CN114909303A

CN114909303A - Double-sealed vacuum pump cover structure

Info

Publication number: CN114909303A
Application number: CN202210623814.5A
Authority: CN
Inventors: 张健; 刘斌; 归艳艳
Original assignee: Tianjin Baike Energy Equipment Co ltd
Current assignee: Tianjin Baike Energy Equipment Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-08-16

Abstract

The invention relates to the field of pump covers. The invention discloses a double-sealed vacuum pump cover structure, which aims to solve the problems that after the device is disassembled and fixed for many times, gaps are easy to exist among the devices, and the sealing performance of the devices is influenced; the pump body is dismantled and need be unscrewed a plurality of bolts when maintaining, and it is troublesome to dismantle, and the laminating degree of sealing washer and pump cover contact need be guaranteed to the device when installing, and need every assurance bolt as far as possible and twist the unanimity of the screw thread degree of depth. The invention is composed of a sealing mechanism and a fixing mechanism. The device inserts the inner tube in the inboard of casing, then makes the first sealing washer of inner tube side contradict with the side of arc wall, seals the place of inner tube and arc wall contact, then with two arc cardboard amalgamations together, then rotates forked tail nut and makes two arc cardboards tighten up gradually, makes in arc rubber circle deformation and extrudees the arc wall, seals two arc wall junctions, carries out secondary seal's effect to the device.

Description

Double-sealed vacuum pump cover structure

Technical Field

The invention relates to the field of pump covers, in particular to a double-seal vacuum pump cover structure.

Background

Traditional roots vacuum pump's pump cover seal adopts the piston ring to support seal structure, this kind of seal structure is dismantling and fixing the back many times, there is the clearance easily between the device, in addition after the long-time operation of pump, can lead to the piston ring wearing and tearing to further increase the clearance, influence the leakproofness of device, and the device passes through bolt isotructure and fixes the pump cover on the pump body, need unscrew a plurality of bolts when dismantling the maintenance to the pump body, it is troublesome to dismantle, the laminating degree of sealing washer and pump cover contact need be guaranteed to current device when installing, and still need every assurance bolt as far as possible and twist the unanimity of the screw depth, with the leakproofness of assurance device, the operation is comparatively troublesome.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a double-seal vacuum pump cover structure, which solves the problem that after the device is disassembled and fixed for many times, gaps are easy to exist among the devices, and in addition, after the pump runs for a long time, the abrasion of piston rings further increases the gaps, so that the sealing performance of the device is influenced; the device passes through the bolt isotructure and fixes the pump cover on the pump body, need unscrew a plurality of bolts when dismantling the maintenance to the pump body, and it is troublesome to dismantle, and current device need guarantee the laminating degree of sealing washer and pump cover contact when installing, and still need every assurance bolt as far as possible and twist the unanimity of the screw thread degree of depth to guarantee the leakproofness of device, operate comparatively troublesome problem.

In order to realize the purpose, the invention is realized by the following technical scheme: the utility model provides a double containment vacuum pump cover structure, includes the motor, the casing has been cup jointed in the side activity of motor axis of rotation, the left end of casing and the right side fixed connection of motor, the fixed grafting of top surface of casing has the connecting pipe, the fixed grafting of inside of casing has the pipe, annular inclined plane has been seted up to the side of pipe, the fixed impeller that has cup jointed in motor axis of rotation one end, the fixed annular arch that has cup jointed in side of casing, sealing mechanism has been cup jointed in the right-hand member activity of casing, the side fixedly connected with fixed establishment of casing.

Preferably, sealing mechanism includes the inner tube, the side of inner tube and the inner wall sliding connection of casing, the left end of inner tube bonds and has first sealing washer, the side and the annular inclined plane of first sealing washer are contradicted, the right-hand member fixedly connected with lid of inner tube, the left side fixedly connected with outer tube of lid, the inboard activity of outer tube is cup jointed on the side of casing, the fixed hollow disc that has cup jointed in side of outer tube, the left side and the bellied right side of annular of hollow disc are contradicted, the arc wall has all been seted up to one side that hollow disc and annular are protruding relative.

Preferably, fixed establishment includes the montant, the top of montant is fixed on the side of casing, the bottom on montant right side is rotated and is connected with the bull stick, the side of bull stick articulates there are two arc-shaped cardboard, two the equal fixedly connected with C shaped plate in side of arc-shaped cardboard, front side the inboard of C shaped plate articulates there is the screw rod, the inboard and threaded connection that the rear end of screw rod extends to rear side C shaped plate has the forked tail nut, the inboard bonding of arc-shaped cardboard has the arc rubber circle, the side of arc rubber circle is contradicted with the inner wall of arc wall, the right side fixedly connected with swash plate of arc-shaped cardboard, the side of swash plate is contradicted with the side of hollow disc.

Preferably, the diameter of the outer ring of the hollow disc is equal to the diameter of the outer ring of the annular bulge, and the central axis of the hollow disc is coaxial with the central axis of the annular bulge.

Preferably, the number of the arc-shaped rubber rings is two, and the two ends of the two arc-shaped rubber rings are in one-to-one correspondence and mutually abutted.

Preferably, the vertical rod and the rotating rod are perpendicular to each other.

Preferably, the shape of the tangent plane of the arc-shaped clamping plate is L-shaped, and the inner side of the arc-shaped clamping plate is abutted against the outer side of the annular protrusion.

Preferably, the quantity of swash plate is four, and four swash plates equidistance are the annular distribution, the swash plate is kept away from one side of arc cardboard for the arc.

Advantageous effects

The invention provides a double-sealed vacuum pump cover structure. Compared with the prior art, the method has the following beneficial effects:

(1) this double containment's vacuum pump cover structure is through inserting the inner tube in the inboard of casing, and then make the outer tube parcel in the outside of casing, then make the first sealing washer of inner tube side face contradict with the side of arc wall, seal the place of inner tube and arc wall contact, then put two arc cardboard amalgamations together, then rotate forked tail nut and make two arc cardboards tighten up gradually, make arc rubber circle deformation and extrude in the arc wall, seal two arc wall junctions, reach and carry out secondary seal's effect to the device, sealed effect is better.

(2) This double containment's vacuum pump cover structure makes two arc cardboards loosen gradually through rotating forked tail nut, then opens the arc cardboard, makes the arc rubber circle shift out from the arc wall in, and makes swash plate and hollow disc separation, takes the lid out, accomplishes the dismantlement to the device.

(3) This double containment's vacuum pump cover structure is through inserting the inner tube in the inboard of casing, then with two arc cardboard amalgamations together, then rotate forked tail nut and make two arc cardboards tighten up gradually, and then make the interval between annular arch and the hollow disc diminish gradually to extrusion arc rubber circle has both accomplished the installation to the lid, and easy operation is convenient, and the leakproofness is good.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a sectional view of a partially expanded perspective structure of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a partial perspective sectional view of the present invention;

fig. 5 is an enlarged view of the structure at B in fig. 4 according to the present invention.

In the figure: 1. a motor; 2. a housing; 3. a connecting pipe; 4. a circular tube; 5. an impeller; 6. a sealing mechanism; 61. an inner tube; 62. a first seal ring; 63. a cover body; 64. an outer tube; 65. a hollow disc; 66. an arc-shaped slot; 7. a fixing mechanism; 71. a vertical rod; 72. a rotating rod; 73. an arc-shaped clamping plate; 74. an arc-shaped rubber ring; 75. a sloping plate; 76. a C-shaped plate; 77. a screw; 78. a dovetail nut; 8. an annular bevel; 9. an annular protrusion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a dual-sealed vacuum pump cover structure includes a motor 1, a housing 2 is movably sleeved on a side surface of a rotation shaft of the motor 1, a left end of the housing 2 is fixedly connected with a right side of the motor 1, a connecting pipe 3 is fixedly inserted on a top surface of the housing 2, a round pipe 4 is fixedly inserted inside the housing 2, an annular inclined surface 8 is disposed on a side surface of the round pipe 4, an impeller 5 is fixedly sleeved on one end of the rotation shaft of the motor 1, an annular protrusion 9 is fixedly sleeved on a side surface of the housing 2, a sealing mechanism 6 is movably sleeved on a right end of the housing 2, and a fixing mechanism 7 is fixedly connected to a side surface of the housing 2.

In the invention, the sealing mechanism 6 comprises an inner tube 61, the side surface of the inner tube 61 is connected with the inner wall of the shell 2 in a sliding way, the left end of the inner tube 61 is bonded with a first sealing ring 62, the side surface of the first sealing ring 62 is abutted against the annular inclined plane 8, the right end of the inner tube 61 is fixedly connected with a cover body 63, the left side of the cover body 63 is fixedly connected with an outer tube 64, the inner side of the outer tube 64 is movably sleeved on the side surface of the shell 2, the side surface of the outer tube 64 is fixedly sleeved with a hollow disc 65, the left side of the hollow disc 65 is abutted against the right side of the annular bulge 9, one side of the hollow disc 65 opposite to the annular bulge 9 is provided with an arc-shaped groove 66, by inserting the inner tube 61 inside the housing 2, the outer tube 64 is forced to wrap around the outside of the housing 2, the first sealing ring 62 on the side of the inner tube 61 is then urged against the side of the arcuate groove 66 to seal the place where the inner tube 61 contacts the arcuate groove 66.

In the invention, the fixing mechanism 7 comprises a vertical rod 71, the top end of the vertical rod 71 is fixed on the side surface of the shell 2, the bottom of the right side of the vertical rod 71 is rotatably connected with a rotating rod 72, the side surface of the rotating rod 72 is hinged with two arc-shaped clamping plates 73, the side surfaces of the two arc-shaped clamping plates 73 are both fixedly connected with a C-shaped plate 76, the inner side of the front C-shaped plate 76 is hinged with a screw 77, the rear end of the screw 77 extends to the inner side of the rear C-shaped plate 76 and is in threaded connection with a dovetail nut 78, the inner side of the arc-shaped clamping plate 73 is bonded with an arc-shaped rubber ring 74, the side surface of the arc-shaped rubber ring 74 is abutted against the inner wall of the arc-shaped groove 66, the right side of the arc-shaped clamping plate 73 is fixedly connected with an inclined plate 75, the side surface of the inclined plate 75 is abutted against the side surface of the hollow disc 65, the two arc-shaped clamping plates 73 are spliced together by abutting the first sealing ring 62 against the side surface of the rear arc-shaped groove 66, then the dovetail nut 78 is rotated to gradually tighten the two arc-shaped clamping plates 73, the arc-shaped rubber ring 74 is enabled to deform and extrude into the arc-shaped groove 66, the device is sealed for the second time, and then the hollow disc 65 is limited by the inclined plate 75 on the side surface of the closed arc-shaped clamping plate 73, so that the installation and the sealing of the device are completed. The side of arc rubber circle 74 and the outside of outer tube 64 all are provided with the heat preservation, guarantee the leakproofness of the protruding 9 of annular and hollow disc 65 junction through arc rubber circle 74 pressurized deformation, prevent that gaseous protruding 9 of 2 annular of casing and hollow disc 65's junction from discharging or getting into, the invariant of the interior temperature when guaranteeing the device operation, then the heat preservation of cooperation arc rubber circle 74 side and the heat preservation in the outer tube 64 outside keep warm to the device, the constancy of the interior temperature of casing 2 when guaranteeing the device evacuation.

In the invention, the diameter of the outer ring of the hollow disc 65 is equal to that of the outer ring of the annular bulge 9, and the central axis of the hollow disc 65 is coaxial with that of the annular bulge 9, so that the arc-shaped clamping plate 73 can conveniently extrude the arc-shaped rubber ring 74 into the arc-shaped groove 66 passing through the side surfaces of the hollow disc 65 and the annular bulge 9, and the sealing property of the device is ensured.

In the invention, the number of the arc-shaped rubber rings 74 is two, and the two ends of the two arc-shaped rubber rings 74 are in one-to-one correspondence and mutually abutted, so that the two arc-shaped rubber rings 74 can be completely attached to the inner wall of the arc-shaped groove 66.

In the present invention, the vertical rod 71 and the rotating rod 72 are perpendicular to each other.

In the invention, the section of the arc-shaped clamping plate 73 is L-shaped, and the inner side of the arc-shaped clamping plate 73 is abutted against the outer side of the annular protrusion 9, so that the fitting degree between the arc-shaped clamping plate 73 and the annular protrusion 9 is ensured.

In the invention, the number of the sloping plates 75 is four, the four sloping plates 75 are distributed annularly at equal intervals, one side of each sloping plate 75, which is far away from the arc-shaped clamping plate 73, is arc-shaped, and the sloping plates 75 are matched with the arc-shaped rubber rings 74 to seal the contact positions of the two arc-shaped grooves 66, and simultaneously, the hollow circular disc 65 is fixed by the sloping plates 75.

During the use, through inserting inner tube 61 in the inboard of casing 2, and then make outer tube 64 parcel in the outside of casing 2, then make the first sealing washer 62 of inner tube 61 side contradict with the side of arc wall 66, seal the place of inner tube 61 and arc wall 66 contact, then put together two arc cardboard 73, then rotate forked tail nut 78 and make two arc cardboard 73 tighten up gradually, make arc rubber circle 74 deformation and extrude in the arc wall 66, seal two arc wall 66 junctions, then restrict hollow disc 65 through swash plate 75 of closed back arc cardboard 73 side, accomplish the installation and the sealing of device.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum pump cover structure of double containment, includes motor (1), its characterized in that: casing (2) have been cup jointed in the side activity of motor (1) axis of rotation, the left end of casing (2) and the right side fixed connection of motor (1), the fixed grafting of top surface of casing (2) has connecting pipe (3), the inside of casing (2) is fixed to be inserted and is had pipe (4), annular inclined plane (8) have been seted up to the side of pipe (4), motor (1) axis of rotation one end is fixed to be cup jointed impeller (5), the fixed annular arch (9) that has cup jointed in side of casing (2), sealing mechanism (6) have been cup jointed in the right-hand member activity of casing (2), the side fixedly connected with fixed establishment (7) of casing (2).

2. A dual sealed vacuum pump cover structure according to claim 1, wherein: sealing mechanism (6) include inner tube (61), the side of inner tube (61) and the inner wall sliding connection of casing (2), the left end of inner tube (61) bonds and has first sealing washer (62), the side and the annular inclined plane (8) of first sealing washer (62) are contradicted, the right-hand member fixedly connected with lid (63) of inner tube (61), the left side fixedly connected with outer tube (64) of lid (63), the inboard activity of outer tube (64) is cup jointed on the side of casing (2), hollow disc (65) have been fixed to be cup jointed in the side of outer tube (64), the left side of hollow disc (65) is contradicted with the right side of annular bulge (9), arc wall (66) have all been seted up to one side that hollow disc (65) and annular bulge (9) are relative.

3. A dual sealed vacuum pump cover structure according to claim 2, wherein: the fixing mechanism (7) comprises a vertical rod (71), the top end of the vertical rod (71) is fixed on the side surface of the shell (2), the bottom of the right side of the vertical rod (71) is rotatably connected with a rotating rod (72), the side surface of the rotating rod (72) is hinged with two arc-shaped clamping plates (73), the side surfaces of the two arc-shaped clamping plates (73) are both fixedly connected with a C-shaped plate (76), the inner side of the C-shaped plate (76) at the front side is hinged with a screw rod (77), the rear end of the screw rod (77) extends to the inner side of the rear side C-shaped plate (76) and is in threaded connection with a dovetail nut (78), an arc-shaped rubber ring (74) is bonded on the inner side of the arc-shaped clamping plate (73), the side surface of the arc-shaped rubber ring (74) is abutted against the inner wall of the arc-shaped groove (66), the right side of the arc-shaped clamping plate (73) is fixedly connected with an inclined plate (75), and the side surface of the inclined plate (75) is abutted against the side surface of the hollow disc (65).

4. A dual sealed vacuum pump cover structure according to claim 2, wherein: the diameter of the outer ring of the hollow disc (65) is equal to that of the outer ring of the annular bulge (9), and the central axis of the hollow disc (65) is coaxial with that of the annular bulge (9).

5. A dual sealed vacuum pump cover structure according to claim 3, wherein: the number of the arc-shaped rubber rings (74) is two, and the two ends of the two arc-shaped rubber rings (74) are in one-to-one correspondence and mutually abutted.

6. A dual sealed vacuum pump cover structure according to claim 3, wherein: the vertical rod (71) is perpendicular to the rotating rod (72).

7. A dual sealed vacuum pump cover structure according to claim 3, wherein: the shape of the section of the arc-shaped clamping plate (73) is L-shaped, and the inner side of the arc-shaped clamping plate (73) is abutted against the outer side of the annular protrusion (9).

8. A dual sealed vacuum pump cover structure according to claim 3, wherein: the quantity of swash plate (75) is four, and four swash plate (75) equidistance are the annular distribution, one side that arc cardboard (73) was kept away from to swash plate (75) is the arc.