CN215979958U - Clean centrifugal pump - Google Patents
Clean centrifugal pump Download PDFInfo
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- CN215979958U CN215979958U CN202121818732.3U CN202121818732U CN215979958U CN 215979958 U CN215979958 U CN 215979958U CN 202121818732 U CN202121818732 U CN 202121818732U CN 215979958 U CN215979958 U CN 215979958U
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- centrifugal pump
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Abstract
The utility model discloses a clean centrifugal pump, and belongs to the technical field of centrifugal pumps. The clean centrifugal pump comprises a pump body and a motor, wherein the pump body comprises a main shaft, an impeller, a shell and a cover plate, an external mechanical seal is arranged between the shell and the cover plate, one end of the main shaft is fixedly connected with the impeller, the other end of the main shaft is connected with a motor main shaft through a coupler, a main shaft guide groove is formed in the outer edge of one end, connected with the impeller, of the main shaft, and an impeller guide groove is formed in one side, facing the main shaft, of a blade of the impeller. The external mechanical sealing structure of the centrifugal pump has high sealing performance and high safety, and can prevent crystals from being separated out and prevent foreign matters in a pipeline from entering the pump body to damage the centrifugal pump; meanwhile, the main shaft guide groove and the impeller guide groove are beneficial to the flow of materials and can effectively prevent the materials from being blocked; the centrifugal pump is easy to clean, can clean fine residues, and has good cleaning performance.
Description
Technical Field
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a clean centrifugal pump.
Background
In the food, beverage, medical and brewing industries, the sanitary centrifugal pump has wide application, most of materials are transported by the sanitary centrifugal pump, and therefore the sanitary centrifugal pump is an indispensable important mechanical device.
The sanitary centrifugal pump in the prior art usually adopts an external or internal mechanical seal, and both the two mechanical seal modes have certain disadvantages:
for the sanitary centrifugal pump with the external mechanical seal, the centrifugal pump has less contact with conveyed materials, once the centrifugal pump is damaged, the centrifugal pump can be found and maintained In time, the materials are not easy to pollute, the sealing mode has sanitary dead angles, CIP (clean In Place) Cleaning is not suitable to be carried out, the sealing position is blocked due to the fact that the CIP Cleaning is not carried out for a long time In partial working conditions, and the mechanical seal is easy to damage, so that the sealing property is influenced;
for a sanitary centrifugal pump with a built-in mechanical seal, the centrifugal pump can be in full contact with conveyed materials, CIP cleaning is convenient, cleaning time is short, and the sanitary centrifugal pump has higher cleanness.
Therefore, whether the external mechanical seal or the internal mechanical seal is adopted, certain technical problems exist, and the requirements of actual production are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a clean centrifugal pump to solve the technical problems in the background technology.
In order to achieve the purpose, the utility model discloses a clean centrifugal pump which comprises a pump body and a motor, wherein the pump body comprises a main shaft, an impeller, a shell and a cover plate, the shell and the cover plate are fixedly connected outside the clean centrifugal pump to form an external mechanical seal, and the external mechanical seal is high in safety and sealing performance. Wherein, the impeller is an open impeller.
The shell and the cover plate are fixedly connected to form a cavity in the shell, the impeller is positioned in the cavity formed between the shell and the cover plate, an impeller through hole is formed in the center of the impeller, a cover plate through hole is formed in the center of the cover plate, and the impeller through hole and the cover plate through hole are coaxially arranged;
one end of the main shaft penetrates through the cover plate through hole from the outside of the cover plate and then is inserted into the impeller through hole to be connected with the impeller, and the other end of the main shaft is connected with a motor rotating shaft;
the outer edge of one end of the main shaft, which is connected with the impeller, is provided with a main shaft diversion trench, and one side of the blade of the impeller, which faces the main shaft, is provided with an impeller diversion trench; the arrangement of the main shaft guide groove and the impeller guide groove is beneficial to the flowing of materials and can effectively prevent the materials from being blocked.
A water inlet is arranged at the central position corresponding to the impeller through hole on the axial end surface of the shell, and a water outlet is arranged in the radial direction of the shell; the water inlet is connected with one side of the blade of the impeller, which is not provided with the impeller flow guide groove; the water outlet is connected with one side of the blade of the impeller, which is provided with an impeller diversion trench.
Furthermore, the main shaft guide groove and the main shaft are axially arranged in an inclined mode, and the impeller guide groove is radially arranged outwards from the center of the impeller.
Furthermore, the impeller through hole is square, one end of the main shaft, which is connected with the impeller, is of a standard square head structure, and the standard square head structure is inserted into the impeller through hole from one side, on which impeller guide grooves are arranged, of the blades of the impeller and is connected with the impeller; and a shaft cap is arranged on one side of the impeller, which is far away from the main shaft, and the shaft cap is inserted into the through hole of the impeller and connected with the standard square head structure on the main shaft.
Furthermore, a motor housing is arranged outside the motor, and the motor housing is erected on the ground through motor housing supporting legs.
Furthermore, each blade of the impeller is provided with an impeller flow guide groove, and the number of the impeller flow guide grooves, the number of the impeller blades and the number of the main shaft flow guide grooves are equal.
Further, a first sealing washer is arranged between the shaft cap and the standard square head structure of the main shaft.
Furthermore, a pump body support is arranged between the pump body and the motor housing, the cover plate is connected with the motor housing through the pump body support, one end of the pump body support is connected with the cover plate through a fastening bolt, and the other end of the pump body support is fixed on the motor housing through a fastening bolt.
Further, a second sealing washer is arranged between the cover plate and the pump body bracket.
Furthermore, the other end of the main shaft connected with the impeller is connected with a motor main shaft through a coupler.
Further, the motor spindle extends out of the interior of the motor housing and enters the interior of the pump body support, the coupler is located inside the pump body support, one end of the coupler is connected with the motor spindle, and the other end of the coupler is connected with the spindle.
Compared with the prior art, the clean centrifugal pump has the following advantages:
(1) the clean centrifugal pump is an external mechanical sealing structure, has high sealing performance and high safety, can observe the permeation condition of the centrifugal pump, and solves the problems that crystals are separated out, foreign matters in a pipeline enter the pump to damage the pump and the like.
(2) The clean centrifugal pump of the utility model selects the open impeller, is easy to clean, and can clean the residue in the small gap between the impeller and the cover plate.
(3) The impeller diversion groove is arranged on the impeller, the main shaft diversion groove is arranged on the main shaft, the flow of liquid materials is facilitated, the cleaning is facilitated, and the cleanness of the centrifugal pump is ensured.
Drawings
FIG. 1: the three-dimensional structure of the clean centrifugal pump in the embodiment 1 is schematically shown.
FIG. 2: the three-dimensional explosion structure of the pump body of the clean centrifugal pump in the embodiment 1 is schematically shown.
FIG. 3: the partial sectional structure of the pump body of the clean centrifugal pump in the embodiment 1 is schematically shown.
FIG. 4: fig. 3 is a partially enlarged schematic view of a region a.
FIG. 5: the connection structure of the impeller and the main shaft of the clean centrifugal pump in the embodiment 1 is schematically shown.
FIG. 6: the main shaft of the clean centrifugal pump in the embodiment 1 has a schematic three-dimensional structure.
FIG. 7: the three-dimensional structure of the impeller of the clean centrifugal pump in the embodiment 1 is schematically shown.
Description of reference numerals: 1-a pump body; 2-motor housing; 3-motor housing support legs; 4-pump body support; 5-a coupler; 11-a main shaft; 12-an impeller; 13-a housing; 14-a cover plate; 21-a motor rotating shaft; 121-impeller guiding gutter; 111-main shaft guiding gutter; 15-a shaft cap; 16-a first sealing gasket; 17-a second sealing gasket; 131-a water inlet; 132-water outlet.
Detailed Description
The technical solution of the present invention will be described in detail by the following specific examples.
Example 1
As shown in fig. 1 to 7, the overall and partial structural schematic diagram of the clean centrifugal pump in embodiment 1 is given.
The clean centrifugal pump comprises a pump body 1 and a motor, wherein the pump body 1 comprises a main shaft 11, an impeller 12, a shell 13 and a cover plate 14; the shell 13 and the cover plate 14 are fixedly connected with each other outside the clean centrifugal pump through bolts and nuts to form an external mechanical seal;
the casing 13 and the cover plate 14 are fixedly connected to form a cavity inside, the impeller 12 is located in the cavity formed between the casing 13 and the cover plate 14, an impeller through hole is formed in the center of the impeller 12, a cover plate through hole is formed in the center of the cover plate 14, the impeller through hole and the cover plate through hole are coaxially arranged, one end of the main shaft 11 penetrates through the cover plate through hole from the outside of the cover plate 14 and then is inserted into the impeller through hole to be connected with the impeller 12, and the other end of the main shaft is connected with the motor rotating shaft 21 through the coupling 5.
A main shaft guide groove 111 is formed in the outer edge of one end of the main shaft 11 connected to the impeller 12, and an impeller guide groove 121 is formed in one side of the blade of the impeller 12 facing the main shaft 11.
The main shaft guiding groove 111 and the main shaft 11 are axially and obliquely arranged, and the impeller guiding groove 121 is radially arranged outwards from the center of the impeller 12; each blade of the impeller 12 is provided with an impeller guiding groove 121, and the number of the impeller guiding grooves 121, the number of the impeller blades, and the number of the main shaft guiding grooves 111 are equal. In this embodiment 1, the impeller 12 is an open impeller, the number of blades on the impeller 12 is 4, and each blade is provided with an impeller guiding groove 121.
The impeller through hole is square, one end of the main shaft 11 connected with the impeller 12 is of a standard square head structure, and the standard square head structure is inserted into the impeller through hole from one side of the blade of the impeller 12, which is provided with an impeller guide groove 121, and is connected with the impeller 12; a shaft cap 15 is arranged on one side of the impeller 12 far away from the main shaft 11, the shaft cap 15 is inserted into the through hole of the impeller and connected with the standard square head structure on the main shaft 11, and a first sealing gasket 16 is arranged between the shaft cap 15 and the standard square head structure of the main shaft 11.
The motor is characterized in that a motor housing 2 is arranged outside the motor, and the motor housing 2 stands on the ground through motor housing support legs 3.
The cover plate 14 is connected with the motor housing 2 through the pump body bracket 4, one end of the pump body bracket 4 is connected with the cover plate 14 through a fastening bolt, and the other end of the pump body bracket 4 is fixed on the motor housing 2 through the fastening bolt; a second sealing gasket 17 is provided between the cover 14 and the pump block support 4.
The motor spindle 21 extends from the inside of the motor cover shell 2 and enters the inside of the pump body support 4, the coupler 5 is located inside the pump body support 4, one end of the coupler 5 is connected with the motor spindle 21, and the other end of the coupler is connected with the spindle 11.
A water inlet 131 is arranged at the central position corresponding to the impeller through hole on the axial end surface of the shell 13, and a water outlet 132 is arranged in the radial direction of the shell 13; the water inlet 131 is connected with one side of the blade of the impeller 12, which is not provided with the impeller guiding groove 121; the water outlet 132 is connected to one side of the impeller 12 on which the impeller guide groove 121 is formed.
The clean centrifugal pump of embodiment 1, when in use, comprises the following steps:
(1) connecting a water inlet 131 of the centrifugal pump with a feeding pipeline, and starting a motor;
(2) the rotation of the motor drives the motor rotating shaft 21 to rotate, the rotation of the motor rotating shaft 21 drives the impeller 12 to rotate, the rotation of the impeller 12 generates centrifugal force, materials enter the shell 13 of the centrifugal pump under the action of the centrifugal force, the water pressure in the center of the impeller 12 is reduced and is lower than the pressure in the feeding pipeline to form pressure difference, and the materials continuously enter the shell 13 of the centrifugal pump under the action of the pressure difference;
(3) the material entering the centrifugal pump housing 131 through the water inlet 131 enters one side of the blade, which is provided with the impeller guiding groove 121, through the impeller 12, passes through the main shaft guiding groove 111 and the impeller guiding groove 121 under the rotation action of the impeller 12, and flows into the pipeline to be conveyed through the water outlet 132 of the centrifugal pump, so that the material is sucked.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a clean type centrifugal pump, includes the pump body and motor, its characterized in that: the pump body comprises a main shaft, an impeller, a shell and a cover plate, wherein the shell and the cover plate are fixedly connected outside the clean centrifugal pump;
the shell and the cover plate are fixedly connected to form a cavity in the shell, the impeller is positioned in the cavity formed between the shell and the cover plate, an impeller through hole is formed in the center of the impeller, a cover plate through hole is formed in the center of the cover plate, and the impeller through hole and the cover plate through hole are coaxially arranged;
one end of the main shaft penetrates through the cover plate through hole from the outside of the cover plate and then is inserted into the impeller through hole to be connected with the impeller, and the other end of the main shaft is connected with a motor rotating shaft;
the outer edge of one end of the main shaft, which is connected with the impeller, is provided with a main shaft diversion trench, and one side of the blade of the impeller, which faces the main shaft, is provided with an impeller diversion trench;
a water inlet is arranged at the central position corresponding to the impeller through hole on the axial end surface of the shell, and a water outlet is arranged in the radial direction of the shell; the water inlet is connected with one side of the blade of the impeller, which is not provided with the impeller flow guide groove; the water outlet is connected with one side of the blade of the impeller, which is provided with an impeller diversion trench.
2. The clean centrifugal pump of claim 1, wherein: the main shaft guide groove and the main shaft are axially and obliquely arranged, and the impeller guide groove is radially arranged outwards from the center of the impeller.
3. The clean centrifugal pump of claim 1, wherein: the impeller through hole is square, one end of the main shaft, which is connected with the impeller, is of a standard square head structure, and the standard square head structure is inserted into the impeller through hole from one side, on which impeller guide grooves are arranged, of the blades of the impeller and is connected with the impeller; and a shaft cap is arranged on one side of the impeller, which is far away from the main shaft, and the shaft cap is inserted into the through hole of the impeller and connected with the standard square head structure on the main shaft.
4. The clean centrifugal pump of claim 1, wherein: the motor is characterized in that a motor housing is arranged outside the motor and stands on the ground through motor housing supporting legs.
5. The clean centrifugal pump of claim 2, wherein: each blade of the impeller is provided with an impeller flow guide groove, and the number of the impeller flow guide grooves, the number of the impeller blades and the number of the main shaft flow guide grooves are equal.
6. A clean centrifugal pump as claimed in claim 3, wherein: a first sealing washer is arranged between the shaft cap and the standard square head structure of the main shaft.
7. The clean centrifugal pump of claim 4, wherein: a pump body support is arranged between the pump body and the motor housing, the cover plate is connected with the motor housing through the pump body support, one end of the pump body support is connected with the cover plate through a fastening bolt, and the other end of the pump body support is fixed on the motor housing through a fastening bolt.
8. The clean centrifugal pump of claim 7, wherein: and a second sealing washer is arranged between the cover plate and the pump body bracket.
9. The clean centrifugal pump of claim 7, wherein: the other end of the main shaft connected with the impeller is connected with the motor main shaft through a coupler.
10. The clean centrifugal pump of claim 9, wherein: the motor spindle extends out of the interior of the motor housing and enters the interior of the pump body support, the coupler is located inside the pump body support, one end of the coupler is connected with the motor spindle, and the other end of the coupler is connected with the spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121818732.3U CN215979958U (en) | 2021-08-05 | 2021-08-05 | Clean centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121818732.3U CN215979958U (en) | 2021-08-05 | 2021-08-05 | Clean centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215979958U true CN215979958U (en) | 2022-03-08 |
Family
ID=80575077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121818732.3U Active CN215979958U (en) | 2021-08-05 | 2021-08-05 | Clean centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215979958U (en) |
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2021
- 2021-08-05 CN CN202121818732.3U patent/CN215979958U/en active Active
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