Automatic screen changer for viscous fluid filter and use method

Abstract

The invention discloses an automatic screen changer for a viscous fluid filter and a use method, and relates to the technical field of automatic screen changers. The device comprises a filtering main machine and a plurality of net winding drums, and further comprises a storage unit arranged on the filtering main machine; a filtering unit; a monitoring unit is arranged on the filtering host; the net walking unit internally comprises a net walking driving assembly, a condensation assembly and a disassembly assembly. The device has the advantages that the filter screens can be independently replaced and continued by utilizing a filtering mode that a plurality of groups of filter screens are matched with one another, normal filtration of viscous fluid cannot be influenced in a screen continued process, automatic screen walking replacement can be realized when more impurities exist on the filter screens by utilizing a mode that pressure monitoring is matched with heating melting and cooling solidification, the screen walking process is more stable, and the filtering efficiency is improved. Large pressure fluctuation cannot be generated to influence filtration of the viscous fluid, separation and independent discharging of the filter screen and the waste plastic plate can be achieved, and recycling of the filter screen and the waste plastic plate is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic screen changers, and in particular to an automatic screen changer for a viscous fluid filter and a use method thereof. Background Art

[0002] Viscous fluid filters are filters used to filter impurities in viscous fluids such as plastics, chemical fibers, rubber, adhesives, sols, and coatings. They are usually equipped with automatic screen changers to achieve automatic replacement of the filter screen during the filtration process, thereby improving the filtration efficiency of the viscous fluid.

[0003] Existing automatic screen changers use a variety of methods to achieve automatic replacement of filter screens, such as an automatic screen changer with publication number CN203438523U, which includes a screen changer body, two electro-hydraulic push rods, upper and lower slide columns, a coarse screen, a fine screen and a pressure sensor. The screen changer body is provided with two axial through holes, and the upper and lower slide columns are respectively arranged in the corresponding axial through holes, and the upper and lower slide columns are both provided with a screen chamber; the left and right sides of the screen changer body are respectively provided with a discharge port and a feed port at the center position, and the discharge port and the feed port are respectively connected to the screen chambers on the upper and lower slide columns through two straight branch channels;

[0004] Existing automatic screen changers usually use an external drive mechanism to achieve automatic replacement of the filter screen. However, the length of the filter screen is limited. After the filter screen on the drive mechanism is used up, the filter screen needs to be disassembled and replaced, which is inefficient. At the same time, the device cannot separate the impurities on the filter screen from the filter screen. The impurities after the screen change adhere to the filter screen and cannot be recycled.

[0005] For example, in the prior art referred to above, the device uses an electro-hydraulic push rod to push the filter to move to achieve screen replacement. However, due to the limited length of the filter that can be installed on the electro-hydraulic push rod, if the filter on the electro-hydraulic push rod is used up, it is necessary to stop the machine for replacement, which affects the filtering efficiency. In addition, the use of the electro-hydraulic push rod to push the filter to move will cause a large pressure fluctuation, which will have a great impact on the flow of the viscous fluid in the filter during the screen replacement process. At the same time, the plastic impurities adhered to the filter will solidify on the filter during filtering, and the plastic impurities cannot be removed by flushing, and cannot be recycled.

[0006] Therefore, it is urgent to design an automatic screen changer for viscous fluid filter and a method of use to solve the above problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides an automatic screen changer for a viscous fluid filter and a method of using the same, which solves the problems raised in the above-mentioned background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic screen changer for a viscous fluid filter, comprising a filter host provided with a screen inlet and a screen outlet, and a plurality of screen reels composed of filter screens wound around them, and further comprising:

[0009] A storage unit is provided on the filter host, and is used to store a plurality of mesh rolls and to feed the filter mesh. An extrusion assembly for combining the plurality of filter meshes is provided in the storage unit;

[0010] The filter unit is used to realize the meshing of the filter net and cooperate with the viscous fluid filter to filter impurities. The filter unit includes a mounting pipe and a junction box arranged on the filter host, and the mounting pipe cooperates with the viscous fluid filter. The filter host is provided with a monitoring unit for monitoring the pressure and temperature of the viscous fluid. When the filter net filters the viscous fluid, an adhered waste plastic plate will be formed on the filter net;

[0011] The mesh unit is used to realize automatic mesh movement and replacement of the filter, and includes a mesh drive component, a condensation component and a splitting component. The mesh drive component cooperates with the condensation component to realize automatic movement and mesh replacement of the filter, and the splitting component is used to realize the splitting and independent discharge of the waste filter and the waste viscous fluid plate.

[0012] Preferably, the extrusion assembly includes a mesh inlet box fixedly mounted on the filter host, and the mesh inlet box cooperates with a plurality of filter screens, a fixed frame is fixedly mounted on the mesh inlet box, two mesh pressing rollers are mounted on the fixed frame through two movable mechanisms, and the two mesh pressing rollers are respectively located on both sides of the filter screen, and mesh belt limit boxes for limiting the plurality of filter screens are fixedly mounted on the upper and lower parts of the fixed frame.

[0013] Preferably, the moving mechanism includes a threaded adjustment rod threadedly mounted on a fixed frame, a moving frame is slidably mounted on the fixed frame, and the moving frame is rotatably connected to the end of the threaded adjustment rod, a rotating roller is rotatably mounted in the moving frame, and the pressing roller is fixedly mounted on the rotating roller.

[0014] Preferably, the monitoring unit includes a pressure sensor fixedly mounted on the filter host, the pressure sensor is used to monitor the melt pressure and change of the viscous fluid in the installation tube, the filter host is provided with a heating temperature sensor for monitoring the melt temperature at the net inlet end, and the filter host is provided with a net inlet heating pipe for heating the filter net at the net inlet end.

[0015] Preferably, the mesh driving assembly comprises a mesh box fixedly mounted on the filter host, a mesh box is fixedly mounted in the mesh box, a mesh frame matching the mesh outlet end of the filter host is arranged in the mesh box, an inclined guide plate is arranged in the mesh frame, and an auxiliary mechanism is arranged in the mesh box;

[0016] A mesh outlet box is fixedly installed on the mesh box, and a mesh slot matching the mesh frame is provided in the mesh outlet box. A mesh heating pipe for heating and melting the waste plastic board is provided in the mesh outlet box, and a mesh temperature sensor for monitoring the temperature of the waste plastic board is provided in the mesh outlet box.

[0017] Preferably, the auxiliary mechanism includes a storage cylinder fixedly installed in the mesh box, a piston disk is slidably installed in the storage cylinder, and the storage cylinder is filled with cooling water, a movable tooth plate is fixedly installed on the piston disk, and a plurality of connecting rollers are rotatably installed in the mesh box, a driven gear and a mesh ratchet are fixedly installed on each of the connecting rollers, and each driven gear cooperates with the movable tooth plate, and a connecting groove cooperating with a plurality of mesh ratchets is provided on the mesh frame, and each mesh ratchet cooperates with the filter net.

[0018] Preferably, the condensation assembly includes a water guide ring pipe 1 fixedly installed in the grid inlet box, and a water inlet pipe for water intake is fixedly connected between the water guide ring pipe 1 and the grid inlet box, and a water guide ring pipe 2 and a water guide ring pipe 3 are fixedly installed in the grid walking box, and a water guide pipe is fixedly connected between the water guide ring pipe 2 and the water guide ring pipe 1, and a water diversion mechanism is installed on the water guide ring pipe 2.

[0019] Preferably, the water diversion mechanism includes a water diversion bend pipe fixedly connected between water diversion ring pipe two and water diversion ring pipe three, and the mesh box is located inside water diversion ring pipe two and water diversion ring pipe three, the water diversion ring pipe three is fixedly connected with a water outlet pipe, and a control valve is provided on the water outlet pipe, and the water diversion ring pipe two is fixedly connected with multiple water diversion pipes.

[0020] Preferably, the splitting component includes a mesh slot opened in the mesh outlet box, and the mesh slot cooperates with the mesh box, the mesh outlet box is provided with a dispersion slot 1 and a dispersion slot 2, and the dispersion slot 1 and the dispersion slot 2 are connected to the mesh slot, and the dispersion slot 1 and the dispersion slot 2 are respectively matched with the waste filter screen and the waste plastic board, and a splitting blade for cutting is fixedly installed in the mesh outlet box, and the splitting blade is located at the junction of the dispersion slot 1 and the dispersion slot 2.

[0021] A method for using an automatic screen changer for a viscous fluid filter, used for the automatic screen changer for a viscous fluid filter, comprises the following steps:

[0022] S1. First, the filter port on the viscous fluid filter is clamped and installed on the installation tube of the filter host, and then the filter nets on the multiple net rolls in the storage unit are pulled out, and the multiple filter nets are inserted into the filter host so that the filter nets cover the installation tube, and the installation of the filter nets is completed;

[0023] S2. Set the mesh pressure and mesh temperature of the viscous fluid through the monitoring unit. The mesh pressure is set to 10MPa not higher than the normal value, the mesh temperature is set to 70-120℃, and the heating temperature of the filter is pre-set to be consistent with the filtering temperature of the viscous fluid. Set the mesh distance and mesh time. The mesh distance is set to not exceed 50% of the filter diameter in the installation pipe;

[0024] S3. When the monitoring unit detects that the pressure of the viscous fluid is relatively high, the mesh driving assembly in the mesh unit will start, heating the waste plastic plate on the side of the filter screen to slightly melt it, so that the waste plastic plate melts into liquid and flows to the side, and at the same time, the filter screen at the rear is heated to the same temperature as the viscous fluid;

[0025] S4, when the waste plastic plate 1 flows, the condensation component is started to cool and solidify the front part thereof, and the traction force generated when the liquid solidifies is used to pull the filter screen to move horizontally, so that the filter screen after filtering at the front part can be pulled forward and away, and at the same time, the clean filter screen at the rear part can be pulled into the filter host, completing the process of walking and changing the screen;

[0026] S5. When the filter is moving, it will be in contact with the split component and squeezed, and the split component will cut and layer it, so that the waste filter and the waste plastic board can be automatically separated, so that the waste filter and the waste plastic board can be independently recycled;

[0027] S6. If one of the mesh rolls is used up during the mesh running process, it can be replaced with a new one and inserted into the filter host after replacement. During the replacement process, there is always a filter in the filter host, which will not affect the filtering process, and the mesh can be replaced without stopping the machine.

[0028] The invention provides an automatic screen changer for a viscous fluid filter and a use method thereof.

[0029] It has the following beneficial effects:

[0030] 1. When replacing the filter screen, the automatic screen changer adopts the method of combining and cooperating three groups of filter screens, which can cooperate with each other during filtration and effectively improve the filtration efficiency. At the same time, the lengths of the three groups of screen reels are different. When one group of screen reels needs to be replaced after use, the other two groups of screen reels can be used normally for filtration, so that the screen can be changed without stopping the machine, and the filtration efficiency of the filter is higher.

[0031] 2. When replacing the filter, the automatic screen changer can monitor the pressure of the viscous fluid on the filter on the filter host in real time. If the pressure is detected to be too high, it means that there are too many impurities on the filter, which affects the normal filtering effect of the viscous fluid, which means that the filter needs to be replaced at this time, so that real-time monitoring can be achieved and the filter can be replaced in time to avoid blockage due to excessive impurities.

[0032] 3. When replacing the filter, the automatic screen changer heats and melts the waste plastic on the filter to make it flow and then cools and solidifies it. When the waste plastic liquid flows and cools and solidifies, the solidified section will generate traction force on the unsolidified section. This part of the pulling force can be used to realize the automatic movement of the filter, thereby realizing the automatic screen changing operation of the filter. The entire screen changing process does not require the intervention of external driving equipment. The screen changing process is smoother and will not produce large pressure fluctuations, that is, it will not affect the filtration of viscous fluids.

[0033] 4. When replacing the filter, the automatic screen changer can realize the automatic separation of the waste plastic plate and the filter by using the cooperation of the separation blade and the dispersion slot 1 and the dispersion slot 2 during the melting and solidification of the waste plastic and the running of the filter, that is, the waste plastic plate and the filter can be separated and run during the running of the filter, thereby realizing the independent recycling of the waste plastic plate and the filter.

[0034] In summary, the present invention utilizes a filtering method in which multiple groups of filter screens are coordinated, which can not only improve the filtering effect of the viscous fluid, but also realize the independent replacement and re-screening of the filter screen, and the normal filtration of the viscous fluid will not be affected during the re-screening process. At the same time, by utilizing the pressure monitoring in combination with the heating and melting and cooling and solidification, the automatic network replacement can be realized without external drive when there are many impurities on the filter screen. The network replacement process is more stable and will not produce large pressure fluctuations to affect the filtration of the viscous fluid. The filter screen and the waste plastic board can also be separated and independently discharged, thereby realizing the recycling and reuse of the filter screen and the waste plastic board. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0036] Figure 1 This is a schematic structural diagram of an automatic screen changer for a viscous fluid filter proposed by the present invention;

[0037] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0038] Figure 3 for Figure 2 A top view of

[0039] Figure 4 for Figure 1 Schematic diagram of the structure of the filtering host;

[0040] Figure 5 for Figure 1 Schematic diagram of the structure after removing the filtering host;

[0041] Figure 6 for Figure 5 The schematic diagram of the structure of the two filter storage boxes 1 and 2 and the filter;

[0042] Figure 7 for Figure 6 A schematic diagram of the structure of the middle fixing frame;

[0043] Figure 8 for Figure 5 Schematic diagram of the structure of the mid-travel mesh box;

[0044] Fig. 9 for Figure 8 Schematic diagram of the structure of the middle mesh box;

[0045] Fig.10 for Fig. 9 Schematic diagram of the internal structure of the middle mesh box;

[0046] Fig.11 for Fig.10 Schematic diagram of the internal structure of the moving tooth plate and the storage cylinder;

[0047] Fig.12 for Fig.11 A front view of

[0048] Fig.13 for Figure 5 Structural diagram of the inlet and outlet cages;

[0049] Fig.14 It is a structural schematic diagram of the condensation component in the present invention;

[0050] Fig.15 for Figure 5 The structural diagram of the middle outlet cage;

[0051] Fig.16 for Fig.15 Schematic diagram of the internal structure of the mid-outlet cage.

[0052] In the figure: 1 filtering host, 2 filter storage box 1, 3 filter storage box 2, 4 inlet box, 5 junction box, 6 mesh box, 7 outlet box, 8 installation pipe, 9 water inlet pipe, 10 waste plastic board, 11 filter, 12 pressure sensor, 13 outlet pipe, 14 water guide pipe, 15 installation frame, 16 fixed frame, 17 mesh drum, 18 mesh belt limit box, 19 mesh roller, 20 threaded adjustment rod, 21 mobile frame, 22 mesh box, 23 mesh frame, 24 inclined guide plate, 25 storage cylinder, 26 mobile tooth plate, 27 driven gear, 28 mesh ratchet, 29 piston plate, 30 connecting roller, 31 water guide ring pipe 1, 32 water guide ring pipe 2, 33 water guide elbow, 34 water guide ring pipe 3, 35 mesh temperature sensor, 36 mesh heating pipe, 37 mesh slot, 38 split blade. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0054] Example 1: Reference Figure 1-Figure 7 , an automatic screen changer for a viscous fluid filter, comprising a filter main body 1 provided with a screen inlet and a screen outlet, and a plurality of screen reels 17 formed by winding filter screens 11;

[0055] The number of the net reel 17 is set to 3, as shown in the attached manual. Figure 1 As shown, the two mesh reels 17 on both sides are of the same size and smaller in volume, and the mesh reel 17 in the middle is relatively smaller;

[0056] The automatic screen changer also includes: a storage unit, which is arranged on the filter host 1, and is used to store multiple screen rolls 17 and to feed the filter screen 11. The filter host 1 is provided with a mounting frame 15, and two filter screen storage boxes 1 2 and a filter screen storage box 2 3 are fixedly installed on the mounting frame 15. The two filter screen storage boxes 1 2 are used to store the larger screen rolls 17, and the filter screen storage box 2 3 is used to store the smaller screen rolls 17;

[0057] Before filtering, first take out the filter screens 11 in the two filter screen storage boxes 1 2 and the one filter screen storage box 2 3, insert them into the filter inlet end of the filter host 1, and pull them out from the filter outlet end, so as to complete the insertion and preliminary installation of the filter screen 11;

[0058] The filter unit is used to realize the meshing of the filter screen 11 and cooperate with the viscous fluid filter to realize the filtration of impurities. The filter unit includes a mounting tube 8 and a junction box 5 arranged on the filter host 1. The mounting tube 8 cooperates with the viscous fluid filter. The mounting tube 8 is installed on the discharge pipe on the viscous fluid filter to complete the installation of the automatic screen changer and the viscous fluid filter. At this time, the filtration and screen changing of impurities in the viscous fluid can be realized;

[0059] During the process of mesh running, the filter meshes 11 on the multiple mesh reels 17 will be gradually consumed. Since the mesh reels 17 on both sides are larger in volume and the mesh reel 17 in the middle is smaller in volume, the mesh reel 17 in the middle will be consumed first. After the mesh reel 17 in the middle is consumed, a new mesh reel 17 can be replaced. During the replacement process, since the mesh reels 17 on the two side portions are not consumed completely, the filter meshes 11 on the two side portions can still perform filtering work.

[0060] When the filter screens 11 on both sides are consumed, the newly replaced filter screen 11 in the middle has not been consumed yet, and the screen reels 17 on both sides can be replaced. During the replacement process, the filter screen 11 in the middle can continue to filter, and the replacement can be achieved without stopping the machine during the network renewal process, which can effectively improve the filtering efficiency of the viscous fluid filter.

[0061] In a further embodiment, a pressing assembly for merging a plurality of filter screens 11 is provided in the storage unit, the pressing assembly comprises a screen-entry box 4 fixedly mounted on the filter host 1, and the screen-entry box 4 cooperates with the plurality of filter screens 11, a fixing frame 16 is fixedly mounted on the screen-entry box 4, two screen-pressing rollers 19 are mounted on the fixing frame 16 through two moving mechanisms, and the two screen-pressing rollers 19 are respectively located on both sides of the filter screen 11;

[0062] The moving mechanism includes a threaded adjustment rod 20 threadedly mounted on a fixed frame 16, a moving frame 21 is slidably mounted on the fixed frame 16, and the moving frame 21 is rotatably connected to the end of the threaded adjustment rod 20, a rotating roller is rotatably mounted in the moving frame 21, and the screen pressing roller 19 is fixedly mounted on the rotating roller;

[0063] When the three filter screens 11 are inserted into the filter main body 1, the operator can rotate the two threaded adjustment rods 20 to drive the two mobile frames 21 to move, so that the pressing rollers 19 on the two mobile frames 21 are close to each other and squeeze the two sides of the multiple filter screens 11 respectively, and the multiple filter screens 11 can be pressed together to apply a squeezing force to each other, so that the multiple filter screens 11 are closely attached together and will not separate during filtering;

[0064] The plurality of filter screens 11 are attached to each other to filter the viscous fluid, which can further increase the filtering effect of impurities in the viscous fluid, and at the same time facilitate the replacement of the screens without stopping the machine, thereby further improving the filtering efficiency of the viscous fluid filter;

[0065] Special note: For ease of understanding, a plurality of filter screens 11 attached together are collectively referred to as a filter screen 11, that is, all filter screens 11 described below are collectively referred to as a plurality of filter screens 11 attached together;

[0066] The upper and lower parts of the fixing frame 16 are fixedly installed with mesh belt limiting boxes 18 for limiting the positions of multiple filter screens 11. The two mesh belt limiting boxes 18 are used to limit the positions of multiple filter screens 11, making it easier for them to fit together, further limiting the positions of the filter screens 11, and improving the fitting effect of the filter screens 11.

[0067] Example 2: Reference Figure 1-Figure 4 The difference between this embodiment and the first embodiment is that: a monitoring unit for monitoring the pressure and temperature of the viscous fluid is provided on the filtering host 1, and when the filter screen 11 filters the viscous fluid, an adhered waste plastic plate 10 is formed on the filter screen 11;

[0068] The monitoring unit includes a pressure sensor 12 fixedly mounted on the filter host 1. The pressure sensor 12 is used to monitor the melt pressure and change of the viscous fluid in the mounting pipe 8. If the pressure of the viscous fluid is detected to be large and exceeds a limit value, it means that the filter screen 11 in the filter host 1 is clogged, and the viscous fluid in it does not flow smoothly, resulting in blockage, so it is judged that a screen replacement operation is required at this time;

[0069] The filter host 1 is provided with a net inlet heating pipe for heating the filter 11 at the net inlet end. The net inlet heating pipe is used to heat the clean filter 11 at the end of the filter host 1, increase the temperature of the filter 11 to make it consistent with the temperature of the viscous fluid, avoid the cold filter 11 from contacting the high-temperature viscous fluid when changing the net, prevent the temperature from dropping suddenly and causing pressure fluctuations, and reduce the viscosity between the viscous fluid and the filter 11, so that the filter 11 can move smoothly to achieve the net changing operation, and improve the filtering stability of the viscous fluid;

[0070] The filtering host 1 is provided with a heating temperature sensor for monitoring the temperature of the melt at the inlet end. The heating temperature sensor is used to monitor the temperature of the filter screen 11 and the viscous fluid to ensure that the temperatures of the two can be kept consistent.

[0071] Example 3: Reference Figure 2-Figure 5 as well as Figure 8-Figure 16 The technical solution of this embodiment is different from that of the second embodiment in that: a mesh unit is used to realize automatic mesh movement and replacement of the filter 11. The mesh unit includes a mesh driving component, a condensing component and a splitting component. The mesh driving component cooperates with the condensing component to realize automatic movement and mesh replacement of the filter 11. The splitting component is used to realize the splitting and independent discharge of the waste filter 11 and the waste viscous fluid plate.

[0072] The mesh driving assembly includes a mesh box 6 fixedly mounted on the filter host 1, a mesh box 22 fixedly mounted in the mesh box 6, a mesh frame 23 matched with the mesh outlet of the filter host 1 is arranged in the mesh box 22, and an inclined guide plate 24 is arranged in the mesh frame 23;

[0073] Before filtering the viscous fluid, the filter host 1 first starts the viscous fluid filter to introduce part of the viscous fluid to make it initially circulate in the filter host 1, and blocks one end of the installation pipe 8. Since the mesh box 22, the mesh frame 23 and the filter host 1 are in a connected state, the viscous fluid will flow into the mesh frame 23 at this time, and the mesh frame 23 will be filled and blocked. When the viscous fluid appears at the end of the mesh frame 23, the condensation component can be started to cool the viscous fluid to cool it down and solidify. At this time, the solidified viscous fluid will solidify to form a waste plastic plate 10 to block the mesh frame 23. After solidification, when the viscous fluid in the filter host 1 is filtered, the viscous fluid will not continue to enter the mesh frame 23, so it will only be filtered through the filter 11;

[0074] A mesh box 7 is fixedly mounted on the mesh box 6, and a mesh slot 37 matching the mesh frame 23 is provided in the mesh box 7, a mesh heating pipe 36 for heating and melting the waste plastic plate 10 is provided in the mesh box 7, and a mesh temperature sensor 35 for monitoring the temperature of the waste plastic plate 10 is provided in the mesh box 7;

[0075] If the pressure sensor 12 detects that the pressure is too high and the net needs to be changed, the net heating pipe 36 in the net box 7 can be started to heat the waste plastic plate 10 in the net box 7 to melt it. When the waste plastic plate 10 melts, it will flow toward the net box 7 under the action of the inclined guide plate 24. When the melt flows to a certain extent, the condensation component can be started to cool and solidify the melted waste plastic plate 10 at the end of the net box 7.

[0076] Since the front part cools down faster and solidifies first while the rear part has not solidified, the solidified area in the front will generate a pulling force on the unsolidified area in the rear (i.e., a temperature gradient is generated, and the lower temperature area generates internal stress on the higher temperature area. This internal stress causes tension or pressure to be formed in the liquid, so that in the subsequent solidification process, the solidified area will exert tension on the unsolidified area). That is, when the waste plastic plate 10 solidifies, it will pull the filter screen 11 to move in the direction of the outlet box 7, that is, the movement of the filter screen 11 is realized, so that the blocked filter screen 11 moves into the mesh box 6, and the clean filter screen 11 at the rear will move into the filter host 1, so that the mesh running process of the filter screen 11 can be completed, and the replacement of the filter screen 11 in the filter host 1 can be completed;

[0077] An auxiliary mechanism is provided in the mesh box 22, and the auxiliary mechanism includes a storage cylinder 25 fixedly installed in the mesh box 22, a piston disc 29 is slidably installed in the storage cylinder 25, and the storage cylinder 25 is filled with cooling water, a movable tooth plate 26 is fixedly installed on the piston disc 29, and a plurality of connecting rollers 30 are rotatably installed in the mesh box 22, each connecting roller 30 is fixedly installed with a driven gear 27 and a mesh ratchet 28, and each driven gear 27 is matched with the movable tooth plate 26, and a connecting groove matched with a plurality of mesh ratchet 28 is provided on the mesh frame 23, and each mesh ratchet 28 is matched with the filter screen 11;

[0078] When the mesh heating tube 36 is started to heat, part of the temperature will be transferred to the storage cylinder 25 in the mesh box 22. When the temperature of the storage cylinder 25 rises, the cooling water in it will heat up and vaporize, thereby increasing the volume and pushing the piston plate 29 to move. When the piston plate 29 moves, it will drive the moving tooth plate 26 to move. When the moving tooth plate 26 moves, it will drive multiple driven gears 27 meshing with it to rotate. When the driven gears 27 rotate, they will drive multiple mesh ratchet wheels 28 to rotate under the action of multiple connecting rollers 30.

[0079] Since the mesh frame 23 is provided with a connecting groove, the lower parts of the plurality of mesh ratchets 28 are located inside the mesh frame 23 and contact the filter 11 in the mesh frame 23, so that when the mesh ratchets 28 rotate, the filter 11 is pushed to move, thereby further promoting the movement of the filter 11 and improving the mesh efficiency of the filter 11.

[0080] When the mesh running is completed, the cooling water in the storage cylinder 25 will cool down and liquefy, thereby driving the piston disc 29 and the movable tooth plate 26 to move in the opposite direction and reset, and driving the mesh running ratchet 28 to rotate in the opposite direction during the resetting process. Due to the shape of the mesh running ratchet 28, when it rotates forward, it will rub and squeeze the filter screen 11 to make it move forward, and will not affect the filter screen 11 when it moves backward, that is, the mesh running ratchet 28 will not push the filter screen 11 to move when it rotates backward.

[0081] In a further embodiment, the condensation assembly includes a water guide ring pipe 1 31 fixedly installed in the inlet box 4, and a water inlet pipe 9 for water inlet is fixedly connected between the water guide ring pipe 1 31 and the inlet box 4, and a water guide ring pipe 2 32 and a water guide ring pipe 34 are fixedly installed in the net box 6, and a water guide pipe 14 is fixedly connected between the water guide ring pipe 2 32 and the water guide ring pipe 1 31;

[0082] The water inlet pipe 9 is connected to the external circulating water pump. The external circulating water pump is started to pump cold water into the water inlet pipe 9. The cold water in the water inlet pipe 9 will enter the water guide ring pipe 31 in the inlet box 4, so as to cool the filter screen 11 in the inlet box 4.

[0083] A water diversion mechanism is installed on the water guide ring pipe 2 32, and the water diversion mechanism includes a water guide elbow 33 fixedly connected between the water guide ring pipe 2 32 and the water guide ring pipe 3 34, and the mesh box 22 is located inside the water guide ring pipe 2 32 and the water guide ring pipe 3 34, and the water guide ring pipe 3 34 is fixedly connected with the water outlet pipe 13, and the water outlet pipe 13 is provided with a control valve, and the water guide ring pipe 2 32 is fixedly connected with multiple water diversion pipes;

[0084] After circulation, the cold water in the water guide ring 1 31 will enter the water guide ring 2 32 through the water guide pipe 14, and will enter the water guide ring 3 34 through the water guide elbow 33 after circulation in the water guide ring 2 32, and will be discharged through the water outlet pipe 13 after circulation in the water guide ring 3 34, thereby realizing the circulation of cold water;

[0085] When the cold water circulates in the water guide ring pipe 2 32 and the water guide ring pipe 3 34 , the mesh box 22 inside is cooled, thereby cooling the filter screen 11 and the waste plastic board 10 in the mesh box 22, so that the waste plastic board 10 and the filter screen 11 can be quickly cooled, and the melted waste plastic board 10 can be quickly cooled and solidified, which has the effect of promoting the meshing of the filter screen 11.

[0086] The splitting component includes a mesh slot 37 provided in the mesh box 7, and the mesh slot 37 cooperates with the mesh box 22. A dispersion slot 1 and a dispersion slot 2 are provided in the mesh box 7, and the dispersion slot 1 and the dispersion slot 2 are both connected to the mesh slot 37, and the dispersion slot 1 and the dispersion slot 2 are respectively matched with the waste filter 11 and the waste plastic plate 10. A splitting blade 38 for cutting is fixedly installed in the mesh box 7, and the splitting blade 38 is located at the junction of the dispersion slot 1 and the dispersion slot 2;

[0087] When the waste plastic board 10 and the filter screen 11 are passing through the mesh groove 37, when the waste plastic board 10 and the filter screen 11 move to the junction of the dispersion groove 1 and the dispersion groove 2, and contact with the splitting blade 38 during the movement, since the waste plastic board 10 is not completely solidified, when it contacts with the splitting blade 38, it will be cut by the splitting blade 38 and separated from the filter screen 11, so that when the filter screen 11 is passing through the mesh, the waste filter screen 11 will enter the dispersion groove 1, and the waste plastic board 10 will enter the dispersion groove 2, thereby realizing the separation of the waste filter screen 11 and the waste plastic board 10, so that the waste filter screen 11 and the waste plastic board 10 can be independently recycled, which can effectively avoid waste.

[0088] The embodiment of the present invention further provides a method for using an automatic screen changer for a viscous fluid filter, which is used for the automatic screen changer for a viscous fluid filter, and includes the following steps:

[0089] S1, firstly, the filter port on the viscous fluid filter is clamped and installed on the installation pipe 8 of the filter host 1, then the filter nets 11 on the multiple net rolls 17 in the storage unit are pulled out, and the multiple filter nets 11 are inserted into the filter host 1, so that the filter nets 11 cover the installation pipe 8, and the installation of the filter nets 11 is completed;

[0090] S2. The network pressure and network temperature of the viscous fluid are set through the monitoring unit. The network pressure is set to 10MPa not higher than the normal value, and the network temperature is set to 70-120°C. The heating temperature of the filter 11 is pre-set to be consistent with the filtering temperature of the viscous fluid, and the network distance and network time are set. The network distance is set to not exceed 50% of the filter diameter in the installation pipe 8;

[0091] S3. When the monitoring unit detects that the pressure of the viscous fluid is relatively high, the mesh driving assembly in the mesh unit will start, and the waste plastic plate 10 on the side of the filter screen 11 will be heated to slightly melt it, so that the waste plastic plate 10 melts into liquid and flows to the side, and at the same time, the filter screen 11 at the rear is heated to the same temperature as the viscous fluid;

[0092] S4, when the waste plastic plate 10 flows, the condensation component is started to cool and solidify the front part thereof, and the traction force generated when the liquid solidifies is used to pull the filter screen 11 to move horizontally, and the filter screen 11 after filtering the front part is pulled forward, and the clean filter screen 11 at the rear part is pulled into the filter host 1, and the process of walking and changing the screen is completed;

[0093] S5, the filter screen 11 will be in contact with the split component when it is moving, and under the action of the split component, it will be cut and layered, so that the waste filter screen 11 and the waste plastic board 10 can be automatically separated, and the waste filter screen 11 and the waste plastic board 10 can be independently recycled;

[0094] S6. If one of the mesh rolls 17 is used up during the mesh running process (the other mesh rolls 17 are not used up at this time), a new mesh roll 17 is replaced and inserted into the filter host 1 after the replacement. During the replacement process, the filter host 1 always has the filter 11 in it, which will not affect the filtering process. The replacement of other mesh rolls 17 is similar. Repeat the above-mentioned mesh changing steps to achieve continuous mesh running without stopping the machine.

[0095] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic screen changer for a viscous fluid filter, comprising a filter main unit (1) provided with a screen inlet and a screen outlet, and a plurality of screen reels (17) wound with filter screens (11), characterized in that: Also includes: A storage unit is arranged on the filter main body (1) and is used to store a plurality of mesh rolls (17) and to feed the filter mesh (11). An extrusion assembly for merging the plurality of filter meshes (11) is arranged in the storage unit; A filter unit, used for implementing meshing of a filter screen (11) and cooperating with a viscous fluid filter to filter impurities, comprising a mounting tube (8) and a junction box (5) arranged on a filter host (1), wherein the mounting tube (8) cooperates with the viscous fluid filter, and the filter host (1) is provided with a monitoring unit for monitoring the pressure and temperature of the viscous fluid, and when the filter screen (11) filters the viscous fluid, a waste plastic plate (10) adheres to the filter screen (11); The mesh unit is used to realize automatic mesh movement and replacement of the filter (11), and includes a mesh drive component, a condensation component and a splitting component, wherein the mesh drive component cooperates with the condensation component to realize automatic movement and mesh replacement of the filter (11), and the splitting component is used to realize the splitting and independent discharge of the waste filter (11) and the waste viscous fluid plate.

2. The automatic screen changer for a viscous fluid filter according to claim 1, characterized in that: The extrusion assembly comprises a mesh inlet box (4) fixedly mounted on a filter host (1), and the mesh inlet box (4) cooperates with a plurality of filter screens (11), a fixed frame (16) is fixedly mounted on the mesh inlet box (4), two mesh pressing rollers (19) are mounted on the fixed frame (16) via two moving mechanisms, and the two mesh pressing rollers (19) are respectively located on both sides of the filter screen (11), and mesh belt limiting boxes (18) for limiting the positions of the plurality of filter screens (11) are fixedly mounted on the upper and lower parts of the fixed frame (16).

3. The automatic screen changer for a viscous fluid filter according to claim 2, characterized in that: The moving mechanism comprises a threaded adjustment rod (20) threadably mounted on a fixed frame (16); a moving frame (21) is slidably mounted on the fixed frame (16); the moving frame (21) is rotatably connected to the end of the threaded adjustment rod (20); a rotating roller is rotatably mounted in the moving frame (21); and a screen pressing roller (19) is fixedly mounted on the rotating roller.

4. The automatic screen changer for a viscous fluid filter according to claim 1, characterized in that: The monitoring unit comprises a pressure sensor (12) fixedly mounted on the filter main unit (1), the pressure sensor (12) being used to monitor the melt pressure and change of the viscous fluid in the mounting tube (8), the filter main unit (1) being provided with a heating temperature sensor for monitoring the melt temperature at the inlet end, and the filter main unit (1) being provided with an inlet heating pipe for heating the filter screen (11) at the inlet end.

5. The automatic screen changer for a viscous fluid filter according to claim 2, characterized in that: The mesh driving assembly comprises a mesh box (6) fixedly mounted on the filter host (1), a mesh box (22) fixedly mounted in the mesh box (6), a mesh frame (23) matched with the mesh outlet end of the filter host (1) is arranged in the mesh box (22), an inclined guide plate (24) is arranged in the mesh frame (23), and an auxiliary mechanism is arranged in the mesh box (22); A mesh outlet box (7) is fixedly mounted on the mesh box (6), and a mesh outlet slot (37) matching with the mesh outlet frame (23) is provided in the mesh outlet box (7), a mesh outlet heating pipe (36) for heating and melting the waste plastic plate (10) is provided in the mesh outlet box (7), and a mesh outlet temperature sensor (35) for monitoring the temperature of the waste plastic plate (10) is provided in the mesh outlet box (7).

6. The automatic screen changer for a viscous fluid filter according to claim 5, characterized in that: The auxiliary mechanism comprises a storage cylinder (25) fixedly mounted in a mesh box (22), a piston disc (29) slidably mounted in the storage cylinder (25), and the storage cylinder (25) is filled with cooling water, a movable tooth plate (26) is fixedly mounted on the piston disc (29), a plurality of connecting rollers (30) are rotatably mounted in the mesh box (22), a driven gear (27) and a mesh ratchet (28) are fixedly mounted on each of the connecting rollers (30), and each driven gear (27) is matched with the movable tooth plate (26), a connecting groove matched with the plurality of mesh ratchet wheels (28) is provided on the mesh frame (23), and each mesh ratchet wheel (28) is matched with the filter screen (11).

7. The automatic screen changer for a viscous fluid filter according to claim 5, characterized in that: The condensation component comprises a water guide ring pipe 1 (31) fixedly installed in the inlet box (4), and a water inlet pipe (9) for water inlet is fixedly connected between the water guide ring pipe 1 (31) and the inlet box (4), and a water guide ring pipe 2 (32) and a water guide ring pipe 3 (34) are fixedly installed in the mesh box (6), and a water guide pipe (14) is fixedly connected between the water guide ring pipe 2 (32) and the water guide ring pipe 1 (31), and a water diversion mechanism is installed on the water guide ring pipe 2 (32).

8. The automatic screen changer for a viscous fluid filter according to claim 7, characterized in that: The water diversion mechanism comprises a water diversion elbow (33) fixedly connected between the water diversion ring pipe 2 (32) and the water diversion ring pipe 3 (34), and the mesh box (22) is located inside the water diversion ring pipe 2 (32) and the water diversion ring pipe 3 (34), the water diversion ring pipe 3 (34) is fixedly connected with a water outlet pipe (13), and a control valve is arranged on the water outlet pipe (13), and the water diversion ring pipe 2 (32) is fixedly connected with a plurality of water diversion pipes.

9. The automatic screen changer for a viscous fluid filter according to claim 1, characterized in that: The splitting component comprises a mesh slot (37) provided in a mesh outlet box (7), and the mesh slot (37) cooperates with the mesh box (22); a dispersion slot 1 and a dispersion slot 2 are provided in the mesh outlet box (7), and the dispersion slot 1 and the dispersion slot 2 are both connected to the mesh slot (37), and the dispersion slot 1 and the dispersion slot 2 respectively cooperate with the waste filter screen (11) and the waste plastic plate (10); a splitting blade (38) for cutting is fixedly installed in the mesh outlet box (7), and the splitting blade (38) is located at the junction of the dispersion slot 1 and the dispersion slot 2.

10. A method for using an automatic screen changer for a viscous fluid filter, used for the automatic screen changer for a viscous fluid filter as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, firstly, the filter port on the viscous fluid filter is mounted on the mounting tube (8) of the filter host (1), then the filter nets (11) on the plurality of net rolls (17) in the storage unit are pulled out, and the plurality of filter nets (11) are inserted into the filter host (1), so that the filter nets (11) cover the mounting tube (8), thereby completing the installation of the filter nets (11); S2. Setting the mesh pressure and mesh temperature of the viscous fluid through the monitoring unit. The mesh pressure is set to 10 MPa not higher than the normal value. The mesh temperature is set to 70-120° C. The heating temperature of the filter (11) is pre-set to be consistent with the filtering temperature of the viscous fluid. The mesh distance and mesh time are set. The mesh distance is set to not exceed 50% of the filter diameter in the installation pipe (8); S3. When the monitoring unit detects that the pressure of the viscous fluid is relatively high, the mesh driving assembly in the mesh unit is activated to heat the waste plastic plate (10) on the side of the filter screen (11) to slightly melt it, so that the waste plastic plate (10) melts into liquid and flows to the side, and at the same time, the filter screen (11) at the rear is heated to the same temperature as the viscous fluid; S4, when the waste plastic plate (10) flows, the condensation component is activated to cool and solidify the front part thereof, and the traction force generated when the liquid solidifies is used to pull the filter screen (11) to move horizontally, and the filter screen (11) after filtering the front part is pulled forward, and at the same time, the clean filter screen (11) at the rear part is pulled into the filter host (1), thereby completing the process of moving the screen and changing the screen; S5, when the filter screen (11) is moving, it will be in contact with and squeezed by the splitting component, and under the action of the splitting component, it will be cut and layered, so that the waste filter screen (11) and the waste plastic plate (10) can be automatically separated, and the waste filter screen (11) and the waste plastic plate (10) can be independently recycled; S6. If one of the net reels (17) is used up during the net-moving process, a new net reel (17) is replaced and inserted into the filter host (1) after the replacement. During the replacement process, the filter host (1) always has the filter net (11) in it, which will not affect the filtering process, thereby achieving continuous net-moving without stopping the machine.

Images