Groove type filler

Abstract

The utility model discloses a groove type filler which comprises a filler body, the filler body is a circular ring formed by connecting two ends of a plate body, the connecting position of the two ends of the plate body is a connector position of the filler body, a plurality of grooves are formed in an inner ring and an outer ring of the filler body, and the connector position of the filler body is arranged to be a special-shaped joint surface. An inner ring and an outer ring of a groove type packing body are all provided with grooves, and the rebound resilience of the packing body can be improved. Under the action of the same axial pressing force, compression deformation is larger, then larger radial expansion is generated, the gap between the packing body and the rotating shaft and the gap between the packing body and the inner wall of the packing box are effectively filled, and then the sealing performance is enhanced. Under the condition that the rotating shaft is eccentric, the compensation capacity of the filler body is improved through large radial expansion, and the possibility of leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial sealing packing, in particular to a groove type packing. Background Art

[0002] In equipment using a rotating shaft, such as a fan, a stirrer, a centrifugal pump, and a valve, axial sealing of the equipment requires the use of packing. The packing is installed between the stuffing box and the rotating shaft. By squeezing the packing with a gland, axial compression is generated, and then radial expansion is generated. The gaps between the packing and the rotating shaft and between the packing and the inner wall of the stuffing box are thus filled to achieve sealing.

[0003] The existing packing is formed by connecting the two ends of a plate body into a ring. The connection between the two ends of the plate body is the interface of the packing body. The interfaces are ramp type and dovetail groove type interfaces. The existing packing has a low resilience rate, a small radial force, and poor sealing performance. The ramp type and dovetail groove type interfaces result in a small effective sealing area of the interface and a high risk of medium leakage. Summary of the Utility Model

[0004] To solve the technical problems in the background art, the utility model proposes a groove type packing.

[0005] A groove type packing proposed by the utility model includes a packing body. The packing body is formed by connecting the two ends of a plate body into a ring. The connection between the two ends of the plate body is the interface of the packing body. A plurality of grooves are provided on both the inner circle and the outer circle of the packing body. The interface of the packing body is provided with a special-shaped joint surface, and the special-shaped joint surface is used to increase the sealing area of the interface.

[0006] Preferably, lubricant can be filled in the grooves to achieve self-lubrication.

[0007] Preferably, the interface of the packing body is provided with a "W" type joint surface.

[0008] Preferably, the interface of the packing body is provided with a wavy joint surface.

[0009] In the utility model, the proposed groove type packing has the following beneficial technical effects:

[0010] 1. The inner circle and the outer circle of the groove type packing body are both covered with grooves, which is beneficial to improving the resilience of the packing body. Under the action of the same axial pressing force, the compression deformation is larger, and then a larger radial expansion is generated. The gaps between the packing body and the rotating shaft and between the packing body and the inner wall of the stuffing box are effectively filled, thereby enhancing the sealing performance; in the case of eccentricity of the rotating shaft, the larger radial expansion improves the compensation ability of the packing body and reduces the possibility of leakage.

[0011] 2. The groove can be filled with lubricant, endowing the packing body with self-lubricating performance. During rotation, the rotating shaft will rub against the inner wall of the packing body, while the lubricant reduces the friction coefficient, decreases wear, protects the inner wall of the packing body, and extends the service life of the packing body.

[0012] 3. Compared with the traditional ramp type and dovetail groove type interfaces, the special-shaped joint surface is provided, and the "W" type joint surface is used at the interface, effectively increasing the sealing area of the interface, extending the leakage path of the medium, and reducing the risk of medium leakage at the interface.

[0013] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the structure of the present utility model;

[0015] Figure 2 is a front view of the structure of the present utility model.

[0016] In the figure, 1 is the packing body; 2 is the groove; 3 is the special-shaped joint surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which 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 by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0018] As Figure 1 - Figure 2 shown, a groove type packing includes a packing body 1. The packing body 1 is formed by connecting the two ends of a plate body into a ring. The connection part where the two ends of the plate body are connected is the interface of the packing body 1. A plurality of grooves 2 are provided on both the inner and outer circles of the packing body 1. The interface of the packing body 1 is provided with a special-shaped joint surface 3, and the special-shaped joint surface 3 is used to increase the sealing area of the interface.

[0019] Both the inner and outer circles of the groove type packing body 1 are covered with grooves 2, which is beneficial to improving the resilience of the packing body 1. Under the same axial pressing force, the compression deformation is larger, and thus a larger radial expansion is generated. The gaps between the packing body 1 and the rotating shaft and between the packing body 1 and the inner wall of the stuffing box are effectively filled, thereby enhancing the sealing performance; in the case of eccentricity of the rotating shaft, the larger radial expansion improves the compensation ability of the packing body 1 and reduces the possibility of leakage.

[0020] The groove 2 amplifies the "labyrinth effect". Once the medium leaks, it will first fill the groove 2. Under the action of the "labyrinth effect" of the groove 2, the occurrence of medium leakage is avoided or delayed.

[0021] A further improvement of the technical solution lies in that the groove 2 can be filled with lubricant to achieve self-lubrication.

[0022] The groove 2 can be filled with lubricant, enabling the packing body 1 to have self-lubricating performance. During rotation, the rotating shaft will rub against the inner wall of the packing body 1, while the lubricant reduces the friction coefficient, reduces wear, protects the inner wall of the packing body 1, and extends the service life of the packing body 1.

[0023] A further improvement of the technical solution lies in that the interface of the packing body 1 is set as a "W"-shaped joint surface.

[0024] Compared with the traditional ramp-type and dovetail groove-type interfaces, with the setting of the special-shaped joint surface 3 and the use of a "W"-shaped joint surface at the interface, the sealing area of the interface is effectively increased, the leakage path of the medium is extended, and the risk of medium leakage at the interface is reduced.

[0025] A further improvement of the technical solution lies in that the interface of the packing body 1 is set as a wavy joint surface.

[0026] Compared with the traditional ramp-type and dovetail groove-type interfaces, with the setting of the special-shaped joint surface 3 and the use of a wavy joint surface at the interface, the sealing area of the interface is effectively increased, the leakage path of the medium is extended, and the risk of medium leakage at the interface is reduced.

[0027] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0028] It should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings, and is 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 to the present invention.

[0029] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A grooved packing, comprising a packing body (1), characterized in that, A plurality of grooves (2) are provided in both the inner ring and the outer ring of the packing body (1), and the interface of the packing body (1) is provided with a special-shaped joint surface (3), and the special-shaped joint surface (3) is used to increase the sealing area of the interface.

2. The grooved packing according to claim 1, wherein Lubricant can be filled in the groove (2).

3. The grooved packing according to claim 1, characterized in that, The interface of the packing body (1) is provided with a "W"-shaped joint surface.

4. The grooved packing according to claim 1, characterized in that, The interface of the packing body (1) is provided with a wavy joint surface.

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