Bearing bush type protective sleeve, sealing structure and hydraulic pulping machine

Abstract

The utility model discloses a bearing bush type protective sleeve, a sealing structure and a hydraulic pulping machine, and relates to the technical field of pulping equipment, the bearing bush type protective sleeve comprises a protective sleeve body, the protective sleeve body comprises a plurality of protective parts with arc-shaped cross section areas and equal height, and the sum of central angles of the protective parts is 360 degrees. The sealing structure comprises a bearing bush type protective sleeve, an inner protective sleeve, a water seal ring, a packing and a packing gland. The hydraulic pulping machine comprises a protective sleeve body and a sealing structure, and further comprises a water pan which is fixedly installed on the shell and arranged on the lower side of the packing gland, and a water leakage hole is formed in the water pan. The packing and the shell are separated through the protective sleeve body, the shell can be prevented from being abraded, and therefore the whole shell can be prevented from being replaced, the maintenance cost can be reduced, and the downtime can be shortened. And the water pan can collect the dropped slurry, so that the slurry can be prevented from dropping onto the belt, and belt slipping caused by the slurry can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of pulping equipment technology, and in particular to a bearing-type protective sleeve, a sealing structure, and a hydraulic pulping machine. Background Technology

[0002] A hydraulic pulper is a mechanical-hydraulic mixing device that uses a high-speed rotating impeller to generate shear and centrifugal forces to thoroughly mix solid raw materials (such as pulp, chemical granules, fibers, etc.) with water or other liquids, forming a homogeneous suspension or slurry. Its core function is the efficient crushing, dispersion, and homogenization of materials, and it is widely used in industrial fields requiring liquid mixing or pulping.

[0003] In hydraulic pulping machines, the packing seal structure is the core component ensuring its sealing performance. For example... Figure 1 As shown, the existing packing seal structure typically consists of an inner protective sleeve 2, a water seal ring 3, packing 4, and a packing gland 5. The impeller shaft and coupling 6 are inserted into the pulper tank. After the packing 4 is pressed by the packing gland 5, it fills the gap between the shaft and the housing 7, forming a static seal. The inner protective sleeve 2 is placed between the packing 4 and the coupling 6 to withstand the wear of the packing 4. Shaft seal water is injected into the packing 4 through the water seal ring 3. Its pressure is slightly higher than the working pressure of the liquid inside the tank, forming a liquid seal barrier to prevent slurry leakage.

[0004] However, when the packing 4 loosens due to prolonged use or is not replaced in time, friction will occur between the packing 4 and the inner protective sleeve 2, causing the housing 7 to wear synchronously. The housing 7 is the main structure of the equipment; once worn, it cannot be repaired, requiring complete equipment replacement or complex welding repairs, resulting in high maintenance costs and long downtime. Simultaneously, during operation, the inner protective sleeve 2 will continuously rub against the packing 4, forming packing powder. This powder mixes with the shaft seal water to form a slurry. When this slurry drips onto the lower belt, it causes belt slippage, affecting transmission efficiency and impacting the production environment's hygiene. Utility Model Content

[0005] The purpose of this utility model is to provide a bearing-type protective sleeve that is easy to install and remove and can reduce maintenance costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bearing-type protective sleeve, comprising a protective sleeve body, the protective sleeve body comprising a plurality of protective components with arc-shaped cross-sectional areas and equal heights, the sum of the central angles of the protective components being 360°, a screw hole being opened on the connecting surface of two adjacent protective components, and a stepped hole communicating with the screw hole being opened on the side wall of the protective component.

[0007] The technical principle of this utility model is as follows: The protective sleeve body is placed between the housing and the packing, thereby preventing wear on the housing. The bearing-type protective sleeve body is easy for operators to remove from the equipment for easy replacement. The protective sleeve body is composed of multiple protective components. When replacing the protective sleeve body, only a single protective component needs to be replaced according to the wear condition of the protective components, thereby reducing maintenance costs.

[0008] Furthermore, the protective component includes a working part disposed between the packing and the housing to prevent wear on the housing, and a mounting part fixedly mounted on the housing for mounting the protective sleeve body.

[0009] Furthermore, the working part has a through hole for introducing shaft seal water.

[0010] Another objective of this invention is to provide a sealing structure that prevents the housing from being worn and can seal the inside of the housing.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure, including the aforementioned bearing-type protective sleeve, and further including an inner protective sleeve, a water seal ring, packing, and a packing gland. The inner protective sleeve is coaxially fixedly installed on the coupling. A cavity is provided between the housing and the inner protective sleeve. The packing and the working part abut against each other and are both located within the cavity. The working part abuts against the housing, and the packing abuts against the inner protective sleeve. The number of packings is greater than one. The water seal ring is located among multiple packings. The packing gland is fixedly installed on the mounting part and abuts against the packing to press the packing.

[0012] The technical principle of this utility model is as follows: Under the action of the packing and the packing gland, the inside of the shell can be sealed. When the equipment is running, the packing will be worn and there will be some loosening in the cavity. The friction generated thereon will be on the inner protective sleeve and the protective sleeve body, thereby avoiding direct contact between the packing and the shell, and thus avoiding wear on the shell 7.

[0013] Furthermore, the housing has a water channel for receiving shaft seal water, and the through hole is connected to the water channel to realize the injection of shaft seal water into the water seal ring.

[0014] Another objective of this invention is to provide a hydraulic pulping machine that has low maintenance costs and can prevent water leakage.

[0015] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic pulping machine, including the sealing structure described above, and a water receiving tray fixedly installed on the housing and disposed below the packing gland.

[0016] The technical principle of this utility model is as follows: The protective sleeve body is placed between the packing and the housing. The protective sleeve body can be fixedly installed on the housing through the mounting part. The working part can prevent the packing from contacting the housing, thereby preventing the packing from being worn. After working for a period of time, only the protective sleeve body needs to be replaced, without replacing the entire housing. This reduces maintenance costs, shortens downtime, and allows for the replacement of only a single protective component, further reducing maintenance costs.

[0017] The slurry drips directly onto the water receiving tray and then flows out through the drain hole from the external pipe, preventing the slurry from dripping onto the belt and thus avoiding belt slippage caused by the slurry.

[0018] Furthermore, the water receiving tray includes multiple water receiving components with a vertical projection area of ​​fan shape, the sum of the central angles of the multiple water receiving components is 360°, and each water receiving component has a leakage hole.

[0019] Furthermore, the shell is provided with a water inlet pipe that communicates with the water channel, the packing gland has a limiting hole for the water inlet pipe to pass through, and the water inlet plate is provided with a connecting pipe that passes through the water inlet plate for the water inlet pipe to pass through.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. By separating the packing from the housing through the protective sleeve, wear on the housing can be avoided, thus avoiding the need to replace the entire housing, thereby reducing maintenance costs and downtime.

[0022] 2. The protective cover is made up of multiple protective components. When replacing it, only a single protective component needs to be replaced, which can further reduce maintenance costs.

[0023] 3. The water receiving tray can collect dripping slurry, thereby preventing slurry from dripping onto the belt and thus preventing belt slippage caused by slurry. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the existing technology;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 In this utility model Figure 2 Enlarged view of point A;

[0027] Figure 4 This is a structural diagram of the protective sleeve body in this utility model;

[0028] Figure 5 This is a structural diagram of the water receiving tray in this utility model.

[0029] In the above attached figures:

[0030] 1. Protective sleeve body; 101. Protective component; 1011. Working part; 1012. Mounting part; 1013. Through hole; 102. Stepped hole; 103. First mounting hole; 104. Second mounting hole;

[0031] 2. Inner protective sleeve; 3. Water seal ring; 4. Packing;

[0032] 5. Packing gland; 501. Limiting hole;

[0033] 6. Couplings;

[0034] 7. Shell; 701. Waterway;

[0035] 8. Water tray; 801. Water fitting; 8011. Drain hole; 802. Connecting pipe;

[0036] 9. Water pipe joints. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments; the structures described in various embodiments can be freely combined without conflict in terms of structure or principle.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] The following description, in conjunction with the accompanying drawings, describes some embodiments of the present invention:

[0041] like Figure 4 As shown, this utility model proposes a bearing-type protective sleeve, including a protective sleeve body 1. The protective sleeve body 1 includes a plurality of protective components 101 with arc-shaped cross-sectional areas and equal heights. The sum of the central angles of the protective components 101 is 360°. A screw hole is opened on the connecting surface of two adjacent protective components 101. A stepped hole 102 communicating with the screw hole is opened on the side wall of the protective component 101.

[0042] The protective sleeve body 1 is assembled from multiple protective components 101 with arc-shaped cross-sectional areas. There can be two, three, four, or more protective components 101, ensuring that the sum of the central angles of all protective components 101 is 360°. To reduce replacement time, two protective components 101 are preferred. A bolt is inserted through the stepped hole 102 of one protective component 101 and threaded into the threaded hole of the other protective component 101 to form the protective sleeve body 1. When replacing the protective sleeve body 1, only one protective component 101 needs to be replaced depending on its wear condition, thus reducing maintenance costs. Furthermore, the bearing-type protective sleeve body 1 facilitates easy removal from the equipment by operators for replacement.

[0043] Furthermore, such as Figure 4 As shown, the protective component 101 includes a working part 1011 disposed between the packing 4 and the housing 7 to prevent the housing 7 from being worn, and a mounting part 1012 fixedly mounted on the housing 7 for mounting the protective sleeve body 1. The working part 1011 has a through hole 1013 for introducing shaft seal water.

[0044] The mounting part 1012 is integrally formed on the working part 1011. The mounting part 1012 has a first mounting hole 103. By passing a bolt through the first mounting hole 103 and threading it onto the housing 7, the protective cover body 1 can be fixedly installed on the housing 7. The bolt connection facilitates the assembly and disassembly of the protective cover body 1.

[0045] like Figure 3 As shown, a sealing structure includes the aforementioned bearing-type protective sleeve, and further includes an inner protective sleeve 2, a water seal ring 3, packing 4, and a packing gland 5. The inner protective sleeve 2 is coaxially fixedly installed on the coupling 6. A cavity is provided between the housing 7 and the inner protective sleeve 2. The packing 4 and the working part 1011 abut against each other and are both disposed in the cavity. The working part 1011 abuts against the housing 7, and the packing 4 abuts against the inner protective sleeve 2. The number of packing 4 is greater than 1. The water seal ring 3 is disposed among multiple packing 4. The packing gland 5 is fixedly installed on the mounting part 1012 and abuts against the packing 4 to press the packing 4.

[0046] A second mounting hole 104 is also provided on the working part, through which the packing gland 5 can be fixedly installed on the mounting part 1012. During equipment operation, the packing 4 will become worn and loose within the cavity. The resulting friction will act on the inner protective sleeve 2 and the protective sleeve body 1, thus preventing wear on the housing 7. When replacement is needed, the protective sleeve body 1 can be directly replaced. The packing 4 and the packing gland 5 form a static seal inside the housing 7. Shaft seal water is injected into the packing through the water seal ring 3, with a pressure slightly higher than the working pressure of the liquid inside the tank, forming a liquid seal barrier and further improving the sealing effect inside the housing 7.

[0047] Furthermore, such as Figure 3 As shown, the housing 7 has a water channel 701 for receiving shaft seal water, and a through hole 1013 is connected to the water channel (701) to realize the injection of shaft seal water into the water seal ring 3. A water pipe connector 9 is provided in the water channel 701, and the shaft seal water can be introduced into the water seal ring 3 through the water channel 701 by connecting an external water pipe.

[0048] like Figures 2-5 As shown, a hydraulic pulping machine includes the sealing structure described above, and also includes a water receiving tray 8 fixedly installed on the housing 7 and disposed below the packing gland 5.

[0049] The slurry drips directly onto the water receiving tray 8, preventing it from dripping onto the belt and thus avoiding belt slippage caused by the slurry.

[0050] Furthermore, such as Figure 5 As shown, the water receiving tray 8 includes multiple water receiving components 801 with a vertical projection area of ​​fan shape. The sum of the central angles of the multiple water receiving trays 8 is 360°. Each water receiving tray 8 has a drainage hole 8011.

[0051] The number of water receiving components 801 can be 2, 3, 4, etc., ensuring that the sum of the central angles of multiple water receiving components 801 is 360°, and that each water receiving component 801 abuts against the two adjacent components 801, without any connection between adjacent components 801. After the packing 4 is worn, its sealing performance to the housing 7 will decrease. After the equipment has been running for a period of time, the leakage hole 8011 can be sealed. The amount of slurry inside different water receiving components 801 can indicate the wear condition of the protective sleeve body 1, thus allowing for periodic replacement of the protective sleeve body 1 and the packing 4. For ease of disassembly and assembly, the number of water receiving trays 8 is preferably 3.

[0052] Furthermore, such as Figure 3 and Figure 5 As shown, the housing 7 is provided with a water inlet pipe that communicates with the water channel 701, the packing gland 5 is provided with a limiting hole 501 for the water inlet pipe to pass through, and the water inlet plate 8 is provided with a connecting pipe 802 that passes through the water inlet plate 8 for the water inlet pipe to pass through.

[0053] The connecting pipe is higher than the surface of the water receiving tray 8 to prevent slurry from leaking out of the connecting pipe and causing the belt to slip. When the external water pipe is fixed to the water pipe joint 9 by means of cable ties, the connection between the water pipe joint 9 and the external water pipe is set in the connecting pipe 802, which makes the equipment more aesthetically pleasing.

Claims

1. A bearing-type protective sleeve, characterized in that, The protective sleeve body (1) includes multiple protective components (101) with arc-shaped cross-sectional areas and equal heights. The sum of the central angles of the protective components (101) is 360°. Screw holes are opened on the connecting surfaces of two adjacent protective components (101). Stepped holes (102) communicating with the screw holes are opened on the sidewalls of the protective components (101).

2. The bearing-type protective sleeve according to claim 1, characterized in that, The protective component (101) includes a working part (1011) disposed between the packing (4) and the housing (7) to prevent the housing (7) from being worn, and a mounting part (1012) fixedly mounted on the housing (7) for mounting the protective sleeve body (1).

3. The bearing-type protective sleeve according to claim 2, characterized in that, The working part (1011) has a through hole (1013) for introducing shaft seal water.

4. A sealing structure, characterized in that, The bearing bush type protective sleeve according to claim 3 further includes an inner protective sleeve (2), a water seal ring (3), packing (4) and a packing gland (5). The inner protective sleeve (2) is coaxially fixedly installed on the coupling (6). A cavity is provided between the housing (7) and the inner protective sleeve (2). The packing (4) and the working part (1011) abut against each other and are both located in the cavity. The working part (1011) abuts against the housing (7), and the packing (4) abuts against the inner protective sleeve (2). The number of packings (4) is greater than 1. The water seal ring (3) is located between multiple packings (4). The packing gland (5) is fixedly installed on the mounting part (1012). The packing gland (5) abuts against the packing (4) to press the packing (4).

5. A sealing structure according to claim 4, characterized in that, The housing (7) has a water channel (701) for accessing the shaft seal water, and the through hole (1013) is connected to the water channel (701) to realize the injection of shaft seal water into the water seal ring (3).

6. A hydraulic pulping machine, characterized in that, The sealing structure as described in claim 5 also includes a water receiving tray (8) that is fixedly installed on the housing (7) and disposed below the packing gland (5).

7. A hydraulic pulping machine according to claim 6, characterized in that, The water receiving tray (8) includes multiple water receiving parts (801) with a vertical projection area of ​​fan shape. The sum of the central angles of the multiple water receiving parts (801) is 360°. Each water receiving part (801) has a water leakage hole (8011).

8. A hydraulic pulping machine according to claim 6 or 7, characterized in that, The shell (7) is provided with a water inlet pipe that communicates with the water channel (701), the packing gland (5) is provided with a limiting hole (501) for the water inlet pipe to pass through, and the water inlet plate (8) is provided with a connecting pipe (802) that passes through the water inlet plate (8) for the water inlet pipe to pass through.

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