Large-flow beveled-opening filter screen cylinder

Abstract

The utility model provides a large-flow beveled filter screen cylinder. The large-flow beveled filter screen cylinder comprises an outer cylinder, an inner cylinder, a flange plate, an end cover and a corrugated filter element, a plurality of first via holes are evenly distributed in the surface of the outer cylinder, and a first bevel part is arranged at one end of the outer cylinder. The inner cylinder is located in the outer cylinder, a plurality of second via holes are evenly distributed in the surface of the inner cylinder, and a second bevel part corresponding to the first bevel is arranged at one end of the inner cylinder. The flange plate is fixedly connected with the first bevel part and the second bevel part, and the outer edge of the flange plate extends towards the outside of the outer cylinder. The end cover is fixedly arranged at the other end of the outer cylinder and fixedly connected with the other end of the inner cylinder, and an annular space is defined by the end cover, the outer cylinder, the inner cylinder and the flange plate. And the wave folding filter screen is wound in the annular space and is connected with the flange plate and the end cover. According to the large-flow beveled filter screen cylinder provided by the utility model, the filter area can be ensured to be increased through the wave folding filter screen arranged in the annular space, so that the flow of fluid is ensured to be improved, and the filter rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering equipment, and in particular relates to a large-flow oblique-mouth filtering net cylinder. Background Art

[0002] The oblique filter cylinder is an important component of the hydraulic filter. It mainly bears the functions of pressure bearing and filtering and is suitable for T-type filters.

[0003] In the prior art, regarding the oblique filter screen cylinder, its outer layer is usually an outer cylinder surrounded by a perforated plate, and a wire mesh is covered on the inner wall of the outer cylinder, and the liquid flows from the inside to the outside and is filtered. Although this structure is simple, the flow rate of the fluid through the filter screen is relatively small and the filtration rate is low. Utility Model Content

[0004] The embodiment of the utility model provides a large flow rate oblique filter screen cylinder, aiming to solve the problem of low filtering efficiency of the existing oblique filter screen cylinder.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: to provide a large flow oblique filter screen cylinder, including:

[0006] An outer cylinder, with a plurality of first through holes evenly distributed on the surface, and a first oblique opening portion is provided at one end of the outer cylinder;

[0007] An inner cylinder is located inside the outer cylinder, and has a plurality of second through holes evenly distributed on its surface. One end of the inner cylinder is provided with a second oblique opening corresponding to the first oblique opening;

[0008] A flange, fixedly connected to the first oblique opening portion and the second oblique opening portion, wherein an outer edge of the flange extends toward the outside of the outer tube;

[0009] An end cover is fixedly mounted on the other end of the outer cylinder and is fixedly connected to the other end of the inner cylinder. The end cover, the outer cylinder, the inner cylinder and the flange plate enclose an annular space;

[0010] The pleated filter screen is wound in the annular space and connected to the flange and the end cover.

[0011] In a possible implementation manner, the outer cylinder and the inner cylinder are coaxially arranged.

[0012] In a possible implementation, the end cover has an inner recessed portion sunken into the barrel cavity of the inner barrel, and the inner recessed portion is located at a central position of the end cover.

[0013] In a possible implementation, the outer cylinder and the inner cylinder are both formed by enclosing a perforated plate.

[0014] In a possible implementation, the large-flow oblique filter screen cylinder further includes a handle, the handle is fixed on the flange, and the handle has a crossbar portion arranged along the radial direction of the outer cylinder or the inner cylinder.

[0015] In a possible implementation, the large flow oblique filter screen cartridge further includes a pressing structure, and the pressing structure includes:

[0016] A sliding rod is coaxially arranged with the outer cylinder and is slidably connected with the sliding hole arranged on the crossbar portion, and a pull ring is arranged at one end of the sliding rod away from the flange;

[0017] A locking nut, which is sleeved on one end of the slide rod close to the flange and is threadedly connected to the external thread provided on the outer wall of the slide rod;

[0018] The spring is sleeved on the slide bar, and one end of the spring abuts against the pull ring, and the other end abuts against the cross bar.

[0019] In a possible implementation, the pull ring is provided with an annular abutting surface for the spring to abut against.

[0020] In a possible implementation, a plurality of locking nuts are provided.

[0021] In this implementation, the arrangement of the inner cylinder and the outer cylinder can enhance the pressure resistance, and the flanges arranged on the first oblique opening and the second oblique opening can ensure that they fit on the annular contact surface in the filter, thereby ensuring effective filtration. The end cover can ensure that one end of the inner cylinder cavity is shielded to ensure that impurities are received. The pleated filter located in the annular space can ensure that the filtration area is increased, thereby ensuring that the flow rate of the fluid is increased and the filtration rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the main structure of a large flow rate oblique filter screen cartridge provided by an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-sectional structure of a large flow rate oblique filter screen cartridge provided in an embodiment;

[0024] Figure 3 A schematic side view of the structure of a large flow rate oblique filter screen cartridge provided by an embodiment of the utility model;

[0025] Description of reference numerals:

[0026] 10. Outer cylinder; 20. Inner cylinder; 30. Flange; 40. End cover; 41. Inner recess; 50. Pleated filter; 60. Handle; 61. Vertical rod; 62. Horizontal rod; 70. Clamping structure; 71. Sliding rod; 72. Pull ring; 73. Locking nut; 74. Spring. DETAILED DESCRIPTION

[0027] 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.

[0028] Please also read Figure 1 and Figure 2 Now, the large flow oblique filter screen cylinder provided by the utility model is described. The large flow oblique filter screen cylinder comprises an outer cylinder 10, an inner cylinder 20, a flange 30, an end cover 40 and a pleated filter element. The surface of the outer cylinder 10 is evenly distributed with a plurality of first through holes, and one end of the outer cylinder 10 is provided with a first oblique portion. The inner cylinder 20 is located inside the outer cylinder 10, and the surface is evenly distributed with a plurality of second through holes, and one end of the inner cylinder 20 is provided with a second oblique portion corresponding to the first oblique portion. The flange 30 is fixedly connected to the first oblique portion and the second oblique portion, and the outer edge of the flange 30 extends to the outside of the outer cylinder 10. The end cover 40 is fixedly arranged at the other end of the outer cylinder 10, and is fixedly connected to the other end of the inner cylinder 20, and the end cover 40, the outer cylinder 10, the inner cylinder 20 and the flange 30 are enclosed to form an annular space. The pleated filter screen 50 is arranged around the annular space and is connected to the flange 30 and the end cover 40.

[0029] Compared with the prior art, the large flow rate oblique filter screen cylinder provided in this embodiment has an inner cylinder 20 and an outer cylinder 10 that can enhance the pressure resistance, and the flange 30 provided on the first oblique part and the second oblique part can ensure that it fits on the annular contact surface in the filter, thereby ensuring effective filtration. The end cover 40 can ensure that one end of the inner cylinder 20 is shielded to ensure that impurities are received. The pleated filter screen 50 located in the annular space can ensure that the filtration area is increased, thereby ensuring that the flow rate of the fluid is increased and the filtration rate is improved.

[0030] In some embodiments, the outer cylinder 10 and the inner cylinder 20 may be formed as follows: Figure 1 to Figure 2 See the structure shown. Figure 1 to Figure 2 The outer cylinder 10 and the inner cylinder 20 are coaxially arranged. This structure can ensure the uniform arrangement of the pleated filter element and increase the filtering area of ​​the pleated filter screen 50 to a certain extent.

[0031] In some embodiments, the end cap 40 may be formed as follows: Figure 1 See the structure shown. Figure 1The end cover 40 has an inner recess 41 sunken into the barrel cavity of the inner barrel 20 , and the inner recess 41 is located at the center of the end cover 40 .

[0032] The inner concave portion 41 can guide the flow to a certain extent, ensuring that the liquid entering the inner cylinder 20 flows radially toward the surroundings, thereby enhancing the filtering effect. In addition, the inner concave portion 41 also has a certain buffering effect, adapting to the sudden change of the flow rate of the fluid through deformation. The annular groove formed around the inner concave portion 41 can ensure the accumulation of impurities, thereby facilitating subsequent cleaning.

[0033] In some embodiments, the outer cylinder 10 and the inner cylinder 20 may be formed as follows: Figure 1 See the structure shown. Figure 1 The outer cylinder 10 and the inner cylinder 20 are both formed by enclosing a perforated plate, which can ensure the number of the first through holes and the second through holes and is easy to manufacture.

[0034] In some embodiments, see Figure 3 The large flow rate oblique filter screen cylinder also includes a handle 60, which is fixed on the flange 30 and has a crossbar 62 arranged along the radial direction of the outer cylinder 10 or the inner cylinder 20. The handle 60 can facilitate the staff to quickly take and put the combination of the outer cylinder 10, the inner cylinder 20, the flange 30, the end cover 40 and the pleated filter element in the filter, and the arrangement of the crossbar 62 can facilitate the staff to grab it by hand.

[0035] For the handle 60, see Figure 2 The handle 60 may include a vertical rod portion 61 and a horizontal rod portion 62. There are two vertical rod portions 61. The two vertical rod portions 61 are both arranged along the axial direction of the inner tube 20, and the two vertical rod portions 61 are respectively arranged on both sides of the inner tube 20 along the radial direction of the inner tube 20. The horizontal rod portion 62 is connected to the protruding ends of the two vertical rod portions 61.

[0036] In some embodiments, see Figure 1 and Figure 3 The large flow oblique filter screen cylinder also includes a clamping structure 70, which includes a slide bar 71, a locking nut 73 and a spring 74. The slide bar 71 is coaxially arranged with the outer cylinder 10 and is slidably connected with the sliding hole arranged on the cross bar portion 62. A pull ring 72 is arranged at one end of the slide bar 71 away from the flange 30. The locking nut 73 is sleeved on one end of the slide bar 71 close to the flange 30 and is threadedly connected with the external thread arranged on the outer wall of the slide bar 71. The spring 74 is sleeved on the slide bar 71, and one end abuts against the pull ring 72, and the other end abuts against the cross bar portion 62.

[0037] Regarding the contact between the flange 30 and the annular contact surface inside the filter, in order to ensure the stability of the contact, a certain pressure needs to be applied to the flange 30. In this regard, the tension spring on the slide bar 71 can contact the sealing cover provided on the filter, thereby ensuring the pressure on the flange 30. In case there is an error in the distance between the sealing cover on the filter and the flange 30, or different filter structures are different, the locking nut 73 is in contact with the lower end surface of the cross bar 62, and the spring 74 cooperates with the slide bar 71 to ensure that the distance from the pull ring 72 to the cross bar 62 is adjustable, thereby enhancing its adaptability, and being able to ensure the pressure on the flange 30, thereby ensuring the stability of the filtration.

[0038] In some embodiments, the pull ring 72 may be Figure 1 and Figure 3 See the structure shown. Figure 1 and Figure 3 The pull ring 72 is provided with an annular abutting surface for the spring 74 to abut against. The setting of the annular abutting surface can ensure stable abutment of the spring 74.

[0039] In some embodiments, the locking nut 73 may be Figure 1 and Figure 3 See the structure shown. Figure 1 and Figure 3 There are multiple locking nuts 73, and the multiple locking nuts 73 can ensure the stability of the connection with the slide rod 71 and avoid separation from the slide rod 71 due to vibration.

[0040] The above description is only a preferred embodiment of the present invention and is 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. Large flow oblique filter screen, characterized by: include: An outer cylinder, with a plurality of first through holes evenly distributed on the surface, and a first oblique opening portion is provided at one end of the outer cylinder; An inner cylinder is located inside the outer cylinder, and has a plurality of second through holes evenly distributed on its surface. One end of the inner cylinder is provided with a second oblique opening corresponding to the first oblique opening; A flange, fixedly connected to the first oblique opening portion and the second oblique opening portion, wherein an outer edge of the flange extends toward the outside of the outer tube; An end cover is fixedly mounted on the other end of the outer cylinder and is fixedly connected to the other end of the inner cylinder. The end cover, the outer cylinder, the inner cylinder and the flange plate enclose an annular space; The pleated filter screen is wound in the annular space and connected to the flange and the end cover.

2. The large flow rate oblique filter screen cartridge according to claim 1, characterized in that: The outer cylinder is coaxially arranged with the inner cylinder.

3. The large flow rate oblique filter screen cartridge according to claim 1, characterized in that: The end cover has an inner concave portion sunken into the barrel cavity of the inner barrel, and the inner concave portion is located at the center of the end cover.

4. The large flow rate oblique filter screen cartridge according to claim 1, characterized in that: The outer cylinder and the inner cylinder are both formed by enclosing perforated plates.

5. The large flow rate oblique filter screen cartridge according to any one of claims 1 to 4, characterized in that: The large flow rate oblique filter screen cylinder further comprises a handle, which is fixed on the flange plate and has a crossbar portion arranged along the radial direction of the outer cylinder or the inner cylinder.

6. The large flow rate oblique filter screen cartridge according to claim 5, characterized in that: The large flow rate oblique filter screen cartridge further includes a pressing structure, which includes: A sliding rod is coaxially arranged with the outer cylinder and is slidably connected with the sliding hole arranged on the crossbar portion, and a pull ring is arranged at one end of the sliding rod away from the flange; A locking nut, which is sleeved on one end of the slide rod close to the flange and is threadedly connected to the external thread provided on the outer wall of the slide rod; The spring is sleeved on the slide bar, and one end of the spring abuts against the pull ring, and the other end abuts against the cross bar.

7. The large flow rate oblique filter screen cartridge according to claim 6, characterized in that: The pull ring is provided with an annular abutting surface for the spring to abut against.

8. The large flow rate oblique filter screen cartridge according to claim 6, characterized in that: The locking nut is provided in plurality.

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