CN221503542U - Water pump - Google Patents

Abstract

The utility model discloses a water pump, which comprises a pump chamber and a motor chamber, wherein the motor chamber is provided with a water inlet, one end of the pump chamber is communicated with the motor chamber, and the other end of the pump chamber is provided with a water outlet; the oil pump support seat is arranged at the communication position of the pump chamber and the motor chamber, an impeller is arranged in the pump chamber, a motor is arranged in the motor chamber, the rotating shaft end of the motor is hermetically arranged on the oil pump support seat, the rotating shaft end of the motor is rotatably provided with a rotating shaft assembly, and the oil pump support seat is provided with a mounting hole for the rotating shaft assembly to pass through and be fixedly connected with the impeller, so that the rotating shaft assembly drives the impeller to rotate; the outer periphery of the rotating shaft assembly in the mounting hole is circumferentially provided with a spiral groove so that when the spiral groove rotates along with the rotating shaft assembly, water flow between the rotating shaft assembly and the mounting hole flows towards the pump chamber. Can effectively avoid rivers to get into the motor through pivot subassembly, waterproof effect is good, avoids motor inside to rust to the life of extension motor.

Description

Water pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a water pump.

Background

The water pump has wide daily application range, can be used for conveying a large amount of sewage, rainwater, clear water and the like in the fields of flood, earthquake, fire protection, nuclear power and the like, and can also be used for drainage of constructional engineering; the submersible pump is characterized in that the motor is completely immersed in water to ensure normal heat dissipation of the motor, normal water drainage can be carried out, the motor and the impeller are fixedly connected through the rotating shaft assembly, the rotating shaft assembly drives the impeller to rotate to realize centrifugal vacuumizing and water drainage, the rotating shaft assembly of the conventional submersible pump is usually only sealed in a rotating manner by a sealing piece, so that flowing water is prevented from entering the motor, the rotary pump is required to rotate at a high speed when the rotating shaft assembly works, the rotary pump is sealed in a rotating manner by the sealing piece, a gap for relative rotation exists, flowing water enters the motor through the gap for relative rotation, rust inside the motor can be caused for a long time, and the service life of the motor is influenced.

In addition, in the prior art, the sealing elements of the rotating shaft assembly are usually made of tungsten steel alloy for rotary sealing, when the rotary shaft assembly is used, the two tungsten steel alloy sealing elements are pressed and attached by the pressure spring for rotary sealing, and are pressed and attached and rotated to generate dry grinding, rapid temperature rise can be caused in a short time, so that the motor is required to be completely soaked in water for cooling when the rotary shaft assembly is used, when the water level is lowered below the rotating shaft assembly or in a man-made misoperation state, the motor idles to enable the two tungsten steel alloy sealing elements to rotate to generate dry grinding to rapidly heat, tungsten steel alloy is cracked, the sealing elements fail, and water entering the motor is caused to be damaged.

Disclosure of utility model

The utility model aims to provide a water pump which improves the waterproof sealing effect of a rotating shaft assembly.

To achieve the above object, the solution of the present utility model is: a water pump comprises a pump chamber and a motor chamber, wherein the motor chamber is provided with a water inlet, one end of the pump chamber is communicated with the motor chamber, and the other end of the pump chamber is provided with a water outlet;

The oil pump support seat is arranged at the communication position of the pump chamber and the motor chamber, an impeller is arranged in the pump chamber, a motor is arranged in the motor chamber, the rotating shaft end of the motor is hermetically arranged on the oil pump support seat, the rotating shaft end of the motor is rotatably provided with a rotating shaft assembly, and the oil pump support seat is provided with a mounting hole for the rotating shaft assembly to pass through and be fixedly connected with the impeller, so that the rotating shaft assembly drives the impeller to rotate;

The outer periphery of the rotating shaft assembly in the mounting hole is circumferentially provided with a spiral groove so that when the spiral groove rotates along with the rotating shaft assembly, water flow between the rotating shaft assembly and the mounting hole flows towards the pump chamber.

Further, still include the oil blanket, the surface of mounting hole is formed with the oil blanket mounting groove, and the oil blanket embedding oil blanket mounting groove is encircleed and is contradicted in the periphery side of pivot subassembly.

Still further, still include the sealing plug, the inward extension of internal surface in mounting hole has the ladder mounting groove, and the ladder mounting groove inner is formed with the sealing plug mounting groove, and sealing plug embedding sealing plug mounting groove is and encircle and contradict at pivot subassembly periphery side, and the mounting is installed to ladder mounting groove outer end, and the mounting is annular structure to restrict sealing plug at sealing plug mounting groove.

Further, the rotating shaft assembly comprises a sealing mandrel, a rotating shaft, an end cover and a drainage piece;

The sealing mandrel is formed by extending the impeller towards the direction of the motor chamber, and is of a tubular structure;

the rotary shaft is formed by extending the rotary shaft end of the motor towards the direction of the pump chamber, the rotary shaft is inserted into the sealing mandrel, and the rotary shaft and the sealing mandrel are clamped and fixed through key fit, so that the rotary shaft drives the sealing mandrel to rotate;

The end cover is of a circular structure, the end cover is embedded into the sealing mandrel from one side of the impeller and is fixed at the end part of the rotating shaft through a bolt, a sealing installation groove is formed around the periphery of the end cover, a first O-shaped sealing ring is embedded into the sealing installation groove, and the first O-shaped sealing ring is abutted against the inner wall of the sealing mandrel;

The drainage piece is tubular structure, the helicla flute sets up in drainage piece periphery, and the drainage piece encircles and fixes at sealed dabber periphery, the mounting inner circumference encircle be formed with drainage piece complex water drainage tank, in the drainage piece installation water drainage tank to when rotatory along with sealed dabber, rotatory relative water drainage tank.

Furthermore, the inner circumference of the sealing plug is surrounded by an inwardly protruding lip tongue, the lip tongue is surrounded and abutted against the outer circumference side of the rotating shaft assembly, the cross section of the lip tongue is of an arc-shaped structure, the arc faces the pump chamber, the outer circumference of the sealing plug is surrounded by a second O-shaped sealing ring, and the second O-shaped sealing ring is abutted against the inner wall of the mounting hole.

Further, the sealing plug is made of carbon fiber materials.

Further, the spiral groove is a rectangular spiral groove.

Further, the motor chamber comprises a housing and a base, the base is fixed on the housing, and the housing and the base are both of a net structure.

Further, the housing is provided with a waste disposal door and an access door.

Further, two handles are symmetrically arranged on the periphery of the pump chamber.

After the scheme is adopted, the beneficial effects of the utility model are as follows:

The spiral groove is formed around the periphery of the rotating shaft assembly in the mounting hole, so that when the spiral groove rotates along with the rotating shaft assembly, the rotating direction of the spiral groove is consistent with the rotating direction of the impeller, water between the rotating shaft assembly and the mounting hole flows towards the pump chamber, and under the high-speed rotation of the rotating shaft assembly, water between the rotating shaft assembly and the mounting hole can be reversely discharged at a high speed, and meanwhile, a semi-vacuum state can be formed between the rotating shaft assembly and the mounting hole, so that flowing water and other fluid or impurities are prevented from entering, the use of the motor is effectively guaranteed, and the service life of the motor is prolonged.

Further, the oil seal mounting groove formed by embedding the oil seal into the outer surface of the mounting hole is used for sealing the rotating shaft end of the motor, so that the engine oil in the motor can be prevented from leaking, meanwhile, running water can be effectively prevented from entering the motor, reverse drainage of the spiral groove is combined, and the waterproof effect is better.

Furthermore, the oil seal and the sealing plug are adopted to realize two layers of sealing, the oil seal and the sealing plug are arranged at intervals, when the water level is lower than the rotating shaft assembly, or the motor is idle due to manual misoperation, the damage of sealing elements caused by rapid temperature rise in a short time due to dry grinding can be avoided, the reverse drainage of the spiral groove is combined, the waterproof effect is improved, and the low-water-level drainage can be realized.

Drawings

Fig. 1 is a schematic elevational view of the present utility model.

Fig. 2 is a partial enlarged view of fig. 1.

FIG. 3 is a schematic view of the oil seal, the sealing plug, and the mounting groove of the fixing member removed from FIG. 2.

Fig. 4 is a top view of the present utility model.

Fig. 5 is a schematic view of the structure of the drain member of the present utility model.

Fig. 6 is a schematic structural view of the sealing plug of the present utility model.

Description of the reference numerals:

1-pump chamber, 2-motor chamber, 3-oil pump supporting seat, 4-impeller, 5-motor, 6-spindle assembly, 7-oil seal, 8-sealing plug, 9-fixing piece, 10-handle, 11-water outlet, 21-shell, 22-base, 23-garbage cleaning door, 31-mounting hole, 32-oil seal mounting groove, 33-step mounting groove, 34-sealing plug mounting groove, 51-spindle end, 61-spiral groove, 62-sealing spindle, 63-spindle, 64-end cover, 65-drainage piece, 641-sealing mounting groove, 642-first O-shaped sealing ring, 81-lip tongue, 82-second O-shaped sealing ring, 91-drainage groove.

Detailed Description

The utility model will be described in detail with reference to the accompanying drawings and specific embodiments.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, references to orientation terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc., are used merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should they be construed as limiting the scope of the utility model in particular.

As shown in fig. 1 to 6, a water pump, with emphasis on fig. 1, comprises a pump chamber 1 and a motor chamber 2, wherein the motor chamber 2 is provided with a water inlet, one end of the pump chamber 1 is communicated with the motor chamber 2, and the other end of the pump chamber 1 is provided with a water outlet 11; an oil pump supporting seat 3 is arranged at the communication position of the pump chamber 1 and the motor chamber 2, an impeller 4 is arranged in the pump chamber 1, a motor 5 is arranged in the motor chamber 2, a rotating shaft end 51 of the motor 5 is hermetically arranged on the oil pump supporting seat 3, a rotating shaft assembly 6 is rotatably arranged at the rotating shaft end 51 of the motor 5, and a mounting hole 31 is arranged on the oil pump supporting seat 3 so that the rotating shaft assembly 6 can pass through and is fixedly connected with the impeller 4, and the rotating shaft assembly 51 drives the impeller 4 to rotate; the shaft assembly 6 is provided with a spiral groove 61 around the outer circumference of the mounting hole 31 so that the water flow between the shaft assembly 6 and the mounting hole 31 flows in the direction of the pump chamber 1 when the spiral groove 61 rotates with the shaft assembly 6. Specifically, the rotation direction of the spiral groove 61 on the rotating shaft assembly 6 is the same as the rotation direction of the impeller 4, when water flows into the mounting hole 31, the rotating shaft assembly 6 drives the spiral groove 61 to rotate relative to the mounting hole 31, the flowing water is reversely discharged out of the mounting hole 31, and meanwhile, a semi-vacuum area is formed in the mounting hole 31, so that water flow and other fluid or impurities are prevented from entering the motor 5, and normal use of the motor 5 is effectively ensured.

In this embodiment, as shown in fig. 2, the motor further includes an oil seal 7, an oil seal mounting groove 32 is formed on the outer surface of the mounting hole 31, the oil seal 7 is embedded into the oil seal mounting groove 32 and surrounds and abuts against the outer peripheral side of the rotating shaft assembly 6, the rotating shaft end 51 of the motor 5 is sealed, oil leakage at the rotating shaft end 21 of the motor 5 can be avoided, running water and fluid or impurities in the pump chamber 1 can be prevented from entering the motor 5, and the sealing effect is good. Specifically, the side of the mounting hole 31 facing the motor chamber 2 is an outer surface, and the side of the mounting hole 31 facing the impeller chamber 1 is an inner surface. The oil seal 7 is embedded into the oil seal mounting groove 32 from the outer surface of the mounting hole 31, so that the mounting is convenient, and the oil seal 7 is specifically a framework oil seal, which is in the prior art and is not described herein.

In this embodiment, the sealing device further includes a sealing plug 8, and in combination with fig. 3, the inner surface of the mounting hole 31 extends inward to form a step mounting groove 33, a sealing plug mounting groove 34 is formed at the inner end of the step mounting groove 33, as shown in fig. 2, the sealing plug 8 is embedded into the sealing plug mounting groove 34 and is abutted against the outer peripheral side of the rotating shaft assembly 6, a fixing piece 9 is mounted at the outer end of the step mounting groove 33, and the fixing piece 9 is in an annular structure, so that the sealing plug 8 is limited in the sealing plug mounting groove 34, and in particular, the sealing plug 8 and the oil seal 7 are arranged at intervals to form two layers of sealing, so that the waterproof effect is further improved.

In this embodiment, as shown in fig. 6, the inner periphery of the sealing plug 8 is surrounded by an inwardly protruding lip tongue 81, the lip tongue 81 is abutted against the outer periphery of the rotating shaft assembly 6 in a surrounding manner, the cross section of the lip tongue 81 is in an arc structure, the arc faces the pump chamber 1, specifically, the number of the lip tongues 81 is two, when flowing water enters the mounting hole 31, the flowing water impacts the arc lip tongues 81 to form a backflow reverse outflow mounting hole 31, and the two lip tongues 81 form a double-layer seal, so that the flowing water is more effectively inhibited from entering the motor 5; the second O-shaped sealing ring 82 is arranged around the periphery of the sealing plug 8, and the second O-shaped sealing ring 82 is abutted against the inner wall of the mounting hole 31, so that the sealing effect is good.

In the specific embodiment, the sealing plug 8 is made of a carbon fiber material, and the carbon fiber material has the advantages of smooth surface, good wear resistance, good thermal stability, low thermal expansion coefficient, no deformation in long-term use in a high-temperature environment and stability; when the water pump is used for pumping water, when the water level is lowered below the rotating shaft assembly 6, the rotating shaft assembly 6 rotates at a high speed, and when the heat is increased, the good thermal stability of the sealing plug 8 can ensure that the sealing plug is not deformed during normal operation, and the normal use of the motor 5 is ensured.

In this embodiment, as shown in fig. 2, the spindle assembly 6 includes a sealing mandrel 62, a rotating shaft 63, and an end cover 64; the sealing mandrel 62 is formed by extending the impeller 4 towards the motor chamber 2, and the sealing mandrel 62 has a tubular structure; the rotary shaft 63 is formed by extending the rotary shaft end 51 of the motor 5 towards the pump chamber 1, the rotary shaft 63 is inserted into the sealing mandrel 62, and the rotary shaft 63 and the sealing mandrel 62 are engaged and fixed through key fit, so that the rotary shaft 63 drives the sealing mandrel 62 to rotate; the end cover 64 is of a circular structure, the end cover 64 is embedded into the sealing mandrel 62 from one side of the impeller 4 and is fixed at the end part of the rotating shaft 63 through bolts, specifically, an installation groove for installing the end cover 64 is formed on the surface of the sealing mandrel 62, the sealing mandrel 62 is embedded into the installation groove, meanwhile, a sealing installation groove 641 is circumferentially arranged on the periphery of the end cover 64, a first O-shaped sealing ring 642 is embedded into the sealing installation groove 641, and the first O-shaped sealing ring 642 is abutted against the inner wall of the installation groove; the gap between the end cover 64 and the sealing mandrel 62 can be effectively sealed, and running water is prevented from entering the rotating shaft assembly 6. The installation is convenient, and the sealing mandrel 62, the rotating shaft 63 and the end cover 64 form a whole, so that water flow and other impurities can be effectively prevented from entering the motor 5.

Further, an O-ring is further provided between the end cover 64 and the rotary shaft 63, and the O-ring abuts against the inner side wall of the sealing mandrel 62, so that flowing water is further prevented from entering the sealing mandrel 62, and the waterproof effect is improved.

In this embodiment, the shaft assembly 6 further includes a drain member 65, the drain member 65 is in a tubular structure, the spiral groove 61 is disposed on the outer periphery of the drain member 65, the drain member 65 is fixed around the outer periphery of the sealing mandrel 62, specifically, as shown in fig. 2, the drain member 65 is fixed on the sealing mandrel 62 by screws, the inner periphery of the fixing member 9 is formed with a drain groove 91 matching with the drain member 65, and the drain member 65 is installed in the drain groove 91 so as to rotate relative to the drain groove 91 when rotating with the sealing mandrel 62, and when flowing water enters the drain groove 91 from the pump chamber 1, the drain member 65 rotates with the sealing mandrel 62 to drain the flowing water entering the drain groove 91.

Preferably, the spiral groove 61 is a rectangular spiral groove, and the amount of water discharged is large, however, in other embodiments, a taper, an arc, etc. may be used, and the present invention is not limited thereto, and those skilled in the art may design the present invention according to the specific circumstances.

In this embodiment, as shown in fig. 1, the motor chamber 2 includes a housing 21 and a base 22, the base 22 is fixed on the housing 21, and the housing 21 and the base 22 are both mesh structures, so that flowing water can enter the motor chamber 2 for efficient drainage.

In this embodiment, the shell 21 is equipped with rubbish clearance door 23 and access door (not shown in the figure), and specifically, rubbish clearance door 23 activity sets up on shell 21, when need clear up the rubbish that gets into in the motor room 1, opens rubbish clearance door 23 and clear up, closes rubbish clearance door 23 after the clearance finishes, and convenient to use conveniently clears up rubbish. In addition, be equipped with the valve piece on the motor 5, the valve piece sets up the other end relative with motor pivot end 51, be equipped with oil inlet, oil-out and oil return opening on the valve piece, oil inlet and oil-out connect high-pressure hydraulic pressure station, oil return opening connects the oil tank, valve piece detachably fixes on shell 21, the access door is located valve piece installation department, specifically, the access door passes through the bolt fastening on the shell, when the needs are overhauld, dismantle the bolt, take off the access door, can conveniently carry out valve piece maintenance and dismantlement, convenient to use.

In this embodiment, as shown in fig. 1, two handles 10 are symmetrically arranged on the outer periphery of the pump chamber 1, so that the pump chamber is convenient to carry and use.

The above embodiments are only preferred embodiments of the present utility model, and are not limited to the present utility model, and all equivalent changes made according to the design key of the present utility model fall within the protection scope of the present utility model.

Claims (10)

1. A water pump, characterized in that: comprises a pump chamber (1) and a motor chamber (2), wherein the motor chamber (2) is provided with a water inlet, one end of the pump chamber (1) is communicated with the motor chamber (2), and the other end of the pump chamber (1) is provided with a water outlet (11);

An oil pump supporting seat (3) is arranged at the communication position of the pump chamber (1) and the motor chamber (2), an impeller (4) is arranged in the pump chamber (1), a motor (5) is arranged in the motor chamber (2), a rotating shaft end (51) of the motor (5) is arranged on the oil pump supporting seat (3) in a sealing mode, a rotating shaft assembly (6) is arranged at the rotating shaft end (51) of the motor (5) in a rotating mode, and a mounting hole (31) is formed in the oil pump supporting seat (3) and used for enabling the rotating shaft assembly (6) to penetrate through the impeller (4) to be fixedly connected, so that the rotating shaft assembly (6) drives the impeller (4) to rotate;

The rotating shaft assembly (6) is provided with a spiral groove (61) around the periphery in the mounting hole (31) so that when the spiral groove (61) rotates along with the rotating shaft assembly (6), water flow between the rotating shaft assembly (6) and the mounting hole (31) flows towards the pump chamber (1).

2. A water pump according to claim 1, wherein: the rotary shaft assembly further comprises an oil seal (7), an oil seal mounting groove (32) is formed in the outer surface of the mounting hole (31), and the oil seal (7) is embedded into the oil seal mounting groove (32) and surrounds the outer periphery side of the rotary shaft assembly (6).

3. A water pump according to claim 2, wherein: the sealing device comprises a rotating shaft assembly (6), and is characterized by further comprising a sealing plug (8), wherein the inner surface of a mounting hole (31) is internally provided with a stepped mounting groove (33) in an extending mode, the inner end of the stepped mounting groove (33) is provided with a sealing plug mounting groove (34), the sealing plug (8) is embedded into the sealing plug mounting groove (34) and is abutted against the outer peripheral side of the rotating shaft assembly (6) in a surrounding mode, the outer end of the stepped mounting groove (33) is provided with a fixing piece (9), and the fixing piece (9) is of an annular structure so that the sealing plug (8) is limited in the sealing plug mounting groove (34).

4. A water pump according to claim 3, wherein: the rotating shaft assembly (6) comprises a sealing mandrel (62), a rotating shaft (63), an end cover (64) and a drain piece (65);

The sealing mandrel (62) is formed by extending the impeller (4) towards the motor chamber (2), and the sealing mandrel (62) is of a tubular structure;

the rotary shaft (63) is formed by extending a rotary shaft end (51) of the motor (5) towards the direction of the pump chamber (1), the rotary shaft (63) is inserted into the sealing mandrel (62), and the rotary shaft (63) and the sealing mandrel (62) are engaged and fixed through key fit, so that the rotary shaft (63) drives the sealing mandrel (62) to rotate;

The end cover (64) is of a circular structure, the end cover (64) is embedded into the sealing mandrel (62) from one side of the impeller (4) and is fixed at the end part of the rotating shaft (63) through bolts, a sealing installation groove (641) is formed in the periphery of the end cover (64), a first O-shaped sealing ring (642) is embedded into the sealing installation groove (641), and the first O-shaped sealing ring (642) is abutted against the inner wall of the sealing mandrel (62);

The drainage piece (65) is of a tubular structure, the spiral groove (61) is formed in the periphery of the drainage piece (65), the drainage piece (65) is fixed on the periphery of the sealing mandrel (62) in a surrounding mode, a drainage groove (91) matched with the drainage piece (65) is formed in the inner periphery of the fixing piece (9) in a surrounding mode, and the drainage piece (65) is installed in the drainage groove (91) so as to rotate relative to the drainage groove (91) when rotating along with the sealing mandrel (62).

5. A water pump according to claim 3, wherein: the inner circumference of the sealing plug (8) is surrounded by an inwardly protruding lip tongue (81), the lip tongue (81) is surrounded and abutted against the outer circumference side of the rotating shaft assembly (6), the section of the lip tongue (81) is of an arc-shaped structure, the arc faces the pump chamber (1), the outer circumference of the sealing plug (8) is surrounded by a second O-shaped sealing ring (82), and the second O-shaped sealing ring (82) is abutted against the inner wall of the mounting hole (31).

6. A water pump according to claim 5, wherein: the sealing plug (8) is made of carbon fiber materials.

7. A water pump according to claim 1, wherein: the spiral groove (61) is a rectangular spiral groove.

8. A water pump according to claim 1, wherein: the motor chamber (2) comprises a shell (21) and a base (22), wherein the base (22) is fixed on the shell (21), and the shell (21) and the base (22) are both of a net structure.

9. A water pump according to claim 8, wherein: the housing (21) is provided with a waste cleaning door (23) and an access door.

10. A water pump according to claim 1, wherein: two handles (10) are symmetrically arranged on the periphery of the pump chamber (1).