Oil filter for inlet oil of hydraulic servo-motor of steam turbine

Abstract

The utility model discloses a steam turbine hydraulic servo-motor oil inlet oil filter, which relates to the technical field of automobile accessories and comprises a first shell and a first filter screen, the upper portion of the first shell is mounted on the outer surface of the first filter screen in a threaded manner, and a second shell is arranged on the lower portion of the first shell. Screw rods are installed in the middles of the two sides of the first filter screen in a threaded mode, a filter element is arranged on the outer surface of the middle of the first filter screen, two second filter screens distributed in a mirror image mode are arranged on the outer surface of the first filter screen, and the side, away from the first filter screen, of the filter element makes contact with the inner walls of the second filter screens; two symmetrically-distributed fixing blocks are fixedly mounted in the middles of the opposite sides of the two second filter screens correspondingly, the two screws slidably penetrate through the middles of the fixing blocks, and the oil filtering device can be conveniently and rapidly dismounted and mounted, so that the filtering device is conveniently cleaned, and the oil filtering device can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile products, in particular to an oil inlet filter for a steam turbine oil motor. Background Art

[0002] The oil filter of the oil motor plays an important role in the system. Its main function is to filter out harmful impurities in the oil entering the oil motor, ensure the cleanliness of the oil, and thus protect the precision parts inside the oil motor from being damaged by impurities.

[0003] However, it is inconvenient to disassemble the existing oil filter to clean the internal filtering structure during use, so the oil filter must be replaced with a new one after it is blocked and cannot be reused. In addition, the baffle plate provided at the bottom to prevent the oil filter from being blocked and affecting the normal entry of the engine oil into the equipment is limited by only a single spring, which makes the structure unstable and easily allows unfiltered engine oil to enter the equipment, resulting in reduced filtering effect. Utility Model Content

[0004] In order to solve the problems that the existing oil filter is inconvenient to disassemble and clean, cannot be reused, and the baffle arranged at the bottom to prevent the oil filter from being blocked and affecting the normal entry of engine oil into the equipment is only limited by a single spring, which makes it easy for unfiltered engine oil to enter the equipment; the purpose of the utility model is to provide an oil inlet filter for a steam turbine oil motor.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: an oil inlet filter for a steam turbine oil motor, comprising a first shell and a first filter, the upper part of the first shell is threadedly installed on the outer surface of the first filter, the lower part of the first shell is provided with a second shell, screws are threadedly installed in the middle of both sides of the first filter, a filter element is provided on the middle outer surface of the first filter, and two mirror-distributed second filter screens are provided on the outer surface of the first filter, the side of the filter element away from the first filter is in contact with the inner wall of the second filter, and two symmetrically distributed fixing blocks are fixedly installed in the middle of the opposite sides of the two second filter screens, and the two screws slide through the middle of the fixed blocks.

[0006] Preferably, a first spring is fixedly installed on the lower upper surface of the second shell, a baffle is fixedly installed on the top of the first spring, the outer wall of the baffle is in contact with the inner wall of the first filter, and a plurality of second springs distributed in a circular array are fixedly installed on the lower part of the first filter, and a limiting bead is fixedly installed on the side of the plurality of second springs away from the first filter.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. The present application can facilitate the quick disassembly and installation of the oil filter device, thereby facilitating the cleaning of the filter device, and thus the oil filter device can be reused.

[0009] 2. The present application can limit the baffle plate below to prevent the oil from flowing out through the lower end of the first filter into the interior of the device when the filter device is blocked, thereby solving the problem of instability caused by the existing limitation by only a single spring, which easily causes the unfiltered oil to enter the interior of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0013] Figure 3 It is a schematic diagram of the structure after being split in the utility model.

[0014] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle.

[0015] Figure 5 This is another schematic diagram of the structure after splitting in the utility model.

[0016] Figure 6 For this utility model Figure 5 Enlarged view of point B in the middle.

[0017] Figure 7 For this utility model Figure 5 Enlarged view of point C in the middle.

[0018] Figure 8 It is a schematic diagram of the partial cross-section structure of the utility model.

[0019] Fig. 9 For this utility model Figure 8 Enlarged view of point D in the middle.

[0020] In the figure: 1. first housing; 11. fixing plate; 12. oil inlet; 13. threaded groove; 2. second housing; 21. first spring; 22. baffle; 23. limiting groove; 3. first filter screen; 31. rubber sheet; 32. screw; 321. cavity; 33. filter element; 34. second filter screen; 341. fixing block; 342. fixing groove; 35. second spring; 351. limiting bead. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Figure 1-9 As shown, the utility model provides an oil inlet filter for a steam turbine oil motor, comprising a first shell 1 and a first filter 3, wherein the upper portion of the first shell 1 is threadedly mounted on the outer surface of the first filter 3, a second shell 2 is provided at the lower portion of the first shell 1, screws 32 are threadedly mounted at the middle portions of both sides of the first filter 3, a filter element 33 is provided on the middle outer surface of the first filter 3, two mirror-distributed second filter screens 34 are provided on the outer surface of the first filter 3, a side of the filter element 33 away from the first filter 3 is in contact with the inner wall of the second filter screen 34, two symmetrically distributed fixing blocks 341 are fixedly mounted at the middle portions of the opposite sides of the two second filter screens 34, and two screws 32 slide through the middle portions of the fixing blocks 341.

[0023] A first spring 21 is fixedly installed on the upper surface of the lower part of the second shell 2, a baffle 22 is fixedly installed on the top of the first spring 21, the outer wall of the baffle 22 is in contact with the inner wall of the first filter 3, a plurality of second springs 35 distributed in a circular array are fixedly installed on the lower part of the first filter 3, and a limiting bead 351 is fixedly installed on one side of the plurality of second springs 35 away from the first filter 3.

[0024] A thread groove 13 is provided at the lower portion of the first shell 1, and the upper thread of the second shell 2 is installed inside the thread groove 13. By providing the thread groove 13, the upper thread of the second shell 2 is installed inside the thread groove 13, thereby facilitating the disassembly of the first shell 1 and the second shell 2 and thus facilitating the cleaning of the internal filtering device.

[0025] A fixing plate 11 is fixedly mounted on the upper inner wall of the first housing 1, and a rubber plate 31 is fixedly mounted on the upper outer surface of the first filter 3. The upper part of the rubber plate 31 contacts the lower surface of the fixing plate 11. By setting the fixing plate 11 and the rubber plate 31, when the engine oil enters from the oil inlet 12, the rubber plate 31 is pushed so that one end of the rubber plate 31 is no longer in contact with the fixing plate 11, that is, the engine oil can enter the interior of the filtering device. When the engine oil is not in operation, the engine oil contained in the interior flows back from the filtering device, which makes the rubber plate 31 and the fixing plate 11 fit more closely, thereby ensuring that the internal engine oil will not flow back, forming a one-way check valve effect, so that after the machine is started again, the filtered engine oil can quickly enter the interior of the equipment parts to protect the equipment.

[0026] Two symmetrically distributed cavities 321 are provided in the middle of the first filter 3, and the two screws 32 are slidably mounted inside the cavities 321. By setting the cavity 321 and slidingly installing the screws 32 inside the cavity 321, the fixing block 341 is conveniently fixed.

[0027] The outer surface of the first filter screen 3 is provided with four mirror-distributed fixing grooves 342, and the four fixing grooves 342 are mutually connected with the cavity 321. The four fixing blocks 341 are slidably clamped inside the fixing grooves 342. By setting the fixing grooves 342, the fixing blocks 341 can be inserted into the fixing grooves 342, so that the fixing blocks 341 can be fixed conveniently by the screw rod 32, so that the second filter screen 34 can be limited and fixed.

[0028] The upper part of the first shell 1 is provided with a plurality of oil inlets 12 distributed in a circular array. By setting the oil inlet 12, wherein the oil inlet 12 is interconnected with a conduit on one side of the oil pump, the extracted oil is introduced into the filtering device, the oil is filtered and then discharged into the equipment.

[0029] The central outer surface of the baffle 22 is provided with a plurality of limiting grooves 23 distributed in a circular array, and a plurality of limiting beads 351 are slidably clamped inside the limiting grooves 23. By setting the limiting grooves 23 and clamping the limiting beads 351 inside the limiting grooves 23, the baffle 22 is limited, making the baffle 22 more stable, and preventing the baffle 22 from being lifted up when the pressure is low, causing the oil containing impurities to enter the interior of the equipment.

[0030] Working principle: In actual use, the first filter screen 3 with internal threads is connected to the upstream pipeline of the oil motor, and the oil filter device is fixed to work, wherein the engine oil enters the interior of the first housing 1 through the oil inlet 12, and firstly filters the larger impurities in the middle of the engine oil through the second filter screen 34. The filtered engine oil passes through the second filter screen 34 and enters the interior of the filter element 33 for filtration. After filtering the smaller impurities, the engine oil flows out through the first filter screen 3 and reaches the middle of the first filter screen 3, and then is discharged from the pipeline connected to the first filter screen 3, so that it reaches various parts that need cooling and lubrication;

[0031] When disassembling the filter device, the first shell 1 and the second shell 2 are separated by rotating the second shell 2 so that the structure of the thread inside the thread groove 13 is withdrawn, that is, the first shell 1 and the second shell 2 are separated, and the second filter screen 34 can be preliminarily cleaned. The screw 32 can be rotated to pull the screw 32 out of the cavity 321. At this time, the screw 32 is no longer limited to the fixed block 341, and the two symmetrically distributed second filter screens 34 can be separated, that is, the second filter screen 34 is disassembled. At this time, the filter element 33 stuck between the first filter screen 3 and the second filter screen 34 can be disassembled, and the first filter screen 3, the second filter screen 34 and the filter element 33 can be cleaned;

[0032] When the filter device has not been replaced for a long time, it becomes clogged. At this time, the oil enters the filter device, causing the pressure to increase, so that the oil enters the interior of the first filter 3 from the lower hole of the first filter 3. As the thrust gradually increases, the first spring 21 extends forward, and the limiting bead 351 disengages from the interior of the limiting groove 23, causing the baffle 22 to move upward. When the side of the baffle 22 is no longer in contact with the first filter 3, the oil can flow between the baffle 22 and the first filter 3, thereby entering the pipeline and reaching various parts that require cooling and lubrication, thereby preventing the oil from being unable to enter the interior of the equipment due to blockage of the filter device, causing damage to other equipment.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A steam turbine oil motor oil inlet filter, comprising a first housing (1) and a first filter (3), characterized in that: The upper part of the first shell (1) is threadedly mounted on the outer surface of the first filter (3); the lower part of the first shell (1) is provided with a second shell (2); screw rods (32) are threadedly mounted in the middle of both sides of the first filter (3); a filter element (33) is provided on the outer surface of the middle part of the first filter (3); the outer surface of the first filter (3) is provided with two second filter screens (34) distributed in mirror image; the side of the filter element (33) away from the first filter (3) is in contact with the inner wall of the second filter screen (34); two symmetrically distributed fixing blocks (341) are fixedly mounted in the middle of the opposite sides of the two second filter screens (34); the two screw rods (32) slide through the middle of the fixing blocks (341).

2. The steam turbine oil motor oil inlet filter according to claim 1, characterized in that: A first spring (21) is fixedly mounted on the upper surface of the lower portion of the second shell (2); a baffle (22) is fixedly mounted on the top end of the first spring (21); the outer wall of the baffle (22) is in contact with the inner wall of the first filter screen (3); a plurality of second springs (35) distributed in an annular array are fixedly mounted on the lower portion of the first filter screen (3); and a limiting bead (351) is fixedly mounted on one side of the plurality of second springs (35) away from the first filter screen (3).

3. The oil inlet filter for a steam turbine oil motor as claimed in claim 1, characterized in that: The lower part of the first shell (1) is provided with a thread groove (13), and the upper part of the second shell (2) is threadably mounted inside the thread groove (13).

4. The oil inlet filter for a steam turbine oil motor as claimed in claim 1, characterized in that: A fixing plate (11) is fixedly mounted on the upper inner wall of the first shell (1), and a rubber plate (31) is fixedly mounted on the upper outer surface of the first filter screen (3), wherein the upper portion of the rubber plate (31) is in contact with the lower surface of the fixing plate (11).

5. The steam turbine oil motor oil inlet filter according to claim 1, characterized in that: Two symmetrically distributed cavities (321) are provided in the middle of the first filter screen (3), and the two screw rods (32) are slidably mounted inside the cavities (321).

6. The steam turbine oil motor oil inlet filter according to claim 1, characterized in that: The outer surface of the first filter screen (3) is provided with four mirror-distributed fixing grooves (342), the four fixing grooves (342) are mutually connected with the cavity (321), and the four fixing blocks (341) are slidably clamped inside the fixing grooves (342).

7. The oil inlet filter for a steam turbine oil motor as claimed in claim 1, characterized in that: The upper portion of the first housing (1) is provided with a plurality of oil inlets (12) distributed in a circular array.

8. The steam turbine oil motor oil inlet filter as claimed in claim 2, characterized in that: A plurality of limiting grooves (23) distributed in a circular array are provided on the middle outer surface of the baffle (22), and the plurality of limiting beads (351) are slidably clamped inside the limiting grooves (23).

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