Oil refining filtering equipment and filtering method for petrochemical industry

Abstract

The invention relates to the technical field of petroleum processing, and discloses petroleum refining filtering equipment for petrochemical engineering, which comprises a mounting frame, a filtering box fixed on the mounting frame, a filtering assembly arranged in the filtering box, and a feeding assembly for adding raw materials into the filtering box. One side of the filter box is open, a discharging pipe is installed on the outer side of the filter box, and a slag discharging opening is formed in the bottom of a shell of the filter box. The feeding assembly comprises a material injection pipe, the middle part of the material injection pipe penetrates through the filter box, the two ends of the material injection pipe are connected with the mounting frame, one end of the material injection pipe is used for being connected with an external material supply pipe, and a discharging opening is formed in the portion, located in the filter box, of the material injection pipe. Through the filter plate and the rotatable injection pipe, the scraping plate corresponding to the filter plate can be conveniently driven to rotate, so that residues on the surface of the scraping plate are effectively cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum processing, and in particular to an oil refining filtering device and a filtering method used in petrochemical industry. Background Art

[0002] Oil refining is a process of distilling crude oil or other oils without changing the molecular structure. In the process of oil refining, crude oil must go through a series of processing steps to obtain various useful petroleum products. Oil products need to be filtered during the refining process, but the existing filtering device needs to be shut down and cleaned after working for a period of time. The cleaning of the existing oil filtering device is not convenient and fast enough. Therefore, an oil refining filtering device and filtering method for petrochemical industry are proposed. Summary of the invention

[0003] In order to solve the technical problems raised in the background technology, the present invention provides an oil refining filtering device and a filtering method for petrochemical industry.

[0004] The present invention is implemented by the following technical scheme: an oil refining filtering device for petrochemical industry, comprising a mounting frame, a filtering box fixed on the mounting frame, a filtering component arranged in the filtering box, and a feeding component for adding raw materials into the filtering box.

[0005] One side of the filter box is open, and a discharge pipe is installed on the outside of the filter box, and a slag discharge port is opened at the bottom of the filter box shell.

[0006] The feed assembly includes an injection pipe, the middle part of which passes through the filter box, both ends of which are connected to the mounting frame, one end of which is used to connect to an external feed pipe, and a discharge port is provided on the injection pipe in the filter box.

[0007] The filter assembly includes at least one filter plate and one movable pressure plate, the filter plate and the movable pressure plate are both movably arranged in the filter box, the movable pressure plate is connected to the external pressurizing mechanism, and the injection pipe runs through each filter plate and the movable pressure plate; The space between two adjacent filter plates and the filter plates and the movable pressing plate is used to add raw materials, and the raw materials are discharged through the discharge pipe after passing through the filter plate away from the movable pressing plate.

[0008] As a further improvement of the above solution, the mounting frame includes a bottom plate, a side plate 1 and a side plate 2, wherein the side plate 1 and the side plate 2 are respectively fixed at both ends of the bottom plate, and the bottom plate is also fixed with a support column connected to the filter box. The above mounting frame can facilitate the installation of the filter box and other structures.

[0009] As a further improvement of the above scheme, the filter plate is a rectangular plate with a center hole at the center for the passage of an injection pipe. The filter plate is coaxially provided with an annular filter residue portion around the center hole, and the rest of the filter plate is a connecting portion. A scraper capable of fitting the surface of the filter residue portion is also provided on the outside of the injection pipe, and one end of the injection pipe is rotatably connected to the second side plate, and the other end is connected to an external feed pipe via a swivel joint. A power mechanism for driving the injection pipe to rotate is also provided on the first side plate.

[0010] Through the above-mentioned filter plate, during extrusion, part of the raw materials pass through the filter residue part, and the residue that cannot pass through the filter residue part stays in the original position and sticks to the surface of the filter residue part after being squeezed. The scraper can rotate to scrape off the residue, which is convenient for cleaning the filter plate and avoids the residue from clogging the filter residue part, so as to facilitate long-term use of the device.

[0011] As a further improvement of the above scheme, the power mechanism includes a motor bracket fixed on side panel 1, a driving motor installed on the motor bracket, a driving gear connected to the output shaft of the driving motor, and a driven gear fixedly sleeved on the outside of the injection tube, and the driven gear and the driving gear are meshed.

[0012] The driving mechanism has a simple structure and can effectively drive the injection pipe to rotate.

[0013] As a further improvement of the above scheme, the surface of the grouting pipe is provided with ridges along its axial direction, the end of the scraper is provided with a slot matching the ridges, and the inner wall of the center hole is also provided with a keyway corresponding to the ridges. The above scheme can facilitate the scraper to rotate with the injection pipe, thereby cleaning the filter plate.

[0014] As a further improvement of the above scheme, the pressurizing mechanism includes a plurality of hydraulic rods 1 fixed on the side plate 2, the output end of the hydraulic rod 1 is connected to the movable pressure plate, and blocks and slots are provided on the opposite sides of the movable pressure plate and the opposite sides of the filter plate. During the extrusion operation, the corresponding blocks and slots between two adjacent filter plates and between the adjacent filter plates and the movable pressure plate can cooperate.

[0015] Through the extrusion cooperation of the clamping block and the clamping slot in the above scheme, when the pressurizing mechanism is reset, the friction force of the clamping block and the clamping slot drives the movable pressing plate and each movable filter plate to reset, so as to facilitate the next injection and extrusion.

[0016] As a further improvement of the above solution, a block for sealing the slag discharge port is provided at the bottom of the filter box, a hydraulic rod 2 is fixed on the bottom plate, an output end of the hydraulic rod 2 is connected to a lifting plate, and the block is fixed on the lifting plate.

[0017] Through the lifting plate, the block can be driven to separate from the slag discharge port, so as to facilitate the discharge of the scraped residue.

[0018] As a further improvement of the above scheme, an inner rod is coaxially arranged in the injection tube, and there is a gap between the outer wall of the inner rod and the inner wall of the injection tube, and a sealing mechanism corresponding to the discharge port is arranged on the inner rod, and the sealing mechanism includes a mounting groove opened on the surface of the inner rod, a telescopic rod arranged in the mounting groove, a movable plate connected to the output end of the telescopic rod, and blocking plates 2 and 1 that can block the discharge port and the mounting groove.

[0019] Through the above scheme, the second blocking plate can be used to prevent the raw material from flowing back into the injection pipe during extrusion, and the first blocking plate can be used to prevent the raw material from entering the installation groove, so that the device can work effectively for a long time.

[0020] As a further improvement of the above scheme, a flow channel is provided in the inner rod, one end of the inner rod has a thread groove connected to the flow channel, an end cap is screwed on the thread groove, a joint is provided on the outer side of the end cap, the other end of the joint is connected to an external water supply device, and the water hole between the flow channel and the installation groove is connected. Cleaning liquid is injected into the inner rod through the water supply device, and the second plugging plate is retracted into the installation groove, so that the cleaning liquid can enter the filter box to clean the filter plate.

[0021] The present invention also proposes a filtering method, which uses the filtering device proposed in the above scheme, comprising the following steps: Step 1: injecting a certain amount of raw material into the injection pipe through an external feed pipe; Step 1: After the raw material enters the injection pipe, it overflows from the discharge port and enters between the adjacent filter plates and the adjacent filter plates and the movable pressure plate; Step 1: Start the external pressure mechanism to drive the movable pressure plate to gradually move into the filter box until the movable pressure plate and each filter plate are completely fitted; Step 1: After the extruded raw material is discharged through the discharge pipe, the external pressure mechanism is reset to drive the movable pressing plate and each filter plate to return to the initial position.

[0022] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a kind of oil refining filtering equipment for petrochemical industry, which comprises a mounting frame, a filtering box fixed on the mounting frame, a filtering component arranged in the filtering box, and a feeding component for adding raw materials into the filtering box. The filtering equipment can conveniently and automatically add raw materials therein, and after adding, pressurized filtering is performed through the filtering component, and the operation is convenient and quick.

[0023] The filter assembly proposed in the present invention includes at least one filter plate and a movable pressure plate. The filter plate and the movable pressure plate are movably arranged in the filter box. The movable pressure plate is connected to the external pressurizing mechanism, and the injection pipe runs through each filter plate and the movable pressure plate. The space between two adjacent filter plates and the filter plate and the movable pressure plate is used for adding raw materials. The raw materials are discharged through the discharge pipe after passing through the filter plate away from the movable pressure plate.

[0024] The present invention can conveniently drive the scraper corresponding to the filter plate to rotate through the filter plate and the rotatable injection pipe, thereby effectively cleaning the residue on the surface of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of the filtering device proposed by the present invention; Figure 2 A schematic diagram of the three-dimensional structure of the filtering device proposed by the present invention from another perspective; Figure 3 A front cross-sectional view of the filtering device provided by the present invention; Figure 4 This is a schematic diagram of the installation structure of the filter plate and the injection pipe proposed by the present invention; Figure 5 For the present invention Figure 4 A magnified view of the local structure in Figure 6 A partial structural perspective view of the filtering device proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the inner rod proposed by the present invention.

[0026] Description of main symbols: In the figure: bottom plate 1, side plate 1 2, side plate 2 3, hydraulic rod 1 4, support column 5, filter box 6, feed pipe 7, hydraulic rod 2 8, inner rod 9, filter plate 10, injection pipe 11, drive gear 12, drive motor 13, motor bracket 14, driven gear 15, blocking mechanism 16, gap 17, mounting groove 18, water hole 19, opening 20, end cover 21, joint 22, connecting part 23, scraper 24, filter residue part 25, docking chute 26, convex ridge 27, lifting plate 28, blocking plate 1 29, blocking plate 2 30, blocking block 31, movable plate 32, telescopic rod 33, discharge pipe 34, movable pressure plate 35. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0028] Example 1: Reference Figure 1-Figure 7 The present invention proposes an oil refining filtering device for petrochemical industry, which includes a mounting frame, a filter box 6 fixed on the mounting frame, a filter component arranged in the filter box 6, and a feed component for adding raw materials into the filter box 6.

[0029] One side of the filter box 6 is open, and a discharge pipe 34 is installed outside the filter box 6 . The discharge pipe 34 is arranged on the side away from the opening, and a slag discharge port is opened at the bottom of the shell of the filter box 6 .

[0030] The feed assembly includes an injection pipe 11, the middle part of which passes through the filter box 6, both ends of the injection pipe 11 are connected to the mounting frame, one end of the injection pipe 11 is used to connect to an external feed pipe, and a discharge port is provided on the injection pipe 11 located in the filter box 6.

[0031] The filter assembly includes at least one filter plate 10 and a movable pressure plate 35. Figure 3 For example, the scheme sets up two filter plates 10, and the filter plates 10 and the movable pressure plates 35 are movably arranged in the filter box 6 through the connection method of sliders and slide grooves, which is not specifically shown in the figure, but does not affect the implementation of this scheme by technical personnel in this field). The movable pressure plate 35 is connected to the external pressurizing mechanism, and the injection pipe 11 passes through each filter plate 10 and the movable pressure plate 35.

[0032] In this solution, raw materials are added between two adjacent filter plates 10 and between the filter plates 10 and the movable pressure plate 35. The raw materials are discharged through the discharge pipe 34 after passing through the filter plate 10 away from the movable pressure plate 35, and the residues that do not pass through will adhere to the surface of the filter plate.

[0033] In this scheme, refer to Figure 1-Figure 3 The mounting frame includes a bottom plate 1, a side plate 1 2 and a side plate 2 3, the side plates 1 2 and 2 3 are respectively fixed at both ends of the bottom plate 1, and the bottom plate 1 is also fixed with a support column 5 connected to the filter box 6. The filter box 6 and other structures can be easily installed through the above-mentioned mounting frame.

[0034] As an optional embodiment of the present invention, the filter plate 10 is a rectangular plate, a center hole for the injection pipe 11 to pass through is opened at the center of the filter plate 10, and an annular filter residue portion 25 is coaxially arranged around the center hole of the filter plate 10 (the specific structure and material of the filter residue portion 25 are selected according to the crude oil), and the rest of the filter plate 10 is a connecting portion 23. A scraper 24 capable of fitting the surface of the filter residue portion 25 is also arranged on the outside of the injection pipe 11, and one end of the injection pipe 11 is rotatably connected to the side plate 2 3, and the other end thereof is connected to the external feed pipe through a swivel joint, and a power mechanism for driving the injection pipe 11 to rotate is also arranged on the side plate 2.

[0035] Through the above-mentioned filter plate, during extrusion, part of the raw material passes through the filter residue portion 25, and the residue that cannot pass through the filter residue portion stays in the original position and is squeezed to stick to the surface of the filter residue portion, so that the scraper can rotate to scrape off the residue. Therefore, this solution can prevent the residue from clogging the filter residue portion while facilitating the cleaning of the filter plate, so as to facilitate the long-term use of the device.

[0036] As an optional embodiment of the present invention, the power mechanism includes a motor bracket 14 fixed on the side plate 2, a driving motor 13 installed on the motor bracket 14, a driving gear 12 connected to the output shaft of the driving motor 13, and a driven gear 15 fixedly sleeved on the outside of the injection tube 11, and the driven gear 15 is meshed with the driving gear 12. The driving mechanism proposed in this solution has a simple structure and can effectively drive the injection tube 11 to rotate.

[0037] In order to facilitate the scraper to follow the corresponding filter plate, a convex ridge 27 is provided on the surface of the grouting pipe 11 along its axial direction, and a slot matching the convex ridge is provided at the end of the scraper 24, and a keyway corresponding to the convex ridge is also provided on the inner wall of the center hole. The above scheme can facilitate the scraper 24 to follow the rotation of the injection pipe 11, so as to clean the filter plate. A limit stopper (not shown) is also provided on the inner wall of the filter box 6 to prevent the filter plate from continuing to move after it is reset to its original position.

[0038] The pressurizing mechanism proposed in this scheme includes a plurality of hydraulic rods 4 fixed on the side plate 3, the output end of the hydraulic rod 4 is connected to the movable pressure plate 35, and the opposite sides of the movable pressure plate 35 and the opposite sides of the filter plate 10 are provided with blocks (unnumbered) and slots (unnumbered). During the extrusion operation, the corresponding blocks and slots between two adjacent filter plates 10 and between the adjacent filter plates and the movable pressure plate 35 can cooperate.

[0039] Through the extrusion cooperation of the clamping block and the clamping slot in the above scheme, when the pressurizing mechanism is reset, the friction force of the clamping block and the clamping slot drives the movable pressing plate and each movable filter plate to reset, so as to facilitate the next injection and extrusion.

[0040] It should be noted that a block 31 for blocking the slag discharge port is provided at the bottom of the filter box, a hydraulic rod 28 is fixed on the bottom plate 1, the output end of the hydraulic rod 28 is connected to a lifting plate 28, and the block 31 is fixed on the lifting plate 28. The lifting plate 28 is driven to move by the hydraulic rod 28, so that the block 31 can be driven to separate from the slag discharge port, so as to discharge the scraped residue.

[0041] As a further improvement of the above scheme, an inner rod 9 is coaxially arranged in the injection tube 11, a gap 17 is provided between the outer wall of the inner rod 9 and the inner wall of the injection tube 11, and a sealing mechanism corresponding to the discharge port is provided on the inner rod 9, the sealing mechanism includes a mounting groove 18 provided on the surface of the inner rod 9, a telescopic rod 33 provided in the mounting groove 18, a movable plate 32 connected to the output end of the telescopic rod 33, and a blocking plate 2 30 and a blocking plate 1 29 capable of blocking the discharge port and the notch of the mounting groove 18. In this scheme, the telescopic rod 33 can be a miniature electric push rod.

[0042] During specific operation, the blocking plate 2 30 can be used to prevent the raw material from flowing back into the injection tube 11 during extrusion, and the blocking plate 1 29 can be used to prevent the raw material from entering the installation groove 18, so that the device can work effectively for a long time.

[0043] In order to further facilitate the long-term operation of the device, a flow channel (not marked) is provided in the inner rod 9, one end of the inner rod has a threaded groove connected to the flow channel, an end cap 21 is screwed on the threaded groove, a joint 22 is provided on the outer side of the end cap 21, the other end of the joint 22 is connected to an external water supply device, and the water hole 19 between the flow channel and the installation groove 18 is connected. Cleaning liquid is injected into the inner rod through the water supply device, and the second plugging plate is retracted into the installation groove, so that the cleaning liquid can enter the filter box to clean the filter plate. After the specific cleaning liquid enters the flow channel, it is sprayed out through each water hole, thereby entering the filter box. When the filter box is filled with cleaning liquid and soaked, the filter plate can be cleaned, and then the cleaning liquid is discharged by the pressurizing mechanism, which can further improve the cleaning effect.

[0044] Embodiment 2: The present invention also proposes a filtering method, using the filtering device proposed in the above scheme, comprising the following steps: Step 1, inject a certain amount of raw material into the injection pipe 11 through the external feed pipe; Step 2, after the raw material enters the injection pipe 11, it overflows from the discharge port and enters between adjacent filter plates, adjacent filter plates and movable pressure plates; Step 3, start the external pressurizing mechanism, which drives the movable pressure plate to gradually move into the filter box until the movable pressure plate and each filter plate are completely fitted; Step 4, after the extruded raw material is discharged through the discharge pipe 34, the external pressurizing mechanism is reset to drive the movable pressure plate and each filter plate to return to the initial position.

[0045] During specific filtration, the first state of the sealing mechanism is that both the plugging plate 1 and the plugging plate 2 are located in the installation groove 18. At this time, the raw material enters the gap 17 and is squeezed into the filter box, and the addition of raw material is stopped after the raw material is filled between each filter plate. When the next step of extrusion is performed, the pressure mechanism drives each movable filter plate to gradually approach the filter plate fixed to the filter box, so that the raw material passes through the filter residue part on the fixed filter plate and is finally discharged from the discharge pipe 34. After the extrusion and filtration operation is completed, the injection pipe 11 is driven to rotate by the driving mechanism, so that the residue on the corresponding filter plate is scraped off by the scraper, and the residue is finally discharged through the residue discharge port.

[0046] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An oil refining filtration equipment for petrochemical industry, characterized in that: It includes a mounting frame, a filter box fixed on the mounting frame, a filter assembly arranged in the filter box, and a feed assembly for adding raw materials into the filter box; One side of the filter box is open, and a discharge pipe is installed on the outside of the filter box, and a slag discharge port is opened at the bottom of the filter box shell; The feed assembly includes an injection pipe, the middle part of which passes through the filter box, both ends of which are connected to the mounting frame, one end of which is used to connect to an external feed pipe, and a discharge port is provided on the injection pipe in the filter box; The filter assembly includes at least one filter plate and one movable pressure plate, the filter plate and the movable pressure plate are both movably arranged in the filter box, the movable pressure plate is connected to the external pressurizing mechanism, and the injection pipe runs through each filter plate and the movable pressure plate; The space between two adjacent filter plates and the filter plates and the movable pressing plate is used to add raw materials, and the raw materials are discharged through the discharge pipe after passing through the filter plate away from the movable pressing plate.

2. An oil refining filtration device for petrochemical industry as claimed in claim 1, characterized in that: The mounting frame comprises a bottom plate, a first side plate and a second side plate. The first side plate and the second side plate are respectively fixed on two ends of the bottom plate. The bottom plate is also fixed with a supporting column connected to the filter box.

3. An oil refining filtration device for petrochemical industry as claimed in claim 2, characterized in that: The filter plate is a rectangular plate with a center hole for an injection pipe to pass through at the center. The filter plate is coaxially provided with an annular filter residue portion around the center hole. The rest of the filter plate is a connecting portion. A scraper capable of fitting the surface of the filter residue portion is also provided on the outside of the injection pipe. One end of the injection pipe is rotatably connected to the second side plate, and the other end is connected to an external feed pipe via a swivel joint. A power mechanism for driving the injection pipe to rotate is also provided on the first side plate.

4. An oil refining filtration device for petrochemical industry as claimed in claim 1, characterized in that: The power mechanism includes a motor bracket fixed on the side plate 1, a driving motor installed on the motor bracket, a driving gear connected to the output shaft of the driving motor, and a driven gear fixedly sleeved on the outside of the injection pipe, and the driven gear is meshed with the driving gear.

5. An oil refining filtration device for petrochemical industry as claimed in claim 4, characterized in that: The surface of the grouting pipe is provided with ridges along its axial direction, the end of the scraper is provided with a groove matching with the ridges, and the inner wall of the center hole is also provided with a keyway corresponding to the ridges.

6. An oil refining filtration device for petrochemical industry as claimed in claim 5, characterized in that: The pressurizing mechanism includes a plurality of hydraulic rods 1 fixed on the side plate 2, the output end of the hydraulic rod 1 is connected to the movable pressing plate, and blocks and slots are provided on the opposite sides of the movable pressing plate and the opposite sides of the filter plate. During the extrusion operation, the corresponding blocks and slots between two adjacent filter plates and between the adjacent filter plate and the movable pressing plate can cooperate.

7. An oil refining filtration device for petrochemical industry as claimed in claim 5, characterized in that: A blocking block for blocking the slag discharge port is arranged at the bottom of the filter box, a hydraulic rod 2 is fixed on the bottom plate, an output end of the hydraulic rod 2 is connected to a lifting plate, and the blocking block is fixed on the lifting plate.

8. An oil refining filtration device for petrochemical industry as claimed in claim 7, characterized in that: An inner rod is also coaxially arranged in the injection tube, and a gap is provided between the outer wall of the inner rod and the inner wall of the injection tube, and a sealing mechanism corresponding to the discharge port is provided on the inner rod, and the sealing mechanism includes a mounting groove opened on the surface of the inner rod, a telescopic rod arranged in the mounting groove, a movable plate connected to the output end of the telescopic rod, and a blocking plate 2 and a blocking plate 1 that can block the discharge port and the mounting groove.

9. An oil refining filtration device for petrochemical industry as claimed in claim 8, characterized in that: A flow channel is provided in the inner rod, one end of the inner rod has a threaded groove connected to the flow channel, an end cover is spirally installed at the threaded groove, a joint is provided on the outside of the end cover, the other end of the joint is connected to an external water supply device, and the water hole between the flow channel and the installation groove is connected.

10. A filtering method, characterized in that: The filtering device according to claim 1 comprises the following steps: Step 1, injecting a certain amount of raw material into the injection pipe through the external feed pipe; Step 2: After the raw material enters the injection pipe, it overflows from the discharge port and enters between the adjacent filter plates and the adjacent filter plates and the movable pressure plate; Step 3, start the external pressure mechanism, which drives the movable pressure plate to gradually move into the filter box until the movable pressure plate and each filter plate are completely fitted; Step 4: After the extruded raw material is discharged through the discharge pipe, the external pressure mechanism is reset to drive the movable pressure plate and each filter plate to return to the initial position.

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