CN211692826U - Two-stage liquid ring pump impeller flow passage sealing structure - Google Patents
Two-stage liquid ring pump impeller flow passage sealing structure Download PDFInfo
- Publication number
- CN211692826U CN211692826U CN202020200168.8U CN202020200168U CN211692826U CN 211692826 U CN211692826 U CN 211692826U CN 202020200168 U CN202020200168 U CN 202020200168U CN 211692826 U CN211692826 U CN 211692826U
- Authority
- CN
- China
- Prior art keywords
- impeller
- pump
- liquid ring
- distributor
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the technical field of the liquid ring vacuum pump, concretely relates to doublestage liquid ring pump impeller runner seal structure, including the pump body, preceding intermediate wall and back intermediate wall separate the pump body for preceding pump chamber and back pump chamber, are equipped with preceding impeller, back impeller in two pump chambeies respectively, and preceding, be equipped with the location axle sleeve between the back impeller, the front end of the pump body is equipped with preceding plate of distributor, and preceding plate of distributor is equipped with preceding pump cover outward, is equipped with a plurality of cluster water holes on preceding impeller wheel hub of preceding impeller, the back impeller wheel hub, and the cluster water hole runs through the left and right sides preceding, back impeller. The utility model discloses make original clearance seal become water-stop, be favorable to between impeller and the plate of distributor, the preceding stage pump chamber and the back stage pump chamber between sealed, to the performance that improves the pump, especially the promotion of tolerance under the high vacuum provides support.
Description
Technical Field
The utility model relates to a doublestage liquid ring pump impeller runner seal structure belongs to liquid ring vacuum pump technical field.
Background
The liquid ring pump mainly takes water as a circulating medium, can be used as a vacuum pump and a compressor, and is mainly applied to gas extraction, compression, conveying and recovery in the industries of chemical industry, petroleum industry, coal industry, pharmaceutical industry and the like. Principle of liquid ring pump: the pump body is filled with a proper amount of water as working fluid. When the impeller rotates, water is thrown around by the impeller and, due to the centrifugal force, forms a closed ring of approximately equal thickness depending on the shape of the pump chamber. The inner surface of the lower part of the water ring is just tangent to the impeller hub, and the inner surface of the upper part of the water ring is just contacted with the top end of the blade (actually, the blade has a certain insertion depth in the water ring). At the moment, a crescent space is formed between the impeller hub and the water ring, and the space is divided into a plurality of small cavities with the same number as the blades by the impeller. If the lower part of the impeller is 0 degrees as a starting point, the volume of a small cavity is increased from small to large when the impeller rotates for 180 degrees and is communicated with an air suction port on the end surface, air is sucked at the moment, and the small cavity is isolated from the air suction port when the air suction is finished; when the impeller continues to rotate, the small cavity is changed from big to small, so that the gas is compressed; when the small chamber is communicated with the exhaust port, the gas is exhausted out of the pump. The water ring pump is a positive displacement vacuum pump in which suction, compression and discharge are performed by changing the volume of a pump chamber.
The double-stage pump is composed of a front cavity, a rear cavity and two independent impeller rotors, no friction piece is arranged in a pump cavity, the impellers are not in contact with a front distribution disc, a rear distribution disc and a middle wall, the precision of the liquid ring pump is mainly guaranteed by a gap between the rotors and the distribution discs, and a circulating medium is filled in the gap during work. The better the flatness of the distribution disc and the rotor, the smaller the gap, the better the sealing effect, the smaller the leakage, and the higher the performance of the obtained pump.
The traditional two-stage liquid ring pump structure is composed of a front rotor and a rear rotor, and a front cavity and a rear cavity which are respectively composed of a distribution disc, a middle wall group and a pump body. The circulating medium (working fluid) of the pump cavity is supplied from the bottom of the front pump cover and enters the impeller through the hole on the front distribution disc to play the roles of sealing and circulating. However, after the impeller rotates, the liquid is thrown around and is collected at the periphery of the pump cavity, and the water in the central part cannot play a sufficient sealing role. The wheel hub of preceding impeller and preceding plate of distributor still some water can be sealed, but preceding impeller and intermediate wall, back impeller and back plate of distributor just do not have enough water and seal, and water also can not advance the wheel hub position, only leans on the clearance to seal, and the end of breathing in will the UNICOM with the exhaust end, and gas is difficult to avoid having a small amount of revealing, advances the air inlet end from the exhaust end and produces inside revealing, has just so influenced the vacuum and the gas transport volume of pump.
SUMMERY OF THE UTILITY MODEL
According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: the double-stage liquid ring pump impeller flow channel sealing structure is beneficial to sealing between the impeller and the distribution disc and between the front-stage pump cavity and the rear-stage pump cavity, and provides support for improving the performance of the pump, particularly improving the air flow under high vacuum.
Doublestage liquid ring pump impeller runner seal structure, including the pump body, preceding intermediate wall and back intermediate wall separate the pump body for preceding pump chamber and back pump chamber, impeller, back impeller before being equipped with respectively in two pump chambers, be equipped with the location axle sleeve between preceding, the back impeller, the front end of the pump body is equipped with preceding plate of distributor, preceding plate of distributor is equipped with preceding pump cover outward, is equipped with a plurality of cluster water holes on the preceding impeller wheel hub of preceding impeller, the back impeller wheel hub, the cluster water hole runs through the left and right sides of preceding, back impeller.
The wheel hub department of front and back impeller is equipped with the cluster water hole, the cluster water hole of front and back rotor is linked together through the clearance, when the moisturizing mouth of front portion pump cap bottom intake, water passes through preceding pump cover, preceding plate of distributor enters into preceding impeller, and the cluster water hole that sets up through preceding impeller gets into preceding intermediate wall and back intermediate wall in proper order, back impeller cluster water hole, make around between impeller wheel hub and the plate of distributor that corresponds by the clearance seal originally become the water seal, preceding back chamber has also carried out thorough isolation through water. After the design is improved, the overall performance of the pump is obviously improved, particularly in a high vacuum stage.
Preferably, the water holes are uniformly distributed around the central shafts of the front impeller and the rear impeller.
Preceding intermediate wall, back intermediate wall and location axle sleeve between form annular culvert basin, make water gather in culvert basin department, sealed with the water, with the front and back pump chamber isolated completely, the front and back chamber has carried out thorough isolation through water, has improved the leakproofness.
Compared with the prior art, the utility model beneficial effect who has is:
doublestage liquid ring pump impeller runner seal structure for clearance seal originally has become water-stop, is favorable to between impeller and the plate of distributor, the preceding stage pump chamber and the back stage pump chamber between sealed, to the performance that improves the pump, especially the promotion of tolerance under the high vacuum provides support.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a partial enlarged view of portion A of FIG. 1;
FIG. 3 is a partial enlarged view of portion B of FIG. 1;
FIG. 4 is a side view of the impeller;
FIG. 5 is a cross-sectional view of the impeller;
FIG. 6 is a schematic view of a conventional dual stage liquid ring pump impeller flow channel seal structure;
fig. 7 is a partially enlarged view of a portion C in fig. 6.
In the figure: 1. a water replenishing port; 2. a front pump cover; 3. a front distribution tray; 4. a front pump cavity; 5. a front impeller hub; 6. a front intermediate wall; 7. a rear intermediate wall; 8. a rear pump cavity; 9. a rear impeller hub; 10. a water stringing hole; 11. a water containing trough.
Detailed Description
The invention will be further described with reference to the following examples:
as shown in fig. 1-5, doublestage liquid ring pump impeller runner seal structure, including the pump body, preceding intermediate wall 6 and back intermediate wall 7 separate the pump body for preceding pump chamber 4 and back pump chamber 8, are equipped with preceding impeller, back impeller in two pump chambeies respectively, preceding, be equipped with the location axle sleeve between the back impeller, the front end of the pump body is equipped with preceding plate of distributor 3, preceding plate of distributor 3 is equipped with preceding pump cover 2 outward, is equipped with a plurality of cluster water holes 10 on preceding impeller hub 5 of preceding impeller, the back impeller's the back impeller hub 9, the left and right sides of preceding, back impeller is run through in cluster water hole 10.
The water holes 10 of the present embodiment are uniformly distributed around the central axis of the front and rear impellers.
The front intermediate wall 6, the rear intermediate wall 7 and the positioning sleeve of the present embodiment form an annular water containing channel 11 therebetween.
The utility model discloses rotor impeller wheel hub department is equipped with cluster water hole 10 around, intermediate wall department is equipped with the box basin, when the 1 water in the moisturizing mouth of front portion pump cap bottom was intake, water passes through preceding pump cover 2, preceding plate of distributor 3 enters into preceding impeller to cluster water hole 10 through preceding impeller setting gets into intermediate wall and back impeller cluster water hole 10 in proper order, make around by the clearance seal of original between impeller wheel hub 9 and the plate of distributor that corresponds become water-stop, and preceding rear chamber has also carried out thorough isolation through the water in box basin. The utility model discloses make the pump wholeness ability especially obtain obviously promoting in the high vacuum stage.
Claims (3)
1. The utility model provides a doublestage liquid ring pump impeller runner seal structure, includes the pump body, preceding intermediate wall (6) and back intermediate wall (7) separate the pump body for preceding pump chamber (4) and back pump chamber (8), are equipped with preceding impeller, back impeller in two pump chambers respectively, are equipped with the location axle sleeve between preceding, the back impeller, and the front end of the pump body is equipped with preceding plate of distributor (3), and preceding plate of distributor (3) are equipped with preceding pump cover (2), its characterized in that outward: a plurality of water stringing holes (10) are arranged on a front impeller hub (5) of the front impeller and a rear impeller hub (9) of the rear impeller, and the water stringing holes (10) penetrate through the left side and the right side of the front impeller and the rear impeller.
2. The dual stage liquid ring pump impeller flowpath seal of claim 1, wherein: the water stringing holes (10) are uniformly distributed around the central shafts of the front impeller and the rear impeller.
3. The dual stage liquid ring pump impeller flowpath seal of claim 1, wherein: an annular water containing groove (11) is formed among the front middle wall (6), the rear middle wall (7) and the positioning shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200168.8U CN211692826U (en) | 2020-02-24 | 2020-02-24 | Two-stage liquid ring pump impeller flow passage sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200168.8U CN211692826U (en) | 2020-02-24 | 2020-02-24 | Two-stage liquid ring pump impeller flow passage sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211692826U true CN211692826U (en) | 2020-10-16 |
Family
ID=72776341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020200168.8U Active CN211692826U (en) | 2020-02-24 | 2020-02-24 | Two-stage liquid ring pump impeller flow passage sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211692826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607599A (en) * | 2020-12-09 | 2022-06-10 | 东北大学 | Multistage roots vacuum pump |
-
2020
- 2020-02-24 CN CN202020200168.8U patent/CN211692826U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607599A (en) * | 2020-12-09 | 2022-06-10 | 东北大学 | Multistage roots vacuum pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211692826U (en) | Two-stage liquid ring pump impeller flow passage sealing structure | |
| CN204805096U (en) | Special vacuum pump of atmospheric pressure engine | |
| WO2019052131A1 (en) | Low-carbon oil-free vacuum air pump unit with high pumping speed | |
| CN204200576U (en) | Condition of high vacuum degree single-stage water-ring vacuum pump | |
| WO2018161948A1 (en) | Vertical composite radial flow molecular pump | |
| CN111188772A (en) | Impeller capable of improving sealing performance of liquid ring pump and forming method thereof | |
| CN111207084B (en) | Self-priming centrifugal pump | |
| CN211692830U (en) | Impeller capable of improving sealing performance of liquid ring pump | |
| CN218669810U (en) | Water ring vacuum pump and distributor thereof | |
| CN212672053U (en) | Rotor of double-acting vane pump | |
| CN207673632U (en) | A kind of gas-liquid delivery promotion centrifugal oil pump | |
| CN207437347U (en) | Rotating boosting pumps | |
| CN206429431U (en) | Centrifugal pump and pump cover | |
| CN206246327U (en) | A kind of two-stage parallel connection vacuum diaphragm pump | |
| CN211059012U (en) | Roots vacuum pump capable of prolonging service life of oil seal | |
| CN201474974U (en) | Water-ring vacuum pump | |
| CN217421519U (en) | Single-stage double-acting four-suction type liquid ring compressor | |
| CN207795574U (en) | Combined dispenser twin-stage liquid rotary pump | |
| CN208138157U (en) | Double-suction submerged pump | |
| CN211599003U (en) | Water cooling structure of bearing chamber of water ring pump | |
| CN219672848U (en) | Hydraulic vacuum pump | |
| CN204186611U (en) | A kind of defoaming pump | |
| CN105090018B (en) | Flex rotor rotary motive power pump | |
| CN108730201A (en) | Double-suction submerged pump | |
| CN103644118B (en) | Circulating pump in parallel, combination circulating pump, compound circulating pump and unit of bleeding thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221017 Address after: No. 1, Huacheng Road, Boshan District, Zibo City, Shandong Province 255200 Patentee after: Luyang Jinggong Vacuum Technology (Zibo) Co.,Ltd. Address before: No. 1, Huacheng Road, Boshan Development Zone, Zibo City, Shandong Province 255200 Patentee before: SHANDONG JINGGONG PUMPS CO.,LTD. |
|
| TR01 | Transfer of patent right |