PTFE filter bag blank washing apparatus

Abstract

The utility model provides a PTFE filter bag cloth cleaning equipment, including installation support, the inside rotation of installation support is connected with fixed gyro wheel, fixed gyro wheel is driven by the rotation motor of installation support outside, the inside rotation of fixed gyro wheel is connected with longitudinal telescopic link, longitudinal telescopic link all is composed by telescopic base and extension link, and the telescopic base of longitudinal telescopic link is fixed with extension link by fastening bolt, and the extension link of longitudinal telescopic link is fixed with electric telescopic link, and the extension link of electric telescopic link is fixed with clamping plate, and installation support is fixed with water spraying support, and water spraying support middle is fixed with high pressure jet pipeline, and high pressure jet pipeline back is fixed with water pipe, because the utility model is in the circumferential setting of frame multiple groups servo drive's electric telescopic link, can continuously adjust the clamping diameter in a certain range, and cooperate longitudinal telescopic link in certain interval arbitrary positioning, realize filter bag cloth circumference and length's bilateral self -adaptation tension, and high pressure jet sweeps cloth surface, improves cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of filter bag fabric, specifically to PTFE filter bag fabric cleaning equipment. Background Technology

[0002] In the field of high-temperature flue gas dust removal, polytetrafluoroethylene (PTFE) filter bags have become the ultimate filtration material for processes such as coal-fired boilers, waste incineration, titanium dioxide roasting, and primary metal smelting due to their resistance to continuous operation at 240℃, transient operation at 260℃, and inertness across all pH levels. However, the extremely low surface energy and dense microporous structure of PTFE fibers result in the continued adhesion of spinning oils, metal ions, and environmental dust to the fabric after weaving. These residues can thermally decompose into fluorides and sulfur oxides during operation, inducing "pre-corrosion" of the filter media and micro-cracks in the membrane layer, thus shortening its service life. More critically, the abrasion resistance of PTFE fibers only reaches ISO 12947-2 Class M. Any hard particles ≥0.3 μm that become trapped will exacerbate the "abrasive-frame" interface cutting during pulse jet cleaning, causing yarn breakage and exposure of the base fabric.

[0003] According to Chinese Patent No. CN112853719A, a dust removal device for PTFE filter bag fabric is disclosed. It includes: a frame; a first elastic tensioning device mounted on the frame and fixedly connected to it; a dust removal device located beside the elastic tensioning device and fixedly connected to it, the dust removal device having multiple working ends symmetrically arranged vertically; a dust removal and cleaning device located beside the dust removal device and fixedly connected to it; a rapid drying device located beside the dust removal and cleaning device and fixedly connected to it; and a second elastic tensioning device located at the output end of the rapid drying device, the second elastic tensioning device having the same structure as the first elastic tensioning device and fixedly connected to it. This invention can quickly remove dust while ensuring the quality of the PTFE filter bag fabric.

[0004] However, existing filter bag fabric cleaning equipment suffers from various limitations due to different usage scenarios and varying filter bag fabric sizes used by users. The existing equipment generally employs two main technical approaches: "stirring-soaking" or "fixed spray bar-flat conveying." The former relies on paddle mechanical disturbance for mass transfer, resulting in low efficiency in separating the embedded oil and particles from the PTFE microfibers. While the latter can enhance spray shearing, the center distance between the spray bar array and the guide roller is designed for a single width, leading to inconvenience for users during cleaning. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the problem that existing filter bag fabric cleaning equipment has different usage scenarios and different filter bag fabric sizes used by users. The existing filter bag fabric cleaning equipment generally follows two major technical routes: "stirring-soaking" or "fixed spray bar-flat conveying". The former relies on the mechanical disturbance of the paddle to achieve mass transfer, resulting in low peeling efficiency of the oil agent embedded in the PTFE microfiber and the particles; although the latter can enhance spray shearing, the center distance between the spray bar array and the guide roller is designed according to a single width, which is a single size and causes inconvenience for users.

[0006] The technical solution adopted to solve the above technical problems is: A PTFE filter bag fabric cleaning device includes a mounting bracket. A fixed roller is rotatably connected to the inner side of the mounting bracket, driven by a rotating motor on the outer side of the mounting bracket. A longitudinal telescopic rod is rotatably connected to the inner side of the fixed roller. Each longitudinal telescopic rod consists of a telescopic base and an extension rod, which are fixed to each other by fastening bolts. An electric telescopic rod is fixed to the extension rod of the longitudinal telescopic rod, and a clamping plate is fixed to the extension rod of the electric telescopic rod. A water spray bracket is fixed to the mounting bracket, and a high-pressure jet pipe is fixed in the middle of the water spray bracket. A water pipe is fixed to the back of the high-pressure jet pipe. The fixed roller drives the longitudinal telescopic rod to rotate 360°. The clamping plate, pushed by the electric telescopic rod, tightens the PTFE filter bag fabric from the inside, forming an "inner support-rotation" open state. The high-pressure jet pipe maintains an equidistant distance from the fabric surface, achieving uniform rinsing across the entire fabric. This improves cleaning efficiency compared to manual soaking and avoids dead corners caused by folds.

[0007] As a preferred embodiment of this utility model, a control panel is fixed to the side of the mounting bracket, and a water tank is fixed to the lower side of the mounting bracket.

[0008] As a preferred technical solution of this utility model, a water pump is fixed inside the water tank, the water pump of the water tank is connected to a water pipe, a filter plate is fixed on the water tank, the filter plate is detachable, and the water tank has a built-in water pump to form a closed-loop circulation; the filter plate can be removed online to immediately intercept the short fibers and dust washed off, reducing water consumption and sewage discharge.

[0009] As a preferred embodiment of this utility model, the longitudinal telescopic rod is arranged in a circumferential array around the fixed roller, and a transmission gear is fixed on the outside of the fixed roller on the longitudinal telescopic rod.

[0010] As a preferred technical solution of this utility model, the mounting bracket has a drive gear fixed on one side of the transmission gear. The drive gear does not rotate, and the transmission gear meshes with the drive gear. The meshing of the transmission gear and the drive gear causes the telescopic rod to rotate on its own axis while revolving around the sun, forming a "planetary" differential, which does not require additional drive.

[0011] As a preferred technical solution of this utility model, the water spray bracket has hot air blowers fixed on both sides of the high-pressure jet pipe. The hot air blowers have pipes facing downwards and are symmetrically arranged on both sides of the high-pressure jet pipe. After rinsing, the fabric is immediately dried with hot air.

[0012] The beneficial effects of this utility model are as follows: Because this utility model has multiple sets of servo-driven electric telescopic rods arranged in the circumference of the frame, the clamping diameter can be continuously adjusted within a certain range, and in conjunction with the longitudinal telescopic rod, it can be positioned arbitrarily within a certain range, realizing bilateral adaptive tensioning of the filter bag fabric circumference and length, and high-pressure jet sweeping the fabric surface, thereby improving cleaning efficiency. Attached Figure Description

[0013] Figure 1 This is the first axial view of the present invention; Figure 2 This is the second axial view of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 This is the third axial view of the present invention.

[0014] In the diagram: 1. Mounting bracket; 2. Fixed roller; 3. Longitudinal telescopic rod; 4. Electric telescopic rod; 5. Clamping plate; 6. Water spray bracket; 7. High-pressure jet pipe; 8. Water pipe; 9. Control panel; 10. Water tank; 11. Filter plate; 12. Transmission gear; 13. Drive gear; 14. Hot air blower. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0020] Example 1

[0021] exist Figure 1-4 This utility model provides a technical solution: a PTFE filter bag fabric cleaning device, including a mounting bracket 1. A fixed roller 2 is rotatably connected to the inner side of the mounting bracket 1. The fixed roller 2 is driven by a rotating motor on the outer side of the mounting bracket 1. A longitudinal telescopic rod 3 is rotatably connected to the inner side of the fixed roller 2. Each longitudinal telescopic rod 3 consists of a telescopic base and an extension rod. The telescopic base and extension rod of the longitudinal telescopic rod 3 are fixed by fastening bolts. An electric telescopic rod 4 is fixed to the extension rod of the longitudinal telescopic rod 3. A clamping plate 5 is fixed to the extension rod of the electric telescopic rod 4. A water spray bracket 6 is fixed to the mounting bracket 1. A high-pressure jet pipe 7 is fixed in the middle of the water spray bracket 6. A water pipe 8 is fixed to the back of the high-pressure jet pipe 7. The rotating motor drives the fixed roller 2 to rotate, and the circumferentially arrayed longitudinal telescopic rods 3 revolve accordingly. The electric telescopic rod 4 pushes the clamping plate 5 forward to clamp the edge of the PTFE filter bag fabric. The length of the longitudinal telescopic rods 3 is pre-adjusted to fully unfold the inner and outer layers of the bag fabric. During the revolve, the high-pressure jet pipe 7 sprays onto the surface of the fabric, achieving uniform and deep cleaning.

[0022] In one aspect of this embodiment, a control panel 9 is fixed to the side of the mounting bracket 1, and a water tank 10 is fixed to the lower side of the mounting bracket 1. A water pump is fixed inside the water tank 10, and the water pump of the water tank 10 is connected to a water pipe 8. A filter plate 11 is fixed on the water tank 10 and is removable. The control panel 9 can set the water pressure and cleaning time with one button. The water pump sends the cleaning liquid in the water tank 10 into the high-pressure jet pipe 7 through the water pipe 8. The wastewater after use falls back to the filter plate 11, where large particles of impurities are intercepted, and the clean water flows back to the water tank 10 to form a cycle, reducing water consumption and facilitating cleaning.

[0023] In one aspect of this embodiment, the longitudinal telescopic rods 3 are arranged in a circumferential array around the fixed rollers 2. A transmission gear 12 is fixed to the outside of the fixed rollers 2 on the longitudinal telescopic rods 3. A drive gear 13 is fixed to one side of the transmission gear 12 on the mounting bracket 1. The drive gear 13 does not rotate. The transmission gear 12 meshes with the drive gear 13. The water spray bracket 6 is fixed with hot air blowers 14 on both sides of the high-pressure jet pipe 7. The pipes of the hot air blowers 14 face downwards. When the fixed rollers 2 revolve, the transmission gear 12 rolls along the stationary drive gear 13 and is forced to rotate, causing the longitudinal telescopic rods 3 to drive the bag blank to generate additional rotation. The relative jet velocity of the bag blank surface is further increased, improving the cleaning effect. After cleaning, the hot air blowers 14 blow hot air downwards to quickly dry the bag blank, realizing the integration of cleaning and drying.

[0024] The working principle of this utility model is as follows: A rotating motor drives the fixed roller 2 to rotate, and the longitudinal telescopic rods 3 in a circular array revolve accordingly; the electric telescopic rod 4 pushes the clamping plate 5 forward to clamp the edge of the PTFE filter bag blank, and the pre-adjusted length of the longitudinal telescopic rod 3 allows the inner and outer layers of the bag blank to be fully unfolded. During the revolution, the transmission gear 12 rolls along the stationary drive gear 13, forcing the longitudinal telescopic rod 3 to drive the bag blank to rotate additionally, so that the high-pressure jet pipe 7 can achieve high-speed circumferential spraying on the rotating and revolving bag blank surface, completing uniform and deep cleaning. The cleaning solution is sent from the water tank 10 to the jet pipe through the water pump and water pipe 8. After the wastewater returns, it passes through the detachable filter plate 11 to intercept impurities and flows back to the water tank to form a cycle. After cleaning, the hot air blower 14 blows hot air downwards to quickly dry the bag blank, realizing the integrated "wash-dry" operation.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A PTFE filter bag fabric cleaning device, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is rotatably connected to a fixed roller (2), which is driven by a rotating motor on the outside of the mounting bracket (1). The fixed roller (2) is rotatably connected to a longitudinal telescopic rod (3), which is composed of a telescopic base and an extension rod. The telescopic base and the extension rod of the longitudinal telescopic rod (3) are fixed by fastening bolts. An electric telescopic rod (4) is fixed on the extension rod of the longitudinal telescopic rod (3). A clamping plate (5) is fixed on the extension rod of the electric telescopic rod (4). A water spray bracket (6) is fixed on the mounting bracket (1). A high-pressure jet pipe (7) is fixed in the middle of the water spray bracket (6). A water pipe (8) is fixed on the back of the high-pressure jet pipe (7).

2. The PTFE filter bag fabric cleaning equipment according to claim 1, characterized in that: A control panel (9) is fixed to the side of the mounting bracket (1), and a water tank (10) is fixed to the lower side of the mounting bracket (1).

3. The PTFE filter bag fabric cleaning equipment according to claim 2, characterized in that: A water pump is fixed inside the water tank (10), and the water pump of the water tank (10) is connected to the water pipe (8). A filter plate (11) is fixed on the water tank (10), and the filter plate (11) is detachable.

4. The PTFE filter bag fabric cleaning equipment according to claim 1, characterized in that: The longitudinal telescopic rod (3) is arranged in a circumferential array around the fixed roller (2), and a transmission gear (12) is fixed on the outside of the fixed roller (2) of the longitudinal telescopic rod (3).

5. The PTFE filter bag fabric cleaning equipment according to claim 4, characterized in that: The mounting bracket (1) has a drive gear (13) fixed on one side of the transmission gear (12). The drive gear (13) does not rotate, and the transmission gear (12) meshes with the drive gear (13).

6. The PTFE filter bag fabric cleaning equipment according to claim 5, characterized in that: The water spray bracket (6) has hot air blowers (14) fixed on both sides of the high-pressure jet pipe (7), with the pipes of the hot air blowers (14) facing downwards.

Images