Sealing device for feed port of drum-shaped feeder of wet ball mill

Abstract

The utility model relates to a sealing device for a feed port of a drum-shaped feeder of a wet ball mill. The sealing device comprises the drum-shaped feeder and a feeding bent pipe, a discharging port of the feeding bent pipe is arranged to be in a semi-cylindrical shape, a bolt ring is arranged on the outer side of the feeding bent pipe, and a sealing pressing plate fit bolt is arranged on the bolt ring in a threaded connection mode. The outer side of the material bent pipe is sleeved with a polyurethane sealing ring pressing plate, and one end of the sealing pressing plate fitting bolt abuts against the polyurethane sealing ring pressing plate; the outer side of the feeding bent pipe is sleeved with a rubber sealing plate pressing plate, and the polyurethane sealing ring pressing plate abuts against the rubber sealing plate pressing plate; a rubber sealing plate is arranged on the integrated metal sealing ring close to one end of the feeding bent pipe, and the rubber sealing plate is tightly pressed on the integrated metal sealing ring through a rubber sealing plate pressing plate; the feeding bent pipe is inserted into the drum-shaped feeder, so that the rubber sealing plate pressing plate abuts against the rubber sealing plate, and ore pulp leakage at the joint of the drum-shaped feeder and the discharging port of the feeding bent pipe can be avoided.

Description

Technical Field

[0001] The present application relates to the field of sealing technology, and in particular to a sealing device for a feed port of a drum feeder of a wet ball mill. Background Art

[0002] As a grinding device, ball mill equipment is widely used in mineral processing plants, building materials plants, chemical plants and other industries. It can be divided into two grinding methods: dry and wet. Mineral processing plants use continuous wet feeding ball mill grinding equipment. The use of continuous ball mill feeding has the characteristics of low water consumption, energy saving, high work efficiency, and easy to realize automatic operation. The feed bushing of the ball mill feed inlet is fixed to the feed inlet of the drum feeder, and the feed elbow outlet is directly connected. The installation of the drum feeder improves the uniformity of the feed. The feed elbow outlet and the drum feeder feed inlet and the corresponding connection are sealed with simple rubber seals or not sealed. During operation, the feed elbow outlet and the corresponding connection drum feeder continuously rotate. Continuous wet feeding causes slurry leakage at the operation site. No reasonable recycling measures have been added on site, resulting in metal loss and environmental pollution. Utility Model Content

[0003] In order to solve or partially solve the problems existing in the related art, the present application provides a sealing device for the feed port of a drum feeder of a wet ball mill, which can prevent slurry leakage at the connection between the drum feeder and the discharge port of the feeding elbow.

[0004] The present application discloses a sealing device for the feed port of a drum feeder of a wet ball mill, comprising a drum feeder and a feed elbow; comprising: an integrated metal sealing ring, a rubber sealing plate, a rubber sealing plate pressure plate, a polyurethane sealing ring, a polyurethane sealing ring pressure plate, a sealing pressure plate bolt, and a bolt ring;

[0005] The discharge port of the feeding elbow is set to be semi-cylindrical, and a bolt ring is set on the outside of the feeding elbow, and a sealing pressure plate and bolts are threadedly connected on the bolt ring;

[0006] A polyurethane sealing ring pressure plate is sleeved on the outer side of the feed elbow, and one end of the sealing pressure plate bolt abuts against the polyurethane sealing ring pressure plate;

[0007] A rubber sealing plate pressure plate is sleeved on the outer side of the feeding elbow, and the polyurethane sealing ring pressure plate abuts against the polyurethane sealing ring;

[0008] A rubber sealing plate is provided on the integrated metal sealing ring near one end of the feed elbow, and the rubber sealing plate is tightly pressed on the integrated metal sealing ring through a polyurethane sealing ring;

[0009] The feed elbow is inserted into the drum feeder so that the polyurethane sealing ring and the rubber sealing plate are pressed against each other.

[0010] Optionally, the integrated metal sealing ring is configured to be cylindrical, with flanges on both sides and a circular ring in the middle, and the rubber sealing plate is fastened to the flange at one end by a rubber sealing plate pressure plate and bolts.

[0011] Optionally, the circular ring divides the inner side of the integrated metal sealing ring into two grooves, and an inner ring baffle is provided in the groove to form a material lifting cavity.

[0012] Optionally, the polyurethane sealing ring is configured to be conical.

[0013] Optionally, the polyurethane sealing ring contacts and is squeezed and deformed by the rubber sealing plate, and then precisely matched with the conical surface of the polyurethane sealing ring to form a seal.

[0014] Optionally, the diameter of the retaining ring where the rubber sealing plate contacts the integrated metal sealing ring is larger than the inner ring diameter of the rubber sealing plate, and a margin is left, so that there is bending space after the rubber sealing plate is deformed under force, and a certain gap is left between the rubber sealing plate and the metal sealing plate.

[0015] The technical solution provided by this application may have the following beneficial effects:

[0016] The device is provided with an extended connection of an integrated metal sealing ring, and after the feeding elbow is inserted into the integrated metal sealing ring, the sealing pressure plate bolt is adjusted to tighten the polyurethane sealing ring pressure plate to bear the force, thereby distributing the force on the polyurethane sealing ring, making it convenient to adjust the gap left after the contact and friction between the polyurethane sealing ring 7 and the rubber sealing plate in the later stage, and pre-tighten the polyurethane sealing ring by adjusting the sealing pressure plate bolt to make the polyurethane sealing ring move forward to compensate for the wear gap. Finally, the polyurethane sealing ring and the rubber sealing plate are in contact with each other, squeezed and deformed, and tightly matched to form a seal, thereby avoiding leakage of slurry at the connection between the drum feeder and the discharge port of the feeding elbow.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0019] Figure 1 It is a structural diagram shown in an embodiment of the present application;

[0020] Figure 2 This is an enlarged view of the structure at point A shown in the embodiment of the present application;

[0021] Figure 3 Schematic diagram of the integrated metal sealing ring structure shown in an embodiment of the present application;

[0022] Figure 4 Schematic diagram of the feed elbow structure shown in the embodiment of the present application;

[0023] Reference numerals:

[0024] 1. Drum feeder; 2. Feed elbow; 3. Integrated metal sealing ring; 4. Ring inner baffle; 5. Rubber sealing plate; 6. Rubber sealing plate pressure plate; 7. Polyurethane sealing ring; 8. Polyurethane sealing ring pressure plate; 9. Sealing pressure plate bolt; 10. Bolt ring. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0029] In response to the above problems, an embodiment of the present application provides a sealing device for the feed port of a drum feeder of a wet ball mill. The technical solution of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 and Figure 2 and Figure 3 Figure 4 The shown embodiment shows a wet ball mill drum feeder feed inlet sealing device, including a drum feeder 1 and a feeding elbow 2. The present application sets an integrated metal sealing ring 3 between the drum feeder 1 and the feeding elbow 2. Specifically, the integrated metal sealing ring 3 is configured to be cylindrical, with flanges on both sides and a circular ring in the middle. In order to facilitate the sealing connection, the present application also includes a rubber sealing plate 5, a rubber sealing plate pressure plate 6, a polyurethane sealing ring 7, a polyurethane sealing ring pressure plate 8, a sealing pressure plate bolt 9, and a bolt ring 10.

[0031] In the present application, the discharge port of the feeding elbow 2 is set to be semi-cylindrical, and a bolt ring 10 is set on the outside of the feeding elbow 2, and a sealing pressure plate and bolt 9 are threadedly connected on the bolt ring 10; a polyurethane sealing ring pressure plate 8 is sleeved on the outside of the feeding elbow 2, and one end of the sealing pressure plate and bolt 9 is abutted against the polyurethane sealing ring pressure plate 8; a polyurethane sealing ring 7 is sleeved on the outside of the feeding elbow 2, and the polyurethane sealing ring pressure plate 8 is abutted against the polyurethane sealing ring 7; a rubber sealing plate 5 is set on the integrated metal sealing ring 3 near one end of the feeding elbow 2, and the rubber sealing plate 5 is tightly pressed on the integrated metal sealing ring 3 through the rubber sealing plate pressure plate 6; the feeding elbow 2 is inserted into the drum feeder 1 so that the polyurethane sealing ring 7 is abutted against the rubber sealing plate 5.

[0032] In the present application, an integrated metal sealing ring 3 is provided to extend the connection. One end of the integrated metal sealing ring 3 can be directly welded to one end of the drum feeder 1. Of course, it can also be sealed by other movable sealing connection methods. After the feed elbow 2 is inserted into the integrated metal sealing ring 3, the polyurethane sealing ring pressure plate 8 is tightened by adjusting the sealing pressure plate bolts 9, so that the force is dispersed on the polyurethane sealing ring 7, which is convenient for later adjustment of the gap left after the contact and friction between the polyurethane sealing ring 7 and the rubber sealing plate 5. By adjusting the sealing pressure plate bolts 9 for pre-tightening, the polyurethane sealing ring 7 is moved forward to compensate for the wear gap. Finally, the polyurethane sealing ring 7 and the rubber sealing plate 5 are in contact, extruded, deformed, and tightly matched to form a seal.

[0033] In one embodiment, Figure 3As shown, to facilitate connection and sealing, the integrated metal sealing ring 3 is cylindrical, with a flange on one side and the other side directly welded to one end of the drum feeder 1. A circular ring is constructed in the middle of the integrated metal sealing ring 3, and a rubber sealing plate 5 is fastened to the flange at one end via a rubber sealing plate pressure plate 6 and bolts. The circular ring divides the inner side of the integrated metal sealing ring 3 into two grooves, and an inner ring baffle 4 is installed in the groove to form a material lifting cavity. The discharge port of the feeding elbow 2 in the present application is set to be semi-cylindrical, that is, during use, the upper end part of the feeding elbow 2 is cut off at half the diameter, and the cutting depth is 150mm. The main function is that after the feeding elbow 2 enters the feeding port of the drum feeder and is fixed, the rubber sealing plate 5 rotates with the mill cylinder, and is divided into two grooves on the inner side of the integrated metal sealing ring 3 and an inner baffle 4 is provided in the groove to form a material lifting cavity. The main function of the inner baffle 4 is to allow the material rebounding back to the feeding port to enter the first baffle cavity. If there is too much material entering and then overflows into the second baffle cavity, it rotates with the drum feeder, and is lifted to a high place under the action of the inner baffle 4 and then falls into the notch of the feeding elbow 2. Finally, it is squeezed and sealed by the rubber sealing plate 5 and the polyurethane sealing ring 7 to prevent leakage to the outside. In this way, part of the material entering the drum feeder 1 flies or even rebounds to the feed port of the drum feeder 1, and is then lifted by the partition set inside the integrated metal sealing ring 3 and falls into the notch cut by the feeding elbow and continues to return to the drum feeder 1.

[0034] In one embodiment, the polyurethane sealing ring 7 is configured to be conical. After the polyurethane sealing ring 7 contacts and is squeezed and deformed by the rubber sealing plate 5 , the polyurethane sealing ring 7 precisely matches the conical surface of the polyurethane sealing ring 7 to form a seal.

[0035] In one embodiment, the diameter of the retaining ring where the rubber sealing plate 5 contacts the integrated metal sealing ring 3 is larger than the inner diameter of the rubber sealing plate 5, with a margin left. This allows for bending space after the rubber sealing plate 5 is deformed by force, while also leaving a certain gap between the rubber sealing plate 5 and the metal sealing plate. This allows the bent surface to tightly contact and seal with one surface of the tapered polyurethane sealing ring 7.

[0036] The installation and use of this device are as follows:

[0037] Step 1: Install the drum feeder 1 on the ball mill feed bushing according to the installation location, perform axial positioning, and fix it to the feed port of the feed bushing.

[0038] Step 2: Install the rubber sealing plate 5 on the integrated metal sealing ring 3, press the rubber sealing plate pressing plate 6 against the rubber sealing plate 5, and finally press the rubber sealing plate 5 with the upper bolts to fix it.

[0039] Step 3: Install the feeding elbow 2 on the feeding trolley support and fix it on the support with bolts.

[0040] Step 4: Install the polyurethane sealing ring 7 and the polyurethane sealing ring pressure plate 8 on the feed end of the feed elbow 2. The polyurethane sealing ring 7 is a two-plate type. After installation, it is positioned and connected through the sealing pressure plate and bolts 9.

[0041] Step 5: Move the feeding trolley horizontally so that the feeding elbow 2 enters the integrated metal sealing ring 3 of the drum feeder 1 inlet horizontally. Then, tighten the sealing plate bolts 9 on the feeding elbow to squeeze and seal the polyurethane sealing ring 7 with the rubber sealing plate 5. The sealing device is installed and put into use.

[0042] After the feed port of the drum feeder 1 of the device is connected to the feed elbow 2 by rotation, the sealing pressure plate and bolt 9 installed on the feed elbow are screwed out in the discharge direction of the feed elbow 2, so that the bolt presses the polyurethane sealing ring pressure plate 8 tightly, and the polyurethane sealing ring 7 moves toward the feed end of the drum feeder 1. By adjusting the bolt in this way, the polyurethane sealing ring 7 and the rubber sealing plate 5 are compensated for the gap after extrusion, deformation, rotation and wear. The gap formed by wear during the rotation process can be compensated at any time to avoid on-site leakage of slurry and improve the sealing effect.

[0043] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A sealing device for a drum feeder inlet of a wet ball mill, comprising a drum feeder (1) and a feed elbow (2); characterized in that: include: It also includes an integrated metal sealing ring (3), a rubber sealing plate (5), a rubber sealing plate pressure plate (6), a polyurethane sealing ring (7), a polyurethane sealing ring pressure plate (8), a sealing pressure plate bolt (9), and a bolt ring (10); The discharge port of the feed elbow (2) is arranged in a semi-cylindrical shape, the bolt ring (10) is arranged on the outer side of the feed elbow (2), and the sealing pressure plate bolt (9) is threadedly connected to the bolt ring (10); The polyurethane sealing ring pressure plate (8) is sleeved on the outer side of the feeding elbow (2), and one end of the sealing pressure plate bolt (9) is in contact with the polyurethane sealing ring pressure plate (8); The polyurethane sealing ring (7) is sleeved on the outer side of the feeding elbow (2), and the polyurethane sealing ring pressure plate (8) is in contact with the polyurethane sealing ring (7); The rubber sealing plate (5) is provided on the integrated metal sealing ring (3) near one end of the feed elbow (2), and the rubber sealing plate (5) is tightly pressed against the integrated metal sealing ring (3) through the rubber sealing plate pressing plate (6); The feed elbow (2) is inserted into the drum feeder (1) so that the polyurethane sealing ring (7) and the rubber sealing plate (5) are in abutment and pressed against each other.

2. The sealing device for the feed port of a drum feeder of a wet ball mill according to claim 1, characterized in that: The integrated metal sealing ring (3) is configured to be cylindrical, with flanges on both sides and a circular ring in the middle. The rubber sealing plate (5) is fastened to the flange at one end via a rubber sealing plate pressing plate (6) and bolts.

3. The sealing device for the feed port of a drum feeder of a wet ball mill according to claim 2, characterized in that: The circular ring divides the inner side of the integrated metal sealing ring (3) into two grooves, and an inner ring baffle (4) is provided in the groove to form a material lifting cavity.

4. The sealing device for the feed port of a drum feeder of a wet ball mill according to claim 1, characterized in that: The polyurethane sealing ring (7) is configured to be conical.

5. The sealing device for the feed port of a drum feeder of a wet ball mill according to claim 4, characterized in that: The polyurethane sealing ring (7) contacts and is squeezed and deformed by the rubber sealing plate (5), and then precisely matches with the conical surface of the polyurethane sealing ring (7) to form a seal.

6. The sealing device for the feed port of a drum feeder of a wet ball mill according to claim 4, characterized in that: The diameter of the retaining ring where the rubber sealing plate (5) contacts the integrated metal sealing ring (3) is larger than the inner ring diameter of the rubber sealing plate (5), and a margin is left. After the rubber sealing plate (5) is deformed by force, there is bending space, and a certain gap is left between the rubber sealing plate (5) and the metal sealing plate.

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