CN210889480U

CN210889480U - A vane pump for extracting emulsion

Info

Publication number: CN210889480U
Application number: CN201920867589.3U
Authority: CN
Inventors: 顾浩浩; 吕舒昌; 姚恩泽
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Zhejiang Wuzhou Tea Industry Co ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-06-30
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a vane pump for extracting emulsion, which comprises a front cover and a pump body, wherein the front cover is arranged at the front end of the pump body, a protective heat dissipation device is additionally arranged at the right end of the front cover, and the protective heat dissipation device and the front cover share a fixing nut when being fixed, thus effectively reducing the occupied space of the protective heat dissipation device and influencing the normal use work of the vane pump, and the protective heat dissipation device can rapidly dissipate heat when a pump shaft drives a vane wheel to rotate at high speed to generate high temperature, thereby avoiding the situation that the vane pump influences the normal work due to the conditions of heat failure and the like generated by high temperature, and a protective cover on the novel protective heat dissipation device can also effectively protect the front cover and a front axle seat of the vane pump, and preventing the situation that the sealing bearing and the fixing axle bearing in the front cover and the front axle seat are damaged due to the collision, thereby increasing the protection of the vane pump.

Description

A vane pump for extracting emulsion

Technical Field

The utility model belongs to the technical field of the impeller pump is relevant, concretely relates to impeller pump for extracting emulsion.

Background

The vane pump is a pump in which vanes in a rotor groove are contacted with a pump shell (a stator ring) and sucked liquid is pressed from an oil inlet side to an oil discharge side, and the historical vane pump has two types according to different types, namely a sliding vane pump in a displacement pump; second, it refers to the third pump (centrifugal pump, mixed flow pump, axial flow pump) of the power pump or other special pumps, and these pumps are not generally called vane pumps. However, as a monograph, the vane pump is almost entirely a centrifugal pump, a mixed flow pump, an axial flow pump, and the like. The pump can be classified into a vane type variable displacement pump and a vane type constant displacement pump according to whether the theoretical displacement per revolution thereof is a fixed value or a variable value.

The prior vane pump technology for pumping the emulsion has the following problems: the existing vane pump for extracting the emulsion is rotating at a high speed through a motor, the pump shaft of the vane pump generates a large amount of high temperature due to high-speed rotation, the high temperature generated by the pump shaft rotating at a high speed cannot be well dissipated, and the high temperature can enable the vane pump to generate heat failure and the like to affect the conditions of the vane pump, so that the normal working state of the vane pump can be affected, and the service life of the vane pump can be reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vane pump for extracting emulsion to the pump shaft of the vane pump who provides in solving above-mentioned background art produces a large amount of high temperatures because of high-speed rotation, and the produced high temperature of pump shaft of high-speed rotation is when can not obtaining fine heat dissipation, and the high temperature then can make the vane pump produce the problem of the condition of influence vane pump such as thermal failure.

In order to achieve the above object, the utility model provides a following technical scheme: a vane pump for extracting emulsion comprises a front cover and a pump body, wherein the front cover is arranged at the front end of the pump body and fixedly connected with the pump body through a nut, the right end of the front cover is connected with a front shaft seat extending rightwards, the front shaft seat and the front cover are fixedly connected through integral forming, a protective heat dissipation device is sleeved outside the circumference of the front shaft seat, a transverse pump shaft is connected inside the circumference of the front shaft seat, the left end of the pump shaft penetrates through the front shaft seat and the front cover and is arranged inside the circumference of the pump body, the right end of the pump shaft penetrates through the protective heat dissipation device and is arranged outside the right end of the protective heat dissipation device, a transverse fixed bayonet lock is arranged on the circumference outer wall of the rightmost end of the pump shaft, a water inlet through pipe extending downwards is arranged at the center of the circumference outer wall of the lower end of the pump body, the water inlet through pipe is communicated with the inside of the pump body, and an outer joint, the left end of the pump body is connected with a rear shaft seat extending leftwards, a water outlet through pipe extending upwards is arranged in the center of the outer circumferential wall of the upper end of the pump body, the outer circumferential wall of the uppermost end of the water outlet through pipe is sleeved with another outer connecting ring, and the water outlet through pipe is communicated with the inside of the pump body.

Preferably, the inner part of the circumference of the right end of the rear shaft seat and the inner part of the circumference of the outer wall of the left end of the pump body are connected with a transverse rear shaft hole with a right opening, a fixed bearing is arranged inside the circumference of the rear axle hole, the front cover and the front axle seat are transversely connected with a front axle hole inside, the front axle hole at the right end of the front cover is internally provided with another fixed bearing, the front axle hole on the front axle seat is internally provided with a sealing bearing, a water pumping cavity is arranged in the circumference of the pump body at the opposite position of the water inlet through pipe and the water outlet through pipe, the inner walls of the circumferences of the pump body at the left end and the right end of the water pumping cavity are respectively connected with a baffle, the pump is characterized in that a vane wheel is arranged inside the circumference of the water pumping cavity, the left end of the pump shaft penetrates through a sealing bearing and a fixed bearing inside the front shaft hole and the vane wheel inside the water pumping cavity respectively and is fixed inside the circumference of the fixed bearing inside the rear shaft seat, and the vane wheel is fixed inside the circumference of the water pumping cavity through the pump shaft.

Preferably, the protective heat dissipation device is provided with a protective cover with a leftward opening at the outermost end, a fixing hole is formed in the outer wall of the center of the right end of the protective cover, the protective cover is sleeved and fixed on the outer wall of the circumference of the pump shaft at the right end of the front shaft seat through the fixing hole, the outer walls of the upper end, the lower end and the left end of the protective cover are provided with installation pieces extending outwards, a wheel disc is arranged inside the circumference of the protective cover, an installation shaft sleeve is arranged inside the circumference of the center of the wheel disc, the wheel disc is sleeved and fixed on the outer wall of the circumference of the pump shaft through the installation shaft sleeve, inclined blades arranged in a circular ring mode are arranged on the outer wall of the circumference close to the outer end of the left side of the wheel disc.

Preferably, the circumference outer wall of visor still is provided with the louvre, the louvre is circular and the diameter is five millimeters.

Preferably, the sectional shape and the area size of the protective cover are the same as those of the front cover, the mounting pieces at the upper end and the lower end of the protective cover are completely attached to the mounting butt-joint blocks at the upper end and the lower end of the front cover, and the mounting pieces and the mounting butt-joint blocks are mounted and fixed through shared nuts.

Preferably, the included angle between the inclined blades and the outer wall of the left end of the wheel disc is 30 degrees, and the inclined blades are arranged on the outer wall of the left end of the wheel disc in a circular ring shape and are sleeved outside the circumference of the front shaft seat.

Preferably, the water inlet through pipe and the water outlet through pipe are installed in opposite directions, and the circle centers of the water inlet through pipe and the water outlet through pipe are kept on the same vertical straight line.

Compared with the prior art, the utility model provides a vane pump for extracting emulsion possesses following beneficial effect:

the utility model adds a protective heat radiator at the right end of the front cover, and the protective heat radiator and the front cover share a fixing nut when fixed, thus effectively reducing the occupation space of the protective heat radiator and influencing the normal operation of the vane pump, and the protective heat radiator can quickly radiate heat when the pump shaft drives the vane wheel to rotate at high speed to generate high temperature, thereby avoiding the situation that the vane pump generates heat failure and the like due to high temperature to influence the normal operation of the vane pump, and the protective cover on the novel protective heat radiator can also effectively protect the front cover and the front axle seat of the vane pump, preventing the damage of the sealing bearing and the fixing bearing inside the front cover and the front axle seat due to the collision, thereby increasing the protection performance of the vane pump, greatly prolonging the service life of the vane pump and ensuring the stable operation, the specific working mode and effect of the novel protective heat radiating device are as follows, firstly, the wheel disc of the protective heat radiating device is fixedly installed on the pump shaft at the right end of the front shaft seat through the installation shaft sleeve, the inclined blades arranged in a circular ring manner are additionally arranged on the circumferential outer wall at the left end of the wheel disc, the annular inclined blades are sleeved outside the circumference of the front shaft seat, a protective cover is sleeved outside the circumference of the wheel disc, the protective cover is fixed with the front cover through a nut shared by the protective cover, the wheel disc with the inclined blades is protected inside the circumference of the protective cover, therefore, when an external motor drives the pump shaft to rotate at high speed, the high-speed rotating pump shaft can drive the wheel disc to rotate at high speed through the installation shaft sleeve on the wheel disc, the included angle between the inclined blades on the outer wall at the left end of the wheel disc in high-speed rotation and the outer wall at the left end of the wheel disc is 30 degrees, and thus, the inclined blades rotating, and the strong wind that the slope blade produced can keep the intercommunication through louvre on the visor with the outside, thereby make the heat dissipation that produces high temperature protecgulum and front axle seat in the work can be quick, thereby avoid the high heat and damage the inside fixed bearing of protecgulum and the inside sealed bearing's of front axle seat condition emergence, thereby avoid this impeller pump to produce the condition such as heat failure because of high temperature and influence its normal work's condition emergence, and the visor also can effectually protect protecgulum and front axle seat not receive the collision damage, thereby can increase the whole protectiveness to whole impeller pump again, thereby make this impeller pump can be more stable safety in the use.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of an external structure of a vane pump for pumping emulsion according to the present invention;

fig. 2 is a schematic view of an internal structure of a vane pump for pumping emulsion according to the present invention;

fig. 3 is a schematic structural view of the protective heat dissipation device of the present invention;

fig. 4 is a schematic view of the protective cover structure of the present invention;

fig. 5 is a schematic view of a wheel disc structure provided by the present invention;

in the figure: 1. a front cover; 2. a pump body; 3. a water inlet through pipe; 4. an outer connecting ring; 5. a rear axle seat; 6. a water outlet through pipe; 7. installing an abutting block; 8. a front axle seat; 9. protecting the heat sink; 10. A pump shaft; 11. fixing the bayonet lock; 12. a water pumping cavity; 13. a vane wheel; 14. a rear axle hole; 15. Fixing the bearing; 16. a baffle plate; 17. sealing the bearing; 18. a front axle hole; 19. a pitch blade; 20. installing a shaft sleeve; 21. a fixing hole; 22. a wheel disc; 23. a protective cover; 24. mounting a sheet; 25. and (4) heat dissipation holes.

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.

Referring to fig. 1-5, the present invention provides a technical solution: a vane pump for extracting emulsion comprises a front cover 1 and a pump body 2, wherein the front cover 1 is arranged at the front end of the pump body 2, the front cover 1 and the pump body 2 are fixedly connected through a nut, the right end of the front cover 1 is connected with a front shaft seat 8 extending rightwards, the front shaft seat 8 and the front cover 1 are fixedly connected through integral forming, a protective heat dissipation device 9 is sleeved outside the circumference of the front shaft seat 8, a transverse pump shaft 10 is connected inside the circumference of the front shaft seat 8, the left end of the pump shaft 10 penetrates through the front shaft seat 8 and the front cover 1 and is arranged inside the circumference of the pump body 2, the right end of the pump shaft 10 penetrates through the protective heat dissipation device 9 and is arranged outside the right end of the protective heat dissipation device 9, a transverse fixed clamping pin 11 is arranged on the circumferential outer wall at the rightmost end of the pump shaft 10, a water inlet through pipe 3 extending downwards is arranged at the center of the circumferential outer, outer adapter ring 4 has been cup jointed on the lower extreme circumference outer wall of the siphunculus 3 that intakes, and the left end of the pump body 2 is connected with the rear axle seat 5 that stretches out left, and the upper end circumference outer wall center department of the pump body 2 is provided with the water siphunculus 6 that upwards stretches out, has cup jointed another outer adapter ring 4 on the topmost circumference outer wall of water siphunculus 6, and water siphunculus 6 keeps the feed through state with the inside of the pump body 2.

Further, a rear shaft hole 14 which is horizontal and has a right opening is connected inside the circumference of the right end of the rear shaft seat 5 and the circumference outer wall of the left end of the pump body 2, a fixed bearing 15 is arranged inside the circumference of the rear shaft hole 14, a front shaft hole 18 is connected inside the front cover 1 and the front shaft seat 8, another fixed bearing 15 is arranged inside the circumference of the front shaft hole 18 at the right end of the front cover 1, a sealing bearing 17 is arranged inside the circumference of the front shaft hole 18 on the front shaft seat 8, a water pumping cavity 12 is arranged inside the circumference of the pump body 2 at the opposite position of the water inlet through pipe 3 and the water outlet through pipe 6, baffle plates 16 are respectively connected on the circumference inner walls of the pump body 2 at the left end and the right end of the water pumping cavity 12, a water pumping cavity 13 is arranged inside the circumference of the water pumping cavity 12, the left end of the shaft hole 10 of the pump shaft respectively passes through the, the vane wheel 13 is fixed inside the circumference of the pumping chamber 12 by the pump shaft 10.

Furthermore, the outmost end of the protective heat dissipation device 9 is provided with a protection cover 23 with a left opening, the outer wall of the right end center of the protection cover 23 is internally provided with a fixing hole 21, the protection cover 23 is sleeved and fixed on the outer wall of the circumference of the pump shaft 10 at the right end of the front shaft seat 8 through the fixing hole 21, the outer walls of the upper and lower ends of the leftmost side of the protection cover 23 are both provided with mounting pieces 24 extending outwards, the circumference of the protection cover 23 is internally provided with a wheel disc 22, the circumference of the center of the wheel disc 22 is internally provided with a mounting shaft sleeve 20, the wheel disc 22 is sleeved and fixed on the outer wall of the circumference of the pump shaft 10 through the mounting shaft sleeve 20, the outer wall of the circumference close to the outer end at the left side of the wheel disc 22 is provided with inclined blades 19 arranged in a circular ring, the inclined blades 19 arranged on the outer wall at the left end of the wheel disc 22, the inclined blades 19 arranged in a circular ring are additionally arranged on the outer wall of the circumference of the left end of the wheel disc 22, the inclined blades 19 in a circular ring shape are sleeved outside the circumference of the front shaft seat 8, a protective cover 23 is sleeved outside the circumference of the wheel disc 22 and is protected to be fixed with the front cover 1 by a nut, the wheel disc 22 with the inclined blades 19 is protected inside the circumference by the protective cover 23, so that when an external motor drives the pump shaft 10 to rotate at a high speed, the pump shaft 10 rotating at a high speed drives the wheel disc 22 to rotate at a high speed through the mounting shaft sleeve 20 on the wheel disc 22, the wheel disc 22 rotating at a high speed is enabled to generate strong wind due to the action of the inclined angle because the inclined blades 19 on the outer wall of the left end of the wheel disc 22 are in an included angle of 30 degrees, and the strong wind generated by the inclined blades 19 is communicated with the outside through the heat dissipation holes 25 on the protective cover 23, therefore, the front cover 1 and the front axle seat 8 which generate high temperature in work can quickly dissipate heat.

Further, the circumference outer wall of the protection cover 23 is provided with heat dissipation holes 25, the heat dissipation holes 25 are circular and have a diameter of five millimeters, and the heat dissipation holes 25 can ensure that air inside and outside the protection cover 23 can be rapidly exchanged, so that the protection cover 23 can protect the wheel disc 22 and the inclined blades 19 inside the protection cover while the heat dissipation effect of the whole protection heat dissipation device 9 is not affected.

Further, the sectional shape and the area size of visor 23 are the same with the sectional shape and the area size of protecgulum 1, the installation piece 24 at both ends about visor 23 is in the same place with the complete laminating of the installation butt joint piece 7 at both ends about protecgulum 1, installation piece 24 is fixed with the installation butt joint piece 7 sharing nut installation, the installation piece 24 on visor 23 is fixed and the installation on the protecgulum 1 is fixed the block 7 sharing fixing nut and can effectually reduce this protection heat abstractor 9's occupation space, thereby make this protection heat abstractor 9 can not influence the normal work of whole vane pump.

Further, the contained angle between slope blade 19 and the rim plate 22 left end outer wall is 30 degrees angles, and slope blade 19 is arranged and cup joints the circumference outside at front axle bed 8 with ring shape on rim plate 22 left end outer wall, forms 30 degrees contained angles between slope blade 19 and the rim plate 22 and can make slope blade 19 can produce strong wind when high-speed rotation to accelerate the radiating effect to this impeller pump, thereby guarantee that this impeller pump can be stable carry out work.

Further, the siphunculus 3 of intaking keeps the subtend installation with play water siphunculus 6, and the centre of a circle of intaking siphunculus 3 and play water siphunculus 6 keeps on same vertical straight line, can make through intaking siphunculus 3 and the inside emulsion of play water siphunculus 6 more stable and quick like this to also can make intake siphunculus 3 and play water siphunculus 6 dock more firmly and stable with outside pipeline, thereby increase the job stabilization nature of whole blade pump.

The utility model discloses a theory of operation and use flow: after the utility model is installed, firstly, the assembled vane pump and the external motor are fixedly connected together, only the vane pump is connected with the motor, the vane pump can work, and the vane pump and the external motor are fixedly connected through the nut, when the vane pump is connected with the external motor, the crankshaft of the motor can drive the pump shaft 10 to rotate through the shaft coupling, at the moment, the pump shaft 10 can drive the vane wheel 13 inside the water pumping cavity 12 to rotate at high speed, and the vane wheel 13 rotating at high speed can be pumped into the water pumping cavity 12 through the water inlet through pipe 3 and then discharged through the water outlet through pipe 6, and the right end of the front cover 1 is added with a protective heat dissipation device 9, and the specific working mode and effect of the novel protective heat dissipation device 9 are as follows, firstly, the wheel disc 22 of the protective heat dissipation device 9 is fixedly installed on the pump shaft 10 at the right end of the front 8 shaft seats through the installation shaft sleeve 20, the inclined blades 19 arranged in a circular ring are additionally arranged on the outer wall of the circumference of the left end of the wheel disc 22, the inclined blades 19 in a circular ring shape are sleeved outside the circumference of the front shaft seat 8, a protective cover 23 is sleeved outside the circumference of the wheel disc 22 and is protected to be fixed with the front cover 1 by a nut, the wheel disc 22 with the inclined blades 19 is protected inside the circumference by the protective cover 23, so that when an external motor drives the pump shaft 10 to rotate at a high speed, the pump shaft 10 rotating at a high speed drives the wheel disc 22 to rotate at a high speed through the mounting shaft sleeve 20 on the wheel disc 22, the wheel disc 22 rotating at a high speed is enabled to generate strong wind due to the action of the inclined angle because the inclined blades 19 on the outer wall of the left end of the wheel disc 22 are in an included angle of 30 degrees, and the strong wind generated by the inclined blades 19 is communicated with the outside through the heat dissipation holes 25 on the protective cover 23, therefore, the front cover 1 and the front shaft seat 8 which generate high temperature in the work process can quickly dissipate heat, and the situation that the fixed bearing 15 inside the front cover 1 and the sealing bearing 17 inside the front shaft seat 8 are damaged due to high heat is avoided.

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

1. A vane pump for extracting emulsion, comprising a front cover (1) and a pump body (2), characterized in that: the pump is characterized in that the front cover (1) is arranged at the front end of the pump body (2), the front cover (1) is fixedly connected with the pump body (2) through a nut, the right end of the front cover (1) is connected with a front shaft seat (8) extending rightwards, the front shaft seat (8) is fixedly connected with the front cover (1) through integral forming, a protective heat dissipation device (9) is sleeved outside the circumference of the front shaft seat (8), a transverse pump shaft (10) is connected inside the circumference of the front shaft seat (8), the left end of the pump shaft (10) penetrates through the front shaft seat (8) and the front cover (1) and is arranged inside the circumference of the pump body (2), the right end of the pump shaft (10) penetrates through the protective heat dissipation device (9) and is arranged outside the right end of the protective heat dissipation device (9), a transverse fixed bayonet lock (11) is arranged on the outer wall of the circumference of the rightmost end of the pump shaft (10), a through pipe (3) extending downwards is arranged at the center, the utility model discloses a pump, including the water intaking siphunculus (3), the intercommunication state is kept with pump body (2) inside to intaking siphunculus (3), outer adapter ring (4) have been cup jointed on the lower extreme circumference outer wall of intaking siphunculus (3), the left end of pump body (2) is connected with rear axle bed (5) that stretch out left, the upper end circumference outer wall center department of pump body (2) is provided with the play water siphunculus (6) that upwards stretches out, cup joint another outer adapter ring (4) on the top circumference outer wall of play water siphunculus (6), it keeps the intercommunication state with the inside of pump body (2) to go out water siphunculus.

2. A vane pump for drawing emulsion as defined in claim 1 wherein: the pump is characterized in that a rear shaft hole (14) which is transversely opened to the right is connected to the inner portion of the circumference of the right end of the rear shaft seat (5) and the outer wall of the circumference of the left end of the pump body (2), a fixed bearing (15) is arranged in the circumference of the rear shaft hole (14), a front shaft hole (18) is connected to the front cover (1) and the front shaft seat (8) in the transverse inner portion, another fixed bearing (15) is arranged in the circumference of the front shaft hole (18) at the right end of the front cover (1), a sealing bearing (17) is arranged in the circumference of the front shaft hole (18) on the front shaft seat (8), a water pumping cavity (12) is arranged in the circumference of the pump body (2) at the opposite position of the water inlet through pipe (3) and the water outlet through pipe (6), blocking pieces (16) are respectively connected to the circumferential inner walls of the pump body (2) at the left, the left end of the pump shaft (10) penetrates through a sealing bearing (17) and a fixed bearing (15) in a front shaft hole (18) and a vane wheel (13) in a pumping cavity (12) respectively and is fixed inside the circumference of the fixed bearing (15) in a rear shaft seat (5), and the vane wheel (13) is fixed inside the circumference of the pumping cavity (12) through the pump shaft (10).

3. A vane pump for drawing emulsion as defined in claim 1 wherein: the protective heat dissipation device is characterized in that a protective cover (23) with an opening facing left is arranged at the outermost end of the protective heat dissipation device (9), a fixing hole (21) is formed in the outer wall of the center of the right end of the protective cover (23), the protective cover (23) is sleeved and fixed on the outer wall of the circumference of a pump shaft (10) at the right end of a front shaft seat (8) through the fixing hole (21), installation pieces (24) extending outwards are arranged on the outer walls of the upper end and the lower end of the leftmost side of the protective cover (23), a wheel disc (22) is arranged in the circumference of the protective cover (23), an installation shaft sleeve (20) is arranged in the circumference of the center of the wheel disc (22), the wheel disc (22) is sleeved and fixed on the outer wall of the circumference of the pump shaft (10) through the installation shaft sleeve (20), inclined blades (19) arranged in a circular ring manner are arranged on the outer wall of the left side of the wheel disc (22), and inclined blades ( Outside the outer wall.

4. A vane pump for drawing emulsion as defined in claim 3 wherein: the protective cover is characterized in that heat dissipation holes (25) are further formed in the circumferential outer wall of the protective cover (23), and the heat dissipation holes (25) are circular and five millimeters in diameter.

5. A vane pump for drawing emulsion as defined in claim 3 wherein: the cross sectional shape and the area size of the cross sectional shape of visor (23) and protecgulum (1) are the same, installation piece (24) at both ends about visor (23) and the complete laminating of installation butt joint piece (7) at both ends about protecgulum (1) are in the same place, installation piece (24) and installation butt joint piece (7) share the nut installation fixed.

6. A vane pump for drawing emulsion as defined in claim 3 wherein: the included angle between the inclined blades (19) and the outer wall of the left end of the wheel disc (22) is 30 degrees, and the inclined blades (19) are arranged on the outer wall of the left end of the wheel disc (22) in a circular ring shape and are sleeved outside the circumference of the front shaft seat (8).

7. A vane pump for drawing emulsion as defined in claim 1 wherein: the water inlet through pipe (3) and the water outlet through pipe (6) are installed in an opposite mode, and the circle centers of the water inlet through pipe (3) and the water outlet through pipe (6) are kept on the same vertical straight line.