Drilling fluid filtering device for sample analysis

Abstract

The utility model relates to the field of filtering equipment, in particular to a drilling fluid filtering device for sample analysis, which comprises a base, a manual driving mechanism is arranged on the base and comprises a transmission shaft extending vertically, a centrifugal cabin is arranged at the upper end of the base, and a filter cartridge with an opening at the upper end is rotatably arranged in the centrifugal cabin. A liquid inlet pipe is arranged at the upper end of the centrifugal cabin, the liquid inlet pipe is detachably connected with the centrifugal cabin, the lower end of the liquid inlet pipe extends into the centrifugal cabin, the upper end of the filter cartridge is rotationally connected with the liquid inlet pipe, a drain valve is arranged at the lower end of the centrifugal cabin, a support is arranged on the side face of the liquid inlet pipe, and a funnel is rotationally arranged at the upper end of the support; a filter screen is arranged in the funnel, and a hose is arranged between the funnel and the liquid inlet pipe. The filtering device has the advantages of high adaptability and good filtering effect.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment, and in particular to a drilling fluid filtration device for sample analysis. Background Technology

[0002] During drilling operations, drilling fluid is a crucial auxiliary material, serving functions such as carrying cuttings, balancing low-level pressure, transmitting hydrodynamic forces, providing geological data, protecting oil and gas reservoirs, and lubrication. During its use, drilling fluid samples need to be taken and analyzed periodically to test its physical and chemical properties and obtain low-level information. When testing physical and chemical properties, the drill fluid samples need to be filtered. Many filtration devices simply use screens, resulting in poor filtration and affecting the accuracy of sample analysis. Meanwhile, some high-precision filtration devices are often inconvenient to carry to the site and require external assistance, such as a power source. Therefore, developing a drilling fluid filtration device for sample analysis that requires no external assistance, is highly adaptable, and offers excellent filtration performance is particularly necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a drilling fluid filtration device for sample analysis, which has the advantages of requiring no external assistance, strong adaptability, and good filtration effect.

[0004] The technical solution adopted is as follows:

[0005] A drilling fluid filtration device for sample analysis includes a base with a manual drive mechanism. The manual drive mechanism includes a vertically extending drive shaft. A centrifuge chamber is located at the upper end of the base, and a filter cartridge with an open upper end is rotatably mounted inside the centrifuge chamber. The filter cartridge is coaxially and detachably connected to the drive shaft. An inlet pipe is located at the upper end of the centrifuge chamber and is detachably connected to the centrifuge chamber. The lower end of the inlet pipe extends into the centrifuge chamber. The upper end of the filter cartridge is rotatably connected to the inlet pipe. A drain valve is located at the lower end of the centrifuge chamber. A support is located on the side of the inlet pipe, and a funnel is rotatably mounted on the upper end of the support. A filter screen is installed inside the funnel, and a flexible hose is installed between the funnel and the inlet pipe.

[0006] Preferably, a spring is provided between the funnel and the inlet pipe, which is sleeved on the outside of the hose.

[0007] Preferably, the manual drive mechanism includes a hand-cranked gear speed increaser.

[0008] Preferably, the filter cartridge is sleeved on the outside of the liquid inlet pipe.

[0009] Preferably, the bottom of the centrifuge chamber is conical.

[0010] Preferably, the centrifuge chamber is made of transparent acrylic material.

[0011] Compared to existing technologies, the advantages are:

[0012] 1. This utility model can be adapted to outdoor construction site environments to filter drilling fluid samples. The process only requires manual operation and does not require power supply or external auxiliary equipment. It is highly adaptable. Compared with filtration by gravity and filter screen alone, this utility model improves the cleanliness of drilling fluid samples by adding centrifugal filtration. The filtration effect is good, making the results of drilling fluid testing more accurate in subsequent processes.

[0013] 2. In this utility model, a spring is provided between the funnel and the inlet pipe, which is sleeved on the outside of the hose. Under the action of the spring force, the funnel is in the open-up state. When pouring out the impurities on the filter screen, the funnel is manually tilted to pour out the impurities on the filter screen. Then, the hand is released, and the funnel automatically returns to the vertical state under the action of the spring. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a drilling fluid filtration device for sample analysis according to this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of a drilling fluid filtration device for sample analysis according to this utility model.

[0016] In the diagram: 1. Base; 2. Manual drive mechanism; 3. Drive shaft; 4. Centrifuge chamber; 5. Filter cartridge; 6. Inlet pipe; 7. Flange; 8. Drain valve; 9. Support; 10. Funnel; 11. Hose; 12. Spring; 13. Filter screen. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 2 As shown:

[0018] Example 1: A drilling fluid filtration device for sample analysis includes a base 1, a manual drive mechanism 2 is provided at the upper end of the base 1, the manual drive mechanism 2 includes a vertically extending drive shaft 3, a centrifuge chamber 4 is provided at the upper end of the base 1, the drive shaft 3 extends from the lower end of the centrifuge chamber 4 into the centrifuge chamber 4, the drive shaft 3 is rotatably and sealedly connected to the centrifuge chamber 4, a filter cartridge 5 with an open upper end is detachably provided at the upper end of the drive shaft 3, the filter cartridge 5 is provided in the centrifuge chamber 4, the centrifuge chamber 4 has an opening at the upper end, when the filter cartridge 5 needs to be replaced, the old filter cartridge 5 is removed through the opening and a new filter cartridge 5 is replaced.

[0019] The centrifuge chamber 4 is equipped with an inlet pipe 6 at its upper end and a flange 7 on its side. The inlet pipe 6 is connected to the upper flange of the centrifuge chamber 4 through the flange 7. The inlet pipe 6 is inserted into the interior of the centrifuge chamber 4 through the opening and is rotatably connected to the filter cartridge 5. The drilling fluid in the inlet pipe 6 enters the filter cartridge 5. The manual drive mechanism 2 drives the filter cartridge 5 to rotate through the transmission shaft 3. The rotation of the filter cartridge 5 causes impurities to fall and remain in the filter cartridge 5 under the action of centrifugal force. The drilling fluid is thrown out into the centrifuge chamber 4 after the filter cartridge 5. The centrifuge chamber 4 is equipped with a drain valve 8 at its lower end for draining the drilling fluid in the centrifuge chamber 4. The drained drilling fluid is sent to the laboratory to test the various properties of the drilling fluid.

[0020] A support 9 is provided on the side of the inlet pipe 6. A funnel 10 is rotatably mounted on the upper end of the support 9. A hose 11 connected to the upper end of the inlet pipe 6 is provided on the lower end of the funnel 10. A filter screen 13 is provided inside the funnel 10. The sampled drilling fluid is placed into the funnel 10 and passes through the filter screen 13 under the action of gravity. Larger impurities are left on the filter screen 13. After the drilling fluid has flowed down evenly, the funnel 10 is rotated to a downward tilt position to pour out the impurities on the filter screen 13. The drilling fluid flowing down from the inlet pipe 6 enters the filter cartridge 5 for centrifugal filtration.

[0021] Example 2: A drilling fluid filtration device for sample analysis includes a base 1, a manual drive mechanism 2 at the upper end of the base 1, the manual drive mechanism 2 including a hand-cranked gear speed increaser (which is prior art and will not be described in detail here); the manual drive mechanism 2 includes a vertically extending drive shaft 3, a centrifuge chamber 4 at the upper end of the base 1, the drive shaft 3 extending from the lower end of the centrifuge chamber 4 into the centrifuge chamber 4, the drive shaft 3 and the centrifuge chamber 4 being rotatably and sealedly connected, a filter cartridge 5 with an open upper end being detachably provided at the upper end of the drive shaft 3, the filter cartridge 5 being disposed inside the centrifuge chamber 4, the centrifuge chamber 4 having an opening at the upper end, when the filter cartridge 5 needs to be replaced, the old filter cartridge 5 is removed through the opening and a new filter cartridge 5 is replaced, the centrifuge chamber 4 is made of transparent acrylic material, the transparent acrylic material facilitates observation of the state of the filter cartridge 5 inside, and facilitates timely replacement of the filter cartridge 5.

[0022] The centrifuge chamber 4 is equipped with an inlet pipe 6 at its upper end and a flange 7 on its side. The inlet pipe 6 is connected to the upper flange of the centrifuge chamber 4 through the flange 7. The inlet pipe 6 is inserted into the interior of the centrifuge chamber 4 through the opening. The inlet pipe 6 is rotatably connected to the filter cartridge 5, and the filter cartridge 5 is sleeved on the outside of the inlet pipe 6. The drilling fluid in the inlet pipe 6 enters the filter cartridge 5. The manual drive mechanism 2 drives the filter cartridge 5 to rotate through the transmission shaft 3. The rotation of the filter cartridge 5 causes impurities to fall and remain in the filter cartridge 5 under the action of centrifugal force. The drilling fluid is thrown out into the centrifuge chamber 4 after the filter cartridge 5. The centrifuge chamber 4 is equipped with a drain valve 8 at its lower end for draining the drilling fluid in the centrifuge chamber 4. The bottom of the interior of the centrifuge chamber 4 is conical. The conical bottom surface facilitates the outward collection of drilling fluid and facilitates its discharge from the drain valve 8. The discharged drilling fluid is sent to the laboratory to test various properties of the drilling fluid.

[0023] A support 9 is provided on the side of the inlet pipe 6. A funnel 10 is rotatably mounted on the upper end of the support 9. A hose 11 connected to the upper end of the inlet pipe 6 is provided on the lower end of the funnel 10. A filter screen 13 is provided inside the funnel 10. The sampled drilling fluid is placed into the funnel 10 and passes through the filter screen 13 under the action of gravity. Larger impurities are left on the filter screen 13. After the drilling fluid has flowed down evenly, the funnel 10 is rotated to a tilted downward position to pour out the impurities on the filter screen 13. The drilling fluid flowing down from the inlet pipe 6 enters the filter cartridge 5 for centrifugal filtration. A spring 12 is provided between the funnel 10 and the inlet pipe 6 and is sleeved on the outside of the hose 11. When pouring out the impurities on the filter screen 13, the impurities in the funnel 10 are manually tilted to the side. Then, the hand is released, and the funnel 10 automatically returns to a vertical position under the action of the spring 12.

[0024] The specific working process is as follows: The sampled drilling fluid is put into the funnel 10. Under the action of gravity, the drilling fluid passes through the filter screen 13, leaving larger impurities at the top of the filter screen 13. After the drilling fluid has flowed down from the funnel 10, the funnel 10 is manually tilted to pour out the impurities on the filter screen 13. Then, the hand is released, and the funnel 10 automatically returns to the vertical position under the action of the spring 12. After all the drilling fluid entering the inlet pipe 6 enters the filter cylinder 5, the filter cylinder 5 is rotated by the manual drive mechanism 2. Under the action of centrifugal force, the impurities are left in the filter cylinder 5. The drilling fluid enters the centrifuge chamber 4 after being filtered through the filter cylinder 5. The filtration effect is good, and the results are accurate in the subsequent testing process. After the centrifugal filtration is completed, the drain valve 8 is opened to drain the drilling fluid. The filter cylinder 5 is observed through the transparent centrifuge chamber 4. When it needs to be replaced, the inlet pipe 6 is removed, and the filter cylinder 5 is replaced from the opening. The process only requires manual operation and does not require power or external auxiliary equipment, making it highly adaptable.

[0025] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A drilling fluid filtration device for sample analysis, characterized in that: Includes a base (1), the base (1) is equipped with a manual drive mechanism (2), the manual drive mechanism (2) includes a vertically extending drive shaft (3), the upper end of the base (1) is equipped with a centrifuge chamber (4), the centrifuge chamber (4) is rotatably equipped with a filter cartridge (5) with an open upper end, the filter cartridge (5) is coaxially and detachably connected to the drive shaft (3), the upper end of the centrifuge chamber (4) is equipped with an inlet pipe (6), the inlet pipe (6) is detachably connected to the centrifuge chamber (4), the lower end of the inlet pipe (6) extends into the centrifuge chamber (4), the upper end of the filter cartridge (5) is rotatably connected to the inlet pipe (6), the lower end of the centrifuge chamber (4) is equipped with a drain valve (8), the side of the inlet pipe (6) is equipped with a bracket (9), the upper end of the bracket (9) is rotatably equipped with a funnel (10), the funnel (10) is equipped with a filter screen (13), and a hose (11) is provided between the funnel (10) and the inlet pipe (6).

2. The drilling fluid filtration device for sample analysis as described in claim 1, characterized in that: A spring (12) is provided between the funnel (10) and the inlet pipe (6) and is sleeved on the outside of the hose (11).

3. The drilling fluid filtration device for sample analysis as described in claim 1, characterized in that: The manual drive mechanism (2) includes a hand-cranked gear speed increaser.

4. The drilling fluid filtration device for sample analysis as described in claim 1, characterized in that: The filter cartridge (5) is sleeved on the outside of the liquid inlet pipe (6).

5. The drilling fluid filtration device for sample analysis as described in claim 1, characterized in that: The bottom of the centrifuge chamber (4) is conical.

6. The drilling fluid filtration device for sample analysis as described in claim 1, characterized in that: The centrifuge chamber (4) is made of transparent acrylic material.

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