CN221322709U - Screw structure of dry screw vacuum pump - Google Patents
Screw structure of dry screw vacuum pump Download PDFInfo
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- CN221322709U CN221322709U CN202323063583.6U CN202323063583U CN221322709U CN 221322709 U CN221322709 U CN 221322709U CN 202323063583 U CN202323063583 U CN 202323063583U CN 221322709 U CN221322709 U CN 221322709U
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- 238000009434 installation Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 13
- 230000009471 action Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model is applicable to the technical field of dry screw vacuum pumps, and provides a screw structure of a dry screw vacuum pump, which comprises: the two rotating shafts are provided with spiral blades with opposite directions; the installation component, it is including the mount pad of locating the pivot both ends, rotate on one of them mount pad and be equipped with two and the sleeve pipe of pivot joint, all be equipped with the gear on the sleeve pipe, all slide in the mount pad and be equipped with two initiative slide bars and two driven slide bars, all be equipped with the initiative snap ring on the initiative slide bar, all slide and be equipped with the initiative post between the initiative slide bar, all rotate between initiative post and the initiative slide bar and be equipped with first connecting rod, all be equipped with driven snap ring on the driven slide bar, driven snap ring one side all is equipped with two sliders, the slider slides and locates in the mount pad, all rotate between slider and the driven slide bar and be equipped with the second connecting rod, the both ends of pivot all are equipped with the draw-in groove. Therefore, the utility model can automatically complete locking and unlocking of the rotating shaft in the process of assembling and disassembling the mounting seat and the rotating shaft, and reduce the workload of a user.
Description
Technical Field
The utility model relates to the technical field of dry screw vacuum pumps, in particular to a screw structure of a dry screw vacuum pump.
Background
The dry screw vacuum pump is mainly applied to a high-purity vacuum process, the vacuum degree is extremely high, the screw assembly rotates in the vacuum pump working process, when the service life of the device is long, the surface of the screw assembly is worn, and the maintenance and replacement of the existing part of screw assembly are troublesome.
To above-mentioned problem, the technical staff has improved prior art, and for example the screw rod subassembly of a dry-type screw vacuum pump of publication number CN210565096U, and it includes screw rod body, two installation poles, two collar, two mounting panels and axis of rotation, the relative one end of two installation poles respectively with the left end and the right side fixed connection of screw rod body, the inside of two collar cup joints with the surface of two installation poles respectively, one side of two mounting panels is kept away from one side fixed connection of screw rod body with the collar, one side fixed connection of screw rod body is kept away from with the mounting panel to the axis of rotation, the cavity has all been seted up to the inside of two mounting panels, and the inside of two cavities all includes dismouting mechanism, and it can facilitate the use person to change the screw rod, but above-mentioned device is comparatively complicated, and the change process is comparatively loaded down with trivial details, and the use still is inconvenient.
In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.
Disclosure of utility model
The utility model aims to overcome the defects, and provides a screw structure of a dry screw vacuum pump, which is simple in structure and convenient to use, and can automatically lock and unlock a rotating shaft in the process of assembling and disassembling an installation seat and the rotating shaft, reduce the workload of a user and reduce the fault risk of the device.
In order to achieve the above object, the present utility model provides a screw structure of a dry screw vacuum pump, comprising: the two rotating shafts are provided with spiral blades with opposite directions; the installation component, it includes mount pad and sleeve pipe, the both ends of pivot are located to the mount pad, and the rotation is equipped with two sleeves on one of them mount pad, two the sleeve pipe respectively with two pivot joint, all be equipped with the gear on the sleeve pipe, all slide in the mount pad and be equipped with two initiative slide bars and two driven slide bars, all be equipped with the initiative snap ring on the initiative slide bar, all be equipped with the initiative post between the initiative slide bar, the initiative post slides and locates in the mount pad, all rotate between initiative post and the initiative slide bar and be equipped with first connecting rod, all be equipped with driven snap ring on the driven slide bar, driven snap ring keeps away from one side of initiative snap ring and all is equipped with two sliders, the slider slides and locates in the mount pad, all rotate between slider and the driven slide bar and be equipped with the second connecting rod, the both ends of pivot all are equipped with the draw-in groove.
According to the screw structure of the dry screw vacuum pump, key grooves are formed in the sleeve, and square keys are formed in one end, close to the sleeve, of the rotating shaft.
According to the screw structure of the dry screw vacuum pump, one gear is provided with the connecting shaft, and the connecting shaft is detachably connected with the driving piece.
According to the screw structure of the dry screw vacuum pump, the two driving slide bars are positioned between the two rotating shafts, and the two driven slide bars are respectively arranged at two sides of the rotating shafts.
According to the screw structure of the dry screw vacuum pump, the convex seats are arranged in the installation seats between the two rotating shafts, the driving columns are arranged in the convex seats in a sliding mode, one ends, far away from the rotating shafts, of the driving columns penetrate out of the installation seats, and the first springs are arranged between the driving columns and the installation seats.
According to the screw structure of the dry screw vacuum pump, the fixed seat is arranged between the two sliding blocks positioned at the same end of the mounting seat, and the second springs are arranged between the fixed seat and the sliding blocks.
The utility model aims to provide the device which is characterized in that the mounting seats arranged at the two ends of the rotating shaft and the driving shaft arranged on the mounting seats in a sliding manner are used for enabling the driving snap ring and the driven snap ring to synchronously move under the action of the first spring and the second spring in the dismounting and mounting processes of the mounting seats and the rotating shaft, so that the unlocking and locking of the rotating shaft are automatically completed, the adjustment mode is simple and quick, the workload of a user is reduced, the working efficiency of replacing the rotating shaft is improved, the device is simple in structure, the stability of the device is improved, and the fault risk of the device is reduced. In summary, the beneficial effects of the utility model are as follows: the locking and unlocking of the rotating shaft can be automatically completed in the mounting seat and rotating shaft dismounting process, the workload of a user is reduced, and the fault risk of the device is reduced.
Drawings
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a front cross-sectional view of the internal structure of the mount;
FIG. 3 is an enlarged schematic view of the portion A of FIG. 2;
FIG. 4 is a top cross-sectional view of the present utility model;
FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;
In the figure: the device comprises the following components of a rotating shaft 1, a spiral blade 11, a clamping groove 12, a square key 13, a mounting component 2, a mounting seat 21, a sleeve 22, a gear 221, a connecting shaft 222, a driving slide rod 23, a driving snap ring 231, a push rod 232, a driving column 24, a convex seat 241, a first connecting rod 242, a driven slide rod 25, a driven snap ring 251, a sliding block 26, a second connecting rod 261 and a fixing plate 27.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, 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 to 5, the utility model provides a screw structure of a dry screw vacuum pump, which comprises a rotating shaft 1 and an installation component 2, wherein the two rotating shafts 1 are arranged in a pump body of the dry screw vacuum pump side by side (the dry vacuum pump is a mature prior art, and is not described in the utility model), spiral blades 11 are arranged on the rotating shafts 1, the directions of the spiral blades 11 on the two rotating shafts 1 are opposite, and a small gap exists between the spiral blades 11 on the two rotating shafts 1.
Referring to fig. 1 to 5, the mounting assembly 2 includes a mounting seat 21 and a sleeve 22, both ends of the rotating shaft 1 are respectively provided with the mounting seat 21, the mounting seat 21 is respectively slidably disposed in a pump body (not shown in the drawing), two sleeves 22 are rotationally connected to a side wall of one of the mounting seats 21, gears 221 are respectively disposed on the two sleeves 22, the two gears 221 are meshed with each other, a connecting shaft 222 is disposed on one of the gears 221, a driving member (not shown in the drawing) is detachably connected to the connecting shaft 222, and the driving member can drive the connecting shaft 222 to rotate, so that the two sleeves 22 rotate synchronously and oppositely. The sleeve 22 is provided with key grooves, one end of the rotating shaft 1, which is close to the sleeve 22, is provided with square keys 13, and the square keys 13 are matched with the key grooves in a one-to-one correspondence manner, so that the sleeve 22 can drive the rotating shaft 1 to rotate.
Referring to fig. 1-5, the installation seat 21 is provided with an accommodating cavity, two driving sliding rods 23 are slidably arranged on the side wall, close to the rotating shafts 1, of the accommodating cavity, the two driving sliding rods 23 are centrally symmetrical relative to the installation seat 21, the driving sliding rods 23 are located between the two rotating shafts 1, driving clamping rings 231 are arranged on the driving sliding rods 23, and clamping grooves 12 matched with the driving clamping rings 231 are formed in two ends of the rotating shafts 1. Be equipped with a plurality of bosses 241 on holding the chamber lateral wall between two initiative slide bars 23, the sliding of boss 241 is equipped with initiative post 24, and the mount pad 21 is worn out to the one end that initiative post 24 kept away from pivot 1, is equipped with first spring (not shown in the figure) between initiative post 24 and the chamber lateral wall that holds, all rotates between initiative post 24 lateral wall and the initiative slide bar 23 and is equipped with first connecting rod 242 (i.e. the one end of first connecting rod 242 rotates and connects initiative post 24, the other end of first connecting rod 242 rotates and connects initiative slide bar 23), and when first spring is in natural state, initiative snap ring 231 does not cooperate with draw-in groove 12.
Referring to fig. 1 to 5, two driven slide bars 25 are slidably disposed on the side wall of the accommodating cavity, which is close to the rotating shaft 1, the two driven slide bars 25 are centrally symmetrical with respect to the mounting seat 21, the driven slide bars 25 are respectively located at two sides of the two rotating shafts 1, and driven snap rings 251 matched with the clamping grooves 12 are disposed on the driven slide bars 25. The side that driven slide bar 25 kept away from initiative slide bar 23 all is equipped with two sliders 26, and slider 26 all sliding connection holds the chamber lateral wall, all rotates between slider 26 and the driven slide bar 25 that is close to it and is equipped with second connecting rod 261 (that is second connecting rod 261 one end rotates and connects slider 26, and driven slide bar 25 is connected in the rotation of second connecting rod 261 other end), all is equipped with a plurality of push rods 232 with slider 26 complex on the initiative slide bar 23, and slider 26 keeps away from driven slide bar 25's one end all is equipped with the chamfer with push rod 232 complex.
Referring to fig. 1 to 5, it is preferable that a fixing plate 27 is disposed between two sliders 26 located at the same end of the mounting seat 21, the fixing plate 27 is fixedly connected with the side wall of the accommodating cavity, and second springs are disposed between the sliders 26 and the fixing plate 27, and when the second springs are in a natural state, the driven snap ring 251 is not matched with the clamping groove 12, and the second springs can provide return power for the driven snap ring 251.
Referring to fig. 1 to 5, it is preferable that the driving snap ring 231 and the driven snap ring 251 are both semi-annular, and when the driving snap ring 231 and the driven snap ring 251 are engaged with the catching groove 12, the rotation of the rotation shaft 1 is ensured while the position of the rotation shaft 1 can be defined.
The utility model is implemented in the following steps: however, when the rotating shaft 1 needs to be replaced, the user firstly disengages the connecting shaft 222 from the driving member, then removes the pump body cover of the pump body far away from one end of the driving member (the pump body cover in the prior art is generally positioned at the side end), then withdraws the mounting seat 21 and the rotating shaft 1 from the pump body, and under the action of the first spring and the second spring, the driving snap ring 231 and the driven snap ring 251 are disengaged from the clamping groove 12 in the withdrawal process, so that the old rotating shaft 1 is removed and replaced with the new rotating shaft 1, and the positions of the new rotating shaft 1 and the old rotating shaft 1 need to be consistent. Then, the mounting seat 21 and the rotating shaft 1 are pushed into the pump body, and the pump body cover is reset, in the process, when the driving column 24 is abutted and extruded by the side wall of the pump body (or the side wall of the pump body cover), the driving column 24 moves towards the direction of the rotating shaft 1, the first spring is compressed, under the action of the first connecting rod 242, the two driving sliding rods 23 in the same mounting seat 21 are mutually far away, the driving clamping ring 231 is matched with the clamping groove 12, in the moving process of the driving sliding rods 23, the push rod 232 is matched with the sliding blocks 26, the two sliding blocks 26 positioned at the same end of the mounting seat 21 are mutually close, under the action of the second connecting rod 261, the driven sliding rod 25 moves towards the direction of the rotating shaft 1, the driven clamping ring 251 is matched with the clamping groove 12, and then the connecting shaft 222 is matched with the driving piece again, so that the replacement process is completed.
The utility model provides a screw structure of a dry screw vacuum pump, which is characterized in that a mounting seat arranged at two ends of a rotating shaft and a driving shaft slidably arranged on the mounting seat are used for enabling a driving snap ring and a driven snap ring to synchronously move under the action of a first spring and a second spring in the dismounting and mounting process of the mounting seat and the rotating shaft, so that the unlocking and locking of the rotating shaft are automatically completed, the adjustment mode is simple and quick, the workload of a user is reduced, the working efficiency of the rotating shaft replacement is improved, the device is simple in structure, the stability of the device is improved, and the fault risk of the device is reduced. In summary, the beneficial effects of the utility model are as follows: the locking and unlocking of the rotating shaft can be automatically completed in the mounting seat and rotating shaft dismounting process, the workload of a user is reduced, and the fault risk of the device is reduced.
Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. A screw structure of a dry screw vacuum pump, comprising:
The two rotating shafts are provided with spiral blades with opposite directions;
The installation component, it includes mount pad and sleeve pipe, the both ends of pivot are located to the mount pad, and the rotation is equipped with two sleeves on one of them mount pad, two the sleeve pipe respectively with two pivot joint, all be equipped with the gear on the sleeve pipe, all slide in the mount pad and be equipped with two initiative slide bars and two driven slide bars, all be equipped with the initiative snap ring on the initiative slide bar, all be equipped with the initiative post between the initiative slide bar, the initiative post slides and locates in the mount pad, all rotate between initiative post and the initiative slide bar and be equipped with first connecting rod, all be equipped with driven snap ring on the driven slide bar, driven snap ring keeps away from one side of initiative snap ring and all is equipped with two sliders, the slider slides and locates in the mount pad, all rotate between slider and the driven slide bar and be equipped with the second connecting rod, the both ends of pivot all are equipped with the draw-in groove.
2. The screw structure of claim 1, wherein key grooves are formed in the sleeve, and square keys are formed at one ends of the rotating shafts, which are close to the sleeve.
3. The screw structure of a dry screw vacuum pump as claimed in claim 1, wherein one of the gears is provided with a connection shaft to which the driving member is detachably connected.
4. The screw structure of claim 1, wherein two driving slide bars are disposed between two rotating shafts, and two driven slide bars are disposed at both sides of the rotating shafts, respectively.
5. The screw structure of the dry screw vacuum pump according to claim 1, wherein convex seats are arranged in the installation seats between the two rotating shafts, the driving column is arranged in the convex seats in a sliding mode, one end, far away from the rotating shafts, of the driving column penetrates out of the installation seats, and first springs are arranged between the driving column and the installation seats.
6. The screw structure of the dry screw vacuum pump according to claim 1, wherein a fixed seat is arranged between two sliding blocks positioned at the same end of the mounting seat, and a second spring is arranged between the fixed seat and the sliding blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323063583.6U CN221322709U (en) | 2023-11-14 | 2023-11-14 | Screw structure of dry screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323063583.6U CN221322709U (en) | 2023-11-14 | 2023-11-14 | Screw structure of dry screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322709U true CN221322709U (en) | 2024-07-12 |
Family
ID=91799389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323063583.6U Active CN221322709U (en) | 2023-11-14 | 2023-11-14 | Screw structure of dry screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221322709U (en) |
-
2023
- 2023-11-14 CN CN202323063583.6U patent/CN221322709U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |