Multi-channel end face type sealing device

Abstract

The invention discloses a multi-channel end face type sealing device. The multi-channel end face type sealing device comprises a bearing seat, a sealing ring and a sealing ring, the main shaft is rotatably connected with the bearing seat; the first liquid passing assembly is arranged on the main shaft in a sleeving mode and connected with the main shaft, and the first liquid passing assembly is provided with a plurality of first liquid passing flow channels; the second liquid passing assembly is arranged on the main shaft in a sleeving mode and located between the first liquid passing assembly and the bearing seat, the second liquid passing assembly is connected with the bearing seat, and the second liquid passing assembly is provided with a plurality of second liquid passing flow channels; the elastic assembly comprises a first elastic piece and a second elastic piece, and the first elastic piece and the second elastic piece are arranged in the radial direction of the main shaft in a spaced mode. According to the multi-channel end face type sealing device, by arranging the elastic assembly, the elastic assembly can conduct double sealing on the communication position of the first liquid passing flow channel and the second liquid passing flow channel, the leakage amount of filtrate can be reduced, and the safety and reliability of the medium flow channel can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing structures, and in particular to a multi-channel end-face sealing device. Background Art

[0002] In related technologies, existing media flow channels are generally formed by splicing multiple pipelines, resulting in pitting and intergranular corrosion at the joints of the media flow channels in a strong acid / alkali medium environment, making the media in the media flow channels prone to leakage at the joints, affecting the safety and reliability of the media flow channels, and there is room for improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide a multi-channel end-face sealing device, which can reduce the leakage amount of the medium and improve the safety and reliability of the medium flow channel.

[0004] The multi-channel end-face sealing device according to an embodiment of the present invention includes: a bearing housing; a main shaft, the main shaft is rotatably connected to the bearing housing; a first liquid-passing assembly, the first liquid-passing assembly is sleeved on the main shaft and connected to the main shaft, the first liquid-passing assembly has a plurality of first liquid-passing channels; a second liquid-passing assembly, the second liquid-passing assembly is sleeved on the main shaft and is located between the first liquid-passing assembly and the bearing housing, the second liquid-passing assembly is connected to the bearing housing, the second liquid-passing assembly has a plurality of second liquid-passing channels, and each second liquid-passing channel is adapted to communicate with at least one of the first liquid-passing channels; an elastic assembly, the elastic assembly includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are arranged at intervals along the radial direction of the main shaft, the first elastic member is configured to drive the second liquid-passing assembly to press against the first liquid-passing assembly in a compressed state, and the second elastic member is configured to press against the first liquid-passing assembly in a compressed state.

[0005] The multi-channel end-face sealing device according to an embodiment of the present invention, by providing an elastic assembly, the elastic assembly can drive the second liquid-passing assembly to press against the first liquid-passing assembly, and the elastic assembly can directly press against the first liquid-passing assembly, so that the elastic assembly can perform double sealing on the communication part of the first liquid-passing channel and the second liquid-passing channel in the radial direction of the main shaft, can improve the sealing effect on multiple medium flow channels, can reduce the leakage amount of the filtrate, and can improve the safety and reliability of the medium flow channel.

[0006] According to some embodiments of the present invention, the second liquid passing component includes: a connecting ring sleeved on the main shaft and connected to the bearing seat. The connecting ring has a plurality of mounting holes, and the plurality of mounting holes are arranged at intervals along the circumferential direction of the main shaft. Each mounting hole extends along the axial direction of the main shaft, and each mounting hole is provided with a first elastic member; a liquid passing ring connected to the connecting ring and located on the side of the connecting ring close to the first liquid passing component. A plurality of second liquid passing channels are defined in the liquid passing ring, and the plurality of second liquid passing channels are arranged at intervals along the circumferential direction of the main shaft, and each second liquid passing channel extends along the radial direction and / or the axial direction of the main shaft.

[0007] In some embodiments, the second liquid passing component further includes: a plurality of fasteners. The connecting ring has a plurality of connecting holes, and the plurality of connecting holes are arranged at intervals along the circumferential direction of the main shaft. Each connecting hole extends along the axial direction of the main shaft, and each connecting hole corresponds to a fastener. The fastener is adapted to fix the connecting ring on the bearing seat through the connecting hole.

[0008] In some embodiments, the second liquid passing component further includes: a plurality of axial limiting pins. The side of the liquid passing ring close to the connecting ring has a plurality of first axial limiting grooves, and the plurality of first axial limiting grooves are arranged at intervals along the circumferential direction of the main shaft. The side of the connecting ring close to the liquid passing ring has a plurality of second axial limiting grooves, and the plurality of second axial limiting grooves correspond to the plurality of first axial limiting grooves one by one. The axial limiting pins are respectively inserted and matched with the first axial limiting grooves and the second axial limiting grooves.

[0009] In some embodiments, the connecting ring includes: a ring body sleeved on the main shaft and connected to the bearing seat; a convex ring provided on the side of the ring body close to the first liquid passing component and connected to the ring body. The convex ring is spaced from the main shaft and extends along the circumferential direction of the main shaft. The second elastic member is arranged between the convex ring and the main shaft, and the second elastic member is connected to the convex ring and / or the ring body. The liquid passing ring is sleeved on the convex ring.

[0010] In some embodiments, at least a part of the wall surface of the outer periphery of the convex ring in the axial direction of the main shaft is a mating surface, and in the axial direction of the main shaft, the mating surface is an arc surface convex in the middle, and the wall surface of the inner periphery of the liquid passing ring is in close fit with the mating surface.

[0011] In some embodiments, one side of the liquid passing ring facing the first liquid passing component has a plurality of communication grooves. The plurality of communication grooves are arranged at intervals along the circumferential direction of the main shaft, and each communication groove extends along the circumferential direction of the main shaft. One second liquid passing channel and at least one first liquid passing channel are communicated through the communication groove, and the connection part of the second liquid passing channel and the first liquid passing channel is located at the bottom wall of the communication groove.

[0012] In some embodiments, the first liquid passing component includes: a first ring body sleeved on the main shaft. A plurality of first liquid passing channels are defined in the first ring body. The plurality of first liquid passing channels are arranged at intervals along the circumferential direction of the main shaft, and each first liquid passing channel extends along the radial direction of the main shaft and / or the axial direction of the main shaft. One side of the first ring body facing the liquid passing ring has an annular groove. In the radial direction of the main shaft, the first elastic member is adapted to drive the liquid passing ring to press against the outer part of the first ring body located in the annular groove, and the second elastic member is adapted to press against the inner part of the first ring body located in the annular groove; a second ring body sleeved on the first ring body and connected to the first ring body. A plurality of liquid passing holes are defined in the first ring body. The plurality of liquid passing holes are arranged at intervals along the circumferential direction of the main shaft, and a part of each liquid passing hole extends along the radial direction of the main shaft. Each liquid passing hole is communicated with one first liquid passing channel.

[0013] In some embodiments, the main shaft has a mounting section. The first ring body is sleeved on the mounting section and connected to the mounting section. Along the axial direction of the main shaft and in the direction close to the bearing seat, the radial dimension of the mounting section gradually increases, and the inner peripheral wall surface of the first ring body and the outer wall surface of the mounting section are closely attached.

[0014] In some embodiments, the first liquid passing component further includes: a plurality of radial limit pins. The inner peripheral wall of the first ring body has a plurality of first radial limit grooves. The plurality of first radial limit grooves are arranged at intervals along the circumferential direction of the main shaft. The outer peripheral wall of the mounting section has a plurality of second radial limit grooves, and the plurality of second radial limit grooves and the plurality of first radial limit grooves correspond to each other one by one. The radial limit pins are respectively inserted and matched with the first radial limit grooves and the second radial limit grooves.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic structural view of a multi-channel end face seal device according to some embodiments of the present invention from one perspective;

[0018] Figure 2 is a schematic structural view of a multi-channel end face seal device according to some embodiments of the present invention from another perspective;

[0019] Figure 3 is a schematic partial structural view of a multi-channel end face seal device according to some embodiments of the present invention;

[0020] Figure 4 is a partial cross-sectional view of a multi-channel end face seal device according to some embodiments of the present invention;

[0021] Figure 5 is a schematic structural view of a main shaft according to some embodiments of the present invention;

[0022] Figure 6 is a schematic structural view of a second liquid passing component according to some embodiments of the present invention from one perspective;

[0023] Figure 7 is a schematic structural view of a second liquid passing component according to some embodiments of the present invention from another perspective;

[0024] Figure 8 is an exploded view of a second liquid passing component according to some embodiments of the present invention;

[0025] Figure 9 is a schematic structural view of a connecting ring according to some embodiments of the present invention;

[0026] Figure 10 is a partial cross-sectional view of a connecting ring according to some embodiments of the present invention;

[0027] Figure 11 is a schematic structural view of a third ring body according to some embodiments of the present invention;

[0028] Figure 12 is a schematic structural view of a fourth ring body according to some embodiments of the present invention;

[0029] Figure 13 is a schematic structural view of a liquid passing ring according to some embodiments of the present invention;

[0030] Figure 14 is a partial cross-sectional view of a liquid passing ring according to some embodiments of the present invention;

[0031] Figure 15 is a schematic structural view of a first ring body according to some embodiments of the present invention.

[0032] Reference numerals:

[0033] Multi-channel end-face sealing device 100, first liquid-passing component 110, second liquid-passing component 120,

[0034] Bearing housing 10,

[0035] Spindle 20, installation section 21, second radial limiting groove 211, sealing groove 212, threaded section 22,

[0036] Liquid-passing ring 30, first ring body 31, first radial limiting groove 311, first liquid-passing flow channel 312, annular groove 313, second ring body 32, liquid-passing hole 321,

[0037] Connecting ring 50, ring body 51, installation hole 511, second axial limiting groove 512, connecting hole 513, convex ring 52, mating surface 521,

[0038] Liquid-passing ring 60, third ring body 61, communication groove 611, second liquid-passing flow channel 612, fourth ring body 62, first axial limiting groove 621, liquid-passing hole 622,

[0039] First elastic member 71, second elastic member 72, axial limiting pin 73, radial limiting pin 74, fastener 75, limiting member 76, first sealing ring 77, second sealing ring 78. Specific embodiments

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship 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 thus should not be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The following refers to Figures 1 - 15 Describe the multi-channel end-face sealing device 100 according to an embodiment of the present invention.

[0044] As Figures 1 - 15 shown, the multi-channel end-face sealing device 100 according to an embodiment of the present invention includes: a bearing housing 10, a first liquid-passing assembly 110, a second liquid-passing assembly 120, and an elastic assembly. The main shaft 20 and the bearing housing 10 can be rotatably connected. The first liquid-passing assembly 110 can be sleeved on the main shaft 20, and the first liquid-passing assembly 110 can be connected to the main shaft 20 so that the main shaft 20 can drive the first liquid-passing assembly 110 to rotate, that is, the first liquid-passing assembly 110 can rotate together with the main shaft 20. The second liquid-passing assembly 120 can be sleeved on the main shaft 20, and the second liquid-passing assembly 120 and the bearing housing 10 can be connected, that is, the second liquid-passing assembly 120 can be fixed on the bearing housing 10 so that the main shaft 20 and the first liquid-passing assembly 110 can rotate relative to the second liquid-passing assembly 120 together.

[0045] The first liquid-passing assembly 110 can have a plurality of first liquid-passing channels 312, the second liquid-passing assembly 120 can have a plurality of second liquid-passing channels 612, and the second liquid-passing assembly 120 can be located between the first liquid-passing assembly 110 and the bearing housing 10, facilitating the connection of the plurality of second liquid-passing channels 612 and the plurality of first liquid-passing channels 312 to form a plurality of medium channels, and a medium (such as filtrate) can flow in the medium channels.

[0046] Wherein, each second liquid-passing channel 612 can communicate with at least one first liquid-passing channel 312 to form a medium channel. For example, each second liquid-passing channel 612 can communicate with one first liquid-passing channel 312 to form a medium channel, or each second liquid-passing channel 612 can communicate with a plurality of first liquid-passing channels 312 to form a medium channel.

[0047] The main shaft 20 can drive the first liquid passing component 110 to rotate relative to the second liquid passing component 120, so as to drive the first liquid passing flow channel 312 to rotate relative to the second liquid passing flow channel 612, enabling each second liquid passing flow channel 612 to be respectively communicated with different first liquid passing flow channels 312 to form a medium flow channel. For example, the second liquid passing flow channel 612 can be communicated with different first liquid passing flow channels 312 to form the same medium flow channel, and the first liquid passing flow channel 312 can be communicated with different second liquid passing flow channels 612 during rotation, enabling the first liquid passing flow channel 312 to switch between different medium flow channels, facilitating the simultaneous realization of the respective functions of different medium flow channels, and ensuring the normal operation of the functions of multiple medium flow channels.

[0048] The elastic component can include a first elastic member 71 and a second elastic member 72. The first elastic member 71 and the second elastic member 72 can be arranged at intervals along the radial direction of the main shaft 20 (such as Figure 4 the inner and outer directions shown). The first elastic member 71 can drive the second liquid passing component 120 to press against the first liquid passing component 110 in a compressed state, reducing the gap at the connection between the first liquid passing flow channel 312 and the second liquid passing flow channel 612, and reducing the leakage amount of the filtrate.

[0049] Moreover, the second elastic member 72 can press against the first liquid passing component 110 in a compressed state, preventing the filtrate leaking through the above gap from continuing to leak outwards. That is, the first elastic member 71 and the second elastic member 72 cooperate to achieve double sealing of multiple medium flow channels in the radial direction of the main shaft 20, improving the sealing effect of multiple medium flow channels, and enhancing the safety and reliability of the medium flow channels.

[0050] For the multi-channel end face sealing device 100 according to the embodiment of the present invention, by providing an elastic component, the elastic component can drive the second liquid passing component 120 to press against the first liquid passing component 110, and the elastic component can directly press against the first liquid passing component 110, enabling the elastic component to perform double sealing on the connection between the first liquid passing flow channel 312 and the second liquid passing flow channel 612 in the radial direction of the main shaft 20, improving the sealing effect of multiple medium flow channels, reducing the leakage amount of the filtrate, and enhancing the safety and reliability of the medium flow channels.

[0051] Such as Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 and Figure 8As shown, according to some embodiments of the present invention, the second liquid-passing assembly 120 may include a connecting ring 50 and a liquid-passing ring 60. The connecting ring 50 may be sleeved on the main shaft 20, and the connecting ring 50 may be connected to the bearing seat 10, so as to fix the connecting ring 50 and prevent the connecting ring 50 and the main shaft 20 from rotating together. The liquid-passing ring 60 may be connected to the connecting ring 50, and the liquid-passing ring 60 may be located on a side of the connecting ring 50 close to the first liquid-passing assembly 110 (such as Figure 6 front side shown).

[0052] The connecting ring 50 may have a plurality of mounting holes 511, each of which may be arranged along the axial direction of the main shaft 20 (eg Figure 6 Each mounting hole 511 is provided with a first elastic member 71, and the first elastic member 71 may be a spring, and both ends of the spring (such as Figure 8 The front and rear ends shown in the figure can contact the liquid flow ring 60 and the bearing seat 10 respectively, and when the spring is installed to the mounting hole 511, the spring can be in a compressed state, so that the spring can drive the second liquid flow assembly 120 to press against the first liquid flow assembly 110, which can reduce the gap at the connection between the first liquid flow channel 312 and the second liquid flow channel 612, and reduce the leakage of the filtrate.

[0053] A plurality of mounting holes 511 can be arranged at intervals along the circumference of the main shaft 20, so that a plurality of first elastic members 71 can be arranged at intervals along the circumference of the main shaft 20, so that the force on the liquid flow ring 60 can be uniform, and thus the force on the first liquid flow assembly 110 can be uniform, and the gap at the connection between the first liquid flow channel 312 and the second liquid flow channel 612 can be prevented from increasing due to the displacement of the first liquid flow assembly 110 and the second liquid flow assembly 120 when they are squeezed against each other, and the connection effect between the first liquid flow channel 312 and the second liquid flow channel 612 can be ensured, and the sealing effect of the connection between the first liquid flow channel 312 and the second liquid flow channel 612 can be improved, and the leakage of the filtrate can be reduced.

[0054] The liquid passing ring 60 may define a plurality of second liquid passing channels 612, and the plurality of second liquid passing channels 612 may be arranged at intervals along the circumference of the main shaft 20, and each second liquid passing channel 612 may be arranged along the radial direction of the main shaft 20 (eg Figure 4 Alternatively, each second liquid passage 612 may extend in the axial direction of the main shaft 20 (eg, Figure 4 Alternatively, a portion of each second liquid flow channel 612 may extend radially along the main shaft 20, and another portion of each second liquid flow channel 612 may extend axially along the main shaft 20, thereby guiding the filtrate.

[0055] like Figure 8 and Figure 10As shown, in some embodiments, the second liquid-passing assembly 120 may further include a plurality of fasteners 75, and the connecting ring 50 may have a plurality of connecting holes 513, each of which may be arranged along the axial direction of the main shaft 20 (eg, Figure 10 The connecting ring 50 and the bearing seat 10 are connected to each other in a certain direction (as shown in the front-to-back direction), and each connecting hole 513 may correspond to a fastener 75, and the fastener 75 may fix the connecting ring 50 to the bearing seat 10 through the connecting hole 513. For example, the fastener 75 may be a bolt, and the connecting hole 513 may have an internal thread. The fastener 75 may be inserted into the connecting hole 513, and the fastener 75 may be threadedly connected to the connecting ring 50 and the bearing seat 10 respectively, which may improve the connection effect between the connecting ring 50 and the bearing seat 10 and facilitate disassembly and assembly.

[0056] A plurality of connecting holes 513 can be arranged at intervals along the circumference of the main shaft 20, so that a plurality of fasteners 75 can be arranged at intervals along the circumference of the main shaft 20, so that the connecting ring 50 can be evenly stressed, the fixing effect of the connecting ring 50 can be improved, the connecting ring 50 and the bearing seat 10 can be prevented from being separated from each other, and the gap at the connection point between the first liquid flow channel 312 and the second liquid flow channel 612 can be prevented from increasing due to the displacement of the connecting ring 50, the connecting effect between the first liquid flow channel 312 and the second liquid flow channel 612 can be ensured, and the sealing effect of the connection point between the first liquid flow channel 312 and the second liquid flow channel 612 can be improved.

[0057] like Figure 8 , Figure 9 and Figure 12 As shown, in some embodiments, the second liquid passing assembly 120 may further include a plurality of axial stop pins 73, and a side of the liquid passing ring 60 close to the connecting ring 50 (such as Figure 8 The rear side shown in FIG. 1 may have a plurality of first axial limiting grooves 621, and the side of the connecting ring 50 close to the liquid passing ring 60 (such as Figure 9 The front side as shown in the figure can have a plurality of second axial limit grooves 512, and the plurality of second axial limit grooves 512 and the plurality of first axial limit grooves 621 can correspond one to one, and the axial limit pins 73 can be respectively plugged into and matched with the first axial limit grooves 621 and the second axial limit grooves 512, so as to limit the liquid ring 60 and prevent the liquid ring 60 and the main shaft 20 from rotating together.

[0058] A plurality of first axial limit grooves 621 are arranged at intervals along the circumference of the main shaft 20, so that a plurality of axial limit pins 73 can be arranged at intervals along the circumference of the main shaft 20, so that the force on the liquid ring 60 can be uniform, the limiting effect on the liquid ring 60 can be improved, and the gap at the connection between the first liquid flow channel 312 and the second liquid flow channel 612 can be prevented from increasing due to the offset of the connecting ring 50, the connection effect between the first liquid flow channel 312 and the second liquid flow channel 612 can be ensured, and the sealing effect of the connection between the first liquid flow channel 312 and the second liquid flow channel 612 can be improved, thereby reducing the leakage of filtrate.

[0059] like Figure 7 , Figure 9 and Figure 10 As shown, in some embodiments, the connecting ring 50 may include a ring body 51 and a convex ring 52. The ring body 51 may be sleeved on the main shaft 20, and the ring body 51 may be connected to the bearing seat 10, that is, the ring body 51 may be fixed to the bearing seat 10 by a fastener 75, and the convex ring 52 may be arranged on one side of the ring body 51 close to the first liquid passing component 110 (such as Figure 10 The front side shown in the figure), and the convex ring 52 can be connected to the ring body 51, the convex ring 52 and the main shaft 20 can be arranged at intervals, and the convex ring 52 can extend along the circumference of the main shaft 20 to enclose an installation space between the convex ring 52 and the main shaft 20 for installing the second elastic member 72, and the liquid ring 60 can be sleeved on the convex ring 52, and the liquid ring 60 can be fixed on the connecting ring 50.

[0060] The second elastic member 72 can be disposed in the installation space between the protruding ring 52 and the main shaft 20, and the second elastic member 72 can be connected to the protruding ring 52 (such as welding), or the second elastic member 72 can be connected to the ring body 51, or the second elastic member 72 can be connected to the protruding ring 52 and the ring body 51 respectively, and the second elastic member 72 can be a bellows, and the bellows can be sleeved on the main shaft 20, and one end of the bellows (such as Figure 10 The front end of the bellows (as shown) can be in contact with the first liquid-passing assembly 110, and when the bellows is installed in the installation space, the bellows can be in a compressed state, so that the bellows can press against the first liquid-passing assembly 110, thereby isolating the connection between the main shaft 20 and the first liquid-passing channel 312 and the second liquid-passing channel 612, and preventing the filtrate from leaking along the main shaft 20 to the bearing seat 10, thereby preventing the filtrate leaking through the above-mentioned gap from continuing to leak outward, and improving the sealing effect on the medium flow channel.

[0061] like Figure 7 , Figure 8 and Figure 9 As shown, in some embodiments, the wall surface of the outer periphery of the protruding ring 52 is axially (eg, Figure 9At least a part in the front-rear direction (as shown) can be a mating surface 521. In the axial direction of the main shaft 20, the mating surface 521 is an arc surface convex in the middle. The wall surface of the inner circumference of the liquid passing ring 60 is closely attached to the mating surface 521, that is, the inner circumference of the liquid passing ring 60 and the outer spherical surface of the convex ring 52 are in spherical surface fit, which can perform angle compensation on the liquid passing ring 60. Thus, when the liquid passing ring 60 and the first liquid passing assembly 110 have an angular yaw due to uneven force, it can be ensured that the liquid passing ring 60 and the first liquid passing assembly 110 are closely attached under the drive of the first elastic member 71, the communication effect between the first liquid passing channel 312 and the second liquid passing channel 612 can be ensured, and the sealing effect at the communication part of the first liquid passing channel 312 and the second liquid passing channel 612 can be improved.

[0062] As Figure 7 and Figure 11 shown, in some embodiments, one side of the liquid passing ring 60 facing the first liquid passing assembly 110 (such as Figure 7 the front side shown) can have a plurality of communication grooves 611. The plurality of communication grooves 611 can be arranged at intervals in the circumferential direction of the main shaft 20, and each communication groove 611 can extend in the circumferential direction of the main shaft 20. The second liquid passing channels 612 and the communication grooves 611 can correspond one by one, and each second liquid passing channel 612 and at least one first liquid passing channel 312 can be communicated through the communication groove 611, which is convenient for the second liquid passing channel 612 to be connected to different first liquid passing channels 312 when the first liquid passing assembly 110 rotates to form different medium channels. Moreover, the connection part of the second liquid passing channel 612 and the first liquid passing channel 312 is located at the bottom wall of the communication groove 611, which can realize the isolation of a plurality of medium channels, so that different medium channels can simultaneously realize their respective functions.

[0063] It can be understood that the lengths of different communication grooves 611 in the circumferential direction of the main shaft 20 can be different, so that different second liquid passing channels 612 can be respectively communicated with different numbers of first liquid passing channels 312, that is, when the first liquid passing channel 312 switches between different medium channels, the communication time of the first liquid passing channel 312 with the second liquid passing channel 612 in different medium channels can be different. Thus, targeted design can be carried out on the communication grooves 611 of a plurality of medium channels with different functions, so that a plurality of second liquid passing channels 612 can be respectively matched with different numbers of first liquid passing channels 312, which is beneficial to different medium channels to fully realize their respective functions.

[0064] As Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 11As shown, according to some embodiments of the present invention, the liquid passing ring 60 may include a third ring body 61 and a fourth ring body 62. The mating surface 521 between the inner peripheral wall surface of the third ring body 61 and the convex ring 52 may be closely attached. And the third ring body 61 may have a second liquid passing channel 612. The communication groove 611 is located on the side of the third ring body 61 facing the first liquid passing component 110 (such as Figure 11 the front side shown). The fourth ring body 62 may be sleeved on the third ring body 61, and the fourth ring body 62 may be connected to the third ring body 61 (such as by hot inlay connection).

[0065] The first circumferential limiting groove may be located on the fourth ring body 62, and the fourth ring body 62 may have a plurality of liquid passing holes 622. The plurality of liquid passing holes 622 may be arranged at intervals along the circumferential direction of the main shaft 20, and a part of each liquid passing hole 622 may extend along the radial direction of the main shaft 20 (such as Figure 4 the inner and outer directions shown). Each liquid passing hole 622 may be communicated with a first liquid passing channel 312, which can realize the guiding of the filtrate and ensure the normal operation of the functions of a plurality of medium channels.

[0066] Such as Figure 4 and Figure 8 shown, in some embodiments, there may be a plurality of first elastic members 71, and the plurality of first elastic members 71 may drive the third ring body 61 to press against the first liquid passing component 110. On the basis of realizing the sealing of the above-mentioned connection, it can automatically compensate for the wear or axial displacement of the end face of the third ring body 61 caused by long-term operation, and can improve the service life of the first liquid passing component 110. It should be noted that the plurality of first elastic members 71 can generate an axial force in the compressed state, and the end face specific pressure is 0.2 Mpa to 1.6 Mpa, which can ensure the sealing effect of the medium channel and reduce the leakage amount of the filtrate.

[0067] The second elastic member 72 may be located inside the circumferences of the plurality of first elastic members 71. On the basis of realizing the sealing of the above-mentioned connection at the inner side in the radial direction of the main shaft 20 (such as Figure 4 the inner side shown), the size of the second elastic member 72 in the radial direction of the main shaft 20 can be reduced, so that the end face specific pressure of the second elastic member 72 can be less than the end face specific pressure of the third ring body 61. And since the pressure of the filtrate leaking through the above-mentioned gap becomes lower when it leaks to the second elastic member 72, on the basis of ensuring the reduction of the leakage amount of the filtrate, the service life of the second elastic member 72 can be improved. It should be noted that the second elastic member 72 can generate an axial force in the compressed state, and the end face specific pressure is 0.2 Mpa - 1.2 Mpa, which can ensure the sealing effect of the medium channel and can improve the service life of the second elastic member 72.

[0068] Such as Figure 4 、 Figure 5 、Figure 13 , Figure 14 and Figure 15 As shown in ,

[0069] , in some embodiments, the first liquid passing component 110 may include a liquid passing ring 30 and a radial limiting pin 74. The liquid passing ring 30 may include a first ring body 31 and a second ring body 32. The first ring body 31 may be sleeved on the main shaft 20, the second ring body 32 may be sleeved on the first ring body 31, and the second ring body 32 may be connected to the first ring body 31 (such as by hot inlay connection).

[0069] The inner peripheral wall of the first ring body 31 may have a plurality of first radial limiting grooves 311. The plurality of first radial limiting grooves 311 may be arranged at intervals along the circumferential direction of the main shaft 30. The outer peripheral wall of the main shaft 20 may have a plurality of second radial limiting grooves 211. The plurality of second radial limiting grooves 211 and the plurality of first radial limiting grooves 311 may correspond one by one, and the radial limiting pin 74 may be inserted and matched with the first radial limiting grooves 311 and the second radial limiting grooves 211 respectively, so as to realize the limitation of the liquid passing ring 30, so that the rotation of the main shaft 20 can drive the liquid passing ring 30 to rotate together.

[0070] A plurality of first liquid passing channels 312 may be defined in the first ring body 31. The plurality of first liquid passing channels 312 may be arranged at intervals along the circumferential direction of the main shaft 20, and each first liquid passing channel 312 may extend along the radial direction of the main shaft 20 (such as the inner and outer direction shown in Figure 14 ), or each first liquid passing channel 312 may extend along the axial direction of the main shaft 20 (such as the front and back direction shown in Figure 14 ), or a part of each first liquid passing channel 312 may extend along the radial direction of the main shaft 20, and another part of each first liquid passing channel 312 may extend along the axial direction of the main shaft 20, so as to realize the guiding of the filtrate. Figure 14 As shown in Figure 14 As shown, or a part of each first liquid passing channel 312 may extend along the radial direction of the main shaft 20, and another part of each first liquid passing channel 312 may extend along the axial direction of the main shaft 20, so as to realize the guiding of the filtrate.

[0071] One side of the first ring body 31 facing the liquid passing ring 60 (such as the rear side shown in Figure 15 ) may have an annular groove 313. In the radial direction of the main shaft 20 (such as the inner and outer direction shown in Figure 15 ), the first elastic member 71 may drive the liquid passing ring 60 to press against the outer part of the first ring body 31 located in the annular groove 313, and the second elastic member 72 may press against the inner part of the first ring body 31 located in the annular groove 313, which can extend the leakage path of the filtrate, improve the sealing effect of the medium flow channel, reduce the leakage amount of the filtrate, and improve the safety and reliability of the medium flow channel. Figure 15 As shown in Figure 15 As shown, the first elastic member 71 may drive the liquid passing ring 60 to press against the outer part of the first ring body 31 located in the annular groove 313, and the second elastic member 72 may press against the inner part of the first ring body 31 located in the annular groove 313, which can extend the leakage path of the filtrate, improve the sealing effect of the medium flow channel, reduce the leakage amount of the filtrate, and improve the safety and reliability of the medium flow channel.

[0072] A plurality of liquid passing holes 321 may be defined in the first ring body 31. The plurality of liquid passing holes 321 may be arranged at intervals along the circumferential direction of the main shaft 20, and a part of each liquid passing hole 321 may extend along the radial direction of the main shaft 20 (such as Figure 14extends in the inner and outer directions as shown, and each liquid through hole 321 can communicate with a first liquid flow channel 312, which can guide the filtrate and ensure the normal operation of the functions of multiple medium channels.

[0073] As Figure 4 and Figure 5 shown, in some embodiments, the main shaft 20 can have a mounting section 21, the first ring body 31 can be sleeved on the mounting section 21, and the first ring body 31 can be connected to the mounting section 21. The second radial limiting groove 211 can be located on the mounting section 21. Along the axial direction of the main shaft 20 and in the direction close to the bearing seat 10 (such as Figure 5 shown in the front-to-back direction), the radial dimension (such as Figure 5 shown in the inner and outer directions) of the mounting section 21 gradually increases, and the inner peripheral wall surface of the first ring body 31 and the outer wall surface of the mounting section 21 are closely attached, which can increase the contact area between the liquid through ring 30 and the main shaft 20, and can realize the limiting of the liquid through ring 30, prevent the liquid through ring 30 from axially moving along the main shaft 20 during rotation, and improve the safety and reliability of the medium channel.

[0074] The inner peripheral wall of the first ring body 31 can have a plurality of first radial limiting grooves 311, and the plurality of first radial limiting grooves 311 can be arranged at intervals along the circumferential direction of the main shaft 30. The outer peripheral wall of the mounting section 21 can have a plurality of second radial limiting grooves 211, and the plurality of second radial limiting grooves 211 and the plurality of first radial limiting grooves 311 can correspond one by one, and the radial limiting pins 74 can be respectively inserted and matched with the first radial limiting grooves 311 and the second radial limiting grooves 211, which can realize the limiting of the liquid through ring 30, so that the rotation of the main shaft 20 can drive the liquid through ring 30 to rotate together.

[0075] As Figure 2 and Figure 5 shown, in some embodiments, the main shaft 20 can have a threaded section 22, the threaded section 22 can be located at the end of the main shaft 20 (such as Figure 5 shown in the front end), and the threaded section 22 can be connected to the mounting section 21. The first liquid passing assembly 110 can further include a limiting member 76, the limiting member 76 can be fixed on the threaded section 22, and the limiting member 76 can contact one side of the liquid through ring 30 (such as Figure 2 shown in the front end), which can realize the limiting of the liquid through ring 30. For example, the limiting member 76 can be a nut, the threaded section 22 can have an external thread, the limiting member 76 can be threadedly connected to the threaded section 22, and the limiting member 76 can cooperate with the mounting section 21 of the main shaft 20, which can improve the limiting effect on the liquid through ring 30, prevent the liquid through ring 30 from axially moving (such as Figure 5 shown in the front-back direction) along the main shaft 20 during rotation, and improve the safety and reliability of the medium channel.

[0076] As Figure 4 , Figure 5 and Figure 8 shown, in some embodiments, a sealing groove 212 may be connected between the threaded section 22 and the mounting section 21. The sealing groove 212 may be filled with graphite braided packing to form a first sealing ring 77. The inner circumference of the first ring body 31 may be in close fit with the first sealing ring 77. A second sealing ring 78 may be provided on the inner circumference of the connecting ring 50. The second sealing ring 78 may be in close fit with the outer circumference of the main shaft 20. The second sealing ring 78 may be an inner-packing skeleton with a secondary lip, and the second sealing ring 78 and the first sealing ring 77 may cooperate to prevent the filtrate from leaking along the main shaft 20, and prevent the filtrate leaking through the above-mentioned gap from leaking outwards continuously, thereby improving the sealing effect of the medium flow channel, reducing the leakage amount of the filtrate, and improving the safety and reliability of the medium flow channel.

[0077] In some embodiments, the second ring body 32, the fourth ring body 62 and the ring body 51 may be made of stainless steel, which can ensure their structural strength and reduce costs. The first ring body 31 may be made of nickel-based hard alloy (YN8) material, and the second elastic member 72 may be made of nickel-based superalloy (Inconel 718) material, which can improve its corrosion resistance. The remaining components may all be made of the above-mentioned corrosion-resistant and wear-resistant metals, so that the medium flow channel can operate stably for a long time in the actual corrosion environment, and the service life of the medium flow channel can be improved; and in the above-mentioned hot inlay connection, the diameter interference amount is 0.3mm, so that the two components connected by hot inlay (such as the first ring body 31 and the second ring body 32, the third ring body 61 and the fourth ring body 62) can be in close fit, preventing the filtrate from leaking along the main shaft 20 and improving the sealing effect of the medium flow channel.

[0078] In the present application, the multi-channel end-face sealing device 100 may be applied to a filter. A first liquid passing channel 312 may communicate with a second liquid passing channel 612 to form a medium flow channel, and the above-mentioned medium flow channel may generate negative pressure, so that the medium (such as filtrate) can flow through the above-mentioned medium flow channel, which is beneficial to realizing the storage of the filtrate. At the same time, the filter residue will remain in the first liquid passing channel 312, and the filter residue is likely to accumulate to form filter blocks.

[0079] Furthermore, the first liquid passing component 110 can rotate relative to the second liquid passing component 120 so that the first liquid passing channel 312 with filter blocks accumulated therein communicates with another second liquid passing channel 612 to form another medium channel, and a positive pressure can be generated in the above-mentioned medium channel to blow out the filter residue in the above-mentioned medium channel through the first liquid passing channel 312 and loosen the filter blocks in the first liquid passing channel 312, facilitating the removal of the filter blocks. That is, different medium channels can have different functions (such as filtering function, washing function, regeneration function, purging function, etc.).

[0080] Taking one first liquid passing channel 312 as an example, when the first liquid passing component 110 rotates, this first liquid passing channel 312 can switch between medium channels with different functions. The medium channel with a filtering function can generate a negative pressure to suck in the filtrate. The medium channel with a washing function can generate a negative pressure to wash out the residual filtrate in the filter blocks. The medium channel with a regeneration function can generate a negative pressure to dry out the residual filtrate in the filter blocks. The medium channel with a purging function can generate a positive pressure to blow out the filter residue and loosen the filter blocks, facilitating the removal of the filter blocks, which is beneficial for the medium channel with a filtering function to continuously suck in the filtrate.

[0081] Other components and operations of the multi-channel end face sealing device 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here. In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0082] In the description of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-channel end face sealing device, characterized in that: include: Bearing seat; A main shaft, wherein the main shaft and the bearing seat are rotatably connected; A first liquid-passing component, wherein the first liquid-passing component is sleeved on the main shaft and connected to the main shaft, and the first liquid-passing component has a plurality of first liquid-passing flow channels; a second liquid-passing assembly, the second liquid-passing assembly being sleeved on the main shaft and located between the first liquid-passing assembly and the bearing seat, the second liquid-passing assembly being connected to the bearing seat, the second liquid-passing assembly having a plurality of second liquid-passing channels, each of the second liquid-passing channels being adapted to communicate with at least one of the first liquid-passing channels; An elastic component, the elastic component includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are arranged at intervals along the radial direction of the main axis, the first elastic member is configured to be suitable for driving the second liquid-transmitting component to press against the first liquid-transmitting component in a compressed state, and the second elastic member is configured to be suitable for pressing against the first liquid-transmitting component in a compressed state.

2. The multi-channel end face sealing device according to claim 1, characterized in that: The second liquid-passing component comprises: A connecting ring, the connecting ring is sleeved on the main shaft and connected to the bearing seat, the connecting ring has a plurality of mounting holes, the plurality of mounting holes are arranged at intervals along the circumference of the main shaft, each of the mounting holes extends along the axial direction of the main shaft, and each of the mounting holes is installed with a first elastic member; A liquid flow ring is connected to the connecting ring and is located on a side of the connecting ring close to the first liquid flow component. A plurality of second liquid flow channels are defined in the liquid flow ring. The plurality of second liquid flow channels are arranged at intervals along the circumference of the main shaft, and each of the second liquid flow channels extends in the radial direction of the main shaft and / or the axial direction of the main shaft.

3. The multi-channel end face sealing device according to claim 2, characterized in that: The second liquid-passing component also includes: a plurality of fasteners, the connecting ring has a plurality of connecting holes, the plurality of connecting holes are arranged at intervals along the circumference of the main shaft, each of the connecting holes extends along the axial direction of the main shaft, and each of the connecting holes corresponds to a fastener, and the fastener is suitable for fixing the connecting ring on the bearing seat through the connecting hole.

4. The multi-channel end face sealing device according to claim 2, characterized in that: The second liquid-passing assembly also includes: a plurality of axial limit pins, a plurality of first axial limit grooves are provided on a side of the liquid-passing ring close to the connecting ring, the plurality of first axial limit grooves are arranged at intervals along the circumference of the main shaft, a plurality of second axial limit grooves are provided on a side of the connecting ring close to the liquid-passing ring, and the plurality of second axial limit grooves correspond to the plurality of first axial limit grooves one by one, and the axial limit pins are respectively plugged into and fitted with the first axial limit grooves and the second axial limit grooves.

5. The multi-channel end face sealing device according to claim 2, characterized in that: The connecting ring comprises: A ring body, the ring body is sleeved on the main shaft and connected to the bearing seat; A convex ring, wherein the convex ring is arranged on a side of the ring body close to the first liquid-transmitting component and is connected to the ring body, the convex ring and the main shaft are arranged at intervals and extend along the circumferential direction of the main shaft, the second elastic member is arranged between the convex ring and the main shaft, and the second elastic member is connected to the convex ring and / or the ring body, and the liquid-transmitting ring is sleeved on the convex ring.

6. The multi-channel end face sealing device according to claim 5, characterized in that: At least a portion of the wall surface of the outer periphery of the convex ring in the axial direction of the main shaft is a matching surface, and in the axial direction of the main shaft, the matching surface is an arc surface with a raised middle portion, and the wall surface of the inner periphery of the liquid passing ring is tightly fitted with the matching surface.

7. The multi-channel end face sealing device according to claim 2, characterized in that: The liquid flow ring has a plurality of connecting grooves on one side facing the first liquid flow assembly, the plurality of connecting grooves are arranged at intervals along the circumference of the main shaft, and each connecting groove extends along the circumference of the main shaft, one second liquid flow channel and at least one first liquid flow channel are connected through the connecting groove, and the connection point between the second liquid flow channel and the first liquid flow channel is located at the bottom wall of the connecting groove.

8. The multi-channel end face sealing device according to claim 2, characterized in that: The first liquid-passing component comprises: A first ring body, the first ring body is sleeved on the main shaft, a plurality of the first liquid flow channels are defined in the first ring body, the plurality of the first liquid flow channels are arranged at intervals along the circumference of the main shaft, and each of the first liquid flow channels extends along the radial direction of the main shaft and / or the axial direction of the main shaft, the first ring body has an annular groove on one side facing the liquid flow ring, in the radial direction of the main shaft, the first elastic member is suitable for driving the liquid flow ring to press against the outer portion of the first ring body located at the annular groove, and the second elastic member is suitable for pressing against the inner portion of the first ring body located at the annular groove; The second ring body is sleeved on the first ring body and connected to the first ring body, a plurality of liquid holes are defined in the first ring body, the plurality of liquid holes are arranged at intervals along the circumference of the main axis, and a portion of each of the liquid holes extends along the radial direction of the main axis, and each of the liquid holes is connected to one of the first liquid flow channels.

9. The multi-channel end face sealing device according to claim 8, characterized in that: The main shaft has a mounting section, the first ring body is sleeved on the mounting section and connected to the mounting section, along the axial direction of the main shaft and in the direction close to the bearing seat, the radial dimension of the mounting section gradually increases, and the inner circumferential wall surface of the first ring body and the outer wall surface of the mounting section are tightly fitted.

10. The multi-channel end face sealing device according to claim 9, characterized in that: The first liquid passing component also includes: a plurality of radial limit pins, the inner circumferential wall of the first ring body has a plurality of first radial limit grooves, the plurality of first radial limit grooves are arranged at intervals along the circumference of the main shaft, the outer circumferential wall of the mounting section has a plurality of second radial limit grooves, and the plurality of second radial limit grooves correspond to the plurality of first radial limit grooves one by one, and the radial limit pins are respectively plugged into and matched with the first radial limit grooves and the second radial limit grooves.

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