Residue filtering device and filter cartridge online replacement method

Abstract

The present application relates to the technical field of residual oil filtration, and particularly relates to a residual oil filtration device and a filter core online replacement method, the device comprising: a primary distributor, the primary distributor having a chamber for residual oil flow inside, the primary distributor being provided with an oil inlet pipe in communication with the internal chamber; a secondary distributor, the secondary distributor being arranged opposite to the primary distributor, the secondary distributor being provided with an oil outlet pipe in communication with the internal chamber; at least two filtering mechanisms, one end of the filtering mechanism being in communication with the primary distributor, the other end of the filtering mechanism being in communication with the secondary distributor; the filtering mechanism comprising an assembly cylinder, a filter core detachably mounted in the assembly cylinder, and an upper cover detachably connected with the assembly cylinder; wherein the bottom of the assembly cylinder is further provided with a blocking mechanism, the secondary distributor being connected with a booster set for pumping filtered oil, the primary distributor being in communication with a residual oil pipeline, and the blocking mechanism being configured to block the oil inlet passage of the assembly cylinder when the filter core needs to be replaced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of residual oil filtering, in particular to a residual oil filtering device and a filter core online replacement method. BACKGROUND

[0002] Residual oil is residual oil obtained by vacuum distillation of crude oil, also known as vacuum residual oil. Residual oil is often used to process petroleum coke, residual lubricating oil, petroleum pitch and other products. However, residual oil contains a large amount of particles and other impurities, so it needs to be filtered before processing.

[0003] Regarding the filtering of residual oil, a residual oil filtering device is disclosed in Chinese Utility Model Patent No. CN206566577U, which is published on October 20, 2017. The device is provided with a filter inner tube with filter holes in the cylinder of the filter. After the residual oil enters the cylinder of the filter, the impurities are blocked by the filter holes on the filter inner tube, and the pure oil flows out of the inner tube, realizing the filtering of the residual oil.

[0004] However, the inventor found that the above-mentioned filtering device needs to stop the whole equipment when replacing the filter inner tube, thereby reducing the efficiency of residual oil filtering. SUMMARY

[0005] In view of at least one of the above technical problems, the present application provides a residual oil filtering device and a filter core online replacement method, which realizes the online replacement of the filter core by improving the structure.

[0006] According to a first aspect of the present application, a residual oil filtering device is provided, comprising:

[0007] A primary distributor has a chamber for residual oil flow inside, and an oil inlet pipe on the primary distributor is in communication with the internal chamber;

[0008] A secondary distributor is arranged in opposite intervals with the primary distributor, and an oil outlet pipe on the secondary distributor is in communication with the internal chamber;

[0009] At least two filtering mechanisms, one end of the filtering mechanism is in communication with the primary distributor, and the other end is in communication with the secondary distributor;

[0010] The filtering mechanism includes an assembly cylinder, a filter core detachably mounted in the assembly cylinder, and an upper cover detachably connected with the assembly cylinder;

[0011] The bottom of the assembly cylinder also has a blocking mechanism, a booster set for pumping filtered oil is connected to the secondary distributor, the primary distributor is in communication with the residual oil pipeline, and the blocking mechanism is configured to block the oil inlet passage of the assembly cylinder when the filter core needs to be replaced.

[0012] In some embodiments of the present application, the blocking mechanism comprises at least two flaps which are radially slidable arranged at the bottom of the assembly cylinder, and the flaps are configured to be combined into a whole circular shape when being docked to cover the oil inlet of the assembly cylinder, and the flaps are radially away from each other to open the oil inlet.

[0013] In some embodiments of the present application, the blocking mechanism further comprises a driving member fixed on the inner wall of the assembly cylinder, and a transmission plate connected to the driving end of the driving member, the cross section of the transmission plate is L-shaped, and the flaps are connected to the bottom end of the transmission plate, and the transmission plate is configured to be not in contact with the filter element when the flaps are combined.

[0014] In some embodiments of the present application, a slide rod is further fixed on the flaps and slidably connected to the bottom end of the transmission plate in the vertical direction, and a compression spring is sleeved on the slide rod, and the compression spring is used to keep the flaps in contact with the bottom wall of the assembly cylinder.

[0015] In some embodiments of the present application, the side wall of the transmission plate has a hollow frame, and the hollow frame is arranged at the position of the immersed residual oil.

[0016] In some embodiments of the present application, the assembly cylinder further has an annular stepped groove, and the filter element has a mounting flange matched with the annular stepped groove, and a handle is fixed on the mounting flange.

[0017] In some embodiments of the present application, the upper cover is communicated with an oil feeding pipe, the front end of the oil feeding pipe has a bellows, the bellows is sleeved with a positioning sleeve, and the positioning sleeve has a positioning bolt abutting against the outer wall of the oil feeding pipe.

[0018] In some embodiments of the present application, the top of the primary distributor and the secondary distributor is detachably connected with a cover plate.

[0019] In some embodiments of the present application, the bottom of the primary distributor is connected with a blowdown pipe, and the bottom of the secondary distributor is connected with a backflush pipe.

[0020] According to the second aspect of the present application, a filter element online replacement method of the residual oil filtering device is also provided, comprising the following steps:

[0021] The driving member drives the transmission plate to make the flaps close to each other to the closed state;

[0022] Continue to drive the supercharger set to suck the filtered oil in the assembly cylinder and discharge;

[0023] Open the upper cover connected to the assembly cylinder, and temporarily fix the upper cover by using the positioning sleeve and the positioning bolt;

[0024] Remove the filter element from the assembly cylinder and replace it with a new filter element;

[0025] Release the temporary fixation of the top cover and fix it to the assembly cylinder;

[0026] The control drive unit moves the transmission plate to make the baffles move away from each other, thus restoring the filtration of residual oil.

[0027] The beneficial effects of this invention are as follows: By setting up a multi-channel filtration mechanism between the primary distributor and the secondary distributor, this invention enables multiple filtration mechanisms to work online simultaneously, thereby improving filtration efficiency. Furthermore, by setting a blocking mechanism in the assembly cylinder of each filtration mechanism, when the filter element needs to be replaced, the blocking mechanism blocks the oil inlet passage of the assembly cylinder that needs to be replaced. With the increased suction of the unit, online filter element replacement of the filtration mechanism can be achieved. Compared with the prior art, this improves the filtration efficiency of residual oil. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the residual oil filtration device in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the residual oil filtration device and the online filter element replacement method in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the filtration mechanism in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the filtration principle of the filtration mechanism in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the barrier mechanism in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the drive mechanism for the baffle in an embodiment of the present invention;

[0035] Figure 7 This is an exploded structural diagram of the filtration mechanism from another perspective in an embodiment of the present invention;

[0036] Figure 8 As described in the embodiments of the present invention Figure 7 Enlarged view of section A in the image;

[0037] Figure 9 Structure diagram of the filtering mechanism in the embodiment of the present application;

[0038] Figure 10 Structure diagram of the residual oil filtering device in the embodiment of the present application;

[0039] Figure 11 Step flow chart of the filter core online replacement method of the residual oil filtering device in the embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0041] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to be limiting.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] As shown in Figures 1 to 10 The residual oil filtering device shown in

[0044] As shown in Figure 1 The primary distributor 1 has a chamber for residual oil flow inside, and the primary distributor 1 has an oil inlet pipe 11 communicating with the internal chamber; in the embodiment of the present application, the oil inlet pipe 11 on the primary distributor 1 is used to be connected with a residual oil pipeline, and after the residual oil enters into the primary distributor 1, it enters into each filtering mechanism 3 connected with the primary distributor 1 for filtering; in the embodiment of the present application, as shown in Figure 1 The filtering mechanism 3 is provided with a plurality of filtering mechanisms, and the bottom of the filtering mechanism 3 is connected with the primary distributor 1, so that the residual oil entering into the primary distributor 1 enters into each filtering mechanism 3 for filtering;

[0045] Please continue to refer to Figure 1In the embodiment of the present application, the secondary distributor 2 is arranged opposite to the primary distributor 1, and the secondary distributor 2 is provided with an oil outlet pipe 21 communicating with the inner chamber; it is to be noted that the primary distributor 1 and the secondary distributor 2 can be fixed by the form of a support, and of course, the primary distributor 1 and the secondary distributor 2 can be fixed by other ways according to the needs of the person skilled in the art, and the secondary distributor 2 is connected with the other end of the filtering mechanism 3, so that the filtered oil after passing through the filtering mechanism 3 enters the secondary distributor 2 and then flows out from the oil outlet pipe 21; in the embodiment of the present application, the oil outlet pipe 21 of the secondary distributor 2 is connected with a booster set 6, and the booster set 6 provides power for filtering, and the oil in the filtering mechanism 3 enters the secondary distributor 2 by suction.

[0046] As shown in Figures 1 to 3 In the embodiment of the present application, the filtering mechanism 3 is provided with at least two paths, one end of the filtering mechanism 3 communicates with the primary distributor 1, and the other end communicates with the secondary distributor 2; further, the filtering mechanism 3 comprises an assembly cylinder 31, a filter core 32 detachably mounted in the assembly cylinder 31, and an upper cover 33 detachably connected with the assembly cylinder 31; as shown in Figure 3 The residue oil entering the assembly cylinder 31 submerges the bottom part of the filter core 32, and due to the small holes on the filter core 32 for filtering impurities, only clean filtered oil is allowed to pass through, and the particles with large particle size are blocked outside the filter core 32; since the residue oil entering the assembly cylinder 31 contains a lot of impurities, if a valve is arranged on the pipeline connected with the bottom of the assembly cylinder 31, the valve is easy to be damaged by the impurities, so the valve cannot be arranged at the bottom of the assembly cylinder 31, in order to facilitate online replacement when the filter core 32 needs to be replaced, as shown in Figure 3 The bottom of the assembly cylinder 31 is also provided with a blocking mechanism 4, which is configured to block the oil inlet passage of the assembly cylinder 31 when the filter core 32 needs to be replaced. By blocking the oil inlet 31a at the bottom of the assembly cylinder 31 when the filter core 32 needs to be replaced, due to the continuous operation of the booster set 6 connected with the secondary distributor 2, the part of the residue oil submerging the filter core 32 which is filtered of impurities will continue to be sucked into the secondary distributor 2, and when the residue oil in the assembly cylinder 31 is filtered, the upper cover 33 can be opened, the filter core 32 can be taken out and replaced with a new filter core 32; it is to be noted that due to the negative pressure generated by the secondary distributor 2, there will be no leakage at the upper cover 33, and of course, the person skilled in the art can also arrange an electromagnetic valve on the pipeline communicating with the upper cover 33, since the filtered residue oil is relatively pure, the arrangement of the electromagnetic valve can improve the working efficiency of the secondary distributor 2 and reduce the intake of air.

[0047] Through the above setting, since the multi-path filtering mechanism 3 cooperates with the setting of the blocking mechanism 4, the online replacement of the filter element 32 of the filtering mechanism 3 is realized, compared with the replacement mode of the prior art which needs to stop, the filtering efficiency of the residual oil filtering device is improved; in addition, it should be pointed out here that the blocking mechanism 4 has multiple forms, for example, the opening or closing of the oil inlet 31a at the bottom of the assembly cylinder 31 can be realized by rotating a hinged baffle at the horizontal direction, or the opening and closing of the oil inlet 31a can be realized by the plug seat lifting form, etc., and the person skilled in the art can set it according to the needs.

[0048] In the above embodiment, by setting the multi-path filtering mechanism 3 between the primary distributor 1 and the secondary distributor 2, the multi-path filtering mechanism 3 works online at the same time, the filtering efficiency is improved, and by setting the blocking mechanism 4 in the assembly cylinder 31 of each filtering mechanism 3, when the filter element 32 needs to be replaced, the blocking mechanism 4 blocks the oil inlet passage of the assembly cylinder 31 which needs to replace the filter element 32, under the suction of the increased unit, the online filter element 32 replacement of the filtering mechanism 3 is realized, compared with the prior art, the filtering efficiency of the residual oil is improved.

[0049] Regarding the blocking mechanism 4, in some embodiments of the present application, as shown in Figure 4 , the blocking mechanism 4 includes at least two radially slidable baffle plates 41 arranged at the bottom of the assembly cylinder 31, the baffle plates 41 are configured to be combined into a whole circular shape covering the oil inlet 31a at the bottom of the assembly cylinder 31 when they are docked, and the oil inlet 31a is opened when the baffle plates 41 are away from each other in the radial direction. Through this form of setting, the movement amplitude of the baffle plates 41 can be reduced, so that the oil inlet 31a at the bottom of the assembly cylinder 31 can be opened to a larger size when the baffle plates 41 move a small amplitude, thereby improving the filtering efficiency of the residual oil.

[0050] Specifically, as shown in Figure 5 , the blocking mechanism 4 further includes a driving member 42 fixed on the inner wall of the assembly cylinder 31, a transmission plate 43 connected to the driving end of the driving member 42, the cross section of the transmission plate 43 is L-shaped, the baffle plates 41 are connected to the bottom end of the transmission plate 43, and the transmission plate 43 is configured to not contact the filter element 32 when the baffle plates 41 are combined. In some embodiments of the present application, the driving member 42 can be a hydraulic cylinder fixed on the side wall of the assembly cylinder 31, please refer to Figure 3 , during the specific filtering, the residual oil only occupies the bottom space of the assembly cylinder 31, and it can immerse the filter element 32, in this way, the driving member 42 can be fixed on the upper side of the assembly cylinder 31, thereby avoiding the immersion of the hydraulic cylinder in the residual oil, and improving the service life of the driving member 42; in the embodiments of the present application, the transmission plate 43 is in an arc structure, the arc structure has the same curvature as the side wall of the assembly cylinder 31, thereby the transmission plate 43 can be fitted with the side wall of the assembly cylinder 31 when opening the baffle plates 41, and the stability of the transmission plate 43 is improved.

[0051] Further, please refer to Figure 6 In the embodiment of the present application, the baffle 41 is further fixed with a slide rod 43a which is in sliding connection with the bottom end of the transmission plate 43 in the vertical direction, a compression spring 43b is sleeved on the slide rod 43a, and the compression spring 43b is used to keep the baffle 41 in contact with the bottom wall of the assembly cylinder 31. Through the setting of the compression spring 43b, the baffle 41 can be kept in elastic contact with the assembly cylinder 31, and thus the close contact between the baffle 41 and the bottom of the assembly cylinder 31 can be ensured, so as to avoid the entry of impurities between the baffle 41 and the assembly cylinder 31 and improve the sealing reliability. It should be pointed out here that since the residual oil has a certain viscosity, the blocking of the residual oil into the assembly cylinder 31 can be realized only by the combination of the baffle 41.

[0052] In the embodiment of the present application, in order to reduce the occupation of the transmission plate 43 in the containing space of the residual oil at the bottom of the assembly cylinder 31, the side wall of the transmission plate 43 has a hollow frame 43c which is arranged at the part immersed in the residual oil. Through this arrangement, the flow of the residual oil in the hollow frame 43c is allowed, and thus the amount of the residual oil is increased, and thus the filtering efficiency of the residual oil is improved. It should be pointed out here that in the embodiment of the present application, the oil pressure of the residual oil pipeline 5 connected with the oil inlet pipe 11 of the primary distributor 1 can be set to realize the dynamic balance of the filtering and entry of the residual oil.

[0053] In the embodiment of the present application, the mounting structure of the filter element 32 is as shown in Figure 7 and Figure 8 The assembly cylinder 31 further has an annular stepped groove 31b, the filter element 32 has a mounting flange 32a which is adapted to the annular stepped groove 31b, and the mounting flange 32a is fixed with a handle 32b. Through the setting of the annular stepped groove 31b, the quick mounting of the filter element 32 can be realized, and through the setting of the handle 32b, the filter element 32 can be conveniently taken out. In addition, in the embodiment of the present application, the mounting flange 32a of the filter element 32 is further provided with a sealing structure (not shown in the figure), and through the setting of the sealing structure, the sealing contact with the upper cover 33 is realized, and thus the reliability of the filtering and pumping is improved.

[0054] Please refer to Figure 9In the embodiment of the present application, in order to facilitate the temporary disassembly of the upper cover 33 of the filtering mechanism 3 to replace the filter core 32, an oil feeding pipe 33a is communicated on the upper cover 33, the oil feeding pipe 33a is provided with a bellows 33b at the front end, the bellows 33b is sleeved with a positioning sleeve 33c, and the positioning sleeve 33c is provided with a positioning bolt 33d abutting against the outer wall of the oil feeding pipe 33a. Through the positioning sleeve 33c, when the upper cover 33 is disconnected from the assembly cylinder 31, the positioning bolt 33d is loosened first, and the oil feeding pipe 33a is moved into the positioning sleeve 33c by compressing the bellows 33b. It should be noted that the compression amount of the bellows 33b meets the size requirement of the filter core 32 after the upper cover 33 is removed. After moving into position, the upper cover 33 is temporarily fixed by tightening the bolt. After replacing the filter core 32, the upper cover 33 is restored to its original position. In this way, the convenience of replacing the filter core 32 is improved.

[0055] As shown in Figure 10 In the embodiment of the present application, the top of the primary distributor 1 and the secondary distributor 2 is detachably connected with a cover plate 22. Through the cover plate 22, the primary distributor 1 and the secondary distributor 2 are easily disassembled and maintained, and the service life of the primary distributor 1 and the secondary distributor 2 is improved. Further, in order to facilitate the maintenance of the residue oil filtering device after filtering, the bottom of the primary distributor 1 is connected with a blowdown pipe 23, and the bottom of the secondary distributor 2 is connected with a backflush pipe 24. Through the blowdown pipe 23 and the backflush pipe 24 at the bottom, the interior of the primary distributor 1 and the secondary distributor 2 can be cleaned.

[0056] In the embodiment of the present application, an online filter core replacement method of the residue oil filtering device is also provided. As shown in Figure 11 It should be noted that the replacement method has been described in detail above, and those skilled in the art can understand it in combination with the above description. The following will not be described in detail, and specifically includes the following steps:

[0057] S10: control the driving member 42 to drive the transmission plate 43 to make the flapper 41 close to each other to the closed state;

[0058] S20: continue to drive the supercharger set 6 to suck the filtered oil in the assembly cylinder 31 and discharge it;

[0059] S30: open the upper cover 33 connected to the assembly cylinder 31, and temporarily fix the upper cover 33 by using the positioning sleeve 33c and the positioning bolt 33d;

[0060] S40: take out the filter core 32 from the assembly cylinder 31, and replace a new filter core 32;

[0061] S50: The temporary fixing of the upper cover 33 is released, and the upper cover 33 is fixed on the assembling cylinder 31;

[0062] S60: The driving member 42 drives the transmission plate 43 to make the baffles 41 away from each other, and the residual oil filtering is recovered.

[0063] Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A residue oil filtration device, characterized in that, include: A primary distributor, wherein the primary distributor has an internal chamber for the flow of residual oil, and the primary distributor has an oil inlet pipe communicating with the internal chamber; A secondary distributor is provided at a distance from the primary distributor, and the secondary distributor has an oil outlet pipe communicating with an internal chamber. At least two filtration mechanisms, one end of which is connected to the primary distributor and the other end of which is connected to the secondary distributor; The filtration mechanism includes an assembly cylinder, a filter element detachably installed inside the assembly cylinder, and a top cover detachably connected to the assembly cylinder; The assembly cylinder also has a blocking mechanism at the bottom, a booster unit for sucking up filter oil is connected to the secondary distributor, the primary distributor is connected to the sludge oil pipeline, and the blocking mechanism is configured to block the oil inlet passage of the assembly cylinder when the filter element needs to be replaced. The blocking mechanism includes at least two baffles that are radially slidable at the bottom of the assembly cylinder. The baffles are configured to form a complete circular shape covering the oil inlet at the bottom of the assembly cylinder when they are joined together. When the baffles are radially separated from each other, the oil inlet is opened. The barrier mechanism also includes a drive component fixed on the inner wall of the assembly cylinder and a transmission plate connected to the drive end of the drive component. The transmission plate has an L-shaped cross section. The baffle is connected to the bottom end of the transmission plate. When the transmission plate is configured such that the baffle is assembled, the transmission plate does not contact the filter element. The baffle is also fixed with a slide rod that is slidably connected to the bottom end of the transmission plate in the vertical direction. A compression spring is sleeved on the slide rod. The compression spring is used to maintain the contact between the baffle and the bottom wall of the assembly cylinder to prevent impurities from entering between them.

2. The residual oil filtration device according to claim 1, characterized in that, The transmission plate has a hollow frame on its side wall, and the hollow frame is located in the part of the immersion in residual oil.

3. The residual oil filtration device according to claim 1, characterized in that, The assembly cylinder also has an annular stepped groove, and the filter element has a mounting flange that is adapted to the annular stepped groove, with a handle fixed on the mounting flange.

4. The residual oil filtration device according to claim 1, characterized in that, The upper cover is connected to an oil pipe, the front end of the oil pipe has a corrugated pipe, a positioning sleeve is fitted on the corrugated pipe, and the positioning sleeve has a positioning bolt that abuts against the outer wall of the oil pipe.

5. The residual oil filtration device according to claim 1, characterized in that, Both the primary and secondary distributors are detachably connected to a cover plate at their top.

6. The residual oil filtration device according to claim 1, characterized in that, The bottom of the primary distributor is connected to a drain pipe, and the bottom of the secondary distributor is connected to a backflushing pipe.

7. A method for online replacement of the filter element in a residual oil filtration device as described in claim 4, characterized in that, Includes the following steps: The control drive unit moves the transmission plate to bring the baffles closer together until they are in a closed state; Continue driving the booster unit to draw out and discharge the filtered oil from the assembly cylinder; Open the top cover connected to the assembly cylinder and temporarily fix the top cover using the positioning sleeve and positioning bolts; Remove the filter element from the assembly cylinder and replace it with a new filter element; Release the temporary fixation of the top cover and fix it to the assembly cylinder; The control drive unit moves the transmission plate to make the baffles move away from each other, thus restoring the filtration of residual oil.

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