CN220237985U

CN220237985U - Backwash plastic filter

Info

Publication number: CN220237985U
Application number: CN202321716201.2U
Authority: CN
Inventors: 吴国梁
Original assignee: Zhejiang Leneng Technology Co ltd
Current assignee: Zhejiang Leneng Technology Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-12-26
Anticipated expiration: 2033-07-03

Abstract

The utility model provides a backwashing plastic filter, which comprises a box body and a box cover buckled with the box body, wherein a cavity is formed between the box body and the box cover; the inside of the cavity is provided with a filter screen plate, and the filter screen plate divides the cavity into a discharging cavity close to the box body and a feeding cavity close to the box cover; the lateral part of box is provided with actuating mechanism, and actuating mechanism is used for driving the filter screen plate circumference to rotate, and the box is close to case lid department and has been seted up the row miscellaneous chamber of advancing, and the mounting hole has been seted up to the lateral part of box, and the recoil export of intercommunication row miscellaneous chamber of advancing is seted up to the hole wall department of mounting hole, is provided with back flush mechanism in the mounting hole, and the case lid is close to the box department and has been seted up row miscellaneous chamber, and the row miscellaneous mouth has been seted up to the lateral part of case lid, and row miscellaneous mouth is linked together with row miscellaneous chamber. The net plate is impacted by pure molten plastic with a certain pressure so as to achieve the purpose of cleaning the net plate, so that the net plate is not easy to wear, and the net plate can have a longer service life.

Description

Backwash plastic filter

Technical Field

The present utility model relates to a wire mesh-free filter, and in particular to a backwash plastic filter.

Background

Currently, chinese patent publication No. CN210477761U discloses a single-screen-free filter without support plate, comprising a case body, a case cover and a filtering mechanism. An opening is formed in one side, close to the box cover, of the box body, a discharge hole is formed in one side, far away from the box cover, of the box body, and the discharge hole is communicated with the opening. The box cover is buckled with the box body and used for covering the opening. The box body and the box cover are matched to form a cavity. The filtering mechanism comprises a filter plate, a scraper, a rotating shaft and a power motor. The filter plate is arranged inside the cavity and is used for filtering impurities in the molten plastic. The scraper is arranged in the cavity and is attached to the filter plate. The rotary shaft is rotationally connected to the box body, one end of the rotary shaft penetrates through the box body and the filter plate and then is connected with the scraper, the scraper is driven to circumferentially rotate, the other end of the rotary shaft is connected with the power motor, and the power motor is used for driving the rotary shaft to circumferentially rotate.

During the use process of the silk-screen-free filter, the rotation shaft is controlled to rotate by the power motor, so that the scraper is driven to rotate, and impurities attached to the surface of the filter plate are removed. However, in the process of using the scraper to remove the foreign matters, the scraper and the filter plate are abutted against each other and relatively rotated, so that the filter plate is easily worn.

Disclosure of Invention

In view of the above, it is an object of the present utility model to provide a backflushing plastic filter which has the advantage that the filter plates are less prone to wear.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a backwashing plastic filter comprises a box body and a box cover buckled with the box body, wherein a cavity is formed between the box body and the box cover; a filter screen plate is arranged in the cavity, and divides the cavity into a discharging cavity close to the box body and a feeding cavity close to the box cover; a discharge hole is formed in the side part of the box body, and the discharge hole is communicated with the discharge cavity; a feed inlet is formed in the side part of the box cover and is communicated with the feed cavity; the side of box is provided with actuating mechanism, actuating mechanism is used for driving the filter screen plate circumference rotates, the box is close to box lid department has been seted up and has been arranged miscellaneous into the chamber, arrange miscellaneous into the chamber with the ejection of compact chamber cuts off, the mounting hole has been seted up to the side of box, the hole wall department of mounting hole has been seted up the intercommunication the recoil export in the chamber is advanced in the row, be provided with back flush mechanism in the mounting hole, back flush mechanism is used for injecting pure molten plastics into through the recoil export in the chamber is advanced in the row, the box lid is close to box department has been seted up and has been arranged miscellaneous out the chamber, arrange miscellaneous chamber with the feeding chamber cuts off, just the trash is arranged out the chamber with the trash is advanced the chamber and is controlled relatively, the trash outlet has been seted up to the side of box lid, trash outlet with trash outlet is linked together.

Through above-mentioned technical scheme, at the in-process that uses above-mentioned no silk screen filter, through actuating mechanism control filter screen plate circumference rotation, each part of filter screen plate like this can all be used to filter the molten plastic that contains impurity, can have longer life and higher filtration efficiency. When the silk-screen-free filter is used for a long time and needs to be cleaned, pure molten plastic is injected into the impurity discharging cavity through the back flushing outlet by the back flushing mechanism, and the pure molten plastic with a certain pressure can impact the filter screen, so that impurities attached to the filter screen fall into the impurity discharging cavity and are finally discharged through the impurity discharging port. The net plate is impacted by pure molten plastic with a certain pressure so as to achieve the purpose of cleaning the net plate, so that the net plate is not easy to wear, and the net plate can have a longer service life.

Preferably, a supporting frame is tightly propped between the box body and the box cover, a connecting hole is formed in the center of the supporting frame, the connecting hole is communicated with the feeding cavity, the discharging cavity, the impurity discharging cavity and the impurity discharging cavity, and the filter screen plate is rotatably arranged in the connecting hole.

Through above-mentioned technical scheme, the support frame can be used for accomodating the filter screen board for the installation of filter screen board is difficult for receiving its thickness's influence. The support frame is supported fixedly by box and case lid, has the comparatively convenient advantage of dismouting.

Preferably, the filter screen plate comprises a filter frame, a plurality of settling grooves are formed in the filter frame, which is close to the box cover, and the settling grooves are uniformly distributed along the circumferential direction of the filter frame, through holes are formed in the bottoms of the settling grooves, the width of each through hole is smaller than that of each settling groove, the filter screen plate further comprises a filter plate arranged in each settling groove, and the edges of the filter plates are in contact with the inner groove wall of each settling groove.

Through above-mentioned technical scheme, the filter plate sets up in the standing groove, has the comparatively convenient advantage of dismouting. Furthermore, when a certain filter piece is damaged, the corresponding filter piece is only required to be taken out and replaced, and the whole filter screen plate is not required to be replaced.

Preferably, the support frame is provided with a storage groove, the storage groove is communicated with the connecting hole, the box body is provided with a rotating hole, and the rotating hole is communicated with the storage groove; the driving mechanism comprises a plurality of transmission teeth fixedly connected to the edge of the filtering frame, a driven wheel rotationally connected to the storage groove and meshed with the transmission teeth, a rotating shaft rotationally connected to the rotating hole and fixedly connected with the driven wheel, a driving wheel positioned on the outer side of the box body and fixedly connected with the rotating shaft, and an executing piece arranged on the outer side of the box body and used for driving the driving wheel to circumferentially rotate.

Through above-mentioned technical scheme, during the use, the executive component drives driving wheel circumferential direction, and the action wheel passes through the axis of rotation and drives from the driving wheel rotation, and from the driving wheel through the driving tooth drive filter screen plate circumferential direction that meshes with it.

Preferably, the driving wheel is a ratchet wheel, the executing piece comprises a rotating seat fixedly connected to the side part of the box body, an executing cylinder rotationally connected to the rotating seat, an extending plate rotationally connected to the end part of a piston rod of the executing cylinder, and a pawl arranged on the side part of the extending plate, a sleeve hole is formed in the extending plate in a penetrating mode, the extending plate is sleeved with the rotating shaft through the sleeve hole, and the pawl abuts against the outer ring of the driving wheel to drive the driving wheel to rotate unidirectionally.

Through the technical scheme, when the piston rod of the execution cylinder stretches out, the extension plate can be driven to rotate, and the extension plate can stir the driving wheel through the pawl. When the piston rod of the execution cylinder is retracted, the extension plate and the pawl can be driven to reversely rotate, the reset is completed, and the driving wheel does not rotate in the process.

Preferably, a back flushing inlet is formed in the inner wall of the mounting hole, the back flushing inlet is communicated with the discharging cavity, and the back flushing mechanism pumps pure molten plastic through the back flushing inlet and discharges the pure molten plastic through a back flushing outlet.

Through the technical scheme, the pure molten plastic can be sucked in through the backflushing inlet and discharged through the backflushing outlet by the backflushing mechanism, so that the pure molten plastic does not need to be additionally collected to be used as a material of the backflushing mechanism, and the running of the backflushing mechanism becomes more convenient and quicker.

Preferably, the back flushing mechanism comprises a back flushing jacket arranged in the mounting hole, a back flushing inner core connected in the back flushing jacket in a sliding manner, and a driving oil cylinder for driving the back flushing inner core to slide, wherein the side part of the back flushing jacket is provided with a feed supplementing opening communicated with the back flushing inlet and a feed supplementing opening communicated with the back flushing outlet in a penetrating manner.

Through the technical scheme, when the driving oil cylinder drives the back flushing inner core to slide towards the outer side of the back flushing outer sleeve, pure molten plastic enters the back flushing outer sleeve through the feed supplement opening. When the driving oil cylinder drives the back flushing inner core to slide towards the inner side of the back flushing outer sleeve, pure molten plastic is discharged through the supply port. The feeding speed of the piston rod of the driving oil cylinder is controlled, so that the pressure stirring in the cavity is controlled. When the feeding speed of the driving oil cylinder piston rod is slower, the pressure stirring in the cavity is smaller, and when the feeding speed of the driving oil cylinder piston rod is faster, the pressure stirring in the cavity is larger.

Preferably, the back flushing mechanism further comprises a back flushing positioning frame, the back flushing positioning frame is fixedly connected to the side part of the box body, the end part of the back flushing inner core, which is far away from the back flushing outer sleeve, is slidingly connected to the back flushing positioning frame, and the driving oil cylinder is fixed to the side part of the back flushing positioning frame, which is far away from the box body.

Through the technical scheme, the back flush locating rack can be used for locating and guiding the back flush inner core, so that the back flush inner core is not easy to swing in the sliding process.

Preferably, the box cover is far away from the box body and is provided with a screen changing port, the screen changing port is communicated with the connecting hole, a blocking cover is rotationally arranged on the side part of the box cover and used for covering the screen changing port.

Through above-mentioned technical scheme, only need control keep off the lid and change the net mouth and can expose the filter plate for change the filter plate of damage, make above-mentioned filter have the advantage that does not shut down the net of changing, make above-mentioned filter be difficult for receiving the influence to the filtration efficiency of molten plastics.

Preferably, the blocking cover is provided with an insert facing the screen changing port, and the insert is used for being embedded into the screen changing port.

Through the technical scheme, the embedded block can be abutted against the filter screen plate when being embedded into the screen changing port, so that the storage in the cavity is reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a partial schematic view of an embodiment;

FIG. 3 is an exploded view of one embodiment;

FIG. 4 is a second schematic explosion diagram of an embodiment;

FIG. 5 is a schematic cross-sectional view of a backwash mechanism;

fig. 6 is a schematic cross-sectional view of a filter screen panel.

Reference numerals: 1. a case; 2. a case cover; 3. a cavity; 31. a discharge chamber; 32. a feed chamber; 4. a filter screen plate; 41. a filter frame; 42. a filter sheet; 5. a discharge port; 6. a feed inlet; 7. a driving mechanism; 71. a drive tooth; 72. driven wheel; 73. a rotating shaft; 74. a driving wheel; 75. an actuator; 751. a rotating seat; 752. an execution cylinder; 753. an extension plate; 754. a pawl; 8. discharging impurities into the cavity; 9. a mounting hole; 10. a recoil outlet; 11. a back flushing mechanism; 111. back flushing the outer sleeve; 112. back flushing the inner core; 113. a driving oil cylinder; 114. back flushing a positioning frame; 12. discharging the impurities out of the cavity; 13. a impurity discharging port; 14. a support frame; 15. a connection hole; 16. a placement groove; 17. a through hole; 18. a storage groove; 19. a rotation hole; 20. a socket hole; 21. a recoil inlet; 22. a feed supplement port; 23. a supply port; 24. a screen changing port; 25. a blocking cover; 26. an insert.

Description of the embodiments

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

The back flushing plastic filter comprises a box body 1 and a box cover 2 buckled with the box body 1, wherein a cavity 3 is formed between the box body 1 and the box cover 2, as shown in fig. 1 to 6. Inside the cavity 3 is arranged a screen 4, which screen 4 separates the cavity 3 into a discharge chamber 31 close to the tank 1 and a feed chamber 32 close to the tank cover 2. The lateral part of the box body 1 is provided with a discharge hole 5, and the discharge hole 5 is communicated with a discharge cavity 31. The side of the case cover 2 is provided with a feed inlet 6, and the feed inlet 6 is communicated with a feed chamber 32. In use, molten plastic with impurities is injected into the feed chamber 32 via the feed port 6, and the screen 4 is operable to filter the impurities so that clean molten plastic enters the discharge chamber 31 and is eventually discharged via the discharge port 5.

A supporting frame 14 is abutted between the box body 1 and the box cover 2, a connecting hole 15 is formed in the center of the supporting frame 14, the connecting hole 15 is communicated with a feeding cavity 32, a discharging cavity 31, a impurity discharging inlet cavity 8 and a impurity discharging outlet cavity 12, and the filter screen plate 4 is rotatably arranged in the connecting hole 15.

The filter screen plate 4 comprises a filter frame 41, a plurality of placement grooves 16 are formed in the filter frame 41 near the box cover 2, and the placement grooves 16 are uniformly distributed along the circumferential direction of the filter frame 41. The bottom of each placement groove 16 is provided with a through hole 17, and the width of the through hole 17 is smaller than the width of the placement groove 16. The screen plate 4 further includes a filter sheet 42 disposed in the seating groove 16, and an edge of the filter sheet 42 collides with an inner sidewall of the seating groove 16.

The support frame 14 is provided with a storage groove 18, and the storage groove 18 is communicated with the connecting hole 15. The box body 1 is provided with a rotating hole 19, and the rotating hole 19 is communicated with the containing groove 18. The lateral part of the box 1 is provided with a driving mechanism 7, and the driving mechanism 7 is used for driving the filter screen plate 4 to circumferentially rotate. The driving mechanism 7 includes a plurality of driving teeth 71 fixedly connected to the edge of the filter frame 41, a driven wheel 72 rotatably connected to the receiving groove 18 and engaged with the driving teeth 71, a rotation shaft 73 rotatably connected to the rotation hole 19 and fixedly connected to the driven wheel 72, a driving wheel 74 positioned outside the case 1 and fixedly connected to the rotation shaft 73, and an actuator 75 provided outside the case 1 for driving the driving wheel 74 to rotate circumferentially.

The drive wheel 74 is a ratchet wheel. The executing member 75 comprises a rotating seat 751 fixedly connected to the side portion of the box body 1, an executing cylinder 752 rotatably connected to the rotating seat 751, an extending plate 753 rotatably connected to the end portion of a piston rod of the executing cylinder 752, and a pawl 754 arranged on the side portion of the extending plate 753, a sleeve joint hole 20 is formed in the extending plate 753 in a penetrating mode, the extending plate 753 is sleeved with the rotating shaft 73 through the sleeve joint hole 20, and the pawl 754 abuts against the outer ring of the driving wheel 74 to drive the driving wheel 74 to rotate unidirectionally.

The box body 1 is provided with a trash discharging and feeding cavity 8 near the box cover 2, and the trash discharging and feeding cavity 8 is separated from the discharging cavity 31. The side part of the box body 1 is provided with a mounting hole 9, and the inner hole wall of the mounting hole 9 is provided with a backflushing outlet 10 communicated with the impurity discharging inlet cavity 8 and a backflushing inlet 21 communicated with the discharging cavity 31. A back flushing mechanism 11 is provided in the mounting hole 9, the back flushing mechanism 11 being arranged to draw in pure molten plastic through a back flushing inlet 21 and to discharge it through a back flushing outlet 10. The box cover 2 is provided with a trash discharging cavity 12 near the box body 1, the trash discharging cavity 12 is separated from the feeding cavity 32, and the trash discharging cavity 12 is opposite to the trash discharging inlet cavity 8 in left and right. The side of the case cover 2 is provided with a trash outlet 13, and the trash outlet 13 is communicated with the trash outlet cavity 12.

The back flushing mechanism 11 comprises a back flushing jacket 111 arranged in the mounting hole 9, a back flushing inner core 112 connected in the back flushing jacket 111 in a sliding manner, and a driving oil cylinder 113 for driving the back flushing inner core 112 to slide, wherein the side part of the back flushing jacket 111 is provided with a material supplementing opening 22 communicated with the back flushing inlet 21 and a material supplementing opening 23 communicated with the back flushing outlet 10 in a penetrating manner.

The back flush mechanism 11 further comprises a back flush locating rack 114, the back flush locating rack 114 is fixedly connected to the side part of the box body 1, the end part of the back flush inner core 112, which is far away from the back flush outer sleeve 111, is slidingly connected to the back flush locating rack 114, and the driving oil cylinder 113 is fixed to the side part of the back flush locating rack 114, which is far away from the box body 1.

The box cover 2 is far away from the box body 1 and provided with a screen changing port 24, the screen changing port 24 is communicated with the connecting hole 15, the side part of the box cover 2 is rotatably provided with a blocking cover 25, and the blocking cover 25 is used for covering the screen changing port 24. The baffle cover 25 is provided with an insert 26 towards the screen opening 24, and the insert 26 is used for being embedded into the screen opening 24.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The back flushing plastic filter comprises a box body (1) and a box cover (2) buckled with the box body (1), wherein a cavity (3) is formed between the box body (1) and the box cover (2); a filter screen plate (4) is arranged in the cavity (3), and the filter screen plate (4) divides the cavity (3) into a discharging cavity (31) close to the box body (1) and a feeding cavity (32) close to the box cover (2); a discharge port (5) is formed in the side part of the box body (1), and the discharge port (5) is communicated with the discharge cavity (31); a feed inlet (6) is formed in the side part of the box cover (2), and the feed inlet (6) is communicated with the feed cavity (32); the method is characterized in that: the side of box (1) is provided with actuating mechanism (7), actuating mechanism (7) are used for driving filter screen board (4) circumference rotates, box (1) is close to be seted up row's of impurity into chamber (8) in case lid (2) department, row's of impurity into chamber (8) with discharge cavity (31) cut off, mounting hole (9) have been seted up to the lateral part of box (1), the hole wall department of mounting hole (9) has seted up the intercommunication row's of impurity into chamber (8) recoil export (10), be provided with back flush mechanism (11) in mounting hole (9), back flush mechanism (11) are used for injecting pure molten plastics into row's of impurity into chamber (8) through recoil export (10), case lid (2) are close to row's of impurity into chamber (12) are seted up to be close to in box (1) department, row's of impurity out chamber (12) with feed cavity (32) cuts off, just row's of impurity chamber (12) with row's of impurity chamber (8) back flushing outlet (10), row's of impurity chamber (13) is relative to be equipped with row's of impurity chamber (13) and drain opening (13).

2. A backflushing plastic filter according to claim 1, wherein: the novel filter screen comprises a box body (1) and a box cover (2), wherein a supporting frame (14) is tightly propped between the box body (1) and the box cover (2), a connecting hole (15) is formed in the center of the supporting frame (14), the connecting hole (15) is communicated with a feeding cavity (32), a discharging cavity (31), a impurity discharging inlet cavity (8) and a impurity discharging outlet cavity (12), and the filter screen plate (4) is rotatably arranged in the connecting hole (15).

3. A backflushing plastic filter according to claim 2, wherein: the filter screen plate (4) comprises a filter frame (41), a plurality of settling grooves (16) are formed in the position, close to the box cover (2), of the filter frame (41), the settling grooves (16) are uniformly distributed along the circumference of the filter frame (41), through holes (17) are formed in the bottoms of the settling grooves (16), the width of each through hole (17) is smaller than that of the settling groove (16), the filter screen plate (4) further comprises a filter plate (42) arranged in the settling groove (16), and the edges of the filter plate (42) are in conflict with the inner groove walls of the settling grooves (16).

4. A backflushing plastic filter according to claim 3 wherein: a storage groove (18) is formed in the support frame (14), the storage groove (18) is communicated with the connecting hole (15), a rotating hole (19) is formed in the box body (1), and the rotating hole (19) is communicated with the storage groove (18); the driving mechanism (7) comprises a plurality of transmission teeth (71) fixedly connected to the edge of the filtering frame (41), a driven wheel (72) rotatably connected to the accommodating groove (18) and meshed with the transmission teeth (71), a rotating shaft (73) rotatably connected to the rotating hole (19) and fixedly connected with the driven wheel (72), a driving wheel (74) located on the outer side of the box body (1) and fixedly connected with the rotating shaft (73), and an executing piece (75) arranged on the outer side of the box body (1) and used for driving the driving wheel (74) to circumferentially rotate.

5. A backwashed plastic filter according to claim 4, wherein: the driving wheel (74) is a ratchet wheel, the executing piece (75) comprises a rotating seat (751) fixedly connected to the side portion of the box body (1), an executing cylinder (752) rotatably connected to the rotating seat (751), an extending plate (753) rotatably connected to the end portion of a piston rod of the executing cylinder (752), and a pawl (754) arranged on the side portion of the extending plate (753), a sleeving hole (20) is formed in the extending plate (753) in a penetrating mode, the extending plate (753) is sleeved with the rotating shaft (73) through the sleeving hole (20), and the pawl (754) abuts against the outer ring of the driving wheel (74) to drive the driving wheel (74) to rotate unidirectionally.

6. A backflushing plastic filter according to claim 1, wherein: the inner wall of the mounting hole (9) is provided with a backflushing inlet (21), the backflushing inlet (21) is communicated with the discharging cavity (31), and the backflushing mechanism (11) pumps pure molten plastic through the backflushing inlet (21) and discharges the pure molten plastic through the backflushing outlet (10).

7. A backwashed plastic filter according to claim 6, wherein: the back flushing mechanism (11) comprises a back flushing jacket (111) arranged in the mounting hole (9), a back flushing inner core (112) connected in the back flushing jacket (111) in a sliding mode, and a driving oil cylinder (113) used for driving the back flushing inner core (112) to slide, wherein a feeding port (22) communicated with the back flushing inlet (21) and a feeding port (23) communicated with the back flushing outlet (10) are arranged on the side portion of the back flushing jacket (111) in a penetrating mode.

8. A backwashed plastic filter according to claim 7, wherein: the back flush mechanism (11) further comprises a back flush locating rack (114), the back flush locating rack (114) is fixedly connected to the side part of the box body (1), the end part, far away from the back flush outer sleeve (111), of the back flush inner core (112) is connected in the back flush locating rack (114) in a sliding mode, and the driving oil cylinder (113) is fixed to the side part, far away from the box body (1), of the back flush locating rack (114).

9. A backflushing plastic filter according to claim 2, wherein: the box cover (2) is far away from the box body (1) and is provided with a screen changing port (24), the screen changing port (24) is communicated with the connecting hole (15), a blocking cover (25) is rotatably arranged on the side portion of the box cover (2), and the blocking cover (25) is used for covering the screen changing port (24).

10. A backwashed plastic filter according to claim 9, wherein: the blocking cover (25) is provided with an embedded block (26) towards the screen changing port (24), and the embedded block (26) is used for being embedded into the screen changing port (24).