Sealing device for a homogeniser and homogeniser

Abstract

The application discloses a sealing device of a homogenizer and the homogenizer. The sealing device comprises a piston and a plunger. The piston comprises a first lip and a second lip on a side of the piston facing the plunger. The first lip and the second lip are arranged in sequence and are spaced apart in the axial direction of the plunger. The first lip and the second lip are arranged around and are attached to the outer circumferential surface of the plunger. The double-lip structure of the first lip and the second lip arranged on the side of the piston facing the plunger is used to scrape off the material adhered to the plunger. The second lip is used to prevent the residual material generated by the friction between the first lip and the plunger from entering the space between the plunger and the piston, thereby improving the sealing effect and prolonging the service life of the sealing device.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment, and more particularly to sealing devices for homogenizers and homogenizers. Background Technology

[0002] High-pressure homogenizers are used to homogenize suspended materials by forcing them through specialized internal cavities at high speeds under ultra-high pressure, causing chemical or physical changes. The sealing device of the homogenizer is a crucial component for preventing slurry leakage or the intrusion of external impurities. In existing homogenizers, the relative movement between the plug and plunger in the sealing device during operation makes sealing difficult, often resulting in slurry entering between the plug and plunger, causing wear on the sealing device. Utility Model Content

[0003] In view of this, this application provides a sealing device for a homogenizer and a homogenizer. By setting a double-lip structure such as a first lip and a second lip on the plug of the sealing device, the first lip mainly scrapes off the material adhering to the plunger, and the second lip further prevents residual material generated by friction between the first lip and the plunger from entering between the plunger and the plug, thereby improving the sealing effect and extending the service life of the plug seal.

[0004] In a first aspect, this application provides a sealing device for a homogenizer. The sealing device includes a plug, which is sleeved on the outer circumferential surface of a plunger in the homogenizer. The plunger is used for reciprocating motion relative to the plug. The plug includes a first lip and a second lip located on the side of the plug facing the plunger. The first lip and the second lip are arranged sequentially at intervals along the axial direction of the plunger. The first lip and the second lip are used to surround and fit against the outer circumferential surface of the plunger.

[0005] This application employs a double-lip structure with a first lip and a second lip. Taking the first lip located on the outer side of the plunger's axial direction as an example, the first lip primarily functions as a scraper, promptly removing material adhering to the plunger. Simultaneously, the first lip also serves a sealing function, preventing material from entering between the plunger and the end cap. Because the first lip scrapes material from the plunger and simultaneously seals, it effectively prevents material from entering between the first and second lip. Even if a small amount of material does enter this area, it will not exert a significant force on the second lip in the axial direction of the plunger. Therefore, even if a small amount of material enters this area, it can be stopped by the second lip, preventing material from entering between the plunger and the end cap. This avoids material entering between the plunger and the end cap, thus preventing wear on the plunger and end cap, improving the sealing effect between them, and extending the service life of the end cap.

[0006] In one possible implementation, the first lip and the second lip are located at the same end of the plug in the axial direction.

[0007] In this embodiment, during the reciprocating motion of the plunger, the first lip and the second lip are located at the same end in the axial direction of the plunger. Taking the first lip as being located on the outer side of the plunger in the axial direction as an example, the first lip promptly scrapes off the material adhering to the plunger, while the second lip can block a very small amount of material entering between the first and second lip from the first lip, thus preventing material from entering between the plunger and the plunger and causing wear on both. Since the first and second lips are located at the same end of the plunger, the fit between them can be effectively improved, enhancing the sealing effect between the plunger and the plunger, reducing the risk of material entering between the plunger and the plunger, and thus increasing the service life of the plunger.

[0008] In one possible implementation, the distance between the first lip and the second lip in the axial direction is 1mm-2mm.

[0009] In this embodiment, when the distance between the first lip and the second lip is within the range of 1mm-2mm, the space available for accommodating material between the first and second lip is small. Therefore, less material may enter the space between the first and second lip, thereby reducing the probability of material passing through the second lip and entering between the plunger and the plug, thus improving the sealing effect after the first and second lips are engaged. Furthermore, during the reciprocating motion of the plunger, after the first lip scrapes off the material adhering to the plunger, the second lip further scrapes off any residual material generated by friction between the first lip and the plunger, preventing the distance between the two lips from being too large, which could lead to the leakage of residual material generated by friction between the first lip and the plunger into other parts of the device.

[0010] In one possible implementation, in the axial direction, the first lip is located on the side of the second lip closer to the hopper, and the size of the first lip is larger than the size of the second lip along the axial direction of the plunger.

[0011] In this embodiment, because the first lip is closer to the hopper during the reciprocating motion of the plunger, it experiences a greater force exerted by the material. Therefore, by setting the size of the first lip to be larger than that of the second lip, the first lip can withstand a greater axial force exerted by the material, thereby improving its ability to scrape off material adhering to the plunger and resulting in a better seal. Furthermore, because the second lip is smaller, it can maintain a more stable sealing contact with the plunger under dynamic operating conditions (especially at high speeds or when vibrations are present), further improving the sealing effect between the second lip and the plunger.

[0012] In one possible implementation, the sealing device includes a housing, and the plunger further includes a third lip and a fourth lip, which are arranged sequentially at intervals along the axial direction of the plunger. The third lip and the fourth lip are located on the side of the plunger near the inner circumferential surface of the housing, and are used to surround and fit against the inner circumferential surface of the housing.

[0013] In this embodiment, by providing a third lip and a fourth lip, and by fitting the third lip and the fourth lip to fit the shell, material is prevented from flowing between the plug and the shell, thereby increasing the sealing effect between the plug and the shell.

[0014] In one possible implementation, the sealing device further includes a guide ring, which is sleeved on the outer circumferential surface of the plunger. Along the axial direction of the plunger, the guide ring and the plunger are arranged in sequence. The guide ring is located on the side of the plunger closer to the hopper of the homogenizer. In the axial direction, the first lip is located on the side of the second lip closer to the guide ring.

[0015] In this embodiment, since the guide ring is located between the hopper and the plunger, the guide ring can initially scrape the material on the plunger to reduce the force exerted by the material during the first lip scraping, thereby improving the service life of the first lip and thus improving the service life of the plunger.

[0016] In one possible implementation, the guide ring includes a scraper portion surrounding the plunger, with one end of the scraper portion axially close to the hopper and conforming to the outer peripheral surface of the plunger.

[0017] In this embodiment, by setting one end of the scraping part to fit against the outer peripheral surface of the plunger, the scraping part can contact the plunger; and the plunger can reciprocate relative to the scraping part, so that the scraping part can scrape off the material attached to the outer peripheral surface of the plunger in a timely manner, thereby reducing the force exerted by the material on the first lip during scraping, thereby improving the service life of the first lip and thus improving the service life of the plunger.

[0018] In one possible implementation, the guide ring has a first groove on the side near the hopper, and the first groove has a guide channel that passes through the guide ring in the axial direction on its bottom wall. The plunger has a second groove on the side near the guide ring, and the guide channel communicates with the second groove. The first groove includes a scraping part near the lower side wall of the plunger in the radial direction of the plunger.

[0019] In this embodiment, the guide channel facilitates material flow, and the guide channel is connected to the second groove so that the material can flow into the second groove through the guide channel, thereby increasing the pressure of the plug and enhancing the sealing effect.

[0020] In one possible implementation, the sealing device further includes a housing, at least one first elastic baffle, and at least one second elastic baffle. The guide ring, the plunger, the first elastic baffle, and the second elastic baffle are arranged sequentially along the axial direction of the plunger. Along the radial direction of the plunger, the two ends of the first elastic baffle abut against the outer circumferential surface of the plunger and the inner circumferential surface of the housing, respectively. Along the radial direction of the plunger, the two ends of the second elastic baffle are used to abut against the plunger and the housing, respectively.

[0021] In this embodiment, by setting a first elastic baffle that abuts against the housing and the plunger, and a second elastic baffle that abuts against the housing and the plunger, the plunger can buffer the axial or radial vibration of the plunger and other devices such as the diaphragm when the plunger reciprocates, thus avoiding damage to the double lip structure of the diaphragm due to axial or radial vibration, which would affect the scraping operation, and also preventing damage to other components that would cause the sealing device to fail.

[0022] Secondly, this application provides a homogenizer, including a high-pressure homogenizer and the aforementioned sealing device. By using the sealing device of the homogenizer, the slurry adhering to the plunger can be scraped off, reducing the amount of slurry flowing between the plunger and the plug and causing wear on the sealing device, thereby enhancing the sealing effect of the plug and extending its service life. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0024] Figure 1 This is a schematic diagram of a sealing device for a homogenizer provided in one embodiment of this application;

[0025] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0026] Figure 3 This is a cross-sectional view of the sealing device of the homogenizer provided in the embodiments of this application;

[0027] Figure 4 This is a side view of a pan-aperture provided in one embodiment of this application;

[0028] Figure 5 This is another cross-sectional view of the sealing device of the homogenizer provided in one embodiment of this application;

[0029] Figure 6 This is another side view of the pan-seal provided in one embodiment of this application;

[0030] Figure 7 This is a side view of a flow guide ring and a flow plug provided in one embodiment of this application;

[0031] Figure 8 yes Figure 1 A magnified view of a portion of point B in the middle;

[0032] Figure 9 This is another cross-sectional view of the sealing device of the homogenizer provided in one embodiment of this application;

[0033] Figure 10 This is a schematic diagram of a sealing device for a homogenizer with a first elastic baffle provided in one embodiment of this application;

[0034] Figure 11 This is a side view of the sealing device of a homogenizer provided in one embodiment of this application.

[0035] Explanation of reference numerals in the attached figures

[0036] 1- Sealing device of the homogenizer; 2- Hopper;

[0037] 10-Plunger;

[0038] 20-Pinus; 21-Second groove; 22-First lip; 23-Second lip; 24-Third lip; 25-Fourth lip;

[0039] 30 - Guide ring; 31 - Scraper section; 311 - First inclined surface; 32 - First groove; 33 - Guide channel; 322 - Lower sidewall;

[0040] 40 - Casing;

[0041] 50 - First elastic baffle;

[0042] 60 - Second elastic baffle. Detailed Implementation

[0043] The embodiments of this application are described below with reference to the accompanying drawings.

[0044] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0045] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0046] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] It should be understood that the terms "first," "second," etc., used in this application are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0048] In the description of this application, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] The possible embodiments of this application are described below with reference to the accompanying drawings.

[0051] High-pressure homogenizers are used to homogenize suspended materials by forcing them through specialized internal cavities at high speeds under ultra-high pressure, causing chemical or physical changes. The sealing device of the homogenizer is a crucial component for preventing slurry leakage or the intrusion of external impurities. In existing homogenizers, the relative movement between the plug and plunger in the sealing device during operation makes sealing difficult, often resulting in slurry entering between the plug and plunger, causing wear on the sealing device.

[0052] The sealing device for the homogenizer provided in this application embodiment is suitable for high-pressure homogenizers and is mainly used in industries such as biology, medicine, food, and chemicals. Figure 1 This is a schematic diagram of a sealing device for a homogenizer provided in one embodiment of this application. Figure 2 yes Figure 1 A magnified view of a section at point A. (See also...) Figure 1 and Figure 2As shown in the embodiment of this application, the sealing device 1 of the homogenizer is suitable for high-pressure homogenizing equipment, including a plug 20 and a plunger 10. By providing a double-lip structure such as a first lip 22 and a second lip 23 on the side of the plug 20 facing the plunger 10, the first lip 22 is used to scrape off the material adhering to the plunger, and the second lip 23 is used to prevent residual material generated by friction between the first lip 22 and the plunger 10 from entering between the plunger 10 and the plug 20, thereby improving the sealing effect and extending the service life of the sealing device 1.

[0053] In one embodiment, the sealing device 1 includes a ring plug 20 and a plunger 10. The plunger 10 is cylindrical, but can also be other cylindrical shapes. The ring plug 20 is annular and is fitted onto the outer circumferential surface of the plunger 10 in the homogenizer. The inner circumferential surface of the ring plug 20 is in close contact with the outer circumferential surface of the plunger 10, so that the ring plug 20 surrounds and tightly adheres to the plunger 10, thereby improving the stability between the ring plug 20 and the plunger 10. Typically, material enters the hopper 2 through an external conveying device. Along the axial direction of the plunger 10, the plunger 10 can reciprocate relative to the ring plug 20, thereby applying high pressure to the material conveyed in the hopper 2 and pushing the material. That is, the plunger 10 has a moving state relative to the ring plug 20. Along the side of the plug 20 facing the plunger 10, the plug 20 is provided with a first lip 22 and a second lip 23. Along the axial direction of the plunger 10, the first lip 22 and the second lip 23 are arranged alternately on the plug 20. When the plunger 10 can reciprocate relative to the plug 20, the first lip 22 can scrape off the material adhering to the plunger 10 in time, preventing the material remaining on the plunger 10 from entering between the plunger 10 and the plug 20 and causing wear to the plunger 10 and the plug 20. At the same time, it also has a sealing function and can effectively prevent the material on the plunger 10 from entering between the first lip 22 and the second lip 23. Even if a small amount of material enters between the first lip 22 and the second lip 23, it will not exert a large force on the second lip 23 in the axial direction of the plunger 10. Therefore, even if a small amount of material enters between the first lip 22 and the second lip 23, it can be stopped by the second lip 23.

[0054] Figure 3 This is a cross-sectional view of the sealing device of the homogenizer provided in an embodiment of this application. Figure 4 This is a side view of a pan-filled device provided in one embodiment of this application. (See also...) Figure 3 and Figure 4As shown, in one embodiment, there is a certain distance between the first lip 22 and the second lip 23 along the axial direction of the plunger 10. After the first lip 22 scrapes off the material attached to the plunger 10, the second lip 23 can further scrape off the residual material, further preventing the residual material generated by the friction between the first lip 22 and the plunger 10 from entering between the plunger 10 and the plug 20, causing wear to the plunger 10 and the plug 20, thereby improving the sealing effect of the sealing device 1.

[0055] Continue reading Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment, the first lip 22 and the second lip 23 are both annular in shape. The first lip 22 and the second lip 23 are arranged around the outer peripheral surface of the plunger 10, and the inner peripheral surfaces of the first lip 22 and the second lip 23 are fitted to the outer peripheral surface of the plunger 10, so that the first lip 22 and the second lip 23 surround and fit tightly against the plunger 10, thereby improving the stability between the first lip 22 and the plunger 10, and between the second lip 23 and the plunger 10.

[0056] In one embodiment, the first lip 22 and the second lip 23 include, but are not limited to, a sealing lip assembly. Other similar structures in practical applications, such as other sealing assemblies that have scraping and sealing functions, are all within the scope of protection of this application.

[0057] Continue reading Figure 2 , Figure 3 and Figure 4As shown, in one embodiment, along the axial direction of the plunger 10, a first lip 22 and a second lip 23 are sequentially and spaced apart on the plug 20, and the first lip 22 and the second lip 23 are located at the same end of the plug 20. Along the axial direction of the plunger 10, the first lip 22 is located on the side close to the hopper 2. When the plunger 10 can reciprocate relative to the plug 20, the first lip 22 is located on the side close to the hopper 2, which can promptly scrape off the material adhering to the plunger 10, preventing the material remaining on the plunger 10 from entering between the plunger 10 and the plug 20 and causing wear to the plunger 10 and the plug 20. The second lip 23 and the first lip 22 are located at the same end of the plunger 20. After the first lip 22 scrapes off the material adhering to the plunger 10, the second lip 23 can block a very small amount of material entering between the first lip 22 and the second lip 23 from the first lip 22. The second lip 23 can further scrape off a small amount of residual material on the plunger 10, further preventing residual material generated by friction between the first lip 22 and the plunger 10 from entering between the plunger 10 and the plunger 20, causing wear to the plunger 10 and the plunger 20. Since the first lip 22 and the second lip 23 are located at the same end of the plunger 20, the fit between the two can be effectively improved, the sealing effect between the plunger 20 and the plunger 10 can be improved, the risk of material entering between the plunger 20 and the plunger 10 can be reduced, and the service life of the plunger 20 can be improved.

[0058] Continue reading Figure 2 , Figure 3 and Figure 4As shown, in one embodiment, along the axial direction of the plunger 10, a first lip 22 and a second lip 23 are arranged sequentially at intervals on the plug 20, and the first lip 22 and the second lip 23 are located at the same end of the plug 20. The first lip 22 is located on the side close to the hopper 2, and the distance between the first lip 22 and the second lip 23 is 1mm-2mm. When the distance between the first lip 22 and the second lip 23 is in the range of 1mm-2mm, since the space available for accommodating materials between the first lip 22 and the second lip 23 is small, less material may enter between the first lip 22 and the second lip 23, thereby reducing the probability of material passing through the second lip 23 and entering between the plug 20 and the plunger 10, thereby improving the sealing effect after the first lip 22 and the second lip 23 are engaged. After the first lip 22 scrapes off the material adhering to the plunger 10, the second lip 23 immediately scrapes off the remaining material on the plunger 10. This further prevents residual material from entering between the plunger 10 and the plug 20 due to friction between the first lip 22 and the plunger 10, thus avoiding wear on the plunger 10 and the plug 20. This improves the sealing effect of the sealing device 1 and extends its service life. When the distance between the first lip 22 and the second lip 23 is too small, for example, less than 1 mm, material residue is likely to remain when the second lip 23 scrapes off the residual material on the plunger 10. This results in poor scraping performance of the second lip 23, causing excess material to enter other parts of the sealing device 1, thus affecting the sealing effect of the sealing device 1. When the gap between the first lip 22 and the second lip 23 is too large, for example, the gap between the first lip 22 and the second lip 23 is greater than 2mm, after the first lip 22 scrapes off the material attached to the plunger 10, the residual material generated by the friction between the first lip 22 and the plunger 10 is not scraped off by the second lip 23 and directly leaks into other parts of the sealing device 1, thereby affecting the sealing effect of the sealing device 1.

[0059] Continue reading Figure 2 , Figure 3 and Figure 4As shown, in one embodiment, along the axial direction of the plunger 10, a first lip 22 and a second lip 23 are sequentially and spaced apart on the plunger 20. The first lip 22 and the second lip 23 have specific dimensions, both smaller than the size of the plunger 20, with the first lip 22 being larger than the second lip 23. When the plunger 10 reciprocates relative to the plunger 20 to push material, the first lip 22, being closer to the hopper 2, experiences a greater force from the material. Therefore, by setting the size of the first lip 22 to be larger than that of the second lip 23, the first lip 22 can withstand a greater force from the material in the axial direction of the plunger 10, thereby improving the first lip 22's ability to scrape away material adhering to the plunger and resulting in a better seal. Furthermore, because the second lip 23 is smaller, it can maintain a more stable sealing contact with the plunger 10 under dynamic conditions (especially at high speeds or when vibrations are present), further improving the sealing effect between the second lip 23 and the plunger 10.

[0060] Figure 5 This is another cross-sectional view of the sealing device of a homogenizer provided in one embodiment of this application. (See also...) Figure 5 As shown, in one embodiment, the sealing device 1 includes a housing 40, which surrounds and is fitted around the outer peripheral surfaces of the plug 20 and the plunger 10 for assembling the plug 20 and the plunger 10. The outer peripheral surfaces of the plug 20 and the plunger 10 are respectively fitted to the inner peripheral surfaces of the housing 40, so that the plug 20 and the plunger 10 have a certain sealing effect with the housing 40, preventing material from flowing into the gap between the plug 20 and the plunger 10 and the housing 40, thereby affecting the working efficiency of the sealing device 1.

[0061] Figure 6 This is another side view of the pantograph provided in one embodiment of this application. (See also...) Figure 5 and Figure 6 As shown, in one embodiment, along the side of the plug 20 facing the inner circumferential surface of the housing 40, a third lip 24 and a fourth lip 25 are also provided on the plug 20. Along the axial direction of the plunger 10, the third lip 24 and the fourth lip 25 are arranged sequentially at intervals on the plug 20, and the outer circumferential surfaces of the third lip 24 and the fourth lip 25 respectively surround and adhere to the inner circumferential surface of the housing 40. When the plunger 10 can reciprocate relative to the plug 20 to push the material, the material flows into the space between the plug 20 and the housing 40 through the gap in the sealing device 1. The third lip 24 can promptly scrape off the material adhering between the plug 20 and the housing 40, preventing the material between the plug 20 and the housing 40 from entering other parts of the sealing device 1, thereby affecting the sealing effect of the sealing device 1.

[0062] Continue reading Figure 5 and Figure 6 As shown, in one embodiment, there is a certain distance between the third lip 24 and the fourth lip 25 along the axial direction of the plunger 10. After the third lip 24 scrapes off the material attached between the plunger 20 and the housing 40, the fourth lip 25 can further scrape off the remaining material, preventing the remaining material between the third lip 24 and the fourth lip 25 from further entering other parts of the sealing device 1 and thus affecting the sealing effect of the sealing device 1.

[0063] In one embodiment, both the third lip 24 and the fourth lip 25 are annular in shape.

[0064] In one embodiment, the third lip 24 and the fourth lip 25 have certain dimensions. The dimensions of the third lip 24 and the fourth lip 25 are both smaller than the dimensions of the plug 20, and the dimensions of the third lip 24 are larger than the dimensions of the fourth lip 25. When the plunger 10 can reciprocate relative to the plug 20 to push the material, the third lip 24 is larger than the fourth lip 25. When the third lip 24 scrapes off the material attached between the plug 20 and the housing 40, it can scrape off more material, avoiding excessive material remaining between the plug 20 and the housing 40, which would cause too much material to enter the part between the third lip 24 and the fourth lip 25 and affect the working efficiency of the second lip 23.

[0065] In one embodiment, the dimensions of the third lip 24 and the fourth lip 25 are both smaller than the dimensions of the plug 20, and the dimensions of the third lip 24 are equal to the dimensions of the fourth lip 25.

[0066] In one embodiment, along the radial direction of the plunger 10, a first lip 22 and a third lip 24 are disposed opposite to each other at both ends of the plunger 20, and a second lip 23 and a fourth lip 25 are disposed opposite to each other at both ends of the plunger 20.

[0067] In one embodiment, along the radial direction of the plunger 10, the size of the first lip 22 is equal to the size of the third lip 24, and the size of the second lip 23 is equal to the size of the fourth lip 25.

[0068] In one embodiment, the material of PanSe 20 is polyetheretherketone (PEEK).

[0069] In one embodiment, the first lip 22, the second lip 23, the third lip 24, and the fourth lip 25 are all made of polyetheretherketone (PEEK). When the sealing device 1 performs sealing work under high pressure, the high melting point of PEEK prevents the plug 20, the first lip 22, the second lip 23, the third lip 24, and the fourth lip 25 from softening, thus preventing the plug 20 from failing to seal and extending the service life of the plug 20.

[0070] Continue reading Figure 5As shown, in one embodiment, the sealing device 1 further includes a guide ring 30. The guide ring 30 is ring-shaped and is sleeved on the outer peripheral surface of the plunger 10 of the homogenizer. The inner peripheral surface of the guide ring 30 is in close contact with the outer peripheral surface of the plunger 10, so that the guide ring 30 can be tightly attached to the plunger 10, thereby improving the stability between the guide ring 30 and the plunger 10. In one embodiment, a housing 40 surrounds and is sleeved on the outer peripheral surface of the guide ring 30. The housing 40 can assemble the guide ring 30, and the outer peripheral surface of the guide ring 30 is in close contact with the inner peripheral surface of the housing 40, making the arrangement of the guide ring 30 more stable.

[0071] Continue reading Figure 5 As shown, in one embodiment, a guide ring 30 and a flood plug 20 are arranged sequentially along the axial direction of the plunger 10. The guide ring 30 and the flood plug 20 are fitted together. The guide ring 30 is located on the side of the flood plug 20 close to the hopper 2 of the homogenizer. The plunger 10 can reciprocate relative to the guide ring 30 along the axial direction of the plunger 10 to apply high pressure to push the material conveyed in the hopper 2. Since the guide ring 30 is located between the hopper 2 and the flood plug 20, the guide ring 30 can initially scrape the material on the plunger 10 to reduce the force applied by the material when the first lip 22 scrapes the material, thereby improving the service life of the first lip 22 and thus improving the service life of the flood plug 20.

[0072] In one embodiment, the first lip 22 and the second lip 23 are both located on the side close to the guide ring 30 along the axial direction of the plunger 10. When the plunger 10 reciprocates relative to the flood plug 20 to push the material, the guide ring 30 can guide the material to flow into the flood plug 20. Subsequently, the first lip 22 scrapes off the material adhering to the plunger 10, preventing residual material on the plunger 10 from entering between the plunger 10 and the flood plug 20 and causing wear to the plunger 10 and the flood plug 20. After the first lip 22 scrapes off the material adhering to the plunger 10, the second lip 23 can further scrape off the residual material on the plunger 10, further preventing residual material generated by friction between the first lip 22 and the plunger 10 from entering between the plunger 10 and the flood plug 20 and causing wear to the plunger 10 and the flood plug 20, thereby improving the sealing effect of the sealing device 1 and extending the service life of the sealing device 1.

[0073] Figure 7 This is a side view of a flow guide ring and a flow plug provided in one embodiment of this application. (See also...) Figure 7As shown, in one embodiment, a scraping part 31 is provided on the guide ring 30. The scraping part 31 is arranged around the plunger 10. One end of the scraping part 31 is fitted to the outer peripheral surface of the plunger 10, so that the scraping part 31 can be tightly attached to the plunger 10. The plunger 10 can reciprocate relative to the scraping part 31 to push the material along the axial direction of the plunger 10. The scraping part 31 can scrape off the material attached to the outer peripheral surface of the plunger 10 in time, so as to reduce the force exerted by the material on the first lip 22 when scraping, thereby improving the service life of the first lip 22 and thus improving the service life of the plunger 20.

[0074] In one embodiment, one end of the scraper 31 is fitted against the outer peripheral surface of the plunger 10, so that the scraper 31 can fit tightly against the plunger 10. The surface of the scraper 31 away from the plunger 10 is flat, which is used to guide the material to flow into the area away from the plunger 10 and the guide ring 30, thereby preventing the material from flowing into the area between the plunger 10 and the flood plug 20, causing wear on the plunger 10 and the flood plug 20, resulting in poor sealing effect of the sealing device 1.

[0075] Continue reading Figure 7 As shown, in one embodiment, one end of the scraper 31 is fitted to the outer peripheral surface of the plunger 10, so that the scraper 31 can be in close contact with the plunger 10. The surface of the scraper 31 away from the plunger 10 is a first inclined surface 311 with a slight tilt angle. By designing the surface of the scraper 31 to be a first inclined surface 311, it is beneficial to guide more material into the area away from the plunger 10 and the guide ring 30, which improves the material flow effect and avoids the material flowing into the area between the plunger 10 and the flood plug 20, causing wear on the plunger 10 and the flood plug 20. This is beneficial to improving the sealing effect of the sealing device 1.

[0076] Continue reading Figure 7 As shown, in one embodiment, a first groove 32 is provided on the side of the guide ring 30 near the hopper 2 along the axial direction of the plunger 10. When the plunger 10 reciprocates relative to the guide ring 30 to apply high pressure to the material conveyed in the hopper 2 and push the material, the first groove 32 is used to guide the flow of the material. A guide channel 33 is provided on the bottom wall of the first groove 32 along the axial direction of the plunger 10. The guide channel 33 passes through the guide ring 30 and is used to guide the flow direction of the material to prevent the material from flowing into other areas of the sealing device 1 and affecting the sealing effect of the sealing device 1.

[0077] Figure 8 yes Figure 1 A magnified view of a portion at point B. In one embodiment, see [reference needed]. Figure 7 and Figure 8As shown, a second groove 21 is provided on the side of the plunger 20 near the guide ring 30 along the axial direction of the plunger 10. The guide channel 33 is connected to the second groove 21. The guide channel 33 is used to guide the flow direction of the material. When the plunger 10 reciprocates relative to the guide ring 30 to apply high pressure to the material conveyed in the hopper 2 and push the material, the first groove 32 is used to guide the flow of the material, and the guide channel 33 is used to guide the flow direction of the material, so that the material flows from the first groove 32 to the second groove 21, thereby increasing the pressure at the plunger 20, which helps to enhance the sealing effect of the sealing device 1.

[0078] In one embodiment, a scraping part 31 is provided in the first groove 32 near the lower side wall of the plunger 10 in the radial direction of the plunger 10, for scraping off the material adhering to the outer peripheral surface of the plunger 10.

[0079] Figure 9 This is another cross-sectional view of the sealing device of the homogenizer provided in one embodiment of this application. Figure 10 This is a schematic diagram of a sealing device for a homogenizer with a first elastic baffle provided in one embodiment of this application. (See also...) Figure 9 and Figure 10 As shown, in one embodiment, the sealing device 1 further includes a first elastic baffle 50. The flow guide ring 30, the flood plug 20 and the first elastic baffle 50 are arranged sequentially along the axial direction of the plunger 10. The first elastic baffle 50 has two opposite ends along the radial direction of the plunger 10, and the two ends of the first elastic baffle 50 are respectively attached to the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40.

[0080] In one embodiment, the first elastic baffle 50 is annular in shape.

[0081] Continue reading Figure 9 and Figure 10 As shown, in one embodiment, the first elastic baffle 50 has a certain elasticity. The two ends of the first elastic baffle 50 can abut against the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40 respectively along the radial direction of the plunger 10. When the plunger 10 reciprocates and applies high pressure to push the material conveyed in the hopper 2, a high-frequency vibration phenomenon will be generated along the axial direction of the plunger 10. The first elastic baffle 50 can buffer the vibration of the plunger 10 and other devices such as the screw 20 in the axial direction, avoid structural damage to the screw 20 caused by the vibration of the plunger 10 in the axial direction, and affect the scraping operation. At the same time, it can prevent the sealing device 1 from failing due to damage to other components.

[0082] In one embodiment, the number of first elastic baffles 50 includes two. The two first elastic baffles 50 are arranged sequentially. The two ends of the two first elastic baffles 50 can respectively abut against the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40 along the radial direction of the plunger 10. When the plunger 10 reciprocates and applies high pressure to push the material conveyed in the hopper 2, a high-frequency vibration phenomenon will be generated along the axial direction of the plunger 10. The multiple first elastic baffles 50 can improve the buffering effect on the vibration of the plunger 10 and other devices such as the hopper 20 in the axial direction, ensure the safety of the sealing device 1, and prevent the sealing device 1 from failing.

[0083] Figure 11 This is a side view of the sealing device of a homogenizer provided in one embodiment of this application. In one embodiment, see [reference needed]. Figure 9 and Figure 11 As shown, the sealing device 1 also includes a second elastic baffle 60. The guide ring 30, the plug 20, the first elastic baffle 50 and the second elastic baffle 60 are arranged in sequence along the axial direction of the plunger 10. The second elastic baffle 60 has two opposite ends along the radial direction of the plunger 10, and the two ends of the second elastic baffle 60 are respectively attached to the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40.

[0084] In one embodiment, the second elastic baffle 60 is annular in shape.

[0085] See Figure 11 As shown, in one embodiment, the second elastic baffle 60 has a certain elasticity. The two ends of the second elastic baffle 60 can abut against the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40 respectively along the radial direction of the plunger 10. When the plunger 10 reciprocates and applies high pressure to push the material conveyed in the hopper 2, a high-frequency vibration phenomenon will be generated along the radial direction of the plunger 10. The second elastic baffle 60 can buffer the vibration of the plunger 10 and other devices such as the squeegee 20 in the radial direction, avoid structural damage to the squeegee 20 caused by the vibration of the plunger 10 in the radial direction, and affect the scraping operation. At the same time, it can prevent the sealing device 1 from failing due to damage to other components.

[0086] In one embodiment, the number of second elastic baffles 60 includes two, which are arranged sequentially. The two ends of the two second elastic baffles 60 can respectively abut against the outer peripheral surface of the plunger 10 and the inner peripheral surface of the housing 40 along the radial direction of the plunger 10. When the plunger 10 reciprocates and applies high pressure to push the material conveyed in the hopper 2, a high-frequency vibration phenomenon will be generated along the radial direction of the plunger 10. The multiple second elastic baffles 60 can improve the buffering effect on the vibration of the plunger 10 and other devices such as the hopper 20 in the radial direction, ensure the safety of the sealing device 1, and prevent the sealing device 1 from failing.

[0087] Secondly, this application provides a homogenizer, including a high-pressure homogenizer and the aforementioned sealing device 1. By using the sealing device 1 of the homogenizer, the slurry adhering to the plunger 10 can be scraped off, reducing the amount of slurry flowing between the plunger 10 and the plug 20 and causing wear on the sealing device 1, thereby enhancing the sealing effect of the plug 20 and extending its service life.

[0088] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A sealing device (1) for a homogenizer, characterized in that, The sealing device (1) includes a plug (20), which is fitted on the outer circumferential surface of the plunger (10) of the homogenizer, and the plunger (10) is used to reciprocate relative to the plug (20); The plug (20) includes a first lip (22) and a second lip (23) located on the side of the plug (20) facing the plunger (10). The first lip (22) and the second lip (23) are arranged alternately along the axial direction of the plunger (10). The first lip (22) and the second lip (23) are used to surround and fit the outer peripheral surface of the plunger (10).

2. The sealing device (1) of the homogenizer according to claim 1, characterized in that, The first lip (22) and the second lip (23) are located at the same end of the plug (20) in the axial direction.

3. The sealing device (1) of the homogenizer according to claim 2, characterized in that, The distance between the first lip (22) and the second lip (23) in the axial direction is 1mm-2mm.

4. The sealing device (1) of the homogenizer according to any one of claims 1-3, characterized in that, In the axial direction, the first lip (22) is located on the side of the second lip (23) near the hopper, and the size of the first lip (22) is larger than the size of the second lip (23) along the axial direction of the plunger (10).

5. The sealing device (1) of the homogenizer according to any one of claims 1-3, characterized in that, The sealing device (1) includes a housing (40), and the plug (20) further includes a third lip (24) and a fourth lip (25). The third lip (24) and the fourth lip (25) are arranged alternately along the axial direction of the plunger (10). The third lip (24) and the fourth lip (25) are located on the side of the plug (20) near the inner circumferential surface of the housing (40) for surrounding and fitting on the inner circumferential surface of the housing (40).

6. The sealing device (1) of the homogenizer according to any one of claims 1-3, characterized in that, The sealing device (1) further includes a guide ring (30), which is sleeved on the outer circumferential surface of the plunger (10). Along the axial direction of the plunger (10), the guide ring (30) and the plug (20) are arranged in sequence. The guide ring (30) is located on the side of the plug (20) close to the hopper (2) of the homogenizer. In the axial direction, the first lip (22) is located on the side of the second lip (23) close to the guide ring (30).

7. The sealing device (1) of the homogenizer according to claim 6, characterized in that, The guide ring (30) includes a scraper (31) surrounding the plunger (10), the scraper (31) being in contact with the outer peripheral surface of the plunger (10) at one end in the axial direction near the hopper (2).

8. The sealing device (1) of the homogenizer according to claim 7, characterized in that, The guide ring (30) has a first groove (32) on the side near the hopper (2). The first groove (32) has a guide channel (33) that passes through the guide ring (30) in the axial direction on the bottom wall of the first groove (32). The plunger (20) has a second groove (21) on the side near the guide ring (30). The guide channel (33) communicates with the second groove (21). The first groove (32) includes the scraper part (31) on the lower side wall of the plunger (10) in the radial direction of the plunger (10).

9. The sealing device (1) according to claim 7, characterized in that, The sealing device (1) further includes a housing (40), at least one first elastic baffle (50) and at least one second elastic baffle (60). Along the axial direction of the plunger (10), the guide ring (30), the plug (20), the first elastic baffle (50) and the second elastic baffle (60) are arranged in sequence. Along the radial direction of the plunger (10), the two ends of the first elastic baffle (50) abut against the outer peripheral surface of the plunger (10) and the inner peripheral surface of the housing (40) respectively. Along the radial direction of the plunger (10), the two ends of the second elastic baffle (60) abut against the outer peripheral surface of the plunger (10) and the inner peripheral surface of the housing (40) respectively.

10. A homogenizer, characterized in that, It includes a high-pressure homogenizer and a sealing device (1) as described in any one of claims 1-9.

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