CN211778175U - Self-priming pump impeller import sealing device - Google Patents

Self-priming pump impeller import sealing device Download PDF

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Publication number
CN211778175U
CN211778175U CN201922175467.0U CN201922175467U CN211778175U CN 211778175 U CN211778175 U CN 211778175U CN 201922175467 U CN201922175467 U CN 201922175467U CN 211778175 U CN211778175 U CN 211778175U
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sealing
pump
seal
pump body
cushion block
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CN201922175467.0U
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Chinese (zh)
Inventor
刘汉清
沈丹
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Jiangsu Double Wheel Pump Machinery Co ltd
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Jiangsu Double Wheel Pump Machinery Co ltd
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Abstract

The utility model discloses a self priming pump impeller inlet sealing device, which comprises a pump body, wherein an inlet flange is installed on the left side of the upper end of the pump body, a liquid adding bolt is connected on the left side of the upper end of the pump body, an outlet flange is connected on the upper end of the pump body, a gas-liquid separation pipe is connected in the pump body, a bearing body is connected on the right side of the pump body, a pump shaft is arranged in the bearing body, an impeller is installed inside the pump body by extending the left end of the pump shaft to the inside of the pump body, the impeller is positioned on the right side of the inside of the pump body, and sealing components; the utility model discloses a be equipped with seal assembly in the inside of the pump body, strengthen the sealing performance to the impeller, the totality leakproofness is better, has increased the clearance resistance and has made the liquid that the impeller was pumped in the course of the work reduce and let out leakage quantity to improve the volumetric efficiency of self priming pump, and connect between the overall structure closely, make this device mechanical properties stable.

Description

Self-priming pump impeller import sealing device
Technical Field
The utility model relates to a self priming pump technical field specifically is a self priming pump impeller import sealing device.
Background
The self-priming pump belongs to a special centrifugal pump, and can enter a pump which normally works after starting and then exhausting gas in a water inlet pipe for a certain time only by adding a certain amount of water into a pump body before starting for the first time without filling the water inlet pipe with water. The air-liquid mixing pump utilizes the air-liquid mixing principle and the special structure of the pump to realize air suction, forms a certain vacuum state in a suction pipeline of the pump, does not need to be attached with other special air suction devices, and can not guide water after being used every time except for water required for the first time. The centrifugal pump has the advantages of convenient use, reliable work, convenient remote centralized control, automatic operation and the like, thereby being widely applied to departments of ships, agriculture, municipal administration, electric power, mines, chemical industry and the like, being particularly suitable for occasions of flowing irrigation and drainage, moving work, frequent start, difficult liquid irrigation and the like, and having the tendency of gradually replacing the common centrifugal pump in ground water lifting.
However, in the actual working process of the self-priming pump, the sealing performance is weakened due to the fact that the pressure difference between the interior of the volute and the impeller inlet is large, and therefore the self-priming pump impeller inlet sealing device is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a self priming pump impeller import sealing device to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a self-priming pump impeller inlet sealing device comprises a pump body, wherein an inlet flange is installed on the left side of the upper end of the pump body, a liquid adding bolt is connected on the left side of the upper end of the pump body, an outlet flange is connected on the upper end of the pump body, a gas-liquid separation tube is connected inside the pump body, a bearing body is connected on the right side of the pump body, a pump shaft is arranged inside the bearing body, an impeller is installed in the pump body by extending the left end of the pump shaft to the inside of the pump body, the impeller is located on the right side of the inside of the pump body, sealing assemblies are respectively arranged on the left side and the right side of the impeller, each sealing assembly comprises a front cover, a rear cover, a first outer sealing shell, a second outer sealing shell, a sealing ring, a first sealing cushion block and a second sealing cushion block, the front cover and the rear cover are respectively located on the, the sealing ring is connected to the outer circles of the first sealing cushion block and the second sealing cushion block, the sealing ring is located on the inner sides of the front cover and the rear cover, the two sides of the inner side of the sealing ring are respectively connected with the inserting blocks, and the first outer sealing shell and the second outer sealing shell are respectively connected to the outer sides of the front cover and the outer side of the rear cover.
As a further optimization of the technical scheme, a check valve is installed at the joint between the inlet flange and the pump body, a mechanical seal is arranged at one end of the pump shaft, and the upper end of the pump shaft is further connected with a front bearing.
As a further optimization of the technical scheme, a rear bearing is arranged on the right side inside the bearing body, and a coupling is connected to the outer portion of the right end of the bearing body.
As a further optimization of the technical scheme, the inner sides of the first outer sealing shell and the second outer sealing shell are also provided with sealing rings, and the inner sides of the first outer sealing shell and the second outer sealing shell are connected to the outside of the pump body.
As a further optimization of the technical scheme, the first sealing cushion block and the second sealing cushion block are annular sealing cushion blocks, and annular grooves used for connecting the first sealing cushion block and the second sealing cushion block are respectively arranged in the front cover and the rear cover.
As a further optimization of the technical scheme, slots are respectively arranged outside the first sealing cushion block and the second sealing cushion block, and insertion blocks are inserted into the slots.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages that the sealing component is arranged in the pump body to enhance the sealing performance of the impeller, the first sealing cushion block and the second sealing cushion block are respectively arranged in the front cover and the rear cover to enhance the sealing performance, the sealing ring is connected with the outer circles of the first sealing cushion block and the second sealing cushion block to enhance the external sealing performance of the first sealing cushion block and the second sealing cushion block, the sealing ring is arranged in the front cover and the rear cover to enable the inner sides of the front cover and the rear cover to be well sealed, the first outer sealing shell and the second outer sealing shell are respectively connected with the outer sides of the front cover and the rear cover to seal the outer sides of the front cover and the rear cover, the overall sealing performance is better, the clearance resistance is increased to reduce the liquid pumped out by the impeller in the working process, thereby the volume efficiency of the self-priming pump is improved, and the connection between the whole structures is tight, the mechanical property of the device is stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the sealing assembly of the present invention;
fig. 3 is a structural schematic diagram of the sealing assembly according to the present invention.
In the figure: 1. an inlet flange; 2. a check valve; 3. a liquid adding bolt; 4. an outlet flange; 5. a pump body; 6. a gas-liquid separation pipe; 7. a rear cover; 8. an impeller; 9. mechanical sealing; 10. a pump shaft; 11. a front bearing; 12. a bearing body; 13. a rear bearing; 14. a coupling; 15. a front cover; 17. a second outer sealed shell; 18. a first outer sealed shell; 19. a seal ring; 20. a seal ring; 21. inserting a block; 22. a first seal cushion block; 23. a second seal cushion block; 25. and (4) a slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or state relationships based on the orientations or state relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that a designated mechanism or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a self-priming pump impeller inlet sealing device comprises a pump body 5, wherein an inlet flange 1 is installed on the left side of the upper end of the pump body 5, a liquid adding bolt 3 is connected on the left side of the upper end of the pump body 5, an outlet flange 4 is connected on the upper end of the pump body 5, a gas-liquid separation tube 6 is connected inside the pump body 5, a bearing body 12 is connected on the right side of the pump body 5, a pump shaft 10 is arranged inside the bearing body 12, an impeller 8 is installed on the left end of the pump shaft 10 extending to the inside of the pump body 5, the impeller 8 is located on the right side of the inside of the pump body 5, sealing assemblies are respectively arranged on the left side and the right side of the impeller 8 and comprise a front cover 15, a rear cover 7, a first outer sealing shell 18, a second outer sealing shell 17, a sealing ring 20, a first sealing cushion block 22 and a second sealing cushion block 23, the front, the first sealing cushion block 22 and the second sealing cushion block 23 are respectively installed inside the front cover 15 and the rear cover 7, the sealing ring 20 is connected to the first sealing cushion block 22 and the second sealing cushion block 23 in a circle, the sealing ring 20 is located on the inner sides of the front cover 15 and the rear cover 7, the insertion blocks 21 are further respectively connected to two sides of the inner side of the sealing ring 20, and the first outer sealing shell 18 and the second outer sealing shell 17 are respectively connected to the outer sides of the front cover 15 and the rear cover 7 through bolts.
Specifically, a check valve 2 is installed at a joint between the inlet flange 1 and the pump body 5, a mechanical seal 9 is arranged at one end of the pump shaft 10, and a front bearing 11 is further connected to the upper end of the pump shaft 10. Specifically, a rear bearing 13 is arranged on the right side inside the bearing body 12, and a coupling 14 is connected to the outside of the right end of the bearing body 12. Specifically, the inner sides of the first outer seal shell 18 and the second outer seal shell 17 are further provided with a seal ring 19, and the inner sides of the first outer seal shell 18 and the second outer seal shell 17 are connected to the outside of the pump body 5. Specifically, first sealing pad 22, second sealing pad 23 are annular sealing pad, the inside of protecgulum 15, back lid 7 is equipped with the annular that is used for connecting first sealing pad 22, second sealing pad 23 respectively, and the inboard inside promotion that comes the block from protecgulum 15, back lid 7, through the bolt fastening, strengthens the inside sealing performance of protecgulum 15, back lid 7. Specifically, the first sealing cushion block 22 and the second sealing cushion block 23 are respectively provided with a slot 25 at the outside, and the insertion block 21 is inserted into the slot 25, so that the connection tightness is increased, and the leakage is prevented. It should be noted that the pump body 5 in the present application is a ZW-P type stainless steel sewage self-priming pump in the prior art, and the connection relationship between the internal structures thereof is fully disclosed and is known to those skilled in the art, and will not be disclosed and described herein repeatedly.
Specifically, a further improvement is made on the structure of the existing self-priming pump, mainly by adding a sealing assembly. When the sealing device is used, the sealing assembly is arranged in the pump body 5 to enhance the sealing performance of the impeller 8, the sealing assembly is respectively arranged on the left side and the right side of the impeller 8, the front cover 15 and the rear cover 7 are respectively arranged on the left side and the right side of the impeller 8, the middle parts of the front cover 15 and the rear cover 7 are respectively provided with a water inlet and a water outlet, the sealing device is further provided with a first sealing cushion block 22 and a second sealing cushion block 23 which are respectively arranged in the front cover 15 and the rear cover 7 to enhance the sealing performance, the sealing ring 20 is connected to the first sealing cushion block 22 and the second sealing cushion block 23 in an outer circle, the external sealing performance of the first sealing cushion block 22 and the second sealing cushion block 23 is enhanced, the sealing ring 20 is positioned on the inner sides of the front cover 15 and the rear cover 7 to enable the inner sides of the front cover 15 and the rear cover 7 to be well sealed, the two inner sides of the sealing ring 20, The outer seal shell 17 of second connects respectively in the outside of protecgulum 15, hou gai 7, seals the outside of protecgulum 15, hou gai 7, and overall leakproofness is better, has increased the clearance resistance and has made the liquid that impeller 8 pumped in the course of the work reduced the leakage quantity to improve self priming pump's volumetric efficiency, and connect between the overall structure closely, make this device mechanical properties stable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a self priming pump impeller inlet sealing device, includes the pump body (5), inlet flange (1) is installed in the upper end left side of the pump body (5), the upper end left side of the pump body (5) is connected with liquid feeding bolt (3), the upper end of the pump body (5) is connected with outlet flange (4), the internal connection of the pump body (5) has gas-liquid separation pipe (6), its characterized in that: the right side of the pump body (5) is connected with a bearing body (12), the inside of the bearing body (12) is equipped with pump shaft (10), the internally mounted that the left end of pump shaft (10) extended to the pump body (5) has impeller (8), impeller (8) are located the inside right side of the pump body (5), the left side and the right side of impeller (8) are equipped with seal assembly respectively, seal assembly includes protecgulum (15), back lid (7), first outer seal shell (18), second outer seal shell (17), sealing washer (20), first seal cushion block (22), second seal cushion block (23), protecgulum (15), back lid (7) are located the left and right sides of impeller (8) respectively, install in the inside of protecgulum (15), back lid (7) respectively in first seal cushion block (22), second seal cushion block (23), sealing washer (20) are connected in first seal cushion block (22), The outside round of second seal cushion (23), sealing washer (20) are located the inboard of protecgulum (15), back lid (7), the inboard both sides of sealing washer (20) still are connected with inserted block (21) respectively, first outer seal shell (18), second outer seal shell (17) are connected respectively in the outside of protecgulum (15), back lid (7).
2. The self-primer pump impeller inlet seal of claim 1 wherein: the pump is characterized in that a check valve (2) is installed at the joint between the inlet flange (1) and the pump body (5), a mechanical seal (9) is arranged at one end of the pump shaft (10), and a front bearing (11) is further connected to the upper end of the pump shaft (10).
3. The self-primer pump impeller inlet seal of claim 1 wherein: the right side of the inside of the bearing body (12) is provided with a rear bearing (13), and the right end of the bearing body (12) is externally connected with a coupling (14).
4. The self-primer pump impeller inlet seal of claim 1 wherein: the inner sides of the first outer sealing shell (18) and the second outer sealing shell (17) are further provided with sealing rings (19), and the inner sides of the first outer sealing shell (18) and the second outer sealing shell (17) are connected to the outside of the pump body (5).
5. The self-primer pump impeller inlet seal of claim 1 wherein: the first sealing cushion block (22) and the second sealing cushion block (23) are annular sealing cushion blocks, and annular grooves used for being connected with the first sealing cushion block (22) and the second sealing cushion block (23) are respectively formed in the front cover (15) and the rear cover (7).
6. The self-primer pump impeller inlet seal of claim 1 wherein: the outer parts of the first sealing cushion block (22) and the second sealing cushion block (23) are respectively provided with a slot (25), and an inserting block (21) is inserted into the slot (25).
CN201922175467.0U 2019-12-08 2019-12-08 Self-priming pump impeller import sealing device Active CN211778175U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922175467.0U CN211778175U (en) 2019-12-08 2019-12-08 Self-priming pump impeller import sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922175467.0U CN211778175U (en) 2019-12-08 2019-12-08 Self-priming pump impeller import sealing device

Publications (1)

Publication Number Publication Date
CN211778175U true CN211778175U (en) 2020-10-27

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Application Number Title Priority Date Filing Date
CN201922175467.0U Active CN211778175U (en) 2019-12-08 2019-12-08 Self-priming pump impeller import sealing device

Country Status (1)

Country Link
CN (1) CN211778175U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059620A (en) * 2022-06-20 2022-09-16 安徽埃斯克制泵有限公司 Full-automatic vacuum self-priming pump system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115059620A (en) * 2022-06-20 2022-09-16 安徽埃斯克制泵有限公司 Full-automatic vacuum self-priming pump system

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