Filtering device for drilling fluid

Abstract

The utility model discloses a filtering device for drilling fluid, which comprises a shell, a filtering barrel is inserted in the shell, a plurality of filtering holes are arranged on the outer wall of the filtering barrel, a liquid inlet pipe is embedded at the upper end of the filtering barrel, a collecting box is fixedly connected below the shell, the collecting box is communicated with the inside of the filtering barrel, and sealing cover plates are arranged on two sides of the collecting box. A motor is fixedly connected to the lower portion of the collecting box, a transmission rod is fixedly connected to the output end of the motor, spiral cleaning blades are fixedly connected to the periphery of the transmission rod and attached to the inner wall of the filter barrel, and a conical head is fixedly connected to the upper end of the transmission rod. By arranging the conical head, drilling fluid just conveyed into the filter barrel can be sputtered all around, the inner wall of the filter barrel is flushed through the just conveyed drilling fluid, impurities accumulated on filter holes are reduced, the filtered impurities can be effectively collected and stored in the collecting box in cooperation with the spiral cleaning blade, and blockage in the filter holes is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a filter device, especially to a filter device for drilling fluid. BACKGROUND

[0002] Drilling fluid is a general term for various circulating fluids that meet the needs of drilling work in the drilling process. Drilling fluid is the blood of drilling, also known as drilling flushing fluid.

[0003] The utility model discloses a kind of drilling fluid filter devices for western drilling, including box, the inside bottom wall of the box is symmetrically welded with two plate bodies, the upper surface of the plate body is welded with spring, the end of spring away from plate body is welded with filter screen, the upper surface of filter screen is symmetrically screwed with two vibration motors, the outer side wall of vibration motor is screwed with protective shell, the side of the box outer wall is equipped with first through slot;The utility model is driven by vibration motor to make filter screen vibrate, so that impurities in its mesh are shaken out, then the cleaning of filter screen is carried out by electric push rod and brush, so as to avoid the blockage of filter screen, and the problem that the subsequent filtration work is affected is avoided.

[0004] The above-mentioned drilling fluid filter device for western drilling has some problems when in use. First, the electric push rod is used to drive the brush to move back and forth, and it is difficult to remove all the accumulated impurities with a single movement of the brush. When the brush is reset, the residual impurities will be scraped to the first through slot and accumulated, which will affect the reset of the brush. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of filter device for drilling fluid, to solve the problem of the above background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of filter device for drilling fluid, including shell, the filter barrel is inserted in the shell, the filter barrel outer wall is equipped with a plurality of filter holes, the inlet pipe is embedded and installed on the filter barrel upper end, the collecting box is fixedly connected on the shell lower surface, the collecting box is communicated with the filter barrel interior, the sealing cover plate is arranged on the both sides of collecting box, the motor is fixedly connected on the collecting box lower surface, the transmission rod is fixedly connected on the motor output end, the spiral cleaning blade is fixedly connected on the transmission rod periphery, the spiral cleaning blade is attached to the filter barrel inner wall, the conical head is fixedly connected on the transmission rod upper end.

[0007] Preferably, the front surface of the shell is fixedly connected with a liquid discharge port, and the lower surface of the shell is fixedly connected with a fixed base.

[0008] Preferably, the shell upper end is provided with a plug-in hole, the plug-in hole is in sliding fit with the filter bucket, and a fixed threaded hole is formed around the plug-in hole on the upper surface of the shell.

[0009] Preferably, the filter bucket is fixedly connected with a fixed flange, the fixed flange is provided with a fixed bolt, the fixed bolt is in threaded fit with the fixed threaded hole, and a connecting flange is fixedly connected to the upper end of the liquid inlet pipe.

[0010] Preferably, the collecting box is provided with a through slot on two sides, a series of through holes are symmetrically formed in the collecting box, and a connecting through hole is symmetrically formed in the sealing cover plate.

[0011] Preferably, a connecting fixed stud is inserted into the series of through holes, the connecting fixed stud is in sliding fit with the connecting through hole, a limiting head is fixedly connected to one end of the connecting fixed stud, and a fixed nut is threadedly installed at the other end of the connecting fixed stud.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The tapered head can make the drilling fluid just delivered into the filter bucket splash around, the drilling fluid just delivered can be used to flush the inner wall of the filter bucket, the impurities accumulated on the filter holes can be reduced, the filtered impurities can be effectively collected and stored in the collecting box by the spiral cleaning blade, and the filter holes are prevented from being blocked.

[0014] 2. The filter bucket is fixed in the plug-in hole through the threaded fit of the fixed threaded hole and the fixed bolt, when the filter bucket needs to be replaced, the fixed bolt can be directly unscrewed, the fixing of the filter bucket is released, and the filter bucket can be conveniently pulled out and replaced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a sectional view of the utility model;

[0017] Figure 3 It is a local explosion view of the utility model;

[0018] Figure 4 It is a filter bucket half-section structure schematic view of the utility model.

[0019] In the figure: 1, shell; 101, drainage port; 102, fixed base; 103, plug hole; 104, fixed threaded hole; 2, collection box; 201, sealing cover plate; 202, series through hole; 203, connecting through hole; 204, connecting fixed stud; 205, limiting head; 206, fixed nut; 3, motor; 301, transmission rod; 302, spiral cleaning blade; 303, conical head; 4, filter barrel; 401, filter hole; 402, fixed flange; 403, liquid inlet pipe; 404, connecting flange. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of filtering device for drilling fluid, including shell 1, filter barrel 4 is inserted in shell 1, a plurality of filter holes 401 are set in filter barrel 4 outer wall, liquid inlet pipe 403 is embedded and installed on the upper end of filter barrel 4, collection box 2 is fixedly connected on the lower surface of shell 1, collection box 2 is communicated with filter barrel 4 inside, sealing cover plate 201 is arranged on the both sides of collection box 2, motor 3 is fixedly connected on the lower surface of collection box 2, transmission rod 301 is fixedly connected on the output end of motor 3, spiral cleaning blade 302 is fixedly connected around transmission rod 301, spiral cleaning blade 302 is attached to filter barrel 4 inner wall, conical head 303 is fixedly connected on the upper end of transmission rod 301.

[0022] In the embodiment, drilling fluid can be delivered to the inside of filter barrel 4 by liquid inlet pipe 403, conical head 303 is located at the lower end of liquid inlet pipe 403, drilling fluid discharged from the lower end of liquid inlet pipe 403 will contact with conical head 303, since conical head 303 is conical as a whole, it will guide drilling fluid to splash around, and then flush filter barrel 4 inner wall using just delivered drilling fluid, reduce impurities accumulated in the inside of filter barrel 4, filter hole 401 can filter drilling fluid, filter out impurities in drilling fluid and retain in the inside of filter barrel 4, since filter barrel 4 is in vertical state, then the particulate matter such as gravel in it will directly sink to the inside of collection box 2 for temporary collection and storage due to gravity, starting motor 3 can drive transmission rod 301 to rotate, transmission rod 301 rotation can drive spiral cleaning blade 302 to rotate, spiral cleaning blade 302 is attached to filter barrel 4 inner wall, then it can scrape off the remaining impurities attached to filter barrel 4 inner wall and deliver to the inside of collection box 2, effectively avoid the problem that filter hole 401 in filter barrel 4 is blocked and affects filtration.

[0023] Wherein, in order to realize the purpose of fixing the filter bucket 4 in the plug hole 103, the device uses the following technical solutions: the front of the shell 1 is fixed with a drain port 101, the lower surface of the shell 1 is fixed with a fixed base 102, the upper end of the shell 1 is provided with a plug hole 103, the plug hole 103 is in sliding fit with the filter bucket 4, the upper surface of the shell 1 and around the plug hole 103 is provided with a fixed threaded hole 104, the filter bucket 4 is fixed with a fixed flange 402, the fixed flange 402 is provided with a fixed bolt, and the fixed bolt is in threaded fit with the fixed threaded hole 104, and the upper end of the inlet pipe 403 is fixed with a connecting flange 404.

[0024] The drain port 101 can be connected with a drain pipe to discharge the filtered drilling fluid, the fixed base 102 is used for supporting the device, the fixed threaded hole 104 is in threaded fit with the fixed bolt, and the fixed flange 402 can be fixed on the upper surface of the shell 1 by rotating the fixed bolt into the fixed threaded hole 104 through the fixed flange 402, so as to fix the filter bucket 4 in the plug hole 103, and the connecting flange 404 is used for connecting with a conveying pipe.

[0025] Wherein, in order to realize the purpose of cleaning the impurities in the collection box 2, the device uses the following technical solutions: the collection box 2 is provided with a through slot on both sides, the collection box 2 is provided with a series of through holes 202 symmetrically, the sealing cover plate 201 is provided with a connecting through hole 203 symmetrically, the series of through holes 202 is inserted with a connecting fixed stud 204, the connecting fixed stud 204 is in sliding fit with the connecting through hole 203, one end of the connecting fixed stud 204 is fixed with a limiting head 205, and the other end of the connecting fixed stud 204 is provided with a fixed nut 206 in threaded fit.

[0026] The connecting fixed stud 204 passes through the series of through holes 202 and the connecting through hole 203, and the limiting head 205 abuts against the side surface of the sealing cover plate 201, then the fixed nut 206 is screwed, so as to fix the sealing cover plate 201 on both sides of the collection box 2, the sealing cover plate 201 is provided with a sealing element, so as to seal the through slot, avoid the drilling fluid flowing out of the through slot, and the sealing cover plate 201 can be removed by unscrewing the fixed nut 206, and the through slot can be used to clean the impurities accumulated in the collection box 2.

[0027] The working principle and use flow of the utility model: need to connect with the liquid inlet pipe 403 and the liquid outlet 101 respectively to supply and the liquid outlet pipeline when using, utilize the liquid inlet pipe 403 to deliver drilling fluid to the inside of filter bucket 4, then drilling fluid will enter the inside of shell 1 after filtering through filter hole 401, and is discharged through the liquid outlet 101, and the impurities will be detained in the inside of filter bucket 4, and the motor 3 is started to drive spiral cleaning blade 302 to rotate, and the impurities located in the inner wall of filter bucket 4 can be scraped off by the rotation of spiral cleaning blade 302, and stored in the inside of collection box 2, and the restriction of sealing cover plate 201 can be removed by unscrewing fixed nut 206 in the later period, and then the through slot is exposed, and at this time, the impurities accumulated in the inside of collection box 2 can be cleaned by using the through slot.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A filtration device for drilling fluids comprising a housing (1), characterised in that: The shell (1) is inserted into the filter bucket (4), the outer wall of the filter bucket (4) is provided with a plurality of filter holes (401), the upper end of the filter bucket (4) is embedded and installed with a liquid inlet pipe (403), the lower surface of the shell (1) is fixedly connected with a collecting box (2), the collecting box (2) is communicated with the inside of the filter bucket (4), the both sides of the collecting box (2) are provided with sealing cover plates (201), the lower surface of the collecting box (2) is fixedly connected with a motor (3), the output end of the motor (3) is fixedly connected with a transmission rod (301), the periphery of the transmission rod (301) is fixedly connected with spiral cleaning blades (302), the spiral cleaning blades (302) are attached to the inner wall of the filter bucket (4), and the upper end of the transmission rod (301) is fixedly connected with a conical head (303).

2. The filter apparatus for drilling fluids of claim 1, wherein: The front surface of the shell (1) is fixedly connected with a liquid outlet (101), and the lower surface of the shell (1) is fixedly connected with a fixed base (102).

3. The drilling fluid filtration device of claim 1, wherein: The upper end of the shell (1) is provided with an insertion hole (103), the insertion hole (103) is in sliding fit with the filter bucket (4), and the upper surface of the shell (1) and located around the insertion hole (103) is provided with a fixed threaded hole (104).

4. The drilling fluid filtration device of claim 3, wherein: The filter bucket (4) is fixedly connected with a fixed flange (402), the fixed flange (402) is provided with a fixed bolt, the fixed bolt is in threaded fit with the fixed threaded hole (104), and the upper end of the liquid inlet pipe (403) is fixedly connected with a connecting flange (404).

5. The drilling fluid filtration device of claim 1, wherein: The both sides of the collecting box (2) are provided with a through groove, the inside of the collecting box (2) is symmetrically provided with a series of through holes (202), and the inside of the sealing cover plate (201) is symmetrically provided with a connecting through hole (203).

6. A filter apparatus for drilling fluids as defined in claim 5, wherein: The connecting fixed stud (204) is inserted into the series of through holes (202), the connecting fixed stud (204) is in sliding fit with the connecting through hole (203), one end of the connecting fixed stud (204) is fixedly connected with a limiting head (205), and the other end of the connecting fixed stud (204) is threadedly installed with a fixed nut (206).

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