CN114588697A - filter device - Google Patents

Abstract

The embodiment of the application discloses filter equipment belongs to oil gas gathering and transportation technical field. The filtering device comprises: the device comprises a cylinder body, a filter screen, a supporting assembly, a rotating shaft, a rotating blade and a cleaning grid; the side wall of the cylinder body is provided with a liquid inlet and a liquid outlet; the filter screen is fixed in the cylinder body and is used for dividing the inner cavity of the cylinder body into a liquid inlet cavity and a liquid outlet cavity; the supporting component is fixed in the cylinder body, the rotating shaft is rotatably connected with the supporting component, the rotating blades and the cleaning grids are located in the liquid inlet cavity, and the rotating blades and the cleaning grids are fixedly connected with the rotating shaft. In the embodiment of the application, when fluid got into the cylinder body, can make rotating vane rotatory, like this under rotating vane, rotation axis and clearance bars fixed connection's the condition, can drive the clearance bars through the rotation axis is rotatory indirectly to strike off the impurity of gathering on the filter screen through the clearance bars, realized the automatically cleaning of filter screen, avoided the dismantlement of filter screen, thereby avoided defeated pipeline's of collection stopping defeated, reduced operation personnel's work load simultaneously.

Description

filter device

technical field

The embodiments of the present application relate to the technical field of oil and gas gathering and transportation, and in particular, to a filtering device.

Background technique

In the process of oil and gas gathering and transportation, various pump equipment and metering instruments are usually installed on the gathering and transportation pipeline, and the oil or gas produced by the oil and gas field often contains different types of impurities, so the impurities in the oil or gas are easy to Enter the pump equipment and metering instruments, etc., thereby causing the failure of the pump equipment, reducing the service life of the pump equipment, and causing the measurement error of the metering instrument. Therefore, in the process of oil or gas gathering and transportation, it is necessary to filter the impurities in the oil or gas to prolong the service life of the pump equipment and reduce the measurement error of the metering instrument.

In the related art, a filter cylinder is usually installed upstream of the pump equipment and the metering instrument. The filter cylinder includes a cylinder block and a filter screen located in the cylinder block. The liquid inlet of the cylinder block is communicated with the upstream gathering and transportation pipeline. The liquid outlet is communicated with the downstream gathering pipeline. When the oil or air containing impurities passes through the filter cylinder, the impurities will be filtered through the filter screen, so as to prevent the impurities from entering the pump equipment and metering instruments.

After the filter cylinder is used for a period of time, in order to ensure the filtering effect of impurities, the filter screen needs to be disassembled to realize the replacement or cleaning of the filter screen. When removing the filter, it is necessary to stop the collection and transportation of oil or gas, which delays the production of oil or gas, and at the same time increases the workload of employees due to the removal and cleaning of the filter.

SUMMARY OF THE INVENTION

The embodiment of the present application provides a filter device, which can realize self-cleaning of impurities on the included filter screen, and avoid the problem of stopping the water supply due to replacement or cleaning of the filter screen. The technical solution is as follows:

The embodiment of the present application provides a filter device, the filter device includes: a cylinder block, a filter screen, a support assembly, a rotating shaft, a rotating blade and a cleaning grid;

The side wall of the cylinder has a liquid inlet and a liquid outlet, and the liquid outlet is located above the liquid inlet;

The filter screen is fixed in the cylinder, and is used to divide the inner cavity of the cylinder into a liquid inlet cavity and a liquid outlet cavity, the liquid inlet cavity is communicated with the liquid inlet, and the liquid outlet The cavity is communicated with the liquid outlet;

The support assembly is fixed in the cylinder, and the rotating shaft is rotatably connected with the support assembly;

The rotating blade and the cleaning grid are located in the liquid inlet chamber, and both the rotating blade and the cleaning grid are fixedly connected to the rotating shaft, and the fluid entering along the liquid inlet can cause the rotating blade to rotate , so as to drive the cleaning grid to rotate through the rotating shaft, and when the cleaning grid rotates, it is used to scrape off the impurities on the filter screen.

Optionally, the filter screen has a cylindrical structure with one end open;

An annular space is formed between the filter screen and the cylinder body, the open end of the filter screen is sealedly connected with the inner wall of the cylinder body, and the open end of the filter screen is located in the height direction of the cylinder body. between the liquid outlet and the liquid inlet.

Optionally, the open end of the filter screen faces downward, and the cleaning grid extends into the filter screen along the open end of the filter screen.

Optionally, the open end of the filter screen faces upwards, and the cleaning grid is buckled on the filter screen along the closed end of the filter screen.

Optionally, a sealing ring is sleeved at the open end of the filter screen, and the sealing ring is used to seal off the annular space.

Optionally, an annular partition is provided in the cylinder;

The outer edge of the annular partition is fixedly connected with the inner wall of the cylinder, and the annular partition is located between the liquid inlet and the liquid outlet in the height direction of the cylinder, and the The end face of the open end of the filter screen is in sealing contact with the annular partition.

Optionally, the inner edge of the annular partition plate has a bent portion facing the filter screen, the bent portion extends into the filter screen, and the bent portion can radially deform the filter screen. limit.

Optionally, the open end of the filter screen has an eversion edge, and the eversion edge is fixedly connected to the annular partition.

Optionally, the rotating shaft is rotatably connected to the closed end of the filter screen.

Optionally, the filter screen has a planar structure, the edge of the filter screen is sealed with the inner wall of the cylinder, and the filter screen is located at the liquid inlet and the between the liquid outlets.

Optionally, the support assembly includes at least two support frames;

The at least two support brackets are both fixed in the cylinder body along the radial direction of the cylinder body, and the rotation shafts are respectively rotatably connected with the at least two support brackets.

The beneficial effects of the technical solutions provided by the embodiments of the present application are:

In the embodiment of the present application, when the fluid enters the cylinder through the liquid inlet, the particles with larger density and volume in the fluid can directly settle at the bottom of the cylinder based on their own gravity. Due to the separation of the filter screen to the inner cavity of the cylinder, the fluid must be filtered by the filter screen and then flow out through the liquid outlet, thus ensuring that the filter screen can filter the impurities mixed in the fluid to prevent the fluid from flowing through the pump. Pump equipment failures and measurement errors caused by equipment and measuring instruments. When the fluid enters the cylinder, the high-speed flow of the fluid can impact the rotating blade to promote the rotation of the rotating blade. In this way, when the rotating blade is fixedly connected to the rotating shaft and the rotating shaft is fixedly connected to the cleaning grid, the rotating shaft can pass through the rotating shaft. Indirectly drives the cleaning grid to rotate, so that the impurities accumulated on the filter screen are scraped off by the cleaning grid, which realizes the self-cleaning of the filter screen, avoids the replacement and cleaning of the filter screen, and avoids the gathering and transportation pipeline caused by dismantling the filter screen. problems, while reducing the workload of operators.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only of the embodiments of the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a filtering device provided by an embodiment of the present application;

2 is a schematic structural diagram of another filtering device provided by an embodiment of the present application;

3 is a schematic structural diagram of another filter device provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of still another filtering device provided by an embodiment of the present application.

Reference number:

1: cylinder body; 2: filter screen; 3: support assembly; 4: rotating shaft; 5: rotating blade; 6: cleaning grid; 7; sealing ring;

11: liquid inlet; 12: liquid outlet; 13: annular partition; 14: sewage outlet;

31: supporting frame; 32: connecting bearing.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clear, the implementation of the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a filtering device according to an example of an embodiment of the present application. As shown in FIG. 1 , the filter device includes: a cylinder 1 , a filter screen 2 , a support assembly 3 , a rotating shaft 4 , a rotating blade 5 and a cleaning grid 6 . The side wall of the cylinder 1 has a liquid inlet 11 and a liquid outlet 12, and the liquid outlet 12 is located above the liquid inlet 11; the filter screen 2 is fixed in the cylinder 1 and is used to separate the inner cavity of the cylinder 1 It is a liquid inlet cavity and a liquid outlet cavity. The liquid inlet cavity is communicated with the liquid inlet 11, and the liquid outlet cavity is communicated with the liquid outlet 12; The rotating blade 5 and the cleaning grid 6 are located in the liquid inlet chamber, and both the rotating blade 5 and the cleaning grid 6 are fixedly connected with the rotating shaft 4; the fluid entering along the liquid inlet 11 can cause the rotating blade 5 to rotate, so as to drive the cleaning grid through the rotating shaft 4. 6 rotation, the cleaning grid 6 is used to scrape off the impurities on the filter screen 2 when it rotates.

In the embodiment of the present application, when the fluid enters the liquid inlet cavity in the cylinder block 1 through the liquid inlet 11, the particles with larger density and volume in the fluid can directly settle in the cylinder block 1 based on their own gravity. For the impurities mixed in the fluid, due to the separation of the inner cavity of the cylinder body 1 by the filter screen 2, the fluid must flow from the liquid inlet cavity in the cylinder body 1 through the filter screen 2 into the liquid outlet cavity, so as to realize the filter screen. 2. Filtration of the fluid, the filtered fluid flows out through the liquid port 12, thereby ensuring the filtering of the mixed impurities in the fluid by the filter screen 2, avoiding the failure of the pump equipment and the measurement error caused by the fluid flowing through the pump equipment and the metering instrument The problem. When the fluid enters the cylinder block 1, the high-speed flow of the fluid can impact the rotating blade 5 to cause the rotating blade 5 to rotate. In this way, the rotating blade 5 is fixedly connected to the rotating shaft 4 and the rotating shaft 4 is fixedly connected to the cleaning grid 6. The cleaning grid 6 can be indirectly driven to rotate through the rotating shaft 4, so that the impurities accumulated on the filter screen 2 can be scraped off through the cleaning grid 6, so that the self-cleaning of the filter screen 2 is realized while the fluid is filtered, and the filter screen 2 is avoided. It can be replaced and cleaned, thereby avoiding the problem of stoppage of the gathering and transportation pipeline caused by dismantling the filter screen 2, and at the same time reducing the workload of the operators.

Wherein, as shown in FIG. 1 , the bottom of the cylinder block 1 has a sewage outlet 14 so as to discharge the impurities settled in the cylinder block 1 through the sewage outlet 14 . Optionally, the blowdown port 14 is connected with a blowdown valve, so that for the impurities settled at the bottom of the cylinder 1, the blowdown valve can be opened to realize the external discharge of the impurities in the cylinder 1.

Optionally, the cylinder body 1 has a cylindrical structure with a contracted bottom, so that the impurities scraped from the filter screen 2 can better settle at the bottom of the cylinder body 1, so as to facilitate the subsequent discharge of impurities.

Optionally, the direction of the center line of the liquid inlet 11 is perpendicular to the axial direction and the radial direction of the cylinder block 1, so that the fluid entering along the liquid inlet 11 can impact on the rotating blade 5 in a direction perpendicular to the plane where the blades are located. superior. For example, the centerline direction of the liquid inlet 11 may be set along the tangential direction of the cylinder block 1 . At this time, the fluid entering along the liquid inlet 11 can impact the end of the rotating blade 5, that is, the end away from the center of rotation, which can further increase the impact torque of the fluid entering along the liquid inlet 11 on the rotating blade 5, so that At the same flow rate, the rotating speed of the rotating blade 5 is increased, thereby ensuring the rotating speed of the cleaning grid 6 and improving the scraping effect of the cleaning grid 6 on the impurities on the filter screen 2 .

In the embodiment of the present application, the size of the filter screen 2 can be set according to the inner diameter of the cylinder body 1, and the mesh number of the filter holes on the filter screen 2 can be determined according to the maximum particle size of impurities in the fluid required after filtration, so as to ensure filtering When the latter fluid flows through the pump equipment and the metering instrument, it will not cause the failure of the pump equipment and will not cause measurement errors.

In the embodiment of the present application, in order to facilitate the cleaning grid 6 to scrape off the impurities on the filter screen 2, the filter screen 2 may have a plane structure, a conical structure or a cylindrical structure to ensure that the projection surface of the filter screen 2 is circular, thereby The impurities accumulated on the entire filter surface of the filter screen 2 can be scraped off by the rotational movement of the cleaning grid 6 . The filter surface refers to the surface of the filter screen 2 facing the liquid inlet 11 .

In some embodiments, as shown in FIG. 2 , when the filter screen 2 is in a planar structure, the edge of the filter screen 2 is sealed with the inner wall of the cylinder 1 , and the filter screen 2 is located in the liquid inlet in the height direction of the cylinder 1 . Between the port 11 and the liquid outlet 12. At this time, the filter surface of the filter screen 2 is the lower surface, and the cleaning grid 6 is in contact with the lower surface of the filter screen 2 to scrape off impurities collected on the lower surface of the filter screen 2 when the cleaning grid 6 rotates.

The height direction of the cylinder block 1 refers to the axial direction of the cylinder block 1 . As shown in FIG. 2 , the cleaning grid 6 has a strip-shaped structure, and the midpoint position of the cleaning grid 6 is fixedly connected to the rotating shaft 4; The rotating shaft 4 is fixedly connected.

Of course, in addition to the above two structures, the cleaning grid 6 can also have other results, as long as the impurities accumulated on the lower surface of the filter screen 2 can be scraped off when the rotating shaft 4 drives the cleaning grid 6 to rotate. Do limit.

In the embodiment of the present application, when realizing the sealing connection between the edge of the filter screen 2 and the inner wall of the cylinder block 1, optionally, as shown in FIG. The edge is fixedly connected with the inner wall of the cylinder 1 , and the annular partition 13 is located between the liquid inlet 11 and the liquid outlet 12 in the height direction of the cylinder 1 , and the edge of the filter screen 2 is supported on the annular partition 13 . In this way, the sealing between the edge of the filter screen 2 and the inner wall of the cylinder 1 can be indirectly achieved through the sealing contact between the filter screen 2 and the annular partition 13 .

Wherein, when the cleaning grid 6 has a strip-like structure and the length of the cleaning grid 6 is equal to the inner diameter of the annular partition 13 , the midpoint position of the cleaning grid 6 is fixedly connected to the rotating shaft 4 .

Optionally, a sealing gasket may be arranged between the filter screen 2 and the annular partition plate 13 to ensure the sealing effect between the edge of the filter screen 2 and the annular partition plate 13, that is, to ensure that the edge of the filter screen 2 and the cylinder 1 The sealing effect between the inner walls.

Of course, in addition to realizing the sealing between the filter screen 2 and the inner wall of the cylinder 1 in the above-mentioned manner, the sealing can also be performed in other manners, which are not limited in this embodiment of the present application.

It should be noted that, for the sealing connection method described above, in order to realize the positioning of the filter screen 2, in the case where the inner wall of the cylinder block 1 has the annular partition plate 13, the edge of the filter screen 2 can be fixed to the annular partition plate 13. connection to realize the fixation of filter 2. For example, an extension portion is provided on the edge of the filter screen 2 , and the extension portion and the annular partition plate 13 are fixedly connected by bolts or the like, so as to realize the fixation of the filter screen 2 .

Of course, in addition to fixing the filter screen 2 in the above-mentioned manner, the length of the rotating shaft 4 can also be extended to the filter screen, so as to rotatably connect the rotating shaft 4 and the filter screen 2 . At this time, since the rotating shaft 4 is rotatably connected with the support assembly 3, the axial limit of the rotating shaft 4 is realized, so that after the rotating shaft 4 is connected with the filter screen 2, the axis of the filter screen 2 can be realized through the rotating shaft 4. to the limit, so as to realize the fixation of the filter screen 2.

Wherein, the rotating shaft 4 can be rotatably connected with the filter screen 2 through the connecting bearing, so that the sealing of the connection between the rotating shaft 4 and the filter screen 2 can be achieved while ensuring the rotation of the rotating shaft 4 .

In other embodiments, when the filter screen 2 has a conical structure, the edge of the filter screen 2 is sealedly connected to the inner wall of the cylinder 1, and the edge of the filter screen 2 is located at the liquid inlet 11 and the liquid inlet 11 in the height direction of the cylinder 1. between the liquid outlet 12.

The axial direction of the rotating shaft 4 coincides with the center line of the filter screen 2, so that when the rotating shaft 4 drives the cleaning grid 6 to rotate, the cleaning grid 6 can scrape off the impurities accumulated on the entire sidewall of the filter screen 2 to ensure The thoroughness of the scraping of impurities.

Optionally, for the conical filter screen 2, the open end of the filter screen 2 may be placed downward, or the open end of the filter screen 2 may be placed upward.

When the open end of the filter screen 2 faces downwards, the fluid flows from the inside of the filter screen 2 to the outside, and the impurities in the fluid gather on the inner wall of the filter screen 2 at this time. Therefore, in order to scrape off the impurities accumulated on the filter screen 2 , the cleaning grid 6 extends into the filter screen 2 along the open end of the filter screen 2 .

The cleaning grid 6 has a right-angled triangle structure. Of course, the cleaning grid 6 can also have other structures. For example, the cleaning grid 6 is an equi-triangular structure, or a structure composed of a plurality of right-angled triangles coaxially. Do limit.

When the open end of the filter screen 2 faces upwards, the fluid flows from the outside of the filter screen 2 to the inside, and the impurities in the fluid gather on the outer wall of the filter screen 2 at this time. Therefore, in order to scrape off the impurities accumulated on the filter screen 2 , the cleaning grid 6 is buckled on the filter screen 2 along the closed end of the filter screen 2 .

The cleaning grid 6 has an isosceles triangle structure. Of course, the cleaning grid 6 may also have other structures, which are not limited in the embodiment of the present application.

In the embodiment of the present application, when realizing the sealing connection between the open end of the filter screen 2 and the inner wall of the cylinder body 1, in the case that the opening of the conical filter screen 2 is facing downwards, refer to the corresponding corresponding to the above-mentioned filter screen 2 in a plane structure manner, which is not described repeatedly in this embodiment of the present application.

For the case where the opening of the conical filter screen 2 is upward, in the case that the inner wall of the cylinder 1 has the annular partition 13, the edge of the filter screen 2 can be provided with an eversion edge. 2 is hung upside down on the annular partition plate, so as to indirectly realize the sealing between the edge of the filter screen 2 and the inner wall of the cylinder 1 through the sealing contact between the everted edge and the annular partition plate 13 .

For the fixing of the conical filter screen 2, reference may be made to the above-mentioned embodiments, which are not limited in the embodiments of the present application.

In still other embodiments, as shown in FIG. 1 or FIG. 3 , the filter screen 2 has a cylindrical structure with one end open; at this time, the filter screen 2 and the cylinder 1 form an annular space, and the open end of the filter screen 2 is connected to the cylinder. The inner walls of the body 1 are sealed and connected, and the open end of the filter screen 2 is located between the liquid outlet 12 and the liquid inlet 11 in the height direction of the cylinder body 1 .

The cleaning grid 6 is in contact with the side wall of the filter screen 2, and the side wall of the filter screen 2 having a cylindrical structure has filter holes. Alternatively, the cleaning grid 6 is in contact with the side wall and the closed end of the filter screen 2, and both the side wall and the closed end of the filter screen 2 having a cylindrical structure have filter holes.

The axial direction of the rotating shaft 4 coincides with the center line of the filter screen 2, so that when the rotating shaft 4 drives the cleaning grid 6 to rotate, the cleaning grid 6 can scrape off the impurities accumulated on the entire sidewall of the filter screen 2, or The entire side wall and the closed end of the filter screen 2 are scraped off to ensure the completeness of the scraping of impurities.

In the embodiment of the present application, for the filter screen 2 with one end open, the open end of the filter screen 2 may be placed downward, or the open end of the filter screen 2 may be placed upward.

As shown in FIG. 3 , when the open end of the filter screen 2 faces downward, the fluid flows from the inside of the filter screen 2 to the outside, and the impurities in the fluid gather on the inner wall of the filter screen 2 at this time. Therefore, in order to scrape off the impurities accumulated on the filter screen 2 , the cleaning grid 6 extends into the filter screen 2 along the open end of the filter screen 2 .

The cleaning grid 6 has a rectangular structure. Of course, the cleaning grid 6 may also have other structures, and the cross section of the cleaning grid 6 is exemplified as a m-shaped structure, which is not limited in this embodiment of the present application.

When the open end of the filter screen 2 faces upwards, the fluid flows from the outside of the filter screen 2 to the inside, and the impurities in the fluid gather on the outer wall of the filter screen 2 at this time. Therefore, in order to scrape off the impurities accumulated on the filter screen 2 , the cleaning grid 6 is buckled on the filter screen 2 along the closed end of the filter screen 2 .

The cleaning grid 6 is a U-shaped structure. Of course, the cleaning grid 6 can also have other structures. For example, the cleaning grid 6 is an L-shaped structure or a structure composed of a plurality of U-shaped structures, which is not limited in the embodiments of the present application. As long as it can scrape off the impurities accumulated on the outer wall of the filter screen 2 .

In the embodiment of the present application, when realizing the sealing connection between the open end of the filter screen 2 and the inner wall of the cylinder block 1, optionally, as shown in FIG. 4, the open end of the filter screen 2 is sleeved with a sealing ring 7, and the sealing ring 7 is used to seal off the annular space. That is, the sealing between the outer wall of the filter screen 2 and the inner wall of the cylinder block 1 is realized by the sealing ring 7 .

Of course, in addition to the above-mentioned sealing through the sealing ring 7 , other methods can also be used for sealing. For example, as shown in FIG. 3 , the cylinder block 1 has an annular partition plate 13 ; the outer edge of the annular partition plate 13 is fixedly connected with the inner wall of the cylinder block 1 , and the annular partition plate 13 is located in the height direction of the cylinder block 1 . Between the liquid port 11 and the liquid outlet 12 , the end face of the open end of the filter screen 2 is in sealing contact with the annular partition plate 13 , so as to achieve a sealed connection between the open end of the filter screen 2 and the inner wall of the cylinder 1 .

Wherein, when the open end of the filter screen 2 faces downwards, the filter screen 2 is directly supported on the annular partition plate 13, so as to ensure the sealing contact between the end face of the open end of the filter screen 2 and the annular partition plate 13; When the end faces upwards, the open end of the filter screen 2 is provided with an eversion edge, and then hangs upside down on the annular baffle 13 through the eversion edge, so as to realize the sealing contact between the end face of the open end of the filter screen 2 and the annular baffle 13 .

Wherein, when the open end of the filter screen 2 is supported on the annular partition plate 13, the inner edge of the annular partition plate 13 has a bent portion facing the filter screen 2, the bent portion extends into the filter screen 2, and the bent portion can be used for filtering The net 2 is limited in the radial direction. A sealing gasket can be arranged between the open end of the filter screen 2 and the annular partition plate 13 to ensure the sealing effect between the end face of the open end of the filter screen 2 and the annular partition plate 13, thereby ensuring that the open end of the filter screen 2 and the cylinder 1 The sealing effect between the inner walls.

It should be noted that, in addition to realizing the sealing connection between the end face of the open end of the filter screen 2 and the inner wall of the cylinder 1 by any of the above two methods, of course, the above two methods can also be adaptively combined to achieve sealing. connection, or a sealed connection is achieved in other manners, which is not limited in this embodiment of the present application.

It should also be noted that, for the sealing connection method described above, in order to realize the positioning of the filter screen 2, in the case where the inner wall of the cylinder block 1 has an annular partition 13 and the open end of the filter screen 2 has an eversion edge, it can be The eversion edge is fixedly connected with the annular partition plate 13 to realize the fixation of the filter screen 2 .

Of course, in addition to the above-mentioned fixing of the filter screen 2, as shown in FIG. 3, the length of the rotating shaft 4 can also be extended to the closed end of the filter screen 2, so as to rotatably connect the rotating shaft 4 and the closed end of the filter screen 2. . At this time, since the rotating shaft 4 is rotatably connected with the support assembly 3, the axial limit of the rotating shaft 4 is realized, so that after the rotating shaft 4 is connected with the filter screen 2, the axis of the filter screen 2 can be realized through the rotating shaft 4. to the limit, so as to realize the fixation of the filter screen 2.

Wherein, the rotating shaft 4 can be rotatably connected with the filter screen 2 through the connecting bearing, so that the sealing of the connection between the rotating shaft 4 and the filter screen 2 can be achieved while ensuring the rotation of the rotating shaft 4 .

In the embodiment of the present application, as shown in FIG. 3 or FIG. 4 , the support assembly 3 includes at least two support frames 31 ; the at least two support frames 31 are both fixed in the cylinder block 1 along the radial direction of the cylinder block 1 , and the rotating shaft 4 They are respectively rotatably connected with at least two support frames 31 .

The support assembly 3 is located in the liquid inlet chamber or in the liquid outlet chamber. Of course, some of the support frames 31 included in the support assembly 3 are located in the liquid inlet chamber, and the remaining part of the support frame 31 is located in the liquid outlet chamber, which is not limited in the embodiment of the present application. .

Wherein, in order to realize the rotatable connection between the rotating shaft 4 and the support frame 31 , as shown in FIG. 3 or FIG. 4 , the support frame 31 is provided with a connecting bearing 32 . At this time, the outer ring of the connecting bearing 32 is fixedly connected to the support frame 31 , and the inner ring of the connecting bearing 32 is fixedly connected to the rotating shaft 4 .

Exemplarily, the support frame 31 is a support plate with a length equal to the inner diameter of the cylinder body 1 , and both ends of the support plate are fixedly connected to two connection points in the inner diameter direction of the cylinder body 1 respectively. At this time, the connection bearing 32 can be connected to the At the midpoint, to ensure that the axial direction of the rotating shaft 4 coincides with the centerline of the filter screen 2 .

Optionally, the support assembly 3 includes a first support frame 31 and a second support frame 31 , that is, the at least two support frames 31 include a first support frame 31 and a second support frame 31 , and the first support frame 31 and the second support frame 31 The support frames 31 are all located in the liquid inlet cavity, and the first support frame 31 and the second support frame 31 are located on both sides of the liquid inlet port 11 in the height direction of the cylinder block 1 . At this time, in order to ensure the rotation of the rotating blade 5, the rotating blade 5 is located between the first support frame 31 and the second support frame 31. In addition, in order to ensure that the cleaning grid 6 can filter the impurities on the filter screen 2, the cleaning grid 6 is located in the rotating The side of the blade 5 close to the filter screen 2.

Wherein, the first support frame 31 has a first connection bearing 32, the second support frame 31 has a second connection bearing 32, and the rotating shaft 4 is respectively connected with the first connecting bearing 32 and the second connecting bearing 32 to realize the rotating shaft 4 Stability when rotating.

In the embodiment of the present application, when the fluid enters the cylinder through the liquid inlet, the particles with larger density and volume in the fluid can directly settle at the bottom of the cylinder based on their own gravity. Due to the separation of the filter screen to the inner cavity of the cylinder, the fluid must be filtered by the filter screen and then flow out through the liquid outlet, thus ensuring that the filter screen can filter the impurities mixed in the fluid to prevent the fluid from flowing through the pump. Pump equipment failures and measurement errors caused by equipment and measuring instruments. When the fluid enters the cylinder, the high-speed flow of the fluid can impact the rotating blade to promote the rotation of the rotating blade. In this way, when the rotating blade is fixedly connected to the rotating shaft and the rotating shaft is fixedly connected to the cleaning grid, the rotating shaft can pass through the rotating shaft. Indirectly drive the cleaning grid to rotate, so that the impurities accumulated on the filter screen are scraped off by the cleaning grid, which realizes the self-cleaning of the filter screen, avoids the replacement and cleaning of the filter screen, and avoids the gathering and transportation pipeline caused by dismantling the filter screen. problems, while reducing the workload of operators.

The above descriptions are only optional embodiments of the embodiments of the present application, and are not intended to limit the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present application shall be It is included within the protection scope of the embodiments of the present application.

Claims (11)

1. A filter device, characterized in that the filter device comprises: a cylinder (1), a filter screen (2), a support assembly (3), a rotating shaft (4), a rotating blade (5) and a cleaning grid ( 6); The side wall of the cylinder body (1) has a liquid inlet (11) and a liquid outlet (12), and the liquid outlet (12) is located above the liquid inlet (11); The filter screen (2) is fixed in the cylinder body (1), and is used to separate the inner cavity of the cylinder body (1) into a liquid inlet cavity and a liquid outlet cavity, the liquid inlet cavity and the The liquid inlet (11) is in communication, and the liquid outlet cavity is in communication with the liquid outlet (12); The support assembly (3) is fixed in the cylinder body (1), and the rotating shaft (4) is rotatably connected with the support assembly (3); The rotating blade (5) and the cleaning grid (6) are located in the liquid inlet chamber, and both the rotating blade (5) and the cleaning grid (6) are fixedly connected with the rotating shaft (4), along the The fluid entering the liquid inlet (11) can cause the rotating blade (5) to rotate, so as to drive the cleaning grid (6) to rotate through the rotating shaft (4), when the cleaning grid (6) rotates Used to scrape off the impurities on the filter screen (2). 2. The filter device according to claim 1, wherein the filter screen (2) has a cylindrical structure with one end open; An annular space is formed between the filter screen (2) and the cylinder body (1), the open end of the filter screen (2) is sealedly connected with the inner wall of the cylinder body (1), and is in the cylinder body (1). 1) The open end of the filter screen (2) is located between the liquid outlet (12) and the liquid inlet (11) in the height direction. 3. The filter device according to claim 2, wherein the open end of the filter screen (2) faces downward, and the cleaning grid (6) extends into the space along the open end of the filter screen (2). inside the filter screen (2). 4. The filter device according to claim 2, characterized in that, the open end of the filter screen (2) faces upward, and the cleaning grid (6) is buckled at the closed end of the filter screen (2). on the filter screen (2). 5. The filter device according to any one of claims 2-4, wherein the open end of the filter screen (2) is sleeved with a sealing ring (7), and the sealing ring (7) is used for sealing off the annular space. 6. The filter device according to claim 2-4, characterized in that, an annular partition plate (13) is provided in the cylinder body (1); The outer edge of the annular partition (13) is fixedly connected with the inner wall of the cylinder (1), and the annular partition (13) is located in the liquid inlet in the height direction of the cylinder (1). Between the port (11) and the liquid outlet (12), the end face of the open end of the filter screen (2) is in sealing contact with the annular partition plate (13). 7. The filter device according to claim 6, wherein the inner edge of the annular partition plate (13) has a bent portion facing the filter screen (2), and the bent portion extends into the A filter screen (2), wherein the bending portion can limit the position of the filter screen (2) in the radial direction. 8. The filter device according to claim 6, characterized in that, the open end of the filter screen (2) has an eversion edge, and the eversion edge is fixedly connected with the annular partition plate (13). 9. The filter device according to claim 6, characterized in that, the rotating shaft (4) is rotatably connected to the closed end of the filter screen (2). 10. The filter device according to claim 1, characterized in that, the filter screen (2) has a planar structure, and the edge of the filter screen (2) is sealedly connected with the inner wall of the cylinder (1), The filter screen (2) is located between the liquid inlet (11) and the liquid outlet (12) in the height direction of the cylinder (1). 11. The filter device according to claim 1, characterized in that, the support assembly (3) comprises at least two support frames (31); The at least two support brackets (31) are both fixed in the cylinder body (1) along the radial direction of the cylinder body (1), and the rotating shaft (4) is respectively connected with the at least two support brackets ( 31) Rotatable connection.

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