A petrochemical filtering device

Abstract

The utility model discloses a kind of petroleum chemical industry filtering devices, it is related to filtering device field, including filter shell, annular limit board and blowdown valve, blowdown valve is equipped in filter shell lower surface, annular limit board is fixedly connected with filter shell inner wall, the side of annular limit board close to the feed inlet of filter shell is below the feed inlet of filter shell, the side of annular limit board close to the discharge port of filter shell is above the discharge port of filter shell, impurity guide formula filter basket is equipped in filter shell, impurity guide formula filter basket is slidably connected with the shell inner wall, impurity guide formula filter basket and the upper surface of annular limit board contact, vortex generating component is equipped on the outer wall of impurity guide formula filter basket, beneficial effect is in at: solid impurities are guided to basket type filter screen close to the side of feed pipe, while not reducing filtration area, avoid the solid material accumulation to basket type filter screen close to the side of discharge pipe and cause the reduction of filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a petrochemical filtration device. Background Technology

[0002] As is well known, pipeline filtration devices are used in the petrochemical production process to remove solid impurities, rock fragments, and gravel from crude oil and refined oil. These devices are typically installed at the front end of the pump body to filter out solid impurities and prevent them from entering the pump body and causing damage.

[0003] Chinese patent CN222969371U describes a filtration device for a petrochemical production process. This device includes a cylinder open at the top, with a horizontally penetrating through-hole on its outer edge. An oil inlet pipe is connected to the left end of the through-hole, and an oil outlet pipe is connected to the right end. A filter cartridge that slides up and down on its inner edge is located inside the cylinder. However, in actual use, the following problems exist:

[0004] When filtering solid impurities, the filter needs to filter the oil to enter from the inlet and impact the filter basket. The solid impurities in the oil slide down the filter basket and accumulate on the side near the oil outlet. Since the oil flows from the inlet to the outlet, too much solid impurity accumulating on the side near the outlet will affect the filtration efficiency.

[0005] Therefore, a petrochemical filtration device is proposed. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a petrochemical filtration device.

[0007] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0008] A petrochemical filtration device includes a filter housing, an annular limiting plate, and a drain valve. The drain valve is located on the lower surface of the filter housing. The annular limiting plate is fixedly connected to the inner wall of the filter housing. The side of the annular limiting plate near the inlet of the filter housing is located below the inlet of the filter housing, and the side of the annular limiting plate near the outlet of the filter housing is located above the outlet of the filter housing. An impurity-guiding filter basket is provided inside the filter housing and is slidably connected to the inner wall of the housing. The impurity-guiding filter basket is in contact with the upper surface of the annular limiting plate. The impurity-guiding filter basket is used to guide solid impurities to accumulate inside the impurity-guiding filter basket near the inlet. A vortex generating component is provided on the outer wall of the impurity-guiding filter basket.

[0009] The filter housing includes a filter housing, an inlet pipe, an outlet pipe, and a sealing cover. The inlet pipe and the outlet pipe are fixedly connected to both sides of the filter housing, and the filter housing, the inlet pipe, and the outlet pipe are connected in communication. The upper surface of the filter housing is connected to the sealing cover, and the lower surface of the filter housing is provided with the drain valve. The annular limiting plate is fixedly connected to the inner wall of the filter housing.

[0010] The impurity-guiding filter basket consists of an annular baffle plate, a basket filter screen, and a handle. The annular baffle plate is slidably connected to the inner wall of the filter housing. The lower surface of the annular baffle plate contacts the upper surface of the annular limiting plate, and the shapes of the annular baffle plate and the annular limiting plate correspond. A handle is fixedly connected to the upper surface of the annular baffle plate, and the basket filter screen is fixedly connected to the lower surface of the annular baffle plate. The opening of the basket filter screen faces upward, and the middle section of the basket filter screen has a spiral-shaped concave bulge. The concave bulge is used to guide solid impurities to accumulate inside the basket filter screen near the feed pipe.

[0011] The tangent at the lower end of the spiral-shaped concave bulge in the middle section of the basket filter faces the side of the basket filter closer to the feed pipe.

[0012] The annular limiting plate is provided with multiple sets of compression springs, which are evenly distributed on the annular limiting plate. One end of the compression spring is fixedly connected to the upper surface of the annular limiting plate, and the other end of the compression spring is in contact with the annular blocking plate.

[0013] The vortex generating component is a guide plate, the outer wall of the basket filter is fixedly connected to the guide plate, and the guide plate is spiral-shaped.

[0014] The pitch of the guide plate is equal to the pitch of the spiral-shaped concave bulge in the middle section of the basket filter, and the connection between the guide plate and the middle section of the basket filter is located below the spiral-shaped concave bulge in the middle section of the basket filter.

[0015] The drain valve is located at the center of the lower surface of the filter housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This petrochemical filtration device, during use, uses a spiral-shaped concave bulge in the middle section of the basket filter screen to guide solid impurities to the side of the basket filter screen near the feed pipe. This avoids a reduction in filtration efficiency caused by the accumulation of solid materials on the side of the basket filter screen near the discharge pipe without reducing the filtration area. The compression spring between the annular baffle plate and the annular limit plate prevents excessive pressure during the initial impact on the basket filter screen, which could cause solid impurities to wear down the screen. When the oil is discharged through the drain valve, the guide plate creates a vortex in the downward-flowing oil, which picks up the sludge at the bottom of the filter housing and flushes it out through the drain valve. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side cross-sectional view of the present invention;

[0020] Figure 3 This is a top view of the cross-sectional structure of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the impurity-guiding filter basket of this utility model;

[0022] Figure 5 This is a bottom view of the structure of the impurity-guiding filter basket of this utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the side of the impurity-guiding filter basket of this utility model.

[0024] Figure 7 This utility model Figure 2 A magnified cross-sectional view of point A is shown.

[0025] 1. Filter housing; 2. Feed pipe; 3. Discharge pipe; 4. Annular limiting plate; 5. Sealing cover; 6. Drain valve; 7. Annular baffle plate; 8. Basket filter screen; 9. Handle; 10. Concave bulge; 11. Compression spring; 12. Guide plate. Detailed Implementation

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0028] like Figure 1 and Figure 2 As shown, a petrochemical filtration device includes a filter housing, an annular limiting plate 4, and a drain valve 6. The drain valve 6 is provided on the lower surface of the filter housing. The annular limiting plate 4 is fixedly connected to the inner wall of the filter housing. The side of the annular limiting plate 4 near the feed inlet of the filter housing is located below the feed inlet of the filter housing, and the side of the annular limiting plate 4 near the discharge outlet of the filter housing is located above the discharge outlet of the filter housing. An impurity guiding filter basket is provided inside the filter housing. The impurity guiding filter basket is slidably connected to the inner wall of the housing and is in contact with the upper surface of the annular limiting plate 4. The impurity guiding filter basket is used to guide solid impurities to accumulate in the impurity guiding filter basket near the feed inlet. A vortex generating component is provided on the outer wall of the impurity guiding filter basket.

[0029] like Figure 1 and Figure 2 As shown, the filter housing includes a filter housing 1, an inlet pipe 2, an outlet pipe 3, and a sealing cover 5. The inlet pipe 2 and the outlet pipe 3 are fixedly connected to both sides of the filter housing 1, and the filter housing 1, the inlet pipe 2, and the outlet pipe 3 are connected. The upper surface of the filter housing 1 is connected to the sealing cover 5, and the lower surface of the filter housing 1 is provided with a drain valve 6. The annular limiting plate 4 is fixedly connected to the inner wall of the filter housing 1.

[0030] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the impurity guiding filter basket consists of an annular baffle plate 7, a basket filter screen 8, and a handle 9. The annular baffle plate 7 is slidably connected to the inner wall of the filter housing 1. The lower surface of the annular baffle plate 7 is in contact with the upper surface of the annular limiting plate 4, and the shapes of the annular baffle plate 7 and the annular limiting plate 4 correspond. The handle 9 is fixedly connected to the upper surface of the annular baffle plate 7, and the basket filter screen 8 is fixedly connected to the lower surface of the annular baffle plate 7. The opening of the basket filter screen 8 faces upward, and the middle section of the basket filter screen 8 is provided with a spiral-shaped concave bulge 10. The concave bulge 10 is used to guide solid impurities to accumulate in the basket filter screen 8 on the side near the feed pipe 2.

[0031] like Figure 4 As shown, the bottom end of the spiral-shaped concave bulge 10 in the middle section of the basket filter 8 is oriented towards the side of the basket filter 8 closest to the feed pipe 2.

[0032] like Figure 2 and Figure 7As shown, the annular limiting plate 4 is provided with multiple sets of compression springs 11, and the compression springs 11 are evenly distributed on the annular limiting plate 4. One end of the compression spring 11 is fixedly connected to the upper surface of the annular limiting plate 4, and the other end of the compression spring 11 is in contact with the annular blocking plate 7.

[0033] like Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the vortex generating component is the guide plate 12, the outer wall of the basket filter 8 is fixedly connected to the guide plate 12, and the guide plate 12 is spiral-shaped.

[0034] like Figure 2 , Figure 4 and Figure 6 As shown, the pitch of the guide plate 12 is equal to the pitch of the spiral concave bulge 10 in the middle section of the basket filter 8, and the connection between the guide plate 12 and the middle section of the basket filter 8 is located below the spiral concave bulge 10 in the middle section of the basket filter 8.

[0035] like Figure 1 and Figure 2 As shown, the drain valve 6 is located at the center of the lower surface of the filter housing.

[0036] The work process is as follows:

[0037] S1, During operation, the oil to be filtered flows into the filter housing 1 from the feed pipe 2. At this time, solid impurities, under the influence of gravity, impact the basket filter screen 8 in a parabolic trajectory. Because the middle section of the basket filter screen 8 has a spiral-shaped concave bulge 10, a spiral-shaped protrusion is formed inside the basket filter screen 8. When solid impurities hit the spiral-shaped concave bulge 10 in the middle section of the basket filter screen 8, they will bounce back to the side of the basket filter screen 8 closest to the feed pipe 2, without rebounding. When solid impurities slide down the inner wall of the basket filter 8, the tangent at the lower end of the spiral concave bulge 10 in the middle section of the basket filter 8 faces the side of the basket filter 8 closer to the feed pipe 2. The sliding solid impurities also slide down along the spiral concave bulge 10 in the middle section of the basket filter 8 to the side of the basket filter 8 closer to the feed pipe 2. Without reducing the filtration area, this avoids the accumulation of solid materials on the side of the basket filter 8 closer to the discharge pipe 3, which would reduce the filtration efficiency.

[0038] S2, when starting, the oil to be filtered just enters the filter housing 1, and the impact on the basket filter 8 is relatively large. At this time, the compression spring 11 set between the annular baffle plate 7 and the annular limit plate 4 can play a buffering role, avoiding excessive pressure when the basket filter 8 is impacted for the first time, which would cause solid impurities to wear the basket filter 8.

[0039] S3. When it is necessary to clean the basket filter screen 8, first close the valves of the feed pipe 2 and the discharge pipe 3, open the drain valve 6 to discharge the oil in the filter housing 1, open the sealing cover 5, and hold the handle 9 to take out the basket filter screen 8 for cleaning. When the drain valve 6 is opened, the internal oil pressure will squeeze the oil out of the drain valve 6. The oil will exert downward pressure on the basket filter screen 8. Due to the setting of the compression spring 11, the basket filter screen 8 vibrates up and down, which avoids solid impurities from clogging the filter holes of the basket filter screen 8 and improves the oil discharge efficiency. At the same time, when the oil is discharged downward, when it passes through the "spiral" shaped guide plate 12, the downward flowing oil forms a vortex, which picks up the sludge at the bottom of the filter housing 1 and discharges the sludge from the drain valve 6.

[0040] The drain valve 6 is located at the center of the lower surface of the filter housing 1. When the oil flows through the guide plate 12 and forms a vortex, the sludge in the center is rolled up first, which can prevent the sludge from clogging the drain valve 6. The pitch of the guide plate 12 is equal to the pitch of the spiral concave bulge 10 in the middle section of the basket filter screen 8. The guide plate 12 is located below the concave bulge 10, which avoids the guide plate 12 from overlapping with the concave bulge 10.

[0041] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A petrochemical filtration device, comprising a filter housing, an annular limiting plate (4), and a drain valve (6), wherein the drain valve (6) is provided on the lower surface of the filter housing, and the annular limiting plate (4) is fixedly connected to the inner wall of the filter housing, wherein the side of the annular limiting plate (4) near the feed inlet of the filter housing is located below the feed inlet of the filter housing, and the side of the annular limiting plate (4) near the discharge outlet of the filter housing is located above the discharge outlet of the filter housing, characterized in that: The filter housing is provided with an impurity guiding filter basket, which is slidably connected to the inner wall of the housing. The impurity guiding filter basket is in contact with the upper surface of the annular limiting plate (4). The impurity guiding filter basket is used to guide solid impurities to accumulate in the impurity guiding filter basket near the feed inlet. The outer wall of the impurity guiding filter basket is provided with a vortex generating component.

2. The petrochemical filtration device according to claim 1, characterized in that: The filter housing includes a filter housing (1), an inlet pipe (2), an outlet pipe (3), and a sealing cover (5). The inlet pipe (2) and the outlet pipe (3) are fixedly connected to both sides of the filter housing (1), and the filter housing (1), the inlet pipe (2), and the outlet pipe (3) are connected. The upper surface of the filter housing (1) is connected to the sealing cover (5), and the lower surface of the filter housing (1) is provided with the drain valve (6). The annular limiting plate (4) is fixedly connected to the inner wall of the filter housing (1).

3. A petrochemical filtration device according to claim 2, characterized in that: The impurity guiding filter basket is composed of an annular baffle plate (7), a basket filter screen (8), and a handle (9). The annular baffle plate (7) is slidably connected to the inner wall of the filter housing (1). The lower surface of the annular baffle plate (7) is in contact with the upper surface of the annular limiting plate (4), and the shape of the annular baffle plate (7) corresponds to that of the annular limiting plate (4). The handle (9) is fixedly connected to the upper surface of the annular baffle plate (7), and the basket filter screen (8) is fixedly connected to the lower surface of the annular baffle plate (7). The basket filter screen (8) has an opening facing upwards, and the middle section of the basket filter screen (8) is provided with a spiral-shaped concave bulge (10). The concave bulge (10) is used to guide solid impurities to accumulate in the basket filter screen (8) on the side close to the feed pipe (2).

4. A petrochemical filtration device according to claim 3, characterized in that: The chamfered end of the spiral-shaped concave bulge (10) in the middle section of the basket filter (8) faces the side of the basket filter (8) near the feed pipe (2).

5. A petrochemical filtration device according to claim 3, characterized in that: The annular limiting plate (4) is provided with multiple sets of compression springs (11), and the compression springs (11) are evenly distributed on the annular limiting plate (4). One end of the compression spring (11) is fixedly connected to the upper surface of the annular limiting plate (4), and the other end of the compression spring (11) is in contact with the annular blocking plate (7).

6. A petrochemical filtration device according to claim 3, characterized in that: The vortex generating component is a guide plate (12), the outer wall of the basket filter (8) is fixedly connected to the guide plate (12), and the guide plate (12) is "spiral".

7. A petrochemical filtration device according to claim 6, characterized in that: The pitch of the guide plate (12) is equal to the pitch of the spiral-shaped concave bulge (10) in the middle section of the basket filter (8), and the connection between the guide plate (12) and the middle section of the basket filter (8) is located below the spiral-shaped concave bulge (10) in the middle section of the basket filter (8).

8. A petrochemical filtration device according to claim 1, characterized in that: The drain valve (6) is located at the center of the lower surface of the filter housing.

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