CN221322733U - Centrifugal pump with self-priming function - Google Patents
Centrifugal pump with self-priming function Download PDFInfo
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- CN221322733U CN221322733U CN202323530467.0U CN202323530467U CN221322733U CN 221322733 U CN221322733 U CN 221322733U CN 202323530467 U CN202323530467 U CN 202323530467U CN 221322733 U CN221322733 U CN 221322733U
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- centrifugal pump
- self
- priming
- shell
- water inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000002184 metal Substances 0.000 claims description 5
- 230000037452 priming Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Abstract
The utility model belongs to the technical field of water pumps, in particular to a centrifugal pump with a self-priming function, which comprises a centrifugal pump shell with a water inlet channel and a water outlet channel, wherein an impeller is arranged in the centrifugal pump shell, the water inlet channel is connected with a self-priming shell positioned at the outer side of the centrifugal pump shell, the self-priming shell and the centrifugal pump shell are of a split type structure, an inner cavity of the self-priming shell is a self-priming cavity communicated with the inner cavity of the centrifugal pump shell, a water inlet communicated with a water inlet pipe and a water outlet communicated with the water inlet channel are arranged on the self-priming shell, and a check valve for preventing water in the self-priming cavity from flowing to the water inlet pipe is arranged at the water inlet. The centrifugal pump has the self-priming function, small workload and short starting time.
Description
Technical field:
the utility model belongs to the technical field of water pumps, and particularly relates to a centrifugal pump with a self-priming function.
The background technology is as follows:
The common centrifugal pump does not have the self-priming function, so that the water inlet pipe and the pump are required to be filled with liquid in order to ensure the normal operation of the centrifugal pump, namely, the water needs to be filled into the water inlet pipe and the pump before each start, the workload is large, and the start time is long.
The invention comprises the following steps:
the utility model aims to provide a centrifugal pump with a self-priming function, which has the advantages of self-priming function, small workload and short starting time.
The utility model is realized in the following way:
The utility model provides a centrifugal pump with from inhaling function, includes the centrifugal pump shell that has inlet channel and outlet channel, be equipped with the impeller in the centrifugal pump shell, inlet channel department is connected with the self priming shell that is located the centrifugal pump shell outside, self priming shell and centrifugal pump shell are split type structure, the inner chamber of self priming shell is the self priming chamber with the centrifugal pump shell inner chamber intercommunication, be equipped with the water inlet of intercommunication inlet tube and the delivery port of intercommunication inlet channel on the self priming shell, water inlet department is equipped with the check valve that prevents to flow to the inlet tube from the water of self priming intracavity.
In the centrifugal pump with self-priming function, the self-priming shell comprises a self-priming shell with an opening at one end and a self-priming cover arranged on the opening of the self-priming shell, the water outlet is arranged at one end of the self-priming shell close to the water inlet channel, a pipeline is arranged on the self-priming cover, one end of the pipeline is connected with the water inlet pipe, and the other end of the pipeline is provided with the water inlet.
In the centrifugal pump with self-priming function, the check valve comprises a rubber sheet seat arranged between the self-priming shell and the self-priming cover, a rubber valve sheet covered at the water inlet and a rubber connecting block connected with the rubber sheet seat and the rubber valve sheet, wherein the rubber connecting block is arranged above the rubber valve sheet, and a metal sheet core is embedded in the rubber valve sheet.
In the centrifugal pump with the self-priming function, the pipeline is a circular pipe, and the metal sheet core is a circular steel sheet.
In the centrifugal pump with the self-priming function, one end of the pipeline extends into the self-priming cavity, the other end of the pipeline is provided with the water inlet nozzle, the water inlet nozzle is connected with the water inlet pipe, and the rubber valve plate cover is arranged at the end part of the pipeline extending into the self-priming cavity.
In the centrifugal pump with the self-priming function, the first flange is arranged at one end of the pipeline, which is close to the water inlet nozzle, the second flange is arranged at one end of the water inlet nozzle, which is close to the pipeline, and the first flange and the second flange are fixedly connected through screws.
In the centrifugal pump with the self-priming function, the self-priming shell is connected to the pump shell of the centrifugal pump through a screw, the self-priming cover is connected to the self-priming shell through a screw, and the pipeline and the self-priming cover are of an integrated structure.
In the centrifugal pump with self-priming function, the centrifugal pump shell comprises a centrifugal pump shell with one end open and a centrifugal pump cover body covered on the opening of the centrifugal pump shell, the water inlet channel is arranged at one end of the centrifugal pump shell far away from the opening, the impeller is arranged in the centrifugal pump shell, a rotating shaft mounting hole is arranged on the centrifugal pump cover body, a gap for mounting a bearing and mechanical sealing is reserved between the centrifugal pump cover body and the impeller, a baffle sleeved on a hub of the impeller is arranged between the centrifugal pump shell and the centrifugal pump cover body, a shell cavity is formed between the baffle and the centrifugal pump shell body, a cover body cavity is formed between the baffle and the centrifugal pump cover body, and a front cover plate, a rear cover plate and blades of the impeller are all arranged in the shell cavity.
In the centrifugal pump with the self-priming function, the water inlet channel and the water outlet channel are both arranged on the centrifugal pump shell.
In the centrifugal pump with the self-priming function, the annular mounting part sleeved outside the centrifugal pump shell is arranged at the opening end of the centrifugal pump shell, the annular mounting convex edge is arranged outside the centrifugal pump shell, the screw penetrates through the annular mounting convex edge to be in screwed connection with the annular mounting part, and the baffle is provided with the annular groove for avoiding the centrifugal pump shell.
In the centrifugal pump with the self-priming function, a volute flow passage is integrally formed in the centrifugal pump shell, and the impeller is a closed impeller.
In the centrifugal pump with the self-priming function, the water outlet channel is connected with one end of the bent pipe, the other end of the bent pipe is connected with one end of the water outlet nozzle, and the other end of the water outlet nozzle is connected with the water outlet pipe.
Compared with the prior art, the utility model has the outstanding advantages that:
1. according to the utility model, the self-priming function is realized by arranging the self-priming cavity and the check valve, so that the pump shell of the centrifugal pump is only required to be irrigated before the first starting, the water inlet pipe is not required to be filled with water, the workload is small, and the starting time is short; the self-priming shell is arranged on the outer side of the centrifugal pump shell, the self-priming shell and the centrifugal pump shell are of a split structure, and the casting difficulty and the cost of the centrifugal pump shell and the self-priming shell are low;
2. According to the centrifugal pump, the baffle plate sleeved on the hub of the impeller is arranged between the centrifugal pump shell and the centrifugal pump cover body, the shell cavity is formed between the baffle plate and the centrifugal pump shell, the cover body cavity is formed between the baffle plate and the centrifugal pump cover body, the working space of the impeller can be effectively reduced, the hydraulic area is reduced, and the running efficiency of the centrifugal pump is effectively improved.
Description of the drawings:
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is an exploded view of the present utility model;
Fig. 4 is a perspective view of a baffle of the present utility model.
Reference numerals: 1. a water inlet channel; 2. a water outlet channel; 3. a centrifugal pump housing; 3a, a centrifugal pump shell; 3b, a centrifugal pump cover body; 4. an impeller; 4a, a hub; 5. self-priming shell; 5a, self-priming shell; 5b, self-priming caps; 5c, a pipeline; 6. a self-priming chamber; 7. a water inlet; 8. a water outlet; 9. a check valve; 9a, a rubber sheet seat; 9b, a rubber valve plate; 9c, a rubber connecting block; 10. a water inlet nozzle; 11. a first flange plate; 12. a second flange plate; 13. a shaft mounting hole; 14. a baffle; 15. a housing chamber; 16. a cover chamber; 17. an annular mounting portion; 18. annular mounting convex edges; 19. an annular groove; 20. a volute flow path; 21. bending the pipe; 22. a water outlet nozzle.
The specific embodiment is as follows:
The utility model is further described below with reference to the specific examples, see fig. 1-4:
The utility model provides a centrifugal pump with from inhaling function, includes centrifugal pump case 3 that has inlet channel 1 and play water channel 2, be equipped with impeller 4 in the centrifugal pump case 3, inlet channel 1 department is connected with the self priming shell 5 that is located the centrifugal pump case 3 outside, self priming shell 5 and centrifugal pump case 3 are split type structure, the inner chamber of self priming shell 5 is the self priming chamber 6 with the inner chamber intercommunication of centrifugal pump case 3, be equipped with the water inlet 7 of intercommunication inlet tube and the delivery port 8 of intercommunication inlet channel 1 on the self priming shell 5, water inlet 7 department is equipped with the check valve 9 that prevents the water flow direction from the interior water of self priming chamber 6 inlet tube.
The working principle of the utility model is as follows: as shown in fig. 1-3, the pump is irrigated before the first start, the impeller 4 in the centrifugal pump shell 3 rotates to form negative pressure, and water is sucked into the self-priming shell 5 through the water inlet pipe and the water inlet 7 under the action of pressure difference and then enters the centrifugal pump shell 3 through the water outlet 8 and the water inlet channel 1. The check valve 9 is arranged to form a closed space between the inner cavity of the centrifugal pump shell 3 and the self-priming cavity 6, so that water can be conveniently sucked into the self-priming cavity 6.
As shown in fig. 1-3, the self-priming function is realized by arranging the self-priming cavity 6 and the check valve 9, so that the centrifugal pump shell 3 is only required to be irrigated before the first start, the water inlet pipe is not required to be filled with water, the workload is small, and the start time is short; the self-priming shell 5 is arranged on the outer side of the centrifugal pump shell 3, the self-priming shell 5 and the centrifugal pump shell 3 are of a split structure, and the centrifugal pump shell 3 and the self-priming shell 5 are low in casting difficulty and low in cost.
The structure of the self-priming shell 5: as shown in fig. 1-3, the self-priming shell 5 includes a self-priming shell 5a with an opening at one end and a self-priming cover 5b covering the opening of the self-priming shell 5a, the water outlet 8 is arranged at one end of the self-priming shell 5a close to the water inlet channel 1, a pipeline 5c is arranged on the self-priming cover 5b, one end of the pipeline 5c is connected with a water inlet pipe, the other end of the pipeline is provided with the water inlet 7, and the self-priming shell 5 is simple in structure and convenient to install.
The structure of the check valve 9: as shown in fig. 2 and 3, the check valve 9 includes a rubber sheet seat 9a disposed between the self-suction housing 5a and the self-suction cover 5b, a rubber sheet 9b covering the water inlet 7, and a rubber connection block 9c connecting the rubber sheet seat 9a and the rubber sheet 9b, the rubber connection block 9c is disposed above the rubber sheet 9b, and a metal sheet core is embedded in the rubber sheet 9b, so that the check valve 9 is simple in structure and convenient to install.
Further, the pipe 5c is a circular pipe, and the metal sheet core is a circular steel sheet.
In order to be convenient for be connected with the inlet tube, pipeline 5c one end stretches into from inhaling chamber 6, and the other end is equipped with water inlet nozzle 10, water inlet nozzle 10 connects the inlet tube, rubber valve block 9b cover is established and is stretched into from the tip in inhaling chamber 6 at pipeline 5 c.
Connection structure of the pipe 5c and the water inlet nozzle 10: as shown in fig. 1-3, a first flange 11 is arranged at one end of the pipeline 5c close to the water inlet nozzle 10, a second flange 12 is arranged at one end of the water inlet nozzle 10 close to the pipeline 5c, and the first flange 11 and the second flange 12 are fixedly connected through screws.
Mounting structure of self-priming housing 5a and centrifugal pump housing 3: the self-priming housing 5a is screwed to the centrifugal pump housing 3.
Mounting structure of the self-priming cap 5b and the self-priming housing 5 a: the self-priming cap 5b is connected to the self-priming housing 5a by screws.
Structure of the duct 5c and the self-priming cap 5 b: the pipeline 5c and the self-priming cover 5b are of an integrated structure.
The centrifugal pump casing 3 has a structure: the centrifugal pump casing 3 comprises a centrifugal pump casing 3a with an opening at one end and a centrifugal pump cover body 3b arranged on the opening of the centrifugal pump casing 3a in a covering manner, the water inlet channel 1 is arranged at one end of the centrifugal pump casing 3a far away from the opening, the impeller 4 is arranged in the centrifugal pump casing 3a, a rotating shaft mounting hole 13 is arranged on the centrifugal pump cover body 3b, a gap for mounting a bearing and mechanical sealing is reserved between the centrifugal pump cover body 3b and the impeller 4, a baffle 14 sleeved on a hub 4a of the impeller 4 is arranged between the centrifugal pump casing 3a and the centrifugal pump cover body 3b, a casing cavity 15 is formed between the baffle 14 and the centrifugal pump cover body 3a, a cover body cavity 16 is formed between the baffle 14 and the centrifugal pump cover body 3b, and a front cover plate, a rear cover plate and blades of the impeller 4 are all arranged in the casing cavity 15. The baffle 14 can effectively reduce the working space of the impeller 4, reduce the hydraulic area and effectively improve the operation efficiency of the centrifugal pump.
Further, the water inlet channel 1 and the water outlet channel 2 are arranged on the centrifugal pump housing 3 a.
Connection structure of centrifugal pump housing 3a and centrifugal pump cover 3 b: as shown in fig. 2-4, the open end of the centrifugal pump housing 3a is provided with an annular mounting portion 17 sleeved outside the centrifugal pump housing 3a, an annular mounting flange 18 is arranged outside the centrifugal pump cover 3b, a screw penetrates through the annular mounting flange 18 and is screwed with the annular mounting portion 17, and an annular groove 19 for avoiding the centrifugal pump housing 3a is formed in the baffle 14.
Further, a volute flow channel 20 is integrally formed in the centrifugal pump housing 3a, and the impeller 4 is a closed impeller. The volute flow channel 20 directs the water flow from the impeller 4 to the water outlet channel 2.
Further, the water outlet channel 2 is connected with one end of the bent pipe 21, the other end of the bent pipe 21 is connected with one end of the water outlet nozzle 22, and the other end of the water outlet nozzle 22 is connected with a water outlet pipe.
The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (9)
1. The utility model provides a centrifugal pump with from inhaling function, includes centrifugal pump shell (3) that have inlet channel (1) and play water channel (2), be equipped with impeller (4) in centrifugal pump shell (3), its characterized in that: the centrifugal pump is characterized in that the water inlet channel (1) is connected with a self-suction shell (5) positioned on the outer side of the centrifugal pump shell (3), the self-suction shell (5) and the centrifugal pump shell (3) are of a split type structure, an inner cavity of the self-suction shell (5) is a self-suction cavity (6) communicated with the inner cavity of the centrifugal pump shell (3), a water inlet (7) communicated with a water inlet pipe and a water outlet (8) communicated with the water inlet channel (1) are arranged on the self-suction shell (5), and a check valve (9) for preventing water in the self-suction cavity (6) from flowing to the water inlet pipe is arranged at the water inlet (7).
2. A centrifugal pump with self-priming function according to claim 1, wherein: the self-priming shell (5) comprises a self-priming shell (5 a) with one end open and a self-priming cover (5 b) covered on the opening of the self-priming shell (5 a), the water outlet (8) is arranged at one end of the self-priming shell (5 a) close to the water inlet channel (1), a pipeline (5 c) is arranged on the self-priming cover (5 b), one end of the pipeline (5 c) is connected with the water inlet pipe, and the other end of the pipeline (5 c) is provided with the water inlet (7).
3. A centrifugal pump with self-priming function according to claim 2, wherein: the check valve (9) comprises a rubber sheet seat (9 a) arranged between the self-suction shell (5 a) and the self-suction cover (5 b), a rubber sheet (9 b) covered on the water inlet (7) and a rubber connecting block (9 c) connected with the rubber sheet seat (9 a) and the rubber sheet (9 b), wherein the rubber connecting block (9 c) is arranged above the rubber sheet (9 b), and a metal sheet core is embedded in the rubber sheet (9 b).
4. A centrifugal pump with self-priming function according to claim 3, wherein: one end of the pipeline (5 c) extends into the self-priming cavity (6), a water inlet nozzle (10) is arranged at the other end of the pipeline, the water inlet nozzle (10) is connected with a water inlet pipe, and the end part of the pipeline (5 c) extending into the self-priming cavity (6) is covered by the rubber valve plate (9 b).
5. A centrifugal pump with self-priming function according to claim 4, wherein: one end of the pipeline (5 c) close to the water inlet nozzle (10) is provided with a first flange plate (11), one end of the water inlet nozzle (10) close to the pipeline (5 c) is provided with a second flange plate (12), and the first flange plate (11) and the second flange plate (12) are fixedly connected through screws.
6. A centrifugal pump with self-priming function according to claim 2, wherein: the self-priming shell (5 a) is connected to the centrifugal pump shell (3) through a screw, the self-priming cover (5 b) is connected to the self-priming shell (5 a) through a screw, and the pipeline (5 c) and the self-priming cover (5 b) are of an integrated structure.
7. A centrifugal pump with self-priming function according to claim 1, wherein: the centrifugal pump casing (3) comprises a centrifugal pump casing (3 a) with one end being opened and a centrifugal pump cover body (3 b) which is covered on the opening of the centrifugal pump casing (3 a), the water inlet channel (1) is arranged at one end of the centrifugal pump casing (3 a) far away from the opening, the impeller (4) is arranged in the centrifugal pump casing (3 a), a rotating shaft mounting hole (13) is formed in the centrifugal pump cover body (3 b), a gap for mounting a bearing and a mechanical seal is reserved between the centrifugal pump cover body (3 b) and the impeller (4), a baffle plate (14) which is sleeved on a hub (4 a) of the impeller (4) is arranged between the centrifugal pump casing (3 a) and the centrifugal pump cover body (3 b), a casing cavity (15) is formed between the baffle plate (14) and the centrifugal pump casing (3 a), and a cover body cavity (16) is formed between the baffle plate (14) and the centrifugal pump cover body (3 b).
8. A centrifugal pump with self-priming function according to claim 7, wherein: the centrifugal pump is characterized in that an annular mounting part (17) sleeved outside the centrifugal pump housing (3 a) is arranged at the opening end of the centrifugal pump housing (3 a), an annular mounting convex edge (18) is arranged outside the centrifugal pump cover body (3 b), a screw penetrates through the annular mounting convex edge (18) to be in threaded connection with the annular mounting part (17), and an annular groove (19) for avoiding the centrifugal pump housing (3 a) is formed in the baffle plate (14).
9. A centrifugal pump with self-priming function according to claim 7, wherein: a volute runner (20) is integrally formed in the centrifugal pump housing (3 a), and the impeller (4) is a closed impeller.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322733U true CN221322733U (en) | 2024-07-12 |
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