On-line cleaning and sterilizing type disc centrifuge

Abstract

The utility model discloses an on-line cleaning and sterilizing type disc centrifuge, an on-line cleaning assembly and a mechanical sealing assembly are arranged in the centrifuge, and a plurality of spraying openings respectively face the surface of each part of the centrifuge to carry out spraying and cleaning; the cleaning liquid conveying pipeline conveys the cleaning liquid to a designated position; the diaphragm valve is installed on the cleaning liquid conveying pipeline and controls the spraying openings or the spraying balls to spray the cleaning liquid, and it is ensured that the cleaning liquid can be sprayed to all the surfaces of the disc type centrifugal machine by setting the directions of the spraying heads and the spraying balls; in addition, the mechanical sealing assembly comprises a mechanical sealing base, a movable ring and a static ring, the rotating shaft of the centrifugal machine is sleeved with the movable ring and the static ring, and the sealing performance of the centrifugal machine is improved through the mechanical sealing assembly. According to the centrifugal machine cleaning device, thoroughness, comprehensiveness and reliability in the centrifugal machine cleaning process can be ensured; the sealing performance in the sterilization process can be further guaranteed, sanitation and safety of materials in the centrifugal machine are guaranteed, the use requirement is met, and the applicability is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to an online cleaning and sterilizing disc centrifuge. Background Art

[0002] Disc centrifuges have the advantages of good separation effect, large processing capacity, and continuous operation. They can be used in separation processes such as purification, clarification, and concentration, and are widely used in industries such as petroleum, chemical, food, pharmaceutical, environmental protection, and shipping. The centrifugal force generated by the high-speed rotation of the centrifuge can quickly and effectively separate solid and liquid mixtures. In special industry applications, such as pharmaceuticals and food, disc centrifuges are required to have online cleaning and steam sterilization functions. In pharmaceuticals, disc centrifuges can be used to extract the active ingredients of drugs to achieve purification and separation. In food, disc centrifuges can separate cream and milk.

[0003] However, these applications have high requirements for equipment cleaning and sterilization. Improper equipment cleaning will cause material contamination, resulting in the material being contaminated with bacteria and being scrapped, causing losses. Incomplete equipment sterilization will cause the material to be contaminated with bacteria, resulting in the material being scrapped.

[0004] Therefore, there is an urgent need to propose an online cleaning and sterilization disc centrifuge to achieve comprehensive and thorough online cleaning of the centrifuge and reliable online sterilization. Utility Model Content

[0005] The utility model aims to provide an online cleaning and sterilizing disc centrifuge to solve the problem of how to perform comprehensive and thorough online cleaning and online sterilization of the centrifuge.

[0006] In order to solve the above problems, the utility model provides an online cleaning and sterilizing disc centrifuge, including an online cleaning component and a mechanical sealing component;

[0007] The online cleaning assembly comprises: a plurality of spray ports and spray balls arranged inside the centrifuge, a cleaning liquid delivery pipeline connected to the spray ports and the spray balls, and a diaphragm valve;

[0008] The multiple spray ports are respectively directed toward various components of the centrifuge, and spray and clean the various components; the cleaning liquid delivery pipeline delivers the cleaning liquid to a designated location; the diaphragm valve is installed on the cleaning liquid delivery pipeline, and controls the spray ports or spray balls to spray the cleaning liquid;

[0009] The mechanical seal assembly includes a mechanical seal base and a moving ring and a stationary ring sleeved on the rotating shaft of the centrifuge; the moving ring is connected to the rotating shaft of the centrifuge through a set screw and rotates with the rotating shaft; the stationary ring is fixed to the mechanical seal base through bolts.

[0010] Optionally, the multiple spray ports include a first spray port fixed on the upper cover flange of the centrifuge, with a spray direction toward the inner side of the centrifugal chamber, the outer wall of the centrifugal pump and / or the inner side of the flange of the centrifuge.

[0011] Optionally, the multiple spray ports further include a second spray port fixed on the upper cover flange of the centrifuge, with a spray direction toward the outer side of the centrifuge, the upper cover and / or the outer side of the flange.

[0012] Optionally, the multiple spray ports further include a third spray port, which is fixed on the upper casing flange of the centrifuge, and the spraying direction is toward the outer surface of the drum cover, the upper casing and / or the outer side of the flange of the centrifuge.

[0013] Optionally, the multiple spray ports further include a fourth spray port, which is fixed on the outside of the upper cover shell of the centrifuge, and the spray direction is toward the outer surface of the drum, the upper cover shell and / or the large locking ring of the centrifuge.

[0014] Optionally, the multiple spray ports further include a fifth spray port, which is fixed at an operating water outlet of a lower casing of the centrifuge, and a spray direction is toward the bottom of the drum and / or the lower casing of the centrifuge.

[0015] Optionally, the spray ball is arranged above the material tank of the centrifuge, and the spraying direction is toward the material tank, sight glass and / or sight window of the centrifuge.

[0016] Optionally, a sealing gasket is further included, and the sealing gasket is used to seal the contact surface between the lower cover shell of the centrifuge and the mechanical seal base.

[0017] Optionally, an O-ring is further included, and the O-ring is installed on the periphery of the dynamic ring and / or the static ring.

[0018] Compared with the prior art, the online cleaning and sterilizing disc centrifuge provided by the utility model is provided with a plurality of spray ports and spray balls, and the spray ports or spray balls are controlled by a diaphragm valve installed on the cleaning liquid delivery pipeline to spray cleaning liquid, so as to clean each component in the centrifuge respectively; by setting the directions of each spray head and spray ball, it is ensured that the cleaning liquid can be sprayed onto all surfaces of each component of the disc centrifuge, the structure is simple, and the cleaning is thorough.

[0019] Furthermore, the mechanical seal assembly of the utility model comprises a mechanical seal base and a dynamic ring and a static ring sleeved on the rotating shaft of the centrifuge. The sealing effect of the centrifuge is enhanced by the mechanical seal assembly, thereby improving the reliability of online sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an online cleaning and sterilizing disc centrifuge in an embodiment of the utility model.

[0021] In the figure, 1, centrifuge base; 2, lower cover; 3, fifth spray port; 4, material tank; 5, upper cover; 6, first spray port; 7, second spray port; 8, third spray port; 9, drum; 10, fourth spray port; 11, motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model 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 a limitation to the present utility model.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0026] The utility model provides an online cleaning and sterilizing disc centrifuge, comprising an online cleaning component and a mechanical sealing component; the online cleaning component comprises: a plurality of spray ports and a spray ball arranged inside the centrifuge, a cleaning liquid delivery pipeline connected to the spray ports and the spray ball, and a diaphragm valve; the plurality of spray ports are respectively directed toward various components of the centrifuge, and each component is sprayed and cleaned; the cleaning liquid delivery pipeline delivers the cleaning liquid to a specified position; the diaphragm valve is installed on the cleaning liquid delivery pipeline to control the spray ports or the spray ball to spray the cleaning liquid.

[0027] The mechanical seal assembly includes a mechanical seal base and a moving ring and a stationary ring sleeved on the rotating shaft of the centrifuge; the moving ring is connected to the rotating shaft of the centrifuge through a set screw and rotates with the rotating shaft; the stationary ring is fixed to the mechanical seal base through bolts.

[0028] In this embodiment, a plurality of spray ports and spray balls are arranged in the centrifuge, and the spray ports or spray balls are controlled by a diaphragm valve installed on the cleaning liquid delivery pipeline to spray the cleaning liquid, so that each component in the centrifuge is cleaned online respectively. By setting the directions of each spray head and spray ball, it is ensured that the cleaning liquid can be sprayed onto all surfaces of each component of the disc centrifuge, thereby achieving comprehensive spraying and online cleaning. In addition, in this embodiment, a mechanical sealing component is used to increase the sealing effect of the centrifuge and ensure the reliability of online sterilization.

[0029] The centrifuge provided in this embodiment includes a centrifuge base 1, a motor 11, a drum 9, a material tank 4, an upper cover 5 and a lower cover 2; wherein the drum 9 includes a drum bottom, a drum cover, a disc rack, a disc, a piston, a main locking ring, an upper locking ring and a centripetal pump cover. The material tank 4 includes a spray ball, a window, a sight light, and upper and lower liquid level switch installation ports. The upper cover 5 includes a spray port and a material inlet and outlet device. The lower cover 2 includes a spray port and a water distribution plate device. The rotating shaft includes a mechanical sealing device and an operating water device.

[0030] Furthermore, the plurality of spray ports include a first spray port 6, which is fixed on the flange of the upper cover shell 5 of the centrifuge, and the spraying direction is toward the inner side of the centrifugal chamber, the outer wall of the centrifugal pump and / or the inner side of the flange of the centrifuge.

[0031] Furthermore, the plurality of spray ports also include a second spray port 7, which is fixed on the upper housing flange of the centrifuge, and the spraying direction is toward the outer side of the centrifuge, the upper housing 5 and / or the outer side of the flange.

[0032] Furthermore, the plurality of spray ports also include a third spray port 8, which is fixed on the upper casing flange of the centrifuge, and the spraying direction is toward the outer surface of the drum cover, the upper casing 5 and / or the outer side of the flange of the centrifuge.

[0033] Furthermore, the plurality of spray ports also include a fourth spray port 10, which is fixed on the outside of the upper cover 5 of the centrifuge, and the spraying direction is toward the outer surface of the drum 9 of the centrifuge, the upper cover 5 and / or the large locking ring.

[0034] Furthermore, the plurality of spray ports also include a fifth spray port 3, which is fixed at the operating water outlet of the lower cover 2 of the centrifuge, and the spraying direction is toward the bottom of the drum 9 and / or the lower cover 2 of the centrifuge.

[0035] Further, the spray ball is arranged above the material tank 4 of the centrifuge, and the spraying direction is toward the material tank 4, the sight glass and / or the sight window of the centrifuge.

[0036] Furthermore, the mechanical seal assembly also includes a sealing gasket, which is used to seal the contact surface between the lower cover of the centrifuge and the mechanical seal base.

[0037] Furthermore, the mechanical seal assembly also includes an O-ring, and the O-ring is installed on the periphery of the dynamic ring and / or the static ring.

[0038] In this embodiment, a sealing gasket and an O-ring are used for auxiliary sealing to provide an additional sealing effect and prevent liquid or gas from leaking through the installation connection part of the mechanical seal.

[0039] Furthermore, in another specific example, the mechanical seal assembly also includes a cooling unit, and the cooling water inlet is located near the stationary ring or on the mechanical seal base so that the cooling water can directly contact the sealing surfaces of the dynamic ring and the stationary ring. The cooling water flows between the dynamic ring and the stationary ring, and helps control the temperature of the sealing surface and reduce wear through direct contact or through the cooling channel inside the ring body. The mechanical seal cooling water enters through the cooling water inlet, cools and lubricates the mechanical seal, and is then discharged through the cooling water outlet.

[0040] In addition to cooling, cooling water can also provide lubrication, reduce friction between the dynamic ring and the static ring, and extend the service life of the mechanical seal assembly.

[0041] Furthermore, in another specific example, a very narrow gap can be set between the dynamic ring and the static ring, and the gap allows the sealing medium (such as liquid or gas) to pass through to form a fluid dynamic film to achieve contact or non-contact sealing.

[0042] Furthermore, in another specific example, the mechanical seal assembly may also include a spring assembly for applying pressure to the dynamic ring to ensure that appropriate contact pressure is maintained between the dynamic ring and the static ring to achieve effective sealing.

[0043] The mechanical seal assembly provided by the utility model provides a sealed environment when the centrifuge is steam sterilized, thereby improving the sterilization effect. Pure steam enters through the steam pipeline, and the disc centrifuge including the feed pipeline, disc rack, disc bundle, piston, drum 9 components, centrifugal chamber assembly, discharge pipeline, material tank 4, etc. are sterilized online. During the sterilization process, the interior of the disc centrifuge is a separate space and will not be in contact with the external environment, thereby avoiding the adverse effects of the external environment on the interior of the equipment, ensuring the thoroughness and sealing of the equipment sterilization, and avoiding the loss caused by the contamination of materials due to incomplete sterilization and unsatisfactory sealing.

[0044] In addition, the mechanical seal assembly can ensure the sealing performance of the centrifuge shaft when rotating at high speed or when processing corrosive, high-temperature, flammable, explosive or toxic materials, prevent the material from leaking into the environment, and also prevent external pollutants from entering the centrifuge, ensuring the safety and cleanliness of the process.

[0045] Furthermore, this embodiment also provides a centrifuge online cleaning method for cleaning the above-mentioned online cleaning and sterilization disc centrifuge, comprising the following steps:

[0046] The cleaning liquid entering the centrifuge reaches the online cleaning component under the action of centrifugal force;

[0047] Control the cleaning liquid reaching the first spray port 6 to spray out, and clean the inner side of the centripetal chamber, the outer wall of the centripetal pump and the inner side of the flange;

[0048] Control the cleaning liquid reaching the second spray port 7 to spray out, and clean the outer side of the ventricle, the upper cover shell 5 and the outer side of the flange;

[0049] Control the cleaning liquid reaching the third spray port 8 to spray out, and clean the outer surface of the drum cover, the upper cover shell 5 and the outer side of the flange;

[0050] Control the cleaning liquid reaching the fourth spray port 10 to spray out, and clean the outer surface of the drum 9, the upper cover shell and the large locking ring;

[0051] Control the cleaning liquid reaching the fifth spray port 3 to spray out, and clean the bottom of the drum 9 and the lower cover 2;

[0052] The cleaning liquid reaching the spray ball is controlled to spray out to clean the material tank 4, the sight glass and the sight window.

[0053] Furthermore, the cleaning liquid entering the centrifuge further comprises the following steps before reaching the online cleaning component under the action of centrifugal force:

[0054] The cleaning liquid reaches the inside of the centrifuge through the feed pipe of the centrifuge, and cleans the feed pipe and the centrifuge chamber;

[0055] Under the action of centrifugal force, the cleaning liquid is evenly distributed inside the drum 9 to clean the internal parts of the drum 9;

[0056] The cleaning liquid flows to the centripetal chamber and flows upward to the clear liquid pipeline under pressure through the centripetal pump to clean the centripetal chamber and the supernatant pipeline.

[0057] Furthermore, the method further comprises the step of draining water through a reserved opening of the centrifuge after cleaning is completed.

[0058] In this embodiment, when the above-mentioned online cleaning and sterilizing disc centrifuge is cleaned, its cleaning process specifically includes the following process:

[0059] The first step is to transport the cleaning liquid to the disc centrifuge through the fermentation tank or pipeline to clean the feed pipeline part of the disc centrifuge;

[0060] In the second step, the cleaning liquid reaches the inside of the equipment through the feed pipe, enters the space between the feed pipe and the disc rack and fills the space with the cleaning liquid to clean the chamber, and is evenly distributed to the inside of the drum 9 through the flow channel of the disc rack under the action of centrifugal force;

[0061] Step 3: The cleaning liquid enters the drum 9 and fills the gaps between the piston, the inner wall of the drum cover, the disc and the disc rack. After the inside is filled with the cleaning liquid, the internal components are cleaned, and the cleaning liquid flows toward the centripetal chamber.

[0062] Step 4: The cleaning liquid enters the centripetal chamber along the gap to clean the inside of the centripetal chamber, and the cleaning liquid flows to the centripetal pump to clean it;

[0063] Step 5: The cleaning liquid flows upward to the clear liquid pipeline under pressure through the centripetal pump, and the pressure is adjusted to fill the pipe with cleaning liquid and clean the upper clear liquid pipeline;

[0064] Step 6: The cleaning liquid is separated inside the drum 9. After a certain period of time or the accumulated flow of the supernatant, the piston is opened by the action of the opening water and the sealing water, and the cleaning liquid is thrown out under the action of the centrifugal force, and the part of the cover shell, the U-shaped groove and the part of the material tank 4 are washed;

[0065] Step 7: The first spray port is located above the centripetal chamber and close to the inner side. It is fixed on the upper housing flange. The cleaning liquid reaches the first spray port 6 through the corresponding pipeline. The cleaning liquid is sprayed out through the diaphragm valve switch to clean the inner side of the centripetal chamber, the outer wall of the centripetal pump and the inner side of the flange.

[0066] Step 8: The second spray port is located above the ventricle and close to the outside, and is also fixed on the upper cover flange. The cleaning liquid reaches the second spray port 7 through the corresponding pipeline, and the cleaning liquid is sprayed out through the diaphragm valve switch to clean the outside of the ventricle, the upper cover 5 and the outside of the flange;

[0067] Step 9: The third spray port is located above the ventricle and close to the outside, and is also fixed on the upper housing flange. The cleaning liquid reaches the third spray port 8 through the corresponding pipeline, and the cleaning liquid is sprayed out through the diaphragm valve switch to clean the outer surface of the drum cover, the upper housing 5 and the outer side of the flange;

[0068] Step 10: The fourth spray port is located outside the upper cover shell 5, diagonally opposite to the drum 9. The cleaning liquid reaches the fourth spray port 10 through the corresponding pipeline, and the cleaning liquid is sprayed out through the diaphragm valve switch to clean the outer surface of the drum 9, the upper cover shell 5 and the large locking ring;

[0069] Step 11: The fifth spray port 3 is a fan-shaped nozzle, located at the operating water outlet of the lower housing 2, obliquely upward and facing the bottom of the drum 9. The cleaning liquid reaches the fifth spray port 3 through the corresponding pipeline, and the cleaning liquid is sprayed out through the diaphragm valve switch to clean the bottom of the drum 9 and the lower housing 2;

[0070] Step 12: The spray ball of the material tank 4 is located above the material tank 4, and the cleaning liquid reaches the spray ball of the material tank 4 through the corresponding pipeline. The cleaning liquid is sprayed out through the diaphragm valve switch to clean the material tank 4, the sight glass and the viewing window.

[0071] Then drain the water through the reserved port of the centrifuge.

[0072] In addition, when the above-mentioned online cleaning and sterilization disc centrifuge is subjected to online steam sterilization, it is necessary to ensure that the internal sealing of the centrifuge equipment is ensured to avoid external contamination of the internal equipment, steam sterilize the internal parts and pipelines of the equipment, and the equipment does not rotate and is in a static state during sterilization. The interior of the equipment is independent of the external environment through sealing rings and mechanical seals; the online cleaning and sterilization disc centrifuge provided by the utility model adopts a matching sealing form of mechanical seal and rotating shaft, fixes the moving ring on the rotating shaft by means of set screws, makes the mechanical seal and the rotating shaft matched and connected, fixes the mechanical seal on the machine seal seat by bolts, and performs auxiliary sealing by means of sealing gaskets and O-rings, so as to ensure that the interior of the centrifuge equipment is strictly sealed.

[0073] In summary, the online cleaning and sterilization disc centrifuge provided by the utility model realizes online cleaning of various parts including the inside of the drum, the outer surface of the drum, the upper cover shell, the lower cover shell and the material tank, ensuring the thoroughness, comprehensiveness and reliability of the equipment during the cleaning process; in addition, the online cleaning and sterilization disc centrifuge provided by the utility model adopts a sealing method combining a mechanical seal and a rotating shaft, which can ensure the sealing and integrity of the sterilization, ensure the hygiene and safety of the material, meet the use requirements, and has a wide range of applicability.

[0074] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An online cleaning and sterilizing disc centrifuge, characterized in that: Including online cleaning components and mechanical seal components; The online cleaning assembly comprises: a plurality of spray ports and spray balls arranged inside the centrifuge, a cleaning liquid delivery pipeline connected to the spray ports and the spray balls, and a diaphragm valve; The multiple spray ports are respectively directed toward various components of the centrifuge, and spray and clean the various components; the cleaning liquid delivery pipeline delivers the cleaning liquid to a designated location; the diaphragm valve is installed on the cleaning liquid delivery pipeline, and controls the spray ports or spray balls to spray the cleaning liquid; The mechanical seal assembly includes a mechanical seal base and a moving ring and a stationary ring sleeved on the rotating shaft of the centrifuge; the moving ring is connected to the rotating shaft of the centrifuge through a set screw and rotates with the rotating shaft; the stationary ring is fixed to the mechanical seal base through bolts.

2. The online cleaning and sterilizing disc centrifuge according to claim 1, characterized in that: The multiple spray ports include a first spray port fixed on the upper housing flange of the centrifuge, with a spray direction toward the inner side of the centrifugal chamber, the outer wall of the centrifugal pump and / or the inner side of the flange of the centrifuge.

3. The online cleaning and sterilizing disc centrifuge according to claim 2, characterized in that: The multiple spray ports also include a second spray port fixed on the upper housing flange of the centrifuge, with a spray direction toward the outer side of the centrifuge, the upper housing and / or the outer side of the flange.

4. The online cleaning and sterilizing disc centrifuge according to claim 3, characterized in that: The multiple spray ports also include a third spray port, which is fixed on the upper casing flange of the centrifuge, and the spray direction is toward the outer surface of the drum cover, the upper casing and / or the outer side of the flange of the centrifuge.

5. The online cleaning and sterilizing disc centrifuge according to claim 4, characterized in that: The multiple spray ports also include a fourth spray port, which is fixed on the outside of the upper cover shell of the centrifuge, and the spray direction is toward the outer surface of the drum, the upper cover shell and / or the large locking ring of the centrifuge.

6. The online cleaning and sterilizing disc centrifuge according to claim 5, characterized in that: The multiple spray ports also include a fifth spray port, which is fixed at the operating water outlet of the lower casing of the centrifuge, and the spray direction is toward the bottom of the drum and / or the lower casing of the centrifuge.

7. The online cleaning and sterilizing disc centrifuge according to claim 6, characterized in that: The spray ball is arranged above the material tank of the centrifuge, and the spraying direction is toward the material tank, the sight glass and / or the sight window of the centrifuge.

8. The online cleaning and sterilizing disc centrifuge according to claim 1, characterized in that: It also includes a sealing gasket, which is used to seal the contact surface between the lower cover shell of the centrifuge and the mechanical seal base.

9. The online cleaning and sterilizing disc centrifuge according to claim 8, characterized in that: It also includes an O-ring, which is installed on the periphery of the dynamic ring and / or the static ring.

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