Screen exchanger cleaning device

Abstract

The utility model discloses a screen exchanger cleaning device which comprises a screen exchanger installed on a base and a screen plate installed on the screen exchanger, a first filter screen is installed in the middle of the screen plate, a first electric sliding table is installed on one side of the screen exchanger, a sleeve and a motor are installed at the movable end of the first electric sliding table, and a rotatable supply pipe is installed on the inner ring of the sleeve. One end of the supply pipe is connected with the power output end of the motor, and a cleaning head corresponding to the first filter screen is installed at the end, close to the screen plate, of the supply pipe. The cleaning device has the advantages that the water supply pipe arranged on the sleeve can provide water for the cleaning head through the water supply pipe to flush the first filter screen, and after cleaning is finished, hot air is provided for the cleaning head through the air supply pipe to dry water stains left on the first filter screen, so that the water stains on the first filter screen can be effectively prevented from being left; the dryness of the first filter screen is ensured, so that the situation that water stains enter the screen exchanger along with the first filter screen to cause badness of injection molding products is avoided, and the processing quality of the screen exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen changers, in particular to a cleaning device for a screen changer. Background Art

[0002] A screen changer is a manually or automatically switchable device consisting of one or more screens, designed to remove foreign particles and impurities as the plasticized material flows through the screens. The screens are supported by a porous alloy plate mounted on a plate or column-type support that can be moved between a system's operating position and an offline, non-operating position. The screen changer can be installed on any new or existing extruder, melt pump, reactor, or other extrusion line. It can be used to filter any type of polymer, rubber, or ceramic melt.

[0003] The existing technology has the following technical problems:

[0004] Chinese patent CN210283171U provides a hydraulic screen changer cleaning device, which can clean the filter screen in the hydraulic screen changer and reuse the filter screen. However, after the filter screen is cleaned during use, water stains are likely to remain on the surface of the filter screen. The residual water stains are likely to enter the injection molding machine cavity along with the plasticized material when the filter screen filters the plasticized material, causing quality defects such as pores and bubbles in the plasticized product.

[0005] For this reason, we propose a screen changer cleaning device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art in that after the filter screen is cleaned during use, water stains are easily left on the surface of the filter screen. The residual water stains are easily introduced into the injection molding machine cavity along with the plasticized material when the filter screen filters the plasticized material, causing quality defects such as pores and bubbles in the plasticized product. A screen changer cleaning device is provided.

[0007] The purpose of the utility model is achieved through the following technical solutions: a screen changer cleaning device, comprising a screen changer mounted on a base and a screen plate mounted on the screen changer, a first filter screen mounted in the middle of the screen plate, a first electric slide mounted on one side of the screen changer, a sleeve and a motor mounted on the movable end of the first electric slide, a rotatable supply pipe mounted on the inner ring of the sleeve, one end of the supply pipe connected to the power output end of the motor, and a cleaning head corresponding to the first filter screen mounted on the end of the supply pipe close to the screen plate;

[0008] An air supply pipe and a water supply pipe are respectively installed on the sleeve. The supply pipe is provided with a through groove in a circumferential array. The through groove is located inside the sleeve. The air supply pipe and the water supply pipe are connected to the supply pipe through the through groove. The air outlet end of the supply pipe is connected to the cleaning head, the air supply pipe is connected to an external hot air source, and the water supply pipe is connected to a water tank. The water supply pipe on the sleeve can provide water to the cleaning head through the supply pipe to flush the first filter. After cleaning, hot air is provided to the cleaning head through the air supply pipe to dry the water stains remaining on the first filter. This can effectively avoid water stains remaining on the first filter, ensure the dryness of the first filter, thereby avoiding water stains from entering the screen changer with the first filter, resulting in defective injection molded products, and improving the processing quality of the screen changer.

[0009] A further technical solution is that a water tank is arranged below the mesh plate, a second filter is installed between the water tank and the mesh plate, a water pump is installed at the inner bottom of the water tank, and the water outlet of the water pump is connected to the water supply pipe. By setting the second filter screen, the cleaning water of the first filter screen can be recovered and filtered, and reused through the water pump, effectively saving water resources.

[0010] A further technical solution is that the second filter is detachably installed on the base, and a block is provided on the base above the water tank. The second filter is placed on the block. By placing the second filter on the block, the efficiency of disassembly of the second filter can be improved and the convenience of operation can be improved.

[0011] A further technical solution is that a through hole and a brush are provided on the cleaning head, the through holes and the brush are arranged alternately, and the through holes are connected to the supply pipe. Water is flushed or hot air is blown to the first filter through the through holes on the cleaning head, and a motor is provided to drive the supply pipe and the cleaning head to rotate, so that the through holes and the brush on the cleaning head rotate to clean the first filter, thereby improving the cleaning efficiency of the first filter.

[0012] A further technical solution is that a second electric slide is installed on the side of the screen changer away from the cleaning head, and a water shield corresponding to the cleaning head is installed on the movable end of the second electric slide. By setting the water shield, the clean water can be prevented from overflowing, and water resources can be effectively recovered.

[0013] A further technical solution is that the air supply pipe is installed on the upper part of the casing, and an air valve is installed on the air supply pipe. By setting the air valve, the air supply pipe can be opened and closed to prevent clean water from entering the external hot air source equipment through the air supply pipe and causing damage.

[0014] A further technical solution is that two sets of sealing grooves are opened on the supply pipe, and the two sets of sealing grooves are located on both sides of the through groove. A sealing ring is installed in the sleeve and is slidably connected to the sealing groove. By setting the sealing groove and the sealing ring in combination, the sealing effect between the sleeve and the supply pipe can be effectively improved.

[0015] A further technical solution is that the air supply pipe and the water supply pipe use corrugated hoses. Setting the air supply pipe and the water supply pipe as corrugated hoses can increase the expansion and contraction margin to a certain extent, ensuring the normal operation of the equipment.

[0016] The utility model has the following advantages: the water supply pipe on the sleeve is arranged in the utility model, which can provide water to the cleaning head through the supply pipe to flush the first filter screen. After cleaning, hot air is provided to the cleaning head through the air supply pipe to dry the water stains remaining on the first filter screen, which can effectively avoid water stains remaining on the first filter screen and ensure the dryness of the first filter screen, thereby avoiding water stains from entering the screen changer with the first filter screen and causing defects in injection molded products, thereby improving the processing quality of the screen changer. By arranging the second filter screen, the cleaning water of the first filter screen can be recovered and filtered, and reused through a water pump, thereby effectively saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the sleeve structure of the present utility model;

[0019] Figure 3 This is a schematic diagram of a partial three-dimensional structure of the supply pipe of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the cleaning head of the present utility model;

[0021] In the figure, 1. screen changer; 2. screen plate; 3. first filter screen; 4. first electric slide; 5. sleeve; 6. supply pipe; 7. cleaning head; 701. through hole; 702. brush; 8. motor; 9. air supply pipe; 10. air valve; 11. water supply pipe; 12. water pump; 13. second filter screen; 14. block; 15. water tank; 16. second electric slide; 17. water shield; 18. through groove; 19. sealing groove; 20. sealing ring. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 4As shown, a screen changer cleaning device includes a screen changer 1 installed on a base and a screen plate 2 installed on the screen changer 1, a first filter 3 is installed in the middle of the screen plate 2, a first electric slide 4 is installed on one side of the screen changer 1, a sleeve 5 and a motor 8 are installed on the moving end of the first electric slide 4, a rotatable supply pipe 6 is installed on the inner ring of the sleeve 5, one end of the supply pipe 6 is connected to the power output end of the motor 8, and a cleaning head 7 corresponding to the first filter 3 is installed on the end of the supply pipe 6 close to the screen plate 2, an air supply pipe 9 and a water supply pipe 11 are respectively installed on the sleeve 5, and a through groove 18 in a circumferential array is opened on the supply pipe 6. The through groove 18 is located in the sleeve 5, and the air supply pipe 9 and the water supply pipe 11 are both connected to the supply pipe 6 through the through groove 18, the air outlet end of the supply pipe 6 is connected to the cleaning head 7, the air supply pipe 9 is connected to the external hot air source, and the water supply pipe 11 is connected to the water tank 15. The water supply pipe 11 arranged on the sleeve 5 can provide water to the cleaning head 7 through the supply pipe 6 to flush the first filter 3. After cleaning, hot air is provided to the cleaning head 7 through the air supply pipe 9 to dry the residual water stains on the first filter 3, which can effectively avoid the residual water stains on the first filter 3, ensure the dryness of the first filter 3, thereby avoiding the water stains from entering the screen changer 1 with the first filter 3, resulting in defective injection molded products, and improving the processing quality of the screen changer 1.

[0029] The water storage tank 15 is arranged below the mesh plate 2, and a second filter screen 13 is installed between the water storage tank 15 and the mesh plate 2. A water pump 12 is installed at the inner bottom of the water storage tank 15, and the water outlet end of the water pump 12 is connected to the water supply pipe 11. By setting the second filter screen 13, the cleaning water of the first filter screen 3 can be recycled and filtered, and reused by the water pump 12, which effectively saves water resources. The second filter screen 13 is detachably installed on the base, and a block 14 is provided on the base above the water storage tank 15. The second filter screen 13 is placed on the block 14. By setting the second filter screen 13 Placing the second filter 13 on the block 14 can improve the disassembly efficiency of the second filter 13 and improve the convenience of operation. The cleaning head 7 is provided with a through hole 701 and a brush 702. The through hole 701 and the brush 702 are arranged alternately. The through hole 701 is connected to the supply pipe 6. The through hole 701 on the cleaning head 7 is provided to flush water or blow hot air to the first filter 3. The motor 8 is provided to drive the supply pipe 6 and the cleaning head 7 to rotate, so that the through hole 701 and the brush 702 on the cleaning head 7 rotate to clean the first filter 3, thereby improving the cleaning efficiency of the first filter 3.

[0030] A second electric slide 16 is installed on the side of the screen changer 1 away from the cleaning head 7, and a water shield 17 corresponding to the cleaning head 7 is installed at the movable end of the second electric slide 16. By setting the water shield 17, the clean water can be prevented from overflowing, and the water resources can be effectively recovered. The air supply pipe 9 is installed on the upper part of the sleeve 5, and an air valve 10 is installed on the air supply pipe 9. By setting the air valve 10, the air supply pipe 9 can be opened and closed to prevent the clean water from entering the external hot air source equipment through the air supply pipe 9 and causing damage. Two groups of sealing grooves 19 are provided on the supply pipe 6, and the two groups of sealing grooves 19 are respectively located on both sides of the through groove 18. A sealing ring 20 that is slidably connected to the sealing groove 19 is installed in the sleeve 5. By setting the sealing groove 19 and the sealing ring 20, the sealing effect between the sleeve 5 and the supply pipe 6 can be effectively improved. The air supply pipe 9 and the water supply pipe 11 adopt corrugated hoses. Setting the air supply pipe 9 and the water supply pipe 11 as corrugated hoses can increase a certain amount of expansion and contraction margin to ensure the normal operation of the equipment.

[0031] The working process of the present invention is as follows: during use of the device, when the screen plate 2 on the screen changer 1 takes the first filter 3 out for cleaning, the first electric slide 4 first drives the sleeve 5 and the motor 8 to move toward the first filter 3, so that the cleaning head 7 contacts the first filter 3. At the same time, the second electric slide 16 drives the water shield 17 to move to the other side of the first filter 3, and the water pump 12 and the motor 8 are started. The water pump 12 transports the clean water in the water tank 15 through the water supply pipe 11 to the supply pipe 6 through the through hole 701 to clean the first filter 3. At the same time, the motor 8 drives the cleaning head 7 to rotate through the supply pipe 6, so that the brush 702 on the cleaning head 7 cleans the first filter 3. The cleaning water is blocked by the water shield 17 and filtered through the second filter 13 and falls into the water tank 15 for reuse. After cleaning, the air valve 10 is opened, allowing the external hot air source to dry the first filter 3 through the through hole 701. After drying, the second electric slide 16 and the first electric slide 4 drive the device to reset.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screen changer cleaning device, comprising a screen changer (1) mounted on a base and a screen plate (2) mounted on the screen changer (1), wherein a first filter screen (3) is mounted in the middle of the screen plate (2), characterized in that: A first electric slide (4) is installed on one side of the screen changer (1), a sleeve (5) and a motor (8) are installed on the movable end of the first electric slide (4), a rotatable supply pipe (6) is installed on the inner ring of the sleeve (5), one end of the supply pipe (6) is connected to the power output end of the motor (8), and a cleaning head (7) corresponding to the first filter (3) is installed on the end of the supply pipe (6) close to the screen plate (2); An air supply pipe (9) and a water supply pipe (11) are provided. The supply pipe (6) is provided with through grooves (18) in a circumferential array. The through grooves (18) are located in the sleeve (5). The air supply pipe (9) and the water supply pipe (11) are both connected to the supply pipe (6) through the through grooves (18). The air outlet end of the supply pipe (6) is connected to the cleaning head (7). The air supply pipe (9) is connected to an external hot air source. The water supply pipe (11) is connected to a water storage tank (15).

2. A screen changer cleaning device according to claim 1, characterized in that: The water storage tank (15) is arranged below the mesh plate (2), a second filter screen (13) is installed between the water storage tank (15) and the mesh plate (2), a water pump (12) is installed at the inner bottom of the water storage tank (15), and the water outlet end of the water pump (12) is connected to the water supply pipe (11).

3. A screen changer cleaning device according to claim 2, characterized in that: The second filter screen (13) is detachably mounted on a base, and a stopper (14) located above the water storage tank (15) is provided on the base, and the second filter screen (13) is placed on the stopper (14).

4. A screen changer cleaning device according to claim 1, characterized in that: The cleaning head (7) is provided with a through hole (701) and a brush (702), the through hole (701) and the brush (702) are arranged in an alternating manner, and the through hole (701) is connected to the supply pipe (6).

5. The screen changer cleaning device according to claim 1, characterized in that: A second electric slide (16) is installed on the side of the screen changer (1) away from the cleaning head (7), and a water shield (17) corresponding to the cleaning head (7) is installed on the movable end of the second electric slide (16).

6. The screen changer cleaning device according to claim 1, characterized in that: The air supply pipe (9) is installed on the upper part of the sleeve (5), and an air valve (10) is installed on the air supply pipe (9).

7. The screen changer cleaning device according to claim 1, characterized in that: Two groups of sealing grooves (19) are provided on the supply pipe (6), and the two groups of sealing grooves (19) are respectively located on both sides of the through groove (18). A sealing ring (20) is installed in the sleeve (5) and is slidably connected to the sealing grooves (19).

8. The screen changer cleaning device according to claim 1, characterized in that: The air supply pipe (9) and the water supply pipe (11) are corrugated hoses.

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