Plate type oil filter with linkage type filter plate structure

Abstract

The utility model discloses a plate-type oil filter with a linkage type filter plate structure, which comprises a shell, a first support and a second support are oppositely fixed in the shell, a plurality of groups of filter plates and a plurality of groups of filter paper are arranged between the first support and the second support, the plurality of groups of filter plates and the plurality of groups of filter paper are arranged at intervals, and the first support and the second support are arranged at intervals. The second support is in threaded connection with a screw, the end, close to the filter plates, of the screw is rotationally connected with a pressing plate through a rotating device, and the first support, the multiple sets of filter plates and the pressing plate are connected through hinge devices. Compared with the prior art, after the screw rod rotates, the pressing plate can be driven to be far away from the first support, and then gaps are reserved among the pressing plate, the first support and the multiple groups of filter plates through the hinge device, so that a worker can replace filter paper conveniently, the worker does not need to separate the filter plates manually, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil treatment, in particular to a plate type oil filter with a linkage filter plate structure. Background Art

[0002] Oil plays a major role in lubrication and cooling for the operation of steam turbines in thermal power plants. Therefore, the quality of oil plays an important role in the normal operation of steam turbines. The plate oil filter is one of the core equipment for oil filtration. The oil enters the plate oil filter from the oil tank, absorbs impurities and particulate matter in the oil, and then returns to the oil tank, thereby achieving a good filtering effect on the oil.

[0003] The filter paper in the plate oil filter needs to be replaced regularly, especially if there are many impurities in the oil, the replacement frequency should be increased. Otherwise, the filter paper is too dirty and clogged and not replaced in time, which may cause the plate oil filter to be full of oil. However, the oil has viscosity, and the filter plate is pressed tightly during clamping. This results in the filter plate not separating automatically when we loosen the filter plate of the plate oil filter. We need to separate the filter plate by hand, and there are many filter plates, which takes a lot of time. Utility Model Content

[0004] The main purpose of the utility model is to provide a plate type oil filter with a linkage filter plate structure. After the screw is rotated, it can drive the pressure plate away from the first support, and then through the hinge device, a gap is left between the pressure plate, the first support and multiple groups of filter plates to facilitate personnel to replace the filter paper, thereby eliminating the need for personnel to manually separate the filter plates, thereby improving efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A plate-type oil filter with a linked filter plate structure comprises a shell, in which a first support and a second support are relatively fixed, multiple groups of filter plates and multiple groups of filter papers are arranged between the first support and the second support, and the multiple groups of filter plates and multiple groups of filter papers are arranged at intervals, a screw is threadedly connected to the second support, and the end of the screw close to the filter plate is rotatably connected to a pressure plate via a rotating device, and the first support, multiple groups of filter plates and the pressure plate are connected to each other via a hinge device.

[0007] Furthermore, the hinged device includes a first flat plate and a second flat plate, the first flat plate and the second flat plate are rotatably connected via a rotating shaft, one end of the first flat plate is connected to a first support or filter plate or pressure plate adjacent thereto, and the first flat plate of one set of hinged devices in two adjacent groups is rotatably connected to the second flat plate of the other set of hinged devices.

[0008] Furthermore, a limiting plate is provided at the other end of the first flat sheet.

[0009] Furthermore, two groups of sliding rods are fixed between the first support and the second support, and the filter plate and the pressure plate are slidably connected to the sliding rods through U-shaped parts respectively.

[0010] Furthermore, the filter plate is provided with two groups of first oil holes, the filter paper is provided with two groups of second oil holes, and the filter plate and the filter paper are spaced apart to form an oil path through the first oil holes and the second oil holes.

[0011] Furthermore, it also includes an oil pump, the oil outlet of the oil pump is connected to the oil inlet of the oil circuit, a manual oil return pipe is connected to the bottom of the shell, a valve is provided on the manual oil return pipe, the oil outlet of the manual oil return pipe is connected to a primary filter, the oil inlet of the oil pump is connected to the primary filter, and the oil outlet of the oil circuit is connected to the oil outlet pipe.

[0012] Furthermore, an automatic oil return device is also provided at the bottom of the shell.

[0013] Furthermore, the automatic oil return device includes a through hole opened at the bottom of the shell and a sealing shaft inserted into the through hole, the bottom of the sealing shaft has a narrowed portion, the top of the sealing shaft is connected to a float through a ring buckle and the float is located in the shell, and the through hole is connected to the primary filter through an oil pipe.

[0014] Furthermore, a limit pin is provided at the end of the narrowing portion located in the oil pipeline.

[0015] Furthermore, the rotating device includes a rotating groove opened on the side of the pressure plate, a rotating plate is rotatably connected in the rotating groove, a positioning ring matching the rotating groove is fixed to one side of the pressure plate, and one end of the screw rod passes through the positioning ring and is fixedly connected to the rotating plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] After the screw of the utility model rotates, it can drive the pressing plate away from the first support, and then through the hinge device, a gap is left between the pressing plate, the first support and multiple groups of filter plates to facilitate personnel to replace the filter paper, thereby eliminating the need for personnel to manually separate the filter plates, thereby improving efficiency.

[0018] The filter plate and the pressure plate of the utility model are respectively slidably connected to the sliding rod through a U-shaped piece. Therefore, the movement trajectories of the filter plate and the pressure plate when they are separated and gathered are restricted, thereby avoiding misalignment of the filter plate and the pressure plate. Moreover, since the filter plate and the pressure plate are in a suspended state, the sliding rod can provide good support for the filter plate and the pressure plate through the U-shaped piece, and can avoid tilting of the filter plate when it is separated.

[0019] The float of the utility model will rise due to the increase of oil in the shell, thereby driving the sealing shaft to rise and separate from the through hole. At this time, the narrowing part cannot block the through hole. Therefore, the oil in the shell can enter the primary filter through the through hole and the oil pipe, thereby realizing automatic oil return operation and preventing oil from overflowing from the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall schematic diagram of a plate type oil filter with a linked filter plate structure according to the utility model.

[0021] Figure 2 The utility model is a schematic diagram of the structure of an articulated device of a plate type oil filter with a linked filter plate structure.

[0022] Figure 3 The utility model is a schematic diagram of the filter plate, filter paper, hinge device and oil circuit position of a plate type oil filter with a linked filter plate structure.

[0023] Figure 4 The utility model is a schematic diagram of the connection between the screw and the rotating device of a plate type oil filter with a linked filter plate structure.

[0024] Figure 5 The utility model is a schematic diagram of the oil delivery pipeline of a plate type oil filter machine with a linked filter plate structure.

[0025] Figure 6 The utility model is a schematic diagram of the filter plate structure of a plate type oil filter machine with a linked filter plate structure.

[0026] Figure 7 The utility model is a schematic diagram of the filter paper structure of a plate type oil filter with a linked filter plate structure.

[0027] Figure 8 The utility model is a schematic diagram of the connection structure between the automatic oil return device and the shell of a plate type oil filter with a linked filter plate structure.

[0028] Fig. 9 It is an exploded schematic diagram of a rotating device of a plate type oil filter with a linked filter plate structure according to the utility model.

[0029] Fig.10 The utility model is a schematic diagram of the oil circuit of a plate type oil filter with a linked filter plate structure.

[0030] Fig.11 The utility model is a schematic diagram of an automatic oil return device of a plate type oil filter machine with a linked filter plate structure.

[0031] In the figure: 1. automatic oil return device; 101. float; 102. annular buckle; 103. sealing shaft; 104. stop pin; 105. narrowing portion; 106. through hole; 2. rotating device; 201. rotating groove; 202. rotating plate; 203. positioning ring; 3. pressing plate; 4. filter plate; 5. filter paper; 6. sliding rod; 7. hinge device; 701. second flat plate; 702. first flat plate; 703. rotating shaft; 705. stop plate; 8. second support; 9. screw; 10. U-shaped part; 11. shell cover; 12. oil circuit; 13. first oil hole; 14. second oil hole; 15. oil pump; 16. primary filter; 17. shell; 18. manual oil return pipe; 19. valve; 20. oil pipeline; 21. first support; 22. oil outlet pipe. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figure 1-11 As shown, a plate-type oil filter with a linked filter plate structure includes a shell 17, in which a first support 21 and a second support 8 are relatively fixed, a plurality of groups of filter plates 4 and a plurality of groups of filter papers 5 are arranged between the first support 21 and the second support 8, and the plurality of groups of filter plates 4 and the plurality of groups of filter papers 5 are arranged at intervals, a screw 9 is threadedly connected to the second support 8, and the end of the screw 9 close to the filter plate 4 is rotatably connected to the pressing plate 3 through a rotating device 2, the first support 21, the plurality of groups of filter plates 4 and the pressing plate 3 are connected to each other through a hinge device 7, and the hinge device 7 is respectively arranged on both sides of the first support 21, the plurality of groups of filter plates 4 and the pressing plate 3, and the top of the shell 17 has an opening and is provided with a shell cover 11.

[0034] In this embodiment, if Figure 1 As shown, multiple groups of filter plates 4 and multiple groups of filter papers 5 are clamped and fixed under the action of the first support 21 and the pressure plate 3. When the filter paper 5 needs to be replaced, the personnel can rotate the screw 9 to drive the pressure plate 3 away from the first support 21, and then through the hinge device 7, a gap is left between the pressure plate 3, the first support 21 and the multiple groups of filter plates 4 to facilitate the personnel to replace the filter paper 5. After the filter paper 5 is replaced, the personnel rotates the screw 9 in the opposite direction, so that the pressure plate 3, the first support 21 and the multiple groups of filter plates 4 are again in close contact with each other through the hinge device 7 to clamp the filter paper 5.

[0035] Among them, Figure 2As shown, the hinge device 7 includes a first flat plate 702 and a second flat plate 701, the first flat plate 702 and the second flat plate 701 are rotatably connected via a rotating shaft 703, one end of the first flat plate 702 is connected to the adjacent first support 21 or filter plate 4 or pressing plate 3, and the first flat plate 702 of one set of hinge devices 7 in two adjacent groups is rotatably connected to the second flat plate 701 of the other set of hinge devices 7;

[0036] Therefore, when the pressing plate 3, the first support 21 and the multiple groups of filter plates 4 connected by the multiple hinge devices 7 move due to the force of the screw 9, the multiple groups of filter plates 4 will also move with the pressing plate 3, thereby leaving gaps between the filter plates 4. Since the first support 21 is fixed, the positions of the multiple groups of filter plates 4 will not change after they are reset.

[0037] Among them, a limiting plate 705 is set at the other end of the first flat plate 702. When multiple groups of filter plates 4 are separated, the angle between the first flat plate 702 and the second flat plate 701 will increase. When the secondary angle increases to a specified angle, the second flat plate 701 will contact the limiting plate 705, thereby preventing the angle between the first flat plate 702 and the second flat plate 701 from continuing to increase. This effect is used to control the gap between two adjacent filter plates 4 to avoid the gap being too large.

[0038] Among them, Figure 1 and Figure 6 As shown, two groups of sliding rods 6 are fixed between the first support 21 and the second support 8, and two groups of U-shaped parts 10 are respectively arranged on the pressure plate 3 and each group of filter plates 4. The filter plate 4 and the pressure plate 3 are respectively slidably connected to the sliding rods 6 through the U-shaped parts 10. Therefore, the movement trajectories of the filter plate 4 and the pressure plate 3 when separating and gathering are restricted to avoid misalignment of the filter plate 4 and the pressure plate 3. Moreover, since the filter plate 4 and the pressure plate 3 are in a suspended state, the sliding rod 6 can provide good support for the filter plate 4 and the pressure plate 3 through the U-shaped parts 10, and reduce the gravity carried by the hinge device 7.

[0039] Among them, Figure 2 , Figure 6 , Figure 7 and Fig. 9 As shown, the filter plate 4 is provided with two groups of first oil holes 13, and the filter paper 5 is provided with two groups of second oil holes 14. The filter plate 4 and the filter paper 5 are arranged at intervals to form an oil path 12 through the first oil holes 13 and the second oil holes 14. This part is the prior art and will not be described in detail here. Figure 5 As shown, it also includes an oil pump 15, the oil outlet of the oil pump 15 is connected to the oil inlet of the oil circuit 12, a manual oil return pipe 18 is connected to the bottom of the housing 17, a valve 19 is provided on the manual oil return pipe 18, the oil outlet of the manual oil return pipe 18 is connected to the primary filter 16, the oil inlet of the oil pump 15 is connected to the primary filter 16, and the oil outlet of the oil circuit 12 is connected to the oil outlet pipe 22;

[0040] When filtering the oil, the oil of the turbine first enters the primary filter 16 (the primary filter 16 is a prior art and will not be described in detail here), and then the oil pump 15 transports the oil in the primary filter 16 to the interior of the shell 17 through the oil inlet of the oil circuit 12, so that the oil is filtered by the filter paper 5 to remove impurities, and the filtered oil will enter the oil outlet pipe 22 through the oil outlet of the oil circuit 12, and enter the turbine again through the oil outlet pipe 22. During this process, if there is more oil left in the shell 17, the valve 19 is opened to allow the oil in the shell 17 to enter the primary filter 16 through the manual oil return pipe 18 to prevent the oil from overflowing from the shell 17.

[0041] Among them, Figure 5 As shown, an automatic oil return device 1 is also provided at the bottom of the housing 17. Figure 8 As shown, the automatic oil return device 1 includes a through hole 106 opened at the bottom of the housing 17 and a sealing shaft 103 inserted into the through hole 106. The bottom of the sealing shaft 103 has a narrowing portion 105. The top of the sealing shaft 103 is connected to a floating ball 101 through a ring buckle 102, and the floating ball 101 is located in the housing 17. The through hole 106 is connected to the primary filter 16 through the oil delivery pipe 20.

[0042] Under normal circumstances, there is less oil in the shell 17 and the float 101 cannot float. Therefore, the sealing shaft 103 will be inserted into the through hole 106 to block the through hole 106. When the oil in the shell 17 increases, the float 101 will rise due to buoyancy, thereby driving the sealing shaft 103 to rise and disengage from the through hole 106. At this time, the narrowing portion 105 cannot block the through hole 106. Therefore, the oil in the shell 17 can enter the primary filter 16 through the through hole 106 and the oil pipe 20, thereby realizing automatic oil return operation. Moreover, when the oil height in the shell 17 is normal, the personnel should manually insert the sealing shaft 103 into the through hole 106 again for subsequent use.

[0043] Among them, Figure 8 As shown, a limit pin 104 is provided at the end of the narrowing portion 105 located in the oil pipe 20, and the limit pin 104 cannot pass through the through hole 106. Therefore, the narrowing portion 105 can be prevented from completely separating from the through hole 106, so that personnel can find the sealing shaft 103 later.

[0044] like Fig. 9 As shown, the rotating device 2 includes a rotating groove 201 opened on the side of the pressing plate 3, a rotating plate 202 is rotatably connected in the rotating groove 201, a positioning ring 203 matching the rotating groove 201 is fixed on one side of the pressing plate 3, and one end of the screw rod 9 passes through the positioning ring 203 and is fixedly connected to the rotating plate 202;

[0045] The positioning ring 203 is fixed to the pressing plate 3 by bolts, thereby limiting the rotating plate 202 in the rotating groove 201. Therefore, when the screw rod 9 rotates, it can rotate relative to the pressing plate 3 and can make the pressing plate 3 move accordingly.

[0046] Working principle, first, the oil of the steam turbine enters the primary filter 16, and then the oil pump 15 transports the oil in the primary filter 16 to the inside of the shell 17 through the oil inlet of the oil circuit 12, so that the oil is filtered by the filter paper 5 to remove impurities, and the filtered oil will enter the oil outlet pipe 22 through the oil outlet of the oil circuit 12, and enter the steam turbine again through the oil outlet pipe 22. In this process, if there is more oil left in the shell 17, open the valve 19, so that the oil in the shell 17 enters the primary filter 16 through the manual oil return pipe 18 to prevent the oil from overflowing from the shell 17. When the personnel fail to open the valve 19 in time, the float 101 will rise due to the increase of oil in the shell 17, thereby driving the sealing shaft 103 rises and disengages from the through hole 106. At this time, the narrowed portion 105 cannot block the through hole 106. Therefore, the oil in the shell 17 can enter the primary filter 16 through the through hole 106 and the oil pipe 20, thereby realizing automatic oil return operation. In the next step, when the filter paper 5 needs to be replaced, the personnel can rotate the screw 9 to drive the pressure plate 3 away from the first support 21, and then use the hinge device 7 to leave gaps between the pressure plate 3, the first support 21 and the multiple groups of filter plates 4 to facilitate personnel to replace the filter paper 5. After the filter paper 5 is replaced, the personnel rotates the screw 9 in the opposite direction, so that the pressure plate 3, the first support 21 and the multiple groups of filter plates 4 are again in close contact with each other through the hinge device 7 to clamp the filter paper 5.

[0047] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A plate-type oil filter having a linked filter plate structure, comprising a housing (17), wherein a first support (21) and a second support (8) are relatively fixed in the housing (17), a plurality of groups of filter plates (4) and a plurality of groups of filter papers (5) are arranged between the first support (21) and the second support (8), and the plurality of groups of filter plates (4) and the plurality of groups of filter papers (5) are arranged at intervals, characterized in that: A screw rod (9) is threadedly connected to the second support (8); the end of the screw rod (9) close to the filter plate (4) is rotatably connected to the pressure plate (3) via a rotating device (2); and the first support (21), the plurality of groups of filter plates (4) and the pressure plate (3) are connected to each other via a hinge device (7).

2. The plate type oil filter with a linked filter plate structure according to claim 1, characterized in that: The hinge device (7) comprises a first flat plate (702) and a second flat plate (701); the first flat plate (702) and the second flat plate (701) are rotatably connected via a rotating shaft (703); one end of the first flat plate (702) is connected to a first support (21) or a filter plate (4) or a pressure plate (3) adjacent thereto; and the first flat plate (702) of one set of hinge devices (7) in two adjacent sets is rotatably connected to the second flat plate (701) of the other set of hinge devices (7).

3. The plate type oil filter with a linked filter plate structure according to claim 2, characterized in that: A limiting plate (705) is provided at the other end of the first flat sheet (702).

4. The plate type oil filter with a linked filter plate structure according to claim 1, characterized in that: Two groups of sliding rods (6) are also fixed between the first support (21) and the second support (8), and the filter plate (4) and the pressure plate (3) are respectively slidably connected to the sliding rods (6) via U-shaped parts (10).

5. The plate type oil filter with a linked filter plate structure according to claim 1, characterized in that: The filter plate (4) is provided with two groups of first oil holes (13), the filter paper (5) is provided with two groups of second oil holes (14), and the filter plate (4) and the filter paper (5) are arranged at intervals to form an oil path (12) through the first oil holes (13) and the second oil holes (14).

6. The plate type oil filter with a linked filter plate structure according to claim 5, characterized in that: It also comprises an oil pump (15), the oil outlet of the oil pump (15) being in communication with the oil inlet of the oil circuit (12), the bottom of the housing (17) being connected with a manual oil return pipe (18), the manual oil return pipe (18) being provided with a valve (19), the oil outlet of the manual oil return pipe (18) being connected with a primary filter (16), the oil inlet of the oil pump (15) being connected with the primary filter (16), and the oil outlet of the oil circuit (12) being connected with an oil outlet pipe (22).

7. The plate type oil filter with a linked filter plate structure according to claim 6, characterized in that: An automatic oil return device (1) is also provided at the bottom of the housing (17).

8. The plate type oil filter with a linked filter plate structure according to claim 7, characterized in that: The automatic oil return device (1) comprises a through hole (106) opened at the bottom of a housing (17) and a sealing shaft (103) inserted into the through hole (106); the bottom of the sealing shaft (103) has a narrowing portion (105); the top of the sealing shaft (103) is connected to a floating ball (101) via an annular buckle (102), and the floating ball (101) is located in the housing (17); the through hole (106) is connected to a primary filter (16) via an oil delivery pipe (20).

9. The plate type oil filter with a linked filter plate structure according to claim 8, characterized in that: A limiting pin (104) is provided at the end of the narrowing portion (105) located inside the oil delivery pipe (20).

10. The plate type oil filter with a linked filter plate structure according to claim 1, characterized in that: The rotating device (2) comprises a rotating groove (201) formed on a side of the pressure plate (3), a rotating plate (202) being rotatably connected in the rotating groove (201), a positioning ring (203) matching the rotating groove (201) being fixed on one side of the pressure plate (3), and one end of the screw rod (9) passing through the positioning ring (203) and being fixedly connected to the rotating plate (202).

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