Oil pump rough filtration framework

Abstract

The utility model discloses an oil pump rough filtration framework, which relates to the technical field of fuel oil treatment equipment, and comprises a rough filter, an oil pump is arranged on the rough filter, a filter medium is arranged on the oil pump, a framework is arranged on the filter medium, a mounting ring is arranged on the framework, a support arm structure is arranged on the mounting ring, and a bulge is arranged on the support arm structure. The filter medium is supported by the framework, the support arm structures on the mounting rings on the framework support the filter medium, so that the filter medium is prevented from being deformed, the filter effect is better, and gaps exist between the framework and the filter medium due to the bulges on the support arm structures, so that the filter effect of the coarse filter is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel processing equipment, in particular to an oil pump coarse filter skeleton. Background Art

[0002] The oil pump coarse filter is usually installed at the bottom of the oil pump. It usually uses metal mesh, nylon mesh, non-woven fabric, etc. as the filter medium to filter out large particles of impurities such as metal chips and solid debris in the fuel to prevent impurities from entering the fuel system and causing blockage, jamming, and other faults. Due to the low price of non-woven fabrics, non-woven fabrics are generally used as filter media in the current market for oil pump coarse filters. Because non-woven fabrics are soft and have low rigidity, they are easily deflated under the negative pressure generated when the oil pump is running, resulting in reduced filtration efficiency.

[0003] For example, the publication number CN203075720U disclosed a filter element with a cylindrical protruding hole on the side of the cylinder on July 24, 2013, which belongs to the technical field of oil transportation equipment in the storage and transportation process of petroleum and petrochemicals. It includes a cylindrical coarse-mesh frame, a top circular inlet, a side circular inlet, a filter screen, and a bottom plate; the upper part of the cylindrical coarse-mesh frame is connected to the top circular inlet; the inner surface of the cylindrical coarse-mesh frame is fixed with a filter screen; the bottom of the cylindrical coarse-mesh frame is connected to the bottom plate; the cylindrical coarse-mesh frame and the side circular inlet are perpendicular to each other by 90 degrees. The above-disclosed filter element has a simple structure and cannot achieve stable removal of impurities in the fuel in the oil pump, and the filtering effect is poor. Summary of the invention

[0004] The utility model aims to provide an oil pump coarse filter skeleton with better filtering effect. The utility model realizes stable filtering of the filter medium by supporting the support arm arranged on the filter medium, and the protrusion on the support arm prevents the coarse filter from being sucked and collapsed, so the filtering effect is better.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is: an oil pump coarse filter skeleton, including a coarse filter, an oil pump is provided on the coarse filter, a filter medium is provided on the oil pump, a skeleton is provided on the filter medium, a mounting ring is provided on the skeleton, a support arm structure is provided on the mounting ring, and a protrusion is provided on the support arm structure.

[0006] As a further solution of the utility model, the support arm structure includes a first support arm, a second support arm, a third support arm, a fourth support arm, a fifth support arm and a sixth support arm arranged along the circumferential direction of the mounting ring.

[0007] As a further solution of the utility model, the fourth arm and the fifth arm are connected by a first connecting arm, the first connecting arm is in an arc shape, and a first transition arm is provided on the first connecting arm.

[0008] As a further solution of the utility model, the fifth arm and the sixth arm are connected by a second connecting arm, the second connecting arm is arc-shaped, and a second transition arm is provided on the second connecting arm.

[0009] As a further solution of the utility model, the radius of the first connecting arm is the same as that of the second connecting arm, the third arm and the fourth arm are connected through the third connecting arm, and the radius of the third connecting arm is greater than that of the first connecting arm.

[0010] As a further solution of the utility model, a long protrusion is arranged at the intersection of the first connecting arm and the fourth branch arm; a large cylindrical protrusion is arranged at the intersection of the first connecting arm, the second connecting arm and the fifth branch arm; two long protrusions are arranged on the sixth branch arm; a cylindrical protrusion is arranged at the end of the first branch arm and the second branch arm respectively; two cylindrical protrusions are arranged on the third branch arm; a cylindrical protrusion is arranged on the fourth branch arm; a cylindrical protrusion is arranged in the middle part of the third connecting arm; a cylindrical protrusion is arranged at the end of each of the first transition arm; a cylindrical protrusion is arranged on the fifth branch arm; and a cylindrical protrusion is arranged at the end of each of the second transition arm.

[0011] As a further solution of the utility model, a mounting boss and a positioning boss are provided at the end of the oil pump, a mounting hole matching with the mounting boss is provided on the mounting ring, and a positioning hole matching with the positioning boss is provided on the mounting ring.

[0012] As a further solution of the utility model, the filter medium is provided with a first through hole cooperating with the positioning boss, and the filter medium is provided with a second through hole cooperating with the mounting boss.

[0013] As a further solution of the present invention, the filter medium is a non-woven fabric.

[0014] As a further solution of the utility model, the mounting hole and the mounting boss are interference fit, and the positioning boss and the positioning hole are clearance fit.

[0015] The beneficial effects of the utility model are:

[0016] The filter medium is supported by the frame, and the arm structure on the mounting ring on the frame supports the filter medium, thereby preventing the filter medium from being deformed, thereby achieving a better filtering effect, and the protrusions on the arm structure allow a gap between the frame and the filter medium, thereby further increasing the filtering effect of the coarse filter;

[0017] The first arm, the second arm, the third arm, the fourth arm, the fifth arm and the sixth arm are used to achieve contact with the filter medium, thereby achieving stable filtration with the filter medium. The installation of the skeleton on the oil pump is achieved through the cooperation between the mounting boss and the mounting hole on the mounting ring, and the positioning of the skeleton during installation is achieved through the cooperation between the positioning boss and the positioning hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the oil pump coarse filter skeleton of the utility model.

[0019] Figure 2 This is an axonometric view of the skeleton.

[0020] Figure 3 for Figure 2 Top view of the .

[0021] Figure 4 This is a schematic diagram of the connection between the oil pump coarse filter skeleton and the coarse filter.

[0022] In the attached figure: 1-frame, 101-mounting hole, 102-positioning hole, 103-mounting ring,

[0023] 103a-first arm, 103b-second arm, 103c-third arm, 103d-fourth arm, 103e-fifth arm, 103f-sixth arm, 103g-first transition arm, 103h-second transition arm, 103i-first connecting arm, 103j-second connecting arm, 103k-third connecting arm,

[0024] 2-nonwoven fabric, 201-first through hole, 202-second through hole,

[0025] 3-oil pump, 301-mounting boss, 302-positioning boss,

[0026] 4- Coarse filter. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1As shown, the oil pump coarse filter skeleton includes a coarse filter 4, an oil pump 3 is provided on the coarse filter 4, a filter medium 2 is provided on the oil pump 3, a skeleton 1 is provided on the filter medium 2, a mounting ring 103 is provided on the skeleton 1, a support arm structure is provided on the mounting ring 103, the support arm structure is in contact with the filter medium 2, and a protrusion is provided on the support arm structure. The setting of the protrusion is convenient for increasing the gap between the filter medium 2 and the support arm structure, thereby preventing the support arm structure from abutting against the filter medium to cause the filtering effect to be poor. Specifically, the mounting ring 103 is connected to the oil pump 3, thereby realizing the installation of the skeleton 1 on the oil pump.

[0030] The fuel in the oil pump 3 is filtered through the filter medium 2, and during filtering, the filter medium 2 is supported by the skeleton 1, and the arm structure on the mounting ring 103 on the skeleton 1 supports the filter medium 2, thereby preventing the filter medium 2 from deforming, thereby achieving a better filtering effect, and the protrusion on the arm structure creates a gap between the skeleton 1 and the filter medium 2, thereby further increasing the filtering effect of the coarse filter 4.

[0031] Specifically, refer to Figure 1 The arm structure includes a first arm 103a, a second arm 103b, a third arm 103c, a fourth arm 103d, a fifth arm 103e and a sixth arm 103f arranged along the circumferential direction of the mounting ring 103. The first arm 103a, the second arm 103b, the third arm 103c, the fourth arm 103d, the fifth arm 103e and the sixth arm 103f are contacted with the filter medium 2, thereby achieving stable filtration with the filter medium 2.

[0032] Further, see Figure 3 The fourth arm 103d and the fifth arm 103e are connected by a first connecting arm 103i. The first connecting arm 103i is arc-shaped. A first transition arm 103g is provided on the first connecting arm 103i to increase the supporting effect of the skeleton 1.

[0033] The fifth arm 103e and the sixth arm 103f are connected by a second connecting arm 103j. The second connecting arm 103j is in an arc shape. A second transition arm 103h is provided on the second connecting arm 103j.

[0034] The first connecting arm 103i and the second connecting arm 103j have the same radius, the third arm 103c and the fourth arm 103d are connected by the third connecting arm 103k, and the radius of the third connecting arm 103k is greater than that of the first connecting arm 103i.

[0035] A long protrusion is arranged at the intersection of the first connecting arm 103i and the fourth arm 103d; a large cylindrical protrusion is arranged at the intersection of the first connecting arm 103i, the second connecting arm 103j and the fifth arm 103e; two long protrusions are arranged on the sixth arm 103f; a cylindrical protrusion is arranged at the end of the first arm 103a and the second arm 103b respectively; two cylindrical protrusions are arranged on the third arm 103c; a cylindrical protrusion is arranged on the fourth arm 103d; a cylindrical protrusion is arranged in the middle of the third connecting arm 103k; a cylindrical protrusion is arranged at the end of the first transition arm 103g respectively; a cylindrical protrusion is arranged on the fifth arm 103e; a cylindrical protrusion is arranged at the end of the second transition arm 103h respectively, and the arrangement of the above-mentioned protrusions prevents the filter medium from collapsing during filtration.

[0036] A mounting boss 301 and a positioning boss 302 are provided at the end of the oil pump 3, a mounting hole 101 cooperating with the mounting boss 301 is provided on the mounting ring 103, and a positioning hole 102 cooperating with the positioning boss 302 is provided on the mounting ring 103. The mounting boss 301 cooperates with the mounting hole 101 on the mounting ring 203 to achieve the installation of the skeleton 1 on the oil pump 2, and the positioning boss 302 cooperates with the positioning hole 102 to achieve the positioning of the skeleton 1 during installation. In this embodiment, the positioning boss 302 is cylindrical, and four mounting bosses 301 are provided. The four mounting bosses 301 are annularly symmetrically arranged on the outside of the positioning boss 302, and in this embodiment, the positioning hole 102 is flanged upward, and the mounting hole 101 extends upward in the shape of a cylindrical protrusion, thereby ensuring the stable installation of the mounting boss 301 and the positioning boss 302.

[0037] Reference Figure 2 A first through hole 201 cooperating with the positioning boss 302 is provided on the filter medium 2, and a second through hole 202 cooperating with the mounting boss 301 is provided on the filter medium 2. The first through hole 201 and the second through hole 202 are used to achieve a stable connection of the filter medium. In this embodiment, one first through hole 201 is provided, and four second through holes 202 are provided. The four second through holes 202 are annularly symmetrically arranged on the outside of the first through hole 201.

[0038] The filter medium 2 is a non-woven fabric, thereby improving the sealing and reliability of the coarse filter assembly 4, improving production efficiency, reducing working hours, and reducing costs. The edges of the non-woven fabric are connected by ultrasonic welding.

[0039] The mounting hole 101 and the mounting boss 301 are interference fit. Specifically, the single-sided interference is set to 0.1mm-0.25mm. In this embodiment, the interference is 0.2mm, ensuring a stable connection between the mounting hole 101 and the mounting boss 301. The positioning boss 302 and the positioning hole 102 are clearance fit. Specifically, the single-sided clearance is set to 0.1mm-0.3mm. In this embodiment, the single-sided clearance is 0.2mm, thereby ensuring that the positioning boss 302 can stably perform positioning work.

[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. An oil pump coarse filter skeleton, comprising a coarse filter (4), an oil pump (3) being arranged on the coarse filter (4), a filter medium (2) being arranged on the oil pump (3), a skeleton (1) being arranged on the filter medium (2), characterized in that: The frame (1) is provided with a mounting ring (103), the mounting ring (103) is provided with a support arm structure, and the support arm structure is provided with a protrusion.

2. The oil pump coarse filter skeleton according to claim 1, characterized in that: The support arm structure comprises a first support arm (103a), a second support arm (103b), a third support arm (103c), a fourth support arm (103d), a fifth support arm (103e) and a sixth support arm (103f) which are arranged along the circumferential direction of the mounting ring (103).

3. The oil pump coarse filter skeleton according to claim 2, characterized in that: The fourth support arm (103d) and the fifth support arm (103e) are connected via a first connecting arm (103i); the first connecting arm (103i) is in an arc shape; and a first transition arm (103g) is provided on the first connecting arm (103i).

4. The oil pump coarse filter skeleton according to claim 3, characterized in that: The fifth branch arm (103e) and the sixth branch arm (103f) are connected via a second connecting arm (103j); the second connecting arm (103j) is in an arc shape; and a second transition arm (103h) is provided on the second connecting arm (103j).

5. The oil pump coarse filter skeleton according to claim 4, characterized in that: The first connecting arm (103i) and the second connecting arm (103j) have the same radius, the third arm (103c) and the fourth arm (103d) are connected via the third connecting arm (103k), and the radius of the third connecting arm (103k) is greater than the radius of the first connecting arm (103i).

6. The oil pump coarse filter skeleton according to claim 5, characterized in that: A long protrusion is arranged at the intersection of the first connecting arm (103i) and the fourth branch arm (103d); a large cylindrical protrusion is arranged at the intersection of the first connecting arm (103i), the second connecting arm (103j) and the fifth branch arm (103e); two long protrusions are arranged on the sixth branch arm (103f); a cylindrical protrusion is arranged at the end of the first branch arm (103a) and the second branch arm (103b); two cylindrical protrusions are arranged on the third branch arm (103c); a cylindrical protrusion is arranged on the fourth branch arm (103d); a cylindrical protrusion is arranged in the middle of the third connecting arm (103k); a cylindrical protrusion is arranged at the end of each of the first transition arms (103g); a cylindrical protrusion is arranged on the fifth branch arm (103e); and a cylindrical protrusion is arranged at the end of each of the second transition arms (103h).

7. The oil pump coarse filter skeleton according to any one of claims 1 to 6, characterized in that: The oil pump (3) is provided with a mounting boss (301) and a positioning boss (302) at the end thereof, the mounting ring (103) is provided with a mounting hole (101) matched with the mounting boss (301), and the mounting ring (103) is provided with a positioning hole (102) matched with the positioning boss (302).

8. The oil pump coarse filter skeleton according to claim 7, characterized in that: The filter medium (2) is provided with a first through hole (201) that cooperates with the positioning boss (302), and the filter medium (2) is provided with a second through hole (202) that cooperates with the mounting boss (301).

9. The oil pump coarse filter skeleton according to claim 8, characterized in that: The filter medium (2) is a non-woven fabric.

10. The oil pump coarse filter skeleton according to claim 7, characterized in that: The mounting hole (101) and the mounting boss (301) are interference fit, and the positioning boss (302) and the positioning hole (102) are clearance fit.

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