Screen type oil sand filter pipe

Abstract

This invention discloses a screen-type oil filter pipe, relating to the field of oil production equipment technology. It includes a filter pipe body with an inlet end cap and an outlet end cap, and a turbulence impeller of a turbulence component to provide turbulence for the oil fed into the inlet end cap and apply rotational impact force to the turbulence impeller. A wire-wound screen tube of a separation component provides dynamic separation of the oil entering the filter pipe body, and a interception screen of a flow guiding component intercepts the dynamically separated sediment in the reverse direction. Under the impact force generated by the fed oil, this invention forces the turbulence impeller to rotate while simultaneously providing driving force, achieving two goals at once. Based on the rotating state, it simultaneously achieves turbulence, feeding, discharging, and spraying effects on the fed oil, forcing the oil and sediment of different particle sizes to be fully separated. Under the action of gear transmission, the wire-wound screen tube is forced to dynamically and quickly and effectively achieve the filtration effect on the separated oil and sediment of different particle sizes.

Description

Technical Field

[0001] This invention relates to the field of oil production equipment technology, and in particular to a screen-type oil filter pipe. Background Technology

[0002] Most underground oil fields are sandstone formations, which are composed of sand and rock cemented together. Crude oil is soaked in the gaps between sand grains. When extracting and pressurizing the crude oil in the sand grains, due to the loosening of the formation, fine sand, silt, and soil will flow into the wellbore along with the crude oil and formation water. Therefore, screen-type oil filter pipes are needed.

[0003] When using a screen-type oil filter pipe to filter oil mixed with mud and sand particles, a static filtration method is generally adopted to filter mud and sand of different particle sizes. Since the mud and sand particles are of different sizes, they are divided into coarse, medium and fine particles. This filtration method is not only relatively passive, but also prone to clogging, requiring frequent cleaning, which is quite troublesome. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing screen-type oil filter pipes, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to solve the clogging phenomenon caused by passive static filtration.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a screen-type oil filter pipe, comprising a filter pipe body with an oil inlet end cap and an oil outlet end cap, and a turbulence impeller of a turbulence component to provide turbulence measures for the oil fed into the oil inlet end cap and to apply a rotational impact force to the turbulence impeller, a wire-wound screen tube of a separation component to provide dynamic separation measures for the oil entering the filter pipe body, and a interception screen of a flow guiding component to reverse and intercept the mud and sand after dynamic separation.

[0008] As a preferred embodiment of the screen-type oil filter pipe of the present invention, the turbulence assembly further includes an oil inlet head opened at the outer end of the turbulence impeller, and a buffer cavity communicating with the oil inlet head is opened in the turbulence impeller. A turbulence cylinder frame is horizontally placed on the inner side of the turbulence impeller, and an oil delivery blade is sleeved on the turbulence cylinder frame. The oil delivery blade is designed in a spiral shape along the transverse axis of the turbulence cylinder frame.

[0009] As a preferred embodiment of the screen-type oil filter pipe of the present invention, the following features: a centrifugal cavity communicating with the buffer cavity is provided inside the turbulence frame, and oil nozzles communicating with the centrifugal cavity are provided on the turbulence frame in a triangular equidistant shape, with the oil nozzles and oil delivery blades interlaced; an oil filter head communicating with the centrifugal cavity is provided on the outer side of the turbulence frame, and is located on the same horizontal line as the oil inlet head.

[0010] As a preferred embodiment of the screen-type oil filter pipe of the present invention, the separation component further includes a main spherical gear sleeved on the side of the turbulence cylinder frame near the turbulence impeller, and a differential gear meshing on the outer side of the main spherical gear. The three sets of differential gears are distributed in a triangular equidistant state along the transverse axis of the main spherical gear, and a gear ring meshing on the outer side of the differential gear.

[0011] As a preferred embodiment of the screen-type oil filter pipe of the present invention, a sealed cavity is provided on the inner side of the filter pipe body near the oil inlet end cap, and the main spur gear and the differential gear rotate in a sealed manner within the sealed cavity. A convex end is fixed annularly on the outer side of the gear ring, and a concave groove that rotates with the convex end is provided annularly within the sealed cavity.

[0012] As a preferred embodiment of the screen-type oil filter pipe of the present invention, wherein: the inner side of the toothed ring is fixed with a connecting member that is sealed and rotates with the filter pipe body, and the connecting member is fixed with the wire-wound screen pipe; the outer side of the wire-wound screen pipe is fixed with a support member that is sealed and rotates with the filter pipe body, and the wire-wound screen pipe is located outside the oil delivery blade.

[0013] As a preferred embodiment of the screen-type oil filter pipe of the present invention, the flow guiding component further includes an oil inlet in a triangular equidistant shape opened on the inner side of the filter pipe body near the oil inlet end cap, and is staggered with the three sets of differential gears, and a pressure relief head is embedded in the oil inlet, and a frustum-shaped pressure relief port is opened in the three sets of pressure relief heads.

[0014] As a preferred embodiment of the screen-type oil filter pipe of the present invention, wherein: a skeleton rod is horizontally arranged inside the three sets of differential gears and rotates in a sealed manner with the filter pipe body, and a flow guide is horizontally arranged on the skeleton rod; the three sets of flow guides are arrayed with flow guide ports between each other, and a cleaning strip that cooperates with the cleaning of the wire-wound screen pipe is horizontally arranged on the outside of the flow guide.

[0015] As a preferred embodiment of the screen-type oil filter pipe of the present invention, the inner end of the intercepting screen is provided with an inner screen hole in a circumferential array, and the outer end of the intercepting screen is provided with an outer screen hole in a circumferential array. The inner screen hole and the outer screen hole are in a state of communication. The diameter of the inner screen hole is larger than the diameter of the outer screen hole, and a stepped interception zone is formed between the inner screen hole and the outer screen hole.

[0016] As a preferred embodiment of the screen-type oil filter pipe of the present invention, a separation zone is reserved between the intercepting screen and the winding screen pipe, an oil delivery zone is reserved between the winding screen pipe and the turbulence cylinder frame, and a mud and sand zone is reserved between the intercepting screen and the filter pipe body. The filter pipe body is provided with cleaning windows for cleaning the mud and sand zone in a triangular equidistant shape, and a sealing cover plate is fixed to the outside of the cleaning window by screws.

[0017] The beneficial effects of this invention are as follows: Under the impact force generated by the feed oil, the turbulence impeller is forced to rotate and turbulent the flow, while simultaneously providing driving force, achieving two goals at once. Based on the rotation state, the feed oil simultaneously achieves turbulence, feeding, and spraying effects, forcing the oil and the mud and sand of different particle sizes within it to be fully separated. Under the action of gear transmission, the wire-wound screen tube is forced to achieve a rapid and effective filtration effect on the separated oil and mud and sand of different particle sizes in a dynamic manner. Furthermore, dynamic guiding, cleaning, and interception methods are adopted to prevent mud and sand from clogging while also intercepting the filtered mud and sand in the reverse direction, forming an active dynamic filtration mechanism to prevent the mud and sand from remixing with the oil. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a bottom view of the overall structure of a screen-type oil filter pipe.

[0020] Figure 2 This is a top view of the overall structure of a screen-type oil filter pipe.

[0021] Figure 3 This is an exploded view of the overall structure of a screen-type oil filter pipe.

[0022] Figure 4 This is a sectional view of the filter pipe body and flow guiding components of a screen-type oil filter pipe.

[0023] Figure 5 This is a partial cross-sectional view of the filter pipe body of a screen-type oil filter pipe.

[0024] Figure 6 Side view of the turbulence and separation components of a screen-type oil filter pipe.

[0025] Figure 7 This is a partial top view of the turbulence-dispersing, separation, and flow-guiding components of a screen-type oil filter pipe.

[0026] Figure 8This is a partial top-view cross-sectional view of the turbulence-causing component of a screen-type oil filter pipe.

[0027] Figure 9 This is a partial top-down exploded view of the separation component of a screen-type oil filter pipe.

[0028] In the diagram: 1. Oil inlet cap; 2. Oil outlet cap; 3. Sand filter pipe; 41. Turbulence impeller; 42. Oil inlet head; 43. Buffer cavity; 44. Turbulence cylinder frame; 45. Oil delivery blades; 46. Centrifugal cavity; 47. Oil injector; 48. Oil filter head; 51. Sealing cavity; 52. Main spur gear; 53. Differential gear; 54. Gear ring; 55. Connecting piece; 56. Wire-wound screen tube; 57. Support piece; 61. Pressure relief head; 62. Skeleton rod; 63. Flow guide frame; 64. Flow guide port; 65. Cleaning strip; 66. Retention screen; 67. Inner screen hole; 68. Outer screen hole; 7. Sealing cover plate; 8. Water-swellable sealing ring; 9. Coarse filter screen plate; 10. Flow equalization screen plate. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, referring to Figures 1-9 This is the first embodiment of the present invention, which provides a screen-type oil filter pipe, including a filter pipe body 3 with an oil inlet end cap 1 and an oil outlet end cap 2. The oil inlet end cap 1 is unidirectionally connected to the oil production pipeline in the well, and the oil outlet end cap 2 is unidirectionally connected to the oil delivery pipeline outside the well. The outer ends of the oil inlet end cap 1 and the oil outlet end cap 2 are both embedded with water-swellable sealing rings 8. According to the principle of water expansion, the water-swellable sealing rings 8 expand and seal the connection between the oil inlet end cap 1 and the oil production pipeline in the well, as well as the connection between the oil outlet end cap 2 and the oil delivery pipeline outside the well, in the event of oil leakage, so as to avoid oil leakage and waste.

[0033] The oil inlet end cap 1 is equipped with a coarse filter plate 9. Through the external oil delivery pipeline, the large particles of mud and sand in the oil supplied to the oil inlet end cap 1 by the pressurized oil production pipeline in the well are pre-intercepted and filtered to prevent large particles of mud and sand from entering and causing pipe blockage. It also reduces the mud and sand screening burden on the oil entering the sand filter pipe 3.

[0034] The oil discharge end cap 2 is embedded with a flow equalization mesh plate 10. The flow equalization mesh plate 10 plays a role in equalizing the flow of oil after the sludge and sand have been screened, so as to avoid the oil after screening from becoming turbulent at the oil discharge end cap 2 due to excessive pressure, which would be detrimental to the oil supply and discharge, and also prevent the oil from flowing back into the sand filter pipe body 3 due to turbulent impact.

[0035] Furthermore, the turbulence impeller 41 of the turbulence assembly provides turbulence measures for the oil fed into the oil inlet end cover 1 and applies rotational impact force to the turbulence impeller 41, achieving two goals at once. This provides mechanical drive convenience for the subsequent screening of mud and sand in the oil entering the sand filter pipe 3, and maintains a dynamic screening state, eliminating the difficult maintenance and high failure rate caused by the traditional electric drive method.

[0036] Specifically, it also includes an oil inlet head 42 located at the outer end of the turbulence impeller 41, and a buffer cavity 43 connected to the oil inlet head 42 is provided inside the turbulence impeller 41. When oil carrying mud and sand in the well-external oil pipeline flows into the sand filter pipe body 3 under high pressure through the oil inlet end cover 1, large particles of mud and sand are intercepted by the coarse filter screen 9 before reaching the turbulence impeller 41 area. Under the impact force of the oil flowing in under high pressure, the turbulence impeller 41 is forced to rotate, thus turbulenting the passing oil.

[0037] At the same time, some oil also enters the buffer cavity 43 inside the rotating turbulence impeller 41 through the oil inlet head 42, which serves as an auxiliary channel. This buffer cavity 43 is used to release the pressure of the oil that is rushing into the buffer cavity 43 under high pressure, so as to prevent the oil that subsequently enters the filter sand pipe body 3 from maintaining a high pressure state and causing turbulence and chaos in the oil and its internal sediment.

[0038] Specifically, it also includes the use of triangular equidistant oil inlets located on the inner side of the filter sand pipe body 3 near the oil inlet end cap 1. The three sets of oil inlets serve as the main channels for oil to enter the filter sand pipe body 3, while the oil inlet head 42 on the turbulence impeller 41 serves as the auxiliary channel, thereby achieving a multi-channel zoned oil supply effect.

[0039] Furthermore, the oil inlet is embedded with a pressure relief head 61. The three pressure relief heads 61 have frustum-shaped pressure relief ports, and the diameter of the frustum-shaped pressure relief ports adopts an outer small and inner large design. The oil flows from the oil inlet, which serves as the main channel, through the pressure relief head 61 with the outer small and inner large design. The oil that has entered the sand filter pipe 3 under high pressure through the main channel is subjected to pressure relief and buffering treatment. This ensures that the oil is effectively depressurized and kept stable after entering through multiple channels, preventing the oil and the sediment in it from being in a chaotic state, which is conducive to subsequent dynamic screening work.

[0040] A turbulence-prone frame 44 is horizontally mounted on the inner side of the turbulence-prone impeller 41, and an oil delivery blade 45 is fitted on the turbulence-prone frame 44. The oil delivery blade 45 is designed in a spiral along the horizontal axis of the turbulence-prone frame 44. The turbulence-prone impeller 41, which is in a rotating state, drives the turbulence-prone frame 44 to rotate synchronously. This effectively transports the oil supplied to the filter sand pipe body 3 from the main channel, preventing the oil from stagnating in the filter sand pipe body 3 and affecting the subsequent oil supply.

[0041] Meanwhile, the spiral oil delivery blades 45, which rotate with the turbulence cylinder frame 44, break up and refine the medium and large particles of silt in the passing oil, reducing the particle size of the silt and facilitating the screening operation of the silt after fine treatment. This effectively prevents clogging and shortens the silt screening process.

[0042] Specifically, the turbulence cylinder frame 44 has a centrifugal cavity 46 that communicates with the buffer cavity 43. The turbulence cylinder frame 44 has triangularly spaced oil nozzles 47 that communicate with the centrifugal cavity 46. The oil nozzles 47 and the oil delivery blades 45 are staggered. The oil that enters the buffer cavity 43 through the auxiliary channel then reaches the centrifugal cavity 46. The turbulence cylinder frame 44, which is rotating, applies centrifugal force to the oil and its sediment in the centrifugal cavity 46. Then, the triangularly spaced oil nozzles 47 spray the oil evenly and comprehensively into the screening area of ​​the wire-wound screen tube 56 to prepare for dynamic screening. At the same time, the oil and sediment in the static oil near the turbulence cylinder frame 44 are sprayed and impacted into the wire-wound screen tube 56 area for a more comprehensive effect.

[0043] An oil filter head 48, which communicates with the centrifugal cavity 46, is provided on the outer side of the turbulence cylinder frame 44 and is located on the same horizontal line as the oil inlet head 42. The oil and silt that reach the centrifugal cavity 46 can also be directly filtered and discharged by the oil filter head 48, which reduces the oil supply and discharge pressure in the centrifugal cavity 46 and increases the centrifugal filtration channel for the oil in the centrifugal cavity 46. This prevents the oil that reaches the centrifugal cavity 46 from being blocked and generating high pressure, which would cause the oil to backflow and impact in the centrifugal cavity 46, affecting the subsequent oil supply to the oil inlet head 42, which serves as an auxiliary channel.

[0044] Example 2, refer to Figures 1-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0045] The wire-wound screen tube 56 of the separation component provides dynamic separation measures for the oil entering the sand filter tube 3, and achieves rapid and effective filtration of the separated oil and mud and sand of different particle sizes.

[0046] Specifically, it also includes a main sprocket 52 mounted on the side of the turbulence cylinder frame 44 near the turbulence impeller 41, and a differential gear 53 meshing on the outer side of the main sprocket 52. A sealed cavity 51 is opened on the inner side of the filter pipe body 3 near the oil inlet end cover 1, and the main sprocket 52 and the differential gear 53 rotate in a sealed environment within the sealed cavity 51. The oil inlet and the three sets of differential gears 53 are staggered. On the one hand, this ensures that the three sets of differential gears 53 are always in a sealed environment to avoid oil corrosion and mud and sand blockage, and on the other hand, it provides the main flow channel for oil carrying mud and sand into the filter pipe body 3.

[0047] Three sets of differential gears 53 are distributed in a triangular equidistant manner along the transverse axis of the main spur gear 52, and a gear ring 54 meshes on the outer side of the differential gear 53. A convex end is fixed on the outer side of the gear ring 54, and a concave groove that rotates with the convex end is opened in the sealed cavity 51. Through the convex end and the concave groove, the gear ring 54 in the rotating state plays a rotational support role, forcing the gear ring 54 to rotate stably in the sealed environment formed by the sealed cavity 51.

[0048] In use: The turbulent impeller 41, which rotates due to the impact of oil, drives three sets of differential gears 53 to rotate at different speeds through the main spherical gear 52. The three sets of differential gears 53 rotate at different speeds, which in turn drive the gear ring 54 to rotate, providing rotational force for the dynamic screening of the wire-wound screen tube 56, forcing the wire-wound screen tube 56 to always maintain rotation.

[0049] Specifically, the inner side of the gear ring 54 is fixed with a connecting piece 55 that rotates in a sealed manner with the filter sand tube body 3, and the connecting piece 55 is fixed with the wire-wound screen tube 56. The gear ring 54 drives the wire-wound screen tube 56 to rotate in a sealed manner through the connecting piece 55, so as to prevent the oil and silt in the filter sand tube body 3 from entering and causing corrosion and jamming to the gear ring 54 and its internal gears.

[0050] The outer side of the wire-wound screen tube 56 is fixed with a support member 57 that rotates in a sealed manner with the sand filter tube body 3. The support member 57 stabilizes the rotating wire-wound screen tube 56, improves its rotational stability, and prevents it from tilting. At the same time, the support member 57 seals the other end of the wire-wound screen tube 56. Combined with the connector 55, a double sealing rotation measure is applied to both ends of the wire-wound screen tube 56.

[0051] Furthermore, the wire-wound screen tube 56 is located outside the oil delivery blade 45. By utilizing the dynamically rotating wire-wound screen tube 56, the oil and its sediment around the oil delivery blade 45 are effectively screened and separated. The oil is retained inside the wire-wound screen tube 56, while the sediment is rotated and screened to the outside of the wire-wound screen tube 56.

[0052] Example 3, referring to Figures 1-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0053] The interception screen 66 of the flow guiding component intercepts the dynamically separated mud and sand in the reverse direction. It adopts dynamic flow guiding, cleaning and interception methods to prevent mud and sand from clogging. At the same time, it also intercepts the screened mud and sand in the reverse direction, forming an active dynamic screening mechanism to prevent mud and sand from remixing with oil.

[0054] Specifically, the three sets of differential gears 53 have horizontally placed skeleton rods 62 that rotate in a sealed manner with the sand filter tube body 3, and a guide frame 63 is horizontally placed on the skeleton rods 62. The three sets of differential gears 53, which rotate at different speeds, drive the guide frame 63 on them through the three skeleton rods 62 to effectively rotate and guide the oil and its sediment between the wire-wound screen tube 56 and the turbulence cylinder frame 44. This forces the sediment in the oil to quickly pass through the wire-wound screen tube 56 and reach its outer side, preventing large particles of sediment from settling and accumulating in the turbulence cylinder frame 44 area, which would affect the normal supply and discharge of the filtered oil.

[0055] The three sets of guide frames 63 are arrayed with guide ports 64. Through the guide ports 64, the oil and its sediment during the flow process of the three sets of guide frames 63 are provided with channel support, which facilitates the dispersing of sediment mixed in the oil and provides convenience for the dynamic filtration of oil and its sediment by the wire-wound screen tube 56.

[0056] Furthermore, a cleaning strip 65 is horizontally placed on the outer side of the flow guide frame 63 to cooperate with the cleaning of the wire-wound screen tube 56. The cleaning strip 65, which rotates with the three sets of flow guide frames 63, and the wire-wound screen tube 56, which always rotates, adopt a synchronous rotation method to continuously scrape and clean the mud and sand attached to and blocked on the inner wall of the wire-wound screen tube 56, thereby improving the mud and sand passing performance and filtration performance of the wire-wound screen tube 56.

[0057] The turbulence frame 44, main spherical gear 52, three sets of differential gears 53, gear ring 54, connecting part 55, support part 57, wire-wound screen tube 56, three skeleton rods 62, flow guide frame 63 and cleaning strip 65 are all made of lightweight high-strength composite materials, with high-strength aluminum alloy being the best material. It can withstand the complex environment of downhole oil, reduce the overall weight of the main spherical gear 52, three sets of differential gears 53, gear ring 54, connecting part 55, support part 57 and wire-wound screen tube 56, and at the same time reduce the driving burden of the turbulence impeller 41.

[0058] The inner end of the intercepting screen 66 is provided with inner screen holes 67 in a circumferential array, and the outer end of the intercepting screen 66 is provided with outer screen holes 68 in a circumferential array. The inner screen holes 67 and the outer screen holes 68 are in a state of communication. The aperture of the inner screen holes 67 is larger than the aperture of the outer screen holes 68, and a stepped interception zone is formed between the inner screen holes 67 and the outer screen holes 68.

[0059] The rotating wire-wound screen tube 56 centrifugally guides the oil and its sediment to the interception screen 66 area. The oil and sediment, from the large-diameter inner screen hole 67, through the small-diameter outer screen hole 68 outside the stepped interception area, reach the outside of the interception screen 66. Thus, sediment of different particle sizes is intercepted outside the small-diameter outer screen hole 68. Under the centrifugal guiding force generated by the constantly rotating wire-wound screen tube 56 and the guide frame 63, the sediment intercepted outside the interception screen 66 is forced to never flow back to the inside of the interception screen 66.

[0060] Conversely, oil reaching the small-diameter outer screen hole 68 flows back to the inner side of the interception screen 66 through the large-diameter inner screen hole 67 inside the stepped interception zone, and continues to be filtered by the always dynamically rotating wire-wound screen tube 56. This process is repeated, and combined with the rotating dynamically rotating wire-wound screen tube 56 and the turbulence-inducing cylinder frame 44, an active dynamic filtration mechanism is formed until all the mud and sand in the oil are dynamically filtered out.

[0061] Specifically, a separation zone is reserved between the intercepting screen 66 and the wire-wound screen tube 56 for dynamic screening and separation of oil and silt. An oil delivery zone is reserved between the wire-wound screen tube 56 and the turbulence frame 44 for the supply and discharge of oil after continuous screening of silt. A silt zone is reserved between the intercepting screen 66 and the sand filter tube 3 for the temporary storage of intercepted silt. The whole system realizes the zoned operation of pure oil, oil + silt and pure silt.

[0062] The filter pipe body 3 has triangularly spaced cleaning windows for cleaning the mud and sand area. The outer side of the cleaning window is fixed with a sealing cover 7 by screws. By periodically opening the sealing cover 7 on the cleaning window, the mud and sand temporarily stored in the mud and sand area can be cleaned. As for the mud and sand in the intercepting screen 66, the wire winding screen tube 56 and the turbulence cylinder frame 44 area, after disassembling the oil inlet end cover 1 and the oil outlet end cover 2, the whole body can be cleaned by water impact cleaning.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A screen-type oil filter pipe, characterized in that: include, The filter pipe body (3) with oil inlet end cap (1) and oil outlet end cap (2), and the turbulence impeller (41) of the turbulence assembly provide turbulence measures for the oil fed into the oil inlet end cap (1) and apply rotational impact force to the turbulence impeller (41). The wire-wound screen tube (56) of the separation assembly provides dynamic separation measures for the oil entering the filter pipe body (3), and the interception screen (66) of the flow guiding assembly intercepts the mud and sand after dynamic separation in the reverse direction.

2. The screen-type oil filter pipe as described in claim 1, characterized in that: The turbulence assembly also includes an oil inlet head (42) located at the outer end of the turbulence impeller (41), and a buffer cavity (43) communicating with the oil inlet head (42) is provided inside the turbulence impeller (41). A turbulence cylinder frame (44) is horizontally placed on the inner side of the turbulence impeller (41), and an oil delivery blade (45) is sleeved on the turbulence cylinder frame (44). The oil delivery blade (45) is designed in a spiral shape along the transverse axis of the turbulence cylinder frame (44).

3. The screen-type oil filter pipe as described in claim 2, characterized in that: The turbulence frame (44) has a centrifugal cavity (46) that communicates with the buffer cavity (43), and the turbulence frame (44) has an oil nozzle (47) that communicates with the centrifugal cavity (46) in a triangular equidistant shape. The oil nozzle (47) and the oil delivery blade (45) are staggered. The outer side of the turbulence frame (44) has an oil filter head (48) that communicates with the centrifugal cavity (46) and is located on the same horizontal line as the oil inlet head (42).

4. The screen-type oil filter pipe as described in claim 2, characterized in that: The separation assembly also includes a main sprocket gear (52) sleeved on the side of the turbulence cylinder frame (44) near the turbulence impeller (41), and a differential gear (53) meshes on the outer side of the main sprocket gear (52). The three sets of differential gears (53) are distributed in a triangular equidistant state along the transverse axis of the main sprocket gear (52), and a gear ring (54) meshes on the outer side of the differential gear (53).

5. The screen-type oil filter pipe as described in claim 4, characterized in that: The filter pipe body (3) has a sealed cavity (51) on the inner side near the oil inlet end cap (1), and the main spur gear (52) and the differential gear (53) rotate in a sealed manner in the sealed cavity (51). The outer side of the gear ring (54) is fixed with a convex end, and the sealed cavity (51) has a concave groove that rotates with the convex end.

6. The screen-type oil filter pipe as described in claim 4, characterized in that: The inner side of the toothed ring (54) is fixed with a connecting piece (55) that rotates in a sealed manner with the sand filter tube (3), and the connecting piece (55) is fixed with the wire-wound screen tube (56). The outer side of the wire-wound screen tube (56) is fixed with a support piece (57) that rotates in a sealed manner with the sand filter tube (3), and the wire-wound screen tube (56) is located outside the oil delivery blade (45).

7. The screen-type oil filter pipe as described in claim 4, characterized in that: The flow guiding component also includes an oil inlet in a triangular equidistant shape located on the inner side of the filter sand pipe (3) near the oil inlet end cap (1), and is staggered with the three sets of differential gears (53). The oil inlet is equipped with a pressure relief head (61), and the three sets of pressure relief heads (61) are provided with frustum-shaped pressure relief ports.

8. The screen-type oil filter pipe as described in claim 4, characterized in that: The three sets of differential gears (53) have a skeleton rod (62) that rotates in a sealed manner with the sand filter tube (3) and a guide frame (63) is placed horizontally on the skeleton rod (62). The three sets of guide frames (63) are arranged with guide ports (64) in an array between each other, and a cleaning strip (65) that cooperates with the cleaning of the wire-wound screen tube (56) is placed horizontally on the outside of the guide frame (63).

9. The screen-type oil filter pipe as described in claim 1, characterized in that: The inner end of the intercepting screen (66) is provided with inner screen holes (67) in a circumferential array, and the outer end of the intercepting screen (66) is provided with outer screen holes (68) in a circumferential array. The inner screen holes (67) and the outer screen holes (68) are in a state of communication. The aperture of the inner screen holes (67) is larger than the aperture of the outer screen holes (68), and a stepped interception zone is formed between the inner screen holes (67) and the outer screen holes (68).

10. The screen-type oil filter pipe as described in claim 1, characterized in that: A separation zone is reserved between the intercepting screen (66) and the winding screen tube (56), an oil delivery zone is reserved between the winding screen tube (56) and the turbulence cylinder frame (44), and a mud and sand zone is reserved between the intercepting screen (66) and the sand filter tube (3). The sand filter tube (3) is provided with cleaning windows for cleaning the mud and sand zone in a triangular equidistant shape, and a sealing cover plate (7) is fixed to the outside of the cleaning window by screws.

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