Magnetic separation device for well cementation materials

Abstract

The magnetic separation device comprises a bottom plate and a magnetic separation box arranged above the bottom plate, a primary screening assembly is arranged in the magnetic separation box, so that quartz powder entering the magnetic separation box firstly falls onto a screening plate, and a vibration motor drives the screening plate to vibrate up and down; large-particle scrap iron or impurities in the quartz powder are separated, small scrap iron and the quartz powder fall down to be filtered again, the workload of magnetic separation in the later period is reduced through the primary screening assembly, and the magnetic separation efficiency is improved; the quartz powder subjected to primary impurity removal falls onto a magnetic rod, a driving motor is started, the driving motor drives the magnetic rod to rotate, and then scrap iron in the quartz powder is adsorbed and removed; and the quartz powder filtered twice falls onto a conical discharging block at the bottom of the magnetic separation box, and iron chips in the quartz powder are adsorbed again by a magnetic block in the downward sliding process, so that a relatively good iron removal effect is achieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cementing material production equipment, in particular to a magnetic separation device for cementing materials. Background Art

[0002] Cementing materials are one of the commonly used materials in the field of petroleum engineering. They are mainly used in oilfield cementing operations to maintain wellbore stability and prevent wellbore wall collapse. Among them, powder is an important component of cementing materials and plays an important role. Powder is a fine powdery substance, common ones include cement, quartz powder, barite powder, etc. These powders play different roles in cementing projects.

[0003] Quartz powder is a commonly used filling material with good filling performance. In cementing operations, quartz powder can fill the gap between the wellbore and the casing, fill small cracks in the wellbore, enhance the integrity of the cementing barrier, and improve the quality of cementing. Before the cementing material is mixed, the quartz powder generally contains a lot of iron filings, which seriously affects the quality of the cementing material and needs to be removed. Existing magnetic separation devices generally use a stirring shaft and an electromagnetic chuck to adsorb the iron filings in the quartz powder, but the magnetic separation method is single, resulting in incomplete iron removal, which affects the subsequent use of the cementing material. Utility Model Content

[0004] The purpose of the present application is to provide a magnetic separation device for cementing materials, so as to solve the problem that the existing magnetic separation devices generally use a stirring shaft and an electromagnetic suction cup in combination to adsorb iron filings in quartz powder, but the magnetic separation method is single, resulting in incomplete iron removal, which affects the subsequent use of cementing materials.

[0005] In order to solve the above technical problems, the present application provides a magnetic separation device for cementing materials, comprising a base plate and a magnetic separation box arranged above the base plate, the top of the magnetic separation box is connected to a feed hopper, a primary screening assembly is arranged in the magnetic separation box, two magnetic rods are arranged below the primary screening assembly, a driving motor is arranged on an outer wall of one side of the magnetic separation box, the output shaft of the driving motor passes through the side wall of the magnetic separation box and is connected to one end of the magnetic rod, a cleaning assembly is arranged on the ends of the two magnetic rods away from each other, a partition is arranged inside the magnetic separation box below the magnetic rod, magnetic outlets for use with the partitions are provided on both side walls of the magnetic separation box, magnetic collecting boxes are provided on both side walls of the magnetic separation box, a discharge port is provided at the middle position of the partition, a conical discharge block is fixedly arranged on the bottom of the magnetic separation box, vertical grooves are evenly arranged on the upper surface of the conical discharge block, and magnetic blocks are slidably arranged in the vertical grooves.

[0006] Preferably, the primary screening assembly comprises a screening plate obliquely arranged in the magnetic separation box, and a vibration motor is arranged at the bottom of the screening plate.

[0007] Preferably, both sides of the inner wall of the magnetic separation box are provided with through grooves, the screen plate is slidably connected in the through grooves, and two first springs are provided at the bottom of the screen plate.

[0008] Preferably, the cleaning assembly includes a fixed box fixed to the side wall of the magnetic separation box, a second spring is arranged in the fixed box, a limiting plate is arranged at one end of the second spring, the limiting plate is slidably connected to the inner wall of the fixed box, the other end of the limiting plate is connected to a connecting rod, the end of the connecting rod away from the second spring passes through the fixed box and is provided with a cleaning brush through the fixed plate.

[0009] Preferably, baffles are obliquely arranged on both sides of the top surface of the partition plate.

[0010] Preferably, a turntable is provided in the feed hopper, a rotating shaft is provided through the inside of the turntable, the rotating shaft passes through the side wall of the feed hopper and is rotatably connected thereto, and a rotating plate is provided on the surface of the turntable.

[0011] Preferably, the rotating plates are arranged in a circle and the number of the rotating plates is at least two, and the distances between adjacent rotating plates are equal.

[0012] Preferably, discharge ports are symmetrically arranged on both sides of the bottom of the magnetic separation box, and a collection box for use with the discharge ports is arranged above the bottom plate.

[0013] Compared with the prior art, the magnetic separation device for cementing materials provided by the utility model has at least the following beneficial effects:

[0014] 1. A primary screening component is set in the magnetic separation box, so that the quartz powder entering the magnetic separation box first falls onto the screening plate, and the vibration motor drives the screening plate to vibrate up and down, so that the large iron filings or impurities in the quartz powder are separated, and the smaller iron filings and quartz powder fall for re-filtration. The primary screening component reduces the workload of magnetic separation in the later stage and improves the magnetic separation efficiency;

[0015] 2. After the preliminary impurity removal, the quartz powder falls onto the magnetic rod, and the drive motor is started. The drive motor drives the magnetic rod to rotate, and then the iron filings in the quartz powder are adsorbed and removed; the quartz powder after two filtrations falls onto the conical discharge block at the bottom of the magnetic separation box. During the sliding process, the magnetic block adsorbs the iron filings in the quartz powder again, achieving a better iron removal effect and improving work efficiency;

[0016] 3. A cleaning component is set on one side of the magnetic rod, and the cleaning component is used to clean the iron filings adsorbed on the surface of the magnetic rod in time to prevent the iron filings from coating the magnetic rod, so as to maintain the subsequent normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0018] Figure 1 A schematic diagram of the structure of a magnetic separation device for cementing materials provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of a cleaning component provided by the utility model;

[0020] Figure 3 A front view of a magnetic separation device for cementing materials provided by the utility model;

[0021] Figure 4 A top view of a conical discharge block provided by the utility model;

[0022] In the figure: 1. feed hopper; 2. rotating shaft; 3. turntable; 4. rotating plate; 5. magnetic separation box; 6. screening plate; 7. first spring; 8. vibration motor; 9. driving motor; 10. magnetic rod; 11. fixing box; 12. second spring; 13. limit plate; 14. connecting rod; 15. fixing plate; 16. cleaning brush; 17. partition; 18. baffle; 19. magnetic outlet; 20. magnetic collecting box; 21. discharge port; 22. conical discharge block; 23. magnetic block; 24. discharge port; 25. collecting box; 26. bottom plate. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0024] The core of this application is to provide a magnetic separation device for cementing materials, which solves the problem that the existing magnetic separation devices generally use a stirring shaft and an electromagnetic suction cup to adsorb iron filings in quartz powder, but the magnetic separation method is single, resulting in incomplete iron removal, affecting the subsequent use of cementing materials.

[0025] Figure 1 This is a schematic diagram of the structure of a magnetic separation device for cementing materials provided by the utility model. Figure 2 A schematic diagram of a cleaning component structure provided by the utility model. Figure 3 This is a front view of a magnetic separation device for cementing materials provided by the utility model. Figure 4 A top view of a conical discharge block provided by the utility model, see Figures 1 to 4 shown.

[0026] A magnetic separation device for cementing materials includes a bottom plate 26 and a magnetic separation box 5 arranged above the bottom plate 26. The bottom plate 26 arranged below supports and fixes the magnetic separation box 5. The top of the magnetic separation box 5 is connected to a feed hopper 1. The quartz powder that needs to be magnetically separated is added to the magnetic separation box 5 through the feed hopper 1. The magnetic separation box 5 is provided with a primary screening component. The primary screening component is arranged below the feed hopper 1. The quartz powder entering the magnetic separation box 5 first falls above the primary screening component. The large iron filings or impurities in the quartz powder are preliminarily screened by the primary screening component. Two magnetic bars 10 are arranged below the primary screening component. Figure 1 As shown, a guide plate is provided below the primary screening assembly, and the quartz powder after preliminary screening falls onto the magnetic rod 10 through the guide plate. A driving motor 9 is provided on one side outer wall of the magnetic separation box 5, and the output shaft of the driving motor 9 passes through the side wall of the magnetic separation box 5 and is connected to one end of the magnetic rod 10. The driving motor 9 drives the magnetic rod 10 to rotate, and the rotating magnetic rod 10 can adsorb the iron filings mixed in the quartz powder. At the same time, in order to prevent the iron filings from coating the magnetic rod 10 and weaken the cleaning effect of the iron filings in the quartz powder, cleaning components are provided at the ends of the two magnetic rods 10 away from each other, and the iron filings on the magnetic rod 10 are cleaned in time by the cleaning components.

[0027] A partition 17 is provided inside the magnetic separation box 5 below the magnetic rod 10, and magnetic outlet ports 19 used in conjunction with the partition 17 are provided on both side walls of the magnetic separation box 5. After the cleaning component cleans the iron filings on the magnetic rod 10, the iron filings slide along the surface of the partition 17 to the magnetic outlet port 19 for discharge, and magnetic collecting boxes 20 are provided on both side walls of the magnetic separation box 5, through which the separated iron filings are collected. A discharge port 21 is provided in the middle of the partition 17, and the discharge port 21 is provided in the middle position below the two magnetic bars 10. The magnetic bars 10 adsorb the iron filings in the quartz powder, and the quartz powder falls from between the two magnetic bars 10 and falls to the bottom of the magnetic separation box 5 through the discharge port 21. A conical discharge block 22 is fixedly provided at the bottom of the magnetic separation box 5. The conical discharge block 22 divides the quartz powder into two parts. Vertical grooves are evenly provided on the upper surface of the conical discharge block 22. A magnetic block 23 is slidably provided in the vertical groove. The quartz powder sliding down the surface of the conical discharge block 22 is re-screened by the magnetic block 23, and the iron filings in the quartz powder are adsorbed again, so as to achieve a better iron removal effect.

[0028] In this embodiment, preferably, the primary screening assembly includes a screen plate 6 obliquely arranged in the magnetic separation box 5, and a vibration motor 8 is arranged at the bottom of the screen plate 6. The structure and working principle of the vibration motor 8 can refer to the prior art. The screen plate 6 is provided with screen holes. When quartz powder is added into the magnetic separation box 5, the quartz powder first falls onto the screen plate 6, and the vibration motor 8 is started. The vibration motor 8 drives the screen plate 6 to vibrate, and large iron filings or impurities are separated on the screen plate 6, so that the large iron filings in the quartz powder can be filtered and separated. The screen plate 6 is arranged obliquely, and the large iron filings filtered on the screen plate 6 are discharged from the magnetic separation box 5 as the screen plate 6 vibrates, without the need for separate collection by staff.

[0029] In order to improve the filtering efficiency, preferably, both sides of the inner wall of the magnetic separation box 5 are provided with through grooves, the sieve plate 6 is slidably connected in the through grooves, and two first springs 7 are arranged at the bottom of the sieve plate 6. When the vibration motor 8 drives the sieve plate 6 to vibrate, the first spring 7 expands and contracts accordingly, thereby increasing the vibration range of the sieve plate 6, thereby improving the filtering efficiency.

[0030] In order to prevent iron filings from coating the magnetic rod 10, a cleaning assembly is provided on one side of the magnetic rod 10. Preferably, the cleaning assembly includes a fixed box 11 fixed to the side wall of the magnetic separation box 5, and a second spring 12 is provided in the fixed box 11. A limiting plate 13 is provided at one end of the second spring 12. The limiting plate 13 is slidably connected to the inner wall of the fixed box 11, and a connecting rod 14 is connected to the other end of the limiting plate 13. The second spring 12 is in a compressed state. By providing the second spring 12 in a compressed state, it is convenient to apply a force to the limiting plate 13. The setting of the limiting plate 13 serves the purpose of limiting the movement of the connecting rod 14. The end of the connecting rod 14 away from the second spring 12 passes through the fixed box 11 and is provided with a cleaning brush 16 through the fixed plate 15. By providing the cleaning brush 16, it is convenient to clean the iron filings attached to the magnetic rod 10, which is beneficial for the magnetic rod 10 to adsorb iron products. When the magnetic rod 10 rotates, the cleaning brush 16 under the action of the second spring 12 will be closely attached to the magnetic rod 10 to clean the iron filings adsorbed on the magnetic rod 10 .

[0031] In order to prevent the iron filings adsorbed on the magnetic rod 10 from falling to the bottom of the magnetic separation box 5 through the discharge port 21 after being cleaned and mixed with the quartz powder again, preferably, the top surface of the partition 17 is located on both sides of the discharge port 21 and baffles 18 are obliquely arranged. The baffles 18 are used to isolate the quartz powder and the iron filings, so as to facilitate the diversion of the quartz powder after magnetic separation, so that the quartz powder can fall to the bottom of the magnetic separation box 5 through the discharge port 21.

[0032] In this embodiment, preferably, a turntable 3 is provided in the feed hopper 1, a rotating shaft 2 is provided inside the turntable 3, the rotating shaft 2 passes through the side wall of the feed hopper 1 and is rotatably connected thereto, a rotating plate 4 is provided on the surface of the turntable 3, the rotating shaft 2 is connected to an external motor (the external motor is not shown in the figure), the external motor drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the rotating plate 4 to make a circular motion through the turntable 3, and the feeding of quartz powder can be controlled by the circular motion of the rotating plate 4, thereby avoiding too much feeding at one time. In order to better control the feeding, preferably, the rotating plates 4 are arranged in a circle and the number is at least two, and the distance between adjacent rotating plates 4 is equal.

[0033] In order to better collect the quartz powder after impurities are removed, preferably, discharge ports 24 are symmetrically arranged on both sides of the bottom of the magnetic separation box 5, and a collection box 25 used in conjunction with the discharge ports 24 is arranged above the bottom plate 26. The quartz powder after multiple magnetic separations and impurities removal slides along the surface of the conical discharge block 22 to the discharge port 24 and is discharged from the magnetic separation box 5, and then falls into the collection box 25 for collection.

[0034] The present application provides a magnetic separation device for cementing materials, and its working principle is as follows: the quartz powder to be magnetically separated is added into the magnetic separation box 5 through the feed hopper 1, the external motor drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the rotating plate 4 to perform circular motion through the turntable 3, and the feeding of the quartz powder can be controlled by the circular motion of the rotating plate 4. When quartz powder is added into the magnetic separation box 5, the quartz powder first falls onto the screening plate 6, and the vibration motor 8 is started. The vibration motor 8 drives the screening plate 6 to vibrate, and large-particle iron filings or impurities are separated on the screening plate 6, so as to filter and separate the large-particle iron filings in the quartz powder; the quartz powder after preliminary screening falls onto the magnetic rod 10 through the guide plate, and the driving motor 9 drives the magnetic rod 10 to rotate. The rotating magnetic rod 10 can adsorb the iron filings mixed in the quartz powder. When the magnetic rod 10 rotates, the cleaning brush 16 under the action of the second spring 12 will be close to the magnetic rod 10 to clean the iron filings adsorbed on the magnetic rod 10, and the iron filings slide along the surface of the partition 17 to the magnetic outlet 19 for discharge. The quartz powder falls from between the two magnetic bars 10 and falls to the bottom of the magnetic separation box 5 through the discharge port 21. The quartz powder sliding down the surface of the conical discharge block 22 is screened again by the magnetic block 23, and the iron filings in the quartz powder are adsorbed again to achieve a better iron removal effect.

[0035] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope of the present application is indicated by the claims.

[0036] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A magnetic separation device for cementing materials, characterized in that: include: A bottom plate (26) and a magnetic separation box (5) arranged above the bottom plate (26), the top of the magnetic separation box (5) being connected to a feed hopper (1), a primary screening assembly being arranged inside the magnetic separation box (5), two magnetic bars (10) being arranged below the primary screening assembly, a driving motor (9) being arranged on an outer wall of one side of the magnetic separation box (5), an output shaft of the driving motor (9) passing through the side wall of the magnetic separation box (5) and being connected to one end of the magnetic bar (10), and a cleaning assembly being arranged on the ends of the two magnetic bars (10) which are away from each other. A partition (17) is arranged inside the magnetic separation box (5) below the magnetic rod (10), and magnetic outlets (19) used in conjunction with the partition (17) are provided on both side walls of the magnetic separation box (5). A magnetic collecting box (20) is arranged on both side walls of the magnetic separation box (5), and a discharge port (21) is provided at the middle position of the partition (17). A conical discharge block (22) is fixedly arranged at the bottom of the magnetic separation box (5), and vertical grooves are evenly arranged on the upper surface of the conical discharge block (22), and a magnetic block (23) is slidably arranged in the vertical groove.

2. A magnetic separation device for cementing materials according to claim 1, characterized in that: The primary screening assembly comprises a screening plate (6) arranged obliquely in the magnetic separation box (5), and a vibration motor (8) is arranged at the bottom of the screening plate (6).

3. A magnetic separation device for cementing materials according to claim 2, characterized in that: Both sides of the inner wall of the magnetic separation box (5) are provided with through grooves, the screening plate (6) is slidably connected in the through grooves, and two first springs (7) are provided at the bottom of the screening plate (6).

4. A magnetic separation device for cementing materials according to claim 1, characterized in that: The cleaning assembly comprises a fixed box (11) fixed to the side wall of the magnetic separation box (5), a second spring (12) is arranged in the fixed box (11), a limiting plate (13) is arranged at one end of the second spring (12), the limiting plate (13) is slidably connected to the inner wall of the fixed box (11), the other end of the limiting plate (13) is connected to a connecting rod (14), the end of the connecting rod (14) away from the second spring (12) passes through the fixed box (11) and is provided with a cleaning brush (16) through the fixed plate (15).

5. A magnetic separation device for cementing materials according to claim 4, characterized in that: Baffles (18) are obliquely arranged on the top surface of the partition (17) at both sides of the discharge port (21).

6. The magnetic separation device for cementing materials according to claim 1, characterized in that: A rotating disk (3) is arranged inside the feed hopper (1), a rotating shaft (2) is arranged inside the rotating disk (3), the rotating shaft (2) passes through the side wall of the feed hopper (1) and is rotatably connected thereto, and a rotating plate (4) is arranged on the surface of the rotating disk (3).

7. A magnetic separation device for cementing materials according to claim 6, characterized in that: The rotating plates (4) are arranged in a circle and there are at least two of them, and the distances between adjacent rotating plates (4) are equal.

8. The magnetic separation device for cementing materials according to claim 1, characterized in that: Discharge ports (24) are symmetrically arranged on both sides of the bottom of the magnetic separation box (5), and a collection box (25) for use with the discharge ports (24) is arranged above the bottom plate (26).

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