Adjustable suction strainer connection device

Abstract

The utility model relates to the technical field of oil drilling and mining, and discloses an adjustable suction filter screen connecting device, which comprises a main pipeline, a connecting port is formed in the top of the main pipeline, a branch pipeline is fixedly installed at the connecting port of the main pipeline, a valve is installed at one end of the branch pipeline away from the main pipeline, a connecting pipe is installed at one end of the main pipeline, a filter pipe is arranged at one end of the connecting pipe away from the main pipeline, an adjustable filter mechanism is arranged at the top of the filter pipe, clamping mechanisms for disassembling and assembling the filter mechanism are arranged on both sides of the filter pipe, the filter effect of the filter mechanism can be adjusted according to the dynamic change of the drilling working condition, the sudden drop of the viscosity of the mud caused by the filter is avoided, the suspension ability of the drill cuttings is not lost, the drill cuttings are not easy to deposit at the bottom of the well, the risk of sticking drill pipe is not increased, and the problem that the coarse particles enter the drilling pump with the mud due to the underfiltering, directly washing the cylinder sleeve, piston, valve and other core moving parts of the pump is avoided.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and production technology, specifically to an adjustable suction filter connection device. Background Technology

[0002] During oil and gas drilling operations, ensuring the cleanliness of the drilling mud intake is crucial for the proper functioning of the drilling pump. Currently, plate-type suction filters are installed in the drilling pump's suction pipeline to filter the drilling mud.

[0003] However, existing adjustable suction filter connection devices typically use filter plates to directly filter the mud. Since the filtration effect of the filter plates is not adjustable, the device cannot adapt to the dynamic changes in drilling conditions, resulting in either insufficient filtration or under-filtration. Utility Model Content

[0004] This utility model provides an adjustable inhalation filter connection device, which not only allows for adjustment of the filtration effect of the device, but also enables quick replacement of the internal filter structure, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: an adjustable inhalation filter connection device, including a main pipe, a connection port at the top of the main pipe, a branch pipe fixedly installed near the connection port of the main pipe, a valve installed at the end of the branch pipe away from the main pipe, a connecting pipe installed at one end of the main pipe, a filter pipe provided at the end of the connecting pipe away from the main pipe, an adjustable filter mechanism provided at the top of the filter pipe, and a locking mechanism for disassembling and assembling the filter mechanism provided on both sides of the filter pipe.

[0006] Preferably, the filtration mechanism includes a sealing cap disposed on the top of the filter tube, a cylindrical block fixedly connected to the bottom center of the sealing cap, a first filter cylinder fixedly connected to the bottom of the cylindrical block, a second filter cylinder slidably installed inside the first filter cylinder, an adjusting screw rotatably connected to the top center of the second filter cylinder, the top of the adjusting screw passing through the cylindrical block and the sealing cap and extending to the adjusting knob, the adjusting knob being fixedly connected to the adjusting screw, the adjusting screw being threadedly connected to the sealing cap and the cylindrical block, and the bottom of the sealing cap being connected to the filter tube through a limiting member.

[0007] Preferably, the limiting component includes a limiting ring fixedly installed at the bottom of the sealing cover, and the bottom of the limiting ring is uniformly embedded with six limiting teeth, all of which are fixedly connected to the filter tube.

[0008] Preferably, the locking mechanism includes lifting blocks slidably mounted on both sides of the filter tube. Each of the two lifting blocks has a steel ball on an adjacent side. The filter tube has a matching ball groove near the steel ball. Each lifting block has a movable groove on its side near the steel ball. Each cylindrical block has a locking groove near the steel ball. Both the movable groove and the locking groove are adapted to the steel ball. Each lifting block has a force-applying block fixedly connected to its side away from the steel ball. Each force-applying block has a damping pad fixedly connected to its side away from the lifting block. The bottom of each lifting block is connected to the filter tube via an elastic element.

[0009] Preferably, the elastic element includes two first springs disposed at the bottom of the lifting block, and each of the first springs has a limiting rod embedded at both ends, and the limiting rods are fixedly connected to the lifting block and the filter tube respectively.

[0010] Preferably, a second spring is provided at the bottom of the filter tube, and the bottom end of the second spring is fixedly connected to the filter tube.

[0011] This utility model has the following beneficial effects:

[0012] 1. Through the coordinated action of the main pipeline, connection port, branch pipeline, valve, connecting pipe, filter pipe and filter mechanism, users can easily adjust the filtration effect of the filter mechanism according to the dynamic changes of drilling conditions. This avoids the problem of the mud viscosity dropping suddenly due to filtration, losing the ability to suspend drill cuttings, and the drill cuttings easily depositing at the bottom of the well, increasing the risk of stuck pipe, or the problem of coarse particles entering the drilling pump with the mud and directly eroding the pump cylinder liner, piston, valve and other core moving parts.

[0013] 2. Through the coordinated action of the main pipeline, connection port, branch pipeline, valve, connecting pipe, filter pipe, filter mechanism and locking mechanism, it not only makes it convenient for users to replace the filter mechanism inside the device regularly, preventing the filter mechanism from reducing its filtration effect after long-term use, but also allows for stable installation and fixing of the replaced filter mechanism, avoiding loosening and falling off due to accidental human contact. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the filter tube of this utility model.

[0016] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] Figure 4 This is a schematic diagram of the filter mechanism of this utility model.

[0018] Figure 5 This is a schematic diagram of the engaging mechanism of this utility model.

[0019] In the diagram: 1. Main pipe; 2. Connection port; 3. Branch pipe; 4. Valve; 5. Connecting pipe; 6. Filter pipe; 7. Filtering mechanism; 71. Sealing cap; 72. Cylindrical block; 73. First filter cylinder; 74. Second filter cylinder; 75. Adjusting screw; 76. Adjusting knob; 77. Limiting component; 771. Limiting ring; 772. Limiting tooth; 8. Engaging mechanism; 81. Lifting block; 82. Steel ball; 83. Movable groove; 84. Slot; 85. Force application block; 86. Damping pad; 87. Elastic component; 871. First spring; 872. Limiting rod; 9. Second spring. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] This embodiment aims to facilitate the solution to the problem of how to adjust the filtration effect of the device. Please refer to [link / reference needed]. Figures 1-4 An adjustable suction filter connection device includes a main pipe 1, a connection port 2 at the top of the main pipe 1, a branch pipe 3 fixedly installed near the connection port 2, the branch pipe 3 being welded to the main pipe 1, a valve 4 installed at the end of the branch pipe 3 away from the main pipe 1, a connecting pipe 5 installed at one end of the main pipe 1, and a filter pipe 6 installed at the end of the connecting pipe 5 away from the main pipe 1. The main pipe 1, the connecting pipe 5, and the filter pipe 6 are connected by flanges, bolts, and nuts. An adjustable filter mechanism 7 is provided at the top of the filter pipe 6, which can be manually adjusted according to the dynamic changes in drilling conditions. Both sides of the filter pipe 6 are provided with locking mechanisms 8 for disassembling and assembling the filter mechanism 7, making it convenient for users to replace the filter mechanism 7.

[0023] The filtration mechanism 7 includes a sealing cover 71 located at the top of the filter tube 6. A cylindrical block 72 is fixedly connected to the bottom center of the sealing cover 71. Two sealing rings are fitted on the outer surface of the cylindrical block 72, thereby improving the sealing effect between the cylindrical block 72 and the filter tube 6. A first filter cylinder 73 is fixedly connected to the bottom of the cylindrical block 72. A second filter cylinder 74 is slidably installed inside the first filter cylinder 73. Limiting strips are fixed on both sides of the second filter cylinder 74. The second filter cylinder 74 is slidably connected to the first filter cylinder 73 through the limiting strips, thus preventing the second filter cylinder 74 from rotating inside the first filter cylinder 73. The first filter cylinder 73 and the second filter cylinder 74 are connected in a sliding manner. Each filter cylinder 74 has interconnected filter holes of the same diameter. An adjusting screw 75 is rotatably connected to the top center of the second filter cylinder 74. The top of the adjusting screw 75 passes through the cylindrical block 72 and the sealing cover 71 and extends to the adjusting knob 76. The adjusting knob 76 is fixedly connected to the adjusting screw 75. The adjusting screw 75 can move up and down inside the cylindrical block 72 while rotating. The adjusting screw 75 is threadedly connected to the sealing cover 71 and the cylindrical block 72. The bottom of the sealing cover 71 is connected to the filter tube 6 through a limiting member 77. The limiting member 77 can limit the sealing cover 71 and prevent the sealing cover 71 from rotating on the filter tube 6.

[0024] The limiting component 77 includes a limiting ring 771 fixedly installed at the bottom of the sealing cover 71. Six limiting teeth 772 are evenly embedded at the bottom of the limiting ring 771. The limiting teeth 772 are all fixedly connected to the filter tube 6. The user inserts the groove at the bottom of the limiting ring 771 into the outside of the limiting teeth 772.

[0025] In this embodiment, the user can manually rotate the adjustment knob 76 according to the dynamic changes in drilling conditions. While the adjustment knob 76 is rotating, it drives the adjustment screw 75. The adjustment screw 75 rotates inside the sealing cover 71 and the cylindrical block 72 and moves downward. While the adjustment screw 75 moves downward, it drives the second filter cylinder 74, thereby reducing the flow space between the screen holes on the second filter cylinder 74 and the screen holes on the first filter cylinder 73, thereby achieving the purpose of adjusting the filtration effect.

[0026] Example 2

[0027] This embodiment aims to facilitate the replacement of the filter mechanism 7 by the user. This embodiment is an improvement on Embodiment 1. For details, please refer to [link / reference]. Figures 1-5The engaging mechanism 8 includes lifting blocks 81 slidably mounted on both sides of the filter tube 6. Each of the two adjacent lifting blocks 81 has a steel ball 82. The filter tube 6 has a matching ball groove near the steel ball 82, with the diameter of the ball groove near the inner wall of the filter tube 6 being smaller than the diameter of the steel ball 82. Each lifting block 81 has a movable groove 83 near the steel ball 82. The cylindrical block 72 has a locking groove 84 near the steel ball 82. Both the movable groove 83 and the locking groove 84 are adapted to the steel ball 82. Each lifting block 81 has a force-applying block 85 fixedly connected to the side away from the steel ball 82. The filter tube 6 has a matching stroke groove near the force-applying block 85. Each force-applying block 85 has a damping pad 86 fixedly connected to the side away from the lifting block 81. The bottom of each lifting block 81 is connected to the filter tube 6 via an elastic member 87, which can apply an upward thrust to the lifting block 81.

[0028] The elastic component 87 includes two first springs 871 disposed at the bottom of the lifting block 81. Each end of the first spring 871 is embedded with a limiting rod 872. The limiting rod 872 is fixedly connected to the lifting block 81 and the filter tube 6 respectively. The limiting rod 872 can limit the first spring 871 and prevent the first spring 871 from tilting.

[0029] A second spring 9 is provided at the bottom of the filter tube 6. The bottom end of the second spring 9 is fixedly connected to the filter tube 6 and can apply an upward thrust to the filter mechanism 7.

[0030] In this embodiment: The user needs to slide the force blocks 85 on both sides downwards simultaneously. The force blocks 85 drive the lifting block 81 to move downwards, so that the movable groove 83 on the lifting block 81 moves to the ball groove, increasing the range of motion of the steel ball 82. This causes the steel ball 82 to separate from the slot 84 on the cylindrical block 72, so the force at the cylindrical block 72 disappears. The second spring 9 elastically recovers, pushing the first filter cylinder 73, the cylindrical block 72, and the sealing cover 71 upwards, allowing the filter mechanism 7 to be replaced. The first filter cylinder 73 and the cylindrical block 72 at the bottom of the replaced filter mechanism 7 are inserted into the filter tube 6. The force blocks 85 are released, and the force at the force blocks 85 disappears. The first spring 871 pushes the lifting block 81 to rise and reset. As the lifting block 81 rises, it not only causes the movable groove 83 to separate from the ball groove, but also squeezes the steel ball 82, causing a small part of the steel ball 82 to move into the slot 84 inside the cylindrical block 72, thereby installing and fixing the cylindrical block 72.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An adjustable suction filter connection device, comprising a main pipe (1), characterized in that: The main pipe (1) has a connection port (2) at the top. A branch pipe (3) is fixedly installed on the main pipe (1) near the connection port (2). A valve (4) is installed on the end of the branch pipe (3) away from the main pipe (1). A connecting pipe (5) is installed on one end of the main pipe (1). A filter pipe (6) is provided on the end of the connecting pipe (5) away from the main pipe (1). An adjustable filter mechanism (7) is provided on the top of the filter pipe (6). A locking mechanism (8) for disassembling and assembling the filter mechanism (7) is provided on both sides of the filter pipe (6).

2. The adjustable inhalation filter connection device according to claim 1, characterized in that: The filtration mechanism (7) includes a sealing cover (71) set on the top of the filter tube (6). A cylindrical block (72) is fixedly connected to the bottom center of the sealing cover (71). A first filter cylinder (73) is fixedly connected to the bottom of the cylindrical block (72). A second filter cylinder (74) is slidably installed inside the first filter cylinder (73). An adjusting screw (75) is rotatably connected to the top center of the second filter cylinder (74). The top of the adjusting screw (75) passes through the cylindrical block (72) and the sealing cover (71) and extends to the adjusting knob (76). The adjusting knob (76) is fixedly connected to the adjusting screw (75). The adjusting screw (75) is threadedly connected to the sealing cover (71) and the cylindrical block (72). The bottom of the sealing cover (71) is connected to the filter tube (6) through a limiting member (77).

3. The adjustable inhalation filter connection device according to claim 2, characterized in that: The limiting component (77) includes a limiting ring (771) fixedly installed at the bottom of the sealing cover (71). The bottom of the limiting ring (771) is uniformly embedded with six limiting teeth (772), and the limiting teeth (772) are all fixedly connected to the filter tube (6).

4. The adjustable inhalation filter connection device according to claim 2, characterized in that: The locking mechanism (8) includes lifting blocks (81) slidably mounted on both sides of the filter tube (6). Each of the two lifting blocks (81) has a steel ball (82) on an adjacent side. The filter tube (6) has a matching ball groove near the steel ball (82). Each lifting block (81) has a movable groove (83) on a side near the steel ball (82). The cylindrical block (72) has a locking groove (84) near the steel ball (82). Both the movable groove (83) and the locking groove (84) are adapted to the steel ball (82). Each lifting block (81) has a force-applying block (85) fixedly connected to a side away from the steel ball (82). Each force-applying block (85) has a damping pad (86) fixedly connected to a side away from the lifting block (81). The bottom of each lifting block (81) is connected to the filter tube (6) through an elastic element (87).

5. An adjustable inhalation filter connection device according to claim 4, characterized in that: The elastic element (87) includes two first springs (871) disposed at the bottom of the lifting block (81). Each of the two ends of the first spring (871) is fitted with a limiting rod (872), and the limiting rod (872) is fixedly connected to the lifting block (81) and the filter tube (6) respectively.

6. The adjustable inhalation filter connection device according to claim 1, characterized in that: A second spring (9) is provided at the bottom of the filter tube (6), and the bottom end of the second spring (9) is fixedly connected to the filter tube (6).

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