Back-to-back packaging type mechanical seal transmission device

Abstract

The utility model discloses a back-to-back packaging type mechanical sealing transmission device, which relates to the technical field of mechanical sealing and comprises a rotating shaft main body, a shaft sleeve is fixedly sleeved on the outer wall of the rotating shaft main body, a connecting assembly is sleeved on the outer wall of the shaft sleeve, and the connecting assembly comprises two groups of semicircular moving ring fixing seats sleeved on the outer wall of the shaft sleeve. The upper end and the lower end of each moving ring fixing base are each provided with a fixing assembly. The two fixing assemblies comprise first fixing bases fixedly installed at the upper end and the lower end of one movable ring fixing base, and L-shaped inserting rods are fixedly installed on one sides of the first fixing bases. The pull handle is pulled to drive the connecting rod and the trapezoidal sliding block to move in the direction away from the inserting groove, after the trapezoidal sliding block completely moves into the movable groove, the L-shaped inserting rod loses limitation of the trapezoidal sliding block, and therefore the two sets of semicircular moving ring fixing bases are separated and taken down from the limiting groove, and the moving ring fixing bases are more convenient and time-saving to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a back-to-back assembled mechanical seal transmission device. Background Technique

[0002] A mechanical seal refers to a device that prevents fluid leakage and is composed of at least a pair of end faces perpendicular to the rotation axis. Under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and with the cooperation of auxiliary seals, the end faces remain in contact and relatively slide. The transmission structure of an assembled mechanical seal mainly consists of a rotating shaft, a shaft sleeve, a shaft sleeve insert, and a transmission part. Among them, the shaft sleeve insert is fixedly arranged on the outer periphery of the shaft sleeve, the transmission part is arranged on the outer periphery of the shaft sleeve and moves relative to the shaft sleeve, and the transmission part and the shaft sleeve insert are meshed with each other through concave and convex parts. When the rotating shaft rotates, it drives the shaft sleeve and the shaft sleeve insert to rotate, and finally the shaft sleeve insert drives the transmission part to rotate to achieve transmission.

[0003] The existing patent (publication number: CN213236069U) discloses that through the mutual cooperation of a positioning bracket and a positioning groove, the dynamic ring is positioned, thus facilitating the installation of the dynamic ring; the dynamic ring is fixedly connected to the dynamic ring fixing seat through a connecting component. By pressing the pressing frame, the dynamic ring and the dynamic ring fixing frame can be disassembled and assembled without the need to rely on other auxiliary tools, making the disassembly and assembly between the dynamic ring and the dynamic ring fixing seat more convenient, thereby solving the problem of inconvenient installation of the transmission structure of the assembled mechanical seal.

[0004] However, the above technical solution still has certain defects. The dynamic ring fixing seat of the above device is set as a circular ring as a whole. After the staff removes the dynamic ring from the dynamic ring fixing seat, it is necessary to first remove the dynamic ring fixing seat from the limiting groove of the shaft sleeve. Since the dynamic ring fixing seat is a circular ring as a whole, it can only be removed from the end of the rotating shaft. This disassembly process is time-consuming and cumbersome. Therefore, a back-to-back assembled mechanical seal transmission device is proposed. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a back-to-back assembled mechanical seal transmission device to solve the technical problems raised in the above background.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A back-to-back assembled mechanical seal transmission device includes a rotating shaft main body, an outer wall of the rotating shaft main body is fixedly sleeved with a shaft sleeve, an outer wall of the shaft sleeve is sleeved with a connecting component, the connecting component includes two semi-circular dynamic ring fixing seats sleeved on the outer wall of the shaft sleeve, and a set of fixing components is provided at both the upper and lower ends of the two dynamic ring fixing seats;

[0007] The two sets of the fixed components include a first fixed seat fixedly installed at the upper and lower ends of one set of the moving ring fixed seats. One side of the first fixed seat is fixedly installed with an L-shaped insertion rod. The upper and lower ends of the other set of the moving ring fixed seats are fixedly installed with a second fixed seat. A slot matching the L-shaped insertion rod is opened on one side of the second fixed seat close to the first fixed seat. The L-shaped insertion rod is inserted into the slot. An activity slot is opened on one side inside the slot. A trapezoidal slider is slidably connected in the activity slot. One side of the trapezoidal slider is fixedly connected with a connecting rod. The other end of the connecting rod penetrates and extends to the outside of the second fixed seat and is fixedly installed with a pull handle. A limiting spring is sleeved on the outer wall of the connecting rod. One end of the limiting spring is fixedly connected with one side of the trapezoidal slider, and the other end is fixedly connected with one side of the activity slot away from the slot.

[0008] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, a gland is fixedly sleeved on the outer wall of the rotating shaft main body at one end of the shaft sleeve. One side of the gland close to the moving ring fixed seat is fixedly connected with a stationary ring fixed seat. An installation cavity is opened in the stationary ring fixed seat, and a stationary ring is slidably connected in the installation cavity.

[0009] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, a plurality of groups of equally spaced pressing springs are fixedly installed at the bottom of the installation cavity. The other ends of the pressing springs are fixedly connected with the stationary ring.

[0010] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, a sliding slot is opened on the inner wall of the installation cavity. A sliding bracket is fixedly sleeved on the outer wall of the stationary ring, and the sliding bracket is located inside the sliding slot.

[0011] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, a limiting slot is opened on the outer wall of the shaft sleeve. The two sets of the moving ring fixed seats are located inside the limiting slot. A moving ring is arranged on one side of the moving ring fixed seat. One side of the moving ring close to the moving ring fixed seat is fixedly connected with a positioning ring. The moving ring fixed seat is fixedly connected with the positioning ring on the moving ring through a fixing bolt. One side of the moving ring away from the moving ring fixed seat is closely attached to one side of the stationary ring.

[0012] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, the stationary ring fixed seat is fixedly connected with the gland through a plurality of groups of anti-rotation pins.

[0013] As a preferred technical solution of the back-to-back assembled mechanical seal transmission device of the present utility model, a sealing ring is installed at the connection between the shaft sleeve and the rotating shaft main body.

[0014] To sum up, the present utility model mainly has the following beneficial effects:

[0015] The utility model drives the connecting rod and the trapezoidal slider to move away from the slot by pulling the pull handle. When the trapezoidal slider completely moves into the movable slot, the L-shaped insertion rod loses the limit of the trapezoidal slider, so as to separate the two semi-circular movable ring fixing seats and remove them from the limit slot, making the disassembly of the movable ring fixing seat more convenient and time-saving. When it is necessary to install the two movable ring fixing seats, align the L-shaped insertion rod with the slot and insert it into the slot. The L-shaped insertion rod will squeeze the trapezoidal slider and the limit spring to move into the movable slot. When the L-shaped insertion rod is completely inserted to the bottom of the slot, the trapezoidal slider is pushed above the L-shaped insertion rod by the elastic force of the limit spring itself to complete the limit fixation. Its installation is also convenient, improving the installation efficiency of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the gland structure of the utility model;

[0018] Figure 3 is a schematic diagram of a partial structure of the connecting component of the utility model;

[0019] Figure 4 is a side sectional view of the stationary ring fixing seat of the utility model;

[0020] Figure 5 is an unfolded view of the fixing component of the utility model;

[0021] Figure 6 is a side sectional view of the second fixing seat of the utility model.

[0022] In the figure: 100, the main body of the rotating shaft; 200, the connecting component; 300, the fixing component;

[0023] 110, the shaft sleeve; 120, the sealing ring; 130, the limit slot;

[0024] 210, the gland; 220, the stationary ring fixing seat; 221, the installation cavity; 222, the sliding slot; 230, the anti-rotation pin; 240, the stationary ring; 250, the sliding bracket; 260, the compression spring; 270, the movable ring fixing seat; 280, the movable ring; 281, the positioning ring; 290, the fixing bolt;

[0025] 310, the first fixing seat; 320, the L-shaped insertion rod; 330, the second fixing seat; 340, the slot; 350, the movable slot; 360, the trapezoidal slider; 370, the connecting rod; 380, the pull handle; 390, the limit spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described by referring to the accompanying drawings below are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0027] The following will describe the embodiments of the present utility model according to its overall structure.

[0028] A back-to-back integrated mechanical seal drive device, as Figure 1-6 shown, includes a rotating shaft main body 100. An outer wall of the rotating shaft main body 100 is fixedly sleeved with a shaft sleeve 110. An outer wall of the shaft sleeve 110 is sleeved with a connection assembly 200. The connection assembly 200 includes two groups of semi-circular moving ring fixing seats 270 sleeved on the outer wall of the shaft sleeve 110, and a group of fixing assemblies 300 are provided at both the upper and lower ends of the two groups of moving ring fixing seats 270; the two groups of fixing assemblies 300 include first fixing seats 310 fixedly installed at the upper and lower ends of a group of moving ring fixing seats 270. An L-shaped insertion rod 320 is fixedly installed on one side of the first fixing seat 310. Second fixing seats 330 are fixedly installed at the upper and lower ends of the other group of moving ring fixing seats 270. A slot 340 matching the L-shaped insertion rod 320 is opened on one side of the second fixing seat 330 close to the first fixing seat 310. The L-shaped insertion rod 320 is inserted into the slot 340. An activity slot 350 is opened on one side in the slot 340. A trapezoidal slider 360 is slidably connected in the activity slot 350. One side of the trapezoidal slider 360 is fixedly connected with a connecting rod 370. The other end of the connecting rod 370 penetrates and extends to the outside of the second fixing seat 330 and is fixedly installed with a pulling handle 380. An outer wall of the connecting rod 370 is sleeved with a limiting spring 390. One end of the limiting spring 390 is fixedly connected with one side of the trapezoidal slider 360, and the other end is fixedly connected with one side of the activity slot 350 away from the slot 340.

[0029] When it is necessary to disassemble the moving ring fixing seat 270, the staff pulls the pulling handles 380 at the upper and lower ends of the moving ring fixing seat 270, thereby driving the connecting rod 370 and the trapezoidal slider 360 to move in a direction away from the slot 340. At this time, the limiting spring 390 is compressed. When the trapezoidal slider 360 completely moves into the activity slot 350, the L-shaped insertion rod 320 loses the limitation of the trapezoidal slider 360, so that the two groups of semi-circular moving ring fixing seats 270 are separated and removed from the limiting slot 130, making the disassembly of the moving ring fixing seat 270 more convenient and time-saving. At the same time, when it is necessary to install the two groups of moving ring fixing seats 270, align the L-shaped insertion rod 320 with the slot 340 and insert it therein. The L-shaped insertion rod 320 will squeeze the trapezoidal slider 360 and the limiting spring 390 to move into the activity slot 350. When the L-shaped insertion rod 320 is completely inserted to the bottom of the slot 340, the trapezoidal slider 360 is pushed above the L-shaped insertion rod by the self-elastic force of the limiting spring 390 to complete the limiting fixation. Its installation is also convenient, improving the installation efficiency of the staff.

[0030] Please refer particularly to Figure 1 and Figure 3 As shown, at one end of the shaft sleeve 110 located on the outer wall of the rotating shaft main body 100, a gland 210 is fixedly sleeved. On the side of the gland 210 close to the moving ring fixing seat 270, a static ring fixing seat 220 is fixedly connected. An installation cavity 221 is opened in the static ring fixing seat 220, and a static ring 240 is slidably connected in the installation cavity 221. At the bottom of the installation cavity 221, a number of equally spaced pressing springs 260 are fixedly installed, and the other end of the pressing spring 260 is fixedly connected to the static ring 240. At one end of the shaft sleeve 110 located on the outer wall of the rotating shaft main body 100, a gland 210 is fixedly sleeved. On the side of the gland 210 close to the moving ring fixing seat 270, a static ring fixing seat 220 is fixedly connected. An installation cavity 221 is opened in the static ring fixing seat 220, and a static ring 240 is slidably connected in the installation cavity 221. At the bottom of the installation cavity 221, a number of equally spaced pressing springs 260 are fixedly installed, and the other end of the pressing spring 260 is fixedly connected to the static ring 240. On the inner wall of the installation cavity 221, a sliding groove 222 is opened. A sliding bracket 250 is fixedly sleeved on the outer wall of the static ring 240, and the sliding bracket 250 is located inside the sliding groove 222.

[0031] When installing the static ring 240, insert the sliding bracket 250 into the sliding groove 222 to position the static ring 240, thus facilitating the installation of the static ring 240. At the same time, the sliding bracket 250 can slide inside the sliding groove 222, so that while the static ring 240 and the moving ring 280 are closely attached under the action of the pressing spring 260, it will not be too tight to affect the rotation of the moving ring 280.

[0032] Please refer particularly to Figure 1-3 As shown, a limiting groove 130 is opened on the outer wall of the shaft sleeve 110. Two moving ring fixing seats 270 are located inside the limiting groove 130. On one side of the moving ring fixing seat 270, there is a moving ring 280. On the side of the moving ring 280 close to the moving ring fixing seat 270, a positioning ring 281 is fixedly connected, and the moving ring fixing seat 270 is fixedly connected to the positioning ring 281 on the moving ring 280 through a fixing bolt 290. The side of the moving ring 280 away from the moving ring fixing seat 270 is closely attached to one side of the static ring 240. The static ring fixing seat 220 is fixedly connected to the gland 210 through a number of anti-rotation pins 230.

[0033] When installing the moving ring fixing seat 270, insert the moving ring fixing seat 270 into the limiting groove 130 to position the moving ring fixing seat 270, thus facilitating the installation of the moving ring fixing seat 270. At the same time, fix the moving ring 280 and the moving ring fixing seat 270 through the fixing bolt 290. The anti-rotation pins 230 can fix the static ring fixing seat 220 to prevent the static ring fixing seat 220 from rotating with the rotation of the moving ring 280 when the moving ring 280 and the static ring 240 are closely attached.

[0034] Please refer specifically to Figure 3 As shown, a sealing ring 120 is installed at the connection between the bushing 110 and the rotating shaft body 100.

[0035] The sealing ring 120 seals the connection between the bushing 110 and the rotating shaft body 100 to prevent impurity leakage and dripping.

[0036] During use, when it is necessary to remove the moving ring fixing seat 270, the staff pulls the pull handles 380 at the upper and lower ends of the moving ring fixing seat 270, thereby driving the connecting rod 370 and the trapezoidal slider 360 to move away from the slot 340. At this time, the limiting spring 390 is compressed. When the trapezoidal slider 360 completely moves into the moving slot 350, the L-shaped insertion rod 320 loses the limitation of the trapezoidal slider 360, so that the two semi-circular moving ring fixing seats 270 are separated and removed from the limiting slot 130, making the removal of the moving ring fixing seat 270 more convenient and time-saving. At the same time, when it is necessary to install the two moving ring fixing seats 270, align the L-shaped insertion rod 320 with the slot 340 and insert it therein. The L-shaped insertion rod 320 will squeeze the trapezoidal slider 360 and the limiting spring 390 to move into the moving slot 350. When the L-shaped insertion rod 320 is completely inserted to the bottom of the slot 340, the limiting spring 390 uses its own elastic force to push the trapezoidal slider 360 above the L-shaped insertion rod 320 to complete the limiting fixation. Its installation is also convenient, improving the installation efficiency of the staff. The parts not involved in this device are the same as or can be implemented using the prior art.

[0037] Although the embodiments of the present invention have been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A back-to-back integrated mechanical seal drive device, comprising a rotating shaft main body (100), characterized in that: The outer wall of the rotating shaft body (100) is fixedly sleeved with a shaft sleeve (110), and a connecting component (200) is sleeved on the outer wall of the shaft sleeve (110). The connecting component (200) includes two semi-circular moving ring fixing seats (270) sleeved on the outer wall of the shaft sleeve (110), and a fixing component (300) is provided at both the upper and lower ends of the two moving ring fixing seats (270); The two fixing components (300) include a first fixing seat (310) fixedly installed at the upper and lower ends of one of the moving ring fixing seats (270). A L-shaped insertion rod (320) is fixedly installed on one side of the first fixing seat (310). A second fixing seat (330) is fixedly installed at the upper and lower ends of the other moving ring fixing seat (270). A slot (340) matching the L-shaped insertion rod (320) is opened on one side of the second fixing seat (330) close to the first fixing seat (310). The L-shaped insertion rod (320) is inserted into the slot (340). An activity slot (350) is opened on one side inside the slot (340). A trapezoidal slider (360) is slidably connected in the activity slot (350). One side of the trapezoidal slider (360) is fixedly connected with a connecting rod (370). The other end of the connecting rod (370) penetrates and extends to the outside of the second fixing seat (330) and is fixedly installed with a pulling handle (380). A limiting spring (390) is sleeved on the outer wall of the connecting rod (370). One end of the limiting spring (390) is fixedly connected with one side of the trapezoidal slider (360), and the other end is fixedly connected with one side of the activity slot (350) away from the slot (340).

2. The back-to-back integrated mechanical seal drive device according to claim 1, characterized in that: One end of the shaft sleeve (110) is fixedly sleeved with a gland (210) on the outer wall of the rotating shaft body (100). A static ring fixing seat (220) is fixedly connected to one side of the gland (210) close to the moving ring fixing seat (270). An installation cavity (221) is opened in the static ring fixing seat (220), and a static ring (240) is slidably connected in the installation cavity (221).

3. A back-to-back integrated mechanical seal drive device according to claim 2, characterized in that: A number of equally spaced pressing springs (260) are fixedly installed at the bottom of the installation cavity (221). The other end of the pressing spring (260) is fixedly connected with the static ring (240).

4. A back-to-back integrated mechanical seal drive device according to claim 2, characterized in that: A sliding slot (222) is opened on the inner wall of the installation cavity (221). A sliding bracket (250) is fixedly sleeved on the outer wall of the static ring (240), and the sliding bracket (250) is located inside the sliding slot (222).

5. A back-to-back integrated mechanical seal drive device according to claim 1, characterized in that: A limiting slot (130) is opened on the outer wall of the shaft sleeve (110). The two moving ring fixing seats (270) are located inside the limiting slot (130). A moving ring (280) is provided on one side of the moving ring fixing seat (270). A positioning ring (281) is fixedly connected to one side of the moving ring (280) close to the moving ring fixing seat (270). The moving ring fixing seat (270) is fixedly connected with the positioning ring (281) on the moving ring (280) through a fixing bolt (290). One side of the moving ring (280) away from the moving ring fixing seat (270) is in close contact with one side of the static ring (240).

6. A back-to-back integrated mechanical seal drive device according to claim 2, characterized in that: The stationary ring fixing seat (220) is fixedly connected to the gland (210) through a plurality of groups of anti-rotation pins (230).

7. A back-to-back integrated mechanical seal drive device according to claim 1, characterized in that: A sealing ring (120) is installed at the connection between the shaft sleeve (110) and the rotating shaft main body (100).

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