Bag pulling centrifugal machine for fluorescent whitening agent production

Abstract

The utility model discloses a pull bag centrifuge for fluorescent whitening agent production, which comprises an outer cylinder, a filter cylinder, a rotating plate, a filter bag and a blowback pipe, the filter cylinder is rotatably arranged in the outer cylinder, a plurality of spacing grooves are arranged on the cylinder wall of the filter cylinder along the circumferential direction, the rotating plate is rotatably arranged in the spacing grooves, the filter bag is arranged in the filter cylinder, and the blowback pipe is arranged in the filter cylinder. The blowback pipe is arranged on the outer side of the filter cartridge, at least one spray head is arranged on the blowback pipe, and the spray head faces one side of the filter cartridge; according to the utility model, after materials are centrifugally filtered, liquid is thrown to the outer side of the filter cartridge through the filter bag and the filter cartridge, solid impurities are blocked by the filter bag and adhered to the filter bag, the blowback pipe blows air to one side of the filter cartridge, and airflow drives the rotating plate to rotate, so that the filter bag is knocked, and a filter cake adhered to the filter bag is removed; therefore, the centrifugal effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a bag-pulling centrifuge for producing fluorescent whitening agents. Background Art

[0002] The bag centrifuge is an industrial equipment, which consists of a base unit, a housing unit, a power transmission unit and a filtering unit. In the production process of fluorescent whitening agent, the bag centrifuge is needed for filtering and purification. When the bag centrifuge is working, after the material enters the centrifuge, the filter cylinder will rotate at high speed, and the liquid in the material will be thrown out of the filter cylinder by centrifugal motion, while the solid matter in the material will be blocked by the filter bag in the filter cylinder and remain on the filter bag. After working for a long time, a thick layer of filter cake will form on the surface of the filter bag. In order not to reduce the centrifugal effect, the scraper will scrape off the filter cake on the filter bag, but the scraper cannot completely scrape off the filter cake. Therefore, some centrifuges will set a backflush pipe outside the filter cylinder to backflush the filter bag. However, during the backflush process, the airflow blows in from the holes on the filter cylinder to backflush the filter bag, and most of the airflow will be blocked by the wall of the filter cylinder and cannot enter the filter cylinder. Therefore, the backflush effect is poor, causing part of the filter cake to remain on the filter bag, affecting the centrifugal effect. Utility Model Content

[0003] The utility model aims to provide a bag centrifuge for producing fluorescent whitening agent in view of the above-mentioned deficiencies in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A bag centrifuge for producing fluorescent whitening agents, comprising an outer cylinder;

[0006] The filter cylinder is rotatably arranged in the outer cylinder, and the cylinder wall of the filter cylinder is provided with a plurality of spacing grooves along the circumferential direction;

[0007] A rotating plate is rotatably disposed in the spacing groove;

[0008] A filter bag is arranged in the filter cartridge;

[0009] The back-blowing pipe is located outside the filter cartridge. At least one nozzle is arranged on the back-blowing pipe, and the nozzle faces one side of the filter cartridge.

[0010] Preferably, an annular rod is fixedly provided on the top end of the filter cartridge, and the top end of the rotating plate is hinged to the annular rod.

[0011] Preferably, a limiting ring is fixedly provided at the lower portion of the filter cartridge, and the lower portion of the rotating plate abuts against the limiting ring.

[0012] Preferably, a return spring is provided between the rotating plate and the limiting ring.

[0013] Preferably, the top end cover of the outer cylinder is provided with a cover plate, the cover plate is provided with a scraper, and the scraper extends into the filter cylinder.

[0014] Preferably, a telescopic cylinder is fixedly arranged on the cover plate, a piston rod of the telescopic cylinder passes through the cover plate and extends into the filter cartridge, and the scraper is fixedly arranged on the piston rod of the telescopic cylinder.

[0015] Preferably, a liquid outlet pipe is provided at the lower part of the outer cylinder, and a discharge bin is also provided at the bottom of the outer cylinder, and the discharge bin is communicated with the filter cylinder.

[0016] The beneficial effects of adopting the above technical solution are:

[0017] 1. In the utility model, after the centrifuge has been working for a long time, when cleaning the filter cake on the filter bag, the back-blowing pipe blows air to one side of the filter cartridge, and the filter cartridge rotates at the same time during the blowing process. When the back-blowing pipe blows air to the cylinder wall of the filter cartridge, the airflow enters from the holes of the filter cartridge and blows toward the filter bag, causing the filter cake on the filter bag to fall off; while the filter cartridge continues to rotate, when the back-blowing pipe blows the airflow toward the rotating plate, the rotating plate rotates, and can knock the filter bag, knocking the filter cake on the filter bag off, thereby cleaning the filter cake more thoroughly;

[0018] 2. In the utility model, when the scraper is scraping the filter cake, the telescopic cylinder enables the scraper to move up and down through telescopic activity, so that the filter cake at various positions on the filter bag can be scraped, thereby improving the scraping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model;

[0021] Figure 3 It is a three-dimensional schematic diagram of the filter cartridge of the utility model;

[0022] Figure 4 It is a three-dimensional schematic diagram of another state of the filter cartridge of the utility model.

[0023] In the figure: 1 is an outer cylinder, 2 is a filter cylinder, 3 is a rotating plate, 4 is a back-blowing pipe, 5 is a nozzle, 6 is an annular rod, 7 is a limit ring, 8 is a cover plate, 9 is a scraper, 10 is a telescopic cylinder, 11 is a liquid outlet pipe, and 12 is a discharge bin. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 4As shown, a bag-pulling centrifuge for producing fluorescent whitening agents comprises an outer cylinder 1, a filter cylinder 2, a rotating plate 3, a filter bag and a back-blowing pipe 4, wherein the bottom of the outer cylinder 1 is fixedly provided with a support foot, and the outer cylinder 1 is fixedly provided on the ground by the support foot, a plurality of holes for liquid to pass through are provided on the cylinder wall of the filter cylinder 2, and the upper and lower ends of the filter cylinder 2 are both open ends, the filter cylinder 2 is rotatably arranged in the outer cylinder 1, and the cylinder wall of the filter cylinder 2 is provided with a plurality of spacing grooves along the circumferential direction, the rotating plate 3 is rotatably arranged in the spacing groove, and a rotating plate 3 is arranged in each spacing groove, the filter bag is arranged in the filter cylinder 2, and the filter bag is made of PEEK material, one end of the back-blowing pipe 4 extends into the outer cylinder 1, and the back-blowing pipe 4 is located on the outside of the filter cylinder 2, and at least one nozzle 5 is provided on the back-blowing pipe 4, and the output end of the nozzle 5 faces one side of the filter cylinder 2, and the back-blowing pipe 4 is connected to a fan at one end located outside the outer cylinder 1. When the centrifuge is working, the material enters the filter cylinder 2, and the filter cylinder 2 rotates at a high speed to throw the liquid in the material out of the filter cylinder 2 through the centrifugal action, while the solid matter in the material will be blocked by the filter bag and adhere to the surface of the filter bag. After working for a long time, a thick filter cake will be formed, which affects the centrifugal effect. Therefore, in order to remove the filter cake from the filter bag, the fan blows air into the interior of the outer cylinder 1 through the backblowing pipe 4, and the airflow is ejected from the nozzle 5 and sprayed to one side of the filter cylinder 2. A part of the airflow enters the filter cylinder 2 through the holes in the side wall of the filter cylinder 2 to backblow the filter bag and blow the filter cake off the filter bag. In order to remove it more thoroughly, the filter cylinder 2 rotates continuously during the backblowing process. When the rotating plate 3 rotates to the nozzle 5, the airflow ejected from the nozzle 5 causes the rotating plate 3 to rotate toward the inside of the filter cylinder 2 in the spacing groove, so that the rotating plate 3 knocks the filter bag, causing the filter cake to fall from the filter bag, so that the filter bag can be cleaned more thoroughly and the centrifugal effect is improved.

[0028] Furthermore, if Figure 3 and Figure 4 As shown, a circular rod 6 is fixedly provided at the top of the filter cylinder 2, and the top of the rotating plate 3 is hinged to the circular rod 6. During the rotation of the rotating plate 3, the rotating plate 3 rotates toward the inside of the filter cylinder 2 with the hinge point as the center, thereby knocking the filter bag.

[0029] Furthermore, a limit ring 7 is fixedly provided at the lower portion of the filter cartridge 2, and the lower portion of the rotating plate 3 abuts against the limit ring 7. During the centrifugation process, due to the high-speed rotation of the filter cartridge 2, in order to prevent the rotating plate 3 from rotating toward the outside of the filter cartridge 2, a limit ring 7 is fixedly provided at the lower portion of the filter cartridge 2 by welding. The limit ring 7 can limit the rotating plate 3 to prevent the rotating plate 3 from falling out and causing damage to the equipment.

[0030] Furthermore, a reset spring is provided between the rotating plate 3 and the limiting ring 7. After the back-blowing tube 4 blows the rotating plate 3 and hits the filter bag, the reset spring can pull the rotating plate 3 to reset, so that the rotating plate 3 fits with the limiting ring 7, ensuring that the filter cartridge 2 is a cylindrical structure.

[0031] Furthermore, the top end cover of the outer cylinder 1 is provided with a cover plate 8, and the cover plate 8 is provided with a scraper 9, and the scraper 9 extends into the filter cylinder 2. During the cleaning process of the filter cake, the scraper 9 can scrape the filter cake to prevent the filter cake from adhering to the filter bag.

[0032] Furthermore, a telescopic cylinder 10 is fixedly provided on the cover plate 8, and the piston rod of the telescopic cylinder 10 extends through the cover plate 8 into the filter cartridge 2. The scraper 9 is fixedly provided on the piston rod of the telescopic cylinder 10. When the telescopic rod of the telescopic cylinder 10 is extended or retracted, the scraper 9 can be driven to move up and down, so that the filter cake on the surface of the filter bag can be scraped off in all directions.

[0033] Furthermore, a liquid outlet pipe 11 is provided at the lower part of the outer cylinder 1 for discharging the liquid after centrifugation, and a discharge bin 12 is also provided at the bottom of the outer cylinder 1. The discharge bin 12 is connected to the filter cylinder 2 and is used to discharge the filter cake after backblowing and scraping.

[0034] Furthermore, a transmission assembly is provided between the filter cylinder 2 and the outer cylinder 1, and the transmission assembly includes a support cover, the upper end of the support cover is fixedly connected to the limit ring 7, the support cover is rotatably arranged in the discharge bin, the lower end of the support cover is evenly and fixedly provided with support rods along the circumferential direction, the support rods are horizontally arranged, a transmission pipe is fixedly connected to the support rods, the transmission pipe is coaxially arranged with the filter cylinder 2, a motor is fixedly provided on the outer cylinder 1, a belt is transmission-connected between the motor and the transmission pipe, the motor drives the belt to rotate the transmission pipe, and the transmission pipe can drive the support cover, the limit ring and the filter cylinder 2 to rotate, thereby realizing centrifugal operation.

[0035] Furthermore, a connecting rod is fixedly provided in the discharge bin along the circumferential direction, a mounting seat is fixedly provided on the connecting rod, a lifting cylinder is provided on the mounting seat, a sleeve is sleeved on the piston rod of the lifting cylinder, the sleeve is coaxially arranged with a transmission tube, a bearing is provided between the sleeve and the transmission tube, the piston rod of the lifting cylinder is connected with a bag pulling cover, a rotating joint is connected between the bag pulling cover and the piston rod of the lifting cylinder, the bag pulling cover is sleeved on the transmission tube, the transmission tube can drive the bag pulling cover to rotate, and at the same time, the lifting cylinder can also drive the bag pulling cover to slide up and down when it is extended and retracted up and down, a pull ring is fixedly connected to the outer wall of the bag pulling cover through a pull rod, the pull ring is coaxially arranged with the transmission tube, the pull ring is connected to the bottom of the bag pulling bag, and the bag pulling cover can drive the bag pulling bag to stretch during the up and down movement, thereby breaking the filter cake. This belongs to the conventional technology of the bag pulling centrifuge and will not be elaborated here.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bag centrifuge for producing fluorescent whitening agent, characterized in that: Includes outer barrel (1); A filter cylinder (2) is rotatably disposed in the outer cylinder (1), and a cylinder wall of the filter cylinder (2) is provided with a plurality of spacing grooves along a circumferential direction; A rotating plate (3) is rotatably disposed in the spacing groove; A filter bag is arranged in the filter cartridge (2); The back-blowing pipe (4) is located outside the filter cartridge (2). At least one nozzle (5) is provided on the back-blowing pipe (4), and the nozzle (5) faces one side of the filter cartridge (2).

2. A bag centrifuge for producing fluorescent whitening agent according to claim 1, characterized in that: An annular rod (6) is fixedly provided at the top end of the filter cylinder (2), and the top end of the rotating plate (3) is hinged to the annular rod (6).

3. A bag centrifuge for producing fluorescent whitening agent according to claim 2, characterized in that: A limiting ring (7) is fixedly arranged at the lower part of the filter cylinder (2), and the lower part of the rotating plate (3) abuts against the limiting ring (7).

4. A bag centrifuge for producing fluorescent whitening agent according to claim 3, characterized in that: A return spring is provided between the rotating plate (3) and the limiting ring (7).

5. A bag centrifuge for producing fluorescent whitening agent according to claim 1, characterized in that: The top end of the outer cylinder (1) is covered with a cover plate (8), and a scraper (9) is provided on the cover plate (8), and the scraper (9) extends into the filter cylinder (2).

6. A bag centrifuge for producing fluorescent whitening agent according to claim 5, characterized in that: A telescopic cylinder (10) is fixedly arranged on the cover plate (8); a piston rod of the telescopic cylinder (10) passes through the cover plate (8) and extends into the filter cartridge (2); and the scraper (9) is fixedly arranged on the piston rod of the telescopic cylinder (10).

7. A bag centrifuge for producing fluorescent whitening agent according to claim 1, characterized in that: A liquid outlet pipe (11) is provided at the lower part of the outer cylinder (1), and a material outlet bin (12) is also provided at the bottom of the outer cylinder (1), and the material outlet bin (12) is connected to the filter cylinder (2).

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