Sealing device and conveying device

Abstract

The utility model relates to a sealing device and a conveying device, the sealing device comprises a sealing piece and a reinforcing piece, the sealing piece comprises a sealing part provided with a penetrating part, and the reinforcing piece is connected to the sealing part and used for providing extrusion force towards the penetrating part for the sealing part; the sealing piece further comprises a first connecting arm, a second connecting arm and a supporting arm which define a mounting cavity, the first connecting arm and the second connecting arm are both connected with the sealing part, the reinforcing piece is arranged in the mounting cavity, and the supporting arm is located on the side, away from the sealing part, of the reinforcing piece. The conveying device comprises a first cover body, a second cover body and a sealing device, and the sealing device is installed between the first cover body and the second cover body. The reinforcing piece provides extrusion force towards the penetrating part for the sealing part, so that the sealing performance of the sealing part is improved; due to the fact that the supporting arm is located on the side, away from the sealing part, of the reinforcing part, the supporting arm provides supporting to maintain the stability of the sealing part structure and indirectly provides supporting force for the penetrating part, and the sealing performance of the sealing part is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, in particular to a sealing device and conveying device. BACKGROUND

[0002] In recent years, for cardiovascular disease adopts the treatment mode of interventional treatment to become the important means of curing patient, the mode of interventional treatment usually uses conveying device to establish the passage and conveys medical instrument to the biological lesion site and carries out minimally invasive treatment.

[0003] The process that conveying device conveys medical instrument to the inside of organism, the body fluid of organism can enter to the conveying device from the distal end of conveying device, the sealing ring for preventing liquid leakage is included in conveying device, the passage can be formed in the middle of sealing ring, and then other catheter is convenient for passing through the through hole.

[0004] In order to improve the plugging performance of sealing ring, the diameter of through hole in sealing ring is relatively small to the diameter of catheter passing through, however, smaller through hole size will lead to the need of great pushing force for catheter passing, which causes great inconvenience for doctor operation.

[0005] Therefore, at present, it is urgent to provide a sealing device with good sealing performance, so as to improve the sealing without reducing the size of through hole. SUMMARY

[0006] A sealing device, comprising a sealing member and a reinforcing member, the sealing member comprises a sealing part with a passing part, the reinforcing member is connected to the sealing part for providing extrusion force to the sealing part towards the passing part.

[0007] The sealing member further comprises a first connecting arm, a second connecting arm and a supporting arm enclosing an installation cavity, the first connecting arm and the second connecting arm are connected to the sealing part, the reinforcing member is arranged in the installation cavity, and the supporting arm is located on the side of the reinforcing member away from the sealing part.

[0008] In one embodiment, the sealing member is a hollow structure to form the installation cavity, and the volume of the installation cavity is greater than the reinforcing member.

[0009] In one embodiment, the sealing part and the reinforcing member are at least partially elastic, the reinforcing member is sleeved on the outside of the sealing part, and the resilience of the reinforcing member is better than that of the sealing part.

[0010] In one embodiment, the passing part is a cut that is closed after removing the installed part; or the passing part is a through hole that remains through after removing the installed part.

[0011] In one of the embodiments, at least two of the support arm, the first connecting arm and the second connecting arm are an integral structure.

[0012] In one of the embodiments, the reinforcing member and the sealing member are an integral structure.

[0013] In one of the embodiments, the sealing member is a body of revolution around a central axis, the penetrating portion extends along the length direction of the central axis, and a first interface portion and a second interface portion are respectively arranged on both sides along the length direction of the central axis, the first interface portion is arranged to abut against a first limiting surface of the first connecting arm, and the second interface portion is arranged to abut against a second limiting surface of the second connecting arm.

[0014] In one of the embodiments, the support arm and the first connecting arm are separable structures.

[0015] The first connecting arm has a first extension arm protruding towards the support arm, and the support arm has a first stepped fitting portion cooperating with the first extension arm and the first connecting arm.

[0016] The first stepped fitting portion has a first protruding portion supported on the first connecting arm.

[0017] In one of the embodiments, the support arm and the second connecting arm are separable structures.

[0018] The second connecting arm has a second extension arm protruding towards the support arm, and the support arm has a second stepped fitting portion cooperating with the second extension arm and the second connecting arm.

[0019] The second stepped fitting portion has a second protruding portion supported on the second connecting arm.

[0020] A conveying device includes a first cover, a second cover and a sealing device, and the sealing device is mounted between the first cover and the second cover.

[0021] Advantages: the reinforcing member provides extrusion force to the sealing portion towards the penetrating portion, thereby improving the sealing performance of the sealing portion; the support arm is located on the side of the reinforcing member away from the sealing portion, and the support arm provides support to maintain the stability of the sealing member structure and indirectly provides support force to the penetrating portion, thereby improving the sealing performance of the sealing portion. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural schematic diagram of a sealing device in one embodiment of the present application;

[0023] Figure 2 A structural schematic diagram of a sealing member in one embodiment of the present application;

[0024] Figure 3 Structure diagram of a sealing member in another embodiment of the present application;

[0025] Figure 4 Structure diagram of a second step matching part in one embodiment of the present application;

[0026] Figure 5 、 Figure 6 and Figure 7 Structure diagram of a sealing member in three embodiments of the present application, respectively;

[0027] Figure 8 Structure diagram of a conveying device in one embodiment of the present application.

[0028] Reference signs: 100, sealing device; 110, sealing member; 111, sealing part; 1111, penetrating part; 112, mounting cavity; 113, first connecting arm; 1131, first guide surface; 11311, large-diameter part; 11312, small-diameter part; 1132, first extension arm; 114, second connecting arm; 1141, second guide surface; 1142, second extension arm; 115, support arm; 1151, first step matching part; 11511, first protruding part; 1152, second step matching part; 11512, second protruding part; 11521, first step surface; 11522, second step surface; 11523, third step surface; 116, first interface part; 1161, first limiting surface; 1162, first edge; 117, second interface part; 1171, second limiting surface; 1172, second edge; 120, reinforcing member; 200, conveying device; 210, first cover body; 220, second cover body. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0030] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] The term "distal end" as used herein refers to the end of an element that is far away from an operator in the length direction of the element when the element is operated by the operator, and the term "proximal end" refers to the end of the element that is close to the operator in the length direction of the element. When an element is not operated by an operator, the "distal end" and the "proximal end" can be understood as distinguishing different parts of the element. That is, the "distal end" and the "proximal end" are only for the purpose of illustration to make it easier for the reader to understand the description of the element, and do not limit the structure of the element.

[0032] Figure 1 FIG. 1 is a schematic view of a sealing device 100 according to an embodiment of the present application. The sealing device 100 includes a sealing member 110 having a cylindrical outer surface, so as to be installed in a cylindrical passage and play a sealing role. When it is required to seal passages of other shapes, the outer surface of the sealing member 110 can also be designed according to the shape of the passage.

[0033] The sealing member 110 is provided with a sealing portion 111 having a penetrating portion 1111 for penetrating other components, such as a catheter. After the catheter is inserted into the penetrating portion 1111, the outer wall of the catheter is in close contact with the penetrating portion 1111 of the sealing member 110, and the sealing property of the sealing member 110 makes the outer wall of the catheter tightly contact with the penetrating portion 1111, thereby improving the sealing property of the outer wall of the catheter. The part of the sealing portion 111 for contacting the outer wall of the catheter is elastic, which can apply an elastic extrusion force to the outer wall of the catheter, so that the outer wall of the catheter has good sealing property with the penetrating portion 1111.

[0034] In an embodiment, the sealing device 100 further includes a reinforcing member 120 for improving the sealing property of the sealing portion 111 to the components, such as the catheter, inserted into the penetrating portion 1111. As shown in FIG. 2, the reinforcing member 120 is connected to the sealing portion 111 and is used to provide an extrusion force of the sealing portion 111 towards the penetrating portion 1111. The reinforcing member 120 is made of an elastic material, which provides an elastic extrusion force to the sealing portion 111. When the components are inserted into the penetrating portion 1111, the penetrating portion 1111 is expanded in the radial direction, so that the size of the sealing portion 111 is increased in the radial direction. The reinforcing member 120 connected to the sealing portion 111 is expanded with the expansion of the sealing portion 111, the elastic potential energy of the reinforcing member 120 is increased, the elastic extrusion force of the reinforcing member 120 to the sealing portion 111 is increased, and further the extrusion force of the sealing portion 111 to the outer wall of the components inserted into the penetrating portion 1111 is increased, thereby improving the sealing property of the sealing portion 111 in contact with the outer wall of the components. Figure 1 In an embodiment, the sealing member 110 is formed with a mounting cavity 112, and the reinforcing member 120 is located in the mounting cavity 112. Referring to FIG. 3, the reinforcing member 120 is connected to the sealing portion 111 and is used to provide an extrusion force of the sealing portion 111 towards the penetrating portion 1111. The reinforcing member 120 is made of an elastic material, which provides an elastic extrusion force to the sealing portion 111. When the components are inserted into the penetrating portion 1111, the penetrating portion 1111 is expanded in the radial direction, so that the size of the sealing portion 111 is increased in the radial direction. The reinforcing member 120 connected to the sealing portion 111 is expanded with the expansion of the sealing portion 111, the elastic potential energy of the reinforcing member 120 is increased, the elastic extrusion force of the reinforcing member 120 to the sealing portion 111 is increased, and further the extrusion force of the sealing portion 111 to the outer wall of the components inserted into the penetrating portion 1111 is increased, thereby improving the sealing property of the sealing portion 111 in contact with the outer wall of the components.

[0035] Figure 1 ​The sealing member 110 includes a first connecting arm 113, a second connecting arm 114, and a supporting arm 115, and the mounting cavity 112 is enclosed by the first connecting arm 113, the second connecting arm 114, and the supporting arm 115. The first connecting arm 113 and the second connecting arm 114 are connected to the sealing part 111, and the supporting arm 115 is located on the side of the reinforcing member 120 away from the sealing part 111. The supporting arm 115 is used to provide support to maintain the stability and structure of the sealing member 110. At the same time, the supporting arm 115 indirectly provides support to the passing part 1111, thereby improving the sealing between the passing part 1111 and the outer wall of the component. When the component is inserted into the passing part 1111, the passing part 1111 will expand radially, and the sealing part 111, the first connecting arm 113, and the second connecting arm 114 will all be elastically deformed, and the shape of the mounting cavity 112 will also change. By connecting the first connecting arm 113 and the second connecting arm 114 through the supporting arm 115, the degree of elastic deformation of the first connecting arm 113 and the second connecting arm 114 is constrained, and the stability of the shape of the sealing member 110 is maintained. In addition, the constraint force of the supporting arm 115 on the first connecting arm 113 and the second connecting arm 114 is transmitted to the passing part 1111 of the sealing part 111 and acts on the outer wall of the component, thereby improving the sealing of the sealing part 111 to the outer wall of the component.

[0036] In one embodiment, the first connecting arm 113 is annular, and the passing part 1111 is arranged therein. In one embodiment, the second connecting arm 114 is annular, and the passing part 1111 is arranged therein. The volume of the mounting cavity 112 is larger than that of the reinforcing member 120, thereby providing a space for elastic deformation. In the prior art, the sealing member 110 is usually a solid structure, and the radial deformation resistance is relatively strong. If the diameter of the middle part of the sealing ring is smaller than the outer diameter of the pipe passing therethrough, it will be difficult to insert the pipe, and a large pushing force will be required. In the present embodiment, the sealing member 110 is hollow to form the above-mentioned mounting cavity 112, which reduces the deformation resistance and radial resilience of the first connecting arm 113 or the second connecting arm 114, reduces the resistance of the pipe passing through the passing part 1111, and improves the smoothness of the pipe passing through.

[0037] In some embodiments, the mounting cavity 112 can have various shapes, such as a circular ring, an elliptical ring, etc.

[0038] In one embodiment, the reinforcing member 120 is located in the mounting cavity 112, and the reinforcing member 120 is in contact with the inner side wall surface of the mounting cavity 112 in the radial direction, i.e., the reinforcing member 120 is in contact with the sealing part 111, which is used to provide a compression force to the sealing part 111 in the direction of the passing part 1111, thereby improving the sealing of the passing part 1111.

[0039] In some embodiments, at least part of at least one of the first connecting arm 113 and the second connecting arm 114 is elastic. The first connecting arm 113 and the second connecting arm 114 can be elastically deformed, and the elastic force generated by the elastic deformation is transmitted to the sealing part 111 and the outer wall of the component, so that the sealing part 111 and the outer wall of the component are in close contact, and the sealing performance is improved.

[0040] In one embodiment, at least part of the support arm 115 is elastic. When the support arm 115 is compressed, the elastic potential energy increases, thereby providing an elastic pushing force to the first connecting arm 113 and the second connecting arm 114 at both ends. Not only can the stability of the connection relationship and shape of the support arm 115, the first connecting arm 113 and the second connecting arm 114 be maintained, but also an extrusion force can be provided to the sealing part 111, so that the sealing part 111 and the outer wall of the component are in close contact, and the sealing performance is improved.

[0041] In one embodiment, the reinforcing member 120 is annular and is sleeved on the outer periphery of the sealing part 111 in the assembled state. However, in the natural state where the components are not assembled and are not subjected to external force, the inner diameter of the reinforcing member 120 is smaller than the outer diameter of the sealing part 111, so that the reinforcing member 120 exerts a pre-tightening force on the sealing part 111 in the assembled state, thereby improving the sealing performance of the sealing part 111.

[0042] In one embodiment, the reinforcing member 120 is annular and is sleeved on the outer periphery of the sealing part 111 in the assembled state. The support arm 115 is annular and is sleeved on the outer periphery of the reinforcing member 120 in the assembled state. However, in the natural state where the components are not assembled and are not subjected to external force, the outer diameter of the reinforcing member 120 can be smaller than or equal to the inner diameter of the support arm 115. In the case where the outer diameter of the reinforcing member 120 is equal to the inner diameter of the support arm 115, the reinforcing member 120 exerts a larger radial compression force on the sealing part 111 in the assembled state, so that the sealing performance of the sealing part 111 is better. In the case where the outer diameter of the reinforcing member 120 is smaller than the inner diameter of the support arm 115, the reinforcing member 120 has a stronger deformation ability in the assembled state, and the catheter insertion process through the insertion part 1111 is smoother. In the embodiment where the mounting cavity 112 is enclosed by the first connecting arm 113, the second connecting arm 114 and the support arm 115, the outer diameter of the mounting cavity 112 is the inner diameter of the support arm 115.

[0043] In one embodiment, the reinforcing member 120 is annular and is sleeved on the outer periphery of the sealing part 111 in the assembled state. The support arm 115 is annular and is sleeved on the outer periphery of the reinforcing member 120 in the assembled state. In the assembled state, the outer diameter of the reinforcing member 120 can be fitted to the inner wall of the support arm 115, or can be spaced from the inner wall of the support arm 115.

[0044] In one embodiment, the sealing portion 111 and the reinforcing member 120 are respectively at least partially elastic, and the reinforcing member 120 is sleeved on the sealing portion 111. The resilience of the reinforcing member 120 is superior to that of the sealing portion 111, so that the reinforcing member 120 can provide greater resilience to the sealing portion 111 in the case that the radially inner side of the reinforcing member 120 is subjected to an expansion force. Thus, when the catheter is inserted into the insertion portion 1111, the sealing portion 111 can provide smaller resilience to the compression inwards in the case that the compression of the catheter to the sealing portion 111 does not reach the expansion of the outer diameter of the sealing portion 111 in the radial direction, so as to facilitate the insertion of the catheter.

[0045] In some embodiments, at least one of the first connecting arm 113, the second connecting arm 114, the sealing portion 111 and the supporting arm 115 comprises a part made of an elastic material. The elastic material can be rubber, silicone, silicone rubber, polyethylene terephthalate (PET), nylon, polyurethane, etc. For example, the material of the reinforcing member 120 is rubber, specifically, butadiene rubber O-ring, and the material of the first connecting arm 113, the second connecting arm 114 and / or the sealing portion 111 is silicone with a Shore hardness of 20-60.

[0046] In some embodiments, the supporting arm 115 is made of a biocompatible polymer material, such as PC (polycarbonate), polypropylene, polytetrafluoroethylene, polyvinyl chloride, polyethylene, polystyrene, polyether ether ketone, etc.

[0047] In some embodiments, the material of the reinforcing member 120 can be adjusted according to the required radial sealing strength. The cross-sectional shape of the reinforcing member 120 can be a circular ring, or a rectangular shape, etc. The number of the reinforcing member 120 can also be multiple, such as multiple elastic members in the shape of a circle, a strip, etc.

[0048] In one embodiment, the first connecting arm 113 is connected to the sealing portion 111 at one end and radially extends outwardly with the sealing portion 111 as the center to form an inclined first guide surface 1131, and the inclined first guide surface 1131 encloses a space with a certain taper. The sealing portion 111 with the insertion portion 1111 is arranged at the small-diameter part 11312 of the space with a certain taper. When other components are inserted from the large-diameter part 11311 of the space with a certain taper and enter the insertion portion 1111 through the small-diameter part 11312, the first guide surface 1131 with a certain taper has a guiding effect on the components.

[0049] In one embodiment, one end of the second connecting arm 114 is connected to the sealing part 111, and the other end extends radially outward from the sealing part 111 to form an inclined second guide surface 1141. The inclined second guide surface 1141 encloses a space with a certain taper. The sealing part 111, which has a through-hole 1111, is disposed at the small-diameter opening 11312 of the space with a certain taper. When other components are inserted from the large-diameter opening 11311 of the space with a certain taper and pass through the small-diameter opening 11312 into the through-hole 1111, the second guide surface 1141 with a certain taper guides the components.

[0050] In one embodiment, the first connecting arm 113 and the second connecting arm 114 are integrally formed into an arc shape that curves radially outward, making the inner wall of the mounting cavity 112 arc-shaped. The entire mounting cavity 112 is annular, and the minimum diameter of the mounting cavity 112 is located at the connection between the first connecting arm 113 and the second connecting arm 114, or at the sealing portion 111. The reinforcing member 120 is provided at the minimum diameter by adhesive bonding. The reinforcing member 120 abuts against the inner wall of the mounting cavity 112 radially inward, and extends radially from the inner wall of the mounting cavity 112 to the sealing portion 111.

[0051] In one embodiment, the reinforcing member 120 may be integral with the first connecting arm 113, the second connecting arm 114, and / or the sealing part 111, or may be a separate component. For example, when the reinforcing member 120 is integral with the first connecting arm 113, the second connecting arm 114, and / or the sealing part 111, they may be connected together by means of bonding or other methods, or they may be integrally formed.

[0052] like Figure 1 As shown, in one embodiment, the first connecting arm 113, the second connecting arm 114, and the support arm 115 are an integral structure.

[0053] In other embodiments, the support arm 115 is separable from the first connecting arm 113 and / or the second connecting arm 114.

[0054] Figure 2 This is a schematic diagram of the structure of a seal 110 according to an embodiment of this application. Figure 2 As shown, the support arm 115 and the first connecting arm 113 are separable. This structure makes the seal 110 easy to process and assemble.

[0055] In one embodiment, such as Figure 2As shown, the first connecting arm 113 has a first extension arm 1132 bent toward the support arm 115, and the support arm 115 has a first stepped engagement portion 1151 that mates with the first extension arm 1132 and the first connecting arm 113. One end of the first connecting arm 113 is connected to the sealing portion 111, and from that end, it gradually extends along an arc shape at approximately 90°, and then continues to bend at 90° to form the first extension arm 1132 protruding toward the support arm 115. Correspondingly, the portion of the support wall used to connect with the first extension arm 1132 forms the first stepped engagement portion 1151. This connection method between the first extension arm 1132 and the first stepped engagement portion 1151 makes the structure of the seal 110 more stable. In particular, the first stepped engagement portion 1151 has a first protrusion 11511 supported by the first connecting arm 113. The first connecting arm 113 and the first protrusion 11511 interlock to form a stable connection structure.

[0056] In one embodiment, the first protrusion 11511 is located on the inner side of the first extension arm 1132 along the radial direction of the seal 110. This structure has a certain locking effect and helps to maintain the stability of the shape of the mounting cavity 112.

[0057] Figure 3 This is a schematic diagram of the structure of the seal 110 in one embodiment of this application. Figure 2 The illustrated embodiments are similar; see also [link to relevant documentation]. Figure 3 The support arm 115 and the second connecting arm 114 are separable. This structure makes the seal 110 easy to process and assemble.

[0058] In one embodiment, such as Figure 3 As shown, the second connecting arm 114 has a second extension arm 1142 protruding toward the support arm 115, and the support arm 115 has a second stepped mating portion 1152 that mates with the first extension arm 1132 and the first connecting arm 113. One end of the second connecting arm 114 is connected to the sealing portion 111, and from this end, it gradually extends along an arc shape at approximately 90°, and then continues to bend at 90° to form the second extension arm 1142 protruding toward the support arm 115. Correspondingly, the portion of the support wall used to connect with the second extension arm 1142 forms the second stepped mating portion 1152. This connection method between the second extension arm 1142 and the second stepped mating portion 1152 makes the structure of the seal 110 more stable. In particular, the second stepped mating portion 1152 has a second protrusion 11512 supported on the second connecting arm 114. The second connecting arm 114 and the second protrusion 11512 interlock to form a stable connection structure.

[0059] In one embodiment, the second protrusion 11512 is located on the outer side of the second extension arm 1142 along the radial direction of the seal 110.

[0060] Figure 4 For a structural schematic diagram of the second stepped fitting part 1152 in an embodiment of the present application, the second stepped fitting part 1152 comprises a first stepped surface 11521, a second stepped surface 11522 and a third stepped surface 11523 connected in sequence, wherein there is a certain height difference between the first stepped surface 11521 and the third stepped surface 11523. The first stepped surface 11521 is recessed relative to the third stepped surface 11523, and the recessed part corresponds to the protruding second extension arm 1142.

[0061] The structure of the first stepped fitting part 1151 is similar to that of the second stepped fitting part 1152. The recessed part of the first stepped fitting part 1151 corresponds to the protruding first extension arm 1132.

[0062] Figure 5 For a structural schematic diagram of the seal 110 in an embodiment of the present application, the support arm 115, the first connecting arm 113 and the second connecting arm 114 are all separate components. The cross section of the support arm 115 is T-shaped, so that one end of the support arm 115 protrudes to form a first stepped fitting part 1151 with a first protruding part 11511, and the other end protrudes to form a second stepped fitting part 1152 with a second protruding part 11512. In an embodiment, the first protruding part 11511 is located on the radially inner side of the first extension arm 1132 along the seal 110, and the second protruding part 11512 is also located on the radially inner side of the second extension arm 1142 along the seal 110. Such a structure has a certain locking effect, which helps to maintain the stability of the shape of the installation cavity 112.

[0063] Figure 6 For a structural schematic diagram of the seal 110 in an embodiment of the present application, the seal 110 is a rotary body around the central axis L, the through part 1111 extends along the length direction of the central axis L, the first interface part 116 and the second interface part 117 are arranged on both sides of the length direction of the central axis L, respectively, the first interface part 116 is provided with a first limiting surface 11711161 for abutting against the first connecting arm 113, and the second interface part 117 is provided with a second limiting surface 1171 for abutting against the second connecting arm 114. The side wall of the outer periphery of the first interface part 116 is a protruding first rim 1162, thereby facilitating connection with other components and enhancing the stability of the side wall of the outer periphery of the first interface part 116 and the overall structure of the seal 110. The side wall of the outer periphery of the second interface part 117 is a protruding second rim 1172, thereby facilitating connection with other components and enhancing the stability of the side wall of the outer periphery of the second interface part 117 and the overall structure of the seal 110.

[0064] In one embodiment, to improve the sealing of the connection between the first interface portion 116 and other components, the first edge 1162 and other components can be connected by means of bonding or the like. In one embodiment, to improve the sealing of the connection between the second interface portion 116 and other components, the second edge 1172 and other components can also be connected by means of bonding or the like.

[0065] In one embodiment, such as Figure 6 As shown, the through-hole 1111 remains open even after the component installed therein is removed. This structure can be used to install components as conduits within the through-hole for extended periods.

[0066] Figure 7 This is a schematic diagram of the structure of the seal 110 in one embodiment of this application. The through-hole 1111 is a cut that closes after the component installed therein is removed. This structure can be applied in the case that the component can be a conduit, which can be temporarily inserted into the through-hole 1111, and the through-hole 1111 can close in time after the conduit is pulled out.

[0067] In some embodiments, the through portion 1111 can have various shapes, such as U-shaped or V-shaped.

[0068] Figure 8 This is a schematic diagram of the conveying device 200 in one embodiment of this application. The conveying device 200 includes a first cover 210, a second cover 220, and a sealing device 100. The first cover 210 and the second cover 220 have a communicating channel. A sealing member 110 is installed in the channel, with the through-hole portion 1111 corresponding to the channel. After installation, the outer wall of the sealing member 110 of the sealing device 100 adheres to the inner wall of the channel. The force of the inner wall of the channel abutting against the sealing member 110 is transmitted to the reinforcing member 120 and finally to the sealing portion 111, thereby providing radial compressive force. When the through-hole portion 1111 of the sealing portion 111 is inserted into the conduit, this radial compressive force makes the sealing portion 111 fit tightly against the outer periphery of the conduit, enhancing the sealing performance.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A sealing device, characterized in that The sealing device comprises a sealing part provided with a through part, and a reinforcing part connected to the sealing part for providing extrusion force to the sealing part towards the through part; The sealing device further comprises a first connecting arm, a second connecting arm and a supporting arm, which enclose a mounting cavity, the first connecting arm and the second connecting arm are both connected to the sealing part, the reinforcing part is arranged in the mounting cavity, and the supporting arm is located on the side of the reinforcing part away from the sealing part.

2. The sealing device of claim 1, wherein The sealing device is a hollow structure to form the mounting cavity, and the volume of the mounting cavity is greater than the reinforcing part.

3. The sealing device of claim 1, wherein The sealing part and the reinforcing part are both at least partially elastic, the reinforcing part is sleeved outside the sealing part, and the resilience of the reinforcing part is better than that of the sealing part.

4. The sealing device of claim 1, wherein The through part is a cut that is closed after the removal of a component installed therein; or the through part is a through hole that remains through after the removal of a component installed therein.

5. The sealed device of claim 1, wherein, At least two of the supporting arm, the first connecting arm and the second connecting arm are an integral structure.

6. The sealed device of claim 1, wherein, The reinforcing part and the sealing part are an integral structure.

7. The sealed device of claim 1, wherein, The sealing device is a rotary body around a central axis, the through part extends along the length direction of the central axis, first and second interface parts are arranged on both sides along the length direction of the central axis respectively, the first interface part is arranged for abutting against a first limiting surface of the first connecting arm, and the second interface part is arranged for abutting against a second limiting surface of the second connecting arm.

8. The sealed device of claim 1, wherein, The supporting arm and the first connecting arm are separable structures; The first connecting arm has a first extension arm protruding towards the supporting arm, and the supporting arm has a first stepped fitting part cooperating with the first extension arm and the first connecting arm. The first stepped fitting part has a first protruding part supported on the first connecting arm.

9. The sealed device of claim 1, wherein, The supporting arm and the second connecting arm are separable structures; The second connecting arm has a second extension arm protruding towards the supporting arm, and the supporting arm has a second stepped fitting part cooperating with the second extension arm and the second connecting arm. The second stepped fitting part has a second protruding part supported on the second connecting arm.

10. A delivery device characterized by, The sealing device is arranged between the first cover and the second cover.

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