Sealing gland and sealing structure

Abstract

The utility model provides a sealing gland and a sealing structure, and relates to the technical field of sealing. The sealing gland comprises a body, a through hole penetrating through the two ends is formed in the body, and the side, close to the outer surface of the body, of the end face of one end of the body protrudes relative to the side close to the through hole. The sealing structure comprises a flange, a packing and a sealing gland, and a containing space is formed in the flange; the packing is embedded in the accommodating space; at least one part of one end, provided with an end face, of the body of the sealing gland is embedded in the containing space, and the end face abuts against the packing. The problems that in the prior art, when a packing is abraded, gaps are generated, and sealing failure is caused, the packing can only be replaced frequently, the use and utilization rate of the packing is low, and a large amount of manpower and material resources need to be consumed when the packing is frequently shut down for maintenance and replacement are solved.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to a sealing gland and a sealing structure. Background Art

[0002] In the process of glass batching, a screw feeder is usually used. A packing is arranged on the screw shaft sleeve in the screw feeder, and a cooperative sealing structure is formed by a flange, a gland and the packing, which is sleeved on the screw shaft.

[0003] During the operation of the screw feeder, the inner side of the packing sleeved on the screw shaft will be continuously rubbed during the rotation of the screw shaft, resulting in wear on the inner side of the packing. As a result, a gap is formed between the inner side of the packing and the outer surface of the screw shaft, and the material will continuously leak out from the gap. As the wear amount of the packing gradually increases, the gap gradually widens, leading to sealing failure. In the prior art, when the packing wears and the gap causes sealing failure, it can only be solved by frequently replacing the packing. The utilization rate of the packing is relatively low, and frequent shutdowns for maintenance and replacement require a large amount of manpower and material resources.

[0004] Therefore, the above problems need to be solved urgently. Summary of the Utility Model

[0005] The purpose of the embodiments of the present utility model is to provide a sealing gland and a sealing structure, which solve the problems in the prior art that when the packing wears and the gap causes sealing failure, it can only be solved by frequently replacing the packing, the utilization rate of the packing is relatively low, and frequent shutdowns for maintenance and replacement require a large amount of manpower and material resources.

[0006] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the present application provides a sealing gland, including:

[0008] A body, the body is provided with a through hole penetrating both ends, and one end face of the body is convex on the side closer to the outer surface of the body than the side closer to the through hole.

[0009] In some embodiments, for the aforementioned sealing gland, the end face is a plane, one side of the plane is connected to the outer edge of the through hole, the other side of the plane is connected to the outer surface of the body, and the plane forms a first preset angle with the axis of the through hole, and the first preset angle is an acute angle.

[0010] In some embodiments, for the aforementioned sealing gland, the first preset angle is 45° to 80°.

[0011] In some embodiments, for the aforementioned sealing gland, the first preset angle is 60°.

[0012] In some embodiments, on the end face of the aforementioned sealing gland, a number of first protrusions are further provided. The first end of the first protrusion is connected to the end face, and the second end of the first protrusion extends obliquely towards the axis of the through hole and is indented on the side closer to the outer surface of the body than the end face.

[0013] In some embodiments, on the aforementioned sealing gland, on the side of the end face closer to the outer surface of the body, a second protrusion is provided. The second protrusion protrudes on the side closer to the through hole than the end face. The end of the second protrusion away from the end face is a slope, and the slope forms a second preset angle with the axis of the through hole. The second preset angle is an acute angle.

[0014] In some embodiments, for the aforementioned sealing gland, the through hole is stepped. The through hole includes a first sub-through hole and a second sub-through hole that are communicated. The diameter of the first sub-through hole is larger than that of the second sub-through hole.

[0015] In some embodiments, for the aforementioned sealing gland, the body includes a gland ring and a gland cylinder. The gland ring is sleeved on the gland cylinder. The through hole is opened in the gland cylinder. The end face is located at one end of the gland cylinder. A threaded hole is opened on the gland ring.

[0016] In some embodiments, for the aforementioned sealing gland, the outer contour of the gland ring is surrounded by a first straight edge, a first arc edge, a second straight edge, and a second arc edge. The two ends of the first arc edge are respectively connected to the first end of the first straight edge and the first end of the second straight edge. The two ends of the second arc edge are respectively connected to the second end of the first straight edge and the second end of the second straight edge. Two threaded holes are opened on the gland ring, and the two threaded holes are symmetrically arranged with respect to the connection line of the midpoints of the first straight edge and the second straight edge.

[0017] The second aspect of the present application provides a sealing structure, including:

[0018] A flange, which has an accommodation space inside;

[0019] A packing, which is embedded in the accommodation space;

[0020] The aforementioned sealing gland, at least a part of the end of the body of the sealing gland is embedded in the accommodation space, and the end face abuts against the packing.

[0021] Through the above technical solutions, the sealing gland and the sealing structure of the present utility model have at least the following advantages:

[0022] The sealing gland and sealing structure provided by the embodiment of the present utility model, the sealing gland includes a body, the body is provided with a through hole penetrating both ends, and one end face of the body is convex on the side closer to the outer surface of the body than on the side closer to the through hole. When the screw feeder is running, after the packing rubs against the screw shaft and causes a gap, the end face of the side of the present application that is closer to the outer surface of the body than to the side closer to the through hole can apply a thrust force obliquely towards the screw shaft direction to the packing. After the thrust force is decomposed, the radial thrust force is offset by the flange, and the axial thrust force enables the inner side of the packing to displace along the axial direction of the screw shaft, thereby compensating for the gap generated between the inner side of the packing and the outer surface of the screw shaft, prolonging the time when sealing failure occurs, further prolonging the service life of the packing before sealing failure, reducing the frequency of replacing the packing, and saving a large amount of manpower and material resources consumed by frequent shutdown maintenance and replacement. Through the application of the present utility model, it solves the problem in the prior art that when the packing wears and a gap is generated resulting in sealing failure, it can only be solved by relying on frequent replacement of the packing, the utilization rate of the packing is relatively low, and a large amount of manpower and material resources are consumed by frequent shutdown maintenance and replacement.

[0023] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the description, the following takes the preferred embodiment of the present utility model and combines the drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Schematically shows a cross-sectional structural diagram of a sealing gland provided by an embodiment of the present utility model;

[0026] Figure 2 Schematically shows another cross-sectional structural diagram of a sealing gland provided by an embodiment of the present utility model;

[0027] Figure 3 Schematically shows still another cross-sectional structural diagram of a sealing gland provided by an embodiment of the present utility model;

[0028] Figure 4 Schematically shows a cross-sectional structural diagram of a sealing gland provided by an embodiment of the present utility model;

[0029] Figure 5Schematically shown is a schematic side view structure of a sealing gland provided by an embodiment of the present utility model;

[0030] Figure 6 Schematically shown is a schematic cross-sectional view structure of a sealing structure provided by an embodiment of the present utility model.

[0031] Explanation of reference numerals:

[0032] 1. Sealing gland; 11. Body; 111. Through hole; 112. End face; 113. Gland ring; 114. Gland cylinder; 1131. Threaded hole; 1132. First straight edge; 1133. First arc edge; 1134. Second straight edge; 1135. Second arc edge; 1121. First protrusion; 1122. Second protrusion; 1123. Inclined surface; 1111. First sub-through hole; 1112. Second sub-through hole;

[0033] 2. Packing

[0034] 3. Flange; 31. Accommodating space;

[0035] R1. First preset angle; R2. Second preset angle. Detailed implementation manners

[0036] The following further describes in detail the implementation manners of the present disclosure in conjunction with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0037] These embodiments are provided by the present disclosure to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.

[0038] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0039] In addition, the "first", "second" and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" does not mean strictly vertical, but within the allowable error range. "Parallel" does not mean strictly parallel, but within the allowable error range. Terms such as "include" or "comprise" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0040] It should also be noted that in the description of this disclosure, unless otherwise clearly specified and limited, the terms "install", "connect", and "couple" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0041] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0042] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the specification.

[0043] Embodiment 1

[0044] As Figure 1 shown, a sealing gland 1 is provided in the first aspect of this application, including a body 11. The body 11 is provided with a through hole 111 penetrating both ends. One end face 112 of the body 11 protrudes closer to the side of the outer surface of the body 11 than to the side closer to the through hole 111.

[0045] Specifically, the sealing gland 1 provided in this application includes a body 11. The body 11 is provided with a through hole 111 penetrating both ends to be sleeved on the spiral shaft of a feeder. When installing the sealing gland 1, it is sleeved into the through hole 111 of the sealing gland 1 from one end of the spiral shaft.

[0046] One end face 112 of the main body 11 protrudes more towards the side close to the outer surface of the main body 11 than towards the side close to the through hole 111. It can be understood that due to the above setting, one end face 112 of the main body 11 is in an inclined state, so that an oblique thrust in the direction of the screw shaft can be applied to the packing 2. After the thrust is decomposed, the radial thrust is offset by the flange 3, and the axial thrust enables the inner side of the packing 2 to displace along the axial direction of the screw shaft, thereby compensating for the gap generated between the inner side of the packing 2 and the outer surface of the screw shaft.

[0047] The end face 112 can be an integral inclined plane or a protrusion with a local inclined plane, as long as it is in an inclined state at the contact position with the packing 2, or the side close to the outer surface of the main body 11 protrudes more than the side close to the through hole 111. In addition, in order to increase the contact area of the oblique thrust in the direction of the screw shaft applied to the packing 2, some convex structures can also be provided on the surface of the end face 112.

[0048] The sealing gland 1 and the sealing structure provided by the embodiment of the present utility model, the sealing gland 1 includes a main body 11, the main body 11 is provided with a through hole 111 penetrating through both ends, and one end face 112 of the main body 11 protrudes more towards the side close to the outer surface of the main body 11 than towards the side close to the through hole 111. During the operation of the screw feeder, when a gap is generated due to the friction between the packing 2 and the screw shaft, the end face 112 that protrudes more towards the side close to the outer surface of the main body 11 than towards the side close to the through hole 111 of the present application can apply an oblique thrust in the direction of the screw shaft to the packing 2. After the thrust is decomposed, the radial thrust is offset by the flange 3, and the axial thrust enables the inner side of the packing 2 to displace along the axial direction of the screw shaft, thereby compensating for the gap generated between the inner side of the packing 2 and the outer surface of the screw shaft, prolonging the time when sealing failure occurs, and further prolonging the service life of the packing 2 before sealing failure, reducing the frequency of replacing the packing 2, and saving a large amount of manpower and material resources consumed by frequent shutdown maintenance and replacement. Through the application of the present utility model, the problem in the prior art that when the packing 2 wears and a gap is generated resulting in sealing failure, only frequent replacement of the packing 2 can be relied on to solve, the utilization rate of the packing 2 is relatively low, and a large amount of manpower and material resources are consumed by frequent shutdown maintenance and replacement is solved.

[0049] As Figure 1 shown, in some embodiments, the end face 112 is a plane, one side of the plane is connected to the outer edge of the through hole 111, the other side of the plane is connected to the outer surface of the main body 11, and the plane forms a first preset angle R1 with the axis of the through hole 111, and the first preset angle R1 is an acute angle.

[0050] Specifically, for the convenience of processing, the end face 112 can be set as a plane, so that it is easier to produce and manufacture the end face 112 required for the sealing gland 1 of the present application. One side of the plane is connected to the outer edge of the through hole 111, and the other side of the plane is connected to the outer surface of the body 11. The plane forms a first preset angle R1 with the axis of the through hole 111, and the first preset angle R1 is an acute angle. The acute first preset angle R1 can exert a thrust on the packing 2 in the direction of the spiral axis obliquely. After the thrust is decomposed, the thrust in the radial direction is offset by the flange 3, and the thrust in the axial direction enables the inner side of the packing 2 to displace along the axial direction of the spiral axis, thereby compensating for the gap generated between the inner side of the packing 2 and the outer surface of the spiral axis.

[0051] In some embodiments, the first preset angle R1 is 45° - 80°.

[0052] Specifically, in order to achieve a better effect of pushing the packing 2 to displace, the present application further sets the first preset angle R1 to be 45° - 80° on the basis of an acute angle. When the first preset angle R1 is 45°, the inclination angle of the end face 112 is 45°, and a thrust of 45° in the direction of the spiral axis obliquely is exerted on the packing 2, and then it is decomposed axially, so that the packing 2 displaces along the axial direction of the spiral axis. When the first preset angle R1 is 80°, the inclination angle of the end face 112 is 80°, and a thrust of 10° in the direction of the spiral axis obliquely is exerted on the packing 2. At this time, the thrust is smaller than when the first preset angle R1 is 45°, and then it is decomposed axially, so that the packing 2 displaces along the axial direction of the spiral axis. When the first preset angle R1 is 70°, the inclination angle of the end face 112 is 70°, and a thrust of 20° in the direction of the spiral axis obliquely is exerted on the packing 2. At this time, the thrust is larger than when the first preset angle R1 is 80°, and then it is decomposed axially, so that the packing 2 displaces along the axial direction of the spiral axis.

[0053] In some embodiments, the first preset angle R1 is 60°.

[0054] Specifically, in order to achieve a better effect of pushing the packing 2 to displace while ensuring that the sealing gland 1 can also achieve better sealing of the packing 2 in the radial direction, the first preset angle R1 is set to be 60°. When the first preset angle R1 is 60°, the inclination angle of the end face 112 is 60°, and a thrust of 30° in the direction of the spiral axis obliquely is exerted on the packing 2. At this time, the thrust is larger than when the first preset angle R1 is 80° and smaller than when the first preset angle R1 is 45°. Then, the decomposed force of the thrust in the axial direction enables the packing 2 to displace along the axial direction of the spiral axis, and the decomposed force of the thrust in the radial direction presses on the packing 2, ensuring that the position of the packing 2 in the radial direction does not shift and ensuring the sealing effect.

[0055] Such as Figure 2As shown, in some embodiments, a plurality of first protrusions 1121 are further provided on the end face 112. The first end of the first protrusion 1121 is connected to the end face 112, and the second end of the first protrusion 1121 extends obliquely towards the axis of the through hole 111 and is indented on the side closer to the outer surface of the body 11 than the end face 112.

[0056] Specifically, in order to increase the contact area between the thrust applied in the direction of the oblique spiral axis and the packing 2, a plurality of first protrusions 1121 are further provided on the end face 112. The first end of the first protrusion 1121 is connected to the end face 112, and the second end of the first protrusion 1121 extends obliquely towards the axis of the through hole 111 and is indented on the side closer to the outer surface of the body 11 than the end face 112, so that during the radial movement of the first protrusion 1121, the side closer to the outer surface of the body 11 will not contact the packing 2 prior to the end face 112. The first protrusion 1121 can be arranged perpendicular to the end face 112, so as to apply the thrust in the same direction to the packing 2 simultaneously with the end face 112, thereby increasing the contact area between one end of the gland and the packing 2 during the displacement of the packing 2 by the sealing gland 1 of the present application and ensuring the force application effect.

[0057] As Figure 3 shown, in some embodiments, a second protrusion 1122 is provided on the side of the end face 112 closer to the outer surface of the body 11. The second protrusion 1122 protrudes from the side closer to the through hole 111 than the end face 112. The end of the second protrusion 1122 away from the end face 112 is an inclined surface 1123, and the inclined surface 1123 forms a second preset angle R2 with the axis of the through hole 111, and the second preset angle R2 is an acute angle.

[0058] Specifically, in the form of the second protrusion 1122, the body 11 of the sealing gland 1 of the present application contacts the packing 2 to apply thrust. Different from the end face 112 that is entirely flat, the second protrusion 1122 applies thrust to the packing 2 through the inclined surface 1123 at the end away from the end face 112. The second protrusion 1122 is provided on the side closer to the outer surface of the body 11 and protrudes from the side closer to the through hole 111 than the end face 112. The inclined surface 1123 forms a second preset angle R2 with the axis of the through hole 111, and the second preset angle R2 is an acute angle. And in order to achieve a better effect of pushing the packing 2 to displace, the second preset angle R2 can be set to 45° - 80°.

[0059] As Figure 4 shown, in some embodiments, the through hole 111 is in a stepped shape. The through hole 111 includes a first sub-through hole 1111 and a second sub-through hole 1112 that are communicated with each other. The diameter of the first sub-through hole 1111 is larger than that of the second sub-through hole 1112.

[0060] Specifically, in order to facilitate the installation of the sealing gland 1 provided in this application and better achieve sealing, the through hole 111 penetrating the body 11 is stepped. The through hole 111 includes a first sub-through hole 1111 and a second sub-through hole 1112 that are connected. The diameter of the first sub-through hole 1111 is larger than that of the second sub-through hole 1112. One end of the body 11 corresponding to the first sub-through hole 1111 is the installation end during actual operation, which is used for the operator to pick up and install. One end of the body 11 corresponding to the second sub-through hole 1112 with an end face 112 is the sealing end, which is used to form a sealing structure with the flange 3 and the packing 2. Therefore, the diameter of the second sub-through hole 1112 is set smaller than that of the first sub-through hole 1111 to make the sealing at the sealing end tighter.

[0061] As Figure 4 shown, in some embodiments, the body 11 includes a gland ring 113 and a gland cylinder 114. The gland ring 113 is sleeved on the gland cylinder 114. The through hole 111 is opened in the gland cylinder 114. The end face 112 is located at one end of the gland cylinder 114. Threaded holes 1131 are opened on the gland ring 113.

[0062] Specifically, the sealing gland 1 of this application is formed in the form of a gland ring 113 and a gland cylinder 114. The through hole 111 is opened in the gland cylinder 114, and the end face 112 is located at one end of the gland cylinder 114 for contacting the sealing packing 2. The gland ring 113 is sleeved on the gland cylinder 114. Threaded holes 1131 are opened on the gland ring 113 for connecting the flange 3 to achieve sealing. The gland ring 113 and the gland cylinder 114 can be integrally formed.

[0063] As Figure 5 shown, in some embodiments, the outer contour of the gland ring 113 is surrounded by a first straight edge 1132, a first arc edge 1133, a second straight edge 1134, and a second arc edge 1135. The two ends of the first arc edge 1133 are respectively connected to the first end of the first straight edge 1132 and the first end of the second straight edge 1134. The two ends of the second arc edge 1135 are respectively connected to the second end of the first straight edge 1132 and the second end of the second straight edge 1134. Two threaded holes 1131 are opened on the gland ring 113, and the two threaded holes 1131 are symmetrically arranged with respect to the connection line of the midpoints of the first straight edge 1132 and the second straight edge 1134.

[0064] Specifically, on the one hand, in order to save the cost of the gland ring 113, and on the other hand, in order to achieve the stability of the connection between the gland and the flange 3, the outer contour of the gland ring 113 of the present application is formed by a first straight edge 1132, a first arc edge 1133, a second straight edge 1134 and a second arc edge 1135. It can be understood that the gland ring 113 is formed by cutting the left and right sides of a circular cross-section, reducing the weight of the gland and facilitating installation and handling. And under this outer contour, in order to achieve a firm fit with the flange 3, only two threaded holes 1131 are provided to pass through bolts to connect with the flange 3. Moreover, for the convenience of processing and the stability of installation, the two threaded holes 1131 are symmetrically arranged with respect to the line connecting the midpoints of the first straight edge 1132 and the second straight edge 1134. It should be noted that when there are four threaded holes 1131, the installation is inconvenient. When there are three threaded holes 1131, in order to be stable, they are usually arranged at 120° on the circumference. However, for the seal of the gland, it is not convenient for installation and it is easy to cause installation deviation due to the high angle requirement, thus affecting the seal.

[0065] Embodiment 2

[0066] As Figure 6 shown, in the second aspect of the present application, a sealing structure is provided, including a flange 3, a packing 2 and the above-mentioned sealing gland 1. The flange 3 has an accommodation space 31 therein; the packing 2 is embedded in the accommodation space 31; at least a part of one end of the body 11 of the sealing gland 1 with an end face 112 is embedded in the accommodation space 31, and the end face 112 abuts against the packing 2.

[0067] Specifically, for the specific structure of the sealing gland 1, please refer to Embodiment 1, which will not be elaborated here.

[0068] Defining the seal failure when the wear amount of the packing 2 is 15%, for the sealing structure adopted in the present application, due to the setting of the sealing gland 1, the wear amount of the packing 2 can reach 20% - 25% before replacement. Under normal working conditions, the service life of the packing 2 is 3 months. For the sealing structure provided in the present application, the packing 2 can be used for 4 - 5 months. Therefore, the technical solution provided in the present application extends the time when seal failure occurs, extends the service life of the packing 2 before seal failure, can reduce the frequency of replacing the packing 2, and saves a large amount of manpower and material resources consumed by frequent shutdown maintenance and replacement.

[0069] The sealing gland 1 and the sealing structure provided by the embodiment of the present utility model, the sealing structure includes a flange 3, a packing 2 and a sealing gland 1. The flange 3 has a receiving space 31 therein; the packing 2 is embedded in the receiving space 31; at least a part of one end of the body 11 of the sealing gland 1 with an end face 112 is embedded in the receiving space 31, and the end face 112 abuts against the packing 2. The sealing gland 1 includes a body 11. The body 11 is provided with a through hole 111 penetrating through both ends. One end face 112 of the body 11 is convex on the side closer to the outer surface of the body 11 than on the side closer to the through hole 111. During the operation of the screw feeder, when a gap is generated due to the friction between the packing 2 and the screw shaft, the end face 112 of the present application that is convex on the side closer to the outer surface of the body 11 than on the side closer to the through hole 111 can apply a thrust force in the direction of the screw shaft obliquely to the packing 2. After the thrust force is decomposed, the radial thrust force is offset by the flange 3, and the axial thrust force enables the inner side of the packing 2 to displace along the axial direction of the screw shaft, thereby compensating for the gap generated between the inner side of the packing 2 and the outer surface of the screw shaft, prolonging the time when the sealing failure occurs, and further prolonging the service life of the packing 2 before the sealing failure. The sealing structure provided by the present application can reduce the frequency of replacing the packing 2 and save a large amount of manpower and material resources consumed by frequent shutdown maintenance and replacement. Through the application of the present utility model, the problem in the prior art that when the packing 2 wears and a gap is generated resulting in sealing failure, only frequent replacement of the packing 2 can be relied on to solve the problem, the utilization rate of the packing 2 is relatively low, and a large amount of manpower and material resources are consumed by frequent shutdown maintenance and replacement is solved.

[0070] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art are not described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed here based on the above description.

[0071] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.

Claims

1. A sealing gland, characterized in that, Comprising: A body (11), the body (11) is provided with a through hole (111) penetrating through both ends, and one end face (112) of the body (11) protrudes closer to the side of the outer surface of the body (11) than to the side of the through hole (111). The end face (112) is a plane, one side of the plane is connected to the outer edge of the through hole (111), the other side of the plane is connected to the outer surface of the body (11), and the plane forms a first preset angle (R1) with the axis of the through hole (111), and the first preset angle (R1) is an acute angle. A plurality of first protrusions (1121) are further provided on the end face (112), the first end of the first protrusion (1121) is connected to the end face (112), and the second end of the first protrusion (1121) extends obliquely towards the axis of the through hole (111) and is indented closer to the side of the outer surface of the body (11) than the end face (112).

2. The sealing gland according to claim 1, characterized in that The first preset angle (R1) is 45° to 80°.

3. The sealing gland according to claim 2, characterized in that The first preset angle (R1) is 60°.

4. The sealing gland according to claim 1, characterized in that A second protrusion (1122) is provided on the side of the end face (112) close to the outer surface of the body (11), the second protrusion (1122) protrudes closer to the side of the outer surface of the body (11) than to the side of the through hole (111) of the end face (112), and one end of the second protrusion (1122) away from the end face (112) is a slope (1123), and the slope (1123) forms a second preset angle (R2) with the axis of the through hole (111), and the second preset angle (R2) is an acute angle.

5. The sealing gland according to claim 1, characterized in that The through hole (111) is in a stepped shape, the through hole (111) includes a first sub-through hole (1111) and a second sub-through hole (1112) that are communicated, and the diameter of the first sub-through hole (1111) is larger than that of the second sub-through hole (1112).

6. The sealing gland according to claim 1, characterized in that The body (11) includes a gland ring (113) and a gland cylinder (114), the gland ring (113) is sleeved on the gland cylinder (114), the through hole (111) is opened in the gland cylinder (114), the end face (112) is located at one end of the gland cylinder (114), and a threaded hole (1131) is opened on the gland ring (113).

7. The sealing gland according to claim 6, characterized in that The outer contour of the gland ring (113) is formed by a first straight edge (1132), a first arc edge (1133), a second straight edge (1134) and a second arc edge (1135). Two ends of the first arc edge (1133) are respectively connected to the first end of the first straight edge (1132) and the first end of the second straight edge (1134). Two ends of the second arc edge (1135) are respectively connected to the second end of the first straight edge (1132) and the second end of the second straight edge (1134). Two threaded holes (1131) are formed in the gland ring (113), and the two threaded holes (1131) are symmetrically arranged with respect to the connection line of the midpoints of the first straight edge (1132) and the second straight edge (1134).

8. A sealing structure, characterized in that, Comprising: A flange (3), which has an accommodation space (31) therein; A packing (2), which is embedded in the accommodation space (31); The sealing gland (1) according to any one of claims 1-7, at least a part of one end of the body (11) of the sealing gland (1) with an end face (112) is embedded in the accommodation space (31), and the end face (112) abuts against the packing (2).

Images