter element, thus effectively ensuring the filtering effect and enabling the filtering system to operate continuously and stably.

[0015] (2) Through the arrangement of the movable pressing member, when the scraping strip scrapes the outer wall of the first filter element, the end of the telescopic pressing rod presses the outer wall of the first filter element, reducing the scraping gap, improving the scraping effect, and ensuring the cleanliness of the outer wall of the first filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model;

[0018] Figure 2 It is a three-dimensional view of the present utility model;

[0019] Figure 3 It is a schematic diagram of the combined state of the rotating member and the follower scraping member;

[0020] Figure 4 It is a schematic structural diagram of the gear connecting member;

[0021] Figure 5 It is a schematic structural diagram of the scraping strip;

[0022] Figure 6 It is a schematic structural diagram of the movable pressing member;

[0023] In the figure: 1. Filter body; 2. Liquid inlet end; 3. First filter element; 4. Second filter element;

[0024] 5. Rotating member; 51. Rotating rod; 52. Rotating plate;

[0025] 6. Follow-up scraping member; 61. Gear connecting member; 611. First bevel gear; 612. Connecting sleeve; 613. Third bevel gear; 62. Connecting rod; 63. Mounting strip; 64. Scraping strip;

[0026] 7. Movable pressing member; 71. Pressing rod; 72. Spring. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figures 1-6 shown, a precision filter includes a filter body 1. One end of the filter body 1 is a liquid inlet end 2. Inside the filter body 1, a first filter element 3 and a second filter element 4 are arranged up and down. The first filter element 3 is a coarse filter element, and the second filter element 4 is a precision filter element. The first filter element 3 has an external-internal flow, and the second filter element 4 has an internal-external flow (that is, the liquid to be filtered enters from the outside of the first filter element 3 into the inside, and then enters the second filter element 4 from the bottom inside, and finally the filtered liquid is discharged from the outer wall of the second filter element 4). A partition plate is provided between the first filter element 3 and the second filter element 4, so that impurities on the outer wall of the first filter element 3 will not enter the area of the second filter element 4. It also includes a rotating member 5 and a follow-up scraping member 6. The rotating member 5 is rotatably connected inside the liquid inlet end 2, and specifically, the rotating member 5 is driven to rotate by the flowing force of the introduced liquid. The follow-up scraping member 6 includes a gear connecting member 61 and a slag scraping member. The slag scraping member is connected to the rotating member 5 through the gear connecting member 61, so that when the rotating member 5 rotates, the slag scraping member follows to scrape the filter residue on the outer wall of the first filter element 3.

[0029] Among them, referring to Figure 3 shown, the rotating member 5 includes a rotating rod 51 rotatably arranged inside the liquid inlet end 2. A rotating plate 52 is fixed outside the rotating rod 51. There are multiple rotating plates 52, so that the rotating plates 52 are impacted to rotate after the liquid to be filtered enters.

[0030] Referring to Figure 3 and Figure 4 shown, the gear connecting member 61 includes a first bevel gear 611 and a third bevel gear 613 that are meshed and connected. The first bevel gear 611 is fixed outside the rotating rod 51. A connecting sleeve 612 is also sleeved outside the rotating rod 51. The top end of the third bevel gear 613 is rotatably connected to the bottom end of the connecting sleeve 612;

[0031] The slag scraping member includes a connecting rod 62 connected to the bottom end of the third bevel gear 613. The bottom end of the connecting rod 62 is connected with a mounting strip 63. Both ends of the mounting strip 63 are connected with scraping strips 64, and the scraping strips 64 are attached to the outer wall of the first filter element 3.

[0032] Through the above, during specific use, the liquid to be filtered is introduced from the liquid inlet end 2 of the filter body 1. The liquid first enters the upper section inside the filter body 1, then enters the inside of the first filter element 3 after being initially filtered by the first filter element 3, and then enters the second filter element 4 from the bottom end of the first filter element 3. After being secondary filtered by the second filter element 4, it flows out from the outer wall of the second filter element 4. Through the two - stage filtration, the filtration effect can be effectively improved.

[0033] Among them, when the liquid to be filtered is introduced into the liquid inlet end 2, it can impact the rotating rod 51 equipped with the rotating plate 52 to rotate, thereby realizing the rotation of the first bevel gear 611, causing the driven meshing - connected third bevel gear 613 to rotate, and then driving the mounting strip 63 connected to the bottom end of the connecting rod 62 to rotate. The scraping strip 64 is used to scrape the filter residue on the outer wall of the first filter element 3, so that during the feeding process, the filter residue on the outer wall of the first filter element 3 can be cleaned synchronously, avoiding the accumulation of filter residue on the outer wall of the first filter element 3, thereby effectively ensuring the filtration effect and enabling the filtration system to operate continuously and stably.

[0034] Refer to Figure 5 and Figure 6 As shown, a retractable movable pressing member 7 is connected to the scraping surface of the scraping strip 64. Among them, the movable pressing member 7 includes a groove opened on the scraping strip 64. A spring 72 is connected inside the groove, and the free end of the spring 72 is connected with a pressing rod 71. The outer end of the pressing rod 71 is spherical.

[0035] Through the above, when the scraping strip 64 scrapes the outer wall of the first filter element 3, the end of the retractable pressing rod 71 can squeeze the outer wall of the first filter element 3, reducing the gap during the scraping process, improving the scraping effect, and ensuring the cleanliness of the outer wall of the first filter element 3.

[0036] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A precision filter, comprising a filter body (1), one end of the filter body (1) being a liquid inlet end (2), and a first filter element (3) and a second filter element (4) arranged in an upper and lower manner inside the filter body (1), characterized in that: Also included are: A rotating member (5) rotatably connected to the liquid inlet end (2); A follower scraper (6), the follower scraper (6) comprising a gear connection (61) and a scraper, the scraper being connected to the rotating member (5) via the gear connection (61) so that when the rotating member (5) rotates, the scraper is used to scrape filter residues off the outer wall of the first filter element (3).

2. A precision filter according to claim 1, characterized in that: The rotating member (5) comprises a rotating rod (51) rotatably arranged in the liquid inlet end (2), and a rotating plate (52) is fixed to the outside of the rotating rod (51).

3. A precision filter according to claim 2, characterized in that: The gear connecting member (61) comprises a first bevel gear (611) and a third bevel gear (613) which are meshed and connected, the first bevel gear (611) being fixed to the outside of the rotating rod (51), the outside of the rotating rod (51) being further sleeved with a connecting sleeve (612), and the top end of the third bevel gear (613) being rotatably connected to the bottom end of the connecting sleeve (612).

4. A precision filter according to claim 3, characterized in that: The scraper comprises a connecting rod (62) connected to the bottom end of the third bevel gear (613), the bottom end of the connecting rod (62) is connected to a mounting strip (63), and both ends of the mounting strip (63) are connected to scraper strips (64).

5. A precision filter according to claim 4, characterized in that: A retractable movable pressing piece (7) is connected to the scraping surface of the scraper strip (64).

6. A precision filter according to claim 5, characterized in that: The movable pressing member (7) comprises a groove formed on the scraper strip (64), a spring (72) being connected in the groove, a pressing rod (71) being connected at the free end of the spring (72), and an outer end of the pressing rod (71) being spherical.

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