CN210343721U - Special pump for paper pulp conveying - Google Patents
Special pump for paper pulp conveying Download PDFInfo
- Publication number
- CN210343721U CN210343721U CN201921377775.5U CN201921377775U CN210343721U CN 210343721 U CN210343721 U CN 210343721U CN 201921377775 U CN201921377775 U CN 201921377775U CN 210343721 U CN210343721 U CN 210343721U
- Authority
- CN
- China
- Prior art keywords
- plate
- pump
- auxiliary
- main
- cover
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a special pump for conveying paper pulp, which comprises a front pump cover, a rear pump cover, a pump body, a suspension bracket and a pump shaft, wherein a main impeller and an auxiliary impeller are fixed at the front end of the pump shaft, and a middle pump cover is arranged between the main impeller and the auxiliary impeller; the main impeller comprises a main cover plate, the front side surface of the main cover plate is provided with a main blade, the rear side surface of the main cover plate is provided with a back blade, the middle part of the main cover plate is fixedly connected with a hub, and the hub is provided with an annular groove; the auxiliary impeller comprises an auxiliary cover plate, and the rear side surface of the auxiliary cover plate is provided with auxiliary blades; the cross section of the middle pump cover is Z-shaped and comprises an inner plate, a middle plate and an outer plate, the inner plate is arranged between the back blade and the auxiliary cover plate, the inner end part of the inner plate is arranged in the annular groove, the middle plate is arranged at the outer end part of the auxiliary cover plate, and the outer plate is fixedly connected with the rear pump cover. The utility model discloses a packing is sealed, utilizes back of the body blade and the pressure boost of auxiliary impeller for the pressure of back pump chamber is higher than the pressure of preceding pump chamber, prevents most paper pulp tissue to enter into sealed intracavity, and the normal operation of pump when having realized paper pulp transport, it is more convenient to maintain.
Description
Technical Field
The utility model relates to a pump equipment specifically is a special pump is carried to paper pulp.
Background
In the papermaking industry, the transportation of paper pulp is a difficult problem, the physical property of paper pulp is different from ordinary impurity, ordinary impurity is solid particle, it is insoluble in water, the metal material of high rigidity can be selected to overflow the part, the machine seals and selects carbide can satisfy the operation requirement, but paper pulp is soluble in water, and viscidity is high, often can be because the pressure height in pump chamber is high and permeate sealed face gradually, will dry into the solid in the short time after paper pulp oozes, will glue on mechanical seal, cause very big destruction to mechanical seal, therefore it is very important to solve paper pulp transportation in-process and not permeate sealed department.
SUMMERY OF THE UTILITY MODEL
For solving the defect of the prior art, the utility model provides a special pump is carried to paper pulp, the utility model discloses a filler seal utilizes back of the body blade and expeller pressure boost for the pressure of back pump chamber is higher than the pressure of preceding pump chamber, prevents most paper pulp tissue to enter into sealed intracavity, and the normal operation of pump when having realized paper pulp transport, it is more convenient to maintain.
In order to achieve the technical purpose, the utility model adopts the following technical scheme: a special pump for conveying paper pulp comprises a front pump cover, a rear pump cover, a pump body, a suspension and a pump shaft, wherein a main impeller and an auxiliary impeller are fixed at the front end of the pump shaft, and a middle pump cover is arranged between the main impeller and the auxiliary impeller;
the main impeller comprises a main cover plate, the front side surface of the main cover plate is provided with main blades, the rear side surface of the main cover plate is provided with back blades, the middle part of the main cover plate is fixedly connected with a hub, and the hub is provided with an annular groove; the auxiliary impeller comprises an auxiliary cover plate, and an auxiliary blade is arranged on the rear side surface of the auxiliary cover plate; the cross section of the middle pump cover is Z-shaped and comprises an inner plate, a middle plate and an outer plate, the inner plate is arranged between the back blade and the auxiliary cover plate, the inner end part of the inner plate is arranged in the annular groove, the middle plate is arranged at the outer end part of the auxiliary cover plate, and the outer plate is fixedly connected with the rear pump cover;
the rear pump cover comprises an axial ring plate and a radial ring plate, a baffle plate is arranged at the inner end part of the radial ring plate, a connecting plate is arranged at the end part of the axial ring plate, the outer end part of the radial ring plate is fixedly connected with the outer plate, a plurality of packing sealing rings are arranged among the axial ring plate, the baffle plate and the pump shaft, the packing sealing rings adopt flexible asbestos packing, a gland is arranged at the end part of each packing sealing ring, and the gland is fixedly connected with the connecting plate; an inlet and an outlet are formed in the packing seal ring, and the inlet and the outlet are connected with pipelines.
Furthermore, the inner plate, the middle plate and the outer plate are integrally formed.
Further, the packing sealing ring is provided with 5.
Further, the auxiliary blade is a straight blade.
Further, a shaft sleeve is arranged between the packing seal ring and the pump shaft.
To sum up, the utility model discloses following technological effect has been gained:
1. the utility model discloses a packing, traditional mechanical seal only move a friction between the quiet ring vice, in case inefficacy will change whole mechanical seal, and packing only need with axle sleeve friction loss when regularly screw up packing gland can, even long-time wearing and tearing need change the filler, also need not dismantle the pipeline, it is convenient to maintain, lowers the cost.
2. The utility model discloses divide into two front and back cavitys with the pump chamber, set up the main impeller in the pump chamber of the front, the main impeller back sets up elongated back blade, set up the auxiliary impeller in the pump chamber of the back, when the pump shaft is rotatory, back blade and auxiliary impeller produce pressure simultaneously, are used for offsetting the high pressure that the main blade produced, make the pressure of back pump chamber higher than the pressure of pump chamber of the front, prevent paper pulp to enter into the back pump chamber, thus prevent paper pulp to enter into sealing device, avoid paper pulp to adhere to on sealed, lengthen the sealed life;
3. the utility model is filled with cooling liquid for cooling and lubrication, thereby avoiding dry grinding of the packing seal and the shaft sleeve and prolonging the service life of the packing seal;
4. the utility model discloses utilize back of the body blade and auxiliary impeller pressure boost for the pressure of back pump chamber is higher than the pressure of preceding pump chamber, prevents most paper pulp tissue to enter into sealed intracavity, and the normal operation of pump when having realized paper pulp transport, it is more convenient to maintain.
Drawings
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;
FIG. 2 is a partial schematic view of FIG. 1;
in the figure, 1, a front pump cover, 2, a pump body, 3, a rear pump cover, 301, an axial ring plate, 302, a baffle plate, 303, a radial ring plate, 304, a connecting plate, 4, a main impeller, 401, a main blade, 402, a main cover plate, 403, a back blade, 404, a hub, 405, an annular groove, 5, a middle pump cover, 501, an inner plate, 502, a middle plate, 503, an outer plate, 6, a secondary impeller, 601, a secondary cover plate, 602, a secondary blade, 7, a packing seal ring, 8, a gland, 9, a shaft sleeve, 10, an inlet and outlet, 11, a pipeline, 12, a pump shaft, 13 and a suspension.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example (b):
as shown in fig. 1 and 2, the pump special for pulp transportation comprises a front pump cover 1, a rear pump cover 3, a pump body 2, a suspension 13 and a pump shaft 12, wherein a main impeller 4 and an auxiliary impeller 6 are fixed at the front end of the pump shaft 12, and a middle pump cover 5 is arranged between the main impeller 4 and the auxiliary impeller 6.
The main impeller 4 comprises a main cover plate 402, the front side surface of the main cover plate 402 is provided with a main blade 401, the rear side surface of the main cover plate 402 is provided with a back blade 403, the middle part of the main cover plate 402 is fixedly connected with a hub 404, and the hub 404 is provided with an annular groove 405; the auxiliary impeller 6 comprises an auxiliary cover plate 601, the rear side surface of the auxiliary cover plate 601 is provided with auxiliary blades 602, and the auxiliary blades 602 adopt divergent straight blades; the cross section of the middle pump cover 5 is Z-shaped and comprises an inner plate 501, a middle plate 502 and an outer plate 503, the inner plate 501, the middle plate 502 and the outer plate 503 are integrally arranged, the inner plate 501 is arranged between the back blade 403 and the auxiliary cover plate 601, the inner end of the inner plate 501 is arranged in the annular groove 405, the middle plate 502 is arranged at the outer end of the auxiliary cover plate 601, the outer plate 503 is fixedly connected with the rear pump cover 3 to divide the pump body 2 into two pump cavities, the main impeller 4 and the auxiliary impeller 6 are respectively arranged in the two pump cavities, the main impeller 4 is arranged in the front pump cavity, and the auxiliary impeller.
The rear pump cover 3 comprises an axial ring plate 301 and a radial ring plate 303, a baffle plate 302 is arranged at the inner end of the radial ring plate 303, a connecting plate 304 is arranged at the end part of the axial ring plate 301, the outer end part of the radial ring plate 303 is fixedly connected with an outer plate 503, a plurality of packing seal rings 7 are arranged between the axial ring plate 301, the baffle plate 302 and the pump shaft 12, a gland 8 is arranged at the end part of each packing seal ring 7, and the gland 8 is fixedly connected with the connecting plate 304; an inlet and an outlet 10 are formed in the packing seal ring 7, the inlet and the outlet 10 are connected with a pipeline 11, and cooling liquid is introduced into the pipeline 11 and used for cooling and lubricating.
In the embodiment, 5 packing seal rings 7 are arranged, and the packing seal rings 7 adopt flexible asbestos packing; a shaft sleeve 9 is arranged between the packing seal ring 7 and the pump shaft 12.
The main impeller 4 generates a high pressure in the front pump chamber by the rotation of the main blades 401, and the back blades 403 generate a pressure when rotating, which counteracts a part of the high pressure. The secondary impeller 6 generates another pressure in the rear pump chamber by the rotation of the secondary blades 602, which counteracts the remaining high pressure. The pressure generated by the back blade 403 and the auxiliary impeller 6 is greater than the high pressure generated by the main blade 401, so that the pressure in the rear pump chamber is greater than the pressure in the front pump chamber, and the pulp is prevented from permeating into the rear pump chamber from the front pump chamber, and the pulp is prevented from entering the sealing device.
Compared with the prior art, the utility model discloses a packing, traditional mechanical seal only move a friction between the quiet ring vice, in case inefficacy will change whole mechanical seal, and packing only need with axle sleeve friction loss when regularly screw up packing gland can, even long-time wearing and tearing need change the filler, also need not dismantle the pipeline, it is convenient to maintain, lowers the cost. The utility model discloses divide into two front and back cavitys with the pump chamber, set up the main impeller in the pump chamber of the front, the main impeller back sets up elongated back blade, set up the auxiliary impeller in the pump chamber of the back, when the pump shaft is rotatory, back blade and auxiliary impeller produce pressure simultaneously, are used for offsetting the high pressure that the main blade produced, make the pressure of back pump chamber higher than the pressure of pump chamber of the front, prevent paper pulp to enter into the back pump chamber, thus prevent paper pulp to enter into sealing device, avoid paper pulp to adhere to on sealed, lengthen the sealed life; the utility model is filled with cooling liquid for cooling and lubrication, thereby avoiding dry grinding of the packing seal and the shaft sleeve and prolonging the service life of the packing seal; the utility model discloses utilize back of the body blade and auxiliary impeller pressure boost for the pressure of back pump chamber is higher than the pressure of preceding pump chamber, prevents most paper pulp tissue to enter into sealed intracavity, and the normal operation of pump when having realized paper pulp transport, it is more convenient to maintain.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a special pump is carried to paper pulp, includes preceding pump cover (1), back pump cover (3), the pump body (2), suspension (13), pump shaft (12), its characterized in that: a main impeller (4) and an auxiliary impeller (6) are fixed at the front end of the pump shaft (12), and a middle pump cover (5) is arranged between the main impeller (4) and the auxiliary impeller (6);
the main impeller (4) comprises a main cover plate (402), the front side surface of the main cover plate (402) is provided with main blades (401), the rear side surface of the main cover plate (402) is provided with back blades (403), the middle part of the main cover plate (402) is fixedly connected with a hub (404), and the hub (404) is provided with an annular groove (405); the auxiliary impeller (6) comprises an auxiliary cover plate (601), and auxiliary blades (602) are arranged on the rear side surface of the auxiliary cover plate (601); the cross section of the middle pump cover (5) is Z-shaped and comprises an inner plate (501), a middle plate (502) and an outer plate (503), the inner plate (501) is arranged between the back blade (403) and the auxiliary cover plate (601), the inner end part of the inner plate (501) is arranged in the annular groove (405), the middle plate (502) is arranged at the outer end part of the auxiliary cover plate (601), and the outer plate (503) is fixedly connected with the rear pump cover (3);
the rear pump cover (3) comprises an axial ring plate (301) and a radial ring plate (303), a baffle plate (302) is arranged at the inner end part of the radial ring plate (303), a connecting plate (304) is arranged at the end part of the axial ring plate (301), the outer end part of the radial ring plate (303) is fixedly connected with the outer plate (503), a plurality of packing seal rings (7) are arranged between the axial ring plate (301), the baffle plate (302) and the pump shaft (12), the packing seal rings (7) adopt flexible asbestos packing, a gland (8) is arranged at the end part of each packing seal ring (7), and the gland (8) is fixedly connected with the connecting plate (304); an inlet and an outlet (10) are formed in the packing seal ring (7), and the inlet and the outlet (10) are connected with a pipeline (11).
2. The special pump for pulp conveying according to claim 1, characterized in that: the inner plate (501), the middle plate (502) and the outer plate (503) are integrally formed.
3. The special pump for pulp conveying according to claim 1, characterized in that: and 5 packing seal rings (7) are arranged.
4. The special pump for pulp conveying according to claim 1, characterized in that: the auxiliary blade (602) adopts a straight blade.
5. The special pump for pulp conveying according to claim 1, characterized in that: and a shaft sleeve (9) is arranged between the packing seal ring (7) and the pump shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377775.5U CN210343721U (en) | 2019-08-22 | 2019-08-22 | Special pump for paper pulp conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377775.5U CN210343721U (en) | 2019-08-22 | 2019-08-22 | Special pump for paper pulp conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210343721U true CN210343721U (en) | 2020-04-17 |
Family
ID=70175975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921377775.5U Active CN210343721U (en) | 2019-08-22 | 2019-08-22 | Special pump for paper pulp conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210343721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153759A (en) * | 2021-06-02 | 2021-07-23 | 尚宝罗江苏节能科技股份有限公司 | High-efficiency high-concentration non-blocking pulp pump |
| RU2813399C1 (en) * | 2023-10-18 | 2024-02-12 | Сергей Николаевич Гулюк | Centrifugal pump |
-
2019
- 2019-08-22 CN CN201921377775.5U patent/CN210343721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153759A (en) * | 2021-06-02 | 2021-07-23 | 尚宝罗江苏节能科技股份有限公司 | High-efficiency high-concentration non-blocking pulp pump |
| RU2813399C1 (en) * | 2023-10-18 | 2024-02-12 | Сергей Николаевич Гулюк | Centrifugal pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210343721U (en) | Special pump for paper pulp conveying | |
| CN104024641A (en) | Pump with double- suction impeller generating axial thrust | |
| CN105240287A (en) | Novel energy-saving water ring vacuum pump | |
| CN102758791A (en) | Centrifugal pump with high suction pressure | |
| US1394959A (en) | Shaft-packing | |
| CN104763641A (en) | Swirl self-priming pump | |
| CN108223242B (en) | Axial force balance mechanism of FLNG hydraulic turbine and calculation method | |
| CN207178284U (en) | A kind of Pulp pump prevents shaft sealing leakage device | |
| CN102720696A (en) | Preheating water pump | |
| CN103438021A (en) | Labyrinth seal structure of air blower | |
| CN211082364U (en) | Sealing ring structure of equipment cooling water pump for nuclear power | |
| CN203420927U (en) | Blower labyrinth seal structure | |
| CN207975022U (en) | A kind of split type sealing structure of Pulp pump | |
| CN207004941U (en) | A kind of balancing drum mechanism of pump | |
| CN207648131U (en) | Gland | |
| CN207363940U (en) | A kind of new and effective submerged centrifugal pump | |
| CN210013858U (en) | Combined fan sealing structure | |
| CN205806036U (en) | A kind of anti-cavitation Pulp pump | |
| CN202326421U (en) | Rotation shell pump adopting non-plate rotor cover | |
| CN204591685U (en) | From cooling starch pump | |
| CN217633079U (en) | Mechanical sealing device of slurry pump | |
| CN109488635A (en) | A kind of mechanically-sealing apparatus for pump housing leakproof | |
| CN107288919A (en) | Corrosion-resistant single-stage list pump chamber water ring vacuum pump | |
| CN203948307U (en) | A kind of centrifugal pump of carrying for containing impurity liquid | |
| CN219691802U (en) | Centrifugal air compressor sealing structure capable of reducing axial force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |