Solid-liquid separation equipment for drilling wastewater treatment

Abstract

The utility model relates to solid-liquid separation equipment for drilling wastewater treatment, which relates to the technical field of drilling wastewater treatment and comprises a tank body, a filter cartridge is arranged in the tank body, a plurality of first filter holes are arranged on the filter cartridge, and a moving component for driving the filter cartridge to move is arranged on the tank body. Drilling wastewater is guided into the tank body, solid impurities in the drilling wastewater are blocked by the filter box and are left in the filter box, the wastewater passes through the first filter holes and then is discharged through the water outlet pipe to enter subsequent equipment, and after the filter box is used for a period of time, the moving assembly is started to drive the filter box to move, so that the filter box is moved out of the tank body; then impurities in the filter box can be cleaned, so that the convenience of cleaning the filter box is improved, the probability of blockage of the filter box is reduced, and the solid-liquid separation efficiency of the drilling wastewater is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling wastewater treatment, in particular to a solid-liquid separation device for drilling wastewater treatment. Background Art

[0002] Drilling wastewater is industrial wastewater generated during drilling operations in oil and gas field development. It is mainly a mixture of drilling fluid, formation outflow water, waste mud, rock cuttings, clay, oil and other substances. The composition of drilling wastewater is complex and cannot be discharged directly into the environment.

[0003] Common methods for treating drilling wastewater in the prior art include gravity separation, chemical coagulation, biochemical treatment, membrane separation, and electrochemical treatment. Drilling wastewater is treated by combining one or more of these methods to reduce the content of harmful substances in the drilling wastewater.

[0004] When treating drilling wastewater, the solid impurities contained in the drilling wastewater are usually separated first to improve the subsequent wastewater treatment efficiency. There are two common solid-liquid separation methods. One is to directly use the static sedimentation method to allow the solid impurities in the wastewater to precipitate, and the supernatant enters the subsequent treatment equipment. This method is low-cost, but time-consuming and inefficient. The other is to filter the wastewater through the filter screen, which blocks the solid impurities. After the wastewater passes through the filter screen, it enters the subsequent treatment equipment. This method requires timely replacement of the filter screen or cleaning of the impurities on the filter screen, otherwise the filter screen is very easy to be blocked, thereby reducing the efficiency of solid-liquid separation of drilling wastewater. Utility Model Content

[0005] In order to improve the efficiency of solid-liquid separation of drilling wastewater, the utility model provides a solid-liquid separation device for drilling wastewater treatment.

[0006] The present application provides a solid-liquid separation device for drilling wastewater treatment, which adopts the following technical solution:

[0007] A solid-liquid separation device for drilling wastewater treatment comprises a tank body, the top of which is open, a water outlet pipe is provided at the bottom of the tank body, a filter box is provided in the tank body, the top of which is open, the filter box has a plurality of first filter holes, and a moving component for driving the filter box to move is provided on the tank body.

[0008] By adopting the above technical solution, drilling wastewater is introduced into the tank body, and the solid impurities in the drilling wastewater are blocked by the filter box and remain in the filter box. The wastewater passes through the first filter hole and is discharged through the outlet pipe into the subsequent equipment. After the filter box has been used for a period of time, the moving component starts to drive the filter box to move, so that the filter box is moved out of the tank body, and then the impurities in the filter box can be cleaned, thereby improving the convenience of cleaning the filter box and reducing the probability of clogging the filter box, thereby improving the efficiency of solid-liquid separation of drilling wastewater.

[0009] Optionally, the mobile component includes:

[0010] A connecting rod, the connecting rod is arranged on the filter box and extends upward;

[0011] A driving member is arranged on the tank body and connected to the connecting rod and is used to drive the filter box to move.

[0012] By adopting the above technical solution, the driving member is started to drive the connecting rod to move, and the movement of the connecting rod drives the filter box to move, thereby realizing the movement of the filter box and improving the convenience of cleaning the filter box.

[0013] Optionally, a filter screen is provided in the tank body, the filter screen is located below the filter box, the filter screen has a plurality of second filter holes with a smaller aperture than the first filter holes, and a rotating component for driving the filter screen to rotate is provided on the tank body.

[0014] By adopting the above technical scheme, the drilling wastewater is filtered through the filter box, impurities with a particle size larger than the first filter hole remain on the filter box, impurity mixed wastewater with a particle size smaller than the first filter hole passes through the filter net, impurities with a particle size larger than the second filter hole remain on the filter net, and the wastewater is discharged through the outlet pipe after passing through the second filter hole. The double filtration of the filter box and the filter net is improved. When the filter net needs to be cleaned, the introduction of drilling wastewater is stopped, the rotating component is started to drive the filter net to rotate, and the impurities remaining on the filter net slide off the filter net and are discharged through the outlet pipe, so that the impurities on the filter net are cleaned, thereby improving the convenience of cleaning the filter net, reducing the probability of filter net clogging, and thus improving the efficiency of solid-liquid separation of drilling wastewater.

[0015] Optionally, the rotating assembly includes:

[0016] A rotating rod, the rotating rod is rotatably arranged in the tank body, and the filter screen is arranged on the rotating rod;

[0017] A rotating motor is arranged on the tank body and an output shaft is connected with the rotating rod.

[0018] By adopting the above technical solution, the rotating motor is started to drive the rotating rod to rotate, and the rotating rod drives the filter to rotate, so that the impurities remaining on the filter slide off the filter to the outlet pipe for discharge, thereby realizing the cleaning of the filter and improving the convenience of cleaning the filter.

[0019] Optionally, the driving member is an electric push rod, and the connecting rod is detachably connected to the electric push rod via a connecting assembly.

[0020] By adopting the above technical solution, the electric push rod drives the connecting rod to move, thereby driving the filter box to move. After the filter box is moved out of the tank, the connecting assembly is opened to replace the filter box. By replacing the damaged filter box, the filtration efficiency is improved, thereby improving the efficiency of solid-liquid separation of drilling wastewater.

[0021] Optionally, the connection component includes:

[0022] A connecting plate, the connecting plate is arranged on the telescopic end of the electric push rod, and the connecting rod is buckled on the connecting plate;

[0023] A locking bolt passes through the connecting plate and the connecting rod, and a locking nut for positioning is threadedly connected to the locking bolt.

[0024] By adopting the above technical solution, the locking nut is rotated to disengage from the locking bolt, and the connecting rod is pushed to disengage from the connecting plate. Then, the filter box can be replaced, and the connecting rod of the replaced filter box is buckled on the connecting plate and positioned by the locking bolt and the locking nut, so as to realize the disassembly, replacement and installation of the filter box, thereby improving the convenience of filter box replacement.

[0025] Optionally, a vertical guide strip is provided in the tank body, and the filter box sliding sleeve is provided on the guide strip.

[0026] By adopting the above technical solution, the guide strip guides and limits the movement of the filter box, thereby improving the convenience and stability of the movement of the filter box.

[0027] Optionally, a shielding cover is hinged on the top of the tank body, and a avoidance hole for the connection plate to pass through is opened on the shielding cover.

[0028] By adopting the above technical solution, the shielding cover shields the top of the tank body, reducing the probability of impurities in the environment entering the tank body. When the filter box needs to be removed, the shielding cover is rotated to expose the top of the tank body, and the electric push rod is started to drive the filter box to move. After the replacement is completed, the electric push rod moves back to drive the filter box into the tank body, and then the shielding cover is rotated to shield the top of the tank body. At this time, the connecting plate is located in the avoidance hole, thereby reducing the probability of impurities in the external environment entering the tank body.

[0029] Optionally, a visual observation window is provided on the tank body.

[0030] By adopting the above technical solution, the visual observation window makes it easy for the operator to observe the inside of the tank, so as to clean the filter box and the filter screen when they are blocked, thereby reducing the probability of the filter box and the filter screen being blocked for a long time.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. Drilling wastewater is introduced into the tank body, and the solid impurities in the drilling wastewater are blocked by the filter box and remain in the filter box. After the wastewater passes through the first filter hole, it is discharged through the outlet pipe into the subsequent equipment. After the filter box has been used for a period of time, the moving component starts to drive the filter box to move, so that the filter box is moved out of the tank body, and then the impurities in the filter box can be cleaned, thereby improving the convenience of cleaning the filter box and reducing the probability of clogging the filter box, thereby improving the efficiency of solid-liquid separation of drilling wastewater.

[0033] 2. The drilling wastewater is filtered through the filter box, and impurities with a particle size larger than the first filter hole remain on the filter box, and impurity mixed wastewater with a particle size smaller than the first filter hole passes through the filter net. Impurities with a particle size larger than the second filter hole remain on the filter net. After the wastewater passes through the second filter hole, it is discharged through the outlet pipe. The double filtration of the filter box and the filter net improves the effect of solid-liquid separation of drilling wastewater. When the filter net needs to be cleaned, stop introducing drilling wastewater, start the rotating assembly to drive the filter net to rotate, and the impurities remaining on the filter net slide off the filter net and are discharged through the outlet pipe, so as to clean the impurities on the filter net, thereby improving the convenience of cleaning the filter net and reducing the probability of filter net clogging, thereby improving the efficiency of solid-liquid separation of drilling wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of this application;

[0035] Figure 2 is a schematic diagram of the structure of the filter box in the present application, wherein the shielding cover is in an open state;

[0036] Figure 3 is a partial cross-sectional view of the tank body in this application;

[0037] Figure 4 is a schematic diagram of the structure of the connecting rod in the present application, wherein the tank body is partially cut away;

[0038] Figure 5 is a schematic diagram of the structure of the connection assembly in the present application, wherein the connection rod is partially cut away;

[0039] Figure 6 It is a schematic diagram of the filter screen in the present application in a rotating state, in which the tank body is partially cut away.

[0040] Figure numerals: 1. tank body; 11. water inlet pipe; 12. water outlet pipe; 13. shielding cover; 131. avoidance hole; 14. visual observation window; 15. guide strip; 16. support block; 17. vibration motor; 2. filter box; 21. first filter hole; 22. guide groove; 3. moving assembly; 31. connecting rod; 311. vertical part; 312. horizontal part; 313. buckling groove; 32. driving member; 321. electric push rod; 4. connecting assembly; 41. connecting plate; 42. locking bolt; 43. locking nut; 5. filter net; 51. second filter hole; 6. rotating assembly; 61. rotating rod; 62. rotating motor. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-6 This application is described in further detail.

[0042] The embodiment of the present application discloses a solid-liquid separation device for treating drilling wastewater.

[0043] Reference Figure 1 and Figure 2 A solid-liquid separation device for drilling wastewater treatment includes a tank body 1, the top of the tank body 1 is in an open state, an inlet pipe 11 is fixedly provided on the outer wall of the top of the tank body 1, the inlet pipe 11 is connected to the tank body 1, and a water outlet pipe 12 connected to the tank body 1 is fixedly provided at the bottom of the tank body 1, a filter box 2 is provided in the tank body 1, and a moving component 3 for driving the filter box 2 to move is provided on the tank body 1.

[0044] Reference Figure 1 and Figure 2 A shielding cover 13 is hinged on the top of the tank body 1 for shielding the top opening of the tank body 1 , and a transparent visual observation window 14 is provided on the outer wall of the tank body 1 .

[0045] Reference Figure 3 and Figure 4 The top of the filter box 2 is open, and a plurality of first filter holes 21 are provided on the filter box 2. The filter box 2 is vertically slidably arranged in the tank body 1, and vertical guide strips 15 are provided on two opposite inner walls of the tank body 1.

[0046] Reference Figure 4 and Figure 5 Vertical guide grooves 22 are provided on the two opposite outer walls of the filter box 2, and the guide grooves 22 correspond to the guide strips 15 one by one. The filter box 2 is slidably sleeved on the guide strips 15 through the guide grooves 22. A support block 16 for supporting the filter box 2 is provided at the bottom end of the guide strip 15. When the filter box 2 is installed in place, the bottom end of the filter box 2 is pressed against the support block 16.

[0047] Reference Figure 2 and Figure 4The moving assembly 3 includes a connecting rod 31 and a driving member 32. The connecting rod 31 includes a vertical portion 311 and a horizontal portion 312 that are integrally arranged together. The vertical portion 311 is fixedly mounted on the filter box 2 and extends vertically upward. The horizontal portion 312 is located at one end of the vertical portion 311 away from the filter box 2 and extends horizontally. The driving member 32 is arranged on the tank body 1 and is connected to the connecting rod 31 and is used to drive the filter box 2 to move.

[0048] Reference Figure 4 and Figure 5 The driving member 32 is an electric push rod 321, which is fixed on the outer wall of the tank body 1. The connecting rod 31 is detachably connected to the electric push rod 321 through a connecting assembly 4. The connecting assembly 4 includes a connecting plate 41 and a locking bolt 42. The connecting plate 41 is fixed on the telescopic end of the electric push rod 321 and is located below the horizontal portion 312. A buckling groove 313 corresponding to the connecting plate 41 is provided on the lower surface of the horizontal portion 312. The horizontal portion 312 is buckled on the connecting plate 41 through the buckling groove 313. In other embodiments, the driving member 32 may also be a cylinder.

[0049] Reference Figure 4 and Figure 5 There are multiple locking bolts 42, and the multiple locking bolts 42 vertically pass through the horizontal portion 312 and the connecting plate 41. The locking bolts 42 are provided with locking nuts 43 for positioning. There are multiple locking nuts 43 and they correspond to the locking bolts 42 one by one. The locking nuts 43 are threadedly connected to the locking bolts 42 and pressed against the lower surface of the connecting plate 41.

[0050] Reference Figure 2 and Figure 4 When the filter box 2 is pressed against the support block 16, the lower surface of the horizontal portion 312 abuts against the top of the tank body 1, and the shielding cover 13 is provided with an avoidance hole 131 for the connecting plate 41 and the horizontal portion 312 to pass through.

[0051] Reference Figure 3 and Figure 4 A filter screen 5 is also provided in the tank body 1. The filter screen 5 is located below the filter box 2 and above the water outlet pipe 12. The filter screen 5 has a plurality of second filter holes 51 with a smaller aperture than the first filter hole 21. A rotating component 6 for driving the filter screen 5 to rotate is provided on the tank body 1.

[0052] Reference Figure 3 and Figure 6 The rotating assembly 6 includes a rotating rod 61 and a rotating motor 62. The rotating rod 61 is rotatably installed in the tank body 1. The filter screen 5 is fixed on the rotating rod 61. The rotating rod 61 is located on the center line of the filter screen 5. The rotating motor 62 is installed on the outer wall of the tank body 1. The output shaft of the rotating motor 62 extends into the tank body 1 and is connected to the rotating rod 61; a vibration motor 17 is provided on the outer wall of the tank body 1.

[0053] Reference Figure 3 and Figure 6 The drilling wastewater is introduced into the tank body 1 through the water inlet pipe 11, and the drilling wastewater is filtered through the filter box 2. Impurities with a particle size larger than the first filter hole 21 remain on the filter box 2, and impurity mixed wastewater with a particle size smaller than the first filter hole 21 passes through the filter net 5. Impurities with a particle size larger than the second filter hole 51 remain on the filter net 5. After the wastewater passes through the second filter hole 51, it is discharged through the outlet pipe 12. The double filtration of the filter box 2 and the filter net 5 improves the effect of solid-liquid separation of the drilling wastewater, thereby improving the efficiency of solid-liquid separation of the drilling wastewater.

[0054] Reference Figure 2 and Figure 6 When the filter box 2 needs to be cleaned or replaced, the shielding cover 13 is rotated to expose the top of the tank body 1, and the electric push rod 321 is started to drive the filter box 2 to move upward through the connecting plate 41 until the bottom end of the filter box 2 moves out of the top of the tank body 1, and then the impurities in the filter box 2 can be cleaned, and the locking nut 43 is rotated and the locking bolt 42 is removed to replace the filter box 2; when the filter screen 5 needs to be cleaned, the introduction of drilling wastewater is stopped, and the rotating motor 62 is started to drive the filter screen 5 to rotate, and the impurities remaining on the filter screen 5 slide off the filter screen 5 and are discharged through the water outlet pipe 12, and the vibration motor 17 is started at the same time to clean the impurities on the filter screen 5, thereby improving the convenience of cleaning the filter box 2 and the filter screen 5, reducing the probability of clogging of the filter box 2 and the filter screen 5, and thus improving the efficiency of solid-liquid separation of drilling wastewater.

[0055] The working principle of the embodiment of the present application is as follows:

[0056] The drilling wastewater is introduced into the tank body 1 through the water inlet pipe 11, and the drilling wastewater is filtered through the filter box 2. Impurities with a particle size larger than the first filter hole 21 remain on the filter box 2, and impurity mixed wastewater with a particle size smaller than the first filter hole 21 passes through the filter screen 5. Impurities with a particle size larger than the second filter hole 51 remain on the filter screen 5. After the wastewater passes through the second filter hole 51, it is discharged through the outlet pipe 12. The double filtration of the filter box 2 and the filter screen 5 improves the effect of solid-liquid separation of the drilling wastewater. The electric push rod 321 is started to drive the filter box 2 to move, so as to clean the filter box 2. The rotating motor 62 is started to drive the filter screen 5 to rotate, so as to clean the impurities remaining on the filter screen 5, thereby reducing the probability of clogging of the filter box 2 and the filter screen 5, thereby improving the efficiency of solid-liquid separation of the drilling wastewater.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A solid-liquid separation device for drilling wastewater treatment, characterized in that: The invention comprises a tank body (1), the top end of the tank body (1) is in an open state, the bottom end of the tank body (1) is provided with a water outlet pipe (12), a filter box (2) is provided inside the tank body (1), the top end of the filter box (2) is in an open state, the filter box (2) has a plurality of first filter holes (21), and a moving component (3) for driving the filter box (2) to move is provided on the tank body (1).

2. The solid-liquid separation equipment for drilling wastewater treatment according to claim 1, characterized in that: The moving component (3) comprises: A connecting rod (31), wherein the connecting rod (31) is disposed on the filter box (2) and extends upward; A driving member (32), wherein the driving member (32) is arranged on the tank body (1) and connected to the connecting rod (31) and is used to drive the filter box (2) to move.

3. The solid-liquid separation equipment for drilling wastewater treatment according to claim 2, characterized in that: A filter screen (5) is provided in the tank body (1), the filter screen (5) is located below the filter box (2), the filter screen (5) has a plurality of second filter holes (51) with a smaller aperture than the first filter hole (21), and a rotating assembly (6) for driving the filter screen (5) to rotate is provided on the tank body (1).

4. The solid-liquid separation equipment for drilling wastewater treatment according to claim 3, characterized in that: The rotating assembly (6) comprises: A rotating rod (61), the rotating rod (61) being rotatably disposed in the tank body (1), and the filter screen (5) being disposed on the rotating rod (61); A rotating motor (62) is arranged on the tank body (1) and the output shaft of the rotating motor (62) is connected to the rotating rod (61).

5. The solid-liquid separation equipment for drilling wastewater treatment according to claim 2, characterized in that: The driving member (32) is an electric push rod (321), and the connecting rod (31) is detachably connected to the electric push rod (321) via a connecting assembly (4).

6. The solid-liquid separation equipment for drilling wastewater treatment according to claim 5, characterized in that: The connection component (4) comprises: A connecting plate (41), wherein the connecting plate (41) is arranged on the telescopic end of the electric push rod (321), and the connecting rod (31) is buckled on the connecting plate (41); A locking bolt (42) passes through the connecting plate (41) and the connecting rod (31), and a locking nut (43) for positioning is threadedly connected to the locking bolt (42).

7. The solid-liquid separation equipment for drilling wastewater treatment according to claim 2, characterized in that: A vertical guide strip (15) is provided in the tank body (1), and the filter box (2) is slidably sleeved on the guide strip (15).

8. The solid-liquid separation equipment for drilling wastewater treatment according to claim 5, characterized in that: A shielding cover (13) is hingedly connected to the top of the tank body (1), and a avoiding hole (131) for the connection plate (41) to pass through is provided on the shielding cover (13).

9. The solid-liquid separation equipment for drilling wastewater treatment according to claim 1, characterized in that: The tank body (1) is provided with a visual observation window (14).

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