Gradient pore size melt filter for non-woven fabric production

Abstract

The present invention relates to the technical field of melt filters, specifically a gradient aperture melt filter for non-woven fabric production, comprising a filter seat, a first connecting cavity and a second connecting cavity provided in the filter seat, a plurality of connecting disks movably connected in the filter seat, a plurality of mounting slots provided in the upper end of the connecting disk, a filtering mechanism movably connected in the mounting slot, the filtering apertures of the filtering mechanisms in the plurality of connecting disks being arranged in a gradient from large to small; by the filtering apertures of the filtering mechanisms in the plurality of connecting disks being arranged in a gradient from large to small, impurities of particles of different sizes are filtered in different filtering mechanisms, and at the same time, when the filtering efficiency of the filtering mechanism is reduced due to blockage, the magnetic detection mechanism will rotate the connecting disk, transfer the new filtering mechanism into the first connecting cavity, and the blocked filtering mechanism will rotate into the second connecting cavity for flipping and flushing, thereby realizing the connected filtration of the melt by the filtering mechanism and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of melt filters, in particular to a gradient pore size melt filter for non-woven fabric production. Background Art

[0002] For example, the Chinese patent with announcement number CN222384272U discloses a melt filter for non-woven fabric production, including a filter barrel, wherein support feet are respectively provided at the four corners of the bottom surface of the filter barrel, an inlet pipe is provided on the left side of the top surface of the filter barrel, and a vacuum pump is provided on the front side of the top surface of the filter barrel.

[0003] However, the above solution has the following shortcomings: in the above patent, when the melt reaches the inside of the filter barrel, the large piston plate performs piston movement driven by the first electric push rod, so that the melt is drawn to the lower end of the filter barrel, allowing the melt to be quickly filtered and reach the outside through the first discharge pipe and the second discharge pipe. However, when the filtration volume is large, impurities of different sizes are all filtered in the same filter, which accelerates the service life of the filter, increases the number of times the filter needs to be replaced or cleaned, and reduces work efficiency. For this reason, we have introduced a gradient aperture melt filter for non-woven fabric production. Summary of the Invention

[0004] The object of the present invention is to provide a gradient pore size melt filter for non-woven fabric production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A gradient aperture melt filter for non-woven fabric production, comprising a filter seat, a first communicating cavity and a second communicating cavity being defined in the filter seat, a plurality of connecting discs being movably connected in the filter seat, a plurality of mounting slots being defined in the connecting discs, a filter mechanism being movably connected in the mounting slots, the filter apertures of the filter mechanisms in the plurality of connecting discs being arranged in a gradient from large to small, a magnetic detection mechanism being provided on the lower side of the filter mechanism, the magnetic detection mechanism being movably connected in the first communicating cavity, and when the filter mechanism is clogged, resulting in reduced filtration efficiency, the magnetic detection mechanism causes the connecting disc to rotate, thereby transferring a new filter mechanism into the first communicating cavity;

[0007] The upper end of the magnetic detection mechanism is fixedly connected to the sliding rod, and the upper end of the sliding rod is slidably connected to the arc-shaped inclined groove, and the arc-shaped inclined groove is opened in the lower end of the filter mechanism. When the connecting disk rotates, the sliding rod will be squeezed and moved downward along the arc-shaped inclined groove, so that the upper end of the magnetic detection mechanism is separated from the lower end of the filter mechanism. One end of the filter mechanism is connected to the positioning and rotating mechanism, and the positioning and rotating mechanism is slidably connected to the T-shaped ring groove, and the T-shaped ring groove is opened in the filter seat. The lower end of the T-shaped ring groove is fixedly connected to two tooth plates. When the connecting disk drives the filter mechanism to rotate, the positioning and rotating mechanism will follow and move. When the positioning and rotating mechanism moves to the position of the tooth plate, the positioning and rotating mechanism will drive the filter mechanism to rotate and flip;

[0008] A liquid guide connection mechanism is provided inside the upper end of the filter seat, the lower end of the liquid guide connection mechanism is communicated with the first communicating cavity, and a spray mechanism is provided at the upper end of the second communicating cavity.

[0009] Preferably, the filtering mechanism includes a connecting ring, which is arranged in a mounting groove, with connecting rods fixedly connected at both ends of the connecting ring, and the connecting rods movably connected in the mounting groove, and a mounting ring movably installed in the connecting ring, and a filter screen is fixedly connected to the inner side of the mounting ring, and a first magnetic block is fixedly connected to the lower end of the filter screen, and a positioning ring is provided on the upper side of the mounting ring, and the positioning ring is movably installed at the upper end of the connecting ring, and the arc-shaped inclined groove is opened at the lower end of the connecting ring.

[0010] Preferably, the magnetic detection mechanism includes a connecting box, in which a first T-shaped rod is movably connected, the upper end of the first T-shaped rod extends out of the connecting box and is fixedly connected to a second magnetic block, the second magnetic block is attracted to the first magnetic block, the lower end of the first T-shaped rod is fixedly connected to a support spring, the lower end of the support spring is fixedly connected to the inner side of the connecting box, a press switch is provided on the inner side of the support spring, and the press switch is fixedly connected to the inner side of the connecting box.

[0011] Preferably, both ends of the connecting box are fixedly connected to a second T-shaped rod, the second T-shaped rod slides in a T-shaped slot at one end away from the connecting box, the T-shaped slot is opened in the first connecting cavity, a connecting spring is fixedly connected in the T-shaped slot, the upper end of the connecting spring is fixedly connected to the lower end of the second T-shaped rod, the upper and lower ends of the second T-shaped rod are fixedly connected to a baffle, the baffle slides in a receiving slot, and the receiving slot is opened in the filter seat.

[0012] Preferably, the positioning rotation mechanism includes a gear, one end of the connecting rod passes through the connecting plate and extends into the T-shaped ring groove, and is fixedly connected to the gear, the gear slides in the T-shaped ring groove, and the gear is fixedly connected to one end away from the connecting rod with two positioning rods, the positioning rods slide in the positioning groove, and the positioning groove is opened in the T-shaped ring groove.

[0013] Preferably, the liquid-conducting connection mechanism includes a connecting tube, which is fixedly connected to the inside of the upper end of the filter seat, and the lower end of the connecting tube is communicated with the connecting cavity, and the connecting cavity is opened in the filter seat. A connecting block is slidably connected in the connecting cavity, and two arc-shaped through grooves are opened on the connecting block. A reset spring is sleeved on the outer side of the connecting block, and the upper end of the reset spring is fixedly connected to the connecting block, and the lower end is fixedly connected to the connecting cavity.

[0014] Preferably, a heating block is fixedly connected to the connecting block, and a plurality of heat-conducting pins are fixedly connected to the connecting block. One end of the heat-conducting pin extends into the arc-shaped through groove, and the other end is connected to the heating block.

[0015] Preferably, the spray mechanism includes a spray head, which is fixedly connected to the upper end of the second connecting cavity. The upper end of the spray head is connected to a liquid guide tube, and the liquid guide tube extends into the external environment away from one end of the spray head. The second connecting cavity is connected to a drain pipe, and the drain pipe is fixedly connected to the filter seat. The drain pipe extends into the external environment away from one end of the second connecting cavity.

[0016] Preferably, the upper end of the connecting disk is fixedly connected to the output end of the transmission motor, the transmission motor is fixedly installed in the filter seat, a number of heating rings are fixedly connected in the filter seat, a number of through cavities are opened in the filter seat, and a movable cover is clamped in the through cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are: by setting the filter apertures of the filter mechanisms in several connecting disks in a gradient from large to small, impurities of particles of different sizes are filtered in different filter mechanisms, thereby realizing gradient filtration of the melt; at the same time, when the filter mechanism is clogged and the filtration efficiency is reduced, the magnetic detection mechanism will rotate the connecting disk, transfer the new filter mechanism into the first connecting cavity, and rotate the clogged filter mechanism into the second connecting cavity for flipping and flushing, thereby realizing the connected filtration of the melt by the filter mechanism and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0020] Figure 3 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0021] Figure 4 For the present invention Figure 1 The enlarged structural diagram at C in the middle;

[0022] Figure 5This is a cross-sectional structural diagram of the connection relationship between the connection box and the second T-bar of the present invention;

[0023] Figure 6 This is a structural diagram of the filter screen of the present invention during the flipping process when it enters the second connecting cavity;

[0024] Figure 7 This is a schematic cross-sectional structural diagram of the position of the second communicating cavity of the present invention;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the filter screen of the present invention in an installed state;

[0026] Figure 9 This is a schematic diagram of the three-dimensional structure of the connection relationship between the filter screen and the connecting plate of the present invention in an exploded state;

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the sprinkler head position of the present invention;

[0028] Figure 11 This is a schematic diagram of the three-dimensional structure of the connection relationship between the connecting ring and the gear of the present invention;

[0029] Figure 12 It is a schematic diagram of the three-dimensional structure of the arc-shaped inclined groove position of the present invention.

[0030] Figure: 1, filter seat; 2, filter screen; 3, connection box; 4, first connecting chamber; 5, heating ring; 6, connecting block; 7, connecting plate; 8, second connecting chamber; 9, through chamber; 10, connecting spring; 11, sprinkler head; 12, transmission motor; 13, first magnetic block; 14, positioning rod; 15, gear; 16, positioning groove; 17, support spring; 18, press switch; 19, first T-bar; 20, second magnetic block; 21, second T-bar Rod; 22. Slide rod; 23. Heating block; 24. Arc-shaped inclined groove; 25. Connecting ring; 26. Connecting rod; 27. Positioning ring; 28. T-slot; 29. Baffle; 30. Storage groove; 31. Movable cover; 32. Liquid guide tube; 33. Drain pipe; 34. Tooth plate; 35. T-ring groove; 36. Mounting groove; 37. Connecting pipe; 38. Arc-shaped groove; 39. Connecting cavity; 40. Mounting ring; 41. Heat transfer needle; 42. Return spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-12, the present invention provides a technical solution:

[0033] Example 1

[0034] A gradient aperture melt filter for non-woven fabric production, comprising a filter seat 1, a first communicating cavity 4 and a second communicating cavity 8 being provided in the filter seat 1, a plurality of connecting discs 7 being movably connected in the filter seat 1, a plurality of mounting slots 36 being provided on the connecting disc 7, a filtering mechanism being movably connected in the mounting slots 36, the filtering apertures of the filtering mechanisms in the plurality of connecting discs 7 being arranged in a gradient from large to small, the melt being coarsely filtered when entering the uppermost filtering mechanism, the middle and lowermost filtering mechanisms being melt-washed and filtered again, a magnetic detection mechanism being provided on the lower side of the filtering mechanism, the magnetic detection mechanism being movably connected in the first communicating cavity 4, and when the filtering efficiency of the filtering mechanism is reduced due to clogging, the magnetic detection mechanism will rotate the connecting disc 7, and transfer a new filtering mechanism into the first communicating cavity 4;

[0035] The upper end of the magnetic detection mechanism is fixedly connected to the slide bar 22, and the upper end of the slide bar 22 is movably connected to a roller. Through the setting of the roller, the slide bar 22 can move along the lower end of the connecting disk 7, and the upper end of the slide bar 22 is slidably connected to the arc-shaped inclined groove 24. The arc-shaped inclined groove 24 is opened in the lower end of the filtering mechanism. The arc-shaped inclined groove 24 is arranged in an arc shape, and a slope is provided inside it. When the connecting disk 7 rotates, the slide bar 22 will be squeezed and moved downward along the arc-shaped inclined groove 24, so that the upper end of the magnetic detection mechanism is separated from the lower end of the filtering mechanism. One end of the filtering mechanism is connected to the positioning and rotating mechanism, and the positioning and rotating mechanism slides in the T-shaped ring groove 35. The T-shaped ring groove 35 is opened in the filter seat 1, and the lower end of the T-shaped ring groove 35 There are two tooth plates 34 fixedly connected to the end. When the connecting disk 7 drives the filter mechanism to rotate, the positioning rotation mechanism will follow and move. When the positioning rotation mechanism moves to the position of the tooth plate 34, the positioning rotation mechanism will drive the filter mechanism to rotate and flip, so that the melt clogged and deposited in the filter mechanism falls into the second connecting cavity 8. A liquid guiding connection mechanism is provided inside the upper end of the filter seat 1. The lower end of the liquid guiding connection mechanism is connected to the first connecting cavity 4. The melt is guided into the filter mechanism for filtration through the liquid guiding connection mechanism. A spray mechanism is provided at the upper end of the second connecting cavity 8. When the clogged filter mechanism is rotated into the second connecting cavity 8 by the connecting disk 7, the spray mechanism will spray water outward to flush the filter mechanism.

[0036] Example 2

[0037] On the basis of Example 1, in order to enable particles of different sizes in the melt to be filtered out separately, the filtering mechanism includes a connecting ring 25, the connecting ring 25 is arranged in the mounting groove 36, and both ends of the connecting ring 25 are fixedly connected to connecting rods 26, and the connecting rods 26 are movably connected to the mounting groove 36. A mounting ring 40 is movably installed in the connecting ring 25, and a filter screen 2 is fixedly connected to the inner side of the mounting ring 40. The material of the filter screen 2 is a high-temperature resistant material, such as polyimide, and the lower end of the filter screen 2 is fixedly connected to the first magnetic block 13. Since the filtering apertures of the three filter screens 2 from top to bottom are arranged in a gradient from large to small, the uppermost filter screen 2 will first coarsely filter the melt, and the two filter screens 2 on the lower side will then finely filter the melt, so that particles of different finenesses are filtered in different filter screens 2, preventing particles of different sizes from being filtered in the same filter screen 2, which will cause rapid clogging of the filter screen 2 when the filtration amount is large;

[0038] A positioning ring 27 is provided on the upper side of the mounting ring 40. The positioning ring 27 is movably mounted on the upper end of the connecting ring 25. The positioning ring 27 is mounted on the upper end of the connecting ring 25 by screws. By removing the positioning ring 27, the mounting ring 40 with the filter 2 installed can be removed and replaced. The arc-shaped inclined groove 24 is provided at the lower end of the connecting ring 25. The rotation of the connecting plate 7 drives the connecting ring 25 to rotate. Since the sliding rod 22 is slidably connected to the arc-shaped inclined groove 24, the sliding rod 22 will be pushed downward by the arc-shaped inclined groove 24 during the rotation of the connecting ring 25.

[0039] The magnetic detection mechanism includes a connection box 3, a first T-shaped rod 19 is movably connected to the connection box 3, the upper end of the first T-shaped rod 19 extends out of the connection box 3 and is fixedly connected to the second magnetic block 20, the second magnetic block 20 is attracted to the first magnetic block 13, the lower end of the first T-shaped rod 19 is fixedly connected to the support spring 17, the lower end of the support spring 17 is fixedly connected to the inner side of the connection box 3, a press switch 18 is provided inside the support spring 17, the press switch 18 is fixedly connected to the inner side of the connection box 3, and the press switch 18 can be adjusted according to the actual usage. When one of the filters 2 is clogged, resulting in reduced filtration efficiency, the melt will accumulate in the filter 2. As the amount of melt accumulation increases, the lower end of the filter 2 will move downward. Since the first magnetic block 13 and the second magnetic block 20 are attracted together, when the lower end of the filter 2 moves downward, the first T-shaped rod 19 will move downward along the connecting box 3. At this time, the support spring 17 is compressed. When the lower end of the first T-shaped rod 19 contacts the press switch 18, the press switch 18 will be pressed.

[0040] Both ends of the connecting box 3 are fixedly connected to the second T-shaped rod 21, and the end of the second T-shaped rod 21 away from the connecting box 3 is slid into the T-shaped slot 28. The T-shaped slot 28 is opened in the first connecting cavity 4. A connecting spring 10 is fixedly connected in the T-shaped slot 28. The upper end of the connecting spring 10 is fixedly connected to the lower end of the second T-shaped rod 21. The upper and lower ends of the second T-shaped rod 21 are fixedly connected to the baffle 29. The baffle 29 is slid into the receiving groove 30. The receiving groove 30 is opened in the filter seat 1. The baffle 29 is slid into the receiving groove 30 so that the melt will not enter the T-shaped slot 28. The sliding rod 22 drives the second T-shaped rod 21 to move. At this time, the connecting box 3 drives the second magnetic block 20 to move downward synchronously. At this time, the second magnetic block 20 is disconnected from the first magnetic block 13;

[0041] The positioning rotation mechanism includes a gear 15, one end of a connecting rod 26 passes through the connecting disk 7 and extends into the T-shaped ring groove 35, and is fixedly connected to the gear 15, the gear 15 is slidably connected to the T-shaped ring groove 35, and the gear 15 is fixedly connected to the two positioning rods 14 away from the end of the connecting rod 26. The positioning rod 14 is slidably connected to the positioning groove 16, and the positioning groove 16 is opened in the T-shaped ring groove 35. When the connecting disk 7 drives the connecting ring 25 to rotate, the connecting rod 26 will drive the gear 15 to move along the T-shaped ring groove 35. When the connecting disk 7 drives the blocked filter screen 2 to enter the second communicating chamber 8, the positioning rod 14 will slide out of the positioning groove 16, and the gear 15 will mesh with the tooth plate 34. As the connecting disk 7 rotates, the gear 15 will rotate along the tooth plate 34. At this time, the connecting ring 25 will be driven to rotate, causing the filter screen 2 to flip over again;

[0042] The liquid guide connection mechanism includes a connecting tube 37, which is fixedly connected to the interior of the upper end of the filter seat 1, and the lower end of the connecting tube 37 is connected to the connecting cavity 39. The connecting cavity 39 is provided in the filter seat 1, and a connecting block 6 is slidably connected in the connecting cavity 39. The connecting block 6 is provided with two arc-shaped through grooves 38. A return spring 42 is sleeved on the outer side of the connecting block 6. The upper end of the return spring 42 is fixedly connected to the connecting block 6, and the lower end is fixedly connected to the connecting cavity 39. The melt is introduced into the connecting tube 37, and the melt entering the connecting tube 37 will push the connecting block 6 to move upward. When the connecting block 6 moves downward, the melt will enter the connecting cavity 39, and the lower end of the connecting block 6 will be clamped together with the mounting ring 40. At this time, the melt will pass through the arc-shaped through groove 38 into the uppermost filter screen 2;

[0043] The connecting block 6 is fixedly connected to the heating block 23. A plurality of heat-conducting needles 41 are fixedly connected to the connecting block 6. One end of the heat-conducting needle 41 extends into the arc-shaped groove 38, and the other end is connected to the heating block 23. The heating block 23 heats the heat-conducting needles 41 to prevent the melt from solidifying in the arc-shaped groove 38 due to cooling. At the same time, the heat-conducting needles 41 can also puncture bubbles in the melt that enters the arc-shaped groove 38.

[0044] The spray mechanism includes a spray head 11, which is fixedly connected to the upper end of the second communicating chamber 8. The upper end of the spray head 11 is connected to a liquid guide tube 32, and the end of the liquid guide tube 32 away from the spray head 11 extends into the external environment. The second communicating chamber 8 is connected to a drain pipe 33, and the drain pipe 33 is fixedly connected to the filter seat 1. The end of the drain pipe 33 away from the second communicating chamber 8 extends into the external environment. The external water source enters the spray head 11 through the liquid guide tube 32. At this time, the spray head 11 sprays water outward to rinse the overturned filter screen 2. After the rinsing is completed, the spray head 11 stops spraying water outward. At the same time, the several heating rings 5 in the filter seat 1 heat the filter seat 1, and the waste water generated by the rinsing will be discharged through the drain pipe 33.

[0045] The upper end of the connecting disk 7 is fixedly connected to the output end of the transmission motor 12, and the transmission motor 12 is fixedly installed in the filter seat 1. When the transmission motor 12 is actually used, the appropriate size and model can be selected. Several heating rings 5 are fixedly connected to the filter seat 1, and several through cavities 9 are opened in the filter seat 1. A movable cover 31 is clamped in the through cavity 9. When the filter screen 2 needs to be replaced, the damaged filter screen 2 can be removed by opening the movable cover 31, and a new filter screen 2 can be installed.

[0046] Working principle: when in use, the melt is introduced into the connecting tube 37. The melt entering the connecting tube 37 will push the connecting block 6 to move upward. When the connecting block 6 moves downward, the melt will enter the connecting cavity 39. At the same time, the lower end of the connecting block 6 will be clamped together with the mounting ring 40. At this time, the melt will pass through the arc-shaped through groove 38 and enter the uppermost filter screen 2. Since the filtration apertures of the three filter screens 2 from top to bottom are set from large to small, the uppermost filter screen 2 will first perform coarse filtration on the melt, and the two filter screens 2 on the lower side will then perform fine filtration on the melt. The melt passes through the three filter screens 2 in sequence and is discharged;

[0047] When one of the filters 2 is clogged, resulting in reduced filtration efficiency, the melt will accumulate in the filter 2. As the amount of melt accumulation increases, the lower end of the filter 2 will move downward. Since the first magnetic block 13 and the second magnetic block 20 are attracted together, when the lower end of the filter 2 moves downward, the first T-shaped rod 19 will move downward along the connecting box 3. At this time, the support spring 17 is compressed. When the lower end of the first T-shaped rod 19 contacts the press switch 18, the press switch 18 will be pressed. After the press switch 18 is pressed, the melt will be controlled to stop entering the connecting pipe 37. At this time, under the elastic force of the return spring 42, the connecting block 6 will move upward, so that its lower end will be disengaged from the mounting ring 40. At the same time, the transmission motor 12 will start and drive the connecting disk 7 to rotate counterclockwise.

[0048] The connection disk 7 rotates and drives the connection ring 25 to rotate. Since the slide bar 22 is slidably connected to the arc-shaped bevel groove 24, the slide bar 22 will be pushed downward by the arc-shaped bevel groove 24 during the rotation of the connection ring 25. The slide bar 22 drives the second T-shaped rod 21 to move. At this time, the connection box 3 drives the second magnetic block 20 to move downward synchronously. At this time, the second magnetic block 20 is disconnected from the first magnetic block 13. At the same time, when the connection disk 7 drives the connection ring 25 to rotate, the connection rod 26 drives the gear 15 to move along the T-shaped ring groove 35. Since the positioning rod 14 is slidably connected to the positioning groove 16, the mounting ring 40 will not rotate or shake during the rotation of the connection disk 7. When the connecting disk 7 drives the clogged filter screen 2 to enter the second communicating chamber 8, the positioning rod 14 will slide out of the positioning groove 16, and the gear 15 will mesh with the tooth plate 34. As the connecting disk 7 rotates, the gear 15 will rotate along the tooth plate 34. At this time, the connecting ring 25 will be driven to rotate, and the filter screen 2 will be flipped over again. The melt blocked in the filter screen 2 will fall down. When the filter screen 2 is flipped over, the gear 15 will leave the surface of the tooth plate 34, and the positioning rod 14 will re-enter the positioning groove 16. When the flipped filter screen 2 moves to the lower side of the spray head 11, the connecting disk 7 stops rotating.

[0049] The external water source enters the spray head 11 through the liquid guide tube 32. At this time, the spray head 11 sprays water outward to rinse the flipped filter 2. After the rinsing is completed, the spray head 11 stops spraying water outward. At the same time, the plurality of heating rings 5 in the filter seat 1 heat the filter seat 1 to prevent the melt from solidifying and also dry the filter 2. When the connecting disk 7 rotates again, the positioning rod 14 will slide out of the positioning groove 16 again, and the gear 15 will contact the tooth plate 34 again. At this time, the rinsed filter 2 will be flipped again, so that the first magnetic block 13 is flipped to the lower side of the filter 2.

[0050] During the rotation of the connecting disk 7, the slide rod will always move along the lower end of the connecting disk 7 and the lower end of the connecting ring 25. When the new filter screen 2 rotates into the first connecting chamber 4, under the elastic force of the connecting spring 10, the upper end of the slide rod 22 will enter the arc-shaped inclined groove 24. At the same time, the connecting box 3 will drive the second magnetic block 20 to move upward and attract the first magnetic block 13. The lower end of the filter screen 2 will be pushed upward a distance. When the filter screen 2 moves downward due to blockage, the press switch 18 will be pressed again, causing the connecting disk 7 to rotate again, completing the switching of the filter screen 2.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gradient pore size melt filter for nonwoven fabric production, comprising a filter seat, characterized in that: A first communicating cavity and a second communicating cavity are provided in the filter seat, a plurality of connecting disks are movably connected in the filter seat, a plurality of mounting slots are provided on the connecting disks, a filtering mechanism is movably connected in the mounting slots, the filtering apertures of the filtering mechanisms in the plurality of connecting disks are arranged in a gradient from large to small, a magnetic detection mechanism is provided on the lower side of the filtering mechanism, the magnetic detection mechanism is movably connected to the first communicating cavity, when the filtering efficiency of the filtering mechanism is reduced due to blockage, the magnetic detection mechanism will cause the connecting disk to rotate, and a new filtering mechanism will be transferred into the first communicating cavity; The upper end of the magnetic detection mechanism is fixedly connected to the sliding rod, and the upper end of the sliding rod is slidably connected to the arc-shaped inclined groove, and the arc-shaped inclined groove is opened in the lower end of the filter mechanism. When the connecting disk rotates, the sliding rod will be squeezed and moved downward along the arc-shaped inclined groove, so that the upper end of the magnetic detection mechanism is separated from the lower end of the filter mechanism. One end of the filter mechanism is connected to the positioning and rotating mechanism, and the positioning and rotating mechanism is slidably connected to the T-shaped ring groove, and the T-shaped ring groove is opened in the filter seat. The lower end of the T-shaped ring groove is fixedly connected to two tooth plates. When the connecting disk drives the filter mechanism to rotate, the positioning and rotating mechanism will follow and move. When the positioning and rotating mechanism moves to the position of the tooth plate, the positioning and rotating mechanism will drive the filter mechanism to rotate and flip; A liquid guide connection mechanism is provided inside the upper end of the filter seat, the lower end of the liquid guide connection mechanism is connected to the first communication cavity, and a spray mechanism is provided at the upper end of the second communication cavity; The filter mechanism includes a connecting ring, the connecting ring is arranged in the installation groove, both ends of the connecting ring are fixedly connected to connecting rods, the connecting rods are movably connected to the installation groove, a mounting ring is movably installed in the connecting ring, the inner side of the mounting ring is fixedly connected to the filter screen, the lower end of the filter screen is fixedly connected to the first magnetic block, a positioning ring is provided on the upper side of the mounting ring, the positioning ring is movably installed on the upper end of the connecting ring, and the arc-shaped inclined groove is opened at the lower end of the connecting ring; The magnetic detection mechanism includes a connection box, a first T-shaped rod movably connected to the connection box, the upper end of the first T-shaped rod extends out of the connection box and is fixedly connected to a second magnetic block, the second magnetic block is attracted to the first magnetic block, the lower end of the first T-shaped rod is fixedly connected to a support spring, the lower end of the support spring is fixedly connected to the inner side of the connection box, a press switch is provided inside the support spring, and the press switch is fixedly connected to the inner side of the connection box; Both ends of the connecting box are fixedly connected to a second T-shaped rod, and the second T-shaped rod slides in a T-shaped slot at one end away from the connecting box. The T-shaped slot is opened in the first connecting cavity. A connecting spring is fixedly connected in the T-shaped slot. The upper end of the connecting spring is fixedly connected to the lower end of the second T-shaped rod. The upper and lower ends of the second T-shaped rod are fixedly connected to a baffle, and the baffle slides in a receiving slot. The receiving slot is opened in the filter seat.

2. The gradient pore size melt filter for nonwoven fabric production according to claim 1, characterized in that: The positioning rotation mechanism includes a gear, one end of the connecting rod passes through the connecting plate and extends into the T-shaped ring groove, and is fixedly connected to the gear, the gear slides in the T-shaped ring groove, and the gear is fixedly connected to two positioning rods at one end away from the connecting rod, the positioning rods slide in the positioning groove, and the positioning groove is opened in the T-shaped ring groove.

3. The gradient pore size melt filter for nonwoven fabric production according to claim 1, characterized in that: The liquid-conducting connection mechanism includes a connecting tube, which is fixedly connected to the inside of the upper end of the filter seat. The lower end of the connecting tube is communicated with a connecting cavity. The connecting cavity is opened in the filter seat. A connecting block is slidably connected in the connecting cavity. Two arc-shaped through grooves are opened on the connecting block. A reset spring is sleeved on the outside of the connecting block. The upper end of the reset spring is fixedly connected to the connecting block, and the lower end is fixedly connected to the connecting cavity.

4. The gradient pore size melt filter for nonwoven fabric production according to claim 3, characterized in that: A heating block is fixedly connected to the connecting block. A plurality of heat-conducting pins are fixedly connected to the connecting block. One end of the heat-conducting pin extends into the arc-shaped through groove, and the other end is connected to the heating block.

5. The gradient pore size melt filter for nonwoven fabric production according to claim 1, characterized in that: The spray mechanism includes a spray head, which is fixedly connected to the upper end of the second connecting cavity. The upper end of the spray head is connected to a liquid guide tube, and the liquid guide tube extends into the external environment at one end away from the spray head. The second connecting cavity is connected to a drain pipe, and the drain pipe is fixedly connected to the filter seat. The drain pipe extends into the external environment at one end away from the second connecting cavity.

6. The gradient pore size melt filter for nonwoven fabric production according to claim 1, characterized in that: The upper end of the connecting disk is fixedly connected to the output end of the transmission motor, and the transmission motor is fixedly installed in the filter seat. Several heating rings are fixedly connected in the filter seat. Several through cavities are opened in the filter seat, and movable covers are clamped in the through cavities.

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