CN219639059U

CN219639059U - Vacuum pump shaft end sealing mechanism

Info

Publication number: CN219639059U
Application number: CN202320573456.1U
Authority: CN
Inventors: 李茂强
Original assignee: Shenzhen Guangchangyuan Electromechanical Equipment Co ltd
Current assignee: Shenzhen Guangchangyuan Electromechanical Equipment Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-09-05
Anticipated expiration: 2033-03-22

Abstract

The utility model relates to the technical field of vacuum pump shaft end sealing structures, in particular to a vacuum pump shaft end sealing mechanism which comprises a main shaft, wherein a front cover is sleeved outside the main shaft, a plugging part is arranged inside the front cover, the front cover comprises a lower cover shell, the top end of the lower cover shell is connected with an upper cover shell through a bolt, a shaft seal is inserted at the center position of the left sides of the lower cover shell and the upper cover shell, a leakage-proof part is arranged on the left side of the shaft seal, a pump body is arranged on the right side of the lower cover shell, the pump body comprises a pump shell, and a rubber sheet is embedded inside the right side of the pump shell. According to the utility model, the baffle disc is fixed on the inner wall of the front cover, so that the sealing disc is embedded in the baffle disc, the cavities of the lower cover shell and the upper cover shell are closed, and meanwhile, the rubber sheet is embedded on the right side of the pump shell, so that the rubber sheet can be matched with the sealing disc, the front and rear sealing effect of the main shaft is improved, the leakage of gear pump vacuum oil on the surface of the main shaft at the shaft seal is avoided, and the sealing performance in the front cover is ensured to a certain extent.

Description

Vacuum pump shaft end sealing mechanism

Technical Field

The utility model relates to the technical field of vacuum pump shaft end sealing structures, in particular to a vacuum pump shaft end sealing mechanism.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping air from a pumped container by using a mechanical, physical, chemical or physicochemical method, and is widely applied to the fields of metallurgy, electronic coating or chemical industry at present.

In the prior art, as negative pressure is arranged in the vacuum pump, the pump body and the front rotor spindle are provided with shaft seals so as to avoid liquid leakage in the vacuum pump body, but along with high-speed operation of the vacuum pump, the front rotor spindle is continuously rubbed with the shaft seals, after long-term use, the contact part of the shaft seals and the spindle can be worn, hidden danger of leakage of vacuum oil in the pump at the shaft seals exists, the sealing performance of the vacuum pump is reduced, the effect of the reduction of the vacuum performance is caused, and the service life of equipment is influenced. There is a need for a vacuum pump shaft end sealing mechanism that addresses the above-described problems.

Disclosure of Invention

The present utility model is directed to solving the problems set forth in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a vacuum pump shaft end sealing mechanism, includes the main shaft, main shaft outside cover is equipped with the protecgulum, just the inside shutoff part that is provided with of protecgulum, the protecgulum includes the lower cover shell, there is the upper cover shell lower cover shell top through bolted connection, lower cover shell is inserted with upper cover shell left side central point department and is equipped with the bearing seal, just the bearing seal left side is provided with leak protection part, lower cover shell right side is provided with the pump body, the pump body includes the pump case, the inside rubber sheet that has inlayed in the pump case right side.

Preferably, the side of the top end of the lower cover shell is connected with a butt joint block, and the limit groove of the butt joint block is embedded in the side of the upper cover shell, and the butt joint block is inserted into the limit groove of the upper cover shell, so that the butt joint convenience of the lower cover shell and the upper cover shell is ensured.

Preferably, the plugging part comprises a blocking disc, a connecting frame is connected to the outer side of the blocking disc in a surrounding mode, the connecting frame is fixed to the inner wall of the lower cover shell, a sealing disc is embedded in the left side of the blocking disc and is fixed to the inner portion of the lower cover shell through the connecting frame, the sealing disc is embedded in the blocking disc, and the sealing property of the sealing disc and the blocking disc to the shaft end of the main shaft is guaranteed after the sealing disc and the blocking disc are matched.

Preferably, the baffle disc inner wall symmetry is connected with two sleeve plates, sealing disc inner wall symmetry is connected with the rubber piece, just the rubber piece inserts and establishes inside the sleeve plate, and the rubber piece can insert and establish inside the sleeve plate to restrict sealing disc.

Preferably, the baffle inner wall is connected with the baffle, just the baffle comprises rod end and ball end, the annular of the ball end looks adaptation of baffle has been seted up to the sealing disc inner wall, and the annular of sealing disc guides with the ball end of baffle, and the convenience sealing disc is adjusted the post-setting and is adjusted in the baffle inside.

Preferably, the leakage-proof component comprises a fastening disc, the right side of the fastening disc is symmetrically connected with a positioning shaft, the positioning shaft is inserted into the shaft seal through a positioning groove, the center position of the left side of the positioning shaft is inserted into the shaft seal through a bolt to be fixed in a locking manner, the positioning shaft is inserted into a positioning hole of the shaft seal, and the positioning shaft is convenient to position and install in cooperation with the shaft seal.

Preferably, the right side of the buckling disc is connected with a plugboard, the plugboard is inserted into the shaft seal through a groove, a sealing ring is connected to the center position of the left side of the buckling disc, the sealing ring is sleeved outside the main shaft, and the plugboard is inserted into the inner wall of the shaft seal, so that the shaft seal and the shaft hole of the buckling disc are limited.

The utility model has at least the following beneficial effects:

1. through setting up the pump body and plugging member, realize the inside closure of protecgulum, compare in traditional structure, this device is fixed at the protecgulum inner wall through keeping off the dish, makes the sealing disk embedded inside keeping off the dish, seals the cavity of lower cover shell and upper cover shell, simultaneously, with the rubber sheet embedded in the pump case right side, makes the rubber sheet with can improve the front and back closure effect of main shaft with sealing disk cooperation, avoid the gear pump vacuum oil on main shaft surface to leak in shaft seal department, guaranteed the inside sealing performance of protecgulum to a certain extent.

2. Through setting up leak protection part, further improve the sealed effect of bearing seal, this device inserts through the picture peg and establishes in the bearing seal left side, makes the locating shaft embedded inside the through-hole of bearing seal to make the sealing ring snare establish in the axle head outside of main shaft, further improved the sealed effect between main shaft and the bearing seal, simultaneously through the pull setting of lock joint dish, also conveniently disassemble the change to the built-in sealing washer in lock joint dish inner wall left side.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the external structure of a vacuum pump shaft end sealing mechanism according to the present utility model;

FIG. 2 is a schematic diagram of the internal structure of a vacuum pump shaft end sealing mechanism according to the present utility model;

FIG. 3 is a schematic diagram of a three-dimensional burst of a plugging member in a vacuum pump shaft end sealing mechanism according to the present utility model;

FIG. 4 is a schematic diagram of a right-side view of a three-dimensional burst of a plugging member in a vacuum pump shaft end sealing mechanism according to the present utility model;

fig. 5 is a schematic diagram of a three-dimensional burst of a leak-proof component in a vacuum pump shaft end sealing mechanism according to the present utility model.

In the figure: 1. a main shaft; 2. a front cover; 21. a lower cover shell; 22. a butt joint block; 23. an upper cover case; 3. a pump body; 31. a pump housing; 32. a rubber sheet; 4. a shaft seal; 5. a blocking member; 51. a baffle disc; 52. a connecting frame; 53. a guide plate; 54. a sleeve plate; 55. a rubber block; 56. a sealing plate; 6. a leakage preventing member; 61. a fastening disc; 62. a seal ring; 63. inserting plate; 64. and positioning the shaft.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-5, a vacuum pump shaft end sealing mechanism comprises a main shaft 1, a front cover 2 is sleeved outside the main shaft 1, a plugging member 5 is arranged inside the front cover 2, the front cover 2 comprises a lower cover shell 21, an upper cover shell 23 is connected to the top end of the lower cover shell 21 through bolts, a shaft seal 4 is inserted into the central position of the left side of the lower cover shell 21 and the central position of the left side of the upper cover shell 23, a leakage preventing member 6 is arranged on the left side of the shaft seal 4, a pump body 3 is arranged on the right side of the lower cover shell 21, the pump body 3 comprises a pump shell 31, and a rubber sheet 32 is embedded inside the right side of the pump shell 31.

The side of the top end of the lower cover shell 21 is connected with a butt joint block 22, and a limit groove of the butt joint block 22 is embedded in the side of the upper cover shell 23.

The blocking part 5 comprises a blocking disc 51, a connecting frame 52 is connected to the outer side of the blocking disc 51 in a surrounding mode, the connecting frame 52 is fixed to the inner wall of the lower cover shell 21, and a sealing disc 56 is embedded in the left side of the blocking disc 51.

The baffle plate 51 is symmetrically connected with two sleeve plates 54 on the inner wall, the sealing plate 56 is symmetrically connected with a rubber block 55 on the inner wall, and the rubber block 55 is inserted into the sleeve plates 54.

The baffle plate 51 is connected with a guide plate 53 on the inner wall, the guide plate 53 consists of a rod end and a ball end, and a ring groove matched with the ball end of the guide plate 53 is formed on the inner wall of the sealing plate 56.

The leakage-proof component 6 comprises a buckling disc 61, the right side of the buckling disc 61 is symmetrically connected with a positioning shaft 64, the positioning shaft 64 is inserted into the shaft seal 4 through a positioning groove, and the center position of the left side of the positioning shaft 64 is inserted into the shaft seal 4 to be locked and fixed after being penetrated through by a bolt.

The right side of the buckling disc 61 is connected with a plugboard 63, the plugboard 63 is inserted into the shaft seal 4 through a groove, the center position of the left side of the buckling disc 61 is connected with a sealing ring 62, and the sealing ring 62 is sleeved outside the main shaft 1.

When lower cover shell 21 and upper cover shell 23 dock, the accessible is inserted and is established in the spacing groove inside at upper cover shell 23 to splicing block 22, the convenience of lower cover shell 21 and upper cover shell 23 dock has been guaranteed, simultaneously butt joint between lower cover shell 21 and the upper cover shell 23 to splicing block 22 can be guided, the regularity of lower cover shell 21 and upper cover shell 23 butt joint limit side has been guaranteed, fix inside lower cover shell 21 through link 52, and make sealing plate 56 embedded inside fender disc 51, the leakproofness to main shaft 1 axle head after having guaranteed sealing plate 56 and fender disc 51 cooperation, avoid the axle head of main shaft 1 to appear the oil stain omission, after sealing plate 56 and fender disc 51 butt joint, thereby the sealing plate 56 is inside to restrict to sealing plate 56, avoid sealing plate 56 embedded inside to appear the circumstances of rotating the loose, after sealing plate 56 is inside fender disc 51, the annular groove end of sealing plate 56 guides with baffle 53, the ball is placed inside conveniently sealing plate 56 is adjusted, make things convenient for sealing plate 56 to adjust the piece and is embedded inside fender disc 51, make sealing plate 56 and set up at the same time the bearing plate 64 can carry out the locating hole at the inner wall of bearing plate 64, the jack of bearing plate 61 can be located at the inner wall of bearing plate 64, the jack 4 is located at the jack 4, the same time, the bearing seal 4 can be firmly is located at the jack 4, the jack 4 is located at the jack 4, the jack is located at the jack hole 4, the jack 1, the jack is located at the jack 4, and can be located at the jack hole, and the jack is located at the jack hole, and the inside 4, and can be located at the jack hole is located at the inside.

Working principle: according to fig. 1 and 2, the main shaft 1 is inserted in the center position of the lower cover shell 21 and the baffle disc 51, the rubber block 55 is displaced, the rubber block 55 can move on the surface of the main shaft 1, the rubber block 55 can be inserted in the baffle disc 51, the rubber block 55 is rotated, the sliding groove in the rubber block 55 is matched with the ball end of the guide plate 53, the rubber block 55 on the inner wall of the rubber block 55 is correspondingly matched with the sleeve plate 54, the rubber block 55 is pressed and embedded in the baffle disc 51, the shaft seal 4 is placed between the lower cover shell 21 and the upper cover shell 23, the right side of the shaft seal 4 is abutted against the outer side of the rubber block 55, the lower cover shell 21 and the upper cover shell 23 are fixed through bolts, and the right side of the upper cover shell 23 is abutted with the pump shell 31 through bolts;

next, as shown in fig. 5, the worker inserts the positioning shaft 64 into the shaft seal 4 by putting the lock plate 61 on the outside of the main shaft 1, inserts the positioning shaft 64 into the corresponding hole of the shaft seal 4, and fixes the shaft by inserting the bolt.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a vacuum pump shaft end sealing mechanism, includes main shaft (1), its characterized in that, main shaft (1) outside cover is equipped with protecgulum (2), just protecgulum (2) inside is provided with plugging member (5), protecgulum (2) are including lower cover shell (21), there is upper cover shell (23) on lower cover shell (21) top through bolted connection, lower cover shell (21) are inserted with upper cover shell (23) left side central point department and are equipped with bearing seal (4), just bearing seal (4) left side is provided with leak protection part (6), lower cover shell (21) right side is provided with pump body (3), pump body (3) are including pump case (31), inside embedded rubber piece (32) in pump case (31) right side.

2. The vacuum pump shaft end sealing mechanism according to claim 1, wherein a butt joint block (22) is connected to the side of the top end of the lower cover shell (21), and a limit groove of the butt joint block (22) is embedded in the side of the upper cover shell (23).

3. The vacuum pump shaft end sealing mechanism according to claim 1, wherein the blocking part (5) comprises a blocking disc (51), a connecting frame (52) is connected to the outer side of the blocking disc (51) in a surrounding mode, the connecting frame (52) is fixed to the inner wall of the lower cover shell (21), and a sealing disc (56) is embedded in the left side of the blocking disc (51).

4. A vacuum pump shaft end sealing mechanism according to claim 3, wherein the inner wall of the baffle disc (51) is symmetrically connected with two sleeve plates (54), the inner wall of the sealing disc (56) is symmetrically connected with rubber blocks (55), and the rubber blocks (55) are inserted into the sleeve plates (54).

5. The vacuum pump shaft end sealing mechanism according to claim 4, wherein a guide plate (53) is connected to the inner wall of the baffle disc (51), the guide plate (53) is composed of a rod end and a ball end, and a ring groove matched with the ball end of the guide plate (53) is formed in the inner wall of the sealing disc (56).

6. The vacuum pump shaft end sealing mechanism according to claim 1, wherein the leakage preventing component (6) comprises a buckling disc (61), a positioning shaft (64) is symmetrically connected to the right side of the buckling disc (61), the positioning shaft (64) is inserted into the shaft seal (4) through a positioning groove, and the center position of the left side of the positioning shaft (64) is inserted into the shaft seal (4) for locking and fixing after being penetrated through by a bolt.

7. The vacuum pump shaft end sealing mechanism according to claim 6, wherein the right side of the buckling disc (61) is connected with an inserting plate (63), the inserting plate (63) is inserted into the shaft seal (4) through a groove, the center position of the left side of the buckling disc (61) is connected with a sealing ring (62), and the sealing ring (62) is sleeved outside the main shaft (1).