CN220869641U - Sectional type variable pitch screw structure for screw vacuum pump - Google Patents
Sectional type variable pitch screw structure for screw vacuum pump Download PDFInfo
- Publication number
- CN220869641U CN220869641U CN202322355229.4U CN202322355229U CN220869641U CN 220869641 U CN220869641 U CN 220869641U CN 202322355229 U CN202322355229 U CN 202322355229U CN 220869641 U CN220869641 U CN 220869641U
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- screw
- shell
- vacuum pump
- variable pitch
- water storage
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000010992 reflux Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a sectional variable pitch screw structure for a screw vacuum pump, which comprises a shell, and a plurality of screws, wherein the screws are rotatably connected to the inner cavity of the shell, a water storage cavity is formed in the shell near the outer side of the shell, the water storage cavity is wrapped on the outer side wall of the inner cavity of the shell, one side of the top end of the shell is connected with a water inlet pipe in an intercommunication way, the water outlet end of the water inlet pipe is connected with the water storage cavity in an intercommunication way, the bottom end of the shell is connected with a water drain pipe in an intercommunication way, and the water drain pipe penetrates through the shell and extends into the water storage cavity; the utility model can reduce the reflux in the pump through the sectional variable pitch screw, so that the vacuum can obtain higher vacuum and air extraction efficiency, and the screw can be effectively cooled during working, thereby preventing the screw from deformation caused by overhigh temperature and effectively prolonging the service life of the screw.
Description
Technical Field
The utility model relates to the technical field of screw vacuum pumps, in particular to a sectional type variable pitch screw structure for a screw vacuum pump.
Background
The screw vacuum pump is an air extracting device which uses a pair of screw rotors to synchronously rotate in the opposite directions at high speed in a pump shell to generate air suction and air exhaust effects, and is widely applied to the fields of petroleum, chemical industry, biological pharmacy, electronics, vacuum coating and the like.
In order to reduce back flow in the pump, the existing screw vacuum pump obtains higher vacuum and air extraction efficiency, and air is extracted and compressed through mutual rotation among segmented variable-pitch screws, but the moving contact surface between the screws is increased through the segmented variable-pitch screws, so that more heat is generated in the working space of the screws, the screws are easy to deform due to overhigh heat, the service life is prolonged, and the air extraction efficiency is also influenced. Therefore, we propose a sectional type variable pitch screw structure for a screw vacuum pump.
Disclosure of utility model
The utility model mainly aims to provide a sectional variable-pitch screw structure for a screw vacuum pump, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The utility model provides a sectional type variable pitch screw rod structure for screw vacuum pump, includes the casing, still including rotating the screw rod of connecting in the casing inner chamber, and the screw rod has a plurality ofly, the inside water storage chamber of having offered in the outside that is close to of casing, and the water storage chamber parcel is at casing inner chamber lateral wall, casing top one side intercommunication is connected with the inlet tube, and inlet tube water outlet end and water storage chamber intercommunication are connected, casing bottom intercommunication is connected with the drain pipe, and the drain pipe runs through the casing and extends to the water storage intracavity portion, screw rod one end fixed surface is connected with first equidistant section helical blade, the screw rod is for the one end fixed surface of first equidistant section helical blade is connected with second equidistant section helical blade.
Further, the inner cavity of the screw rod is sleeved with a central fixing rod, connecting discs are detachably connected to the surfaces of two ends of the central fixing rod, fixing bolts are connected to the outer side walls of the connecting discs in a threaded mode, and penetrate through the connecting discs and extend to the inside of the screw rod.
Further, a limiting block is detachably connected to one side of the inner cavity of the shell, and a limiting shaft matched with the screw is embedded and connected to the surface of the limiting block.
Further, the top end of one side of the shell close to the limiting shaft is connected with an exhaust port in an intercommunication mode.
Further, the shell is close to the side surface of spacing axle and can dismantle and be connected with the second end cover, second end cover lateral wall can dismantle and be connected with the access cover that is used for the screw rod to overhaul.
Further, a first end cover is detachably connected to one side of the shell opposite to the second end cover.
Further, the inner side wall of the water storage cavity is coated and connected with a corrosion-resistant layer.
Compared with the prior art, the utility model has the following beneficial effects: 1. according to the utility model, the shell, the water inlet pipe, the water storage cavity and the water outlet pipe are mutually matched, the water inlet pipe is connected with the external water body water suction pump through the water supply pipe in the screw rotation process, in the working engineering of the vacuum pump, external cooling water is injected into the water storage cavity through the water inlet pipe, and then discharged through the water outlet pipe, so that the cooling water circularly flows in the water storage cavity, and the working cavity of the screw is wrapped on the inner side; 2. according to the utility model, the central fixing rod, the fixing bolt and the connecting disc are arranged, the screw rod is sleeved on the surface of the central fixing rod, the two sides of the central fixing rod are fixed with the central fixing rod through the connecting disc and the fixing bolt, when equidistant section helical blades on the screw rod are damaged, the equidistant section helical blades on the screw rod can be quickly detached from the central fixing rod, the whole screw rod is not required to be replaced, the resource waste is avoided, in addition, the use effect of the screw rod vacuum pump can be effectively improved according to the screw rods with different helical blades on demand during use.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a segmented variable pitch screw structure for a screw vacuum pump according to the present utility model.
Fig. 2 is a schematic structural view of a sectional view of a screw box of a sectional type variable pitch screw structure for a screw vacuum pump according to the present utility model.
Fig. 3 is a schematic view of a sectional view of a screw of a sectional type variable pitch screw structure for a screw vacuum pump according to the present utility model.
In the figure: 1. a first end cap; 2. a water inlet pipe; 3. a housing; 4. an exhaust port; 5. a limiting block; 6. a limiting shaft; 7. a second end cap; 8. an access cover; 9. a screw; 10. a first equidistant section of helical blades; 11. a second equidistant section of helical blades; 12. a water storage chamber; 13. a drain pipe; 14. a center fixed rod; 15. a fixing bolt; 16. and a connecting disc.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
As shown in fig. 1-3, a sectional variable pitch screw 9 structure for a screw 9 vacuum pump comprises a shell 3, and further comprises a plurality of screws 9 rotatably connected to the inner cavity of the shell 3, wherein a water storage cavity 12 is formed in the shell 3 near the outer side, the water storage cavity 12 is wrapped on the outer side wall of the inner cavity of the shell 3, a water inlet pipe 2 is connected to one side of the top end of the shell 3 in an intercommunicating manner, the water outlet end of the water inlet pipe 2 is connected to the water storage cavity 12 in an intercommunicating manner, a water outlet pipe 13 is connected to the bottom end of the shell 3 in an intercommunicating manner, the water outlet pipe 13 penetrates through the shell 3 and extends into the water storage cavity 12, a limit block 5 is detachably connected to one side of the inner cavity of the shell 3, a limit shaft 6 matched with the screw 9 is connected to the surface of the limit block 5 in an embedded manner, and an exhaust port 4 is connected to the top end of one side of the shell 3 near the limit shaft 6 in an intercommunicating manner; external cooling water is injected into the water storage cavity 12 through the water inlet pipe 2, and then is discharged through the water outlet pipe 13, so that the cooling water circularly flows in the water storage cavity 12, the working cavity where the screw rod 9 works is wrapped inside, when a large amount of heat is generated in the rotation process of the screw rod 9, the cooling water in the water storage cavity 12 is subjected to heat exchange with the working cavity, the temperature rise of the working cavity caused by a large amount of heat generated in the working process of the screw rod 9 is avoided, the screw rod 9 is effectively prevented from being deformed due to overhigh temperature, the screw rod 9 can be effectively protected, the service life of the screw rod 9 is prolonged, the air extraction effect of the vacuum pump of the screw rod 9 can be effectively ensured, the screw rod 9 can be rotated while the screw rod 9 is limited through the limiting block 5 and the limiting shaft 6, and the stability of the screw rod 9 during rotation is ensured.
The inner cavity of the screw rod 9 is sleeved with a central fixing rod 14, two end surfaces of the central fixing rod 14 are detachably connected with a connecting disc 16, the outer side wall of the connecting disc 16 is connected with a fixing bolt 15 in a threaded manner, the fixing bolt 15 penetrates through the connecting disc 16 and extends into the screw rod 9, one end surface of the screw rod 9 is fixedly connected with a first equidistant section helical blade 10, and one end surface of the screw rod 9 opposite to the first equidistant section helical blade 10 is fixedly connected with a second equidistant section helical blade 11; screw rod 9 cup joints at center dead lever 14 surface, and center dead lever 14 both sides are fixed with dead bolt 15 and center dead lever 14 through connection pad 16, can dismantle it from center dead lever 14 fast when equidistant section helical blade on screw rod 9 damages, need not change screw rod 9 wholly, avoid causing the wasting of resources to can effectively improve screw rod 9 vacuum pump's result of use according to different helical blade's of demand screw rod 9 when using.
The surface of one side, close to the limiting shaft 6, of the shell 3 is detachably connected with a second end cover 7, the outer side wall of the second end cover 7 is detachably connected with an access cover 8 for overhauling a screw 9, one side, opposite to the second end cover 7, of the shell 3 is detachably connected with a first end cover 1, and the inner side wall of the water storage cavity 12 is coated and connected with a corrosion-resistant layer; the second end cover 7 and the access cover 8 are detached to facilitate overhauling the screw 9, and the first end cover 1 is detached to facilitate overhauling the power output section of the screw 9, so that the effect of power output is ensured.
It should be noted that, the utility model is a sectional type variable pitch screw 9 structure for a screw 9 vacuum pump, when in operation, the screw 9 with different pitch helical blades is needed according to the requirement, the screw is sleeved on the surface of a central fixing rod 14, two sides of the central fixing rod 14 are fixed with the central fixing rod 14 through a connecting disc 16 and a fixing bolt 15, the screw 9 is fixed on the surface of a shell 3 through the central fixing rod 14, a water inlet pipe 2 is connected with an external water suction pump through a water supply pipe when the screw 9 rotates, in the working engineering of the vacuum pump, external cooling water is injected into a water storage cavity 12 through the water inlet pipe 2, and then is drained through a drain pipe 13, so that the cooling water circularly flows in the water storage cavity 12, and the working cavity where the screw 9 works is wrapped inside.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present 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 without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a screw vacuum pump is with sectional type variable pitch screw rod structure, includes casing (3), its characterized in that still includes to rotate and connects in screw rod (9) of casing (3) inner chamber, and screw rod (9) have a plurality ofly, water storage chamber (12) have been seted up near the outside in casing (3) inside, and water storage chamber (12) parcel is at casing (3) inner chamber lateral wall, intercommunication is connected with inlet tube (2) on casing (3) top one side, and inlet tube (2) play water end and water storage chamber (12) intercommunication are connected, casing (3) bottom intercommunication is connected with drain pipe (13), and drain pipe (13) run through casing (3) and extend to water storage chamber (12) inside, screw rod (9) one end fixed surface is connected with first equidistant section helical blade (10), screw rod (9) are connected with second equidistant section helical blade (11) for the one end fixed surface of first equidistant section helical blade (10).
2. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: the inner cavity of the screw rod (9) is sleeved with a central fixing rod (14), connecting discs (16) are detachably connected to the surfaces of two ends of the central fixing rod (14), fixing bolts (15) are connected to the outer side walls of the connecting discs (16) in a threaded mode, and the fixing bolts (15) penetrate through the connecting discs (16) and extend to the inside of the screw rod (9).
3. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: a limiting block (5) is detachably connected to one side of the inner cavity of the shell (3), and a limiting shaft (6) matched with the screw rod (9) is embedded and connected to the surface of the limiting block (5).
4. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: the top end of one side of the shell (3) close to the limiting shaft (6) is connected with an exhaust port (4) in an intercommunication way.
5. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: one side surface of the shell (3) close to the limiting shaft (6) is detachably connected with a second end cover (7), and the outer side wall of the second end cover (7) is detachably connected with an access cover (8) for overhauling the screw (9).
6. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: a first end cover (1) is detachably connected to one side of the shell (3) opposite to the second end cover (7).
7. The segmented variable pitch screw structure for a screw vacuum pump of claim 1, wherein: the inner side wall of the water storage cavity (12) is coated and connected with a corrosion-resistant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322355229.4U CN220869641U (en) | 2023-08-30 | 2023-08-30 | Sectional type variable pitch screw structure for screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322355229.4U CN220869641U (en) | 2023-08-30 | 2023-08-30 | Sectional type variable pitch screw structure for screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869641U true CN220869641U (en) | 2024-04-30 |
Family
ID=90814116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322355229.4U Active CN220869641U (en) | 2023-08-30 | 2023-08-30 | Sectional type variable pitch screw structure for screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869641U (en) |
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2023
- 2023-08-30 CN CN202322355229.4U patent/CN220869641U/en active Active
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