CN217002291U - Inlet support structure of self-priming pump - Google Patents

Abstract

The utility model belongs to the technical field of self-priming pumps, in particular to an inlet support structure of a self-priming pump, which comprises a pump shell with a liquid inlet and a liquid outlet, and a rotating shaft rotatably arranged in the pump shell, wherein a pressurizing chamber is arranged in the pump shell, an impeller sleeved on the rotating shaft is arranged in the pressurizing chamber, a liquid storage chamber is arranged between the pressurizing chamber and the liquid inlet, an inlet support assembly is arranged between the pressurizing chamber and the liquid inlet, the inlet support assembly comprises a liquid baffle plate for separating the liquid storage chamber from the liquid inlet, and the top of the liquid baffle plate is higher than the lowest point of the liquid inlet and the lowest point of a suction inlet of the impeller. The utility model effectively increases the liquid amount stored in the pump and has good self-priming effect.

Description

Inlet support structure of self-priming pump

The technical field is as follows:

the utility model belongs to the technical field of self-priming pumps, and particularly relates to an inlet support structure of a self-priming pump.

The background art comprises the following steps:

the self-priming pump does not need to be filled with liquid before the pump is started (only liquid is filled into the pump shell when the pump is started for the first time after installation, and liquid is not filled into the liquid inlet pipe), and the liquid can be sucked up by the self-priming function of the pump after short-time operation, so that the self-priming pump can be put into normal operation. Compared with the traditional centrifugal pump, the self-priming pump is simple to use and operate, not only saves the trouble of filling a large amount of liquid into the inlet pipe before starting, but also saves the bottom valve of the liquid inlet pipe, reduces the liquid inlet resistance and reduces the energy loss. Self-priming pumps in order to perform a self-priming function, a sufficient amount of liquid must be stored in the pump housing.

The liquid stored in the existing self-priming pump can flow out through the liquid inlet, so that the liquid stored in the pump is insufficient, and the self-priming effect is poor.

The utility model content is as follows:

the utility model aims to provide an inlet support structure of a self-priming pump, which effectively increases the liquid amount stored in the pump and has good self-priming effect.

The utility model is realized by the following steps:

the utility model provides a from intake bracket structure of suction pump, includes the pump case that has inlet and liquid outlet and rotates the pivot of installing in the pump case, install the pumping chamber in the pump case, be equipped with the suit in the pumping chamber and change epaxial impeller, be equipped with the stock solution room between pumping chamber and the inlet, be equipped with the intake bracket subassembly between pumping chamber and the inlet, the intake bracket subassembly includes the fender liquid board of separation stock solution room and inlet, the top of fender liquid board is higher than the minimum of inlet and the minimum of impeller sunction inlet.

In the above-mentioned inlet bracket structure of the self-priming pump, the top of the liquid baffle is higher than the highest point of the suction inlet of the impeller.

In the above inlet bracket structure of the self-priming pump, the inlet bracket assembly further comprises an annular bracket body arranged in the pump shell, the liquid storage chamber is formed in the annular bracket body, and the liquid baffle plate is arranged at a position close to the liquid inlet in the annular bracket body.

In the above-mentioned import supporting structure of a self-priming pump, the baffle top is equipped with the guiding gutter of outer end towards the pump case terminal surface, the guiding liquid storage chamber of guiding gutter inner, be equipped with the notes liquid hole that leads to the guiding gutter on the pump case terminal surface, it is equipped with the notes liquid bolt on the notes liquid hole.

In the above inlet support structure of the self-priming pump, a gap is left between the outer end of the diversion trench and the end surface of the pump casing.

In the inlet bracket structure of the self-priming pump, a gap for liquid backflow is formed between the pump shell and the pressurizing chamber and between the pump shell and the liquid storage chamber to form a backflow channel, a self-priming valve for communicating and disconnecting the backflow channel and the liquid storage chamber is arranged in the annular bracket, and a guide plate for guiding backflow liquid to an impeller suction inlet is arranged above the self-priming valve on the liquid baffle plate.

In the above inlet bracket structure of the self-priming pump, the liquid baffle between the guide plate and the self-priming valve is concave to form a buffer tank.

In the above intake port structure of the self-priming pump, an installation seat for installing the self-priming valve is provided in the annular frame, the self-priming valve includes a spring, a valve core and a nut which are arranged in the installation seat, the upper end of the spring is abutted against the installation seat, the lower end of the spring is abutted against the valve core, and the nut fixed on the installation seat is provided below the valve core.

Compared with the prior art, the utility model has the outstanding advantages that:

1. the liquid baffle plate for separating the liquid storage chamber from the liquid inlet is higher than the lowest point of the liquid inlet and the lowest point of the impeller suction inlet at the top, so that the liquid level of the liquid storage chamber is effectively increased, namely, the liquid storage amount of the liquid storage chamber is increased, and the self-suction function of the pump is obviously enhanced;

2. the top of the liquid baffle plate is higher than the highest point of the suction inlet of the impeller, so that the liquid amount stored in the liquid storage chamber is further increased, and the self-suction effect is further enhanced;

3. according to the utility model, the top of the liquid baffle plate is provided with the guide groove with the outer end facing the end surface of the pump shell, the inner end of the guide groove is guided to the liquid storage chamber, the end surface of the pump shell is provided with the liquid injection hole leading to the guide groove, so that liquid entering from the liquid injection hole is effectively guided to the liquid storage chamber, and the liquid injection is facilitated;

4. the guide plate which guides the backflow liquid to the suction inlet of the impeller is arranged above the self-priming valve on the liquid baffle plate, so that the backflow liquid is effectively guided to the suction inlet of the impeller, and the self-priming effect is enhanced; meanwhile, as the backflow liquid impacts the guide plate, liquid-gas separation is enhanced, and the self-suction effect is further enhanced;

5. the liquid baffle plate between the guide plate and the self-priming valve is concave to form the buffer groove, so that the guide plate is buffered, the impact of backflow liquid on the guide plate is reduced, the abrasion of the guide plate is reduced, and the service life of the guide plate is prolonged.

Description of the drawings:

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a first perspective view of the intake brace assembly of the present invention;

FIG. 3 is a second perspective view of the entry bracket assembly of the present invention.

Reference numerals are as follows: 1. a pump housing; 11. a liquid inlet; 12. a liquid outlet; 13. a plenum chamber; 14. a liquid storage chamber; 15. a return channel; 2. a rotating shaft; 3. an impeller; 4. an entry support assembly; 41. a liquid baffle; 42. an annular frame body; 43. a diversion trench; 44. a baffle; 45. a buffer tank; 46. a mounting seat; 5. liquid injection bolts; 6. a self-priming valve; 61. a spring; 62. a valve core; 63. and (4) a nut.

The specific implementation mode is as follows:

the utility model will now be further described by way of specific examples, with reference to figures 1 to 3:

the utility model provides a from suction pump's import support structure, includes pump case 1 that has inlet 11 and liquid outlet 12 and rotates the pivot 2 of installing in pump case 1, install pumping chamber 13 in the pump case 1, be equipped with the suit in pumping chamber 13 and change epaxial 2 impeller 3 in the pivot, be equipped with stock solution room 14 between pumping chamber 13 and the inlet 11, be equipped with import bracket component 4 between pumping chamber 13 and the inlet 11, import bracket component 4 includes separation stock solution room 14 and the liquid baffle plate 41 of inlet 11, the top of liquid baffle plate 41 is higher than the minimum of inlet 11 and the minimum of 3 sunction intakes of impeller.

As shown in FIG. 1, the liquid baffle plate 41 for separating the liquid storage chamber 14 from the liquid inlet 11 of the present invention has a top portion higher than the lowest point of the liquid inlet 11 and the lowest point of the suction inlet of the impeller 3, so as to effectively raise the liquid level of the liquid storage chamber 14, i.e., increase the liquid storage amount of the liquid storage chamber 14, and have a significant reinforcing effect on the self-priming function of the pump.

For better self-suction effect, the top of the liquid baffle 41 is higher than the highest point of the suction inlet of the impeller 3.

Structure of intake bracket assembly 4: as shown in fig. 1 to 3, the inlet bracket assembly 4 further includes an annular bracket body 42 disposed in the pump housing 1, the liquid storage chamber 14 is formed in the annular bracket body 42, and the liquid blocking plate 41 is mounted at a position close to the liquid inlet 11 in the annular bracket body 42, so that the inlet bracket assembly is simple in structure and convenient to process and assemble.

In order to be convenient for annotate liquid from annotating the liquid direction stock solution room 14 that the liquid hole entered, keep off liquid board 41 top and be equipped with the guiding gutter 43 of outer end towards 1 terminal surface of pump case, guiding liquid room 14 in guiding gutter 43 inner, be equipped with the notes liquid hole that leads to guiding gutter 43 on 1 terminal surface of pump case, be equipped with on the notes liquid hole and annotate liquid bolt 5.

Furthermore, a gap is reserved between the outer end of the guide groove 43 and the end face of the pump shell 1, so that the external force extrusion effect during assembly or use is effectively avoided, and the outer end of the guide groove 43 and the end face of the pump shell 1 are collided and damaged.

In order to guide the liquid flowing back to the suction inlet of the impeller 3 and enhance the self-priming effect, a gap for liquid to flow back is formed between the pump casing 1 and the pressurizing chamber 13 and the liquid storage chamber 14 to form a return channel 15, a self-priming valve 6 for communicating and disconnecting the return channel 15 and the liquid storage chamber 14 is arranged in the annular frame body 42, and a guide plate 44 for guiding the liquid flowing back to the suction inlet of the impeller 3 is arranged above the self-priming valve 6 on the liquid baffle plate 41. Meanwhile, the backflow liquid impacts the guide plate 44, so that liquid-gas separation is enhanced, and the self-suction effect is further enhanced.

Furthermore, the liquid baffle plate 41 between the guide plate 44 and the self-suction valve 6 is recessed inwards to form a buffer groove 45, and the backflow liquid from the self-suction valve 6 is temporarily stopped in the buffer groove 45 and then guided to the suction inlet of the impeller 3 through the guide plate 44, so that the guide plate 44 is buffered, the impact effect of the backflow liquid on the guide plate 44 is reduced, the abrasion of the guide plate 44 is reduced, and the service life of the guide plate 44 is prolonged.

Structure of self-priming valve 6: as shown in fig. 1, an installation seat 46 for installing the self-priming valve 6 is arranged in the annular frame body 42, the self-priming valve 6 includes a spring 61, a valve core 62 and a nut 63 which are arranged in the installation seat 46, the upper end of the spring 61 is abutted against the installation seat 46, the lower end of the spring is abutted against the valve core 62, and the nut 63 fixed on the installation seat 46 is arranged below the valve core 62.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: equivalent changes made according to the shape, structure and principle of the utility model are all covered by the protection scope of the utility model.

Claims (7)

1. The utility model provides an import supporting structure of self-priming pump, includes pump case (1) that has inlet (11) and liquid outlet (12) and rotates pivot (2) of installing in pump case (1), install pumping chamber (13) in pump case (1), be equipped with impeller (3) of suit on pivot (2) in pumping chamber (13), be equipped with stock solution room (14), its characterized in that between pumping chamber (13) and inlet (11): be equipped with import bracket component (4) between pumping chamber (13) and inlet (11), import bracket component (4) are including separation stock solution room (14) and liquid baffle (41) of inlet (11), the top of liquid baffle (41) is higher than the minimum of inlet (11) and the minimum of impeller (3) sunction inlet, liquid baffle (41) top is equipped with guiding gutter (43) of outer end towards pump case (1) terminal surface, guiding gutter (43) inner direction stock solution room (14), be equipped with the notes liquid hole that leads to guiding gutter (43) on pump case (1) terminal surface, be equipped with on the notes liquid hole and annotate liquid bolt (5).

2. An intake support structure for a self-priming pump according to claim 1, wherein: the top of the liquid baffle (41) is higher than the highest point of the suction inlet of the impeller (3).

3. An intake support structure for a self-priming pump according to claim 1, wherein: import bracket component (4) still including setting up annular support body (42) in pump case (1), form in annular support body (42) stock solution room (14), the position that is close to inlet (11) in annular support body (42) is installed liquid baffle (41).

4. An intake mounting structure for a self-priming pump according to claim 1, wherein: and a gap is reserved between the outer end of the guide groove (43) and the end surface of the pump shell (1).

5. An intake bracket construction for a self-priming pump according to claim 3, wherein: the pump casing (1) with have the clearance that supplies the liquid reflux between pumping chamber (13), the stock solution room (14), form backward flow passageway (15), be equipped with in annular support body (42) and communicate and break back flow passageway (15) and stock solution room (14) from inhaling valve (6), it is equipped with guide plate (44) with backflow liquid guide impeller (3) sunction inlet to lie in on the fender liquid board (41) from inhaling valve (6) top.

6. An intake mounting structure for a self-priming pump according to claim 5, wherein: and the liquid baffle plate (41) between the guide plate (44) and the self-suction valve (6) is concave inwards to form a buffer groove (45).

7. An intake bracket construction for a self-priming pump according to claim 5, wherein: be equipped with installation from mount pad (46) of inhaling valve (6) in annular support body (42), from inhaling valve (6) including setting up spring (61), case (62) and nut (63) in mount pad (46), spring (61) upper end is inconsistent with mount pad (46), the lower extreme offsets with case (62), case (62) below is equipped with nut (63) of fixing on mount pad (46).

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