A filter assembly for a crude oil surge tank

Abstract

The application relates to the technical field of oil processing equipment, in particular to a filtering assembly of a crude oil temporary storage pool, which comprises a pool body, a first oil discharge port and a second oil discharge port are arranged on a pool wall of the pool body; the first oil discharge port is in openable and closable communication with a first filtering assembly, the second oil discharge port is in openable and closable communication with a second filtering assembly; the first filtering assembly and the second filtering assembly are of the same structure; a plurality of first filter holes are arranged on the peripheral wall of the first cylindrical filter core, a first oil discharge pipe located outside the first containing cylinder is in openable and closable communication with the inner cavity of the first cylindrical filter core; the first cylindrical filter core of the first filtering assembly and the first cylindrical filter core of the second filtering assembly are in openable and closable communication through a backflush pipe. The application can realize cleaning of the filter core without stopping the machine to improve the production efficiency, and meanwhile, the filtering and cleaning effects are enhanced through the two filtering assemblies of the same structure and the backflush communication and cleaning ring and other structures.

Description

Technical Field

[0001] This application relates to the technical field of oil processing equipment, and in particular to a filter assembly for a crude oil storage tank. Background Technology

[0002] In oil processing, crude oil storage tanks are commonly used to temporarily store crude oil. To ensure the quality of the crude oil, filter components are usually installed in the storage tanks to remove impurities. However, existing filter components in crude oil storage tanks have some shortcomings. During filtration, the filter components are easily clogged by impurities. When clogged, the machine needs to be stopped for cleaning, which not only affects production efficiency but also increases labor intensity and production costs.

[0003] A search revealed Chinese Patent Publication No. CN222969406U, which discloses a settling tank for filtering crude oil, comprising a shell and a slag remover, a screen plate, an annular scraper chain, and a grid disposed therein. The screen plate is horizontally arranged on the side of the slag inlet of the slag remover, the annular scraper chain is arranged around the screen plate and the slag remover, the grid is in the shape of a nine-square grid, located in the lower middle part of the shell, the oil outlet of the slag remover is directly opposite one corner of the nine-square grid, the oil outlet on the side of the shell is located on the front side of the middle of the grid, and a flow port is provided on the upper part of the grid.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: in the prior art, the filter components require shutdown for cleaning after clogging, leading to a decrease in production efficiency. This application aims to solve the technical problem of decreased production efficiency caused by the need to shut down the machine for cleaning the filter components in the crude oil storage tank after clogging. By setting up two identical filter components connected via a backflushing pipe, a cleaning ring, and a detachable lower end cap, the invention achieves the technical effect of cleaning the filter element without shutting down the machine, thereby improving production efficiency and enhancing filtration and cleaning effects. Utility Model Content

[0005] To avoid downtime for cleaning due to clogging of the filter assembly, this application provides a filter assembly for a crude oil storage tank.

[0006] This application provides a filtration assembly for a crude oil storage tank, employing the following technical solution: It includes a tank body, with a first oil outlet and a second oil outlet on the tank wall; the first oil outlet is closable and connected to a first filtration assembly, and the second oil outlet is closable and connected to a second filtration assembly; the first and second filtration assemblies have identical structures; the first filtration assembly includes a first receiving cylinder connected to the first oil outlet; a first cylindrical filter element is disposed within the first receiving cylinder; the peripheral wall of the first cylindrical filter element has multiple first filter holes, and the inner cavity of the first cylindrical filter element is closable and connected to a first oil discharge pipe located outside the first receiving cylinder; the first cylindrical filter element of the first filtration assembly and the first cylindrical filter element of the second filtration assembly are connected via an openable and closable backflushing pipe. By setting two identical and backflushing-connected filtration assemblies and a cleaning ring, filter element cleaning can be achieved without stopping the machine, thereby improving production efficiency.

[0007] Optionally, a cleaning ring is vertically slidably connected inside the first accommodating cylinder; the inner wall of the cleaning ring is adapted to the outer wall of the first cylindrical filter element, and the outer wall of the cleaning ring is adapted to the inner wall of the first accommodating cylinder.

[0008] Optionally, the upper end of the cleaning ring is provided with a plurality of second filter holes extending downwards.

[0009] Optionally, a pressing rod is fixedly provided on the cleaning ring, and the pressing rod is slidably connected to the top wall of the corresponding first receiving cylinder.

[0010] Optionally, the lower end cap of the first accommodating cylinder is detachably connected to the first accommodating cylinder; a plurality of third filter holes are provided through the lower end cap; a second oil pipe adapted to the plurality of third filter holes is provided on the lower end face of the lower end cap.

[0011] Optionally, the first oil drain port and the second oil drain port are connected to the first filter assembly or the second filter assembly via a first valve and a second valve, respectively.

[0012] Optionally, a third valve may be installed on the first oil drain pipe.

[0013] Optionally, a fourth valve is provided on the second oil drain pipe.

[0014] In summary, this application includes the following beneficial technical effects: 1. This utility model sets up two filter components with the same structure. When the first cylindrical filter element of one filter component is blocked by the accumulation of impurities, it can be backwashed by the oil filtered by the other filter component through the backwash pipe. The first cylindrical filter element can be cleaned without stopping the machine, avoiding production interruption caused by machine shutdown for cleaning, improving production efficiency, and reducing labor intensity and production costs.

[0015] 2. This utility model features a cleaning ring that slides vertically inside the first accommodating cylinder. The inner wall of the cleaning ring is adapted to the outer wall of the first cylindrical filter element. By pressing down the pressing rod, the cleaning ring can slide up and down along the outer wall of the first cylindrical filter element, scraping off impurities attached to the surface of the first cylindrical filter element. At the same time, it pushes the impurities backwashed out to the bottom of the first accommodating cylinder, further improving the cleaning effect. The lower end cover of the first accommodating cylinder is detachable. The third filter hole on the lower end cover can intercept impurities in the backwash oil, making it convenient for operators to remove the lower end cover for cleaning and ensuring the cleanliness of the inside of the accommodating cylinder. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the first cylindrical filter element in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the lower end cap in an embodiment of this application; Figure 4 This is a schematic diagram of the cleaning ring structure in an embodiment of this application.

[0017] Reference numerals in the attached drawings: 1. Pool body; 2. First filter assembly; 3. Second filter assembly; 4. First cylindrical filter element; 5. Backflush pipe; 6. First valve; 7. Second valve; 8. First receiving cylinder; 9. Lower end cap; 10. First filter hole; 11. First oil drain pipe; 12. Third valve; 13. Cleaning ring; 14. Second filter hole; 15. Downward pressure rod; 16. Third filter hole; 17. Second oil drain pipe; 18. Fourth valve. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] This application discloses a filtration assembly for a crude oil temporary storage tank. For example... Figure 1 As shown, it includes a pool body 1, a first oil drain port and a second oil drain port disposed on the pool wall of the pool body 1, and a first filter assembly 2 and a second filter assembly 3 respectively connected to the two oil drain ports; wherein, the first filter assembly 2 and the second filter assembly 3 have the same structure, and both the first filter assembly 2 and the second filter assembly 3 are provided with a first cylindrical filter element 4, and the first cylindrical filter elements 4 of the two are connected by an openable and closable backwash pipe 5 to realize the backwash cleaning function of the first cylindrical filter element 4.

[0020] Please see Figure 1The tank body 1 is a rectangular box structure with a first oil drain port and a second oil drain port on the side wall. The first oil drain port is connected to the first filter assembly 2 through a first valve 6, and the second oil drain port is connected to the second filter assembly 3 through a second valve 7. Both the first valve 6 and the second valve 7 can be ball valves, which can be controlled to open and close manually or electrically to regulate the flow and on / off of crude oil. Please see Figure 2 Taking the first filter assembly 2 as an example (the second filter assembly 3 has the same structure), it includes a first receiving cylinder 8, which is cylindrical in shape. One end of the first receiving cylinder 8 is fixedly connected to the first valve 6 through a flange, and a detachable lower end cover 9 is provided at the bottom. The inner wall of the first receiving cylinder 8 is smooth to ensure smooth flow of crude oil. The first cylindrical filter element 4 is disposed in the first receiving cylinder 8 and is cylindrical in shape. Multiple first filter holes 10 are evenly opened on its peripheral wall. The first filter holes 10 are used to filter solid particles in the crude oil. The first oil drain pipe 11 is connected to the inner cavity of the first cylindrical filter element 4, and one end of the first oil drain pipe 11 extends to the outside through the top wall of the first receiving cylinder 8. A third valve 12 is provided on the first oil drain pipe 11 to control the discharge of the filtered crude oil.

[0021] Please see Figure 2 The first cylindrical filter element 4 of the first filter assembly 2 and the first cylindrical filter element 4 of the second filter assembly 3 are connected by a backflushing pipe 5. The two ends of the backflushing pipe 5 are respectively connected to the inner cavities of the two filter elements, and a solenoid valve (not labeled in the figure) is installed on the pipe to control its opening and closing. When it is necessary to clean the first cylindrical filter element 4 of the first filter assembly 2, the filtered oil in the first cylindrical filter element 4 of the second filter assembly 3 can be introduced into the first cylindrical filter element 4 through the backflushing pipe 5 to backflush the impurities on the outer wall of the filter element, so as to achieve cleaning without stopping the machine. When it is necessary to clean the first cylindrical filter element 4 of the second filter assembly 3, the above operation can be repeated in reverse.

[0022] Please see Figure 2 and 4 A cleaning ring 13 is vertically slidably connected inside the first receiving cylinder 8. The inner wall of the cleaning ring 13 is tightly fitted to the outer wall of the first cylindrical filter element 4, and the outer wall is adapted to the inner wall of the first receiving cylinder 8 to form a sealed sliding fit. Multiple second filter holes 14 are opened downwards on the upper end face of the cleaning ring 13 to ensure that the crude oil can pass through smoothly. A pressing rod 15 is fixedly connected to the upper end face of the cleaning ring 13. The pressing rod 15 is a cylindrical rod whose upper end passes through the top wall of the first receiving cylinder 8 and extends to the outside, and is slidably connected to the top wall. By manually or mechanically pressing down the pressing rod 15, the cleaning ring 13 can be driven to slide up and down along the outer wall of the filter element to scrape off the impurities attached to the surface of the filter element, and at the same time clean the impurities backflowed in the first receiving cylinder 8, pushing the impurities to the bottom of the first receiving cylinder 8.

[0023] Please see Figure 2 and Figure 3The lower end cover 9 of the first container 8 is detachably connected to the first container 8, facilitating disassembly and cleaning of the inside of the container. Multiple third filter holes 16 are provided through the lower end cover 9; a second oil drain pipe 17, adapted to the third filter holes 16, is fixedly connected to the lower end face of the lower end cover 9; one end of the second oil drain pipe 17 communicates with the third filter holes 16, and the other end extends to the outside of the tank body 1. A fourth valve 18 is provided on the second oil drain pipe 17 to control the discharge of backwash oil from the first container 8. Backwash impurities in the first container 8 are retained on the lower end cover 9 by the third filter holes 16. Operators can remove the lower end cover 9 to clean the impurities.

[0024] The implementation principle of the filter assembly of the crude oil temporary storage tank in this application embodiment is as follows: The crude oil in the tank 1 flows into the first filter assembly 2 and the second filter assembly 3 through the first oil outlet and the second oil outlet on the tank wall, respectively; the first valve 6 and the second valve 7 are in the open state to control the flow rate and on / off state of the crude oil. After crude oil enters the first receiving cylinder 8, it is filtered through the first filter holes 10 on the periphery of the first cylindrical filter element 4. Solid impurities are intercepted on the outer wall of the first cylindrical filter element 4, and the filtered crude oil enters the inner cavity of the first cylindrical filter element 4. The filtered crude oil is discharged through the first oil drain pipe 11, and the third valve 12 is in the open state to control the discharge of filtered oil. The first filter assembly 2 and the second filter assembly 3 have the same structure and can work simultaneously or be used alternately to ensure continuous filtration and avoid downtime due to blockage of a single component. When the first cylindrical filter element 4 of the first filter assembly 2 becomes clogged due to the accumulation of impurities, the first valve 6 and the third valve 12 are closed to stop the normal filtration of the first filter assembly 2; the solenoid valve on the backflush pipe 5 is opened to allow the filter oil in the inner cavity of the first cylindrical filter element 4 of the second filter assembly 3 to flow into the inner cavity of the first cylindrical filter element 4 of the first filter assembly 2 through the backflush pipe 5; the filter oil flows outward from the inner cavity of the first cylindrical filter element 4 in the reverse direction, flushing the impurities on the outer wall of the first cylindrical filter element 4, causing the impurities to detach from the surface of the first cylindrical filter element 4 and fall into the first receiving cylinder 8; After backflushing and cleaning are completed, close the solenoid valve and open the fourth valve 18. The backflushing oil and impurities at the bottom of the first container 8 flow into the second oil drain pipe 17 through the third filter hole 16 of the lower end cover 9 and are discharged to the outside of the tank body 1. The third filter hole 16 can intercept larger impurity particles and prevent them from being discharged with the backflushing oil. By manually or mechanically pressing down the pressure rod 15, the cleaning ring 13 slides up and down along the outer wall of the first cylindrical filter element 4 to further scrape off the impurities attached to the surface of the filter element and push the backflowed impurities to the bottom of the first receiving cylinder 8; remove the lower end cover 9 of the first receiving cylinder 8 and directly clean the impurities intercepted on the lower end cover 9 to ensure the cleanliness of the inside of the receiving cylinder. Install the lower end cap 9, open the first valve 6 and the third valve 12, close the solenoid valve of the backwash pipe 5, and the first filter component 2 will resume normal filtration; if the second filter component 3 needs to be cleaned, repeat the above backwash process.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filtration assembly for a crude oil storage tank, comprising a tank body, characterized in that: The pool body has a first oil drain port and a second oil drain port on its wall; the first oil drain port is closable and connected to a first filter assembly, and the second oil drain port is closable and connected to a second filter assembly; the first filter assembly and the second filter assembly have the same structure; the first filter assembly includes a first receiving cylinder connected to the first oil drain port; a first cylindrical filter element is disposed inside the first receiving cylinder; the peripheral wall of the first cylindrical filter element is provided with a plurality of first filter holes, and the inner cavity of the first cylindrical filter element is closable and connected to a first oil drain pipe located outside the first receiving cylinder; the first cylindrical filter element of the first filter assembly and the first cylindrical filter element of the second filter assembly are connected through an openable and closable backflushing pipe.

2. The filter assembly for a crude oil temporary storage tank according to claim 1, characterized in that: A cleaning ring is vertically slidably connected inside the first accommodating cylinder; the inner wall of the cleaning ring is adapted to the outer wall of the first cylindrical filter element, and the outer wall of the cleaning ring is adapted to the inner wall of the first accommodating cylinder.

3. The filter assembly for a crude oil temporary storage tank according to claim 2, characterized in that: The cleaning ring has multiple second filter holes extending downwards from its upper end.

4. The filter assembly for a crude oil temporary storage tank according to claim 2, characterized in that: A pressing rod is fixedly installed on the cleaning ring, and the pressing rod is slidably connected to the top wall of the corresponding first receiving cylinder.

5. The filter assembly for a crude oil temporary storage tank according to claim 1, characterized in that: The lower end cap of the first accommodating cylinder is detachably connected to the first accommodating cylinder; a plurality of third filter holes are provided through the lower end cap; a second oil pipe adapted to the plurality of third filter holes is provided on the lower end face of the lower end cap.

6. The filter assembly for a crude oil temporary storage tank according to claim 1, characterized in that: The first oil drain port and the second oil drain port are respectively connected to the first filter assembly or the second filter assembly through the first valve and the second valve.

7. The filter assembly for a crude oil temporary storage tank according to claim 1, characterized in that: A third valve is installed on the first oil drain pipe.

8. The filter assembly for a crude oil temporary storage tank according to claim 5, characterized in that: A fourth valve is installed on the second oil drain pipe.

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