CN218130450U - Well head filter equipment - Google Patents

Abstract

The utility model discloses a well head filter equipment, including circular rose box, the top left side intercommunication of circular rose box is fixed with the water injection and takes over, and the bottom intercommunication of circular rose box is fixed with the liquid flow velocity appearance, and the delivery port intercommunication of liquid flow velocity appearance is fixed with the discharge and takes over, horizontal fixed mounting has the baffle in the circular rose box. The utility model discloses can filter the solid particle impurity in the water when the water injection and hold back the collection, through detecting the water velocity of flow and being less than the mode of automatic alarm when predetermineeing the velocity of flow value, be convenient for in time report to the police when left cylindric filter screen takes place to block up and remind personnel's clearance, make things convenient for personnel's in time to handle, and form the mode of filtering the clearance in turn through quick unblock and to two cylindric filter screen rotation change positions, need not stop the water injection work, play the effect of removing out fast to filterable solid particle impurity clearance when not shutting down, save the downtime, and the work efficiency is improved.

Description

Well head filter equipment

Technical Field

The utility model relates to a well head water injection filters technical field, specifically is a well head filter equipment.

Background

The water injection well is used for the well of water injection to the oil reservoir, in the development process of the oil field, inject water into the oil reservoir through the specialized water injection well, keep or resume the reservoir pressure, make the oil reservoir have stronger driving force, in order to improve exploitation rate and recovery ratio of the oil reservoir, need the high-pressure water through purification treatment while injecting water, the purification work is carried on in the water injection pump station usually, but the purified water is transported to the well head through the long distance, wherein very probably will mix some impurity, therefore need to use the filtering device of well head to filter the water body, avoid it causes the jam of the pipeline in service; the existing wellhead filtering device realizes the filtration and interception of impurities in water by filter screens in filtering devices such as a filter box and the like;

however, the direct filtration and interception by using the filter screen has the following disadvantages: 1. due to long-time filtration, a filter screen in the filter box is easy to block and needs to be taken out for cleaning, the filter box needs to be stopped to stop water injection during cleaning, the waiting time for stopping, dismounting and cleaning is long, and the working efficiency is low; 2. personnel are required to regularly observe the filter screen to judge whether the filter screen is blocked; in view of this, we propose a wellhead filtration device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well head filter equipment to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a wellhead filtering device comprises a circular filtering box, wherein the left side of the top of the circular filtering box is communicated and fixed with a water injection connecting pipe, the bottom of the circular filtering box is communicated and fixed with a liquid flow velocity meter, and a water outlet of the liquid flow velocity meter is communicated and fixed with a discharge connecting pipe;

a partition plate is horizontally and fixedly installed in the circular filter box, a circular seat is in sealing movable contact between the inner wall of the top of the circular filter box and the top of the partition plate, both sides of the top of the circular seat are provided with water through holes, the water through hole on the left side is communicated with a water injection connecting pipe, and a cleaning outlet communicated with the water through hole on the right side is formed in the inner wall of the top of the circular filter box;

a filtering and slag collecting component in movable contact with the top of the partition plate is movably sleeved in the water through hole and used for filtering and collecting solid impurities in water when water is injected into a wellhead;

the top of the partition plate is fixedly embedded with two one-way water passing assemblies, the tops of the one-way water passing assemblies are communicated with the corresponding water passing holes, and the one-way water passing assemblies are used for discharging water in the water passing holes downwards in one way;

the bottom of the circular seat is provided with a circular groove, an elastic tightening locking assembly is installed in the circular groove, the top end of the elastic tightening locking assembly extends to the upper part of the circular filter box and is fixedly connected with a clip-shaped handle, the bottom end of the elastic tightening locking assembly is tightly contacted with a hard anti-skid rubber mat, the hard anti-skid rubber mat is bonded and fixed to the top of the partition plate, and the elastic tightening locking assembly is used for tightening, locking and preventing rotation of the circular seat;

the fixed and electrically connected with controller in liquid current meter's right side, the fixed and electrically connected with audible-visual annunciator in top of controller, the liquid current meter that sets up is used for detecting the velocity of flow of the water that flows and transmits for controller velocity of flow value signal to it controls audible-visual annunciator when being less than predetermineeing the velocity of flow and reminds personnel to clear up.

Preferably, it includes cylindric filter screen, connecting rod and the pull ring that the top set up for the opening to filter collection sediment subassembly, cylindric filter screen movable sleeve is established in the limbers that correspond, the bottom of connecting rod and the bottom inner wall fixed connection of the cylindric filter screen that corresponds, the bottom of pull ring and the top fixed connection of the connecting rod that corresponds, the bottom of cylindric filter screen and the top movable contact of baffle, cylindric filter screen, connecting rod and the pull ring cooperation of setting realize filtering and concentrating the collection to the solid impurity of aquatic.

Preferably, the one-way water passing assembly comprises water collecting covers and a one-way valve, the two water collecting covers are respectively embedded and fixed on two sides of the top of the partition plate, the two water collecting covers are respectively communicated with the corresponding water passing holes, the bottom ends of the water collecting covers extend to the lower portion of the partition plate and are communicated and fixed with the tops of the corresponding one-way valves, the bottom of the one-way valve is an outlet, and the arranged water collecting covers are matched with the one-way valve to realize downward one-way flow guide of water in the water passing holes.

Preferably, the elastic tightening locking assembly comprises a circular block, a plurality of pointed blocks, two guide shafts, two compression springs and a pull rod, wherein the compression springs and the pull rod are in a compression state, the circular block is slidably sleeved in the circular groove, the pointed blocks are fixedly connected to the bottom of the circular block at equal intervals in an annular mode, the pointed ends of the pointed blocks are in tight extrusion contact with the top of the hard anti-slip rubber mat, the top of the circular block is fixedly connected with the bottom ends of the two guide shafts, the circular seat is slidably sleeved on the two guide shafts, the top ends and the bottom ends of the compression springs are respectively fixedly connected with the inner wall of the top of the circular groove and the top of the circular block, the compression springs are movably sleeved on the corresponding guide shafts, the pull rod is located between the two guide shafts and is fixedly connected with the top of the circular block, the top end of the pull rod extends to the upper side of the circular filter box and is fixedly connected with the bottom of the reverse-shaped handle, the circular seat is slidably sleeved on the pull rod, a penetrating hole is formed in the top center of the circular filter box, the pull rod is located in the penetrating hole and does not contact with the inner wall of the penetrating hole, the circular block, the guide shafts, the compression springs are matched with the pointed blocks, the elastic tightening driving spring, the pointed blocks are tightly driven by the compression springs, the pull rod, the circular block is tightly matched with the hard anti-slip seat, and the rotary seat, and the pull rod, and the anti-slip seat, and the anti-slip locking pad, and the filter screen can be further matched with the anti-slip filter screen, and the anti-slip filter.

Preferably, the top right side of circular rose box rotates and is connected with the apron, and the top left side fixedly connected with of apron pulls the ring, and the apron is located the top of clearance export and cooperatees with the clearance export.

Preferably, the circular filter box consists of a circular box body with an opening at the bottom and a box cover fixed at the bottom of the circular box body.

Preferably, the top and the bottom of the circular base are fixedly bonded with elastic sealing rubber pads, one sides of the two elastic sealing rubber pads, which are far away from each other, are respectively in close contact with the inner wall of the top of the circular filter box and the top of the partition plate, and the top of each elastic sealing rubber pad is provided with two communicating holes which are respectively communicated with the corresponding water through holes.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the wellhead filtering device can filter, retain and collect solid particle impurities in a water body in the cylindrical filter screen during wellhead water injection through the matching of the arranged water injection connecting pipe, the water through hole, the cylindrical filter screen, the circular seat, the circular filter box and the one-way water through component;

2. according to the wellhead filtering device, the liquid flow velocity meter, the controller and the audible and visual alarm are matched, after the controller is used for setting the opening flow velocity value of the audible and visual alarm in advance, the flow velocity of the flowing water body can be detected, and the audible and visual alarm is automatically controlled to be opened when the flow velocity value is lower than the opening flow velocity value, so that the effect of timely and automatically alarming to remind people to clean when the left cylindrical filter screen is blocked is realized;

3. this well head filter equipment, shape handle returns through the setting, elasticity tightens the lock solid subassembly, circular seat and cylindric filter screen cooperation, when shape handle drives the pull rod upward movement at last pulling back, can drive the circular piece upwards to compress two compression spring, and drive a plurality of sharp pieces upwards and the separation of stereoplasm antiskid cushion, remove the lock solid, when following up forward one hundred eighty degrees rotation shape handle, can loop through the pull rod, circular piece and two guiding axles drive circular seat and rotate, with this position to two cylindric filter screens forms the change, and then form the effect of filtering the clearance in turn, form the mode of filtering the clearance in turn through quick unblock and to two cylindric filter screen rotation change positions, need not stop water injection work, consequently, need not shut down and can realize the clearance to solid particle impurity.

The utility model discloses can filter the solid particle impurity in the water when the water injection and hold back the collection, through detecting the water velocity of flow and being less than the mode of automatic alarm when predetermineeing the velocity of flow value, be convenient for in time report to the police when left cylindric filter screen takes place to block up and remind personnel's clearance, make things convenient for personnel's timely processing, and form the mode of filtering the clearance in turn through quick unblock and to two cylindric filter screen rotatory change positions, need not stop the water injection work, play the effect of removing out to filterable solid particle impurity clearance fast when not shutting down, save the downtime, and the work efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic sectional view of the front view of the present invention;

fig. 3 is an enlarged schematic structural diagram of a portion a in fig. 2 according to the present invention.

In the figure: 1. a circular filter box; 101. a water injection connecting pipe; 102. a liquid flow meter; 103. an audible and visual alarm; 2. a partition plate; 3. a circular seat; 4. a water through hole; 5. a cylindrical filter screen; 6. a pull ring; 7. cleaning the outlet; 8. a cover plate; 9. a one-way valve; 10. a circular groove; 11. a circular block; 12. a hard non-slip rubber mat; 13. a sharp block; 14. a pull rod; 15. a guide shaft; 16. a compression spring; 17. a clip-shaped handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the wellhead filtering device provided by the embodiment includes a circular filtering tank 1, a water injection connecting pipe 101 is communicated and fixed on the left side of the top of the circular filtering tank 1, a liquid flow rate meter 102 is communicated and fixed on the bottom of the circular filtering tank 1, a water outlet of the liquid flow rate meter 102 is communicated and fixed with a discharge connecting pipe, and the circular filtering tank 1 is composed of a circular tank body with an opening at the bottom and a tank cover fixed on the bottom of the circular tank body;

a partition plate 2 is horizontally and fixedly installed in the circular filter box 1, a circular seat 3 is in sealing movable contact between the inner wall of the top of the circular filter box 1 and the top of the partition plate 2, water through holes 4 are formed in both sides of the top of the circular seat 3, the water through holes 4 positioned on the left side are communicated with a water injection connecting pipe 101, elastic sealing rubber pads are fixedly bonded on the top and the bottom of the circular seat 3, one sides, away from each other, of the two elastic sealing rubber pads are respectively in close contact with the inner wall of the top of the circular filter box 1 and the top of the partition plate 2, two communicating holes communicated with the corresponding water through holes 4 are formed in the top of the elastic sealing rubber pads, and the two elastic sealing rubber pads are arranged to seal the top inner walls of the circular seat 3 and the circular filter box 1 and the top of the partition plate 2, a cleaning outlet 7 communicated with the water through hole 4 on the right side is formed in the inner wall of the top of the circular filter box 1, a cover plate 8 is rotatably connected to the right side of the top of the circular filter box 1, two support sleeves are fixedly connected to the right side of the top of the cover plate 8, rotating shafts are fixedly connected to the right side of the front side and the right side of the rear side of the cover plate 8, rotating bearings are fixedly sleeved in the support sleeves, the inner sides of inner rings of the rotating bearings are fixedly sleeved with the outer sides of the corresponding rotating shafts, the cover plate 8 is rotatably installed at the top of the cover plate 8 through the two rotating shafts, the two rotating bearings and the two support sleeves, the effect of rotatably supporting the cover plate 8 is achieved, a pulling ring is fixedly connected to the left side of the top of the cover plate 8, the cover plate 8 is located above the cleaning outlet 7 and matched with the cleaning outlet 7, and the arranged cover plate 8 achieves the effect of shielding and preventing slag from falling to the cleaning outlet 7;

a filtering slag collecting component in movable contact with the top of the partition board 2 is movably sleeved in the water through hole 4 and used for filtering and collecting solid impurities in water when water is injected into a wellhead, wherein the filtering slag collecting component comprises a cylindrical filter screen 5, a connecting rod and a pull ring 6, the top of the cylindrical filter screen 5 is provided with an opening, the cylindrical filter screen 5 is movably sleeved in the corresponding water through hole 4, the bottom end of the connecting rod is fixedly connected with the inner wall of the bottom of the corresponding cylindrical filter screen 5, the bottom of the pull ring 6 is fixedly connected with the top end of the corresponding connecting rod, the bottom of the cylindrical filter screen 5 is in movable contact with the top of the partition board 2, the arranged cylindrical filter screen 5, the connecting rod and the pull ring 6 are matched, and the filtering and the concentrated collection of the solid impurities in the water are realized by using the cylindrical filter screen 5;

the top of the partition plate 2 is fixedly embedded with two one-way water passing assemblies, the tops of the one-way water passing assemblies are communicated with the corresponding water passing holes 4, the one-way water passing assemblies are used for discharging water in the water passing holes 4 in a downward one-way mode, the one-way water passing assemblies comprise water collecting covers and one-way valves 9, the two water collecting covers are fixedly embedded on two sides of the top of the partition plate 2 respectively, the top of the partition plate 2 is provided with two conical embedded holes which are fixedly bonded with the outer sides of the corresponding water collecting covers respectively, the water collecting covers are fixedly embedded on the top of the partition plate 2 through the corresponding conical embedded holes and are communicated with the corresponding water passing holes 4 respectively, the bottom ends of the water collecting covers extend to the lower side of the partition plate 2 and are fixedly communicated with the tops of the corresponding one-way valves 9, the bottoms of the one-way valves 9 are outlets, the arranged water collecting covers are matched with the one-way valves 9, one-way flow guiding of the water in the water passing holes 4 downward is realized, and the phenomenon of upward backflow is prevented by the one-way valves 9;

the bottom of the circular base 3 is provided with a circular groove 10, an elastic tightening locking assembly is arranged in the circular groove 10, the top end of the elastic tightening locking assembly extends to the upper part of the circular filter box 1 and is fixedly connected with a clip handle 17, the bottom end of the elastic tightening locking assembly is tightly contacted with a hard anti-skid rubber mat 12, the hard anti-skid rubber mat 12 is fixedly bonded on the top of the partition plate 2, the elastic tightening locking assembly is used for tightening and anti-rotation locking of the circular base 3, wherein the elastic tightening locking assembly comprises a circular block 11, a plurality of sharp blocks 13, two guide shafts 15, two compression springs 16 and pull rods 14 which are in a compression state, the circular block 11 is slidably sleeved in the circular groove 10, the plurality of sharp blocks 13 are fixedly connected to the bottom of the circular block 11 at equal intervals in an annular shape, the sharp ends of the sharp blocks 13 are in tight pressing contact with the top of the hard anti-skid rubber mat 12, the top of the circular block 11 is fixedly connected with the bottom ends of the two guide shafts 15, the circular base 3 is slidably sleeved on the two guide shafts 15, the inner wall of the top of the circular groove 10 is provided with the top end of the guide shaft 14, the guide shaft 14 is slidably connected with the top of the circular base, the guide shaft 14, the guide holes, the top of the guide shaft 14 is connected with the top of the circular base, the guide shaft 14, the circular base 3 is slidably sleeved on the pull rod 14 through the vertical guide hole to achieve the effect that the pull rod 14 penetrates through and vertically slidably guides the pull rod 14, a penetrating hole is formed in the center of the top of the circular filter box 1, the pull rod 14 is located in the penetrating hole and does not contact with the inner wall of the penetrating hole, the circular block 11, the point block 13, the guide shaft 15, the compression spring 16 and the pull rod 14 are arranged in a matched mode, the point block 13 and the hard anti-skid rubber pad 12 are driven by the elastic force of the compression spring 16 to extrude and tighten friction force, locking and rotation prevention of the circular block 11 are achieved, the circular base 3 is further limited and prevented from rotating through the guide shaft 15, the circular base is further matched with the reverse-shaped handle 17, the locking state can be released to facilitate the circular base 3 to rotate to replace the two cylindrical filter screens 5 through the pull rod 14 and the circular block 11 in a sequential mode when the reverse-shaped handle 17 is pulled upwards, and the point block 13 is driven to separate from the hard anti-skid rubber pad 12, and the locking state is released;

the right side of the liquid flow velocity instrument 102 is fixedly and electrically connected with a controller, the top of the controller is fixedly and electrically connected with an audible and visual alarm 103, and the arranged liquid flow velocity instrument 102 is used for detecting the flow velocity of the flowing water and transmitting the flow velocity value signal to the controller so as to control the audible and visual alarm to remind personnel to clean when the flow velocity is lower than a preset flow velocity; the utility model discloses can filter the solid particle impurity in the water when the water injection and hold back the collection, through detecting the water velocity of flow and being less than the mode of automatic alarm when predetermineeing the velocity of flow value, be convenient for in time report to the police when 5 take place to block up at left cylindric filter screen and remind personnel's clearance, make things convenient for personnel's timely processing, and form the mode of filtering the clearance in turn through quick unblock and to 5 rotatory change positions of two cylindric filter screens, need not stop the water injection work, play the effect of shifting out to filterable solid particle impurity clearance fast when not shutting down, save the downtime, and the work efficiency is improved.

The application method of the embodiment comprises the following steps: when the water injection device is used, the water injection connecting pipe 101 is connected with an external water injection water supply pipeline, the discharge connecting pipe is connected with a water injection pipe of a wellhead of an external water injection well, water enters the left limber 4 through the water injection connecting pipe 101, then downwards passes through the left cylindrical filter screen 5, then downwards discharges through the left one-way valve 9, then downwards enters the liquid flow velocity instrument 102, and then enters the wellhead water injection pipe, wherein when the water passes through the left cylindrical filter screen 5, the left cylindrical filter screen 5 can filter, retain and collect solid particle impurities in the water at the inner side of the water, so that the risk of blockage caused by the fact that the solid particle impurities enter the subsequent wellhead water injection pipe in large quantity is reduced;

the controller is used in advance, a flow velocity value for controlling the opening of the audible and visual alarm 103 is set, the liquid flow velocity meter 102 detects the flow velocity of water passing through and transmits the flow velocity to the controller, when the left cylindrical filter screen 5 is blocked, the outflow velocity of water is reduced, when the flow velocity is lower than the preset value, the phenomenon that the left cylindrical filter screen 5 is blocked is represented, the controller controls the audible and visual alarm 103 to be opened, audible and visual alarm reminding is performed, the effect of timely and automatically alarming to remind a person to clear when the left cylindrical filter screen 5 is blocked is achieved, the person can conveniently and timely treat the water, the observation and judgment of the person are not needed, and time and labor are saved;

when cleaning, the clip handle 17 is pulled upwards to drive the pull rod 14 to move upwards, the pull rod 14 drives the circular block 11 to move upwards and compress the two compression springs 16, the circular block 11 drives the plurality of sharp blocks 13 to separate upwards from the hard anti-skid rubber mat 12, locking is released, the clip handle 17 is rotated forward by one hundred eighty degrees, the clip handle 17 drives the circular block 11 to rotate through the pull rod 14, the circular block 11 drives the plurality of sharp blocks 13 to rotate, simultaneously the circular block 11 drives the circular base 3 to rotate through the two guide shafts 15, the circular base 3 drives the two cylindrical filter screens 5 to rotate, so that the two cylindrical filter screens 5 form position exchange, namely the cylindrical filter screen 5 on the right side rotates to the left side to continue filtering work, the cylindrical filter screen 5 on the left side rotates to the lower side of the cleaning outlet 7, the pulling force on the clip handle 17 is released, at the moment, the elastic force of the compression spring 16 in a compression state drives the plurality of sharp blocks 13 to be tightly extruded with the hard anti-skid rubber mat 12 through the pull block 11, under the friction force of the sharp block 13 and the hard anti-skid rubber mat 12, the circular seat 3 is locked and prevented from rotating, the cover plate 8 is turned upwards at the moment, the pull ring 6 positioned at the right side at the moment can be pulled upwards, the pull ring drives the cylindrical filter screen 5 and impurities in the cylindrical filter screen 5 to move out through the corresponding connecting rod, the cylindrical filter screen 5 can be cleaned, after the cleaning is finished, the cylindrical filter screen 5 is placed into the corresponding water through the cleaning outlet 7, the cleaning is finished, when the cylindrical filter screen 5 at the left side needs to be cleaned again, the alternate filtering cleaning can be realized through the same operation steps, the alternate filtering cleaning mode is formed by quickly unlocking and rotating and exchanging the positions of the two cylindrical filter screens 5, the water injection cleaning work is not required to be stopped, and the effect of quickly cleaning and moving out the filtered solid particle impurities without stopping the machine, saving downtime.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A wellhead filter device comprises a circular filter box (1), and is characterized in that: the left side of the top of the circular filter tank (1) is communicated and fixed with a water injection connecting pipe (101), the bottom of the circular filter tank (1) is communicated and fixed with a liquid flow velocity meter (102), and a water outlet of the liquid flow velocity meter (102) is communicated and fixed with a discharge connecting pipe;

a partition plate (2) is horizontally and fixedly installed in the circular filter box (1), a circular seat (3) is in sealing movable contact between the inner wall of the top of the circular filter box (1) and the top of the partition plate (2), two sides of the top of the circular seat (3) are respectively provided with a water through hole (4), the water through hole (4) on the left side is communicated with a water injection connecting pipe (101), and the inner wall of the top of the circular filter box (1) is provided with a cleaning outlet (7) communicated with the water through hole (4) on the right side;

a filtering and slag collecting component which is movably contacted with the top of the partition plate (2) is movably sleeved in the water through hole (4);

two one-way water passing assemblies are fixedly embedded in the top of the partition plate (2), and the tops of the one-way water passing assemblies are communicated with the corresponding water passing holes (4);

the bottom of the circular base (3) is provided with a circular groove (10), an elastic tightening locking assembly is installed in the circular groove (10), the top end of the elastic tightening locking assembly extends to the upper side of the circular filter box (1) and is fixedly connected with a clip-shaped handle (17), the bottom end of the elastic tightening locking assembly is tightly contacted with a hard anti-skid rubber mat (12), and the hard anti-skid rubber mat (12) is fixedly bonded to the top of the partition plate (2);

the right side of the liquid flow velocity meter (102) is fixed and electrically connected with a controller, and the top of the controller is fixed and electrically connected with an audible and visual alarm (103).

2. A wellhead filtration device as claimed in claim 1, wherein: filter collection sediment subassembly and include that the top is cylindric filter screen (5), connecting rod and pull ring (6) that the opening set up, cylindric filter screen (5) activity cover is established in corresponding limbers (4), the bottom of connecting rod and the bottom inner wall fixed connection of the cylindric filter screen (5) that corresponds, the bottom of pull ring (6) and the top fixed connection of the connecting rod that corresponds, the top movable contact of the bottom of cylindric filter screen (5) and baffle (2).

3. A wellhead filtration device as claimed in claim 2, wherein: the one-way water passing assembly comprises water collecting covers and one-way valves (9), the two water collecting covers are respectively embedded and fixed on two sides of the top of the partition plate (2), the two water collecting covers are respectively communicated with the corresponding water passing holes (4), the bottom ends of the water collecting covers extend to the lower portion of the partition plate (2) and are fixedly communicated with the tops of the corresponding one-way valves (9), and the bottoms of the one-way valves (9) are outlets.

4. A wellhead filtration device as claimed in claim 3, wherein: the elastic tightening locking assembly comprises a circular block (11), a plurality of sharp blocks (13), two guide shafts (15), two compression springs (16) and a pull rod (14), wherein the compression springs (16) and the pull rod (14) are in a compression state, the circular block (11) is slidably sleeved in a circular groove (10), the sharp blocks (13) are fixedly connected to the bottom of the circular block (11) in an annular equidistant mode, the pointed ends of the sharp blocks (13) are in tight extrusion contact with the top of a hard anti-slip rubber pad (12), the top of the circular block (11) is fixedly connected with the bottom ends of the two guide shafts (15), a circular seat (3) is slidably sleeved on the two guide shafts (15), the top end and the bottom end of each compression spring (16) are fixedly connected with the top inner wall of the circular groove (10) and the top of the circular block (11), the compression springs (16) are movably sleeved on the corresponding guide shafts (15), the pull rod (14) is located between the two guide shafts (15) and fixedly connected with the top of the circular block (11), the top of the pull rod (14) extends to the upper portion of a circular filter box (1) and penetrates through hole, the handle (17) is fixedly sleeved on the top of the circular block (11), and the pull rod (14) is arranged in a central through hole, and the pull rod (14) is arranged in a pull rod (14) and a pull rod is arranged in a pull rod penetrating hole.

5. A wellhead filtration device as claimed in claim 1, wherein: the top right side of circular rose box (1) is rotated and is connected with apron (8), and the top left side fixedly connected with of apron (8) pulls the ring, apron (8) are located the top of clearance export (7) and cooperate with clearance export (7).

6. A wellhead filtration device as claimed in claim 1, wherein: the circular filter box (1) is composed of a circular box body with an opening at the bottom and a box cover fixed at the bottom of the circular box body.

7. A wellhead filtration device as claimed in claim 1, wherein: the top and the bottom of circular seat (3) all bond fixedly the elastic sealing cushion, one side that two elastic sealing cushion kept away from each other respectively with the top inner wall of circular rose box (1) and the top in close contact with of baffle (2), two intercommunicating pores that are linked together with limbers (4) that correspond respectively are seted up to the top of elastic sealing cushion.

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