A filtering device and filtering method for hot melt adhesive production

Abstract

The present invention discloses a filtering device for hot melt adhesive production and a filtering method thereof, and specifically relates to the technical field of hot melt adhesive filtering, comprising a filtering tank, a feeding pipe and a discharging pipe, wherein a temperature control switch is installed on the outside of the filtering tank; a filtering component, which is used to fully filter the hot melt adhesive in the filtering tank, and the filtering component comprises a guide ring fixedly connected in the filtering tank, a sleeve ring arranged in the filtering tank, and four fan-shaped filtering screens fixedly connected in the sleeve rings; the present invention can make the hot melt adhesive fall into the surface of the filtering screen in a stepped manner and be collected by arranging a drainage seat, a guide ring, a side toggle plate and a filtering screen in the filtering tank, so that the hot melt adhesive can be more evenly dispersed in the filtering area, so that in the subsequent filtering process, the accumulation of hot melt adhesive on the filtering screen is reduced, which is conducive to the hot melt adhesive being able to fully contact with the filtering screen, so that the filtering screen can more effectively intercept impurities and improve the filtering effect of the hot melt adhesive.

Description

Technical Field

[0001] The invention relates to the technical field of hot melt adhesive filtration, and in particular to a filtration device for hot melt adhesive production and a filtration method thereof. Background Art

[0002] Hot melt adhesive is a plastic adhesive. Its physical state changes with temperature within a certain temperature range, while its chemical properties remain unchanged. It is non-toxic and odorless and is an environmentally friendly chemical product. It is highly favored for its high added value, high bonding strength and fast speed. However, during the production process of hot melt adhesive, the raw materials and additives of hot melt adhesive may contain impurities, such as solid particles, fibers, dust, etc. If the impurities are not removed, adverse effects may be caused in the hot melt adhesive, such as affecting the bonding strength and reducing product quality. Therefore, a filtering device is used in the production process of hot melt adhesive to remove impurities. At the same time, in order to maintain a good flow effect of the hot melt adhesive during filtration, the filtering device is often installed with a constant temperature tube inside it, so as to maintain a suitable flow temperature for the hot melt adhesive. When filtering the hot melt adhesive, a generally linearly moving filter element is used in the filtering device to filter the hot melt adhesive. However, after the hot melt adhesive contacts the linearly moving filter screen, it needs to rely on the hot melt adhesive's own gravity to pass through the filter element. There is a lack of other forces to promote the passage of the material, which causes the hot melt adhesive to easily accumulate on the filter element during filtration, resulting in the material being unable to fully contact the filter screen, resulting in some impurities not being effectively intercepted, affecting the filtering effect of the hot melt adhesive. Summary of the invention

[0003] The object of the present invention is to provide a filtering device and a filtering method for hot melt adhesive production to solve the above-mentioned deficiencies in the technology.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a filtering device for hot melt adhesive production, comprising a filtering tank, a feeding pipe and a discharging pipe, wherein a temperature control switch is installed outside the filtering tank, and the temperature control switch is used to maintain a constant temperature inside the filtering tank;

[0005] A filter assembly is used to fully filter the hot melt adhesive in the filter tank. The filter assembly includes a guide ring fixedly connected to the filter tank, a sleeve ring arranged in the filter tank, and four fan-shaped filter screens fixedly connected to the sleeve ring. The guide ring is ring-shaped and the top is concave inward to form an inclined structure. A drainage seat is fixedly connected to the filter tank. The drainage seat is trapezoidal and the top is surrounded by a downward slope structure. A side toggle plate that cooperates with the filter screen is installed at the bottom end of the drainage seat, and the side toggle plate is used to filter the hot melt adhesive on the filter screen. The motion state is adjusted so that the hot melt adhesive keeps rotating and moving up and down on the filter screen. A central receiving seat for connection is provided between the drainage seat and the collar, and the filter screen is sleeved on the outside of the central receiving seat. An isolation block is fixedly connected between the central receiving seat and the filter screen. An intermittent component matching the central receiving seat and the drainage seat is provided in the filter tank, and the intermittent component is used to drive the collar to intermittently move under the drainage seat to ensure that the hot melt adhesive on the filter screen can fully contact with the side toggle plate. The intermittent component is provided with a The movable assembly cooperates with the side toggle plate, and the movable assembly is used to move the side toggle plate up and down on the surface of the filter screen, and keep the side toggle plate and the rotating isolation block staggered; and the number of isolation blocks is equal to the filter screen, and under the action of the four center receiving seats and the center receiving seats, the four filter screens are kept equally divided in the sleeve ring, and the four filter screens are separated from each other by the four isolation blocks. The setting of the four-divided filter screen can fully adapt to the characteristics of the hot melt adhesive. After equal division, each area of ​​the filter screen can be filtered relatively independently, so that the effective filtering surface of the entire filter screen is The area of ​​the filter can be more fully utilized, and the entire filtering area can be more fully utilized. In addition, the guide ring, the drainage seat and the filter screen are coordinated, and the guide ring contacts the hot melt adhesive in advance, and disperses and guides the hot melt adhesive after contact to the drainage seat and the four filter screens. Then the hot melt adhesive on the drainage seat also slides onto the filter screen, so that the hot melt adhesive falls into the filter screen surface in a step-by-step manner and is collected, which can make the hot melt adhesive more evenly dispersed in the filtering area. In this way, in the subsequent filtering process, the filter screen can more effectively intercept impurities and improve the purity of the hot melt adhesive.

[0006] Preferably, the intermittent component includes a rotating column rotatably installed in the drainage seat and the filter tank, a first gear rotatably connected in the drainage seat, and a receiving cylinder installed in the drainage seat, and the first gear is sleeved on the outside of the rotating column, and the outside of the receiving cylinder is rotatably sleeved with a second gear meshing with the first gear, one end of the second gear is installed with a connecting ring, and one end of the connecting ring extends to the outside of the drainage seat and is fixedly connected with a bent rod, a guide column is installed on the side of the bent rod close to the filter screen, a sliding groove for the guide column to move is opened on one side of the isolation block and the ring, and a servo motor is fixedly connected to the top of the filter tank, and the servo The motor is used to drive the rotating column to rotate, and a limiting component for connection is arranged between the collar and the drainage seat; the collar and the filter can be rotated intermittently in the filter tank, so that the filter can change its position in the filter tank, so that the effective filtering area may be larger at each rotation, thereby improving the filtering effect. At the same time, the rotating filter and the side toggle plate cooperate with each other, so that the hot melt adhesive will not be concentrated in a certain area, and the hot melt adhesive can be evenly distributed on the entire filter surface, so that all parts of the filter can participate in the filtering work, giving full play to the effective filtering area of ​​the filter, thereby improving the overall filtering efficiency.

[0007] Preferably, a fan-shaped contact block is fixedly connected to the outside of the connecting ring, and an outer block matching the fan-shaped contact block is fixedly connected to the side of the ring close to the isolation block, and one side of the outer block is an arc-shaped structure; and one side of the fan-shaped contact block is an arc-shaped structure, so that the fan-shaped contact block and the outer block maintain the arc matching, and when the guide column moves out along the slide groove and approaches one side of the center receiving seat, the fan-shaped contact block at this time contacts the outer block, which is used to maintain a brief friction contact with the ring, avoid the ring from rotating, and ensure that the ring always maintains the same rotation direction.

[0008] Preferably, the limiting assembly includes a limiting plate slidably connected to the top of the drainage seat and a limiting ring sleeved on the outside of the rotating column, and the limiting plate is sleeved on the outside of the rotating column, and the top of the limiting plate is provided with a through groove, and the through groove is used to move the limiting plate left and right along the outside of the rotating column, and the top of the limiting plate is equipped with two symmetrical limiting wheels, and the two limiting wheels are in contact with the outside of the limiting ring, one side of the limiting plate is fixedly connected to a scraper, and the scraper is used to push the hot melt adhesive on the surface of the drainage seat, and the top of the drainage seat is fixedly connected to a limiting plate that cooperates with the limiting plate The cylinder plate; and the limiting cylinder plate is connected to one end of the limiting plate in a movable plug-in manner, so that the limiting plate moves one end of the limiting cylinder plate at the same time when it moves, which is used to position the movement of the limiting plate on the drainage seat to ensure the stable movement of the limiting plate. At the same time, the movement of the limiting plate drives the scraper to move at the same time, which is used to push the hot melt adhesive on the drainage seat, increasing the contact area between the hot melt adhesive and the filter net. They will continuously change the direction of movement as they fall in a step-by-step manner, which gives the hot melt adhesive more opportunities to fully contact the filter net, ensuring that the filter net fully filters the hot melt adhesive.

[0009] Preferably, the shape of the scraper on the side close to the drainage seat is consistent with that of the drainage seat, and the scraper and the drainage seat bracket maintain a stable fit, which can stably push the hot melt adhesive on the drainage seat.

[0010] Preferably, the moving assembly includes a positioning column fixedly connected to one side of the side toggle plate, a centering column installed between the receiving tube and the drainage seat, and a limiting column rotatably connected in the receiving tube, and one end of the centering column extends to the interior of the receiving tube and is fixedly connected to one end of the limiting column, and a support frame for connection is provided between the receiving tube and the drainage seat, one end of the positioning column extends to the interior of the receiving tube and is fixedly connected to a sliding block, one end of the sliding block is provided with a displacement groove for the limiting column to be inserted, and a limiting column is installed on the side of the sliding block close to the limiting column, and a reciprocating guide groove is provided on the outside of the limiting column for the limiting column to move back and forth up and down, and the reciprocating guide groove is formed by a plurality of V-shaped columns connected end to end in series, and a synchronous assembly for connection is provided between the receiving tube and the rotating column; by rotating and toggling the hot melt adhesive up and down, the accumulation layer formed by the hot melt adhesive on the filter net can be broken, so that the hot melt adhesive is more evenly distributed on the filter net, the contact area between the hot melt adhesive and the filter net is increased, and impurities are more easily intercepted by the filter net, thereby improving the filtering effect.

[0011] Preferably, the synchronization component includes a synchronization column connected between the centering column and the drainage seat and a first pulley sleeved on the outside of the rotating column, the outside of the synchronization column is sleeved with a second pulley, and a belt strip is sleeved between the second pulley and the first pulley; it can be used for the synchronous rotation of the centering column and the rotating column, which can reduce unnecessary energy transfer, thereby improving the transmission efficiency of the equipment, thereby reducing the time required for hot melt adhesive filtration, improving the overall operating efficiency, and further enhancing the flexibility of the device.

[0012] A filtering method for a filtering device for hot melt adhesive production, comprising the following steps:

[0013] S1. First, the rotating column drives the synchronous component to rotate at the same time, and then the synchronous component drives the centering column to rotate at the same time. At this time, the centering column drives the limit column to rotate at the same time, so that the slider and the positioning column move back and forth up and down in the receiving cylinder, driving the side toggle plate to move back and forth on the filter net, and the up and down movement of the side toggle plate can be staggered with the isolation block to ensure the normal filtering use of the equipment;

[0014] S2, the rotation of the rotating column drives the first gear and the second gear to mesh and transmit, and then the second gear drives the connecting ring to rotate at the same time, at this time, the connecting ring rotates and drives the crankshaft to rotate, and drives the guide column to move along the slide groove and form a conflict to push the isolation block, and then the isolation block moves and drives the sleeve ring to rotate, so as to intermittently rotate the four filter screens;

[0015] S3. The rotation of the rotating column drives the rotation of the limiting ring, and then the limiting ring pushes the two limiting wheels back and forth in turn, which is used to drive the limiting plate to move back and forth on the drainage seat, so as to quickly push the hot melt adhesive on the drainage seat into the filter net, ensuring that the filter net fully filters the hot melt adhesive;

[0016] S4. The hot melt adhesive is then filtered in a step-by-step manner through the guide ring, the drainage seat and the filter screen in the filter tank, ensuring that the hot melt adhesive can maintain a dispersed flow state before being filtered by the filter screen, so that the coordinated cooperation between the side toggle plate, the filter screen, the intermittent component, the limiting component and the synchronization component can make the hot melt adhesive more evenly dispersed in the filter screen area, so that in the subsequent filtration process, the filter screen can more effectively intercept impurities and improve the purity of the hot melt adhesive.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0018] 1. Through the arrangement of the drainage seat, the guide ring, the side toggle plate and the filter, the hot melt adhesive can be collected in a step-by-step manner when it falls onto the surface of the filter in the filter tank, so that the hot melt adhesive can be more evenly dispersed in the filter area. In this way, in the subsequent filtration process, the hot melt adhesive can be reduced from accumulating on the filter, which is conducive to the hot melt adhesive being able to fully contact with the filter, so that the filter can more effectively intercept impurities and improve the filtering effect of the hot melt adhesive.

[0019] 2. Through the arrangement of the intermittent assembly, the sleeve ring, the filter screen and the side toggle plate, the filter screen can be intermittently rotated in the filter tank, so that the effective filtering area may be larger during each rotation, thereby improving the filtering effect. At the same time, the filter screen briefly stops during the intermittent rotation, so that the side toggle plate can toggle the hot melt adhesive on the surface of the filter screen that is briefly stopped, and the hot melt adhesive will not be concentrated in a certain area. The hot melt adhesive can be evenly distributed on the entire filter screen surface, so that all parts of the filter screen can participate in the filtering work and give full play to the effective filtering area of ​​the filter screen.

[0020] 3. Through the arrangement of the limiting component, the rotating column, the filter and the drainage seat, the hot melt adhesive on the top of the drainage seat can be pushed, so that the hot melt adhesive quickly falls onto the surface of the filter on the drainage seat, and the hot melt adhesive will change its direction of movement as it is pushed and falls in a step-by-step manner, which gives the hot melt adhesive more opportunities to fully contact the filter, ensuring that the filter fully filters the hot melt adhesive.

[0021] 4. Through the arrangement of the moving assembly, the side toggle plate, the filter net and the drainage seat, the side toggle plate can be reciprocated up and down on the surface of the filter net. Then the side toggle plate moves up and down in coordination with the rotating filter net, and the hot melt adhesive can be toggled up and down while the filter net keeps rotating, thereby breaking the accumulation layer of the hot melt adhesive on the filter net, making the hot melt adhesive more evenly distributed on the filter net, increasing the contact area between the hot melt adhesive and the filter net, and making it easier for impurities to be intercepted by the filter net, thereby improving the filtering effect.

[0022] 5. Through the setting of the synchronization component, the centering column and the rotating column, the centering column and the rotating column can be used to rotate synchronously, which can reduce unnecessary energy transfer, thereby improving the transmission efficiency of the equipment, thereby reducing the time required for hot melt adhesive filtration, improving the overall operating efficiency, and further enhancing the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the guide ring of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the isolation block and the curved rod in the first motion state of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the isolation block and the curved rod in the second motion state of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the isolation block and the curved rod in the third motion state of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the filter screen of the present invention;

[0030] Figure 7 is a schematic structural diagram of the first gear of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the connection ring of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the side toggle plate of the present invention being retracted;

[0033] Fig.10 It is a schematic diagram of the structure of the extended side toggle plate of the present invention;

[0034] Fig.11 An exploded view of the mobile assembly of the present invention;

[0035] Fig.12 It is a structural schematic diagram of the synchronization component of the present invention;

[0036] Fig.13 It is a structural schematic diagram of the direction-limiting component of the present invention;

[0037] Fig.14 It is an exploded view of the direction-limiting component of the present invention.

[0038] Description of reference numerals:

[0039] 1. Filter tank; 11. Feed pipe; 12. Temperature control switch; 13. Discharge pipe;

[0040] 2. Filter assembly; 21. Ring; 22. Guide ring; 23. Drainage seat; 24. Isolation block; 25. Filter screen; 26. Center receiving seat; 27. Side toggle plate;

[0041] 3. Intermittent assembly; 31. Rotating column; 32. First gear; 33. Receiving cylinder; 34. Second gear; 35. Connecting ring; 36. Bending rod; 37. Guide column; 38. Fan-shaped contact block; 39. Slide; 301. Outer block; 302. Servo motor;

[0042] 4. Moving assembly; 41. Positioning column; 42. Centering column; 43. Support frame; 44. Sliding block; 45. Limiting column; 46. Limiting column; 47. Displacement slot; 48. Reciprocating guide slot;

[0043] 5. Synchronous assembly; 51. Synchronous column; 52. First pulley; 53. Belt strip; 54. Second pulley;

[0044] 6. Limiting assembly; 61. Limiting ring; 62. Limiting plate; 63. Through groove; 64. Limiting wheel; 65. Scraper; 66. Limiting cylinder plate. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] The present invention provides Figure 1-Figure 14 A filtering device for hot melt adhesive production shown in the figure comprises: a filter tank 1, a feed pipe 11 and a discharge pipe 13, a temperature control switch 12 is installed outside the filter tank 1, and the temperature control switch 12 is used to keep the inside of the filter tank 1 at a constant temperature; the specific structure and principle of the temperature control switch 12 are all prior art, reference (in the authorization announcement number CN221535891U, which discloses a filtering device for hot melt adhesive production), therefore, the structure is common knowledge known in the art, so it is not described in detail in this application;

[0047] The filter assembly 2 is used to fully filter the hot melt adhesive in the filter tank 1. The filter assembly 2 includes a guide ring 22 fixedly connected to the filter tank 1, a sleeve ring 21 arranged in the filter tank 1, and four fan-shaped filter screens 25 fixedly connected to the sleeve ring 21. The guide ring 22 is ring-shaped and the top is concave inward to form an inclined structure. A drainage seat 23 is fixedly connected to the filter tank 1. The drainage seat 23 is trapezoidal and the top is surrounded by a downward slope structure. A side toggle plate 27 that matches the filter screen 25 is installed at the bottom end of the drainage seat 23, and the side toggle plate 27 is used to adjust the movement state of the hot melt adhesive on the filter screen 25, so that the hot melt adhesive keeps rotating and moving up and down on the filter screen 25. The drainage seat 2 A central receiving seat 26 for connection is provided between 3 and the collar 21, and the filter screen 25 is sleeved on the outside of the central receiving seat 26, and an isolation block 24 is fixedly connected between the central receiving seat 26 and the filter screen 25. An intermittent component 3 that cooperates with the central receiving seat 26 and the drainage seat 23 is provided in the filter tank 1, and the intermittent component 3 is used to drive the collar 21 to intermittently move under the drainage seat 23 to ensure that the hot melt adhesive on the filter screen 25 can fully contact the side toggle plate 27. A moving component 4 that cooperates with the side toggle plate 27 is provided in the intermittent component 3, and the moving component 4 is used to move the side toggle plate 27 up and down on the surface of the filter screen 25, and keep the side toggle plate 27 staggered with the rotating isolation block 24.

[0048] refer to Figure 1-Figure 9As shown, the intermittent assembly 3 includes a rotating column 31 rotatably mounted in the drainage seat 23 and the filter tank 1, a first gear 32 rotatably connected in the drainage seat 23, and a receiving tube 33 installed in the drainage seat 23, and the first gear 32 is sleeved on the outside of the rotating column 31, and the outside of the receiving tube 33 is rotatably sleeved with a second gear 34 meshing with the first gear 32, and one end of the second gear 34 is installed with a connecting ring 35, and one end of the connecting ring 35 extends to the outside of the drainage seat 23 and is fixedly connected with a bent rod 36, and the bent rod 36 is close to one side of the filter screen 25 A guide column 37 is installed, and a slide groove 39 for the guide column 37 to move is provided on one side of the isolation block 24 and the ring 21. A servo motor 302 is fixedly connected to the top of the filter tank 1, and the servo motor 302 is used to drive the rotating column 31 to rotate. A limiting component 6 for connection is provided between the ring 21 and the drainage seat 23; a fan-shaped contact block 38 is also fixedly connected to the outside of the connecting ring 35, and an outer block 301 that cooperates with the fan-shaped contact block 38 is also fixedly connected to the side of the ring 21 close to the isolation block 24, and one side of the outer block 301 is an arc-shaped structure.

[0049] refer to Figure 2 , Fig.13 and Fig.14 As shown, the limiting assembly 6 includes a limiting plate 62 slidably connected to the top of the drainage seat 23 and a limiting ring 61 sleeved on the outside of the rotating column 31, and the limiting plate 62 is sleeved on the outside of the rotating column 31, and a through groove 63 is opened at the top of the limiting plate 62, and the through groove 63 is used to move the limiting plate 62 left and right along the outside of the rotating column 31, and two symmetrical limiting wheels 64 are installed on the top of the limiting plate 62, and the two limiting wheels 64 are in contact with the outside of the limiting ring 61, and a scraper 65 is fixedly connected to one side of the limiting plate 62, and the scraper 65 is used to push the hot melt adhesive on the surface of the drainage seat 23, and the top of the drainage seat 23 is fixedly connected to a limiting cylinder plate 66 that matches the limiting plate 62; the shape of the scraper 65 close to the drainage seat 23 is consistent with the drainage seat 23, and the scraper 65 maintains a stable fit with the drainage seat 23 bracket, and can stably push the hot melt adhesive on the drainage seat 23.

[0050] refer to Figure 2-Figure 11As shown, the moving assembly 4 includes a positioning column 41 fixedly connected to one side of the side toggle plate 27, a centering column 42 installed between the receiving tube 33 and the drainage seat 23, and a limiting column 46 rotatably connected in the receiving tube 33, and one end of the centering column 42 extends to the inside of the receiving tube 33 and is fixedly connected to one end of the limiting column 46, a support frame 43 for connection is provided between the receiving tube 33 and the drainage seat 23, one end of the positioning column 41 extends to the inside of the receiving tube 33 and is fixedly connected to a slider 44, one end of the slider 44 is provided with a displacement groove 47 for the limiting column 46 to be inserted, and the slider 44 is close to A limiting column 45 is installed on one side of the limiting column 46, and a reciprocating guide groove 48 is opened on the outside of the limiting column 46 for the limiting column 45 to move back and forth up and down, and the reciprocating guide groove 48 is formed by a plurality of V-shaped ones connected end to end in series, and a synchronous component 5 for connection is arranged between the receiving cylinder 33 and the rotating column 31; the synchronous component 5 includes a synchronous column 51 connected between the centering column 42 and the drainage seat 23 and a first pulley 52 sleeved on the outside of the rotating column 31, a second pulley 54 is sleeved on the outside of the synchronous column 51, and a belt strip 53 is sleeved between the second pulley 54 and the first pulley 52.

[0051] A filtering method for a filtering device for hot melt adhesive production, comprising the following steps:

[0052] S1. First, the rotating column 31 rotates to drive the synchronous component 5 to rotate at the same time, and then the synchronous component 5 drives the centering column 42 to rotate at the same time. At this time, the centering column 42 rotates to drive the limiting column 46 to rotate at the same time, so that the slider 44 and the positioning column 41 move back and forth up and down along the receiving tube 33, driving the side toggle plate 27 to move back and forth up and down on the filter screen 25, and the up and down movement of the side toggle plate 27 can be staggered with the isolation block 24 to ensure the normal filtering use of the equipment;

[0053] S2, the rotation of the rotating column 31 drives the first gear 32 and the second gear 34 to mesh and transmit, and then the second gear 34 drives the connecting ring 35 to rotate at the same time, and the connecting ring 35 rotates to drive the crankshaft 36 to rotate, and drives the guide column 37 to move along the slide groove 39 and form a conflict to push the isolation block 24, and then the isolation block 24 moves to drive the ring 21 to rotate, so as to intermittently rotate the four filter screens 25;

[0054] S3, the rotation of the rotating column 31 drives the rotation of the limiting ring 61, and then the limiting ring 61 pushes the two limiting wheels 64 back and forth in sequence, so as to drive the limiting plate 62 to move back and forth on the drainage seat 23, so as to quickly push the hot melt adhesive on the drainage seat 23 onto the filter screen 25, so as to ensure that the filter screen 25 fully filters the hot melt adhesive;

[0055] S4. Subsequently, the hot melt adhesive is filtered in a step-by-step manner in the filter tank 1 through the guide ring 22, the drainage seat 23 and the filter screen 25, ensuring that the hot melt adhesive can maintain a dispersed flow state before being filtered by the filter screen 25, so that the coordinated cooperation among the side toggle plate 27, the filter screen 25, the intermittent component 3, the limiting component 6 and the synchronization component 5 can make the hot melt adhesive more evenly dispersed in the filter screen 25 area, so that in the subsequent filtration process, the filter screen 25 can more effectively intercept impurities and improve the purity of the hot melt adhesive.

[0056] Through the above technical solution:

[0057] When in use;

[0058] In the first step, when the hot melt adhesive needs to be filtered, the feed pipe 11 is first used to discharge the hot melt adhesive into the interior of the filter tank 1, and then the hot melt adhesive enters the interior of the filter tank 1 and falls on the surface of the guide ring 22, and the guide ring 22 is used to guide the hot melt adhesive on its surface to the drainage seat 23 and the filter screen 25, and drives the rotating column 31 to rotate through the drive of the servo motor 302. At this time, the rotation of the rotating column 31 drives the first gear 32 to rotate at the same time, and then the first gear 32 rotates and engages with the second gear 34 to drive the second gear 34 to rotate on the receiving tube 33, and the rotation of the second gear 34 drives the connecting ring 35 to rotate, and the rotation of the connecting ring 35 drives the curved rod 36 to rotate at the same time, so that the curved rod 36 and the connecting ring 35 move in a circle along the bottom end of the drainage seat 23, and the rotation of the curved rod 36 drives the guide column 37 to rotate, and the guide column 37 moves along the slide groove. The filter screen 25 is moved to the bottom of the filter tank 1 by the guide post 37, and the filter screen 25 is moved to the bottom of the filter tank 1 by the guide post 37.

[0059] In the second step, when the rotating column 31 rotates, the limiting ring 61 is driven to rotate through the rotation of the rotating column 31, and then the limiting ring 61 rotates to form a conflict with the outside of one of the limiting wheels 64 and push one of the limiting wheels 64 to move. At this time, one of the limiting wheels 64 moves to drive the limiting plate 62 to move horizontally along the top of the drainage seat 23, and the limiting plate 62 moves along the outside of the rotating column 31 under the action of the through groove 63, which can prevent the limiting plate 62 from conflicting with the rotating column 31 when moving, and the limiting plate 62 drives the other limiting wheel 64 to move at the same time when moving, and the other limiting wheel 64 approaches the outside of the limiting ring 61. Therefore, after the limiting ring 61 rotates and slides over the outside of one of the limiting wheels 64, the limiting ring 61 then approaches the outside of the other limiting wheel 64 and forms a conflict with it, and then pushes the other limiting wheel 64 to move. Therefore, the limiting ring 61 rotates and contacts the two limiting wheels 64 in an alternating manner, which is used to make the limiting plate 62 move back and forth on the drainage seat 23, so that the hot melt adhesive quickly falls onto the surface of the filter screen 25 on the drainage seat 23, and the hot melt adhesive will change its movement direction as it is pushed and cooperates with the step-by-step falling process, which gives the hot melt adhesive more opportunities to fully contact the filter screen 25, ensuring that the filter screen 25 fully filters the hot melt adhesive.

[0060] In the third step, when the rotating column 31 is rotating and the side toggle plate 27 needs to move up and down on the surface of the filter screen 25, the first pulley 52 is driven to rotate by the rotation of the rotating column 31, and then the first pulley 52 rotates to drive the belt strip 53 to rotate, and the belt strip 53 rotates to drive the second pulley 54 to rotate. At this time, the rotation of the second pulley 54 drives the synchronous column 51 to rotate at the same time, and the rotation of the synchronous column 51 drives the centering column 42 to rotate in the receiving tube 33, and the rotation of the centering column 42 drives the limiting column 46 to rotate at the same time, and the rotation of the limiting column 46 drives the reciprocating guide groove 48 opened on its surface to rotate at the same time, so that during the rotation of the reciprocating guide groove 48, its interior contacts the exterior of the limiting column 45 and pushes the limiting column 46 to rotate. The fixed column 45 moves along its internal guide, and then the limiting column 45 reciprocates up and down inside the reciprocating guide groove 48. As the limiting column 45 moves up and down, the slider 44 is driven to move up and down simultaneously along the outside of the limiting column 46. Then the slider 44 moves and drives the positioning column 41 to move up and down, so that the side toggle plate 27 moves up and down simultaneously along the surface of the filter screen 25 under the up and down movement of the positioning column 41, and can toggle the hot melt adhesive up and down while keeping it rotating on the filter screen 25, which can break the accumulation layer of the hot melt adhesive formed on the filter screen 25, make the hot melt adhesive more evenly distributed on the filter screen 25, increase the contact area between the hot melt adhesive and the filter screen 25, and make it easier for impurities to be intercepted by the filter screen, thereby improving the filtering effect.

[0061] The above only describes certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, a person skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A filtering device for hot melt adhesive production, comprising a filtering tank (1), a feeding pipe (11) and a discharging pipe (13), wherein a temperature control switch (12) is installed outside the filtering tank (1), characterized in that: A filter assembly (2) is used to fully filter the hot melt adhesive in the filter tank (1), the filter assembly (2) comprising a guide ring (22) fixedly connected to the filter tank (1), a sleeve ring (21) arranged in the filter tank (1), and four fan-shaped filter screens (25) fixedly connected to the sleeve ring (21), the guide ring (22) being ring-shaped and having a top that is recessed inwardly to form an inclined structure, a drainage seat (23) being fixedly connected to the filter tank (1), the drainage seat (23) being trapezoidal and having a top that is inclined downwardly to form a slope structure, a side toggle plate (27) cooperating with the filter screen (25) being installed at the bottom end of the drainage seat (23), and the side toggle plate (27) being used to adjust the movement state of the hot melt adhesive on the filter screen (25), so that the hot melt adhesive keeps rotating and moving up and down on the filter screen (25), and the drainage seat (23) A central receiving seat (26) for connection is provided between the filter and the collar (21), and the filter screen (25) is sleeved on the outside of the central receiving seat (26). An isolation block (24) is fixedly connected between the central receiving seat (26) and the filter screen (25). An intermittent component (3) matching with the central receiving seat (26) and the drainage seat (23) is provided in the filter tank (1), and the intermittent component (3) is used to drive the collar (21) to intermittently move below the drainage seat (23) to ensure that the hot melt adhesive on the filter screen (25) can fully contact the side toggle plate (27). A moving component (4) matching with the side toggle plate (27) is provided in the intermittent component (3), and the moving component (4) is used to move the side toggle plate (27) up and down on the surface of the filter screen (25) and keep the side toggle plate (27) and the rotating isolation block (24) staggered.

2. A filtering device for hot melt adhesive production according to claim 1, characterized in that: The intermittent assembly (3) comprises a rotating column (31) rotatably mounted in the drainage seat (23) and the filter tank (1), a first gear (32) rotatably connected in the drainage seat (23), and a receiving tube (33) mounted in the drainage seat (23), wherein the first gear (32) is sleeved on the outside of the rotating column (31), and a second gear (34) meshing with the first gear (32) is rotatably sleeved on the outside of the receiving tube (33), and a connecting ring (35) is installed at one end of the second gear (34), and one end of the connecting ring (35) extends A curved rod (36) extends to the outside of the drainage seat (23) and is fixedly connected thereto; a guide column (37) is installed on a side of the curved rod (36) close to the filter screen (25); a slide groove (39) for the guide column (37) to move is provided on one side of the isolation block (24) and the collar (21); a servo motor (302) is fixedly connected to the top of the filter tank (1); and the servo motor (302) is used to drive the rotating column (31) to rotate; and a direction limiting component (6) for connection is provided between the collar (21) and the drainage seat (23).

3. A filtering device for hot melt adhesive production according to claim 2, characterized in that: The outside of the connecting ring (35) is also fixedly connected to a fan-shaped contact block (38), and the side of the sleeve ring (21) close to the isolation block (24) is also fixedly connected to an outer block (301) that matches the fan-shaped contact block (38), and one side of the outer block (301) is in an arc-shaped structure.

4. A filtering device for hot melt adhesive production according to claim 2, characterized in that: The limiting assembly (6) comprises a limiting plate (62) slidably connected to the top of the drainage seat (23) and a limiting ring (61) sleeved on the outside of the rotating column (31), and the limiting plate (62) is sleeved on the outside of the rotating column (31), and a through groove (63) is provided at the top of the limiting plate (62), and the through groove (63) is used to move the limiting plate (62) left and right along the outside of the rotating column (31), and two symmetrical limiting wheels (64) are installed at the top of the limiting plate (62), and the two limiting wheels (64) are in contact with the outside of the limiting ring (61), and a scraper (65) is fixedly connected to one side of the limiting plate (62), and the scraper (65) is used to push the hot melt adhesive on the surface of the drainage seat (23), and the top of the drainage seat (23) is fixedly connected to a limiting cylinder plate (66) that matches the limiting plate (62).

5. A filtering device for hot melt adhesive production according to claim 4, characterized in that: The shape of the scraper (65) on the side close to the drainage seat (23) is consistent with that of the drainage seat (23), and the scraper (65) and the drainage seat (23) bracket are kept in stable contact, so as to stably push the hot melt adhesive on the drainage seat (23).

6. A filtering device for hot melt adhesive production according to claim 4, characterized in that: The moving assembly (4) comprises a positioning column (41) fixedly connected to one side of the side toggle plate (27), a centering column (42) installed between the receiving tube (33) and the drainage seat (23), and a limiting column (46) rotatably connected to the receiving tube (33), wherein one end of the centering column (42) extends into the interior of the receiving tube (33) and is fixedly connected to one end of the limiting column (46), a supporting frame (43) for connection is provided between the receiving tube (33) and the drainage seat (23), and one end of the positioning column (41) extends to the receiving tube ( A slider (44) is fixedly connected to the interior of the receiving cylinder (33), one end of the slider (44) is provided with a displacement groove (47) for inserting a limiting column (46), a limiting column (45) is installed on the side of the slider (44) close to the limiting column (46), and a reciprocating guide groove (48) is provided on the exterior of the limiting column (46) for the limiting column (45) to reciprocate up and down, and the reciprocating guide groove (48) is formed by a plurality of V-shaped grooves connected end to end in series, and a synchronous component (5) for connection is provided between the receiving cylinder (33) and the rotating column (31).

7. A filtering device for hot melt adhesive production according to claim 6, characterized in that: The synchronous assembly (5) comprises a synchronous column (51) connected between a centering column (42) and a drainage seat (23) and a first belt pulley (52) sleeved on the outside of a rotating column (31); a second belt pulley (54) is sleeved on the outside of the synchronous column (51), and a belt strip (53) is sleeved between the second belt pulley (54) and the first belt pulley (52).

8. A filtering method for a filtering device for hot melt adhesive production, characterized in that: The hot melt adhesive production filtering device according to claim 7 comprises the following steps: S1. First, the rotating column (31) rotates to drive the synchronous component (5) to rotate simultaneously, and then the synchronous component (5) drives the centering column (42) to rotate simultaneously. At this time, the centering column (42) rotates to drive the limiting column (46) to rotate simultaneously, so that the slider (44) and the positioning column (41) move back and forth up and down along the receiving tube (33), driving the side toggle plate (27) to move back and forth up and down on the filter screen (25), and the up and down movement of the side toggle plate (27) can be staggered with the isolation block (24), ensuring normal filtering use of the equipment; S2, the rotation of the rotating column (31) drives the first gear (32) and the second gear (34) to mesh and transmit, and then the second gear (34) drives the connecting ring (35) to rotate at the same time, and at this time, the connecting ring (35) rotates to drive the curved rod (36) to rotate, and drives the guide column (37) to move along the slide groove (39) and form a resistance to push the isolation block (24), and then the isolation block (24) moves to drive the sleeve ring (21) to rotate, so as to intermittently rotate the four filter screens (25); S3, the rotation of the rotating column (31) drives the limiting ring (61) to rotate, and then the limiting ring (61) pushes the two limiting wheels (64) back and forth in sequence, so as to drive the limiting plate (62) to move back and forth on the drainage seat (23), so as to quickly push the hot melt adhesive on the drainage seat (23) onto the filter screen (25), so as to ensure that the filter screen (25) fully filters the hot melt adhesive; S4. The hot melt adhesive is then filtered in a step-by-step manner in the filter tank (1) through the guide ring (22), the drainage seat (23) and the filter screen (25), ensuring that the hot melt adhesive can maintain a dispersed flow state before being filtered by the filter screen (25). The side toggle plate (27), the filter screen (25), the intermittent component (3), the limiting component (6) and the synchronization component (5) cooperate with each other to make the hot melt adhesive more evenly dispersed in the filter screen (25) area. In this way, in the subsequent filtering process, the filter screen (25) can more effectively intercept impurities and improve the purity of the hot melt adhesive.

Images