A separation apparatus for purifying drilling fluid

Abstract

The utility model belongs to the technical field of drilling fluid processing, disclose a kind of separation equipment of purifying drilling fluid, including the tank cylinder device for cyclone separation drilling fluid particle, further including the tank cover device for pumping liquid phase external discharge installed in tank cylinder device top, adjusting device for being provided on tank cover device for up and down lifting adjustment suction height;Tank cover device includes tank cover plate, limit slide sleeve is arranged in the middle of tank cover plate, and suction assembly is slidably installed in the middle of limit slide sleeve;Adjusting device includes the fixed frame of vertical setting, and the driving assembly for providing up and down lifting power is arranged in the middle of fixed frame, and driving assembly side is provided with lifting frame.The utility model of a kind of separation equipment of purifying drilling fluid, the millimeter level precision adjustment of suction height is realized by the screw-servo motor driving mechanism passing through, can be adapted to the drilling fluid working condition of different viscosity;Hard straight pipe and the sliding fit structure of limit slide sleeve have sealing property and moving smoothness, and stability is guaranteed by locking peg after adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of drilling fluid treatment technology, and in particular relates to a separation device for purifying drilling fluid. Background Technology

[0002] Drilling fluid separation equipment is an indispensable key piece of equipment in oil drilling operations. It is mainly used to treat waste drilling fluid generated during the drilling process, achieving solid-liquid separation and resource recovery. Solid particles in drilling fluid increase wear on equipment components such as drilling pumps and drill bits, shortening equipment lifespan and increasing maintenance costs and replacement frequency. For example, larger drill cuttings in high-speed flowing drilling fluid act like abrasives, constantly eroding the pump body and drill bit surface, leading to premature damage. Therefore, it is essential to separate solid particles from the drilling fluid in a timely manner.

[0003] Comparing with Chinese Patent No. CN221933182U, a drilling fluid solid-liquid separation device is disclosed, including a base. A separation box is snapped into the inner wall of the base. Through the arrangement of a fixing frame, a connecting frame, a filter screen, and a handle, in use, the fixing frame has slots on both sides with the same length as the connecting frame. The connecting frame has a filter screen inside, which can filter the separated drilling fluid and effectively filter out the fine solids that are not separated. When too much solids accumulate on the filter screen, the handle can be pulled to pull out the connecting frame, clean the solids on the filter screen, and put it back into the fixing frame for reuse. The separated solids are conveyed upward along the inner wall of the separation device and then accumulate to the discharge port. The discharge port is inclined downward. After accumulating to a certain amount, they fall downward. With the cooperation of the separation mechanism, the device can prevent clogging during the filtration of drilling fluid.

[0004] However, the aforementioned patented equipment needs to be stopped and cleaned after a period of operation, which is time-consuming and labor-intensive, and cannot be adjusted according to drilling fluid with different viscosities, resulting in poor adaptability. Therefore, a new type of equipment needs to be designed. Utility Model Content

[0005] The purpose of this invention is to provide a separation device for purifying drilling fluid, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A separation device for purifying drilling fluid includes a tank assembly for cyclone separation of drilling fluid particles, and a cover assembly installed on the top of the tank assembly for suction and discharge of the liquid phase. The cover assembly is equipped with an adjustment device for adjusting the suction height by raising and lowering it. The cover assembly includes a cover plate with a limiting sleeve in the middle, and a suction component is slidably mounted in the middle of the limiting sleeve. The adjustment device includes a vertically mounted fixed frame with a drive assembly in the middle for providing vertical lifting power. A lifting frame is provided on one side of the drive assembly, and a locking pin is installed on the lifting frame.

[0008] Furthermore: the box-shaped device includes a box-shaped body, an inlet pipe is provided on one side of the top of the box-shaped body, the liquid flows in tangentially along the box-shaped body, a waste discharge pipe is provided at the bottom of the box-shaped body, and a waste discharge valve is installed on the waste discharge pipe.

[0009] Furthermore, a converging cone is provided on the bottom surface of the box body, and three supporting legs are evenly distributed on the outer periphery of the converging cone.

[0010] Furthermore: the suction assembly includes a rigid tube, a filter head is installed at the bottom end of the rigid tube, and a flexible bend is installed at the top end of the rigid tube.

[0011] Furthermore: a sealing gasket is pasted on the bottom surface of the box cover, and the limiting sleeve is riveted together with the box cover.

[0012] Furthermore: the drive assembly includes a lead screw installed in the middle of the fixed frame, a servo motor provided at the top of the lead screw, and a threaded sleeve slider connected in the middle of the lead screw.

[0013] Furthermore: the lifting frame and the screw sleeve slider are riveted together, and the fixing frame and the box cover are bolted together.

[0014] Compared with existing technologies, the beneficial effects are:

[0015] 1. The screw-servo motor drive mechanism enables precise millimeter-level adjustment of the suction height, adapting to drilling fluid conditions of different viscosities; the sliding fit structure between the rigid straight pipe and the limiting sleeve combines sealing and smooth movement, and the locking pin ensures stability after adjustment.

[0016] 2. The tangential liquid inlet design creates a vortex, which uses centrifugal force to achieve rapid solid-liquid separation, significantly improving particle removal efficiency; the separation and suction processes are carried out simultaneously, and the timed opening and closing design of the waste discharge valve ensures continuous system operation, avoiding the problem of frequent shutdowns for cleaning in traditional equipment;

[0017] 3. The three-section suction assembly design of filter head - rigid straight tube - flexible bend tube ensures both suction strength and easy replacement of key components; the cover plate and the box body adopt a bolt-tightened sealing gasket structure, which enables quick disassembly and maintenance while ensuring a high-pressure environment seal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a separation device for purifying drilling fluid according to the present invention;

[0019] Figure 2 This is a schematic diagram of the tank device of the separation equipment for purifying drilling fluid according to the present invention;

[0020] Figure 3 This is a front perspective view of the tank and cylinder device of the drilling fluid purification separation equipment described in this utility model;

[0021] Figure 4 This is a schematic diagram of the cover device of the separation equipment for purifying drilling fluid according to the present invention;

[0022] Figure 5 This is a schematic diagram of the regulating device of the separation equipment for purifying drilling fluid according to the present invention;

[0023] Figure 6 This is a front perspective view of the adjustment device of the separation equipment for purifying drilling fluid described in this utility model.

[0024] In the attached diagram, the following are the reference numerals: 101, tank body; 102, inlet pipe; 103, converging cone; 104, support leg; 105, waste discharge pipe; 106, waste discharge valve; 201, tank cover plate; 202, limiting sleeve; 203, rigid straight pipe; 204, flexible bend pipe; 205, filter head; 206, sealing gasket; 301, fixing frame; 302, lead screw; 303, servo motor; 304, screw sleeve slider; 305, lifting frame; 306, locking pin. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 A separation device for purifying drilling fluid includes a tank device for cyclone separation of drilling fluid particles, and a tank cover device installed on the top of the tank device for suction of liquid phase discharge. The tank cover device is provided with an adjustment device for adjusting the suction height by raising and lowering it.

[0027] In this embodiment: the box device includes a box body 101, an inlet pipe 102 is provided on one side of the top of the box body 101, the inlet pipe 102 flows tangentially into the box body 101, a waste discharge pipe 105 is provided at the bottom of the box body 101, and a waste discharge valve 106 is installed on the waste discharge pipe 105; a converging cone 103 is provided on the bottom surface of the box body 101, and three supporting legs 104 are evenly distributed on the outer periphery of the converging cone 103; the drilling fluid flows tangentially into the box body 101 from the inlet pipe 102 to form a vortex, causing the particles in the drilling fluid to flow down the inner wall of the box body 101 to the converging cone 103 under the action of centrifugal force, and finally converge into the waste discharge pipe 105. The waste discharge valve 106 is opened at regular intervals to discharge the drilling fluid particles.

[0028] In this embodiment: the cover device includes a cover plate 201, a limiting sleeve 202 is provided in the middle of the cover plate 201, and a suction assembly is slidably installed in the middle of the limiting sleeve 202; the suction assembly includes a rigid tube 203, a filter head 205 is installed at the bottom end of the rigid tube 203, and a flexible bend 204 is installed at the top end of the rigid tube 203; a sealing gasket 206 is pasted on the bottom surface of the cover plate 201, and the limiting sleeve 202 and the cover plate 201 are riveted together; during installation, the cover plate 201 is fixed to the bottom of the box body 101 with bolts, the sealing gasket 206 ensures the seal between the cover plate 201 and the box body 101, the limiting sleeve 202 in the middle of the cover plate 201 is used to support the vertical movement of the rigid tube 203, and the drilling fluid, under the action of the external suction equipment, is filtered by the filter head 205 and then sucked in from the rigid tube 203 and flows out along the flexible bend 204;

[0029] In this embodiment: the adjustment device includes a vertically mounted fixed frame 301, a drive assembly for providing vertical lifting power is disposed in the middle of the fixed frame 301, a lifting frame 305 is disposed on one side of the drive assembly, and a locking pin 306 is installed on the lifting frame 305; the drive assembly includes a lead screw 302 installed in the middle of the fixed frame 301, a servo motor 303 disposed at the top of the lead screw 302, and a threaded sleeve slider 304 threadedly connected to the middle of the lead screw 302; the lifting frame 305 and the threaded sleeve slider 304 are riveted together. The fixed frame 301 and the box cover plate 201 are bolted together; the rigid tube 203 slides up and down along the lifting frame 305 to adjust the base height of the filter head 205, and the locking nail 306 is tightened to fix it. When it is necessary to adjust the height of the filter head 205, the fixed frame 301 supports the four-way drive screw 302 to rotate, push the screw sleeve slider 304 to drive the lifting frame 305 to move up and down along the fixed frame 301, so that the lifting frame 305 drives the rigid tube 203 to push the filter head 205 up and down to adjust the depth of the drilling fluid.

[0030] Working principle: During installation, the cover plate 201 is first fixed to the bottom of the cylinder 101 with bolts. The sealing gasket 206 ensures the seal between the cover plate 201 and the cylinder 101. Then, supported by the limiting sliding sleeve 202 in the middle of the cover plate 201, the rigid straight pipe 203 is slid up and down along the lifting frame 305 to adjust the base height of the filter head 205, and the locking nail 306 is tightened to fix it. During operation, the drilling fluid flows tangentially into the cylinder 101 from the inlet pipe 102, forming a vortex. This causes the particles in the drilling fluid to flow down the inner wall of the cylinder 101 to the converging cone 1 under the action of centrifugal force. 03. Finally, the fluid flows into the waste discharge pipe 105. The waste discharge valve 106 is opened periodically to discharge the drilling fluid particles. The drilling fluid, under the action of the external suction equipment, is filtered through the filter head 205 and then sucked into the rigid pipe 203 and flows out along the flexible bend pipe 204. When it is necessary to adjust the height of the filter head 205, the fixed frame 301 supports the four-way drive screw 302 to rotate, pushing the screw sleeve slider 304 to drive the lifting frame 305 to move up and down along the fixed frame 301. This causes the lifting frame 305 to drive the rigid pipe 203 to push the filter head 205 up and down, adjusting the depth of the fluid entering the drilling fluid.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A separation device for purifying drilling fluid, comprising a tank device for cyclone separation of drilling fluid particles, characterized in that: It also includes a box cover device installed on the top of the box cylinder device for pumping out the liquid phase, and the box cover device is equipped with an adjustment device for adjusting the pumping height by raising and lowering it. The box cover device includes a box cover plate (201), a limiting sleeve (202) is provided in the middle of the box cover plate (201), and a suction component is slidably installed in the middle of the limiting sleeve (202); The adjustment device includes a vertically mounted fixed frame (301), a drive component for providing vertical lifting power is provided in the middle of the fixed frame (301), a lifting frame (305) is provided on one side of the drive component, and a locking pin (306) is installed on the lifting frame (305).

2. The separation equipment for purifying drilling fluid according to claim 1, characterized in that: The box device includes a box body (101), an inlet pipe (102) is provided on one side of the top of the box body (101), the inlet pipe (102) flows tangentially into the box body (101), a waste discharge pipe (105) is provided at the bottom of the box body (101), and a waste discharge valve (106) is installed on the waste discharge pipe (105).

3. The separation equipment for purifying drilling fluid according to claim 2, characterized in that: The bottom surface of the box body (101) is provided with a converging cone (103), and three supporting legs (104) are evenly distributed on the outer periphery of the converging cone (103).

4. The separation equipment for purifying drilling fluid according to claim 1, characterized in that: The suction assembly includes a rigid tube (203), a filter head (205) is installed at the bottom end of the rigid tube (203), and a flexible bend tube (204) is installed at the top end of the rigid tube (203).

5. The separation equipment for purifying drilling fluid according to claim 4, characterized in that: A sealing gasket (206) is pasted on the bottom surface of the box cover plate (201), and the limiting sleeve (202) and the box cover plate (201) are riveted together.

6. The separation equipment for purifying drilling fluid according to claim 1, characterized in that: The drive assembly includes a lead screw (302) mounted in the middle of the fixed frame (301), a servo motor (303) at the top of the lead screw (302), and a threaded sleeve slider (304) connected in the middle of the lead screw (302).

7. The separation device for purifying drilling fluid according to claim 6, characterized in that: The lifting frame (305) and the screw sleeve slider (304) are riveted together, and the fixing frame (301) and the box cover plate (201) are bolted together.

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