A double-sealed mechanical seal

Abstract

This utility model relates to the field of mechanical seal technology and discloses a double-seal mechanical seal, comprising: a mechanical seal assembly, the mechanical seal assembly including a housing, a spring base fixedly installed in the middle of the inner cavity of the housing, spring members fixedly connected to the upper and lower sides of the spring base, and push rings movably connected to a moving ring at the other end of each of the two spring members; and a disassembly and assembly assembly, the disassembly and assembly assembly including circular grooves and moving blocks, six circular grooves being formed around the perimeter of the surfaces of two lower pressure plates, sliding grooves being formed on the inner surface of each lower pressure plate, movable grooves being formed on the surface of each lower pressure plate, and mounting blocks being fixedly installed on the surfaces of both lower pressure plates, with a circular block fixedly installed at the other end of each mounting block. This double-seal mechanical seal, by setting up the disassembly and assembly assembly, improves the convenience of overall disassembly and assembly of the mechanical seal assembly, while also ensuring the tightness of the connection between the lower pressure plates and the housing, making it convenient for operators to use.

Description

Technical Field

[0001] This utility model relates to a double-sealed mechanical seal, belonging to the field of mechanical seal technology. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure, the elastic force of the compensation mechanism, and the cooperation of the auxiliary seal. Mechanical seals with metal bellows as the elastic loading mechanism and auxiliary seal are collectively referred to as metal bellows seals. In light-duty seals, rubber bellows are also used as auxiliary seals. However, the elasticity of rubber bellows is limited, and springs are generally required to meet the loading elastic force. Mechanical seals are usually simply referred to as mechanical seals.

[0003] Chinese Patent Publication No. CN222085134U discloses a mechanical seal that is easy to disassemble. The seal includes a main body with slots on both sides of its top outer wall. Insert plates are inserted into the slots. A lifting groove is located on the inner side of the main body near the slots, and a positioning rod is inserted into the lifting groove. A spring is sleeved on the outer wall of the positioning rod. A gear plate is slidably connected in a groove on the other side of the main body. A gear that meshes with the positioning rod and gear plate is movably mounted inside the main body via bearings. A top tube is placed on the top of the main body. Through the inserted plates, when inserted into the slots, pulling the gear plate causes the positioning rod to move using the gear mechanism. The positioning rod then compresses the spring, causing the positioning rod to retract into the inserted plate. This structure effectively avoids the disadvantages of existing devices, such as low disassembly and separation efficiency and long assembly time.

[0004] The aforementioned device mainly relies on the tension of the spring to assemble the main body and the top seat, thereby improving the maintenance of components such as the stationary ring and the rotating ring. However, in actual use, due to the connection between the mechanical seal and the external shaft, the mechanical seal will vibrate when the shaft rotates. The spring itself has the characteristic of resonance, which may reduce the stability of the connection between the main body and the top seat, making it easy for the top seat to fall off the main body, thus affecting the normal operation of the mechanical seal.

[0005] Therefore, a double-sealed mechanical seal is proposed. Utility Model Content

[0006] In view of this, the present invention provides a double-sealed mechanical seal to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0007] The technical solution of this utility model is achieved as follows: a double-sealed mechanical seal, comprising:

[0008] A mechanical seal assembly includes a housing, a spring base fixedly installed at the middle of the inner cavity of the housing, spring members fixedly connected to the upper and lower sides of the spring base, a push ring fixedly connected to a moving ring at the other end of each of the two spring members, a stationary ring movably connected to the outer side of each of the two moving rings, a sealing ring fixedly installed on the surface of each of the moving rings and the stationary rings, and a lower pressure cover plate provided on the upper and lower sides of the housing.

[0009] The assembly includes six circular slots and movable blocks. Each of the six circular slots is located around the perimeter of the two lower pressure plates. Each lower pressure plate has a sliding groove on its inner surface and a movable groove on its surface. Each of the two lower pressure plates has a mounting block fixedly installed on its surface, and a circular block is fixedly installed at the other end of each mounting block. Each circular block has an insertion hole on its surface. Six movable blocks are located on the surfaces of the two lower pressure plates. Each movable block has a fixed block fixedly installed on its top and an insertion block fixedly installed on its surface. Each fixed block has a threaded bolt connected to its surface, and the bottom of the fixed bolt is threaded to the inner surface of the lower pressure plate.

[0010] More preferably, the inner cavities of the circular groove and the sliding groove are interconnected, and the inner cavity of the movable groove is interconnected with the inner cavities of both the circular groove and the sliding groove.

[0011] More preferably, the inner cavity of the sliding groove is arc-shaped, and the circular block is slidably connected to the inner cavity of the sliding groove.

[0012] More preferably, the inner cavity of the movable groove is arc-shaped, and the mounting block is slidably connected to the inner cavity of the movable groove.

[0013] More preferably, the surface of the lower pressure cover plate is provided with a moving groove, and the moving block is slidably connected to the inner cavity of the moving groove.

[0014] More preferably, the surface of the lower pressure cover is provided with a groove, and the fixing block passes through the inner cavity of the groove and extends to the top of the lower pressure cover.

[0015] More preferably, the surface of the housing is provided with slots, and the plug passes through the inner cavity of the slot and is inserted into the inner cavity of the plug hole.

[0016] More preferably, the inner cavity of the slot and the inner cavity of the socket are both in the same horizontal direction, and the inner cavity of the slot and the inner cavity of the socket are interconnected.

[0017] The present invention has the following advantages due to the adoption of the above technical solution:

[0018] I. This utility model, through the setting of a disassembly and assembly component, involves inserting a circular block into the inner cavity of a circular slot, rotating the lower pressure plate to move the circular block circumferentially. At this point, the inner cavity of the slot and the inner cavity of the insertion hole are in the same horizontal direction, and the insertion block is inserted into the inner cavity of the insertion hole. Subsequently, the fixing block is fixed by fixing bolts, thereby realizing the connection between the housing and the two lower pressure plates. By disassembling and assembling the lower pressure plates, it is convenient to maintain and repair components such as the upper or lower spring, rotating ring, stationary ring, and sealing ring, improving the convenience of the overall disassembly and assembly of the mechanical seal assembly. It also ensures the tightness of the connection between the lower pressure plate and the housing, making it convenient for operators to use.

[0019] Second, by setting a movable groove, the movement of the movable block can be limited to prevent it from deviating in direction during movement. By setting a slot, the movement of the fixed block can be limited to prevent it from changing in direction during movement. By setting a slot, the movement of the insert block can be limited to prevent it from deviating in direction during movement, thereby affecting the connection between the housing and the lower pressure plate.

[0020] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the shell structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the mechanical sealing assembly structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the fixing bolt disassembly structure of this utility model;

[0026] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A;

[0027] Figure 6This is a schematic diagram of the disassembly and assembly components of this utility model.

[0028] Reference numerals: 1. Mechanical seal assembly; 101. Housing; 102. Spring base; 103. Spring component; 104. Moving ring; 105. Stationary ring; 106. Sealing ring; 107. Lower pressure cover plate; 2. Assembly / disassembly assembly; 201. Circular groove; 202. Sliding groove; 203. Movable groove; 204. Mounting block; 205. Circular block; 206. Insertion hole; 207. Moving block; 208. Fixing block; 209. Insertion block; 210. Fixing bolt; 211. Groove; 212. Moving groove; 213. Slot. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1-6 As shown, this embodiment of the present invention provides a double-sealed mechanical seal, comprising:

[0033] Mechanical seal assembly 1 includes a housing 101. A spring base 102 is fixedly installed at the middle of the inner cavity of the housing 101. Spring members 103 are fixedly connected to the upper and lower sides of the spring base 102. The other ends of the two spring members 103 are fixedly connected to a moving ring 104. A stationary ring 105 is movably connected to the outer side of the two moving rings 104. A sealing ring 106 is fixedly installed on the surface of the moving ring 104 and the stationary ring 105. A lower pressure cover plate 107 is provided on the upper and lower sides of the housing 101.

[0034] The disassembly / assembly assembly 2 includes six circular grooves 201 and six movable blocks 207. Six circular grooves 201 are formed around the surfaces of the two lower pressure plates 107. The inner surface of each lower pressure plate 107 has a sliding groove 202, and the surface of each lower pressure plate 107 has a movable groove 203. An mounting block 204 is fixedly installed on the surface of each of the two lower pressure plates 107. A circular block 205 is fixedly installed at the other end of each mounting block 204. An insertion hole 206 is formed on the surface of each circular block 205. Six movable blocks 207 are disposed on the surfaces of the two lower pressure plates 107. A fixed... The fixed block 208 and the movable block 207 are fixedly mounted with insert blocks 209. The fixed block 208 is threadedly connected with a fixing bolt 210. The bottom of the fixing bolt 210 is threadedly connected to the inner surface of the lower pressure cover plate 107. The inner cavities of the circular groove 201 and the sliding groove 202 are interconnected. The inner cavity of the movable groove 203 is interconnected with the inner cavities of the circular groove 201 and the sliding groove 202. The inner cavity of the sliding groove 202 is arc-shaped. The circular block 205 is slidably connected to the inner cavity of the sliding groove 202. The inner cavity of the movable groove 203 is arc-shaped. The mounting block 204 is slidably connected to the inner cavity of the movable groove 203.

[0035] By setting up the disassembly and assembly component 2, after the circular block 205 is inserted into the inner cavity of the circular slot 201, the lower pressure cover plate 107 is rotated, causing the circular block 205 to move in the circumferential direction. At this time, the inner cavity of the slot 213 and the inner cavity of the insertion hole 206 are in the same horizontal direction, and the insertion block 209 is inserted into the inner cavity of the insertion hole 206. Then, the fixing block 208 is fixed by the fixing bolt 210, thereby realizing the connection between the housing 101 and the two lower pressure cover plates 107. By disassembling and assembling the lower pressure cover plate 107, it is convenient to maintain and repair the upper or lower spring component 103, the moving ring 104, the stationary ring 105 and the sealing ring 106, etc., which improves the convenience of the overall disassembly and assembly of the mechanical seal component 1, and also ensures the tightness of the connection between the lower pressure cover plate 107 and the housing 101, making it convenient for operators to use.

[0036] Example 2

[0037] like Figure 4-6 As shown, in one embodiment, the surface of the lower cover plate 107 is provided with a moving groove 212, the moving block 207 is slidably connected in the inner cavity of the moving groove 212, the surface of the lower cover plate 107 is provided with a slot 211, the fixing block 208 passes through the inner cavity of the slot 211 and extends to the top of the lower cover plate 107, the surface of the housing 101 is provided with a slot 213, the insert block 209 passes through the inner cavity of the slot 213 and is inserted into the inner cavity of the insertion hole 206, the inner cavity of the slot 213 and the inner cavity of the insertion hole 206 are both in the same horizontal direction, and the inner cavity of the slot 213 and the inner cavity of the insertion hole 206 are interconnected.

[0038] By setting the movable groove 212, the movement of the movable block 207 can be limited to prevent it from deviating in direction during movement. By setting the slot 211, the movement of the fixed block 208 can be limited to prevent it from changing in direction during movement. By setting the slot 213, the movement of the insert block 209 can be limited to prevent it from deviating in direction during movement, thereby affecting the connection between the housing 101 and the lower cover plate 107.

[0039] When this utility model is in operation: when it is necessary to repair or replace components such as the upper or lower spring 103, moving ring 104, stationary ring 105, and sealing ring 106, the fixing bolt 210 is rotated to release the limitation on the fixing block 208. At this time, the fixing block 208, moving block 207, and insert block 209 are moved outward, thereby releasing the restriction of the circular block 205 by the insert block 209. Then, by rotating the lower pressure plate 107, the lower pressure plate 107 drives the mounting block 204 and the circular block 205 to move in the circumferential direction. When the circular block 205 moves from the inner cavity of the sliding groove 202 to the inner cavity of the circular groove 201, the lower pressure plate 107 is pulled to remove the circular block 205 from the inner cavity of the circular groove 201, thereby releasing the connection between the housing 101 and the lower pressure plate 107, thus facilitating the operator to repair or replace the components in the inner cavity of the housing 101.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A double seal machine closure, characterized in that, include: Mechanical seal assembly (1), the mechanical seal assembly (1) includes a housing (101), a spring base (102) is fixedly installed in the middle of the inner cavity of the housing (101), spring members (103) are fixedly connected to the upper and lower sides of the spring base (102), the other ends of the two spring members (103) are fixedly connected to a moving ring (104), a stationary ring (105) is movably connected to the outer side of the two moving rings (104), a sealing ring (106) is fixedly installed on the surface of the moving ring (104) and the stationary ring (105), and a lower pressure cover plate (107) is provided on the upper and lower sides of the housing (101). The disassembly assembly (2) includes a circular groove (201) and a movable block (207). Six circular grooves (201) are formed around the surfaces of the two lower pressure plates (107). A sliding groove (202) is formed on the inner surface of each lower pressure plate (107), and a movable groove (203) is formed on the surface of each lower pressure plate (107). An mounting block (204) is fixedly installed on the surface of each of the two lower pressure plates (107). A circular groove is fixedly installed at the other end of each mounting block (204). The circular block (205) has a hole (206) on its surface. The six movable blocks (207) are all disposed on the surfaces of the two lower pressure plates (107). A fixing block (208) is fixedly installed on the top of the movable block (207). An insert block (209) is fixedly installed on the surface of the movable block (207). A fixing bolt (210) is threadedly connected to the surface of the fixing block (208). The bottom of the fixing bolt (210) is threadedly connected to the inner surface of the lower pressure plate (107).

2. A double seal machine seal according to claim 1, characterised in that: The inner cavities of the circular groove (201) and the sliding groove (202) are interconnected, and the inner cavity of the movable groove (203) is interconnected with the inner cavities of the circular groove (201) and the sliding groove (202).

3. A double seal machine seal according to claim 1, characterised in that: The inner cavity of the sliding groove (202) is arc-shaped, and the circular block (205) is slidably connected in the inner cavity of the sliding groove (202).

4. A double seal machine seal according to claim 1, wherein: The inner cavity of the movable groove (203) is arc-shaped, and the mounting block (204) is slidably connected to the inner cavity of the movable groove (203).

5. A double seal machine seal according to claim 1, wherein: The surface of the lower cover plate (107) is provided with a moving groove (212), and the moving block (207) is slidably connected in the inner cavity of the moving groove (212).

6. A double seal machine seal according to claim 1, wherein: The surface of the lower pressure cover (107) is provided with a slot (211), and the fixing block (208) passes through the inner cavity of the slot (211) and extends to the top of the lower pressure cover (107).

7. A double seal machine seal according to claim 1 wherein: The surface of the housing (101) is provided with slots (213), and the plug (209) passes through the inner cavity of the slot (213) and is inserted into the inner cavity of the socket (206).

8. A double seal machine seal according to claim 7, characterised in that: The inner cavity of the slot (213) and the inner cavity of the socket (206) are both in the same horizontal direction, and the inner cavity of the slot (213) and the inner cavity of the socket (206) are interconnected.

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