CN112755638A

CN112755638A - Reciprocating type cyclone sand filtering device

Info

Publication number: CN112755638A
Application number: CN202011619216.8A
Authority: CN
Inventors: 邢雷; 赵立新; 蒋明虎; 刘海龙; 韩国鑫; 王思淇
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-07
Anticipated expiration: 2040-12-30
Also published as: CN112755638B

Abstract

A reciprocating type cyclone separator sand filtering device is used for fully separating sand phases in the cyclone separation process. The device comprises a cyclone separator main body, a reciprocating rotary cam filtering mechanism, a rotary sealing mechanism and a reciprocating anti-clogging filtering mechanism, wherein an oil-water-sand mixed solution tangentially enters the cyclone through an inflow port, the mixed solution flows through a spiral flow channel to generate strong cyclone so that a light oil phase becomes spirally-raised inner layer cyclone and is discharged from an overflow port, a water phase is thrown to the inner wall of the cyclone pipe under the action of centrifugal force and is spirally discharged from a bottom flow port, meanwhile, the water phase is filtered by a reciprocating anti-clogging filtering device arranged in the underflow pipe, heavy sand phase particles are thrown to the wall of the tee pipe under the action of inertial centrifugal force, the thickening liquid discharged from the sand outlet flows through the tee pipe, the thickening liquid flowing through the tee pipe filters the water phase by a reciprocating rotating cam filtering mechanism and discharges the sand phase, and a rotary sealing device arranged on the tee pipe is responsible for controlling the opening and closing of two outlets of the tee pipe in the filtering process. The sand filtering device of the cyclone separator can realize the separation of a water phase, an oil phase and a sand phase and carry out full desanding.

Description

Reciprocating type cyclone sand filtering device

Technical Field

The invention relates to a sand filtering device of a solid-liquid cyclone separator, which is applied to the fields of petrochemical industry, water treatment and environmental protection.

Background

Along with the continuous deep exploitation of oil fields in China, the water content of produced liquid is gradually increased, and the sand carrying capacity of the produced liquid is also increased. The increasing sand content of produced fluids poses a series of hazards to crude oil gathering and transportation systems. The sand accumulated in the oil collecting pipeline reduces the overflowing area and increases the friction, so that the pipeline is cracked and scrapped; damage of the valve and failure of the instrument; the sand settling speed inside the separator, the large tank and other equipment is slow due to natural sand settling, the effective volume of the equipment is reduced due to sand accumulation, and the use efficiency is low; the separator and the large tank stop producing and cleaning sand regularly, the time is long, the cost is high, and the large tank is harmful to human bodies; therefore, the sand removal of the crude oil is urgent. The device designed by the invention can realize the separation of oil phase, water phase and sand phase, and further treat the sand phase to realize full desanding so as to carry out subsequent process treatment. The problem of sand content of produced liquid is solved well, and normal operation of production is guaranteed.

Disclosure of Invention

The invention provides a reciprocating type cyclone separator sand filtering device which realizes the preliminary separation of a light oil phase, a water phase and a heavy sand phase according to the density difference among phases, and finally realizes the full separation of the sand phase through a reciprocating rotating cam filtering mechanism and a reciprocating type anti-clogging filtering mechanism, and has stronger capacity of separating media of all phases.

The technical scheme of the invention is as follows: the reciprocating type cyclone separator sand filtering device is provided with a cyclone separator main body, a reciprocating rotary cam filtering mechanism, a rotary sealing mechanism and a reciprocating type anti-blocking filtering mechanism.

The cyclone separator main body comprises an outer sleeve, a liquid inlet, a sand bag, a sand outlet, an end cover, an overflow port, a spiral flow passage, a bottom flow port and a three-way pipe fitting, wherein the outer sleeve is divided into a cylindrical shape with different diameters at two ends and variable diameters at the middle section, threads are arranged on the inner walls of two end faces, the liquid inlet is tangentially connected with a cylinder of the cyclone, the sand bag is connected with the sand outlet on the side surface of the bottom of the cylinder, the end cover is connected with the top of the outer sleeve by threads, the overflow port is connected with the end cover by threads, the spiral flow passage and the overflow port are of an integrated structure, the bottom flow port is connected with the bottom of the outer sleeve by threads.

The reciprocating rotary cam filtering mechanism comprises a screen body, an inner groove cylindrical cam, a rotary rod piece, an inner groove cam driven piece, an inner groove cam rack, a connecting sleeve, an outer groove cylindrical cam, an elastic retainer ring, an outer groove cam shaft, a feeding rod piece, an outer groove cam driven piece, an outer groove cam rack, a coupler, a motor and a motor rack. The screen body is in threaded connection with a rotary rod piece, the rotary rod piece is in threaded connection with an inner groove cam follower, the inner groove cam follower can drive the rotary rod piece to rotate in an inner groove cylindrical cam, the convex part at the bottom of the inner groove cylindrical cam is matched and connected with the groove part of the inner groove cam frame, the rotary rod piece and the feeding rod piece are connected through a connecting sleeve and can realize relative rotation, the outer groove cam follower is connected with the feed rod piece through a positioning pin, the outer groove cylindrical cam is arranged on the outer groove cylindrical cam frame through an outer groove cam shaft, the axial positioning of the outer groove camshaft is realized through the shaft shoulder and the elastic retainer ring, the circumferential positioning is carried out through the spline, the outer groove cam shaft is connected with the motor through the coupler, the motor is fixed on the motor frame through bolts, and the motor can drive the outer groove cylindrical cam to rotate and realize the reciprocating feeding motion of the feeding rod piece.

The rotary sealing mechanism comprises a spring sleeve, a spring sleeve boss, a torsion spring, an upper sealing disc positioning pin, a lower sealing disc boss and a connecting bolt. The spring sleeve passes through bolted connection on last sealed dish, it installs on the tee bend pipe inner wall through last sealed dish locating pin to go up the sealed dish, torsion spring installs in the spring sleeve, sealed connecting bolt passes through threaded connection with the spring sleeve, and will go up the sealed dish laminating together, torsion spring passes through the inside spring sleeve boss of spring sleeve and seals the dish boss realization location under inside with down, the relative rotation of sealed dish about can realizing when applying the effort, the resilience realization automatic re-setting of sealed dish accessible torsion spring about when not applying the effort.

The reciprocating anti-blocking filtering mechanism comprises a left crank shaft, a right crank shaft, a planar hand wheel, a crank connecting rod, a piston pin, a piston sealing ring and a filtering piston. Left crank and right crank are in the same place with crank threaded connection respectively, crank connecting rod one end and crank bolted connection, the piston pin links with the crank and filters the piston and carry out the hole fit and accomplish and be connected, the piston pin is connected with filtering piston interference fit, the piston lateral wall is equipped with the piston seal ring, filter the anterior filter screen of piston and can filter the sand phase, when sand phase piles up too much and appears blockking up, can shake the reciprocating motion that the piston was realized to the plane hand wheel, and then push the sand phase that blocks up to the whirl intracavity and filter again.

The invention has the following beneficial effects: the device utilizes the density difference among phases to carry out cyclone separation, can realize the separation of oil phase, water phase and sand phase, the oil-water-sand mixed solution enters a cyclone tangentially through a liquid inlet, the mixed solution flows through a spiral runner to generate strong cyclone so that the light oil phase becomes spiral rising inner layer cyclone and is discharged from an overflow port, heavy phase water in the oil-water mixed solution is thrown to the inner wall of a cyclone pipe under the action of strong centrifugal force and is discharged from a bottom flow port in a spiral state, sand phase particles are thrown to the wall of the device under the action of inertial centrifugal force, thickened liquid discharged from a sand outlet flows through a tee joint, a motor drives a reciprocating rotating cam filtering mechanism to carry out sand filtering work, and the sand phase treatment capacity in unit time can be changed by controlling the rotating speed of the motor according to the flow rate of the sand; when the sand filtering work on the two sides of the three-way piece is carried out alternately, the rotary sealing mechanism can realize the alternate sealing function. In addition, the reciprocating anti-blocking filtering mechanism at the underflow port can also filter sand phases, and when the sand phases are accumulated too much and are blocked, the planar hand wheel can be shaken to realize the reciprocating motion of the piston, so that the blocked sand phases are pushed to the cyclone cavity to be filtered again. Therefore, the smooth filtering is ensured, and the efficiency is improved.

The following is a detailed description:

firstly, the reciprocating type cyclone separator sand filtering device is attractive in appearance structure and innovative in functional practicability, and separation of an oil phase, a water phase and a sand phase can be realized by performing cyclone separation by using density differences among phases, so that full desanding is realized.

Secondly, the sand filtering device of the reciprocating cyclone separator has reasonable structural layout, convenient operation, simpler maintenance and repair, simple control unit structure and stable function, the inner groove cylindrical cam can realize the back and forth reciprocating motion of the feeding rod piece,

the outer groove cylindrical cam can realize the rotary motion of the rotary rod piece, and two groups of cams are innovatively combined for use, so that the rotary feeding motion of the screen body is realized.

Thirdly, the screen body is matched with the rotary sealing mechanism, when the screen body completely leaves the three-way pipe fitting, the rotary sealing mechanism can realize sealing in the three-way pipe fitting, and prevent the sand-water mixed liquid from leaking; meanwhile, the cooperation of the two groups of cams and the rotary sealing mechanism enables the sand removing work to be alternately and orderly carried out.

Then, the motor drives the reciprocating rotary cam filtering mechanism to filter sand, the operation is stable, the rotating speed of the motor can be freely adjusted according to the flow of the sand outlet, the sand treatment capacity in unit time is adjusted, and the high separation efficiency and the high applicability are still maintained under the working conditions with different sand contents.

And finally, when the sand phase at the underflow port is accumulated, the planar hand wheel can be shaken to realize the reciprocating motion of the piston, so that the blocked sand phase is pushed into the cyclone cavity to be filtered again, part of fine sand phase is prevented from being discharged from the underflow port, and the separation purity is greatly improved.

In conclusion, the reciprocating type cyclone separator sand filtering device provided by the invention can realize the separation of oil phase, water phase and sand phase mixed liquid, particularly realize the full separation of sand phase, innovatively utilize two groups of cylindrical cam mechanisms to realize the feeding and rotating motion of the screen body, and pour and discharge the filtered sand phase and recover the sand phase in a centralized manner; the rotary sealing mechanism can realize automatic closing when the screen body filter screen leaves the three-way pipe fitting, and when the screen body returns, the rotary opening of the upper sealing disc and the lower sealing disc of the sealing body is realized, and the leakage of the sand water thickening liquid is effectively reduced. The reciprocating anti-blocking filtering mechanism at the underflow opening also has the function of filtering sand phases, when the underflow pipe sand phases are stacked too much and are blocked, the reciprocating motion of the piston can be realized by shaking the planar hand wheel, and then the blocked sand phases are pushed into the cyclone cavity for re-filtering, so that the smooth operation of filtering is ensured. The device has wide application and can be applied to the fields of petrochemical industry, water treatment, environmental protection and the like.

Description of the drawings:

FIG. 1 is an overall appearance view of a sand filtering device of a reciprocating cyclone separator.

Fig. 2 is an exploded view of a sand filtering device of the reciprocating cyclone separator.

Fig. 3 is an assembly view of the cyclone body.

Fig. 4 is an exploded view of the cyclone body assembly.

FIG. 5 is a cross-sectional view of the cyclone body.

FIG. 6 is an external view of a tee.

FIG. 7 is an external view of a reciprocating cam filter assembly.

Figure 8 is an exploded view of a reciprocating cam filter mechanism assembly.

Figure 9 is a cross-sectional view of the assembly at the forward end of the reciprocating cam filter mechanism.

Figure 10 is an external view of an internally grooved cam follower.

Fig. 11 is an external view of an inner groove cylindrical cam.

Fig. 12 is a cross-sectional view of an inner groove cylindrical cam.

Fig. 13 is an assembly view of the rotary rod, the feed rod and the connecting sleeve.

Figure 14 is an assembly view of the middle end of the reciprocating cam filter mechanism.

Fig. 15 is an external view of an external grooved cylindrical cam.

Fig. 16 is an external view of the circlip.

FIG. 17 is an external view of an outer grooved camshaft.

Fig. 18 is an exterior view of an outer groove cam follower.

Figure 19 is an assembly view of the rear end of the reciprocating cam filter mechanism.

Fig. 20 is a schematic diagram of the operation of the reciprocating rotary cam filter mechanism.

Fig. 21 is a view showing the state where the screen body 10 is rotated by 90 °.

Fig. 22 is a view showing the state where the screen body 10 is rotated by 180 °.

Fig. 23 is an overall assembly view of the rotary seal mechanism.

Fig. 24 is an exploded view of the rotary seal mechanism assembly.

Fig. 25 is a sectional view of the rotary seal mechanism.

Fig. 26 is an external view of the spring sleeve.

Fig. 27 is a cross-sectional view of a spring sleeve.

FIG. 28 is an external view of the upper seal disk.

FIG. 29 is an external view of the upper side of the lower seal disk.

Fig. 30 is an external view of the underside of the lower seal disk.

Fig. 31 is an operational schematic diagram of the rotary seal mechanism.

Fig. 32 is an external view of the screen body.

Fig. 33 is a state diagram when the rotary seal mechanism is sealed.

Fig. 34 is a state diagram when the rotary seal mechanism is opened.

FIG. 35 is an assembled view of the reciprocating anti-clog filter mechanism.

FIG. 36 is an exploded view of a reciprocating anti-clog filter mechanism assembly.

FIG. 37 is a schematic view of the assembly of the parts of the reciprocating anti-clogging filter mechanism.

Fig. 38 is an external view of the crank.

FIG. 39 is a view of the reciprocating anti-clogging filter mechanism in its normal operating condition.

FIG. 40 is a diagram of the reciprocating anti-clogging filter mechanism in a state of removing clogged sand phase.

FIG. 41 is an external view of a cyclone holder.

In the figure 1-cyclone separator body, 2-reciprocating rotary cam filter mechanism, 3-rotary seal mechanism, 4-reciprocating anti-clogging filter mechanism, 5-outer sleeve, 501-liquid inlet, 502-sand pack, 503-sand outlet, 6-end cover, 7-overflow port, 701-spiral flow passage, 8-underflow port, 9-tee pipe fitting, 901-positioning hole, 902-slotted hole, 10-sieve body, 1001-boss, 11-inner groove cylindrical cam, 111-inner groove cylindrical cam lug, 12-rotary rod piece, 13-inner groove cam follower, 14-inner groove cam frame, 141-inner groove cam frame groove, 15-connecting sleeve, 16-outer groove cylindrical cam, 17-elastic retainer ring, 18-outer groove camshaft, 19-feed rod, 20-outer groove cam follower, 21-outer groove cam frame, 22-coupler, 23-motor, 24-motor frame, 25-spring sleeve, 2501-spring sleeve boss, 2502-spring sleeve bolt hole, 2503-spring sleeve center hole, 26-torsion spring, 27-upper sealing disc, 2701-upper sealing disc bolt hole, 28-upper sealing disc positioning pin, 29-lower sealing disc, 2901-lower sealing disc groove, 2902-lower sealing disc boss, 30-connecting bolt, 31-left crank shaft, 32-right crank shaft, 33-plane hand wheel, 34-crank, 3401-crank shaft, 35-crank connecting rod, 36-piston pin, 37-piston sealing ring, 38-filter piston, 39-cyclone holder.

The specific implementation mode is as follows:

the invention will be further described with reference to the accompanying drawings in which:

the overall appearance of the sand filtering device of the reciprocating cyclone separator is shown in figure 1, oil-water-sand mixed liquid enters the outer sleeve 5 from the liquid inlet 501 for separation, oil phase is discharged from the overflow port 7, water phase is discharged from the underflow port 8, sand phase flows through the sand bag 502 and is discharged from the sand outlet 503 and flows into the tee pipe fitting 9. An explosion diagram of the sand filtering device of the reciprocating cyclone separator is shown in figure 2 and mainly comprises a cyclone separator body 1, a reciprocating rotating cam filtering mechanism 2, a rotating sealing mechanism 3 and a reciprocating anti-blocking filtering mechanism 4.

Fig. 3 is an assembly view of the cyclone body 1. The cyclone separator body 1 is assembled and exploded as shown in fig. 4, and mainly comprises an outer sleeve 5, an end cover 6, an overflow port 7, a bottom flow port 8 and a tee pipe fitting 9. Fig. 5 is a cross-sectional view of the cyclone body 1, wherein the end cap 6 is screwed to the top of the outer sleeve 5, the overflow port 7 is screwed to the end cap 6, the underflow port 8 is screwed to the bottom of the outer sleeve 5, and the flange of the tee pipe 9 is connected to the flange of the sand outlet 503 by bolts. Fig. 6 is an appearance view of the tee pipe fitting 9, corresponding hole positions on the rotary sealing mechanism 3 are matched with the tee pipe fitting positioning holes 901, the rotary sealing mechanism 3 is fixed on the inner wall of the tee pipe fitting 9 through the positioning pins, and the sieve body 10 is nested on the tee pipe fitting through the slotted holes 902.

Fig. 7 is an external view of an assembly of the reciprocating cam filter mechanism 2. An exploded view of an assembly of the reciprocating cam filtering mechanism 2 is shown in fig. 8, and mainly comprises a screen body 10, an inner groove cylindrical cam 11, a rotary rod 12, an inner groove cam follower 13, an inner groove cam frame 14, a connecting sleeve 15, an outer groove cylindrical cam 16, an elastic retainer ring 17, an outer groove cam shaft 18, a feed rod 19, an outer groove cam follower 20, an outer groove cam frame 21, a coupler 22, a motor 23 and a motor frame 24.

Fig. 9 is a sectional view of an assembly at the front end of a reciprocating cam filter mechanism, in which a screen body 10 is connected to a rotary rod 12 by a screw, an inner groove cam follower 13 is connected to the rotary rod 12 by a screw, an inner groove cylindrical cam 11 is matched with an inner groove cam rack groove 141 of an inner groove cam rack 14 by an inner groove cylindrical cam protrusion 111 to be fixed, the rotary rod 12 can move back and forth in a hole site corresponding to the inner groove cam rack 14, and the inner groove cam follower 13 can guide and drive the rotary rod 12 to rotate through a groove of the inner groove cylindrical cam 11. Fig. 10 is an external view of the inner groove cam follower 13. Fig. 11 is an external view of the inner groove cylindrical cam 11. Fig. 12 is a sectional view of the inner groove cylindrical cam 11, the front end and the rear end of the slideway are both a section of horizontal groove parallel to the axial lead direction, and the middle end is an arc track rotating 180 degrees. The inner groove cam follower 13 moves linearly for a certain distance in the slideway, then rotates for 180 degrees while moving linearly, and finally moves linearly for a certain distance, and the inner groove cam follower 13 can guide along the groove and drive the rotary rod 12 to perform feeding and rotating motion. Fig. 13 is an assembly view of the rotary rod 12, the feeding rod 19 and the connecting sleeves 15, the circular bosses of the rotary rod 12 and the feeding rod 19 are connected together through the upper and lower connecting sleeves 15, the upper and lower connecting sleeves 15 are fixed through bolts, and the rotary rod 12 and the feeding rod 19 can rotate relatively.

Fig. 14 is an assembly view of the middle end of the reciprocating cam filter mechanism, the outer grooved cam shaft 18 is a spline shaft, and is fitted with the inner spline of the outer grooved cylindrical cam 16 and mounted on the outer grooved cam frame 21, the shaft end is axially fixed by the circlip 17, the feed rod 19 is mounted on the outer grooved cam frame 21, the outer grooved cam follower 20 is fixed with the feed rod 19 by screws and is fitted with the groove of the outer grooved cylindrical cam 16, and the cam rotates to realize the back-and-forth reciprocating motion of the feed rod 19. Fig. 15 is an external view of the outer grooved cylindrical cam 16, which is combined with the external view of the outer grooved cylindrical cam 16 of fig. 14, and the outer surface of the outer grooved cylindrical cam is provided with a slideway connected end to end, one side of the slideway is in a semicircular groove shape, and the other side of the slideway is in a sine distribution curve groove shape. Fig. 16 is an external view of the circlip 17. Fig. 17 is an external view of the outer grooved camshaft 18. Fig. 18 is an external view of the outer groove cam follower 20.

Fig. 19 is an assembly view of the rear end of the reciprocating cam filter mechanism, both sides of the coupling 22 are respectively connected with the outer groove cam shaft 18 and the output shaft of the motor 23 by flat keys, and the motor 23 is fixed on the motor frame 24 by bolts.

Fig. 20 is a schematic diagram of the operation of the reciprocating rotary cam filter mechanism 2, as shown in the figure, the motor 23 rotates to drive the outer grooved cylindrical cam 16 to rotate, and the outer grooved cam follower 20 moves in the groove of the outer grooved cylindrical cam 16 to realize the back-and-forth movement of the feed rod 19, during the forward movement, the inner grooved cam follower 13 matches with the groove of the inner grooved cylindrical cam 11 and drives the rotary rod 12 to rotate, the rotary rod 12 drives the screens 10 to move forward and rotate, and pour out the sand, when one of the screens 10 is separated from the tee pipe 9 to perform sand discharge, the other screen 10 is in the inner filtering sand phase of the tee pipe 9, and the two screens work cooperatively to complete the separation and discharge of the sand phase. Fig. 21 is a diagram of the screen 10 rotated by 90 °, wherein the right outer groove cam follower 20 is at the middle point of the outer groove cylindrical cam 16, the right screen 10 moves forward and rotates by 90 °, the left outer groove cam follower 20 is at the stop position, and the left screen 10 is kept in the tee pipe 9 in a stationary state and continuously performs the sand filtering operation. Fig. 22 is a diagram of the screen 10 rotated 180 degrees, when the right outer groove cam follower 20 is at the top of the outer groove cylindrical cam 16, the right screen 10 is moving forward and rotated 180 degrees, the sand phase filtered by the screen 10 is dumped and collected, the left outer groove cam follower 20 is at the stop position, and the left screen 10 is maintained in the tee pipe 9 in a static state and continuously performs the sand filtering operation.

Fig. 23 is an overall assembly view of the rotary seal mechanism 3. Fig. 24 is an exploded view of the assembly of the rotary seal mechanism 3, which is mainly composed of a spring sleeve 25, a torsion spring 26, an upper seal disk 27, an upper seal disk positioning pin 28, a lower seal disk 29, and a connecting bolt 30. The cross-sectional view of the rotary sealing mechanism 3 is shown in fig. 25, a spring sleeve bolt hole 2502 is matched with an upper sealing disc bolt hole 2701 (detailed in fig. 28), a spring sleeve 25 is fixed with an upper sealing disc 27 through bolt connection, an upper sealing disc positioning pin 28 fixes the upper sealing disc 27 on the inner wall of the tee pipe fitting 9, a connecting bolt 30 is in threaded connection with a spring sleeve central hole 2503 (detailed in fig. 26) in the spring sleeve 25, a torsion spring 26 is installed in the spring sleeve 25, a spring sleeve boss 2501 (detailed in fig. 26) in the spring sleeve 25 and a lower sealing disc boss 2902 (detailed in fig. 29) in the lower sealing disc 29 respectively abut against the upper end and the lower end of the torsion spring 26, the upper sealing disc and the lower sealing disc can realize relative rotation under the action of external force, when no external force is applied, the torsion spring 26 is elastically restored to deform by itself, and the reaction force is applied to, thereby driving the lower sealing disc 29 to rotate to realize the automatic resetting of the two sealing discs.

Fig. 26 is an external view of the spring sleeve 25. Fig. 27 is a cross-sectional view of the spring sleeve 25. Fig. 28 is an external view of the upper seal disk 27. Fig. 29 is an external view of the upper side of lower seal disk 29, and fig. 30 is an external view of the lower side of lower seal disk 29. Fig. 31 is a schematic diagram of the operation of the rotary seal mechanism 3, in which the upper part of the diagram is an open state of the rotary seal mechanism 3, and the lower part of the diagram is a closed state of the rotary seal mechanism 3, when the screen body 10 moves forward, the boss 1001 (see fig. 32 in detail) on the screen body 10 leaves the groove 2901 (see fig. 30 in detail) on the lower side surface of the lower seal disk 29, and at this time, the torsion spring 26 recovers its shape to rotate the lower seal disk 29, and at this time, the hole positions of the upper and lower seal disks are staggered to realize sealing, and at this time; when the sieve body 10 returns to the tee fitting again, the boss 1001 on the sieve body 10 abuts against the lower sealing disc groove 2901 on the lower side surface of the lower sealing disc 29, so that the lower sealing disc 29 rotates and compresses the torsion spring 26, and the hole positions of the upper sealing disc and the lower sealing disc are overlapped to realize opening, namely an opening state. Fig. 32 is an external view of the screen body 10. Fig. 33 is a state diagram when the rotary seal mechanism 3 is sealed, in which neither the sand phase nor the water phase flows, and fig. 34 is a state diagram when the rotary seal mechanism 3 is opened, in which both the sand phase and the water phase flow.

FIG. 35 is an assembled view of the reciprocating anti-clog filter mechanism 4 as a whole, with the reciprocating anti-clog filter mechanism 4 mounted inside the underflow opening 8 by the left and

right crankshafts

31 and 32. FIG. 36 is an exploded view of the reciprocating anti-clog filter mechanism 4 assembly. Mainly comprises a left crank shaft 31, a right crank shaft 32, a plane hand wheel 33, a crank 34, a crank connecting rod 35, a piston pin 36, a piston sealing ring 37 and a filter piston 38. FIG. 37 is an assembly view of the parts of the reciprocating anti-clogging filter mechanism 4, wherein the left crank shaft 31 and the right crank shaft 32 are respectively in threaded connection with the crank 34, the tail of the crank connecting rod 35 is bolted on the crank shaft 3401 (see FIG. 38 in detail), the top hole of the crank connecting rod 35 is in fit connection with the hole of the piston pin 36, the piston pin 36 is in interference fit connection with the hole of the tail end of the filter piston 38, the piston sealing ring 37 is sleeved in the corresponding annular groove of the piston 38, and the flat handwheel 33 is in fit connection with the right crank shaft 32 through a. During operation, the filter screen at the front end of the filtering piston 38 can filter a small amount of sand phase flowing through the underflow port, so that a water phase flows out, when the underflow port 8 is blocked due to excessive accumulation of the sand phase, the planar hand wheel 33 is shaken to realize the reciprocating motion of the filtering piston 38, and then the blocked sand phase is pushed into the cyclone cavity to be filtered again. Fig. 38 is an external view of the crank 34. FIG. 39 is a view of the reciprocating anti-clogging filter mechanism 4 in its normal operating condition. FIG. 40 is a view of the reciprocating anti-clogging filter mechanism 4 in a state of removing clogged sand phase. Fig. 41 shows an external view of the cyclone holder 39, the outer sleeve 5 of the cyclone being positioned on the cyclone holder 39 by clamping by means of a clip.

The reciprocating type cyclone separator sand filtering device provided by the invention can realize the separation of oil phase, water phase and sand phase mixed liquid, particularly realize the full separation of sand phase, innovatively utilize two groups of cylindrical cam mechanisms to realize the feeding and rotating motion of a screen body, and pour and discharge the filtered sand phase and recover the sand phase in a centralized manner; the rotary sealing mechanism can realize automatic closing when the screen body filter screen leaves the three-way pipe fitting, and when the screen body returns, the rotary closing of the upper sealing disc and the lower sealing disc of the sealing body is realized, and the leakage of the sand water thickening liquid is effectively prevented. Reciprocating type at overflow gate department prevents blockking up filtering mechanism, also possesses the function of filtering sand phase, when the underflow pipe sand phase piles up too much and appears blockking up, the accessible waves the reciprocating motion that the piston was realized to the plane hand wheel, and then pushes the sand phase of jam to the whirl intracavity and filter again, has guaranteed filterable smooth and easy going on. The device has wide application, can be applied to the fields of petrochemical industry, water treatment, environmental protection and the like, and has strong practical value.

Claims

1. A reciprocating type cyclone separator sand filtering device comprises a cyclone separator main body (1) and is characterized by further comprising a reciprocating rotary cam filtering mechanism (2), a rotary sealing mechanism (3) and a reciprocating type anti-blocking filtering mechanism (4);

the cyclone separator main body (1) comprises an outer sleeve (5), a liquid inlet (501), a sand bag (502), a sand outlet (503), an end cover (6), an overflow port (7), a spiral flow passage (701), a bottom flow port (8) and a three-way pipe (9); the outer sleeve (5) is in a cylindrical shape with two different end diameters and a variable diameter middle section, threads are formed in the inner walls of two end faces, a liquid inlet (501) is tangentially connected with a cylinder of the cyclone, a sand bag (502) and a sand outlet (503) are connected to the side face of the bottom of the cylinder, an end cover (6) is connected with the top of the outer sleeve (5) through threads, an overflow port (7) is connected with the end cover (6) through threads, a spiral flow passage (701) and the overflow port (7) are of an integrated structure, a underflow port (8) is connected with the bottom of the outer sleeve (5) through threads, and a three-way pipe (9) is connected with a flange at the sand outlet (503) through bolts;

the reciprocating rotary cam filtering mechanism (2) comprises a screen body (10), an inner groove cylindrical cam (11), a rotary rod piece (12), an inner groove cam driven piece (13), an inner groove cam frame (14), a connecting sleeve (15), an outer groove cylindrical cam (16), an elastic retainer ring (17), an outer groove cam shaft (18), a feeding rod piece (19), an outer groove cam driven piece (20), an outer groove cam frame (21), a coupler (22), a motor (23) and a motor frame (24); the screen body (10) is in threaded connection with a rotary rod piece (12), the rotary rod piece (12) is in threaded connection with an inner groove cam driven piece (13), the inner groove cam driven piece (13) can drive the rotary rod piece (12) to rotate in an inner groove cylindrical cam (11), a protruding part at the bottom of the inner groove cylindrical cam (11) is matched and connected with a groove part of an inner groove cam rack (14), the rotary rod piece (12) is connected with a feed rod piece (19) through a connecting sleeve (15) and can rotate relatively, an outer groove cam driven piece (20) is connected with the feed rod piece (19) through a positioning pin, an outer groove cylindrical cam (16) is installed on an outer groove cylindrical cam rack (21) through an outer groove cam shaft (18), axial positioning of the outer groove cam shaft (18) is realized through a shaft shoulder and an elastic retainer ring (17), and circumferential positioning is carried out through a spline, the outer groove cam shaft (18) is connected with a motor (23) through a coupler (22), the motor (23) is fixed on a motor rack (24) through bolts, and the motor (23) rotates to drive the outer groove cylindrical cam (16) to rotate and realize the reciprocating feeding motion of the feeding rod piece (19);

the rotary sealing mechanism (3) comprises a spring sleeve (25), a torsion spring (26), an upper sealing disc (27), an upper sealing disc positioning pin (28), a lower sealing disc (29) and a connecting bolt (30); the spring sleeve (25) is connected to the upper sealing disc (27) through a bolt, the upper sealing disc (27) is installed on the inner wall of the three-way pipe fitting through an upper sealing disc positioning pin (28), the torsion spring (26) is installed in the spring sleeve (25), the sealing connection bolt (30) is in threaded connection with the spring sleeve (25) and adheres the upper sealing disc and the lower sealing disc together, the torsion spring (26) is positioned through a spring sleeve boss (2501) inside the spring sleeve (25) and a lower sealing disc boss (2902) inside the lower sealing disc (29), the upper sealing disc and the lower sealing disc can rotate relative to each other when acting force is applied, and the upper sealing disc and the lower sealing disc can automatically reset through resilience of the torsion spring (26) when acting force is not applied;

the reciprocating type anti-blocking filtering mechanism (4) comprises a left crank shaft (31), a right crank shaft (32), a plane hand wheel (33), a crank (34), a crank connecting rod (35), a piston pin (36), a piston sealing ring (37) and a filtering piston (38); the left crank shaft (31) and the right crank shaft (32) are respectively connected with a crank (34) in a threaded manner, one end of a crank connecting rod (35) is connected with the crank (34) through a bolt, a piston pin (36) is connected with the crank connecting rod (35) and a filtering piston (38) in a hole matching manner, the piston pin (36) is connected with the filtering piston (38) in an interference fit manner, a piston sealing ring (37) is arranged on the side wall of the piston, and a filter screen at the front part of the filtering piston (38) is used for filtering sand phase; a flat hand wheel (33) is used to effect the reciprocating movement of the piston.