阅读说明：本技术 具有在线清洗功能的epp造粒挤出机过滤装置 (EPP granulation extruder filter equipment with online cleaning function ) 是由 钱江 钱东 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种具有在线清洗功能的EPP造粒挤出机过滤装置,包括设置于EPP造粒挤出机的料筒和机头之间的过滤箱,其内设有流道,其特征在于流道上前后分布有两块滤网,而过滤箱顶部设有分别驱动两块滤网上下升降的两个滤网升降驱动装置；过滤箱一旁设滤网冲洗装置,其包括台盆支架、置其上的台盆和置于台盆支架一侧的电控喷淋装置；还包括对应每个滤网升降驱动装置设置的转移驱动机构,用于将滤网升降驱动装置连带滤网一同转移至台盆上方,以供电控喷淋装置喷淋清洗滤网。本装置能对滤网实施自动清洗,并且清洗时无需停机,也不会提高流道负荷,因此具有较高的工作效率和工作可靠性。(The invention discloses a filtering device of an EPP (expanded polypropylene) granulation extruder with an online cleaning function, which comprises a filtering box arranged between a charging barrel and a machine head of the EPP granulation extruder, wherein a flow passage is arranged in the filtering box; a filter screen flushing device is arranged beside the filter box and comprises a basin bracket, a basin arranged on the basin bracket and an electric control spraying device arranged on one side of the basin bracket; the device also comprises a transfer driving mechanism which is arranged corresponding to each filter screen lifting driving device and is used for transferring the filter screen lifting driving devices together with the filter screens to the upper part of the counter basin so as to supply the power-controlled spraying device to spray and clean the filter screens. The device can automatically clean the filter screen, does not need to be stopped during cleaning, and can not improve the load of the flow channel, thereby having higher working efficiency and working reliability.)

1. A EPP granulation extruder filtering device with an online cleaning function comprises a filtering box (3) arranged between a charging barrel (1) and a machine head (2) of the EPP granulation extruder, wherein a flow channel is arranged in the filtering box (3), and the EPP granulation extruder filtering device is characterized in that two filtering nets (4) are distributed on the flow channel in the front and at the back, and two filtering net lifting driving devices are arranged at the top of the filtering box (3) and are respectively used for driving the two filtering nets (4) to lift up and down; a filter screen flushing device is arranged beside the filter box (3) and comprises a basin support (5), a basin (6) arranged on the basin support (5) and an electric control spraying device arranged on one side of the basin support (5); still including the transfer actuating mechanism that corresponds every filter screen lift drive arrangement and set up for together shift to counter basin (6) top filter screen lift drive arrangement with filter screen (4), spray and wash filter screen (4) for power supply accuse spray set, this kind of transfer actuating mechanism includes actuating mechanism support frame (7), fixed filter screen lift drive arrangement's mounting panel (8) and sets up the translation drive arrangement who connects and drive mounting panel (8) and remove on actuating mechanism support frame (7).

2. The EPP granulation extruder filtering device with the online cleaning function as claimed in claim 1, further comprising a PLC controller, wherein the filter screen lifting driving device, the translation driving device and the electrically controlled spraying device are electrically connected with the PLC controller.

3. The EPP granulation extruder filtering device with the on-line cleaning function according to claim 2, further comprising a drying device disposed at one side of the basin support (5) for drying the filter screen (4), and the drying device is also electrically connected with the PLC controller.

4. The EPP granulation extruder filtering device with the on-line cleaning function according to claim 3, characterized in that the drying device is composed of at least one drying unit mechanism, the drying unit mechanism comprises an air supply pipe (9), an air supply flaring (10) arranged on the air supply pipe (9) and facing the filter screen (4), and a drying fan (11) connected with the air supply pipe (9), and the drying fan (11) is electrically connected with the PLC.

5. The EPP granulation extruder filtering device with the on-line cleaning function according to claim 2, wherein the electrically controlled spraying device is composed of at least one electrically controlled spraying unit mechanism, the electrically controlled spraying unit mechanism comprises a water supply pipe (12) and an electrically controlled spraying head (13) which is arranged on the water supply pipe (12) and is directed to the filter screen (4) and is used for washing the filter screen (4) transferred above the platform basin (6), and the electrically controlled spraying head (13) is connected with the PLC controller.

6. The EPP granulation extruder filtering device with the online cleaning function as claimed in claim 5, wherein the spraying directions of the electrically controlled spraying unit mechanisms are all opposite to the material conveying direction of the extruder.

7. EPP pelletizing extruder filtering device with in-line cleaning function according to claim 2, characterized in that the translation drive is a servo cylinder (14).

8. The EPP granulation extruder filtering device with the on-line cleaning function according to claim 7, wherein the servo cylinder (14) comprises a guide rail (14 a) fixed on the driving mechanism support frame (7), a servo motor (14 b) fixed at one end of the guide rail (14 a), a screw rod (14 c) connected with the output shaft of the servo motor (14 b) and a slide block (14 d) matched with the guide rail (14 a), the slide block (14 d) is provided with a nut hole matched with the screw rod (14 c), the mounting plate (8) is fixed with the slide block (14 d), and the servo motor (14 b) is electrically connected with the PLC.

9. The EPP granulation extruder filtering device with the on-line cleaning function according to claim 8, wherein the guide rail (14 a) is a groove-shaped guide rail comprising left and right guide bars and a groove between the left and right guide bars, the mounting plate (8) is supported on the top of the left and right guide bars; and the bottom section of the sliding block (14 d) is in an inverted trapezoid shape and is matched with the shape of the lower part of the slot.

10. The EPP granulation extruder filtering device with the online cleaning function according to claim 1, wherein the filter screen lifting driving device is an air cylinder (15), a connecting clamping block (16) is fixed on a top rod (15 a) of the air cylinder (15), and the connecting clamping block (16) is detachably fixed with the outer frame of the filter screen (4) through a bolt; and the top of the filter box (3) corresponds to each filter screen (4) and is provided with a through groove for the corresponding filter screen (4) to pass in and out, and the periphery of the through groove is provided with a circle of high-temperature-resistant sealing ring.

Technical Field

The invention relates to a machine head filtering device of an EPP (expanded polypropylene) granulating extruder, in particular to a filtering device of an EPP granulating extruder with an online cleaning function.

Background

The production equipment that adopts in the production of EPP granulation is mostly screw extruder, mainly constitutes the feed cylinder including aircraft nose and built-in screw rod, and the hot melt material is through aircraft nose extrusion moulding again after the inside screw rod of feed cylinder is rotatory output, because often smuggleing some infusible impurity in the hot melt material, consequently often set up filter equipment in the known equipment inside the aircraft nose and further filter impurity.

The existing filtering device mainly is a mechanism arranged inside a shell of a connecting section of a charging barrel and a machine head, and mainly comprises a frame clamped on a flow passage wall and a filter screen stuck on the frame, and the filtering device has the following problems in practical use:

the filter screen needs to be changed after a period of time of use, but the existing equipment needs to be disassembled and replaced by lifting the shell, has complex operation, wastes time and labor, and leads to low efficiency and stagnation of production when the extruder needs to be stopped during replacement, thereby causing certain loss for enterprises.

The core of the device is a set of filter screen alternate replacement mechanism, the inside of a filter box of the mechanism adopts a parallel flow channel design, and the filter screens are alternately lifted and lowered through two sets of filter screen moving mechanisms to block the flow channel. One set of filter screen is replaced after being moved out of the filter box, and the other set of filter screen can be continuously used. However, in long-term use, such systems expose the following problems:

1) after the filter screen is lifted, the filter screen needs to be manually disassembled and replaced after being cooled, and the disassembled filter screen needs to be transferred to other places for cleaning, so that the production procedures are increased undoubtedly, and the working efficiency of the whole process is low;

2) because the parallel flow channels are adopted, the flow channel baffle plate is required to be used for shielding the flow channel after one filter screen is lifted, at the moment, two flow channels are changed into only one flow channel for use, the load of the flow channel is increased, the filtering effect is reduced, and the service life of equipment elements is also reduced.

3) The filter screen is manually assembled, disassembled, transferred and cleaned, which undoubtedly increases the labor cost of enterprises.

Disclosure of Invention

The invention aims to: the utility model provides an EPP granulation extruder filter equipment with online cleaning function, this kind of filter equipment can implement self-cleaning to the filter screen to need not to shut down during the washing, can not improve the runner load yet, can improve the operating efficiency greatly, ensure the holistic operational reliability of filter equipment simultaneously.

The technical scheme of the invention is as follows: a EPP granulation extruder filtering device with an online cleaning function comprises a filtering box arranged between a charging barrel and a machine head of the EPP granulation extruder, wherein a flow channel is arranged in the filtering box; a filter screen flushing device is arranged beside the filter box and comprises a counter basin bracket, a counter basin arranged on the counter basin bracket and an electric control spraying device arranged on one side of the counter basin bracket; the filter screen cleaning device is characterized by further comprising a transfer driving mechanism corresponding to each filter screen lifting driving device, the transfer driving mechanism is used for transferring the filter screen lifting driving devices together with the filter screens to the upper portion of the counter basin so as to spray and clean the filter screens for the power control spraying device, and the transfer driving mechanism comprises a driving mechanism support frame, a mounting plate for fixing the filter screen lifting driving devices and a translation driving device which is arranged on the driving mechanism support frame and is connected with the driving mechanism support frame and drives the mounting plate to move.

The filter screen lifting driving device, the electric control spraying device and the transfer driving mechanism can be manually controlled and cooperatively operated. Certainly, in order to improve the automation characteristic of the invention, the invention further comprises a PLC controller, and the filter screen lifting driving device, the translation driving device and the electric control spraying device are all electrically connected with the PLC controller.

Furthermore, the invention also comprises a drying device which is arranged on one side of the platform basin bracket and is used for drying the filter screen, and the drying device is also electrically connected with the PLC.

In practical implementation, the drying device provided by the invention comprises at least one drying unit mechanism, the drying unit mechanism comprises an air supply pipe, an air supply flaring which is arranged on the air supply pipe and faces the filter screen, and a drying fan which is connected with the air supply pipe, and the drying fan is electrically connected with the PLC.

Furthermore, the electric control spraying device comprises at least one electric control spraying unit mechanism, the electric control spraying unit mechanism comprises a water supply pipe and an electric control spray head which is arranged on the water supply pipe and points to the filter screen and is used for washing the filter screen transferred above the counter basin, and the electric control spray head is connected with the PLC. During actual installation, the water supply pipe is connected with a water supply pipeline of a factory or a tap water faucet through a leather hose.

Furthermore, the spraying directions of the electric control spraying unit mechanisms in the invention are all opposite to the material transfer direction of the extruder, so that dirt on the filter screen can be washed better.

Furthermore, the translation driving device is a servo cylinder.

Still further, the servo cylinder comprises a guide rail fixed on the support frame of the driving mechanism, a servo motor fixed at one end of the guide rail, a screw rod connected with an output shaft of the servo motor and a sliding block matched with the guide rail, a nut hole is formed in the sliding block and matched with the screw rod, the mounting plate is fixed with the sliding block, and the servo motor is electrically connected with the PLC.

Preferably, the guide rail is a groove-shaped guide rail and comprises a left guide bar, a right guide bar and a groove positioned between the left guide bar and the right guide bar, and the mounting plate is supported at the tops of the left guide bar and the right guide bar; the cross section of the bottom of the sliding block is in an inverted trapezoid shape and is matched with the shape of the lower part of the slot.

Further, the filter screen lifting driving device selects an air cylinder, a connecting clamping block is fixed on an ejector rod of the air cylinder, and the connecting clamping block is detachably fixed with an outer frame of the filter screen through a bolt; and the top of the filter box is provided with a through groove for the corresponding filter screen to pass in and out corresponding to each filter screen, and the periphery of the through groove is provided with a circle of high-temperature-resistant sealing ring. Of course, the screen lifting driving device can also select a servo cylinder or a linear motor and the like as well as the known technology.

The use principle of the invention is as follows:

initially, one of the two screens is inserted into the filter box to block the flow path for filtration.

The inside operating time who predetermines the filter screen of PLC controller, for example change after working 6 hours, so when filter screen work full 6 hours after, PLC controller drive filter screen lift drive device work, rise this filter screen, drive another filter screen lift drive device operation simultaneously and keep off corresponding filter screen down and continue work on the runner.

And then, the PLC drives the transfer driving mechanism to act, the filter screen lifting driving device and the lifted filter screen are moved to the upper part of the counter basin together, the PLC drives the electric control spraying device to spray water to clean the filter screen, the cleaned filter screen is dried, finally the dried filter screen is moved back to the upper part of the filter box again to wait for the next alternative use with the filter screen in work, and the process is repeated, so that the online efficient filter screen cleaning operation is realized, the working reliability and the continuity of the extruder are ensured, the working time is greatly saved finally, and the working efficiency is improved.

In the prior art, the process of manually loading, unloading, transferring and cleaning the filter screen consumes 1-2 hours at least, the device completely realizes the automatic cleaning of the online filter screen, the whole process can be completed in 10-15 minutes, the efficiency is greatly improved, and the production is not interrupted.

The invention has the advantages that:

1. the automatic cleaning device can automatically clean the filter screen, the filter screen is directly conveyed to the electric control spraying device by the transfer driving mechanism to be rapidly cleaned, and the filter screen is not required to be manually and complexly disassembled and transferred as in the prior art; and because two filter screens are distributed in the front and back and are used alternately, the flow channel is not required to be blocked unlike the prior art, so that the load of the flow channel is not improved, the working efficiency is improved, and the integral working reliability of the filter device is ensured.

2. When one filter screen is moved out for cleaning, the other filter screen is lowered to ensure that the materials are filtered, and the extruder does not need to be stopped in the whole process, so that the production continuity can be improved, and the enterprise loss is greatly reduced. And the filter screen that finishes washs can send the rose box back again with the help of transferring actuating mechanism and filter screen lift drive, and whole process need not artifical the participation, save time and enterprise's recruitment cost, and is swift high-efficient.

3. According to the invention, a drying device is further added to dry the filter screen, so that the drying speed of the filter screen is increased, water is prevented from being brought into the filter box, and the integral working reliability of the extruder is ensured.

4. The invention implements special design to the guide rail and the sliding block of the servo cylinder, has simple and compact structure and better conveying stability.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a front view of the structure of the present invention (both screens raised);

FIG. 2 is a front view of the structure of the present invention in its working position (one screen down and one screen up);

FIG. 3 is a view taken along line A-A of FIG. 1;

fig. 4 is a view from the direction B-B of fig. 2.

Wherein: 1. a charging barrel; 2. a machine head; 3. a filter box; 4. filtering with a screen; 5. a basin stand; 6. a counter basin; 7. a driving mechanism support frame; 8. mounting a plate; 9. an air supply pipe; 10. air supply flaring; 11. drying the fan; 12. a water supply pipe; 13. an electrically controlled spray head; 14. a servo cylinder; 14a, a guide rail; 14b, a servo motor; 14c, a screw rod; 14d, a slide block; 15. a cylinder; 15a, a mandril; 16. and connecting the clamping blocks.

Detailed Description

Example (b): the following will be described with reference to fig. 1 to 4, specifically, the embodiment of the filtration device of the EPP granulation extruder with an on-line cleaning function provided by the present invention is as follows:

the EPP granulation extruder filtering device with the online cleaning function is composed of a filtering box 3 arranged between a charging barrel 1 and a machine head 2 of the EPP granulation extruder, two filtering nets 4 which are distributed in the front and back of a flow passage in the filtering box 3, two filtering net lifting driving devices which are arranged at the top of the filtering box 3 and are respectively used for driving the two filtering nets 4 to lift up and down, a filtering net flushing device arranged beside the filtering box 3, a transfer driving mechanism which is used for transferring the corresponding filtering net lifting driving devices together with the filtering nets 4 to the filtering net flushing device to clean, a drying device and a PLC (omitted in the figure) together.

As in the prior art, in this embodiment, both of the two filter screen lifting driving devices are air cylinders 15, a connecting clamp block 16 is fixed on a top rod 15a of the air cylinder 15, and the connecting clamp block 16 is detachably fixed with the outer frame of the filter screen 4 through a bolt; and the top of the filter box 3 is provided with a through groove corresponding to each filter screen 4 for the corresponding filter screen 4 to pass in and out, and the periphery of the through groove is provided with a circle of high-temperature-resistant sealing ring (not visible in the figure). The air cylinder 15 is electrically connected with the PLC.

Referring to fig. 1 to 4, in this embodiment, the filter screen washing device is composed of a basin support 5, a basin 6 disposed on the basin support 5, and an electric control spraying device disposed on one side of the basin support 5, wherein the electric control spraying device is composed of an electric control spraying unit mechanism, the electric control spraying unit mechanism is composed of a water supply pipe 12 and an electric control nozzle 13 disposed on the water supply pipe 12 and pointing to the filter screen 4, and is used for washing the filter screen 4 transferred above the basin 6, and the electric control nozzle 13 is electrically connected with the PLC controller. The water supply pipe is connected to the water supply line of the factory during actual installation. When the extruder works, the hot melt material in the extruder flows from the barrel to the head, so that when the filter screen 4 filters, dirt is intercepted and hung on one surface of the filter screen 4 facing the barrel 1. In the present case, as shown in fig. 1 and fig. 2, the arrangement direction of the electrically controlled spraying nozzle 13 (i.e. the spraying direction of the water flow) is opposite to the material conveying direction of the extruder, so as to wash away the dirt on the filter screen 4 in the opposite direction.

Referring to fig. 1 and 2, the drying apparatus in this embodiment is composed of a drying unit mechanism, the drying unit mechanism is composed of an air supply pipe 9, an air supply flared opening 10 disposed on the air supply pipe 9 and facing the filter screen 4, and a drying fan 11 connected to the air supply pipe 9, and the drying fan 11 is electrically connected to the PLC controller. The wind-supplying flaring 10 is opposite to the electric control spray head 13 in the direction of the present embodiment.

Referring to fig. 1 to 4, each transfer driving mechanism in this embodiment is composed of a driving mechanism supporting frame 7, a mounting plate 8 for fixing the air cylinder 15, and a translation driving device disposed on the driving mechanism supporting frame 7 and connected to and driving the mounting plate 8 to move. The driving mechanism support frame 7 in this embodiment is composed of two long vertical rods supported on the ground and four short vertical rods supported on the filter box 3 of the EPP granulation extruder.

The translation driving device in this embodiment is a servo cylinder 14, the servo cylinder 14 is composed of a guide rail 14a fixed on the driving mechanism support frame 7, a servo motor 14b fixed at one end of the guide rail 14a, a screw rod 14c connected with an output shaft of the servo motor 14b, and a slide block 14d matched with the guide rail 14a, a nut hole matched with the screw rod 14c is arranged on the slide block 14d, and the mounting plate 8 is fixed on the top of the slide block 14 d. The servo motor 14b of the servo cylinder 14 is electrically connected to the PLC controller.

Referring to fig. 1 and 2, in the present embodiment, the guide rail 14a is a groove-shaped guide rail, and includes left and right guide bars and a groove between the left and right guide bars, and the mounting plate 8 is supported on the top of the left and right guide bars; and the bottom section of the slider 14d is in the shape of an inverted trapezoid and matches the shape of the lower part of the slot.

The use principle of the invention is as follows:

initially, one of the two sieves 4 is inserted in the filtering box 3, blocking the filtering operation on the flow path, for example the insertion of the sieve 4 on the left in fig. 1.

The PLC is internally provided with the working time of the filter screen 4, for example, the filter screen 4 is replaced after working for 6 hours, and then when the left filter screen 4 works for 6 hours, the PLC drives the air cylinder 15 to work, so as to lift the filter screen 4, and simultaneously drives another air cylinder 15 to work, so as to lower the right filter screen 4 to keep on working on the flow channel, as shown in fig. 2 and 3.

Then, the PLC drives the transfer driving mechanism to act, the air cylinder 15 with the lifted left filter screen 4 is moved to the position above the counter basin 6, as shown in fig. 4, the PLC drives the electric control spraying device to spray water to clean the filter screen 4, the cleaned filter screen is dried, finally the dried filter screen 4 is moved back to the position above the filter box 3 again, the filter screen is waited to be used alternately with the right filter screen 4 in work, and the process is repeated, so that the online efficient filter screen cleaning operation is realized, the working reliability and the continuity of the extruder are ensured, the working time is saved greatly, and the working efficiency is improved.

In the prior art, the process of manually loading, unloading, transferring and cleaning the filter screen consumes 1-2 hours at least, the device completely realizes the automatic cleaning of the online filter screen, the whole process can be completed in 10-15 minutes, the efficiency is greatly improved, and the production is not interrupted.

It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.