Polyester melt filter element cleaning device

Abstract

The utility model provides a polyester melt filter element cleaning device which comprises a shell, the upper portions of the front side and the rear side of the shell are open, a top plate is movably arranged above the shell through a lifting mechanism, hollow seats are arranged on the top plate at intervals, and connecting seats with internal threads are formed at the lower ends of the hollow seats located at the lower end of the top plate. A cleaning pipe coaxial with the hollow seat is arranged in the hollow seat, and nozzles are uniformly formed in the cleaning pipe below the connecting seat; a supporting frame is arranged above the top plate, a closed water pipe is arranged on the supporting frame, one end of the closed water pipe communicates with a high-pressure water source through a reserved opening, a water distribution pipe is arranged at the position, corresponding to the cleaning pipe, of one side of the closed water pipe, and a first electromagnetic valve is arranged on the water distribution pipe; and the other end of the first electromagnetic valve is communicated with the cleaning pipe. The device belongs to semi-automatic equipment, mainly realizes automatic cleaning of the inner side of the filter element, and reduces the working intensity of operators.

Description

Technical Field

[0001] This utility model belongs to the field of polyester production technology, and in particular relates to a polyester melt filter core cleaning device. Background Technology

[0002] Melt filters are a crucial part of polyester production. Their main function is to separate particles and impurities contained in the melt, ensuring the cleanliness of the material after passing through the filter and not affecting subsequent processes. However, after a period of use, impurities adhere to the filter element, reducing its filtration performance. The filter element must be cleaned before it can be used again.

[0003] There are many methods for cleaning melt filter cartridges. Our company uses triethylene glycol hydrolysis, and the process is as follows: triethylene glycol cleaning, water washing, alkaline washing, high-pressure water rinsing, ultrasonic rinsing, and drying. Specifically, when triethylene glycol is heated to 280 degrees Celsius, it has an alcoholysis and dissolving effect on the high-molecular-weight polyester. Alkaline washing removes organic matter, high-pressure water rinsing removes inorganic residues, titanium dioxide, and carbon black adhering to the filter cartridge surface, and ultrasonic cleaning removes inorganic matter.

[0004] Currently, the high-pressure water rinsing stage is mainly done manually. Operators first use a high-pressure water gun to clean the inside and outside of each filter element in sequence. After cleaning, a high-pressure air gun is used to clean the inside of each filter element to remove dust such as titanium dioxide and carbon black with strong adsorption capacity. This cleaning process takes the longest time and the workload of operators is very heavy. Utility Model Content

[0005] This utility model provides a polyester melt filter element cleaning device, which is a semi-automatic equipment. It mainly realizes the automatic cleaning of the inner side of the filter element, reducing the workload of operators.

[0006] The technical solution of this utility model is as follows:

[0007] A polyester melt filter element cleaning device includes a housing with open upper front and rear sides. Lifting mechanisms are located on the left and right outer sides of the housing. A top plate is movably mounted on the top of the housing via the lifting mechanisms. Hollow seats are spaced apart on the top plate, and a threaded connecting seat is formed at the lower end of each hollow seat. A cleaning pipe coaxial with the hollow seat is arranged inside the hollow seat. The upper end of the cleaning pipe extends out of the hollow seat and is fixed by a pipe clamp, while its lower end is closed and extends out of the connecting seat. Spray nozzles are evenly distributed on the cleaning pipe below the connecting seat. A support frame is mounted above the top plate, and a closed water pipe is mounted on the support frame. One end of the closed water pipe is connected to a high-pressure water source through a pre-reserved port. A water distribution pipe is located on one side of the closed water pipe, corresponding to the cleaning pipe. A first solenoid valve is mounted on the water distribution pipe, and the other end of the first solenoid valve is connected to the cleaning pipe.

[0008] Preferably, the support frame is also provided with a closed air pipe, one end of which is connected to a high-pressure air source through a reserved port. A branch air pipe is provided on the closed air pipe at a position corresponding to the cleaning pipe. A second solenoid valve is provided on the branch air pipe. A three-way pipe is connected to the upper end of the cleaning pipe. The two inlets of the three-way pipe are respectively connected to the first solenoid valve and the second solenoid valve.

[0009] Preferably, the lifting mechanism includes a support plate and a cylinder. The support plate is disposed on both outer sides of the housing, and the cylinder is disposed at the top center of the support plate. The telescopic shaft of the cylinder is vertically fixed to the bottom of the top plate. Two guide rods are vertically arranged on the support plate, and the free ends of the two guide rods pass through the top plate.

[0010] Preferably, bearing seats are spaced apart on the top plate, and the hollow seat is rotatably arranged in the bearing seats. A driven wheel is sleeved on the upper end of the hollow seat. A drive motor is vertically arranged on the rear side of the top plate through a bracket. A drive wheel is arranged on the lower output shaft of the drive motor. The drive wheel and the driven wheel are driven by a conveyor belt.

[0011] Preferably, a tensioning wheel that cooperates with the conveyor belt is rotatably disposed between the bearing seats located on the top plate via a fixed shaft.

[0012] Preferably, a protective cover is also provided above the top plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This polyester melt filter element cleaning device fixes the filter element with a hollow seat and makes the opening of the filter element face upward. At the same time, a cleaning tube with a length that is basically equal to the inner height of the filter element is arranged in the hollow seat, so as to realize high-pressure water washing and high-pressure air washing of the inner side of the filter element in stages. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure without the protective cover.

[0016] Figure 3 yes Figure 2 A structural diagram showing the structure after removing the supporting frame, enclosed water pipes, and enclosed air pipes.

[0017] Figure 4 yes Figure 2 Enlarged view of part A in the image.

[0018] Figure 5 This is a diagram showing the positional relationship between the hollow seat, the bearing, and the cleaning tube.

[0019] In the diagram: 1. Shell; 2. Top plate; 3. Hollow seat; 4. Cleaning pipe; 5. Nozzle; 6. Support frame; 7. Sealed water pipe; 8. Water distribution pipe; 9. First solenoid valve; 10. Sealed air pipe; 11. Air distribution pipe; 12. Second solenoid valve; 13. T-pipe; 14. Support plate; 15. Cylinder; 16. Guide rod; 17. Bearing seat; 18. Driven wheel; 19. Bracket; 20. Drive motor; 21. Drive wheel; 22. Conveyor belt; 23. Tensioning wheel; 24. Protective cover; 25. Round pipe fixing clamp; 26. Pipe clamp; 31. Connecting seat. Detailed Implementation

[0020] To further understand the invention's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings. The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] This utility model provides a polyester melt filter element cleaning device, including a housing 1. The upper front and rear sides of the housing are open, and a drain outlet is provided on one side of the lower part of the housing. Lifting mechanisms are provided on the left and right outer sides of the housing 1. A top plate 2 is movably mounted on the top of the housing 1 via the lifting mechanisms. Hollow seats 3 are spaced apart on the top plate 2. A connecting seat 31 with internal threads is formed at the lower end of the hollow seats 3 located at the lower end of the top plate. The internal thread of the connecting seat is adapted to the external thread at the top opening of the filter element, and the two are threadedly connected to achieve vertical fixation of the filter element. A cleaning tube 4 is arranged coaxially with the hollow seat 3. The upper end of the cleaning tube 4 extends out of the hollow seat and is fixed by a tube clamp 26, and its lower end is closed and extends out of the connecting seat 31. The bottom of the cleaning pipe 4 is close to the inner bottom of the filter element. Spray nozzles 5 are evenly distributed on the cleaning pipe 4 below the connecting seat 31. These circumferentially arranged nozzles clean the sidewalls of the filter element from the inside out. Several of the lowest nozzles are tangential to or even intersect with the inner bottom surface of the cleaning pipe to ensure water can drain from the bottom. A support frame 6 is installed above the top plate 2. A closed water pipe 7 is installed on the support frame 6 via a round pipe clamp 25. One end of the closed water pipe 7 is connected to a high-pressure water source through a pre-drilled opening. A water distribution pipe 8 is installed on one side of the closed water pipe 7, corresponding to the cleaning pipe. A first solenoid valve 9 is installed on the water distribution pipe 8, and the other end of the first solenoid valve 9 is connected to the cleaning pipe 4. The front and rear upper parts of the housing are open to observe the cleaning status of the filter element and to facilitate cleaning the outer side using a high-pressure water gun. A pipe clamp 26 is installed on the cleaning pipe above the hollow seat. This pipe clamp is fixed in a suitable position by a fixing rod to secure the cleaning pipe. In this embodiment, there are 3 hollow seats and 3 cleaning pipes. The pipe clamps on the cleaning pipes on both sides are fixed to the adjacent support frame by fixing rods, and the pipe clamps on the cleaning pipe in the middle are fixed to the motor bracket by fixing rods.

[0022] The lifting mechanism is primarily designed to control the raising and lowering of the entire top plate, thereby controlling the raising and lowering of the cleaning pipe. This facilitates the placement of the filter element onto the outside of the cleaning pipe and its connection to the connecting seat. In this embodiment, the lifting mechanism includes a support plate 14 and a cylinder 15. The support plate 14 is located on both outer sides of the housing 1, and the cylinder 15 is vertically arranged in the middle of the support plate 14. The telescopic shaft of the cylinder 15 is vertically fixed upwards to the bottom of the top plate 2. Two guide rods 16 are vertically arranged on the support plate 14, with their free ends passing through the top plate. The lifting mechanism is generally inactive. Before the filter element is installed onto the connecting seat, the cylinder is activated to move the top plate upwards until the bottom of the cleaning pipe is higher than the front and rear sides of the housing. This facilitates the placement of the filter element into the housing and its threaded connection to the connecting seat at the lower end of the hollow seat. Then, the top plate is lowered back to its original position to begin the cleaning process.

[0023] The first solenoid valve is controlled by a single switch. In operation, first raise the top plate to a certain height using the lifting mechanism, install the filter element on the connecting seat, then lower the top plate back to its original position. Turn on the high-pressure water source, then simultaneously open the first solenoid valve via switch one. High-pressure water from the sealed water pipe enters the cleaning pipe through the distribution pipe and is sprayed out from the nozzle, cleaning the filter element from the inside out. After cleaning, close the first solenoid valve, and the operator manually cleans the outside of the filter element using a high-pressure water gun. This process can be repeated 2-3 times.

[0024] Meanwhile, a closed air pipe 10 is also arranged on the support frame 6 via a round tube fixing clamp 25. One end of the closed air pipe 10 is connected to a high-pressure air source through a reserved port. A distribution pipe 11 is set on the closed air pipe 10 at a position corresponding to the cleaning pipe. A second solenoid valve 12 is arranged on the distribution pipe 11. A three-way pipe 13 is connected to the upper end of the cleaning pipe. The two inlets of the three-way pipe 13 are respectively connected to the first solenoid valve 9 and the second solenoid valve 10. The second solenoid valve is uniformly controlled by the same switch. After the inner and outer sides of the filter element are cleaned in sequence, the first solenoid valve remains closed, the high-pressure air source is opened, and the second solenoid valve is opened simultaneously through the switch. The high-pressure gas enters the cleaning pipe through the distribution pipe and is sprayed out from the nozzle. The high-pressure gas cleans the filter element from the inside to the outside, removing dust such as titanium dioxide and carbon black with strong adsorption capacity. The high-pressure water source and high-pressure air source both use existing technology products, so they are not shown in the diagram. Only a reserved port 27 is reserved on one side of the closed water pipe and closed air cylinder to connect with them.

[0025] Considering that operators need to adjust the angle to achieve multi-directional cleaning when manually cleaning the outside of the filter element with a handheld high-pressure water gun, the following measures are taken to address this issue: Bearing seats 17 are spaced apart on the top plate 2, and the hollow seat 3 is rotatably arranged within the bearing seats 17. A driven wheel 18 is fitted onto the upper end of the hollow seat 3. A drive motor 20 is vertically arranged on the rear side of the top plate 2 via a bracket 19. A drive wheel 21 is arranged on the lower output shaft of the drive motor 20, and the drive wheel 21 and the driven wheel 18 are connected by a conveyor belt 22. By starting the motor, the driven wheel rotates, which in turn drives the filter element to rotate continuously in a circumferential direction through the hollow seat. At this time, the operator only needs to move the high-pressure water gun up and down to complete the cleaning of the outside of the filter element.

[0026] In addition, to ensure belt tension, tensioning pulleys 23, which cooperate with the conveyor belt, are rotatably mounted between the bearing seats 17 on the top plate 2 via a fixed shaft. The conveyor belt outputs from the driving pulley and passes over the driven pulleys on both sides, the two tensioning pulleys, and the middle driven pulley.

[0027] Furthermore, a protective cover 24 is provided above the top plate. This protective cover can protect other components on the top plate except for the guide rod.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyester melt filter element cleaning device, characterized in that: Includes a housing (1), the upper front and rear sides of the housing (1) are open, and lifting mechanisms are provided on the left and right outer sides of the housing (1). A top plate is movably provided on the top of the housing through the lifting mechanisms. Hollow seats (3) are provided at intervals on the top plate (2). A connecting seat (31) with internal threads is formed at the lower end of the hollow seat (3) located at the lower end of the top plate. A cleaning pipe (4) coaxial with the hollow seat (3) is arranged inside the hollow seat (3). The upper end of the cleaning pipe (4) extends out of the hollow seat and is fixed by a pipe clamp (26). Its lower end is closed and extends out of the connecting seat (31). 31) The cleaning pipe (4) located below the connecting seat is provided with nozzles (5) evenly distributed; a support frame (6) is provided above the top plate (2), and a closed water pipe (7) is provided on the support frame (6). One end of the closed water pipe (7) is connected to the high-pressure water source through a reserved port. A water distribution pipe (8) is provided on one side of the closed water pipe (7) at the position corresponding to the cleaning pipe (4). A first solenoid valve (9) is arranged on the water distribution pipe (8), and the other end of the first solenoid valve (9) is connected to the cleaning pipe (4).

2. The polyester melt filter element cleaning device according to claim 1, characterized in that: The support frame (6) is also provided with a closed air pipe (10). One end of the closed air pipe (10) is connected to a high-pressure air source through a reserved port. A branch air pipe (11) is provided on the closed air pipe (10) at a position corresponding to the cleaning pipe (4). A second solenoid valve (12) is provided on the branch air pipe (11). A three-way pipe (13) is connected to the upper end of the cleaning pipe (4). The two inlets of the three-way pipe (13) are connected to the first solenoid valve (9) and the second solenoid valve (12) respectively.

3. The polyester melt filter element cleaning device according to claim 1, characterized in that: The lifting mechanism includes a support plate (14) and a cylinder (15). The support plate (14) is located on both sides of the housing. The cylinder (15) is located at the top center of the support plate (14). The telescopic shaft of the cylinder (15) is vertically fixed to the bottom of the top plate (2). Two guide rods (16) are vertically arranged on the support plate (14). The free ends of the two guide rods (16) pass through the top plate.

4. The polyester melt filter element cleaning device according to claim 1, characterized in that: The top plate (2) is provided with bearing seats (17) spaced apart. The hollow seat (3) is rotatably arranged in the bearing seats. The upper end of the hollow seat (3) is fitted with a driven wheel (18). The rear side of the top plate is vertically arranged with a drive motor (20) through a bracket (19). The lower output shaft of the drive motor (20) is provided with a drive wheel (21). The drive wheel (21) and the driven wheel (18) are driven by a conveyor belt (22).

5. A polyester melt filter element cleaning device according to claim 4, characterized in that: A tensioning wheel (23) that cooperates with the conveyor belt is rotatably provided between the bearing seats (17) located on the top plate (2) via a fixed shaft.

6. The polyester melt filter element cleaning device according to claim 1, characterized in that: A protective cover (24) is also provided above the top plate.

Images