Oil filtering device for hydraulic station

Abstract

The utility model discloses an oil filtering device for a hydraulic station, which comprises a filtering device shell and a filter element arranged in the filtering device shell, and is characterized in that a first flange and a second flange are fixed at the top of the filtering device shell, a third flange is arranged at the top of the second flange, and the second flange is in threaded connection with the third flange through a first bolt; second bolts are in threaded connection with the first flange, and the first bolts and the second bolts corresponding to the first bolts in position are fixed through supporting plates. A threaded cover is fixed at the top of the filter element and is in threaded connection with the third flange; the top of the filter element is sleeved with a first sealing ring, a sealing plate is connected to the inner wall of the filtering device shell in an up-down sliding mode, and the sealing plate is connected with the first sealing ring in a clamped mode. Through the device, residual unfiltered oil at the oil inlet is prevented from entering the filtering device shell when the filter element is replaced, the influence on the purity of filtered oil in the filtering device is avoided, and meanwhile, the stable sealing performance of the oil filtering device can be kept for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil liquid filter technical field, specifically relate to a kind of hydraulic station oil liquid filter device. BACKGROUND

[0002] Hydraulic station oil liquid filter device is used to remove the impurities, moisture and other pollutants in the oil of hydraulic system.The device can ensure the oil of hydraulic system to keep clean, thereby prolonging the oil change cycle, reducing the use cost of user, and guaranteeing the normal operation of hydraulic system.

[0003] The hydraulic station oil liquid filter device on the market currently has the following problems in use:1, the traditional hydraulic station oil liquid filter device needs to replace filter element after long-term filtering operation, however, the oil inlet may remain unfiltered oil, when taking out filter element, the unfiltered oil remains enters the inside of filter device shell, resulting in incomplete oil filtration, thereby greatly reducing the filtering purity of the device.2, the surface bolt of most hydraulic station oil liquid filter devices may be loose after long-term use, resulting in the sealing of hydraulic station oil liquid filter device is reduced. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a kind of hydraulic station oil liquid filter device, the unfiltered oil remaining in oil inlet is prevented from entering the inside of filter device shell when replacing filter element by the device, to avoid affecting the purity of oil filtration in filter device, and also to ensure that oil liquid filter device maintains stable sealing for a long time.

[0005] To solve this technical problem, the utility model adopts the following technical scheme:

[0006] A kind of hydraulic station oil liquid filter device, including filter device shell, the inside of filter device shell is equipped with filter element, the filter device shell is cylindrical hollow shell, the top of filter device shell is fixed with first flange and second flange, oil inlet is set in the first flange and second flange between on filter device shell, the bottom of filter device shell is equipped with oil outlet;

[0007] The top of the second flange is equipped with third flange, and the second flange and the third flange are threadedly connected by a plurality of first bolts;The first flange is threadedly connected with a plurality of second bolts, and each first bolt and the second bolt corresponding thereto are fixed by a support plate.

[0008] The top of the filter element is fixed with a threaded cap, and the threaded cap is threadedly connected with the threaded hole in the center of the third flange.

[0009] The top of the filter core is further sleeved with a first sealing ring, and a sealing plate is slidably connected to the inner wall of the filter device shell at a position corresponding to the oil inlet.

[0010] Preferably, a sliding groove is longitudinally arranged on the left and right sides of the oil inlet on the inner wall of the filter device shell, the sealing plate is slidably connected to the corresponding sliding groove on the left and right sides, and the top of the sealing plate is provided with a flexible convex strip for clamping the first sealing ring.

[0011] Further preferably, a magnetic block is fixed to the top of the flexible convex strip, and an iron block corresponding to the position of the magnetic block is fixed to the top of the inner side of the filter device shell, and the magnetic block is magnetically attracted to the iron block.

[0012] Preferably, a first fixing sleeve is sleeved on the first bolt, a first hand screw bolt is connected to the top of the first fixing sleeve through a bearing; a second fixing sleeve is sleeved on the second bolt, a second hand screw bolt is connected to the top of the second fixing sleeve through a bearing; the support plate is in a C shape, the top of the support plate is threadedly connected to the first hand screw bolt, and the bottom of the support plate is threadedly connected to the second hand screw bolt.

[0013] Further preferably, the surfaces of the first hand screw bolt and the second hand screw bolt are uniformly provided with rectangular protrusions.

[0014] Preferably, a plurality of connecting rods are arranged between the threaded cover and the filter core.

[0015] Preferably, a cross-shaped handle is arranged on the top of the threaded cover.

[0016] Preferably, the third flange is provided with an inner recessed circular sealing groove on the bottom surface, the sealing groove is concentric with the threaded hole at the center of the third flange, the radius of the sealing groove is greater than the radius of the threaded hole at the center of the third flange, the second flange is provided with a second sealing ring corresponding to the sealing groove on the top surface, and the second sealing ring is inserted into the sealing groove.

[0017] Preferably, a circular sealing gasket is arranged on the inner wall of the central circular hole of the second flange.

[0018] The positive effects of the utility model are as follows:

[0019] Firstly, the first sealing ring drives the sealing plate to slide up and down, when the filter core is replaced (during the process of taking out the filter core), the filter core moves upwards to drive the sealing plate to slide to the top end, so that the oil inlet is blocked by the sealing plate, which prevents the unfiltered oil remaining in the oil inlet from entering the filter device shell in the case of no filter core, and avoids affecting the purity of the oil filtration in the filter device.

[0020] Second, the utility model discloses a support plate is set, and the relative fixation between the first bolt and the second bolt corresponding up and down is guaranteed, and the relative position stability of the oil filtering device can be kept for a long time up and down flange, thereby guaranteeing the sealing property of the oil filtering device whole.

[0021] Third, the utility model discloses a sealing groove is set on the third flange bottom surface, and the corresponding second sealing ring is set on the second flange top surface, and the sealing property of the cover device in the use process is further improved, and oil spill is prevented. DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the whole structure explosion drawing of the utility model;

[0024] Figure 3 It is the third flange structure reverse surface schematic diagram of the utility model;

[0025] Figure 4 It is the sealing plate structure schematic diagram of the utility model;

[0026] Figure 5 It is the support plate structure schematic diagram of the utility model.

[0027] Marking in the drawing: 1, filter device casing;2, third flange;3, screw cover;4, connecting rod;5, filter core;6, first sealing ring;7, sliding slot;8, sealing plate;9, magnetic block;10, iron block;11, second sealing ring;12, sealing groove;13, sealing gasket;14, first bolt;15, second bolt;16, support plate;17, first hand screw bolt;18, first fixed sleeve;19, second hand screw bolt;20, second fixed sleeve;21, flexible convex strip;22, handle;23, oil inlet;24, oil outlet;25, rectangular protrusion;26, second flange;27, first flange. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] For example, Figure 1 And Figure 2As shown, the utility model of filter device casing 1 is internally provided with filter core 5. The filter device casing 1 is cylindrical hollow casing, the top of filter device casing 1 is fixed with first flange 27 and second flange 26, the oil inlet 23 is set between first flange 27 and second flange 26 on filter device casing 1, and the oil outlet 24 is set at the bottom of filter device casing 1. The center hole inner wall of second flange 26 is provided with circular sealing pad 13.

[0030] The top of second flange 26 is provided with third flange 2, and second flange 26 and third flange 2 are screw-connected through four first bolts 14 on four corners. The first flange 27 is screw-connected with several second bolts 15, and each first bolt 14 and the second bolt 15 corresponding thereto are fixed through support plate 16.

[0031] The top of filter core 5 is fixed with screw cover 3, the outer side of screw cover 3 is provided with external thread, the center threaded hole of third flange 2 is provided with internal thread, and screw cover 3 is screw-connected with the center threaded hole of third flange 2. Two symmetrical connecting rods 4 are arranged between screw cover 3 and filter core 5, the height of connecting rod 4 is same with the interval between first flange 27 and second flange 26, so that after the installation of filter core 5 is completed, filter core 5 is located below oil inlet 23, and it is ensured that the oil entering from oil inlet 23 can be filtered through filter core 5 and then flow out through oil outlet 24. The top of screw cover 3 is provided with cross handle 22, which facilitates the disassembly and assembly of filter core 5.

[0032] The top of filter core 5 is further provided with first sealing ring 6, the inner wall of filter device casing 1 is slidably connected with sealing plate 8 at the position corresponding to oil inlet 23, and sealing plate 8 is clamped with first sealing ring 6.

[0033] As shown in the figure, Figure 3 The bottom surface of third flange 2 is provided with concave circular sealing groove 12, the sealing groove 12 is concentric with the threaded hole in the center of third flange 2, and the radius of sealing groove 12 is greater than the radius of the threaded hole in the center of third flange 2. The top surface of second flange 26 is provided with second sealing ring 11 corresponding to sealing groove 12, and second sealing ring 11 is inserted into sealing groove 12.

[0034] By setting sealing groove 12 on the bottom surface of third flange 2 and corresponding second sealing ring 11 on the top surface of second flange 26, the sealing property of the cover device during use is further improved, and oil leakage is prevented.

[0035] As shown in the figure, Figure 4As shown, the filter device housing 1 inner wall on both sides of the oil inlet 23 are respectively provided with a longitudinal slot 7, the sealing plate 8 both sides are respectively connected with the corresponding sliding slot 7, the sealing plate 8 top is provided with a flexible convex strip 21 for the first sealing ring 6. The flexible convex strip 21 is provided with a plurality of recesses which can be connected with the first sealing ring 6, thereby increasing the certainty of the first sealing ring 6 and the flexible convex strip 21.

[0036] The flexible convex strip 21 top is fixed with a magnetic block 9, the filter device housing 1 inner side top is fixed with a corresponding iron block 10, the magnetic block 9 and the iron block 10 are magnetically attracted.

[0037] By setting the first sealing ring 6 to drive the sealing plate 8 up and down, when replacing the filter core 5 (in the process of taking out the filter core 5), the filter core 5 moves up to drive the sealing plate 8 to slide to the top end, so that the oil inlet 23 is blocked by the sealing plate 8, preventing the residual unfiltered oil in the oil inlet 23 from entering the filter device housing 1, avoiding affecting the purity of the oil filtering in the filter device.

[0038] As shown in the figure, Figure 5 The first bolt 14 is provided with a first fixed sleeve 18, and the first fixed sleeve 18 is connected with a first hand screw bolt 17 through a bearing. The second bolt 15 is provided with a second fixed sleeve 20, and the second fixed sleeve 20 is connected with a second hand screw bolt 19 through a bearing. The support plate 16 is C-shaped, and the top of the support plate 16 is threadedly connected with the first hand screw bolt 17, and the bottom of the support plate 16 is threadedly connected with the second hand screw bolt 19. The surfaces of the first hand screw bolt 17 and the second hand screw bolt 19 are uniformly provided with rectangular protrusions 25, which are used to increase the friction, thereby facilitating operation.

[0039] By setting the support plate 16, the first bolt 14 and the second bolt 15 are relatively fixed, which ensures that the oil filtering device can keep the relative position of the upper and lower flanges stable for a long time, thereby ensuring the sealing property of the oil filtering device as a whole.

[0040] The use method of the hydraulic station oil filtering device is as follows:

[0041] The sealing groove 12 is inserted into the second sealing ring 11, the third flange 2 is fixed on the top of the second flange 26 through the first bolt 14, and the first flange 27 is installed on the target installation position of the device through the second bolt 15. Then, the operator holds the handle 22, rotates and screws the threaded cover 3 into the third flange 2, and the filter core 5 is installed in the filter device housing 1.

[0042] During the rotation of the threaded cover 3 downwards, the first sealing ring 6 clamps the flexible protrusions 21, and the magnetic block 9 is pulled away from the iron block 10, so that the sealing plate 8 moves downwards synchronously with the filter core 5, and the sealing plate 8 slides downwards on the sliding groove 7; when the threaded cover 3 is completely screwed with the third flange 2, the sealing plate 8 slides downwards to the appropriate position (the sealing plate 8 completely does not block the oil inlet 23), at this time, the valve at the oil inlet 23 is opened, so that the oil enters the filter device housing 1, and all the oil can be filtered by the filter core 5 and then discharged from the bottom oil outlet 24.

[0043] When the filter core 5 needs to be replaced, the operator holds the handle 22 to drive the threaded cover 3 to rotate upwards, the first sealing ring 6 clamps the flexible protrusions 21, so that the sealing plate 8 moves upwards synchronously with the filter core 5, and the sealing plate 8 slides upwards on the sliding groove 7; when the threaded cover 3 is completely loosened with the third flange 2, the sealing plate 8 slides upwards to the appropriate position (the sealing plate 8 completely blocks the oil inlet 23), at this time, the magnetic block 9 is magnetically attracted and fixed with the iron block 10, and the filter core 5 is taken out from the third flange 2; under the action of magnetic attraction, the sealing plate 8 still blocks the oil inlet 23, so that the unfiltered oil remaining in the oil inlet 23 does not enter the inside of the filter device housing 1 in the case of no filter core 5. Then, the new filter core 5 is reinstalled in the filter device housing 1 in the above-mentioned installation mode.

[0044] During the use of the filter device, in order to maintain the stability and airtightness of the whole, the first fixing sleeve 18 and the second fixing sleeve 20 are respectively sleeved on the top of the first bolt 14 and the second bolt 15, and then the first hand screw bolt 17 and the second hand screw bolt 19 which are threadedly connected at both ends of the support plate 16 are simultaneously tightened, so that the first fixing sleeve 18 and the second fixing sleeve 20 tightly press the first bolt 14 and the second bolt 15 respectively, to prevent the first bolt 14 and the second bolt 15 from loosening.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydraulic station oil filtering device, comprising a filtering device shell (1), the inside of the filtering device shell (1) is provided with a filter core (5), characterized in that: the filtering device shell (1) is a cylindrical hollow shell, a first flange (27) and a second flange (26) are fixed on the top of the filtering device shell (1), an oil inlet (23) is formed on the filtering device shell (1) between the first flange (27) and the second flange (26), and an oil outlet (24) is formed on the bottom of the filtering device shell (1); the top of the second flange (26) is provided with a third flange (2), the second flange (26) and the third flange (2) are threadedly connected through a plurality of first bolts (14); a plurality of second bolts (15) are threadedly connected on the first flange (27), and each first bolt (14) and the corresponding second bolt (15) are fixed through a support plate (16); the top of the filter core (5) is fixed with a threaded cover (3), and the threaded cover (3) is threadedly connected with the threaded hole in the center of the third flange (2); the top of the filter core (5) is further provided with a first sealing ring (6), and a sealing plate (8) is slidably connected on the inner wall of the filtering device shell (1) corresponding to the position of the oil inlet (23), and the sealing plate (8) is clamped with the first sealing ring (6). a sliding groove (7) is longitudinally arranged on the left and right sides of the oil inlet (23) on the inner wall of the filtering device shell (1), the two sides of the sealing plate (8) are slidably connected with the corresponding sliding grooves (7), and the top of the sealing plate (8) is provided with a flexible convex strip (21) for clamping with the first sealing ring (6).

2. The hydraulic station oil filtering device according to claim 1, characterized in that: the top of the flexible convex strip (21) is fixed with a magnetic block (9), the inner side of the filtering device shell (1) is fixed with an iron block (10) corresponding to the position of the magnetic block (9), and the magnetic block (9) is magnetically attracted to the iron block (10).

3. The hydraulic station oil filter device as claimed in claim 2, characterized in that: the first bolt (14) is provided with a first fixing sleeve (18), the top of the first fixing sleeve (18) is connected with a first hand screw bolt (17) through a bearing; the second bolt (15) is provided with a second fixing sleeve (20), the top of the second fixing sleeve (20) is connected with a second hand screw bolt (19) through a bearing; the support plate (16) is C-shaped, the top of the support plate (16) is threadedly connected with the first hand screw bolt (17), and the bottom of the support plate (16) is threadedly connected with the second hand screw bolt (19).

4. The hydraulic station oil filtering device according to claim 1, characterized in that: the surfaces of the first hand screw bolt (17) and the second hand screw bolt (19) are uniformly provided with rectangular protrusions (25).

5. The hydraulic station oil filter device according to claim 4, characterized in that: a plurality of connecting rods (4) are arranged between the threaded cover (3) and the filter core (5).

6. The hydraulic station oil filter device according to claim 1, characterized in that: the top of the threaded cover (3) is provided with a cross-shaped handle (22).

7. The hydraulic station oil filter device according to claim 1, characterized in that: ​ 8. The hydraulic station oil filter device according to claim 1, characterized in that: The bottom surface of the third flange (2) is provided with an inner concave circular sealing groove (12), the sealing groove (12) is concentric with the threaded hole in the center of the third flange (2), and the radius of the sealing groove (12) is greater than the radius of the threaded hole in the center of the third flange (2); the top surface of the second flange (26) is provided with a second sealing ring (11) corresponding to the sealing groove (12), and the second sealing ring (11) is inserted with the sealing groove (12).

9. The hydraulic station oil filter device of claim 1, wherein: The inner wall of the center circular hole of the second flange (26) is provided with a circular sealing gasket (13).

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