CN211528004U

CN211528004U - Medium-pressure water loss instrument

Info

Publication number: CN211528004U
Application number: CN202020059117.8U
Authority: CN
Inventors: 党肖娇; 代刚; 王家珺; 路雅丽
Original assignee: Beijing Huitianfeng Petroleum Machinery Co ltd
Current assignee: Beijing Huitianfeng Petroleum Machinery Co ltd
Priority date: 2020-01-11
Filing date: 2020-01-11
Publication date: 2020-09-18
Anticipated expiration: 2030-01-11

Abstract

The utility model relates to a medium-pressure dehydration instrument, which comprises a base, wherein a supporting column is vertically arranged above the base, a pressure reducing valve is fixedly connected to the supporting column, one end of the pressure reducing valve is an air inlet, the other end of the pressure reducing valve is an air outlet, and one end of the air inlet is provided with an inflating pipe; a filter cup is arranged at one end of the air outlet, the filter cup comprises a filter cartridge with one end provided with an opening, and a connecting component for communicating the filter cartridge and the air outlet of the pressure reducing valve is also arranged on the bottom wall of the filter cartridge; the port department lid of cartridge filter is equipped with one and filters the lid, filters and covers the inner peripheral surface and be provided with the filter screen, is provided with filter paper on the filter screen, and the one side that filters the lid and deviate from the cartridge filter is provided with a sealed lid, and the center of sealed lid is seted up the filtration pore that the drilling fluid after filtering flowed out, and sealed covering still is provided with and is used for sealed lid, filters the fixed subassembly of lid and cartridge filter reciprocal anchorage. The utility model discloses have the effect that makes things convenient for the staff to pick up filter paper and filter cake on the filter paper.

Description

Medium-pressure water loss instrument

Technical Field

The utility model belongs to the technical field of the technique of desiccator and specifically relates to a middling pressure desiccator is related to.

Background

The drilling fluid filtration loss is an important index of the drilling fluid, and when the internal components of the drilling fluid are tested, liquid and fixation need to be measured respectively, so the drilling fluid needs to be filtered before measurement. The medium pressure water loss instrument is often used for filtering the drilling fluid during filtering.

As shown in fig. 6, the conventional medium pressure water loss instrument includes a horizontally disposed bottom plate 9, and a support 91 vertically disposed on the bottom plate 9, wherein a pressure reducing valve 3 is fixedly connected to the support 91, an air inlet 31 and an air outlet 32 are respectively disposed at two ends of the pressure reducing valve 3, the air inlet 31 of the pressure reducing valve 3 is communicated with a high pressure air source, and the air outlet 32 is communicated with a mud cup 92 for loading drilling fluid. The slurry cup 92 comprises a cup body 921 and a cover body 922, the opening of the cup body 921 is arranged upward and the cover body 922 is connected by screw thread; the cap body 922 communicates with the air outlet 32. A through hole for containing the drilling fluid to flow out is formed in the bottom wall of the cup body 31, a filter screen 621 is fixedly connected to the inner circumferential surface of the cup body 921, and a piece of filter paper 8 is arranged on the filter screen 621 facing the cover body 922. When the high-pressure air source at the air inlet 31 of the pressure reducing valve 3 flows into the mud cup 92 under the control of the pressure reducing valve 3, the liquid in the mud cup 92 is pressed by the high-pressure air and then flows out of the through holes on the surface of the cup body 921 through the filter paper 8 and the filter screen. The bottom plate 9 is also provided with a measuring cylinder 7 for collecting the filtrate.

However, after the drilling fluid is filtered, the filter paper 8 is attached to the surface of the filter net 621 due to the pressure of the high pressure gas and the surface tension of the fluid during the filtering, so that it is inconvenient to take out the filter paper 8 and the filter cake on the filter paper 8.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a middling pressure desiccator, it has the effect that makes things convenient for the staff to pick up filter paper and filter paper filter cake to exist not enough to prior art.

The above utility model discloses an above-mentioned utility model's purpose can be realized through following technical scheme:

a medium-pressure water loss instrument comprises a horizontally arranged base, wherein a support column is vertically arranged above the base, one end, far away from the base, of the support column is fixedly connected with a pressure reducing valve, one end of the pressure reducing valve is an air inlet, the other end of the pressure reducing valve is an air outlet, and one end of the pressure reducing valve is provided with an inflating pipe used for supplying air to the pressure reducing valve; a filter cup for containing and filtering the drilling fluid is arranged at one end of the air outlet of the pressure reducing valve, the filter cup comprises a filter cartridge with one end provided with an opening, and a connecting assembly for communicating the filter cartridge and the air outlet of the pressure reducing valve is further arranged on the bottom wall of the filter cartridge; the port department lid of cartridge filter is equipped with one and filters the lid, filters the lid and be the ring shape and filter the lid inner peripheral surface and be provided with the filter screen, is provided with filter paper on the filter screen, and the one side that filters the lid and deviate from the cartridge filter is provided with a sealed lid, and the center of sealed lid is offered and is used for holding the filtration pore that the drilling fluid after filtering flowed out, still is provided with on the sealed lid to be used for sealing the lid, filters the fixed subassembly of lid and cartridge filter.

Through adopting above-mentioned technical scheme, after the staff uses the filter bowl to take up the drilling fluid, can cover the tip of establishing at the cartridge filter in proper order with the sealed lid of filter cap and use fixed subassembly to seal the lid and filter cap and cartridge filter reciprocal anchorage, then use coupling assembling to fix the cartridge filter in the gas outlet department of relief pressure valve, thereby transmit the atmospheric pressure-actuated drilling fluid to the cartridge filter inside through the relief pressure valve gas outlet, the drilling fluid passes through filter paper and flows from straining the hole, thereby the mutual separation to drilling fluid solid phase and liquid phase has been accomplished. Thereby filter paper pastes inconvenient taking off on the surface of filter screen after the completion of filtering, and the staff can pull down the filter lid and use air current or rivers to wash filter paper from filter screen one side this moment, and then make that filter paper can be more convenient break away from the filter screen.

The present invention may be further configured in a preferred embodiment as: the fixed subassembly includes the cardboard of rigid coupling at the cartridge filter outer peripheral face, sets up the mounting that deviates from the cartridge filter one side at sealed lid, and the cross-section of mounting is the U type and the mounting opening sets up towards sealed lid. The tip rigid coupling that the diapire was kept away from to the inside wall of mounting has one and the fixture block of cardboard screens of mutually supporting, and the central point of mounting diapire puts and wears to be equipped with one and is used for the top to touch the connecting pipe of sealed lid, the outer peripheral face and the mounting threaded connection of connecting pipe to the connecting pipe with strain the coaxial setting of hole, set up the groove of stepping down that holds the fixture block roll-off on the cardboard.

Through adopting above-mentioned technical scheme, through the screw-thread fit between connecting pipe and the mounting, when revolving the connecting pipe soon and making the mounting move along the direction of keeping away from sealed lid, fixture block and the mutual screens of cardboard on the mounting, thereby the connecting pipe extrusion seals up the lid, and make the inseparable lid of sealed lid establish the port of crossing the filter lid, thereby seal the cartridge filter, the setting of fixed subassembly has made things convenient for the staff to cover and has established the cartridge filter and pass through the screw-thread fit between connecting pipe and the mounting, when revolving the sealed lid of connecting pipe control and crossing the filter lid and break away from each other, thereby because seal between lid and the filter lid for slowly separating make the interior high-pressure gas of filter cup slowly leak, the condition that causes the lid to explode suddenly when dismantling because of having high-pressure gas in the filter cup takes place, thereby the stability.

The present invention may be further configured in a preferred embodiment as: and a butterfly knob convenient for workers to screw is fixedly connected to the connecting pipe.

Through adopting above-mentioned technical scheme, the setting of butterfly knob for the staff can directly revolve the wrong connecting pipe of twisting with the hand, thereby has improved the convenience of staff's operation.

The present invention may be further configured in a preferred embodiment as: one surface of the sealing cover, which is far away from the filter cartridge, is fixedly connected with a counterpoint ring, the counterpoint ring and the filter hole are coaxially arranged, the axial section of the counterpoint ring is triangular, and the bevel edge of the triangle is far away from the filter hole; the end part of the corresponding connecting pipe is provided with a contraposition groove matched with the contraposition ring.

Through adopting above-mentioned technical scheme, when connecting pipe and mounting pass through the screw and revolve to twist and then extrude sealed lid, counterpoint ring card goes into to counterpoint inslot to thereby make connecting pipe and the coaxial counterpoint of filtration pore through the guide effect of counterpoint ring and counterpoint groove contact surface. The setting of counterpoint ring and counterpoint groove has improved the staff and has adjusted the connecting pipe and has filtered out the convenience of hole position to the stability of connecting pipe when using has been improved.

The present invention may be further configured in a preferred embodiment as: one end of the filter cover facing the seal cover is provided with a seal groove for accommodating the seal plate, and a first seal gasket is arranged on the bottom wall of the seal groove.

Through adopting above-mentioned technical scheme, through the screw-thread fit between connecting pipe and the mounting for inside sealed lid card was gone into the seal groove, strengthened the tightness that sealed lid closed, and sealed lid extrudees first sealed pad simultaneously with the diapire of seal groove, make first sealed pad take place elastic deformation and then fill between seal groove and seal groove, thereby further improved the tightness that sealed lid established.

The present invention may be further configured in a preferred embodiment as: the connecting assembly comprises a ninety-degree elbow fixedly connected to the air outlet, one end of the elbow, far away from the air outlet, faces the bottom plate, one end of the elbow, far away from the pressure reducing valve, is in threaded connection with a connector, one end of the connector, far away from the elbow, is in closed arrangement, and the end face of the connector, far away from the elbow, is provided with a matching hole communicated with the interior of the connector; a sealing block is fixedly connected to the outer bottom wall of the filter cartridge, and a vent hole communicated with the inside of the filter cartridge is formed in the sealing block; when the sealing block passes through the matching hole and is inserted into the interior of the connector and the filter cartridge is transversely rotated, the sealing block and the connector are mutually clamped and fixed.

Through adopting above-mentioned technical scheme, inside sealed piece can follow the mating holes and insert into the connector, then the staff can be with the ninety degrees of cartridge filter lateral rotation, thereby sealed piece and the mutual screens of mating holes will filter cup and connector reciprocal anchorage, sealed piece and the mating holes mutually support make filter cup can with connector reciprocal anchorage, thereby improved filter cup and relief pressure valve interconnect's convenience.

The present invention may be further configured in a preferred embodiment as: and a second sealing gasket is arranged between the end face of the sealing block and the end part of the elbow.

Through adopting above-mentioned technical scheme, when sealed piece be located inside the connector and with the mutual screens of terminal surface of connector, thereby sealed piece extrusion first sealed pad makes the sealed pad of second take place deformation, and then carries out the shutoff between sealed piece and the elbow to having improved the leakproofness of being connected between filter cup and the relief pressure valve, having reduced the condition emergence of filter cup and relief pressure valve gas leakage, thereby having improved the stability that the appearance of drying of water used.

The present invention may be further configured in a preferred embodiment as: one side of the filter paper, which is far away from the filter screen, is provided with a magnetic ring, and the magnetic ring and the filter cover are mutually attracted so as to fix the filter paper on the filter screen.

Through adopting above-mentioned technical scheme, thereby the magnetism ring can adsorb the terminal surface of filtering the lid through magnetic force and fix the filter paper centre gripping. The magnetic ring improves the stability of the filter paper fixed on the surface of the filter cover.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the convenience of taking out the filter paper from the filter screen by workers is improved. After the filtering is finished, the worker can wash the filter paper from the side of the filter screen, which is far away from the filter paper, by using air flow or deionized water, so that the filter paper and the filter screen are separated from each other;

2. the convenience of filter cup and relief pressure valve interconnect has been improved, makes the filter cup fix on the connector through simple horizontal rotation through coupling assembling's setting to the convenience of filter cup operation has been improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a medium pressure water loss instrument;

FIG. 2 is a schematic structural view showing the connection relationship between the supporting column and the base;

FIG. 3 is a schematic view of a coupling nut;

FIG. 4 is a schematic view showing the structure of the filter cup;

FIG. 5 is a schematic structural view showing a connecting assembly;

fig. 6 is a schematic structural diagram of a water loss apparatus in the background art.

In the figure, 1, a base; 11. fixing grooves; 12. positioning a groove; 2. a support pillar; 21. a sleeve; 22. inserting a rod; 23. a connecting rod; 24. fixing a nut; 25. a top contact screw; 26. pushing the knob; 3. a pressure reducing valve; 31. an air inlet; 32. an air outlet; 4. an air cylinder; 41. a gas supply pipe; 42. an air tap; 43. a hose; 44. a connecting nut; 441. inserting a tube; 442. a limiting sheet; 443. a screwing member; 45. a rubber pad; 5. inflating a gas pipe; 6. a filter cup; 61. a filter cartridge; 62. a filter cover; 621. a filter screen; 622. a sealing groove; 63. a sealing cover; 631. a first gasket; 632. a filter-out aperture; 64. a fixing assembly; 641. clamping a plate; 642. a fixing member; 643. a clamping block; 644. a yielding groove; 645. a connecting pipe; 646. a registration ring; 647. a positioning groove; 648. a butterfly knob; 65. a connecting assembly; 651. a one-way valve; 652. a sealing block; 654. bending the pipe; 655. a connector; 656. a mating hole; 657. a second gasket; 7. a measuring cylinder; 8. filtering paper; 81. a magnetic ring; 9. a base plate; 91. a support; 92. a mud cup; 921. a cup body; 922. a cover body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the medium pressure dehydration instrument disclosed by the present invention comprises a horizontally disposed base 1, a support column 2 is vertically disposed on the base 1, a pressure reducing valve 3 is fixedly connected to the support column 2, an air inlet 31 and an air outlet 32 are respectively disposed at two ends of the pressure reducing valve 3, the air inlet 31 is connected to an air reservoir 4, and the air reservoir 4 is further connected to an inflating tube 5 for supplying air to the air reservoir 4; the outlet 32 is communicated with a filter cup 6 for loading and filtering the drilling fluid. The base 1 is also provided with a measuring cylinder 7 for receiving filtrate from the filter cup 6.

When the medium-pressure water loss instrument is used, a worker can load drilling fluid into the filter cup 6 and sequentially connect the filter cup 6 and the air storage cylinder 4 to two ends of the pressure reducing valve 3. Then the staff interconnects the inflation pipe 5 and the air cylinder 4, and pressurizes the air cylinder 4 through the inflation pipe 5. And then adjusting the pressure reducing valve 3 to ensure that the air pressure of an air outlet 32 of the pressure reducing valve 3 and the inside of the filter cup is 0.69MPa, pressing the drilling fluid by the air in the filter cup 6, arranging filter paper 8 at the bottom of the filter cup 6, and enabling the liquid to flow out of the filter cup 6 after being filtered by the filter paper 8 and to be collected in the measuring cylinder 7.

As shown in fig. 1 and 2, the supporting column 2 includes a sleeve 21 and an insertion rod 22 slidably connected to each other, the insertion rod 22 is inserted into the sleeve 21, and a connection rod 23 is further coaxially and fixedly connected to one end of the insertion rod 22 facing the base 1, the diameter of the connection rod 23 is smaller than that of the insertion rod 22, an external thread is formed on the outer peripheral surface of the connection rod 23, and the connection rod 23 penetrates through the base 1 and is screwed with a fixing nut 24 at one end of the base 1 facing away from the insertion rod 22. The end of the fixing nut 24 and the end of the insert rod 22 are simultaneously clamped on both sides of the base 1 by screwing the threads of the fixing nut 24, thereby fixing the insert rod 22 on the base 1. A top contact screw 25 is arranged on the sleeve 21 in a penetrating way, the top contact screw 25 is in threaded fit with the sleeve 21, and the end part of the top contact screw 25 penetrates into the sleeve 21. When the sleeve 21 is sleeved on the inserted rod 22 and slides along the length direction of the inserted rod 22, a worker can control the screwing of the abutting screw 25 to further enable the end part of the abutting screw 25 to abut against and press the surface of the inserted rod 22, so that the whole length between the inserted rod 22 and the sleeve 21 is fixed.

When the water loss instrument works, the supporting column 2 is fixed on the surface of the base 1 through the mutual matching between the connecting rod 23 and the fixing nut 24, and the supporting column 2 is perpendicular to the plane of the base 1. When losing water the appearance when not using, vertical support column 2 of establishing immediately and the relative occupation space of rigid coupling at the relief pressure valve 3 on support column 2 surface, the staff can unscrew fixation nut 24 from connecting rod 23 this moment, then dismantles support column 2 from base 1 get off to reduced the space of losing water the appearance and occupy, made things convenient for taking in of losing water the appearance. The sleeve 21 and the inserted rod 22 are arranged in a sliding manner, so that the overall height of the supporting column 2 can be adjusted, and the space occupation of the water loss instrument is further reduced; and the staff can be through twisting the top and touch screw 25 to make the tip top of top and touch screw 25 touch on the outer peripheral face of inserted bar 22, thereby through the friction between top and touch screw 25 and the outer peripheral face of inserted bar 22, thereby with inserted bar 22 and sleeve pipe 21 reciprocal anchorage, improved the whole length adjustment of support column 2 and fixed stability. In order to facilitate the worker to screw the top contact screw 25, the head of the top contact screw 25 is further fixedly connected with a top contact knob 26, the worker can directly screw the top contact knob 26 by hand to control the rotation of the top contact screw 25, and the convenience of the worker in adjusting the length of the support column 2 is improved.

As shown in fig. 1 and 3, the air cylinder 4 is a hollow and sealed tank, an air supply pipe 41 (shown in fig. 2) and an air nozzle 42 (shown in fig. 2) are provided on the upper surface of the air cylinder 4, and the air supply pipe 41 and the air nozzle 42 are communicated with the inside of the air cylinder 4. The air supply pipe 41 is sleeved with a hose 43, and the hose 43 contracts on the outer circumferential surface of the air supply pipe 41 through the elasticity of the hose 43 so as to be fixed with the air supply pipe 41; the other end of the hose 43 is provided with a coupling nut 44. The coupling nut 44 is threadedly coupled to the inlet port 31 of the pressure reducing valve 3. The connection nut 44 includes an insertion tube 441 fixed to the end of the flexible tube 43, a position-limiting piece 442 is coaxially fixed to the end of the insertion tube 441 away from the flexible tube 43, a screwing piece 443 is disposed on the insertion tube 441, the screwing piece 443 is tubular, an end of the screwing piece 443 facing away from the flexible tube 43 is open, another end of the screwing piece 443 is closed, the insertion tube 441 passes through the screwing piece 443, and the position-limiting piece 442 abuts against the closed end of the screwing piece 443 for limiting, so that the screwing piece 443 is fixed to the circumferential surface of the insertion tube 441 and is rotatably connected to the insertion tube 441. The inner circumferential surface of the screw 443 is provided with an internal thread, and the outer circumferential surface corresponding to the air inlet 31 of the pressure reducing valve 3 is provided with an external thread which is matched with the screw 443. The hose 43 and the pressure reducing valve 3 are fixed to communicate with each other by screwing the screw 443 to the outer peripheral surface of the inlet 31 of the pressure reducing valve 3. The limiting sheet 442 is further provided with a rubber pad 45 at one end away from the hose 43, when the screwing piece 443 and the pressure reducing valve 3 are screwed together, the end of the air inlet 31 of the pressure reducing valve 3 is pressed against the surface of the rubber pad 45, the rubber pad 45 is squeezed to enable the rubber pad 45 to be elastically deformed, and a gap between the pressure reducing valve 3 and the limiting sheet 442 is filled up, so that the sealing performance of the interconnection between the hose 43 and the pressure reducing valve 3 is improved. The air tap 42 is provided with a check valve therein, and air can only enter the air cylinder 4 from the outside and is restricted in the air cylinder 4 by the check valve, thereby providing a required pressure to the pressure reducing valve 3.

When the worker uses the air cylinder 4, the air outlet end of the inflating tube 5 is connected to the air tap 42 of the air cylinder 4, and the hose 43 connected to the air cylinder 4 is screwed with the outer peripheral surface of the air inlet 31 of the pressure reducing valve 3 through the connecting nut 44 and is communicated with the pressure reducing valve 3. At the moment, the staff uses the inflation pipe 5 to pressurize the interior of the air storage cylinder 4, and then the staff adjusts the pressure reducing valve 3, so that the air pressure in the air outlet 32 of the pressure reducing valve 3 and the filter cup 6 is the required air pressure. At this time, the operator can detach the inflation tube 5 from the air tap 42, and the air tap 42 limits the air flowing out of the air cylinder 4, so that the air cylinder 4 can still keep high-pressure air. The inflation pipe 5 and the air reservoir 4 are detachably arranged, so that the capacity of air at the air inlet 31 of the pressure reducing valve 3 is increased. When the liquid in the filter cup 6 is gradually discharged, the air pressure in the filter cup 6 is changed to a certain extent, and because a large amount of high-pressure gas is stored in the air storage cylinder 4, the gas can be supplemented into the filter cup 6 through the pressure reducing valve 3, so that the air pressure in the filter cup 6 tends to be stable, and the filtering stability of the filter cup 6 is improved; on the other hand, use when the staff and inflate rear can be with inflating pipe 5 and gas receiver 4 alternate segregation with inflating pipe 5 to gas can use inflating pipe 5 to inflate other desiccation appearance, make one inflating pipe 5 can carry out the air feed to a plurality of desiccation appearance, thereby improved the convenience that inflates pipe 5 used.

As shown in fig. 2, a fixing groove 11 for accommodating the air cylinder 4 is formed in the base 1, the air cylinder 4 can be inserted into the fixing groove 11, an internal thread is formed on an inner circumferential surface of the fixing groove 11, and an external thread matched with the fixing groove 11 is formed on an outer circumferential surface of the air cylinder 4. Thereby fix gas receiver 4 on base 1 through the screw-thread fit of gas receiver 4 and fixed slot 11, improved the wholeness of desiccator, and then improved the stability of gas receiver 4 work. A positioning groove 12 is further formed on the base 1 right below the connection pipe 645, the positioning groove 12 is coaxially arranged with the connection pipe 645, the measuring cylinder 7 is placed in the positioning groove 12, and the filtrate in the filter cup 6 can be collected in the measuring cylinder 7. The setting of constant head tank 12 has improved and has made that the staff can be accurate place graduated flask 7 under filter cup 6 to the filtrate that drops in from filter cup 6 can be by accurate collection in graduated flask 7, has improved the convenience that the staff used the appearance of losing water.

As shown in fig. 4, the filter cup 6 includes a filter cylinder 61 with an opening at one end, a vent is formed in the bottom wall of the filter cylinder 61, a connecting assembly 65 for connecting the filter cup 6 and the pressure reducing valve 3 is disposed at the vent on the outer side of the filter cylinder 61, a filter cover 62 is further covered at the port of the filter cylinder 61, the filter cover 62 is circular, and the filter cover 62 abuts against the end of the filter cylinder 61; the inner peripheral surface of the filter cover 62 is fixedly connected with a filter screen 621, the filter paper 8 is arranged on one surface of the filter screen 621 facing the bottom wall of the filter cartridge 61, a magnetic ring 81 is arranged on one surface of the filter paper 8 departing from the filter screen 621, and the magnetic ring 81 can be adsorbed on the end surface of the filter cover 62 through magnetic force so as to clamp and fix the filter paper 8. The magnetic ring 81 improves the stability of the filter paper 8 fixed on the surface of the filter cover 62. One side of the filter cover 62 departing from the filter cartridge 61 is provided with a seal groove 622, a seal cover 63 is arranged in the seal groove 622, a filter hole 632 is arranged at the center of the seal cover 63, and a first seal gasket 631 is further arranged between the seal cover 63 and the bottom wall of the seal groove 622. The side of the sealing cover 63 facing away from the filter cartridge 61 is provided with a fixing assembly 64 for covering the sealing cover 63 at the opening of the filter cartridge 61. The fixing assembly 64 includes a clamping plate 641 coaxially and fixedly connected to the outer peripheral surface of the filter cartridge 61, and a fixing member 642 disposed on a side of the sealing cover 63 away from the filter cartridge 61, wherein the fixing member 642 has a U-shaped cross section, two side walls of the fixing member 642 are respectively and fixedly connected with a locking block 643 mutually locked with the clamping plate 641, and the clamping plate 641 is correspondingly provided with two avoiding grooves 644 for accommodating the locking block 641 to slide out. A connecting pipe 645 is penetrated through the center of the bottom wall of the fixing member 642, the connecting pipe 645 is screw-engaged with the fixing member 642, the end of the connecting pipe 645 can be pressed against the surface of the sealing cover 63, and the sealing cover 63 is pressed by screwing the connecting pipe 645 and the fixing member 642, so that the sealing cover 63 is tightly attached to the filter cover 62 to cover the filter cartridge 61. The butterfly knob 648 is fixedly connected to the outer circumferential surface of the connection tube 645, and the butterfly knob 648 can be screwed on the connection tube 645 by a worker by hand, so that the worker can operate the connection tube 645 conveniently.

Through the screw-thread fit between connecting pipe 645 and mounting 642 for inside sealed lid 63 card gone into the seal groove 622, strengthened the sealed tightness that covers of lid 63, and sealed lid 63 extrudees first sealed pad 631 with the diapire of seal groove 622 simultaneously, thereby makes first sealed pad 631 take place elastic deformation and then fill between seal groove 622 and seal groove 622, has further improved the sealed tightness that lid 63 covered and establish. In order to improve the accuracy of the mutual alignment between the connection pipe 645 and the filter hole 632, one surface of the sealing cover 63 facing the connection pipe 645 is further fixedly connected with an alignment ring 646, the alignment ring 646 and the filter hole 632 are coaxially arranged, the axial section of the alignment ring 646 is triangular, the inclined edge of the triangle is far away from the filter hole 632, an alignment groove 647 matched with the alignment ring 646 is formed in the end surface of the corresponding connection pipe 645 facing the sealing cover 63, when the connection pipe 645 and the fixing member 642 are screwed to extrude the sealing cover 63, the alignment ring 646 is clamped into the alignment groove 647, and the connection pipe 645 and the filter hole 632 are coaxially aligned through the guiding function of the contact surface of the alignment ring 646 and the alignment groove 647. The arrangement of the alignment ring 646 and the alignment groove 647 improves the convenience of workers in adjusting the positions of the connection pipe 645 and the filter holes 632, and improves the stability of the connection pipe 645 in use. After the filtration is completed, the filter paper 8 is tightly attached to the surface of the filter screen 621 due to the pressure of the high-pressure gas and the surface tension of the liquid, and when the filter paper is inconvenient to take down, a worker can wash the filter paper 8 from one side of the filter screen 621 by using air flow or water flow, so that the filter paper 8 can be separated from the filter screen 621 more conveniently.

As shown in fig. 5, the connecting assembly 65 includes a one-way valve 651 fixed to the outer bottom wall of the filter cartridge 61, the one-way valve 651 is located at the vent and is communicated with the vent, a sealing block 652 is fixed to the other end of the one-way valve 651, the sealing block 652 is provided with vent holes for simultaneously penetrating through two ends of the sealing block 652, and the vent holes are communicated with the one-way valve 651. The gas located outside the filter cartridge 61 can be introduced into the one-way valve 651 from the sealing block 652 and flow into the interior of the filter cartridge 61 from the gas permeable hole, and the gas or liquid located inside the filter cartridge 61 is blocked by the one-way valve 651 so as to be confined to the interior of the filter cartridge 61. The connection assembly 65 further comprises a ninety degree elbow 654 interconnecting the pressure reducing valve 3, the end of the elbow 654 remote from the pressure reducing valve 3 being disposed towards the base 1, the elbow 654 further having a connector 655 threadedly attached thereto, the connector 655 being tubular and the end of the connector 655 remote from the elbow 654 being disposed in a closed configuration. The end surface of the connecting head 655 away from the elbow 654 is provided with a matching hole 656. The sealing block 652 can be inserted into the connecting head 655 from the matching hole 656, then a worker can rotate the filter cartridge 61 transversely by ninety degrees, the sealing block 652 and the matching hole 656 are clamped with each other to fix the filter cup 6 and the connecting head 655 to each other, the end face of the sealing block 652, which is far away from the filter cup 6, is further provided with a second sealing gasket 657, the second sealing gasket 657 is located between the end of the elbow 654 and the sealing block 652, when the sealing block 652 is located inside the connecting head 655 and is clamped with the end face of the connecting head 655, the sealing block 652 presses the first sealing gasket 631 to deform the second sealing gasket 657, and further, the sealing block 652 and the elbow 654 are sealed, so that the connection sealing performance between the filter screen and the pressure reducing valve 3 is improved, the occurrence of air leakage between the filter cup 6 and the pressure reducing valve 3 is reduced, and the use stability of the water loss. The interfitting of the seal block 652 and the mating hole 656 allows the filter cup 6 to be secured to the connector 655, thereby improving the ease of interconnection of the filter cup 6 to the pressure relief valve 3.

The implementation principle of the embodiment is as follows: when the staff uses the medium pressure dehydration appearance, at first with support column 2 vertical installation on base 1 and twist set nut 24 to with support column 2 and base 1 reciprocal anchorage, then the staff can adjust the whole length of support column 2, and twist the top and touch knob 26 and make the tip of top touch screw 25 top touch at the terminal surface of inserted bar 22, thereby with inserted bar 22 and sleeve pipe 21 reciprocal anchorage. The operator can now screw the air reservoir 4 onto the base 1 and connect the hose 43 to the air inlet 31 of the pressure reducing valve 3. Then the worker places the filter paper 8 on the filter screen 621 and fixes it by the magnetic ring 81, and then the worker can load the drilling fluid into the filter cartridge 61 and cover the filter cover 62 and the sealing cover 63 on the end of the filter cartridge 61 in turn, and then fix the sealing cover 63 with the filter cartridge 61 using the fixing assembly 64. Finally, the worker installs the filter cup 6 at the air outlet 32 of the pressure reducing valve 3 and uses the inflation pipe 5 to inflate the air storage cylinder 4, and the drilling fluid in the filter cup 6 flows out of the connecting pipe 645 and is collected in the measuring cylinder 7.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A medium pressure water loss instrument comprises a base (1) which is horizontally arranged, a supporting column (2) is vertically arranged above the base (1), a pressure reducing valve (3) is fixedly connected to one end, far away from the base (1), of the supporting column (2), an air inlet (31) is formed in one end of the pressure reducing valve (3), an air outlet (32) is formed in the other end of the pressure reducing valve (3), and an inflating pipe (5) used for supplying air to the pressure reducing valve (3) is arranged at one end of the air inlet (31) of the pressure reducing valve (3); one end of the air outlet (32) of the pressure reducing valve (3) is provided with a filter cup (6) which is used for containing drilling fluid and filtering the drilling fluid, and the filter cup is characterized in that: the filter cup (6) comprises a filter cylinder (61) with one end provided with an opening, and the bottom wall of the filter cylinder (61) is also provided with a connecting component (65) for communicating the filter cylinder (61) with the air outlet (32) of the pressure reducing valve (3); the port department lid of cartridge filter (61) is equipped with one and filters lid (62), it is ring shape and filters lid (62) inner peripheral surface and is provided with filter screen (621) to filter lid (62), be provided with filter paper (8) on filter screen (621), the one side that filters lid (62) deviates from cartridge filter (61) is provided with one and seals lid (63), filter hole (632) that are used for holding the drilling fluid after filtering outflow are seted up to the center of sealing lid (63), still be provided with on sealed lid (63) and be used for sealing lid (63), filter lid (62) and cartridge filter (61) fixed subassembly (64) of mutual fixation.

2. The medium pressure water loss instrument according to claim 1, wherein: the fixing assembly (64) comprises a clamping plate (641) fixedly connected to the outer peripheral surface of the filter cartridge (61), and a fixing piece (642) arranged on one surface, deviating from the filter cartridge (61), of the sealing cover (63), the cross section of the fixing piece (642) is U-shaped, the opening of the fixing piece (642) faces the sealing cover (63), a clamping block (643) mutually matched with the clamping plate (641) for clamping is fixedly connected to the end portion, far away from the bottom wall, of the inner side wall of the fixing piece (642), a connecting pipe (645) used for pushing against the sealing cover (63) penetrates through the center position of the bottom wall of the fixing piece (642), the outer peripheral surface of the connecting pipe (645) is in threaded connection with the fixing piece (642), the connecting pipe (645) and the filter hole (632) are coaxially arranged, and an abdicating groove (.

3. The medium pressure water loss instrument according to claim 2, wherein: and a butterfly knob (648) convenient for workers to screw is fixedly connected to the connecting pipe (645).

4. The medium pressure water loss instrument according to claim 2, wherein: one surface of the sealing cover (63) departing from the filter cartridge (61) is fixedly connected with a contraposition ring (646), the contraposition ring (646) and the filter hole (632) are coaxially arranged, the axial section of the contraposition ring (646) is triangular, and the bevel edge of the triangle is far away from the filter hole (632); the end part corresponding to the connecting pipe (645) is provided with an aligning groove (647) which is matched with the aligning ring (646).

5. The medium pressure water loss instrument according to claim 2, wherein: one end of the filter cover (62) facing the seal cover (63) is provided with a seal groove (622) for accommodating the seal plate, and the bottom wall of the seal groove (622) is provided with a first seal gasket (631).

6. The medium pressure water loss instrument according to claim 1, wherein: the connecting assembly (65) comprises a ninety-degree elbow (654) arranged at the air outlet (32), one end of the elbow (654) far away from the air outlet (32) is arranged towards the bottom plate (9), one end of the elbow (654) far away from the pressure reducing valve (3) is in threaded connection with a connecting head (655), one end of the connecting head (655) far away from the elbow (654) is in closed arrangement, and the end surface of one end of the connecting head (655) far away from the elbow (654) is provided with a matching hole (656) communicated with the interior of the connecting head (655); a sealing block (652) is fixedly connected to the outer bottom wall of the filter cartridge (61), and the sealing block (652) is provided with vent holes communicated with the interior of the filter cartridge (61); when the sealing block 652 is inserted into the interior of the connecting head 655 through the fitting hole 656 and the filter cartridge 61 is laterally rotated, the sealing block 652 and the connecting head 655 are locked and fixed to each other.

7. The medium pressure water loss instrument according to claim 6, wherein: and a second sealing gasket (657) is arranged between the end surface of the sealing block (652) and the end part of the elbow (654).

8. The medium pressure water loss instrument according to claim 1, wherein: one side of the filter paper (8) departing from the filter screen (621) is provided with a magnetic ring (81), and the magnetic ring (81) and the filter cover (62) are mutually attracted to fix the filter paper (8) on the filter screen (621).