CN201730836U

CN201730836U - Water pump

Info

Publication number: CN201730836U
Application number: CN2010202675865U
Authority: CN
Inventors: 周涌
Original assignee: ZHEJIANG XINHUAN VACUUM PUMP CO Ltd
Current assignee: ZHEJIANG XINHUAN VACUUM PUMP CO Ltd
Priority date: 2010-07-22
Filing date: 2010-07-22
Publication date: 2011-02-02
Anticipated expiration: 2020-07-22

Abstract

The utility model provides a water pump, which belongs to the technical field of machinery and solves the problems that the structure adopted by the traditional water pump to realize self sucking is complicated, the operation is inconvenient and the like. The water pump comprises a motor, a link span, an impeller and a pump body, wherein the link span is located between the motor and the pump body and is fixedly connected with the motor and the pump body; the pump body is provided with a pump cavity, and the impeller is located in the pump cavity; the output shaft of the motor is fixedly connected with the impeller; the pump body is also provided with a water inlet hole and a water outlet hole which are communicated with the pump cavity; the pump body is provided with an annular runner located in the pump cavity; along the circumferential rotation direction of the impeller, the depth of the runner located at the side of the water inlet hole is from shallow to deep and the depth of the runner located at the side of the water outlet hole is from deep to shallow; and the output shaft of the motor is fixedly connected with a leakproof structure being capable of sealing the pump body. The water pump has a self sucking function, big flow and high working efficiency.

Description

A kind of water pump

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of water pump, the particularly a kind of water pump that can discharge air in the pump housing automatically.

Background technique

Water pump is widely used in daily life and industrial production, and existing water pump commonly used is a Centrifugal water pump.Centrifugal water pump generally comprises impeller, motor and the pump housing, and the output shaft of motor passes the pump housing and is connected with the impeller that is positioned at the pump housing.The working principle of Centrifugal water pump is as follows: the rotation of driven by motor impeller, the water intake of water from the pump housing sucked in the pump housing, and be displaced into the water outlet place of the pump housing.Wherein active is impeller, the blade rotation of impeller, water is driven under inwall from centrifugal action to the pump housing by blade and throws away and flow out from water outlet, water in the pump housing is after throwing away, new current enter under atmospheric pressure in the pump housing again, and water continuously enters from water intake again and discharges from water outlet like this.But this water pump needs to fill earlier water in the pump housing before startup.If do not fill water, impeller can only drive the air rotation, because the per unit volume quality of air is very little, the centrifugal force that produces is just very little, unable with in the pump housing and the air in the water outlet discharge, can not form vacuum in the pump housing, water also just can not suck, and water pump can't proper functioning.

At the problem that water pump exists, people have carried out various designs to water pump, and some has also applied for patent.For example the Chinese patent literature data discloses a kind of vacuum self-priming water pump [application number: 200520077424.2; Notice of authorization number: CN2849236Y], this water pump mainly is made up of water pump and vacuum pump, vacuum pump connects water pump by suction tude, water pump is mainly by water pump body, water pump vane, water pump spindle is formed, water pump body comprises impeller cavity, water storage cavity and water chamber, water storage cavity is communicated with on impeller cavity, water chamber is communicated with on water storage cavity, water pump vane is installed on the water pump spindle that is positioned at impeller cavity, establish the suction tude interface on water storage cavity, the suction tude of vacuum pump connects water pump by the suction tude interface, and seal base is installed in the water chamber of water pump and the joint of water storage cavity, connect diaphragm seal and diaphragm seal lining on the seal base, guide rod is installed on the seal base.

Above-mentioned vacuum self-priming water pump is that vacuum pump is integrated on the water pump, though can make water pump automatic air of discharging in the pump housing before drawing water like this, the said structure complexity is installed and the equal inconvenience of maintenance; And when the air in the needs discharge water pump, guide rod to be depressed and open valve, with shift fork the toothed timing belt dish being combined with band tooth check strap dish vacuumizes vacuum pump work again, check water level by peep hole, with shift fork the toothed timing belt dish is separated with band tooth check strap dish when water level puts in place and make the toothed timing belt dish combine and allow pump working with cushioning tooth plate, operating process is loaded down with trivial details consuming time.

Summary of the invention

The purpose of this utility model is at the above-mentioned problems in the prior art, provides a kind of simple in structure and can realize the water pump of self-priming.

The purpose of this utility model can realize by following technical proposal: a kind of water pump, comprise motor, link span, the impeller and the pump housing, described link span is connected between the motor and the pump housing and with both mutually, the described pump housing has pump chamber and described impeller is positioned at pump chamber, the output shaft of described motor is connected mutually with impeller, also have all the water inlet and the weep hole that link with pump chamber on the described pump housing, it is characterized in that, the described pump housing has the ringwise runner of the pump chamber of being positioned at, the degree of depth that the degree of depth that the described runner of direction that circumferentially rotates along impeller is positioned at the water inlet side is provided with from shallow to deep and runner is positioned at the weep hole side is provided with from deep to shallow, and being fixed with on the output shaft of described motor can be with the sealing configuration of pump housing sealing.

Sealing configuration has guaranteed the sealing of pump chamber, and the water inlet of the pump housing and weep hole all are connected with pipeline.During this pump working, be full of water in the pump housing, the output shaft impeller rotation of motor, water be subjected to action of centrifugal force to around throw away, form the water ring of a circle sealing along pump housing inwall, again because the structure of runner makes pump chamber form the long-pending pump chamber of a transfiguration, when impeller rotates in the water inlet side, it is big that spatial volume between impeller and the runner becomes gradually, pressure reduces gradually, if air in addition in this moment and the pipeline that the water inlet is connected, air sucks pump chamber from inlet hole, when impeller when the weep hole side is rotated, spatial volume between impeller and the runner diminishes gradually, and pressure increases gradually, and air is discharged from weep hole, impeller continues rotation, pump chamber with pipeline that the water inlet is connected in air just constantly discharge from weep hole, pump chamber has formed vacuum with the pipeline that is connected with the water inlet like this, water is under action of pressure at this moment, enter from the water inlet and to have realized self-priming in the pump housing, water is discharged from weep hole then.

In above-mentioned a kind of water pump, the sidepiece that described link span contacts with the pump housing is provided with second runner that links with pump chamber, and the degree of depth that the degree of depth that described second runner is positioned at the water inlet side is provided with from shallow to deep and second runner is positioned at the weep hole side is provided with from deep to shallow.Second runner the flow that has guaranteed water pump, pump working efficient height be set.

In above-mentioned a kind of water pump, described water inlet and the weep hole shape in the pump housing all is crescent shape, and described water inlet and weep hole are symmetrical arranged.Meniscate water inlet and weep hole have guaranteed the flow of water pump.

In above-mentioned a kind of water pump, described sealing configuration is a mechanical seal structure, described mechanical seal structure comprises seal ring, stuffing box gland and the gasket seal of the output shaft that is inserted in motor successively, the sidepiece of described seal ring and link span against, the sidepiece of described gasket seal and impeller against, an end of described stuffing box gland is resisted against sealing gasket, the other end of stuffing box gland is resisted against seal ring, and described stuffing box gland outer surface has groove, is provided with spring in the groove.The good seal performance of mechanical seal structure, and simple in structure, easy for installation.

In above-mentioned a kind of water pump, the bottom of the described pump housing is provided with the dewatering orifice that links with pump chamber, and described dewatering orifice is connected with the obstruction bolt.When ambient temperature is low, after this water pump quits work, open the obstruction bolt, ponding flows out from the dewatering orifice, has prevented pump housing bursting by freezing.

Compared with prior art, this water pump simple in structure, the pump chamber that is arranged so that by pump housing inner flow passage forms the long-pending pump chamber of transfiguration, can be earlier with pump chamber with pipeline that inlet hole is connected in air discharge, realized the self-priming of water pump, and the runner and second runner the flow that has guaranteed water pump, the high working efficiency of water pump be set.

Description of drawings

Fig. 1 is the structure sectional view of this water pump.

Fig. 2 is the structure front view of this water pump.

Fig. 3 is the structural representation of this water pump middle pump body.

Among the figure, 1, motor; 2, link span; 3, impeller; 4, the pump housing; 5, pump chamber; 6, water inlet; 7, weep hole; 8, runner; 9, second runner; 10, sealing configuration; 10a, seal ring; 10b, stuffing box gland; 10c, gasket seal; 10d, spring; 11, dewatering orifice; 12, stop up bolt.

Embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

As shown in Figure 1, this water pump is made up of component such as motor 1, link span 2, impeller 3 and the pump housings 4.

Specifically, as Fig. 1, Fig. 2 and shown in Figure 3, link span 2 is connected between the motor 1 and the pump housing 4 and with both mutually, be that a side of link span 2 and motor 1 are connected by bolt, the opposite side of link span 2 is connected by the bolt and the pump housing 4, the output shaft of motor 1 passes link span 2 and passes the pump housing 4 again and be connected with impeller 3 by key, and impeller 3 is positioned at the pump chamber 5 that the pump housing 4 has.Also have all the water inlet 6 and the weep hole 7 that link with pump chamber 5 on the pump housing 4, water inlet 6 and weep hole 7 all are connected with pipeline during use, and water inlet 6 and weep hole 7 are symmetrical arranged in the pump housing 4 and shape separately all is crescent shape.The pump housing 4 has the pump chamber of being positioned at 5 ringwise runners 8, and along the directions that impeller 3 circumferentially rotates, the degree of depth that the degree of depth that runner 8 is positioned at water inlet 6 sides is provided with from shallow to deep and runner 8 is positioned at weep hole 7 sides is provided with from deep to shallow.For the flow that guarantees water pump and the high working efficiency of water pump, the degree of depth that the sidepiece that contacts with the pump housing 4 at link span 2 is provided with that the degree of depth that second runner, 9, the second runners 9 that link with pump chamber 5 are positioned at water inlet 6 sides is provided with from shallow to deep and second runner 9 is positioned at weep hole 7 sides is provided with from deep to shallow.The bottom of the pump housing 4 is that the bottom position of corresponding runner 8 is provided with the dewatering orifice 11 that links with pump chamber 5, and dewatering orifice 11 is connected with stops up bolt 12.When ambient temperature is low, after this water pump quits work, to open and stop up bolt 12, ponding is 11 outflows from the dewatering orifice, have prevented the pump housing 4 bursting by freezing.

Being fixed with on the output shaft of motor 1 can be with the sealing configuration 10 of the pump housing 4 sealings, sealing configuration 10 is a mechanical seal structure, mechanical seal structure comprises seal ring 10a, stuffing box gland 10b and the gasket seal 10c of the output shaft that is inserted in motor 1 successively, the sidepiece of seal ring 10a and link span 2 against, the sidepiece of gasket seal 10c and impeller 3 against, the end of stuffing box gland 10b is resisted against sealing gasket, the other end of stuffing box gland 10b is resisted against seal ring 10a, and stuffing box gland 10b outer surface has groove, is provided with spring 10d in the groove.Spring 10d is provided with the sealability that has guaranteed between seal ring 10a, stuffing box gland 10b and the gasket seal 10c, adopt mechanical seal structure to make the good seal performance of water pump, and the installation of mechanical seal structure is comparatively convenient.

During this pump working, be full of water in the pump housing 4, output shaft impeller 3 rotations of motor 1, water be subjected to action of centrifugal force to around throw away, form the water ring of a circle sealing along the pump housing 4 inwalls, again because the structure of runner 8 makes pump chamber 5 form the long-pending pump chamber 5 of a transfiguration, impeller 3 is when 6 sides are rotated in the water inlet, spatial volume between impeller 3 and the runner 8 becomes big gradually, pressure reduces gradually, if also have air in this moment and the pipeline that water inlet 6 is connected, air is from inlet hole suction pump chamber 5, when impeller 3 when weep hole 7 sides are rotated, spatial volume between impeller 3 and the runner 8 diminishes gradually, and pressure increases gradually, and air is discharged from weep hole 7, impeller 3 continues rotation, pump chamber 5 with pipeline that water inlet 6 is connected in air just constantly discharge from weep hole 7, pump chamber 5 has formed vacuum with the pipeline that is connected with water inlet 6 like this, water is under action of pressure at this moment, enter in the pump housing 4 from water inlet 6 and to have realized self-priming, water is discharged from weep hole 7 then.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used terms such as motor 1, link span 2, impeller 3, the pump housing 4, pump chamber 5, water inlet 6, weep hole 7, runner 8, second runner 9, sealing configuration 10, seal ring 10a, stuffing box gland 10b, gasket seal 10c, spring 10d, dewatering orifice 11, obstruction bolt 12 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1. water pump, comprise motor (1), link span (2), the impeller (3) and the pump housing (4), described link span (2) is positioned between the motor (1) and the pump housing (4) and with both and is connected mutually, the described pump housing (4) has pump chamber (5) and described impeller (3) is positioned at pump chamber (5), the output shaft of described motor (1) is connected mutually with impeller (3), also have all the water inlet (6) and the weep hole (7) that link with pump chamber (5) on the described pump housing (4), it is characterized in that, the described pump housing (4) has the ringwise runner of the pump chamber of being positioned at (5) (8), the degree of depth that the degree of depth that the described runner of direction (8) that circumferentially rotates along impeller (3) is positioned at water inlet (6) side is provided with from shallow to deep and runner (8) is positioned at weep hole (7) side is provided with from deep to shallow, and being fixed with on the output shaft of described motor (1) can be with the sealing configuration (10) of the pump housing (4) sealing.

2. a kind of water pump according to claim 1, it is characterized in that, the sidepiece that described link span (2) contacts with the pump housing (4) is provided with second runner (9) that links with pump chamber (5), and the degree of depth that the degree of depth that described second runner (9) is positioned at water inlet (6) side is provided with from shallow to deep and second runner (9) is positioned at weep hole (7) side is provided with from deep to shallow.

3. a kind of water pump according to claim 2 is characterized in that, described water inlet (6) and the shape of weep hole (7) in the pump housing (4) all are crescent shape, and described water inlet (6) are symmetrical arranged with weep hole (7).

4. according to claim 1 or 2 or 3 described a kind of water pumps, it is characterized in that, described sealing configuration (10) is a mechanical seal structure, described mechanical seal structure comprises the seal ring (10a) of the output shaft that is inserted in motor (1) successively, stuffing box gland (10b) and gasket seal (10c), the sidepiece of described seal ring (10a) and link span (2) against, the sidepiece of described gasket seal (10c) and impeller (3) against, one end of described stuffing box gland (10b) is resisted against sealing gasket, the other end of stuffing box gland (10b) is resisted against seal ring (10a), and described stuffing box gland (10b) outer surface has groove, is provided with spring (10d) in the groove.

5. according to claim 1 or 2 or 3 described a kind of water pumps, it is characterized in that the bottom of the described pump housing (4) is provided with the dewatering orifice (11) that links with pump chamber (5), described dewatering orifice (11) are connected with and stop up bolt (12).