Drilling filtration devices and systems

Abstract

The present invention relates to the technical field of mud treatment, and in particular to a drilling filtering device, comprising a slag box, an outer cylinder is provided on the slag box, the lower end of the outer cylinder is open and connected to the slag box; a cylindrical and vertically arranged filter screen is provided in the outer cylinder, and the lower end of the filter screen is sealed; a supporting structure is provided at the lower end of the inner part of the outer cylinder and has a supporting part abutting against the lower end of the filter screen to limit the vertical position of the filter screen; a water outlet is provided at the upper end of the outer cylinder and the water outlet is connected to the upper end of the filter screen; a cylindrical supporting frame member is provided in the outer cylinder, and the supporting frame member can be horizontally rotatably sleeved on the outside of the filter screen; the present invention also discloses a drilling filtering system. The present invention has the characteristics of simple structure, more stable and reliable filtering effect, and can better meet the requirements of energy saving and environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of mud treatment, in particular to a drilling filtering device and system. Background Art

[0002] Drilling refers to the use of a drilling rig to drill holes (wells) underground, taking out rock and ore samples from different depths (commonly known as cores or ore cores, and rock cuttings are taken out during oil exploration), or using instruments to conduct observations in the holes (wells) to provide necessary data for geological and mineral research.

[0003] In drilling construction, taking municipal road survey drilling as an example, the return water (mud sewage) from drilling construction cannot meet the discharge requirements well, so it needs to be treated before discharge. In the prior art, Chinese patent (CN208578530U) discloses a mud circulation filtration device for drilling construction; Chinese patent (CN210509084U) discloses a mud filtration device for geological core drilling; Chinese patent (CN203702039U) discloses a mud filtration device for drilling equipment. However, the above devices have the disadvantages of complex structural design, unstable filtration effect, and poor energy saving and environmental protection.

[0004] Therefore, how to provide a drilling filtration device and system with a simple structure, a more stable and reliable filtering effect, and the ability to better meet energy-saving and environmental protection requirements has become a technical problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is how to provide a drilling filtration device and system with a simple structure, a more stable and reliable filtering effect, and the ability to better meet the requirements of energy saving and environmental protection.

[0006] To achieve the above-mentioned purpose, the present invention provides a drilling filtering device, including a slag box, which is characterized in that an outer cylinder is provided on the slag box, the lower end of the outer cylinder is open and connected to the slag box; a cylindrical and vertically arranged filter screen is provided in the outer cylinder, and the lower end of the filter screen is sealed; a supporting structure is provided at the lower end of the inner part of the outer cylinder and has a supporting part abutting against the lower end of the filter screen to limit the vertical position of the filter screen; a water outlet is provided at the upper end of the outer cylinder and the water outlet is connected to the upper end of the filter screen; a supporting frame member that is cylindrical as a whole is provided in the outer cylinder, and the supporting frame member can be horizontally rotatably sleeved on the outside of the filter screen; one or more vertically arranged scraping strips are distributed at intervals on the inner circumferential surface of the supporting frame member, and the inner side of the scraping strip can contact the outer circumferential surface of the filter screen; two or more fan blades are distributed at intervals on the outer circumferential surface of the upper end of the supporting frame member and along the circumferential direction, a water inlet is provided at the upper end of the outer cylinder, and a guide plate is provided on the inner circumferential wall of the outer cylinder and horizontally corresponding to the water inlet, and the guide plate is located below the fan blade.

[0007] In this way, when the above-mentioned drilling and filtering device is working, the sewage (mud) discharged from the upper end of the borehole enters from the water inlet at the upper end of the outer cylinder, and the sewage can fill the inner cavity of the entire device after entering. After that, the filter can filter the sewage, and the filtered sewage enters the inner side of the filter. The external sewage is continuously supplied, and sewage is continuously filtered so that the sewage inside the filter is discharged from the water outlet at the upper end. The slag and large particles in the sewage can settle and enter the slag box. While the filter completes the filtration of the sewage, slag and large particles will be attached to the outer surface of the filter. When sewage enters from the water inlet at the upper end of the outer cylinder, the guide plate inside the outer cylinder and located below the water inlet can guide the sewage, so that the sewage has a horizontal flow direction after entering the outer cylinder, and the sewage impacts the fan blades to make the supporting frame member and the fan blades on the supporting frame member rotate horizontally. After the supporting frame member rotates horizontally, the scraper strips on the supporting frame member contact with the outer circumferential surface of the filter screen and can clean the filter screen, and can scrape off the residue and large particles attached to the outer surface of the filter screen, so that the cleaned residue and large particles are precipitated and enter the slag box. In the above device, a supporting frame member in an overall cylindrical shape is provided in the outer cylinder, and the supporting frame member is horizontally rotatably sleeved on the outside of the filter screen; one or more scraping strips are spaced apart on the inner circumferential surface of the supporting frame member and are vertically arranged, so that the inner side of the scraping strips can contact the outer circumferential surface of the filter screen; two or more fan blades are spaced apart on the outer circumferential surface of the upper end of the supporting frame member and are spaced apart along the circumferential direction, and a guide plate is horizontally provided on the inner circumferential wall of the outer cylinder corresponding to the water inlet, and the guide plate is located below the fan blade. In this way, the sewage entering from the water inlet can impact the blades and provide power to rotate the supporting frame member horizontally. While filtering the sewage, the filter screen is also cleaned, which can better ensure the normal filtering work of the filter screen, improve the filtering effect, and improve the sewage treatment capacity. And no additional kinetic energy is required, and the entire device is more environmentally friendly and energy-saving when used.

[0008] Furthermore, a brush may be used instead of a scraper bar.

[0009] Furthermore, a water inlet pipe joint is connected to the water inlet and is used to be connected to the water inlet pipe.

[0010] In this way, by providing a water inlet pipe joint, it is more convenient to connect with the water inlet pipe during use.

[0011] Furthermore, a sealing plate is provided at the lower end of the filter so that the lower end of the filter is sealed.

[0012] In this way, by providing a sealing plate, the lower end of the filter can be better sealed and the structural design is simpler.

[0013] Furthermore, the upper end cover is designed as a whole in a cylindrical structure and is sleeved and installed on the upper end of the outer cylinder.

[0014] In this way, the structure of the upper end cover is simpler, and the detachable connection between the upper end cover and the outer cylinder is more convenient. Usually, a sealing ring can be arranged between the upper end cover and the outer cylinder.

[0015] As an optimization, the filter is translated toward one side of the inner circumferential wall of the outer cylinder so that the axis line of the filter and the axis line of the outer cylinder are arranged at intervals in the horizontal direction, and the filter divides the horizontal section of the outer cylinder into a wide section side and a narrow section side; and the water inlet is arranged corresponding to the narrow section side, and the axial direction of the water inlet is arranged perpendicular to the translation direction of the filter in the outer cylinder.

[0016] In this way, by translating the filter toward one side of the inner circumferential wall of the outer cylinder, the filter and the outer cylinder are arranged eccentrically. The filter eccentrically arranged in the outer cylinder divides the horizontal section of the outer cylinder into a wide section side and a narrow section side. When designing, the water inlet is set corresponding to the narrow section side, and the axial direction of the water inlet is set perpendicular to the translation direction of the filter in the outer cylinder. At the water inlet, the outer cylinder and the filter are designed eccentrically, so that the horizontal section through which the sewage flows at the water inlet is minimized. As the sewage flows, the horizontal cross-sectional area increases, resulting in a change in the sewage flow rate, so that the heavy sediment part automatically settles, and the sewage is filtered through the filter and discharged to the outlet. Such a design is not only convenient for the sewage to come to the bottom, but also convenient for better driving the fan blades and driving the support frame component to rotate horizontally, so as to better clean the filter.

[0017] Furthermore, an upper end cover is provided at the upper end of the outer cylinder, and the water outlet is provided at the center of the upper end cover. The water outlet is connected to a water outlet pipe joint and is used to be connected to the water outlet pipe.

[0018] In this way, by setting the upper end cover, the upper end cover can be detachably connected to the outer cylinder, which makes it more convenient to remove the filter and other structures for replacement and maintenance after the upper end cover is removed. It is also more convenient to set the water outlet, and the water outlet pipe joint provided on the water outlet is more convenient to connect with the water outlet pipe.

[0019] Furthermore, a partition plate is installed between the upper end of the outer cylinder and the upper end cover, and a through hole is provided on the partition plate opposite to the middle of the filter screen, and a through cylinder arranged vertically downward is connected to the through hole, and the upper end of the filter cartridge is sleeved on the through cylinder; and the upper surface of the partition plate and the inner bottom surface of the upper end cover are spaced apart to form a detour space, so that after the sewage is filtered through the filter screen and enters the inner side of the filter screen, it passes through the through cylinder and the through hole into the detour space, and is finally discharged from the water outlet.

[0020] In this way, a partition plate is provided, and a through hole and a through tube are provided on the partition plate. The partition plate is first assembled, and the lower end of the through tube is extended into the upper end of the filter screen to limit the filter screen, and finally the upper end cover is assembled. The upper end cover can be threadedly connected to the upper end of the outer tube. A sealing ring can be provided between the upper end cover and the outer tube for sealing, and a clamping step surface can also be provided on the inner circumferential surface of the upper end cover. After the upper end cover is connected and matched with the outer tube, the clamping step surface is supported on the partition plate to limit its vertical position, and an installation step surface can also be provided on the inner circumferential wall of the upper end of the outer tube for installing the partition plate. Compared with directly setting the through tube on the upper end cover, because the through tube is eccentrically designed relative to the outer tube, the upper end cover cannot be screwed on the upper end of the outer tube. Therefore, the above structure can solve the problem of threaded connection.

[0021] As an optimization, the number of the fan blades is four and they are spaced apart along the circumferential direction of the supporting frame member.

[0022] In this way, the number of the fan blades is four, which is more reasonably arranged, so that the supporting frame member can be better and more continuously subjected to the power that forces it to rotate horizontally.

[0023] Furthermore, the fan blades include a first fan blade and a second fan blade, and a projected length dimension of the first fan blade on a horizontal section is greater than a projected length dimension of the second fan blade on the horizontal section.

[0024] In this way, by setting the first fan blade and the second fan blade, and making the projected length of the first fan blade on the horizontal section larger than the projected length of the second fan blade on the horizontal section, such a design can provide better power when sewage impacts.

[0025] Furthermore, the angle between the projection of the fan blade on the horizontal section and the outer circumference of the supporting frame member is set to be an acute angle.

[0026] In this way, when the sewage impacts the fan blades, the angle between the advancing direction of the sewage and the fan blades is also set to be an acute angle, so that the impact effect of the sewage on the fan blades is better.

[0027] Furthermore, the guide plate is designed as a semicircular structure, the outer side of the guide plate is connected to the inner wall of the outer tube, and the inner side of the guide plate is provided with a semicircular clearance opening for the vertical passage of the supporting frame member.

[0028] In this way, the structural design of the guide plate is more reasonable, which can better guide the sewage and make the incoming sewage better impact the fan blades.

[0029] As an optimization, the slag box includes a slag box body with an open upper end, a box cover plate is provided at the open end of the slag box body, one end of the box cover plate is hinged to the slag box body, and the other end of the box cover plate is detachably connected to the slag box body through a lock; and a sealing structure is provided between the upper end of the slag box body and the box cover plate.

[0030] In this way, the structural design of the slag box is simpler, and when cleaning, the box cover can be opened to clean the slag inside the slag box.

[0031] Furthermore, the sealing structure includes a circle of sealing step surface provided on the inner peripheral wall of the upper end of the slag box body, a sealing gasket is provided on the sealing step surface, and after the box cover plate is connected to the slag box body, the edge of the lower surface of the box cover plate can be pressed against the upper surface of the sealing gasket.

[0032] In this way, a sealing gasket is designed between the slag box body and the box cover plate, which can better seal the two to prevent sewage from leaking to the outside, and the entire structural design is simpler and more reasonable.

[0033] Furthermore, a connecting hole is provided at the center of the box cover plate, a connecting sleeve is provided in the connecting hole, and the lower end of the outer tube is threadedly connected in the connecting sleeve.

[0034] In this way, by designing a connection hole on the box cover plate and designing a connection sleeve in the connection hole, the installation between the outer cylinder and the box cover plate is more convenient.

[0035] Furthermore, the slag box is designed to be a rectangular structure, so that the structural design is simpler and more reasonable.

[0036] As an optimization, the support structure includes a support ring installed and fixed at the lower end of the outer cylinder, and a plurality of support bars arranged obliquely downward are connected to the support ring, and the far ends of the support bars are connected together so that the support ring and the support bars are designed as a conical structure as a whole, and the lower end of the filter is installed abutting against the support bars.

[0037] In this way, by providing the support bar and the support ring, the lower end of the filter screen is abutted against the upper end of the support bar, thereby limiting the vertical position of the filter screen. The upper end of the filter screen can abut against the upper end cover, thereby constraining the filter screen.

[0038] As an optimization, the support structure also includes a slag leakage mesh plate which is arranged above the support bar and has an overall conical structure design, and the lower end of the filter screen is mounted and fixed on the slag leakage mesh plate.

[0039] In this way, by arranging a slag leakage mesh plate above the support bar, it is possible to better prevent the support frame member from horizontally rotating and stirring the liquid inside the slag box, so that the liquid inside the slag box can be better settled.

[0040] Furthermore, a ring-shaped fixed ridge is provided at the lower end of the inner part of the outer cylinder, and the support ring is installed in close contact with the fixed ridge.

[0041] In this way, by providing the fixing flange, it is more convenient to install the support ring and also convenient to take it out from the upper end.

[0042] Furthermore, the fixed flange and the outer cylinder are integrally formed.

[0043] Furthermore, the lower surface edge of the slag leakage mesh plate has a circle of annular abutment protrusions that protrude downward and are supported above the support ring, so that the slag leakage mesh plate and the support bars are arranged at intervals in the vertical direction.

[0044] In this way, the support bars and the slag leakage screen are arranged at intervals vertically, which can better prevent the liquid in the slag box from being stirred and is more conducive to sedimentation.

[0045] As an optimization, the support frame member includes connecting rings that are sleeved on the upper and lower ends of the outside of the filter, and a vertically arranged connecting strip is fixed between the two connecting rings. There are two or more connecting strips that are evenly distributed along the circumferential direction of the connecting rings; and the inner side of the connecting strip can contact the outer circumferential surface of the filter to form the scraping strip structure.

[0046] In this way, the structural design of the supporting frame member is simpler, the overall weight is smaller, and it is more conducive to driving the rotation thereof.

[0047] Furthermore, there are four connecting strips evenly distributed along the circumference.

[0048] Furthermore, a stabilizing ring is provided at the upper end of the connecting strip and vertically spaced downward from the connecting ring.

[0049] The present invention also discloses a drilling filtration system, comprising a drilling filtration device of the above-mentioned structure; the drilling filtration device is one or more and is arranged in series to form a drilling filtration device group, and the number of the drilling filtration device groups is one or more; and the drilling filtration device group has a water inlet end and a water outlet end, the water inlet ends of the drilling filtration device group are respectively connected to the water outlet ends of the boreholes, and the water outlet ends of the drilling filtration device group are respectively connected to the municipal drainage network.

[0050] In this way, in the above-mentioned drilling filtration system, by arranging different numbers of drilling filtration devices in series or in parallel, the entire drilling filtration system can better adapt to the treatment of mud under different treatment requirements, and can better meet the treatment requirements, can better meet the construction requirements, and make the treated mud better meet the discharge requirements.

[0051] Furthermore, an installation plane is provided on one side of the borehole, and the installation plane is vertically spaced downward below the water outlet of the borehole, and after the drilling filtration system is installed on the installation plane, the water inlet end of the drilling filtration system is vertically located below the water outlet of the borehole.

[0052] In this way, the layout is more reasonable and can better transport the sewage discharged from the borehole to the drilling filtration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1It is a structural schematic diagram of a drilling filtering device in a specific embodiment of the present invention (the box cover is in an open state).

[0054] Figure 2 yes Figure 1 main view.

[0055] Figure 3 yes Figure 1 Top view of the .

[0056] Figure 4 yes Figure 1 Only a schematic diagram of the slag box structure is shown.

[0057] Figure 5 yes Figure 1 Schematic diagram of the structure of the supporting frame component part.

[0058] Figure 6 It is a cross-sectional schematic diagram of a drilling filtering device in a specific embodiment of the present invention.

[0059] Figure 7 yes Figure 6 A locally enlarged schematic diagram of position A in FIG.

[0060] Figure 8 yes Figure 6 A locally enlarged schematic diagram of position B in FIG.

[0061] Fig. 9 yes Figure 6 Schematic diagram of top view (the upper end cover is not shown in the figure).

[0062] Fig.10 It is a structural schematic diagram of a drilling filtration system in a specific implementation manner of the present invention. DETAILED DESCRIPTION

[0063] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] like Figures 1 to 10As shown, a drilling filtering device comprises a slag box 1, on which is provided an outer cylinder 2, the lower end of which is open and connected to the slag box; a cylindrical and vertically arranged filter screen 3 is arranged in the outer cylinder, and the lower end of the filter screen is sealed; a supporting structure is arranged at the lower end of the inner part of the outer cylinder and has a supporting part abutting against the lower end of the filter screen to limit the vertical position of the filter screen; a water outlet is arranged at the upper end of the outer cylinder and the water outlet is connected to the upper end of the filter screen; a supporting frame member 4 which is cylindrical as a whole is arranged in the outer cylinder, and the supporting frame member can be horizontally rotatably sleeved on the outside of the filter screen; one or more vertically arranged scraping strips 5 are distributed at intervals on the inner circumferential surface of the supporting frame member, and the inner side of the scraping strips can contact the outer circumferential surface of the filter screen; two or more fan blades 6 are distributed at intervals on the outer circumferential surface of the upper end of the supporting frame member and along the circumferential direction, a water inlet is arranged at the upper end of the outer cylinder, and a guide plate 7 is horizontally provided on the inner circumferential wall of the outer cylinder and corresponding to the water inlet, and the guide plate is located below the fan blade.

[0065] In this way, when the above-mentioned drilling and filtering device is working, the sewage (mud) discharged from the upper end of the borehole enters from the water inlet at the upper end of the outer cylinder, and the sewage can fill the inner cavity of the entire device after entering. After that, the filter can filter the sewage, and the filtered sewage enters the inner side of the filter. The external sewage is continuously supplied, and sewage is continuously filtered so that the sewage inside the filter is discharged from the water outlet at the upper end. The slag and large particles in the sewage can settle and enter the slag box. While the filter completes the filtration of the sewage, slag and large particles will be attached to the outer surface of the filter. When sewage enters from the water inlet at the upper end of the outer cylinder, the guide plate inside the outer cylinder and located below the water inlet can guide the sewage, so that the sewage has a horizontal flow direction after entering the outer cylinder, and the sewage impacts the fan blades to make the supporting frame member and the fan blades on the supporting frame member rotate horizontally. After the supporting frame member rotates horizontally, the scraper strips on the supporting frame member contact with the outer circumferential surface of the filter screen and can clean the filter screen, and can scrape off the residue and large particles attached to the outer surface of the filter screen, so that the cleaned residue and large particles are precipitated and enter the slag box. In the above device, a supporting frame member in an overall cylindrical shape is provided in the outer cylinder, and the supporting frame member is horizontally rotatably sleeved on the outside of the filter screen; one or more scraping strips are spaced apart on the inner circumferential surface of the supporting frame member and are vertically arranged, so that the inner side of the scraping strips can contact the outer circumferential surface of the filter screen; two or more fan blades are spaced apart on the outer circumferential surface of the upper end of the supporting frame member and are spaced apart along the circumferential direction, and a guide plate is horizontally provided on the inner circumferential wall of the outer cylinder corresponding to the water inlet, and the guide plate is located below the fan blade. In this way, the sewage entering from the water inlet can impact the blades and provide power to rotate the supporting frame member horizontally. While filtering the sewage, the filter screen is also cleaned, which can better ensure the normal filtering work of the filter screen, improve the filtering effect, and improve the sewage treatment capacity. And no additional kinetic energy is required, and the entire device is more environmentally friendly and energy-saving when used.

[0066] Specifically, a brush may be used instead of a scraper bar.

[0067] Specifically, the water inlet is connected to a water inlet pipe joint 8 and is used to be connected to a water inlet pipe.

[0068] In this way, by providing a water inlet pipe joint, it is more convenient to connect with the water inlet pipe during use.

[0069] Specifically, a sealing plate is provided at the lower end of the filter screen so that the lower end of the filter screen is sealed.

[0070] In this way, by providing a sealing plate, the lower end of the filter can be better sealed and the structural design is simpler.

[0071] Specifically, the upper end cover is designed as a cylindrical structure and is sleeved and installed on the upper end of the outer cylinder.

[0072] In this way, the structure of the upper end cover is simpler, and the detachable connection between the upper end cover and the outer cylinder is more convenient. Usually, a sealing ring can be arranged between the upper end cover and the outer cylinder.

[0073] In this specific embodiment, the filter screen 3 is translated toward one side of the inner circumferential wall of the outer cylinder 2 so that the axis line of the filter screen and the axis line of the outer cylinder are arranged at intervals in the horizontal direction, and the filter screen divides the horizontal section of the outer cylinder into a wide section side 11 and a narrow section side 12; and the water inlet is arranged corresponding to the narrow section side, and the axial direction of the water inlet is arranged perpendicular to the translation direction of the filter screen in the outer cylinder.

[0074] In this way, by translating the filter toward one side of the inner circumferential wall of the outer cylinder, the filter and the outer cylinder are arranged eccentrically. The filter eccentrically arranged in the outer cylinder divides the horizontal section of the outer cylinder into a wide section side and a narrow section side. When designing, the water inlet is set corresponding to the narrow section side, and the axial direction of the water inlet is set perpendicular to the translation direction of the filter in the outer cylinder. At the water inlet, the outer cylinder and the filter are designed eccentrically, so that the horizontal section through which the sewage flows at the water inlet is minimized. As the sewage flows, the horizontal cross-sectional area increases, resulting in a change in the sewage flow rate, so that the heavy sediment part automatically settles, and the sewage is filtered through the filter and discharged to the outlet. Such a design is not only convenient for the sewage to come to the bottom, but also convenient for better driving the fan blades and driving the support frame component to rotate horizontally, so as to better clean the filter.

[0075] Specifically, an upper end cover 9 is provided at the upper end of the outer cylinder, and the water outlet is provided at the center of the upper end cover. The water outlet is connected to a water outlet pipe joint 10 and is used to be connected to the water outlet pipe.

[0076] In this way, by setting the upper end cover, the upper end cover can be detachably connected to the outer cylinder, which makes it more convenient to remove the filter and other structures for replacement and maintenance after the upper end cover is removed. It is also more convenient to set the water outlet, and the water outlet pipe joint provided on the water outlet is more convenient to connect with the water outlet pipe.

[0077] Specifically, a partition plate 28 is installed between the upper end of the outer cylinder and the upper end cover, and a through hole 29 is provided on the partition plate facing the middle of the filter screen, and a through cylinder 30 arranged vertically downward is connected to the through hole, and the upper end of the filter cartridge is sleeved on the through cylinder; and the upper surface of the partition plate and the inner bottom surface of the upper end cover are spaced apart to form a detour space, so that after the sewage is filtered through the filter screen and enters the inner side of the filter screen, it passes through the through cylinder and the through hole into the detour space, and is finally discharged from the water outlet.

[0078] In this way, a partition plate is provided, and a through hole and a through tube are provided on the partition plate. The partition plate is first assembled, and the lower end of the through tube is extended into the upper end of the filter screen to limit the filter screen, and finally the upper end cover is assembled. The upper end cover can be threadedly connected to the upper end of the outer tube. A sealing ring can be provided between the upper end cover and the outer tube for sealing, and a clamping step surface can also be provided on the inner circumferential surface of the upper end cover. After the upper end cover is connected and matched with the outer tube, the clamping step surface is supported on the partition plate to limit its vertical position, and an installation step surface can also be provided on the inner circumferential wall of the upper end of the outer tube for installing the partition plate. Compared with directly setting the through tube on the upper end cover, because the through tube is eccentrically designed relative to the outer tube, the upper end cover cannot be screwed on the upper end of the outer tube. Therefore, the above structure can solve the problem of threaded connection.

[0079] In this specific implementation, there are four fan blades 6 and they are spaced apart along the circumferential direction of the supporting frame member.

[0080] In this way, the number of the fan blades is four, which is more reasonably arranged, so that the supporting frame member can be better and more continuously subjected to the power that forces it to rotate horizontally.

[0081] Specifically, the fan blades include a first fan blade 13 and a second fan blade 14, and a projected length dimension of the first fan blade on a horizontal section is greater than a projected length dimension of the second fan blade on the horizontal section.

[0082] In this way, by setting the first fan blade and the second fan blade, and making the projected length of the first fan blade on the horizontal section larger than the projected length of the second fan blade on the horizontal section, such a design can provide better power when sewage impacts.

[0083] Specifically, the angle between the projection of the fan blade on the horizontal section and the outer circumference of the supporting frame member is set to be an acute angle.

[0084] In this way, when the sewage impacts the fan blades, the angle between the advancing direction of the sewage and the fan blades is also set to be an acute angle, so that the impact effect of the sewage on the fan blades is better.

[0085] Specifically, the guide plate 7 is designed as a semicircular structure, the outer side of the guide plate is connected to the inner circumferential wall of the outer tube, and the inner side of the guide plate is provided with a semicircular clearance opening for the vertical passage of the supporting frame member.

[0086] In this way, the structural design of the guide plate is more reasonable, which can better guide the sewage and make the incoming sewage better impact the fan blades.

[0087] In this specific embodiment, the slag box includes a slag box body 15 with an open upper end, and a box cover plate 16 is provided at the open end of the slag box body. One end of the box cover plate is hinged to the slag box body, and the other end of the box cover plate is detachably connected to the slag box body through a lock; and a sealing structure is provided between the upper end of the slag box body and the box cover plate.

[0088] In this way, the structural design of the slag box is simpler, and when cleaning, the box cover can be opened to clean the slag inside the slag box.

[0089] Specifically, the sealing structure includes a circle of sealing step surface on the inner peripheral wall of the upper end of the slag box body, and a sealing gasket 17 is provided on the sealing step surface. After the box cover is connected to the slag box body, the edge of the lower surface of the box cover can be pressed against the upper surface of the sealing gasket.

[0090] In this way, a sealing gasket is designed between the slag box body and the box cover plate, which can better seal the two to prevent sewage from leaking to the outside, and the entire structural design is simpler and more reasonable.

[0091] Specifically, a connection hole is provided at the center of the box cover plate, a connection sleeve 18 is provided in the connection hole, and the lower end of the outer cylinder is threadedly connected in the connection sleeve.

[0092] In this way, by designing a connection hole on the box cover plate and designing a connection sleeve in the connection hole, the installation between the outer cylinder and the box cover plate is more convenient.

[0093] Specifically, the slag box is designed to be a rectangular structure, so that the structural design is simpler and more reasonable.

[0094] In this specific embodiment, the support structure includes a support ring installed and fixed at the lower end of the outer cylinder, and a plurality of support bars 19 arranged obliquely downward are connected to the support ring, and the far ends of the support bars are connected together so that the support ring and the support bars are designed as a conical structure as a whole, and the lower end of the filter is installed abutting against the support bars.

[0095] In this way, by providing the support bar and the support ring, the lower end of the filter screen is abutted against the upper end of the support bar, thereby limiting the vertical position of the filter screen. The upper end of the filter screen can abut against the upper end cover, thereby constraining the filter screen.

[0096] In this specific embodiment, the support structure further comprises a slag leakage mesh plate 20 which is arranged above the support bar and has an overall conical structure design, and the lower end of the filter screen is mounted and fixed on the slag leakage mesh plate.

[0097] In this way, by arranging a slag leakage mesh plate above the support bar, it is possible to better prevent the support frame member from horizontally rotating and stirring the liquid inside the slag box, so that the liquid inside the slag box can be better settled.

[0098] Specifically, a ring-shaped fixed flange 21 is provided at the lower end of the inner part of the outer cylinder, and the support ring is installed in close contact with the fixed flange.

[0099] In this way, by providing the fixing flange, it is more convenient to install the support ring and also convenient to take it out from the upper end.

[0100] Specifically, the fixed flange and the outer cylinder are integrally formed.

[0101] Specifically, the lower surface edge of the slag leakage mesh plate has a circle of annular abutment protrusions that protrude downward and are supported above the support ring, so that the slag leakage mesh plate and the support bars are arranged at intervals in the vertical direction.

[0102] In this way, the support bars and the slag leakage screen are arranged at intervals vertically, which can better prevent the liquid in the slag box from being stirred and is more conducive to sedimentation.

[0103] In this specific embodiment, the support frame member includes a connecting ring 22 that is sleeved on the upper and lower ends of the outside of the filter, and a vertically arranged connecting strip 23 is connected and fixed between the two connecting rings. There are two or more connecting strips and they are evenly distributed along the circumferential direction of the connecting ring; and the inner side of the connecting strip can contact the outer circumferential surface of the filter to form the scraping strip structure.

[0104] In this way, the structural design of the supporting frame member is simpler, the overall weight is smaller, and it is more conducive to driving the rotation thereof.

[0105] Specifically, there are four connecting strips evenly distributed along the circumference.

[0106] Specifically, a stabilizing ring 24 is provided at the upper end of the connecting strip and vertically spaced downward from the connecting ring.

[0107] like Fig.10 The present specific embodiment also discloses a drilling filtration system, including a drilling filtration device 25 of the above-mentioned structure; the drilling filtration device is one or more and is arranged in series to form a drilling filtration device group 26, and the number of the drilling filtration device groups is one or more; and the drilling filtration device group has an inlet end and an outlet end, the inlet ends of the drilling filtration device group are respectively connected to the outlet ends of the boreholes 27, and the outlet ends of the drilling filtration device group are respectively connected to the municipal drainage network.

[0108] In this way, in the above-mentioned drilling filtration system, by arranging different numbers of drilling filtration devices in series or in parallel, the entire drilling filtration system can better adapt to the treatment of mud under different treatment requirements, and can better meet the treatment requirements, can better meet the construction requirements, and make the treated mud better meet the discharge requirements.

[0109] In this specific embodiment, an installation plane is provided on one side of the borehole, and the installation plane is vertically spaced downward below the water outlet of the borehole, and after the drilling filtration system is installed on the installation plane, the water inlet end of the drilling filtration system is vertically located below the water outlet of the borehole.

[0110] In this way, the layout is more reasonable and can better transport the sewage discharged from the borehole to the drilling filtration system.

[0111] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A drilling filter device, comprising a slag box, characterized in that: An outer cylinder is provided on the slag box, and the lower end of the outer cylinder is open and connected to the slag box; a cylindrical and vertically arranged filter screen is provided in the outer cylinder, and the lower end of the filter screen is sealed; a supporting structure is provided at the lower end of the inner part of the outer cylinder and has a supporting part abutting against the lower end of the filter screen to limit the vertical position of the filter screen; a water outlet is provided at the upper end of the outer cylinder, and the water outlet is connected to the upper end of the filter screen; a supporting frame member that is cylindrical as a whole is provided in the outer cylinder, and the supporting frame member can be horizontally rotatably sleeved on the outside of the filter screen; one or more vertically arranged scraping strips are distributed at intervals on the inner circumferential surface of the supporting frame member, and the inner side of the scraping strip can contact the outer circumferential surface of the filter screen; two or more fan blades are distributed at intervals on the outer circumferential surface of the upper end of the supporting frame member and in the circumferential direction, and a water inlet is provided at the upper end of the outer cylinder, and a guide plate is provided on the inner circumferential wall of the outer cylinder and horizontally corresponding to the water inlet, and the guide plate is located below the fan blade; The filter screen is translated toward one side of the inner peripheral wall of the outer cylinder so that the axis of the filter screen and the axis of the outer cylinder are arranged at intervals in the horizontal direction, and the filter screen divides the horizontal section of the outer cylinder into a wide section side and a narrow section side; the water inlet is arranged corresponding to the narrow section side, and the axial direction of the water inlet is arranged perpendicular to the translation direction of the filter screen in the outer cylinder; An upper end cover is provided at the upper end of the outer cylinder, and a partition plate is installed between the upper end of the outer cylinder and the upper end cover. A through hole is provided on the partition plate facing the middle of the filter screen, and a through cylinder arranged vertically downward is connected to the through hole, so that the upper end of the filter cartridge is sleeved on the through cylinder; and the upper surface of the partition plate and the inner bottom surface of the upper end cover are spaced apart to form a detour space, so that after the sewage is filtered through the filter screen and enters the inner side of the filter screen, it passes through the through cylinder and the through hole into the detour space, and is finally discharged from the water outlet.

2. A drilling filter device according to claim 1, characterized in that: There are four fan blades which are distributed at intervals along the circumferential direction of the supporting frame component.

3. A drilling filter device according to claim 1, characterized in that: The slag box includes a slag box body with an open upper end, a box cover plate is provided at the open end of the slag box body, one end of the box cover plate is hinged to the slag box body, and the other end of the box cover plate is detachably connected to the slag box body through a lock; and a sealing structure is provided between the upper end of the slag box body and the box cover plate.

4. A drilling filter device according to claim 1, characterized in that: The support structure includes a support ring installed and fixed at the lower end of the outer cylinder, and a plurality of support bars arranged obliquely downward are connected to the support ring, and the far ends of the support bars are connected together so that the support ring and the support bars are designed as a conical structure as a whole, and the lower end of the filter is installed abutting against the support bars.

5. A drilling filter device as claimed in claim 4, characterized in that: The support structure also includes a slag leakage mesh plate which is arranged above the support bar and has an overall conical structure design, and the lower end of the filter screen is fixedly mounted on the slag leakage mesh plate.

6. A drilling filter device according to claim 1, characterized in that: The support frame component includes connecting rings that are sleeved on the upper and lower ends of the outside of the filter, and a vertically arranged connecting strip is fixedly connected between the two connecting rings. There are two or more connecting strips that are evenly distributed along the circumferential direction of the connecting rings; and the inner side of the connecting strip can contact the outer circumferential surface of the filter to form the scraping strip structure.

7. A drilling filtration system, characterized in that: It comprises a drilling filter device as claimed in any one of claims 1 to 6; the drilling filter device is one or more and is arranged in series to form a drilling filter device group, and the number of the drilling filter device groups is one or more; and the drilling filter device group has a water inlet end and a water outlet end, the water inlet ends of the drilling filter device group are respectively connected to the water outlet ends of the boreholes, and the water outlet ends of the drilling filter device group are respectively connected to the municipal drainage network.

8. A drilling filtration system according to claim 7, characterized in that: A mounting plane is provided on one side of the borehole, and the mounting plane is vertically spaced downward below the water outlet of the borehole, and after the drilling filtration system is mounted on the mounting plane, the water inlet end of the drilling filtration system is vertically located below the water outlet of the borehole.

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