Ultrahigh-pressure scrap catcher

Abstract

The invention relates to the technical field of oil field chip catchers, in particular to an ultrahigh-pressure chip catcher which comprises a chip catching channel. The filtering assembly comprises a pre-screening drum, a liquid outlet pipe, a first filtering ring and a second filtering ring; the backflushing assembly comprises a leakage groove formed in the inner wall of the pre-screening drum and leakage holes formed in the end faces of the first filtering ring and the second filtering ring, a blocking plate is movably arranged in the pre-screening drum, the blocking plate and the pre-screening drum are embedded in the backflushing process, a gate plate is rotationally arranged in the leakage holes, the functions of primary screening and auxiliary crushing are added, the blocking possibility is reduced, and the service life of the prescreening drum is prolonged. The larger the fluid pressure is, the better the extrusion sealing effect is, meanwhile, the blocking plate can movably rotate, the preliminary screening precision and the fluid flow are adjusted, solid chippings in fluid can be efficiently and stably captured under the working condition of the ultrahigh pressure of 175 MPa, follow-up equipment is effectively protected, the operation reliability and safety of a whole high-pressure fluid treatment system are improved, and wide application prospects are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of oil field chip catchers, in particular to an ultra-high pressure chip catcher. Background Art

[0002] In the process of high-pressure fluid transportation and processing in the fields of petrochemicals, oil and gas exploration, etc., some fluids have a gas pressure of up to 175MPa and are often mixed with various solid debris, such as rock particles, metal chips, etc. If these solid debris are not captured and removed in time, they will cause serious wear and blockage to subsequent equipment (such as high-pressure pumps, valves, pipelines, etc.), affecting the normal operation of the entire system, reducing the service life of the equipment, and even causing safety accidents.

[0003] The existing Chinese patent with authorization announcement number CN203905864U discloses a high-pressure oil and gas field debris catcher, including an inlet four-way, an outlet four-way, a first sand removal cylinder and a second sand removal cylinder; the inlet of the first sand removal cylinder is connected to the inlet four-way through a first upstream plug valve, and the outlet of the first sand removal cylinder is connected to the inlet four-way through a first downstream plug valve; the inlet of the second sand removal cylinder is connected to the inlet four-way through a second upstream plug valve, and the outlet of the second sand removal cylinder is connected to the inlet four-way through a second downstream plug valve, and the inlet four-way and the outlet four-way are also connected through a manual flat valve, and the first sand removal cylinder and the second sand removal cylinder can be used alternately without interrupting the operation, thereby improving efficiency;

[0004] However, in this solution, large particles can easily clog the front-end filter cartridge, causing inlet blockage, which is troublesome to clear and difficult to prevent and eradicate, resulting in reduced work efficiency and failure to meet the filtering accuracy requirements. In addition, traditional chip collectors often have problems such as insufficient structural strength, poor sealing performance, and low chip collection efficiency when facing ultra-high pressure working conditions such as 175MPa. It is difficult to meet the growing ultra-high pressure and high-efficiency chip collection needs of industrial production. Therefore, it is of great practical significance to develop an efficient chip collector suitable for 175MPa ultra-high pressure working conditions. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an ultra-high pressure chip collector, comprising a chip collecting channel, wherein a filter cartridge is arranged in the chip collecting channel;

[0008] The filter assembly comprises a pre-screening cylinder arranged at the inlet of the filter cartridge and a liquid outlet pipe arranged inside the filter cartridge, the outer wall of the liquid outlet pipe is simultaneously rotatably sleeved with a first filter ring and a second filter ring, and the first filter ring and the second filter ring are movably engaged with each other;

[0009] The backflushing assembly includes a leakage groove opened on the inner wall of the pre-screen cylinder and leakage holes arranged on the end faces of the first filter ring and the second filter ring. A blocking plate is movably arranged in the pre-screen cylinder. During backflushing, the blocking plate is embedded in the pre-screen cylinder. A gate plate is rotatably arranged in the leakage hole.

[0010] As a preferred solution of the ultra-high pressure chip collector described in the present invention, there are at least two chip catching channels, a filter cartridge is provided in the chip catching channel, the chip catching channel is connected to the high-pressure fluid inlet at the same time, and the chip catching channel switches the switch state according to the pressure difference on both sides of the filter cartridge.

[0011] As a preferred solution of the ultra-high pressure chip collector of the present invention, filter screen components are provided on the surfaces of the first filter ring and the second filter ring, and the filter screen components are made of porous material.

[0012] As a preferred solution of the ultra-high pressure chip collector of the present invention, the first filter ring and the second filter ring are both provided with slopes, the first filter ring and the second filter ring are movably engaged, and a driving ring is provided on the end face of the second filter ring.

[0013] As a preferred solution of the ultra-high pressure chip collector described in the present invention, wherein: a first rotating shaft is rotatably provided in the leakage hole, a rotating sleeve is provided on the outer wall of the first rotating shaft, an adjustment cavity is opened on the first filter ring, a first swing arm is provided at one end of the first rotating shaft that rotates and extends into the adjustment cavity, and a second swing arm is provided at one end of the rotating sleeve that rotates and extends into the adjustment cavity.

[0014] As a preferred solution of the ultra-high pressure chip catcher of the present invention, an adjustment seat is slidably provided in the adjustment chamber, a first elastic member is provided between the adjustment seat and the inner walls on both sides of the adjustment chamber, and a cross groove is provided on the adjustment seat.

[0015] As a preferred solution of the ultra-high pressure chip collector described in the present invention, wherein: the first swing arm and the second swing arm are respectively rotatably provided with sliding columns, the outer wall of the adjustment seat is provided with a limit column, the outer wall of the limit column is rotatably provided with a limit block, and the outer wall of the adjustment seat is also slidably provided with an adjustment frame.

[0016] As a preferred solution of the ultra-high pressure chip collector described in the present invention, wherein: the outer wall of the adjustment frame is provided with a movable rack, the end face of the adjustment chamber is fixedly provided with a bearing frame, a gear is rotatably penetrated on the bearing frame, and an adjusting cylinder is also provided on the bearing frame, and the adjusting cylinder controls the rotation of the gear according to the air pressure difference on both sides of the first filter ring and the second filter ring.

[0017] As a preferred solution of the ultra-high pressure chip collector described in the present invention, wherein: a cylinder is provided on the end face of the liquid outlet pipe, a recoil column is slidably provided inside the cylinder, a sliding block is vertically provided on the outer wall of the recoil column, and a first rotating groove, a second rotating groove and a sliding groove are respectively provided on the inner wall of the cylinder.

[0018] As a preferred solution of the ultra-high pressure chip catcher of the present invention, a movable ring is arranged between the inner wall of the cylinder and the outer wall of the recoil column, a protrusion is arranged on the inner wall of the movable ring, and a spiral groove is opened on the outer wall of the recoil column.

[0019] The beneficial effects of the present invention include: increasing the primary screening and auxiliary crushing functions, reducing the possibility of clogging, each filter ring can be backwashed and cleaned according to the pressure difference on both sides, and the flushed metal impurities are directly discharged to avoid secondary pollution and clogging, thereby improving the filtration efficiency and the cleaning efficiency. The pre-screen cylinder can also be used as a spare shut-off valve, and the greater the fluid pressure, the better the extrusion sealing effect. At the same time, the blocking plate can be movably rotated to adjust the primary screening accuracy and the fluid flow rate. It can efficiently and stably capture solid debris in the fluid under 175MPa ultra-high pressure conditions, effectively protect subsequent equipment, and improve the operating reliability and safety of the entire high-pressure fluid processing system. It has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is an overall schematic diagram of the ultra-high pressure chip catcher in the present invention.

[0022] Figure 2 It is a cross-sectional schematic diagram of the ultra-high pressure chip catcher in the present invention.

[0023] Figure 3 It is a schematic diagram of the filter cartridge in the present invention.

[0024] Figure 4 It is a schematic diagram of the internal structure of the filter cartridge in the present invention.

[0025] Figure 5 It is an enlarged view of the filter ring in the present invention.

[0026] Figure 6 It is a schematic diagram of the internal structure of the leakage hole in the present invention.

[0027] Figure 7 It is a schematic diagram of the enlarged structure of region A in the present invention.

[0028] Figure 8 It is a schematic diagram of the internal structure of the adjustment chamber in the present invention.

[0029] Fig. 9 It is a schematic diagram of the structure of the pre-screen cylinder in the present invention.

[0030] In the figure: 100, debris collection channel; 101, filter cartridge;

[0031] 200, pre-screen cylinder; 201, liquid outlet pipe; 202, first filter ring; 203, second filter ring; 2001, ramp; 2002, drive ring; 2003, first rotating shaft; 2004, rotating sleeve; 2005, adjustment chamber; 2006, first swing arm; 2007, second swing arm; 2008, adjustment seat; 2009, first elastic member; 2011, cross groove; 2012, sliding column; 2013, limiting column; 2014, limiting block; 2015, adjustment frame; 2016, movable rack; 2017, bearing frame; 2018, gear; 2019, adjustment cylinder;

[0032] 300, leakage groove; 301, leakage hole; 302, blocking plate; 303, gate plate; 3001, cylinder; 3002, recoil column; 3003, slider; 3004, first rotating groove; 3005, second rotating groove; 3006, sliding groove; 3007, moving ring; 3008, bump; 3009, spiral groove. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] Reference Figures 1 to 8 , which is the first embodiment of the present invention, provides an ultra-high pressure chip catcher.

[0038] Specifically, it includes: a chip catching channel 100, at least two chip catching channels 100 are provided, a filter cartridge 101 is provided in the chip catching channel 100, a filter cartridge 101 is provided in the chip catching channel 100, the chip catching channel 100 is connected to the high-pressure fluid inlet at the same time, and the chip catching channel 100 switches the switch state according to the pressure difference on both sides of the filter cartridge 101;

[0039] The filter assembly includes a pre-screen cartridge 200 disposed at the inlet of the filter cartridge 101 and a liquid outlet pipe 201 disposed inside the filter cartridge 101. The outer wall of the liquid outlet pipe 201 is simultaneously rotatably sleeved with a first filter ring 202 and a second filter ring 203. The first filter ring 202 and the second filter ring 203 are movably engaged with each other.

[0040] The backflushing assembly includes a leakage groove 300 opened on the inner wall of the pre-screen cylinder 200 and a leakage hole 301 arranged on the end faces of the first filter ring 202 and the second filter ring 203. A blocking plate 302 is movably arranged in the pre-screen cylinder 200. During backflushing, the blocking plate 302 is embedded with the pre-screen cylinder 200, and a gate plate 303 is rotatably arranged in the leakage hole 301.

[0041] Among them, in this embodiment, there are two chip catching channels 100, and the two channels can be used simultaneously or separately. It is mainly composed of a tight cap, round steel, spring retaining ring for shaft, plug, disassembly tool, S-type sealing ring, pressure relief screw assembly, filter cartridge 101, electric gate valve, threaded bolts, nuts, sealing gaskets, four-way, blind flange, filter cartridge 101, filter assembly, tee, double male short joint, square straight-through stop valve, double-scale anti-seismic and anti-sulfur pressure gauge, base, chip catcher manifold control cabinet and other parts. The above parts are all standard parts and are in accordance with Figure 1 Arranged in the order shown.

[0042] Preferably, the outer shell of the filter cartridge 101 and the pressure-bearing parts such as the valve body, four-way, three-way, blind flange, etc. used in this embodiment are made of high-strength alloy steel, and the inner wall thereof is specially hardened to enhance wear resistance and pressure resistance. The wall thickness of the parts is set according to the bearing pressure of 175 MPa to ensure that no deformation or rupture occurs under the internal pressure of 175 MPa.

[0043] Preferably, the high-pressure fluid enters each filter cartridge 101 through the set inlet four-way, and the inlet four-way is connected to the filter cartridge 101 through an electric gate valve. A high-strength sealing gasket is used at the connection to prevent leakage under ultra-high pressure. The inner diameter of the inlet four-way is matched with the inner diameter of the filter cartridge 101 to ensure that the fluid can smoothly enter the interior of the filter assembly.

[0044] Among them, the electric gate valve connection can make the fluid after the debris is captured flow out smoothly, reducing pressure loss. Pressure gauges are respectively set at the outlet four-way and the inlet four-way to monitor the pressure difference between the inlet and the outlet, and to evaluate whether the filter cartridge 101 is blocked and whether the debris in the first filter ring 202 and the second filter ring 203 needs backwashing and cleaning.

[0045] More preferably, in this embodiment, a filter assembly is provided on the surface of the first filter ring 202 and the second filter ring 203. The filter assembly is made of porous material, has good filtering effect, can withstand internal erosion of up to 175MPa pressure fluid and has good thermal conductivity. The filtering accuracy of the filter assembly is preset in advance according to the type of filtered liquid, and the two fit tightly to ensure that the filter assembly will not be displaced or damaged under the impact of high-pressure fluid.

[0046] Furthermore, a sewage outlet is provided at the bottom of the filter cartridge 101, and the sewage outlet is connected to the bottom of the filter cartridge 101. When the captured solid debris needs to be cleaned, the electric gate valves upstream and downstream of the filter cartridge 101 in the channel can be closed and then the solid debris in the filter screen assembly can be discharged through the sewage outlet.

[0047] The entire chip catcher connects all pressure-bearing parts in direct contact with the fluid through high-strength bolts, and the seals between the joints adopt a composite sealing method that combines a new type of metal sealing ring with an elastic sealing material. This sealing method can effectively prevent fluid leakage in an ultra-high pressure environment and ensure the sealing performance of the chip catcher.

[0048] In summary, when in use, high-pressure fluid containing solid debris enters the filter cartridge 101 from the inlet four-way valve and is preliminarily screened through the pre-screen cartridge 200 to remove large particles of debris. When the fluid passes through the filter assembly, the solid debris is captured, and the filtered clean fluid flows into the liquid outlet pipe 201 through the outlet four-way valve and is discharged. When the debris captured by the filter assembly reaches a certain amount, the equipment can be stopped, the valves of the inlet four-way valve and the outlet four-way valve can be closed, and the solid debris in the filter assembly can be discharged. After cleaning, it can be put into use again.

[0049] Example 2

[0050] Reference Figures 1 to 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but has an auxiliary crushing function to reduce the possibility of clogging. Each filter ring can be backwashed and cleaned according to the pressure difference on both sides. The flushed metal impurities are directly discharged to avoid secondary pollution and clogging, thereby improving the filtration efficiency and the cleaning efficiency.

[0051] Specifically, the first filter ring 202 and the second filter ring 203 are both provided with a slope 2001 , the first filter ring 202 and the second filter ring 203 are movably engaged, and the end surface of the second filter ring 203 is provided with a driving ring 2002 .

[0052] The driving ring 2002 always drives the second filter ring 203 to rotate. The second filter ring 203 rotates forward during filtering and rotates in the opposite direction during backwashing. The first filter ring 202 is driven to rotate only when the second filter ring 203 rotates reversely.

[0053] Among them, the part of the leakage hole 301 on the first filter ring 202 is cylindrical in shape and is filled with a sponge filter component with low filtering accuracy. It has a certain elasticity and can allow larger particles to pass through. The part of the leakage hole 301 on the first filter ring 202 is conical in shape, and the inner diameter becomes smaller as it goes outward, and is filled with a ceramic filter component with higher accuracy.

[0054] Preferably, the slope 2001 on the first filter ring 202 is in opposite direction to that on the second filter ring 203, so that the two can be interlocked, and the driving ring 2002 drives the second filter ring 203 to rotate on the liquid outlet pipe 201, and the first filter ring 202 is connected to the first filter ring 202 through an elastic member, so that when the second filter ring 203 rotates, the inclined surfaces of the two slopes 2001 contact each other and slide in close proximity, first pushing the first filter ring 202 away, and then falling on the right-angle surface of the slope 2001.

[0055] The first filter ring 202 does not rotate and is not connected to the sewage outlet when it works normally. When it rotates, the notch on its outer wall is connected to the sewage outlet to directly discharge the waste liquid between the two filter rings.

[0056] Furthermore, a first rotating shaft 2003 is rotatably provided in the leakage hole 301, a rotating sleeve 2004 is provided on the outer wall of the first rotating shaft 2003, an adjustment cavity 2005 is opened on the first filter ring 202, a first swing arm 2006 is provided on one end of the first rotating shaft 2003 that rotates and extends into the adjustment cavity 2005, and a second swing arm 2007 is provided on one end of the rotating sleeve 2004 that rotates and extends into the adjustment cavity 2005.

[0057] Among them, the rotating sleeve 2004 is coaxially rotatably sleeved on the outer wall of the first rotating shaft 2003, and the rotating sleeve 2004 is provided with multiple openings, so that the first rotating shaft 2003 is directly connected to the gate plate 303, the gate plate 303 is semicircular and the radius surface is respectively connected to the first rotating shaft 2003 and the outer wall of the rotating sleeve 2004, and the two gate plates 303 are arranged in parallel in the initial state, and are spliced ​​together into a complete circle to block the liquid in the leakage hole 301 from passing through.

[0058] Preferably, an adjustment seat 2008 is slidably provided in the adjustment cavity 2005 , a first elastic member 2009 is provided between the adjustment seat 2008 and inner walls on both sides of the adjustment cavity 2005 , and a cross groove 2011 is provided on the adjustment seat 2008 .

[0059] Among them, the first swing arm 2006 and the second swing arm 2007 are respectively provided with sliding columns 2012 for rotation, the outer wall of the adjustment seat 2008 is provided with a limiting column 2013, the outer wall of the limiting column 2013 is rotatably provided with a limiting block 2014, and the outer wall of the adjustment seat 2008 is also slidably provided with an adjustment frame 2015.

[0060] More preferably, the two slide posts 2012 are slidably disposed on the left and right sides of the cross slot 2011 , respectively, the rotating sleeve 2004 and the first rotating shaft 2003 are slidably disposed in the upper and lower directions of the cross slot 2011 , and the limit block 2014 is slidably disposed on the inner wall of the adjustment frame 2015 .

[0061] Preferably, a movable rack 2016 is provided on the outer wall of the adjustment frame 2015, a bearing frame 2017 is fixedly provided on the end face of the adjustment chamber 2005, a gear 2018 is rotatably provided on the bearing frame 2017, and an adjusting cylinder 2019 is also provided on the bearing frame 2017. The adjusting cylinder 2019 controls the rotation of the gear 2018 according to the air pressure difference between the first filter ring 202 and the second filter ring 203.

[0062] Among them, in this embodiment, the length inside the adjustment frame 2015 is such that after the adjustment seat 2008 slides the entire distance, the first swing arm 2006 and the second swing arm 2007 rotate 45°. In the initial state, the limit block 2014 is tightly attached to one side of the inner wall of the adjustment frame 2015. The adjustment cylinder 2019 is adjusted to control the left and right movement of the adjustment frame 2015, so that the sliding stroke of the adjustment seat 2008 is respectively to slide to the left and to slide to the right, and the rotatable stroke of each gate plate 303 is respectively 45° to the left and 45° to the right.

[0063] In summary, when in use, the high-pressure fluid is initially screened through the pre-screen cylinder 200 to remove large particles of impurities to prevent clogging. The fluid then enters the interior of the filter cartridge 101, passes through each first filter ring 202 and second filter ring 203 layer by layer, and enters the liquid outlet pipe 201 through the outlet four-way before being discharged. The entire filtration process is carried out dynamically to ensure internal pressure balance.

[0064] At the same time, in the working state, the limit block 2014 is tightly attached to the left side of the inner wall of the adjustment frame 2015, and the gate 303 can be rotated 45° to the right. As the second filter ring 203 rotates, the first filter ring 202 is pushed to move closer and farther away cyclically. When the two move away from each other, the high-pressure fluid is attracted to push the two gates 303 and enter the area between the first filter ring 202 and the second filter ring 203 through coarse filtration. Then the two filter rings approach each other, and the pressure in the area increases, pushing the two gates 303 to reset and block the leakage hole 301. At this time, the fluid can only pass through the ceramic filter assembly in the conical cavity on the second filter ring 203 for fine filtration. Impurities that cannot pass through are crushed when the two filter rings are tightly fitted, which is convenient for passing through the fine filtration area in the next cycle, thereby having both filtering and auxiliary crushing functions to prevent clogging.

[0065] Exemplarily, when the first filter ring 202 and the second filter ring 203 are blocked, the machine can be stopped for backwashing. At this time, the pressure difference on both sides changes, so that the adjustment cylinder 2019 drives the gear 218 to rotate, and drives the adjustment seat 2008 to move to the left by moving the rack 2016 until the limit block 2014 is close to the right side of the inner wall of the adjustment frame 2015. At this time, the second filter ring 203 drives the first filter ring 202 to rotate and makes the area between the two filter rings connected to the sewage outlet. The liquid can pass through the leakage hole 301 and backwash each filter ring at the same time, flushing and discharging the impurities on the inner wall of the leakage hole 301, and discharging the whole;

[0066] At the same time, in other embodiments, backflushing can be performed without stopping the machine. At this time, the adjustment cylinder 2019 does not move, the gate 303 maintains its initial state, and cleaning liquid is introduced into the right side of the area that needs backflushing cleaning to perform local backflushing. At the same time, it can also prevent the flushed impurities from entering the liquid in the area to be filtered and causing secondary blockage, thereby improving the filtering effect. Each filter ring can be backflushed separately without disassembly and shutdown, thereby improving the filtering efficiency.

[0067] Example 3

[0068] Reference Figure 1-Figure 8 , which is the third embodiment of the present invention, is based on the previous embodiment, except that the pre-screen cylinder 200 can also be used as a backup shut-off valve, and the greater the fluid pressure, the better the extrusion sealing effect, and the blocking plate 302 can be movably rotated to adjust the initial screening accuracy and fluid flow rate.

[0069] Specifically, the pre-screen cylinder 200 is in the shape of a truncated cone, and the side with a smaller opening is close to the interior of the filter cylinder 101. The leakage grooves 300 are arranged in a circular array. An interlayer hollow cavity is opened on the pre-screen cylinder 200. The blocking plate 302 is rotatably arranged in the pre-screen cylinder 200. In this embodiment, there are five leakage grooves 300 and five blocking plates 302 respectively.

[0070] The end face of the liquid outlet pipe 201 is provided with a cylinder 3001, a recoil column 3002 is slidably provided inside the cylinder 3001, a slider 3003 is vertically provided on the outer wall of the recoil column 3002, and a first rotating groove 3004, a second rotating groove 3005 and a sliding groove 3006 are respectively provided on the inner wall of the cylinder 3001.

[0071] Furthermore, the first rotating groove 3004 and the second rotating groove 3005 are coaxially arranged annular grooves, and the sliding groove 3006 is perpendicular to and connects the two annular grooves. In this embodiment, there are 8 sliding grooves 3006 in a circular array. Every time the slider 3003 rotates 45° in the rotating groove, it can enter the next sliding groove 3006.

[0072] A moving ring 3007 is provided between the inner wall of the cylinder 3001 and the outer wall of the recoil column 3002 , a protrusion 3008 is provided on the inner wall of the moving ring 3007 , and a spiral groove 3009 is provided on the outer wall of the recoil column 3002 .

[0073] More preferably, the protrusion 3008 is slidably arranged on the inner wall of the spiral groove 3009, and the movable ring 3007 is driven to move by the transmission cylinder. When the air pressure on both sides reaches the set threshold, the transmission cylinder drives the movable ring 3007 to move to the right. At the same time, the recoil column 3002 is connected to the blocking plate 302 and drives it to slide, and the movable ring is connected to the pre-screen cylinder 200 and drives it to slide.

[0074] In summary, when in use, as the filter cartridge 101 is blocked and the internal pressure increases, after reaching the set threshold, the transmission cylinder moves and drives the moving ring 3007 to move, driving the recoil column 3002 and the pre-screen cartridge 200 to move to the right. At this time, the pre-screen cartridge 200 and the truncated cone cavity at the entrance gradually approach until they are fitted together, and the fluid flow that can pass through is reduced. The plugging plate 302 can also be adjusted and rotated separately to achieve the adjustment of the initial screening accuracy and the size of the incoming flow. When the slider 3003 slides along the sliding groove 3006 to the second rotating groove 3005, it cannot move further, so that the moving ring 3007 drives the recoil column 3002 to rotate through the protrusion 3008, and the plugging plate 302 blocks the leakage groove 300, realizing the shutdown process of the filter cartridge 101. At the same time, because the high-pressure fluid on the left side of the pre-screen cartridge 200 is greater at this time, the pressure squeezes the pre-screen cartridge 200 to fit with the truncated cone cavity. The greater the sealing effect.

[0075] At the same time, when the cleaning is completed and the machine needs to be started, the pre-screen cylinder 200 is under great pressure and is difficult to open. At this time, the movable ring 3007 moves in the opposite direction, first driving the recoil column 3002 to rotate in the opposite direction, so that the blocking plate 302 leaves the leakage groove 300, releasing part of the fluid into the filter cylinder 101, eliminating the pressure on the pre-screen cylinder 200, so that the pre-screen cylinder 200 can slowly open and reset after the liquid flows on both sides, and continue the primary screening process. In addition, when the blocking plate 302 rotates repeatedly in the pre-screen cylinder 200, the blocked impurities can be ground and squeezed, thereby playing an auxiliary role in clearing the blockage.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An ultra-high pressure chip catcher, characterized in that: include: A chip catching channel (100), wherein a filter cartridge (101) is provided in the chip catching channel (100); A filter assembly comprises a pre-screen cartridge (200) arranged at the inlet of the filter cartridge (101) and a liquid outlet pipe (201) arranged inside the filter cartridge (101); a first filter ring (202) and a second filter ring (203) are rotatably sleeved on the outer wall of the liquid outlet pipe (201); the first filter ring (202) and the second filter ring (203) are movably engaged with each other; The backflushing assembly comprises a leakage groove (300) provided on the inner wall of the pre-screen cylinder (200) and a leakage hole (301) provided on the end faces of the first filter ring (202) and the second filter ring (203); a blocking plate (302) is movably provided in the pre-screen cylinder (200); during backflushing, the blocking plate (302) is engaged with the pre-screen cylinder (200); and a gate plate (303) is rotatably provided in the leakage hole (301).

2. The ultra-high pressure chip catcher according to claim 1, characterized in that: At least two chip catching channels (100) are provided, a filter cartridge (101) is provided in the chip catching channel (100), the chip catching channel (100) is simultaneously connected to a high-pressure fluid inlet, and the chip catching channel (100) switches a switch state according to a pressure difference on both sides of the filter cartridge (101).

3. The ultra-high pressure chip catcher according to claim 2, characterized in that: Filter screen components are provided on the surfaces of the first filter ring (202) and the second filter ring (203), and the filter screen components are made of porous material.

4. The ultra-high pressure chip catcher according to claim 2, characterized in that: The first filter ring (202) and the second filter ring (203) are both provided with a slope (2001), the first filter ring (202) and the second filter ring (203) are movably engaged, and the end surface of the second filter ring (203) is provided with a drive ring (2002).

5. The ultra-high pressure chip catcher according to claim 4, characterized in that: A first rotating shaft (2003) is rotatably provided in the leakage hole (301), a rotating sleeve (2004) is sleeved on the outer wall of the first rotating shaft (2003), an adjustment cavity (2005) is provided on the first filter ring (202), a first swing arm (2006) is provided on one end of the first rotating shaft (2003) that rotates and extends into the adjustment cavity (2005), and a second swing arm (2007) is provided on one end of the rotating sleeve (2004) that rotates and extends into the adjustment cavity (2005).

6. The ultra-high pressure chip catcher according to claim 5, characterized in that: An adjustment seat (2008) is slidably disposed in the adjustment cavity (2005), a first elastic member (2009) is disposed between the adjustment seat (2008) and inner walls on both sides of the adjustment cavity (2005), and a cross groove (2011) is provided on the adjustment seat (2008).

7. The ultra-high pressure chip catcher according to claim 6, characterized in that: The first swing arm (2006) and the second swing arm (2007) are respectively provided with sliding columns (2012) for rotation, the outer wall of the adjustment seat (2008) is provided with a limiting column (2013), the outer wall of the limiting column (2013) is provided with a limiting block (2014) for rotation, and the outer wall of the adjustment seat (2008) is also provided with an adjustment frame (2015) for sliding.

8. The ultra-high pressure chip catcher according to claim 7, characterized in that: The outer wall of the adjustment frame (2015) is provided with a movable rack (2016), the end surface of the adjustment chamber (2005) is fixedly provided with a bearing frame (2017), a gear (2018) is rotatably provided on the bearing frame (2017), and an adjustment cylinder (2019) is also provided on the bearing frame (2017), and the adjustment cylinder (2019) controls the rotation of the gear (2018) according to the air pressure difference between the two sides of the first filter ring (202) and the second filter ring (203).

9. The ultra-high pressure chip catcher according to claim 8, characterized in that: The end surface of the liquid outlet pipe (201) is provided with a cylinder (3001), a recoil column (3002) is slidably provided inside the cylinder (3001), a sliding block (3003) is vertically provided on the outer wall of the recoil column (3002), and a first rotating groove (3004), a second rotating groove (3005) and a sliding groove (3006) are respectively provided on the inner wall of the cylinder (3001).

10. The ultra-high pressure chip catcher according to claim 9, characterized in that: A movable ring (3007) is provided between the inner wall of the cylinder (3001) and the outer wall of the recoil column (3002), a protrusion (3008) is provided on the inner wall of the movable ring (3007), and a spiral groove (3009) is provided on the outer wall of the recoil column (3002).

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