Filtering device

Abstract

The utility model provides a filtering device which belongs to the technical field of filtering and comprises a filtering shell, a titanium sintering layer and a threaded sleeve, a filtering circular groove is formed in the filtering shell, a threaded mounting hole is coaxially formed in the opening end of the filtering circular groove, and the inner diameter of the threaded mounting hole is larger than that of the filtering circular groove. A threaded mounting hole is formed in the filter shell, an annular stepped surface is formed at the bottom of the threaded mounting hole, the titanium sintering layer is located in the threaded mounting hole, the threaded sleeve is mounted in the threaded mounting hole in a threaded mode and used for pressing the titanium sintering layer on the annular stepped surface, and a liquid drainage hole is formed in the filter shell, extends into the filter shell and communicates with the bottom of the filter circular groove. According to the filtering device provided by the utility model, the filtering device does not need to be integrally replaced, the operation is simple and convenient, and the maintenance cost is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering, and more specifically relates to a filtering device. Background Art

[0002] In order to remove large particles of impurities in the mixed liquid, a filtering device with a titanium sintered layer is usually used to filter the mixed liquid, blocking the large particles of impurities outside the titanium sintered layer, and collecting the liquid passing through the titanium sintered layer.

[0003] In the prior art, the titanium sintered layer in the filter device is usually directly welded to the liquid inlet end of the shell. After a period of use, the holes of the titanium sintered layer will be blocked, and the titanium sintered layer needs to be back-blown to blow away the particles blocked in the holes of the titanium sintered layer. However, as the number of blockages increases, the back-blowing effect gradually decreases, and it is often difficult to blow away these particles. At this time, the filter device needs to be replaced as a whole, and the replacement cost is high. Utility Model Content

[0004] The utility model aims to provide a filtering device, aiming to solve the problem that the sintered titanium layer is clogged and the filtering device needs to be replaced as a whole, resulting in high replacement costs.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a filtering device, including a filter housing, a titanium sintered layer and a threaded sleeve, wherein a filter circular groove is arranged inside the filter housing, and a threaded mounting hole is coaxially arranged at the open end of the filter circular groove, and the inner diameter of the threaded mounting hole is larger than the inner diameter of the filter circular groove so as to form an annular step surface at the bottom of the threaded mounting hole, the titanium sintered layer is located in the threaded mounting hole, and the threaded sleeve is threadedly installed in the threaded mounting hole to press the titanium sintered layer against the annular step surface, and a drainage hole is opened on the filter housing, and the drainage hole extends to the interior of the filter housing and is connected to the bottom of the filter circular groove.

[0006] In a possible implementation, a first sealing ring is provided on the annular step surface, the inner diameter of the first sealing ring is larger than the inner diameter of the filtering circular groove, and the threaded sleeve presses the titanium sintered layer onto the first sealing ring.

[0007] In a possible implementation, an annular groove is opened at one end of the inner side of the threaded sleeve, the inner diameter of the annular groove is adapted to the outer diameter of the titanium sintered layer, and the depth of the annular groove is smaller than the thickness of the titanium sintered layer, and the titanium sintered layer is clamped in the annular groove.

[0008] In a possible implementation, a second sealing ring is disposed in the annular groove, an inner diameter of the second sealing ring is larger than an inner diameter of the threaded sleeve, and the titanium sintered layer is pressed between the first sealing ring and the second sealing ring.

[0009] In a possible implementation, a rotating nut is circumferentially provided on one end of the outer side of the threaded sleeve, and the rotating nut is used to drive the threaded sleeve to rotate.

[0010] In a possible implementation, a plurality of mounting holes are formed on the upper end surface of the filter housing.

[0011] In a possible implementation, a wedge-shaped guide cavity is provided inside the filter housing, the wedge-shaped guide cavity is connected to the drainage hole and the bottom of the filter circular groove respectively, and the filtering area of ​​the wedge-shaped guide cavity decreases from the filter circular groove toward the drainage hole.

[0012] In a possible implementation, the drainage hole is longitudinally opened on the upper end surface of the filter housing, and the lower end of the drainage hole is connected to the wedge-shaped guide cavity.

[0013] In a possible implementation, the drainage hole is transversely opened on a side surface of the filter housing, and an inner end of the drainage hole is connected to the wedge-shaped guide cavity.

[0014] The beneficial effect of a filter device provided by the utility model is that: compared with the prior art, a filter circular groove and a threaded mounting hole are provided inside the filter housing, an annular step surface is formed between the filter circular groove and the threaded mounting hole, a titanium sintered layer is provided on the annular step surface, a threaded sleeve is threadedly mounted in the threaded mounting hole and the titanium sintered layer is pressed onto the annular step surface, and a drainage hole extends to one end inside the filter housing and is connected to the bottom of the filter circular groove. The mixed liquid enters the filter circular groove through the titanium sintered layer, and then the filtered mixed liquid is discharged through the drainage hole. When the titanium sintered layer is clogged and difficult to clean, the threaded sleeve is unscrewed from the threaded mounting hole, the clogged titanium sintered layer is taken out, a new titanium sintered layer is replaced, and then the threaded sleeve is screwed into the threaded mounting hole, thereby realizing the separate replacement of the titanium sintered layer, without the need to replace the filter device as a whole, and the operation is simple and the maintenance cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1A schematic structural diagram of a filtering device provided in the first embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of a filtering device provided in a first embodiment of the utility model;

[0018] Figure 3 A schematic structural diagram of a filtering device provided for a second embodiment of the utility model;

[0019] Figure 4 A cross-sectional view of a filtering device provided in a second embodiment of the utility model;

[0020] Figure 5 for Figure 2 A partial enlarged view of point A in the middle.

[0021] Description of reference numerals:

[0022] 1. Filter housing; 2. Titanium sintered layer; 3. Threaded sleeve; 4. Filter circular groove; 5. Drain hole; 6. First sealing ring; 7. Second sealing ring; 8. Rotating nut; 9. Mounting hole; 10. Wedge-shaped guide cavity. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0025] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0026] See also Figures 1 to 4Now, a filter device provided by the utility model is described. A filter device includes a filter housing 1, a titanium sintered layer 2 and a threaded sleeve 3. A filter circular groove 4 is arranged inside the filter housing 1. A threaded mounting hole 9 is coaxially arranged at the open end of the filter circular groove 4. The inner diameter of the threaded mounting hole 9 is larger than the inner diameter of the filter circular groove 4 so as to form an annular step surface at the bottom of the threaded mounting hole 9. The titanium sintered layer 2 is located in the threaded mounting hole 9. The threaded sleeve 3 is threadedly mounted in the threaded mounting hole 9 to press the titanium sintered layer 2 against the annular step surface. A drainage hole 5 is opened on the filter housing 1. The drainage hole 5 extends to the interior of the filter housing 1 and is connected to the bottom of the filter circular groove 4.

[0027] The utility model provides a filter device. Compared with the prior art, the filter housing 1 is provided with a filter circular groove 4 and a threaded mounting hole 9 inside, an annular step surface is formed between the filter circular groove 4 and the threaded mounting hole 9, a titanium sintered layer 2 is provided on the annular step surface, a threaded sleeve 3 is threadedly mounted in the threaded mounting hole 9 and the titanium sintered layer 2 is pressed onto the annular step surface, and a drainage hole 5 extends to one end inside the filter housing 1 and is connected to the bottom of the filter circular groove 4. The mixed liquid enters the filter circular groove 4 through the titanium sintered layer 2, and then the filtered mixed liquid is discharged through the drainage hole 5. When the titanium sintered layer 2 is clogged and difficult to clean, the threaded sleeve 3 is unscrewed from the threaded mounting hole 9, the clogged titanium sintered layer 2 is taken out, a new titanium sintered layer 2 is replaced, and the threaded sleeve 3 is screwed into the threaded mounting hole 9, thereby realizing the separate replacement of the titanium sintered layer 2, without the need to replace the filter device as a whole, and the operation is simple and the maintenance cost is lower.

[0028] See also Figure 5 A first sealing ring 6 is arranged on the annular step surface, and the inner diameter of the first sealing ring 6 is larger than the inner diameter of the filter circular groove 4. The threaded sleeve 3 presses the titanium sintered layer 2 onto the first sealing ring 6. The first sealing ring 6 can improve the sealing performance between the titanium sintered layer 2 and the annular step surface. At the same time, the inner diameter of the first sealing ring 6 will gradually decrease when being squeezed, and finally the inner diameter of the first sealing ring 6 will approach the inner diameter of the filter circular groove 4, thereby improving the sealing effect of the first sealing ring 6 on the titanium sintered layer 2 and the annular step surface.

[0029] An annular groove is provided at one end of the inner side of the threaded sleeve 3, the inner diameter of the annular groove is matched with the outer diameter of the titanium sintered layer 2, and the depth of the annular groove is less than the thickness of the titanium sintered layer 2. The titanium sintered layer 2 is clamped in the annular groove to avoid lateral displacement of the titanium sintered layer 2 and maintain its position stability.

[0030] In addition, a second sealing ring 7 is arranged in the annular groove, and the inner diameter of the second sealing ring 7 is not larger than the inner diameter of the threaded sleeve 3, and the titanium sintered layer 2 is pressed tightly between the first sealing ring 6 and the second sealing ring 7. The second sealing ring 7 can improve the sealing performance between the titanium sintered layer 2 and the annular groove. At the same time, the inner diameter of the second sealing ring 7 will gradually decrease when it is squeezed, and finally the inner diameter of the second sealing ring 7 will approach the inner diameter of the threaded sleeve 3, thereby improving the sealing effect of the second sealing ring 7 on the titanium sintered layer 2 and the annular groove.

[0031] Preferably, a rotating nut 8 is circumferentially arranged on the outer end of the threaded sleeve 3. The rotating nut 8 is used to drive the threaded sleeve 3 to rotate. The rotating nut 8 is integrally formed on the outer end of the rotating sleeve. The rotating nut 8 has six faces, which is convenient for workers to rotate the above-mentioned threaded sleeve 3 manually or using a wrench.

[0032] Specifically, a plurality of mounting holes 9 are formed on the upper end surface of the filter housing 1 , and the filter device can be connected to a container containing the mixed liquid by means of the plurality of mounting holes 9 .

[0033] See also Figure 1 and Figure 3 A wedge-shaped flow guiding cavity 10 is provided inside the filter housing 1. The wedge-shaped flow guiding cavity 10 is connected to the drainage hole 5 and the bottom of the filter circular groove 4 respectively. The filtering area of ​​the wedge-shaped flow guiding cavity 10 decreases from the filter circular groove 4 to the drainage hole 5. The wedge-shaped flow guiding cavity 10 can guide the liquid in the filter circular groove 4 to concentrate to the drainage hole 5, and then discharge and collect through the drainage hole 5.

[0034] In the first embodiment, see Figure 1 and Figure 2 The drainage hole 5 is longitudinally opened on the upper end surface of the filter housing 1 , and the lower end of the drainage hole 5 is connected to the wedge-shaped guide cavity 10 .

[0035] In the second embodiment, see Figure 3 and Figure 4 The drainage hole 5 is transversely opened on the side of the filter housing 1 , and one end of the inner side of the drainage hole 5 is connected to the wedge-shaped guide cavity 10 .

[0036] The above two embodiments are designed for different situations and are designed to meet specific needs, so they will not be described in detail here.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device, characterized in that: The invention comprises a filter housing (1), a titanium sintered layer (2) and a threaded sleeve (3); a filter circular groove (4) is arranged inside the filter housing (1); a threaded mounting hole (9) is coaxially arranged at the open end of the filter circular groove (4); the inner diameter of the threaded mounting hole (9) is larger than the inner diameter of the filter circular groove (4) so ​​as to form an annular stepped surface at the bottom of the threaded mounting hole (9); the titanium sintered layer (2) is located in the threaded mounting hole (9); the threaded sleeve (3) is threadedly mounted in the threaded mounting hole (9) for pressing the titanium sintered layer (2) onto the annular stepped surface; a drainage hole (5) is provided on the filter housing (1); the drainage hole (5) extends to the inside of the filter housing (1) and is connected to the bottom of the filter circular groove (4).

2. A filtering device according to claim 1, characterized in that: A first sealing ring (6) is provided on the annular step surface, the inner diameter of the first sealing ring (6) being larger than the inner diameter of the filtering circular groove (4), and the threaded sleeve (3) presses the titanium sintered layer (2) onto the first sealing ring (6).

3. A filtering device according to claim 2, characterized in that: An annular groove is provided at one inner end of the threaded sleeve (3), the inner diameter of the annular groove is matched to the outer diameter of the titanium sintered layer (2), and the depth of the annular groove is less than the thickness of the titanium sintered layer (2), and the titanium sintered layer (2) is clamped in the annular groove.

4. A filtering device as claimed in claim 3, characterized in that: A second sealing ring (7) is arranged in the annular groove, the inner diameter of the second sealing ring (7) is larger than the inner diameter of the threaded sleeve (3), and the titanium sintered layer (2) is pressed tightly between the first sealing ring (6) and the second sealing ring (7).

5. A filtering device according to claim 1, characterized in that: A rotating nut (8) is circumferentially arranged at one end of the outer side of the threaded sleeve (3), and the rotating nut (8) is used to drive the threaded sleeve (3) to rotate.

6. A filtering device according to claim 1, characterized in that: The upper end surface of the filter housing (1) is provided with a plurality of mounting holes (9).

7. A filtering device according to claim 1, characterized in that: A wedge-shaped flow guide cavity (10) is provided inside the filter housing (1), the wedge-shaped flow guide cavity (10) being connected to the drainage hole (5) and the bottom of the filter circular groove (4) respectively, and the filtering area of ​​the wedge-shaped flow guide cavity (10) decreases gradually from the filter circular groove (4) toward the drainage hole (5).

8. A filtering device according to claim 7, characterized in that: The drainage hole (5) is longitudinally opened on the upper end surface of the filter housing (1), and the lower end of the drainage hole (5) is connected to the wedge-shaped flow guide cavity (10).

9. A filtering device according to claim 7, characterized in that: The drainage hole (5) is transversely opened on the side of the filter housing (1), and one inner end of the drainage hole (5) is connected to the wedge-shaped flow guide cavity (10).

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