Dynamic sealing device

Abstract

The utility model relates to the technical field of sealing parts, in particular to a dynamic sealing device which comprises a rotating body and further comprises a dynamic sealing mechanism arranged on the rotating body, the dynamic sealing mechanism comprises a supporting frame and a discharging end cover connected to the supporting frame in a sliding mode, the discharging end cover is buckled to the rotating body, and the rotating body is connected with the dynamic sealing mechanism in a sliding mode. A sealing assembly is arranged between the discharging end cover and the rotating body; the supporting frame is provided with a pressing assembly used for pressing the discharging end cover, and the pressing assembly abuts against the side, away from the rotating body, of the discharging end cover. The pressing assembly is used for pressing the sealing assembly on the rotating body through the discharging end cover, and therefore the sealing effect on the connecting position of the rotating body and the discharging end cover can be achieved. Meanwhile, the discharging end cover is in sliding connection with the supporting frame, when the sealing assembly is driven by the rotating body to be abraded to generate a gap, the pressing assembly drives the discharging end cover to slide towards the rotating body, and therefore the discharging end cover drives the sealing assembly to fill the gap to achieve sealing again.

Description

Technical Field

[0001] The present application relates to the technical field of sealing components, and in particular to a dynamic sealing device. Background Art

[0002] The rotary conveyor generally includes a frame and a rotating body rotatably connected to the frame. The rotating body is generally a rotary kiln or a screw, which is used to convey materials. When conveying materials, the pressure and shear force generated by the rotation of the rotating body are relied on to fully mix the materials and then output from the discharge port.

[0003] Since the mixed materials are generally in powder form, the rotating body needs to be sealed during operation to prevent material leakage. Conventional rotary conveying devices use rubber rings to seal between the rotating body and the discharge end. However, since the rotating body will continue to rotate, the rotating body will continue to rub against the rubber ring and cause wear. The side of the rubber ring in contact with the rotating body will soon be worn and a gap will appear. The material leaks from the gap, and the rubber ring needs to be replaced in time. When the rotating body is running under load for a long time, the sealing structure needs to be replaced frequently, which is time-consuming and labor-intensive. Utility Model Content

[0004] In order to improve the problem in the related art that the sealing structure of the rotary conveying device needs to be frequently replaced, the utility model provides a dynamic sealing device.

[0005] A dynamic sealing device includes a rotating body and a dynamic sealing mechanism arranged on the rotating body, the dynamic sealing mechanism includes a support frame and a discharge end cover slidably connected to the support frame, the discharge end cover is buckled on the rotating body, and a sealing assembly is arranged between the discharge end cover and the rotating body; the support frame is provided with a clamping assembly for clamping the discharge end cover, and the clamping assembly abuts against the side of the discharge end cover away from the rotating body.

[0006] Furthermore, the support frame is arranged on both sides of the rotating body, and the support frame is fixedly connected with a guide rail, and the axis of the guide rail is parallel to the axis of the rotating body; guide sliding seats cooperating with the guide rail are correspondingly arranged on both sides of the discharging end cover, and the guide sliding seats are slidably connected with the guide rail.

[0007] Furthermore, the guide rail is provided with a guide slide groove along its length direction, the guide slide seat includes a guide slide block, the guide slide block is slidingly connected to the guide slide groove, the guide slide block is rotatably connected to a roller, and the roller is rollingly connected to the guide rail.

[0008] Furthermore, the rotating body is fixedly connected with a fixing ring for cooperating with the sealing assembly, and the sealing assembly includes a sealing wedge block arranged on the discharge end cover, and a graphite sealing ring is arranged between the sealing wedge block and the fixing ring.

[0009] Furthermore, the diameter of the graphite sealing ring gradually decreases from an end away from the sealing wedge to an end close to the sealing wedge; the sealing wedge has an inclined groove for matching the graphite sealing ring, and the shape and size of the inclined groove are adapted to the sealing wedge.

[0010] Furthermore, the fixing ring is provided with a connecting piece for reducing friction, and the connecting piece abuts against the graphite sealing ring.

[0011] Furthermore, the clamping assembly includes support blocks respectively arranged on both sides of the rotating body, the support blocks are fixedly connected with a clamping fixing seat, the clamping fixing seat is slidably connected with a clamping rod, and the clamping rod is directed toward and abuts against the discharge end cover; a clamping spring is arranged in the clamping fixing seat, and the clamping spring applies a force toward the discharge end cover to the clamping rod.

[0012] The utility model has the following advantages:

[0013] 1. The utility model is a dynamic sealing device, which can achieve the sealing effect of the connection between the rotating body and the discharge end cover by setting a support frame, a discharge end cover, a sealing component and a pressing component, and using the pressing component to press the sealing component against the rotating body through the discharge end cover. At the same time, the discharge end cover is slidably connected to the support frame. When the sealing component is worn and a gap is formed under the drive of the rotating body, the pressing component will drive the discharge end cover to slide toward the rotating body, thereby driving the sealing component to fill the gap through the discharge end cover to re-seal, without the need to frequently replace the sealing structure.

[0014] 2. The dynamic sealing device of the utility model arranges guide rails and guide grooves on both sides of the rotating body, and arranges corresponding guide slide seats and guide slide blocks on the discharge end cover, so that the discharge end cover can move stably and accurately toward the rotating body under the guidance of the guide slide seats, so that the dynamic sealing mechanism has high matching accuracy and can operate smoothly for a long time.

[0015] 3. The dynamic sealing device of the utility model is provided with a graphite sealing ring and a sealing wedge, and the graphite sealing ring is chamfered, so that the positioning and matching installation of the graphite sealing ring and the sealing wedge are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1This is a schematic structural diagram of a dynamic sealing device according to an embodiment of the present application;

[0018] Figure 2 This is a side view of a dynamic sealing device according to an embodiment of the present application;

[0019] Figure 3 A top view of a dynamic sealing device according to an embodiment of the present application;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross section in the AA direction;

[0021] Figure 5 for Figure 3 Schematic diagram of the cross section in the BB direction;

[0022] Figure 6 for Figure 5 A partial enlarged schematic diagram of part A.

[0023] Description of reference numerals:

[0024] 1. Rotating body; 11. Fixed ring; 2. Dynamic sealing mechanism; 21. Support frame; 211. Guide rail; 2111. Guide slide groove; 22. Discharge end cover; 221. Guide slide seat; 2211. Guide slide block; 2212. Roller; 222. Connecting seat; 23. Sealing assembly; 231. Sealing wedge; 2311. Inclined groove; 232. Graphite sealing ring; 233. Connecting piece; 24. Clamping assembly; 241. Support block; 242. Clamping fixed seat; 243. Clamping rod; 244. Clamping spring. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] Reference Figure 1 and Figure 2 A dynamic sealing device includes a rotating body 1 for conveying materials, and also includes a dynamic sealing mechanism 2 arranged on the rotating body 1. The dynamic sealing mechanism 2 is used to seal the rotating body 1 and cooperate with the discharge of materials. At the same time, the dynamic sealing mechanism 2 will continuously press against the rotating body 1 by continuously moving toward the rotating body 1 to achieve sealing, thereby extending the maintenance and replacement cycle and increasing the service life.

[0032] Reference Figure 2 and Figure 3 The dynamic sealing mechanism 2 includes a support frame 21 and a discharge end cover 22 slidably connected to the support frame 21. The discharge end cover 22 has a discharge port and is buckled on the rotating body 1. The discharge end cover 22 is provided with an adjustment center seat, and the adjustment center seat includes a center column matched with the rotating body 1 and a center seat matched with the center column. The center column is detachably connected to the rotating body 1 and is vertically arranged. When installing the discharge end cover 22, the center seat is buckled with the center column to achieve temporary positioning and support for easy installation. A sealing component 23 is provided between the discharge end cover 22 and the rotating body 1, and the support frame 21 is provided with a clamping component 24 for clamping the discharge end cover 22, and the clamping component 24 abuts against the side of the discharge end cover 22 away from the rotating body 1.

[0033] Reference Figure 3 and Figure 4 Specifically, there are two support frames 21, which are respectively arranged on both sides of the rotating body 1. In order to cooperate with the installation of the discharge end cover 22, the support frame 21 is fixedly connected with a guide rail 211, the axis of the guide rail 211 is parallel to the axis of the rotating body 1, and the guide rail 211 extends along the length direction of the rotating body 1. Correspondingly, guide slide seats 221 cooperating with the guide rail 211 are correspondingly arranged on both sides of the discharge end cover 22, and the guide slide seats 221 are slidably connected with the guide rail 211. In this embodiment, the two sides of the discharge end cover 22 are respectively fixedly connected with the connecting seats 222, and the guide slide seats 221 are installed on the connecting seats 222 in a one-to-one correspondence.

[0034] In order to guide the guide slide seat 221 and facilitate the sliding of the guide slide seat 221, the guide rail 211 is provided with a guide slide groove 2111 along its length direction. Accordingly, the guide slide seat 221 includes a guide slider 2211, the guide slider 2211 is slidably connected to the guide slide groove 2111, the guide slider 2211 is rotatably connected to a roller 2212, and the roller 2212 is rollingly connected to the guide rail 211. In this embodiment, the guide slider 2211 is installed on the connecting seat 222 by a threaded connection to achieve a detachable connection, thereby facilitating disassembly and replacement. Through such a configuration, when the clamping assembly 24 clamps the discharge end cover 22, the discharge end cover 22 can accurately and quickly move and cooperate with the rotating body 1 through the guiding effect of the guide rail 211.

[0035] Reference Figure 5 and Figure 6 In order to cooperate with the sealing assembly 23, the rotating body 1 is fixedly connected with a fixing ring 11 for cooperating with the sealing assembly 23, and the fixing ring 11 is arranged along the circumferential direction of the edge of the rotating body 1. The sealing assembly 23 includes a sealing wedge 231 arranged on the discharge end cover 22, and the sealing wedge 231 is arranged along the circumferential direction of the edge of the discharge end cover 22, and the sealing wedge 231 faces the rotating body 1, and a graphite sealing ring 232 is arranged between the sealing wedge 231 and the fixing ring 11. In this embodiment, the diameter of the graphite sealing ring 232 gradually decreases from the end away from the sealing wedge 231 to the end close to the sealing wedge 231; the sealing wedge 231 has an inclined groove 2311 for cooperating with the graphite sealing ring 232, and the shape and size of the inclined groove 2311 are adapted to the sealing wedge 231. At the same time, the fixing ring 11 is provided with a connecting piece 233 for reducing friction. The connecting piece 233 is a smooth annular part with a small friction coefficient. The connecting piece 233 abuts against the graphite sealing ring 232, that is, one end face of the graphite sealing ring 232 abuts against the connecting piece 233, and the other end face of the graphite sealing ring 232 is buckled in the inclined groove 2311.

[0036] By such arrangement, when the rotating body 1 rotates, it will drive the fixed ring 11 and the connecting piece 233 to rotate, and the rotating connecting piece 233 will continuously rub the graphite sealing ring 232. Since the friction between the connecting piece 233 and the graphite sealing ring 232 is small, the loss rate of the graphite sealing ring 232 is effectively reduced. When the graphite sealing ring 232 is worn out and has a gap, under the action of the clamping assembly 24, the discharge end cover 22 slides, driving the sealing wedge 231 and the graphite sealing ring 232 to press against the connecting piece 233 again, thereby filling and sealing the gap.

[0037] The clamping assembly 24 includes support blocks 241 respectively arranged on both sides of the rotating body 1, and the support blocks 241 are correspondingly installed on the two support frames 21. The support blocks 241 are fixedly connected with a clamping fixing seat 242, and the clamping fixing seat 242 is installed on the support block 241 by means of threaded connection to achieve convenient disassembly and replacement. The clamping fixing seat 242 is slidably connected with a clamping rod 243, and the clamping rod 243 faces the discharge end cover 22. The clamping rod 243 has a clamping end at one end facing the discharge end cover 22, and the clamping end is installed on the clamping rod 243 by means of threaded connection and abuts against the connecting seat 222 of the discharge end cover 22. At the same time, a clamping spring 244 is arranged in the clamping fixing seat 242, and the clamping spring 244 applies a force toward the discharge end cover 22 to the clamping rod 243. Under the action of the pressing spring 244 , the pressing rod 243 will press against the discharge end cover 22 and make the discharge end cover 22 have a tendency to continuously move toward the fixing ring 11 .

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0039] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A dynamic sealing device, comprising a rotating body (1), characterized in that: The invention also comprises a dynamic sealing mechanism (2) arranged on the rotating body (1), wherein the dynamic sealing mechanism (2) comprises a support frame (21) and a discharge end cover (22) slidably connected to the support frame (21), wherein the discharge end cover (22) is buckled on the rotating body (1), and a sealing component (23) is arranged between the discharge end cover (22) and the rotating body (1); the support frame (21) is provided with a clamping component (24) for clamping the discharge end cover (22), and the clamping component (24) abuts against a side of the discharge end cover (22) away from the rotating body (1).

2. A dynamic sealing device according to claim 1, characterized in that: The support frame (21) is arranged on both sides of the rotating body (1), and the support frame (21) is fixedly connected with a guide rail (211), and the axis of the guide rail (211) is parallel to the axis of the rotating body (1); guide slide seats (221) cooperating with the guide rail (211) are correspondingly arranged on both sides of the discharge end cover (22), and the guide slide seats (221) are slidably connected with the guide rail (211).

3. A dynamic sealing device according to claim 2, characterized in that: The guide rail (211) is provided with a guide slide groove (2111) along its length direction; the guide slide seat (221) comprises a guide slide block (2211); the guide slide block (2211) is slidably connected to the guide slide groove (2111); the guide slide block (2211) is rotatably connected to a roller (2212); and the roller (2212) is rollingly connected to the guide rail (211).

4. A dynamic sealing device according to any one of claims 1 to 3, characterized in that: The rotating body (1) is fixedly connected to a fixing ring (11) for cooperating with the sealing assembly (23); the sealing assembly (23) comprises a sealing wedge (231) arranged on the discharge end cover (22); a graphite sealing ring (232) is arranged between the sealing wedge (231) and the fixing ring (11).

5. A dynamic sealing device according to claim 4, characterized in that: The diameter of the graphite sealing ring (232) gradually decreases from an end away from the sealing wedge (231) to an end close to the sealing wedge (231); the sealing wedge (231) has an inclined groove (2311) for matching the graphite sealing ring (232), and the shape and size of the inclined groove (2311) are adapted to the sealing wedge (231).

6. A dynamic sealing device according to claim 4, characterized in that: The fixing ring (11) is provided with a connecting piece (233) for reducing friction, and the connecting piece (233) abuts against the graphite sealing ring (232).

7. A dynamic sealing device according to any one of claims 1 to 3, characterized in that: The clamping assembly (24) comprises support blocks (241) respectively arranged on both sides of the rotating body (1), the support blocks (241) are fixedly connected to a clamping fixing seat (242), the clamping fixing seat (242) is slidably connected to a clamping rod (243), and the clamping rod (243) faces and abuts against the discharge end cover (22); a clamping spring (244) is arranged in the clamping fixing seat (242), and the clamping spring (244) applies a force to the clamping rod (243) toward the discharge end cover (22).

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