CN115306703A - Exhaust valve for water circulation system of electronic water pump and electronic water pump - Google Patents

Abstract

The invention provides an exhaust valve for an electronic water pump water circulation system and an electronic water pump, which comprise a valve body, a valve cover, a base, a valve core mechanism and a floating mechanism, wherein the valve cover is arranged on the base; wherein, the top of valve body is located to the valve gap, the first discharge hole that the intercommunication overflowed the passageway is seted up to the valve gap, the through hole that supplies case mechanism along vertical through is seted up at the middle part of valve gap, the base includes the bottom flange section that connects gradually from bottom to top, place the middle part that overflows in the passageway in and the section is placed at the top, case mechanism includes the case main part and the protruding case guide bar of locating case main part top that makes progress, floating mechanism locates the body guide bar at floating body top including the floating body that is used for providing buoyancy in case mechanism and the protruding body guide bar that makes progress, the body guide bar is movably set up in the case guide bar. The invention can rapidly and actively discharge the air in the water circulation system of the electronic water pump, prevent the electronic water pump from idling and effectively avoid the liquid leakage of the water circulation system.

Description

Exhaust valve for water circulation system of electronic water pump and electronic water pump

Technical Field

The invention relates to the technical field of electronic water pumps, in particular to an exhaust valve for a water circulation system of an electronic water pump and the electronic water pump.

Background

With the continuous development of the automobile electronic intelligent level in recent years, particularly the development of new energy automobiles, the electronic water pump is widely applied to the new energy automobiles, a water circulation system of the electronic water pump can cool automobile batteries, motors and the like, the electronic water pump is a key and indispensable system for ensuring the safety performance of the automobiles, the water circulation system relates to the exhaust requirement, and the performance of an exhaust valve is very important for the reliability and the service life of the electronic water pump. The traditional exhaust valve has the defects of low exhaust speed, incapability of exhausting in time, poor sealing performance, poor reliability and the like, and how to ensure effective exhaust, effective sealing and high reliability of the exhaust valve is always the subject of research of engineering technicians in the field.

At present, the Chinese patent No. CN 212202513U discloses an electronic water pump capable of automatically detecting gas and exhausting, and the invention can realize automatic gas detection and automatic exhausting without manual intervention. Chinese patent No. CN 111734648A discloses "a method, an apparatus, an electronic device, and a storage medium for controlling exhaust of a water pump", which can determine whether a gas-bound phenomenon occurs in the water pump by comparing a rotational speed of a motor with a target rotational speed threshold. If the electronic water pump generates air-bound phenomenon, the exhaust control device automatically triggers the water pump to execute exhaust operation. These methods are complicated, costly and all are passive exhaust methods.

In view of the above, it is desirable to provide an exhaust valve for a water circulation system of an electronic water pump and an electronic water pump to solve or at least alleviate the above-mentioned drawbacks.

Disclosure of Invention

The invention mainly aims to provide an exhaust valve for an electronic water pump water circulation system and an electronic water pump, and aims to solve the problems that the electronic water pump in the prior art adopts passive exhaust for exhaust and has low exhaust speed.

In order to achieve the aim, the invention provides an exhaust valve for a water circulation system of an electronic water pump, which comprises a valve body, a valve cover, a base, a valve core mechanism and a floating mechanism, wherein the valve cover is arranged on the valve body; wherein the content of the first and second substances,

the valve body comprises a valve main body, a top connecting flange and a bottom connecting flange which are oppositely arranged at two ends of the valve main body, and the valve main body is provided with a vertically through overflowing channel; the valve cover is arranged at the top of the valve body and fixedly connected with the top surface of the top connecting flange in a sealing manner, the valve cover is provided with a first drainage hole communicated with the overflowing channel, and the middle part of the valve cover is provided with a through hole for the valve core mechanism to vertically penetrate through;

the base, the valve main body and the valve cover jointly surround to form an overflowing cavity for fluid media to flow, and the first exhaust hole is communicated with the overflowing cavity; the base comprises a bottom flange section, a middle overflowing section and a top placing section, wherein the bottom flange section, the middle overflowing section and the top placing section are arranged in the overflowing channel and are sequentially connected from bottom to top; the bottom flange section is fixedly connected with the bottom connecting flange in a sealing manner;

the middle overflowing section is columnar, the bottom of the middle overflowing section is upwards sunken with an overflowing groove, and the side wall of the overflowing groove is provided with a plurality of overflowing holes communicated with the overflowing cavity; the top placing section comprises an enclosure arranged around the top of the middle overflowing section, and the enclosure and the top of the middle overflowing section enclose to form a seating groove with an opening at the top and used for seating the valve core mechanism;

the valve core mechanism is arranged in the overflowing channel and comprises a valve core main body and a valve core guide rod which is upwards and convexly arranged at the top of the valve core main body, the valve core main body is arranged right above the seating groove, a liquid inlet distance is arranged between the valve core main body and the groove wall of the seating groove at intervals, and the valve core guide rod is hollow and movably arranged along the through hole; the bottom of the valve core main body is upwards provided with a second drainage hole communicated with the interior of the valve core guide rod;

the floating mechanism comprises a floating body for providing buoyancy for the valve core mechanism and a floating body guide rod protruding upwards from the top of the floating body, and the floating body guide rod is movably arranged in the valve core guide rod.

Preferably, the base further comprises a wind deflector assembly arranged in the overflow groove, and a first liquid inlet hole communicated with the seating groove is formed in the bottom of the overflow groove; wherein, wind deflector subassembly encircles including being discoid deep bead and polylith the perpendicular baffle that the deep bead interval set up, the deep bead parallel spacing set up in the below of the tank bottom of overflow groove, erect the baffle and connect the tank bottom of overflow groove with between the deep bead, in order to form a plurality of with the corresponding second feed liquor hole in first feed liquor hole.

Preferably, the overflow device further comprises a protection assembly for preventing foreign matters from entering the overflow chamber, wherein the protection assembly comprises a mesh pipe vertically arranged and a cover plate for plugging the top of the mesh pipe; wherein, the mesh pipe is fixed to be located the top of valve gap, the apron with mesh pipe fixed connection, the mesh pipe is including the top export and the bottom import of relative setting, first drainage hole the through hole all with the mesh pipe the bottom import intercommunication.

Preferably, the protruding connection otic placode that is equipped with in top of apron, discharge valve still includes gesture fixed bolster, the fixed bolster include with connection otic placode fixed connection's intermediate frame, fixed locating the roof at intermediate frame top, set up the first connecting hole that a plurality of confession bolts run through on the roof.

Preferably, the valve cover is in a circular plate shape, the number of the first drain holes is four, and the four first drain holes are uniformly distributed around the through hole.

Preferably, the surrounding baffle is an annular surrounding baffle, the valve core main body is cylindrical, the valve core main body and the annular surrounding baffle are arranged coaxially, and an interval liquid inlet distance is reserved between the annular surrounding baffle and the valve core main body.

Preferably, a guide pipe for guiding the valve core guide rod to move vertically is convexly arranged at the top of the valve cover, the guide pipe and the through hole are coaxially arranged, and the inner diameter of the guide pipe is larger than the outer diameter of the valve core guide rod.

Preferably, a first sealing ring is arranged between the valve cover and the top connecting flange in a cushioning mode, the top connecting flange is provided with a plurality of second connecting holes for being connected through bolts, the second connecting holes are evenly distributed around the through hole, the valve cover is provided with third connecting holes which are distributed in one-to-one correspondence to the second connecting holes, the valve cover is connected with the top connecting flange in a sealing mode through the first sealing ring, and the valve cover penetrates through the second connecting holes and the third connecting holes through bolts to be fixedly connected with the top connecting flange.

Preferably, a containing groove matched with the floating body is recessed upwards at the bottom of the valve core main body, the second drainage hole is formed in the middle of the bottom of the containing groove, an annular groove surrounding the second drainage hole is further formed in the bottom of the containing groove, a second sealing ring is installed in the annular groove, and the linear diameter of the second sealing ring is larger than the depth of the annular groove.

The invention also provides an electronic water pump, which comprises a water pump body, wherein the water pump body comprises a water inlet pipe and the exhaust valve for the water circulation system of the electronic water pump; the water inlet pipe is fixedly connected with the bottom surface of the connecting flange section of the base in a sealing mode.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides an exhaust valve for an electronic water pump water circulation system and an electronic water pump, which comprise a valve body, a valve cover, a base, a valve core mechanism and a floating mechanism, wherein the valve cover is arranged on the base; wherein, the top of valve body is located to the valve gap, the first discharge hole that the intercommunication overflowed the passageway is seted up to the valve gap, the through hole that supplies case mechanism along vertical through is seted up at the middle part of valve gap, the base includes the bottom flange section that connects gradually from bottom to top, place the middle part that overflows in the passageway in and the section is placed at the top, case mechanism includes the case main part and the protruding case guide bar of locating case main part top that makes progress, floating mechanism locates the body guide bar at floating body top including the floating body that is used for providing buoyancy in case mechanism and the protruding body guide bar that makes progress, the body guide bar is movably set up in the case guide bar. The invention can rapidly and actively discharge the air in the water circulation system of the electronic water pump, prevent the electronic water pump from idling and effectively avoid the liquid leakage of the water circulation system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of an embodiment of the present invention from another perspective;

FIG. 3 is a schematic view of a large volume purge condition of a purge valve according to an embodiment of the present invention;

FIG. 4 is a schematic view of a vent valve in an embodiment of the present invention in a sealed state;

FIG. 5 is a schematic view of a purge valve in a micro-bleed state according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a valve cover in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a base in one embodiment of the present invention;

FIG. 8 is a schematic illustration of the configuration of the poppet mechanism and float structure in one embodiment of the present invention;

fig. 9 isbase:Sub>A schematic sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 8.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

The reference numbers indicate:

10. a valve body; 110. a valve body; 111. the top is connected with a flange; 112. a second connection hole; 113. a bottom connecting flange; 114. an overflow chamber; 20. a valve cover; 210. a first exhaust orifice; 220. a guide tube; 230. a first seal ring; 240. a third connecting hole; 30. a base; 310. a bottom flange section; 320. a middle overflow section; 321. a flow through groove; 322. an overflowing hole; 323. a first liquid inlet hole; 330. a top placement section; 331. fencing; 332. a seating groove; 40. a valve core mechanism; 410. a valve core main body; 411. a containing groove; 420. a second seal ring; 430. a spool guide rod; 440. a second drainage aperture; 50. a floating mechanism; 510. a floating body; 520. a float guide bar; 60. a wind shield assembly; 610. a wind deflector; 620. erecting a partition plate; 630. a second liquid inlet hole; 70. a guard assembly; 710. a mesh tube; 720. a cover plate; 730. connecting the ear plates; 80. a posture fixing bracket; 810. a middle frame; 820. a top plate; 821. a first connection hole.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it is necessary to be based on the realization of the technical solutions by those skilled in the art, and when the combination of the technical solution 1 is contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 9, in an embodiment of the present invention, an exhaust valve for a water circulation system of an electronic water pump includes a valve body 10, a valve cover 20, a base 30, a valve core mechanism 40, and a floating mechanism 50; wherein the content of the first and second substances,

the valve body 10 comprises a valve body 110, a top connecting flange 111 and a bottom connecting flange 113 which are oppositely arranged at two ends of the valve body 110, and the valve body 110 is provided with a flow passage (not shown) which penetrates along the vertical direction; the valve cover 20 is arranged at the top of the valve body 10, the valve cover 20 is fixedly connected with the top surface of the top connecting flange 111 in a sealing manner, the valve cover 20 is provided with a first exhaust hole 210 communicated with the overflowing channel, and the middle part of the valve cover 20 is provided with a through hole (not marked) for the valve core mechanism 40 to penetrate through vertically. It should be noted that the upper end of the valve body 110 of the present application is provided with a top connecting flange 111, and the lower end is provided with a bottom connecting flange 113, wherein the top connecting flange 111 is used for connecting the valve cover 20, and the bottom connecting flange 113 is used for connecting the base 30; the top surface of the top connecting flange 111 and the valve cap 20 may be fixedly connected by a gasket disposed therebetween or a sealing ring disposed therebetween, and then the two may be fixedly connected by bolting, welding or integral molding, and the specific implementation manner may be set by those skilled in the art according to actual needs.

In a preferred embodiment, a first sealing ring 230 is disposed between the bonnet 20 and the top connecting flange 111, the top connecting flange 111 defines a plurality of second connecting holes 112 for connecting bolts, the plurality of second connecting holes 112 are uniformly distributed around the through holes, the bonnet 20 defines third connecting holes 240 arranged in a one-to-one correspondence to the second connecting holes 112, the bonnet 20 is hermetically connected to the top connecting flange 111 through the first sealing ring 230, and the bonnet 20 is fixedly connected to the top connecting flange 111 through the second connecting holes 112 and the third connecting holes 240 by bolts. It should be noted that the first sealing ring 230 is provided to prevent the fluid medium from flowing out from the connection between the valve cover 20 and the top connecting flange 111, and to ensure that the gas is discharged through the first discharge hole 210 when a large amount of gas is discharged, so it is easily understood that the first discharge hole 210 is opened at the inner side of the first sealing ring 230.

As an optional embodiment, the valve cover 20 is in a circular plate shape, the number of the first drain holes 210 is four, and the four first drain holes 210 are uniformly distributed around the through hole. The through hole is used for the valve element mechanism 40 and the float mechanism 50 to move up and down in the axial direction of the through hole.

The base 30, the valve body 110 and the valve cover 20 together enclose a flow passing chamber 114 for flowing fluid medium, and the first exhaust hole 210 is communicated with the flow passing chamber 114; the base 30 comprises a bottom flange section 310, a middle overflowing section 320 and a top placing section 330, which are sequentially connected from bottom to top, and the middle overflowing section 320 and the top placing section are arranged in the overflowing channel; wherein, the bottom flange section 310 is fixedly connected with the bottom connecting flange 113 in a sealing manner. The middle overflowing section 320 is columnar, an overflowing groove 321 is recessed upwards at the bottom of the middle overflowing section 320, and a plurality of overflowing holes 322 communicated with the overflowing chamber 114 are formed in the side wall of the overflowing groove 321; the top placing section 330 includes a surrounding barrier 331 surrounding the top of the middle flow-passing section 320, and the surrounding barrier 331 and the top of the middle flow-passing section 320 surround a seating groove 332 forming a top opening and seating the valve core mechanism 40.

It is noted by those skilled in the art that the bottom flange section 310 is used for connecting with the bottom connecting flange 113 of the valve body 10, and the bottom flange section 310 can also be used for connecting with a water inlet pipe of a water circulation system of an electronic water pump; the middle overflow section 320 is used for communicating with a water inlet pipe of the electronic water pump, and gas or liquid from the water inlet pipe enters the overflow chamber 114 through the flow hole 322. The top placement section 330 is used to provide a seating position for the valve core mechanism 40 and the float mechanism 50, for example, to allow the valve core mechanism 40 and the float mechanism 50 to be seated in the seating groove 332 when a large amount of exhaust is performed.

The valve core mechanism 40 is arranged in the overflowing channel, the valve core mechanism 40 comprises a valve core main body 410 and a valve core guide rod 430 which protrudes upwards and is arranged at the top of the valve core main body 410, the valve core main body 410 is arranged right above the seating groove 332, a spaced liquid inlet distance is reserved between the valve core main body and the groove wall of the seating groove 332, and the valve core guide rod 430 is hollow and movably arranged along the through hole; the bottom of the valve body 410 is opened upward with a second drain hole 440 communicating with the inside of the valve guide rod 430. It should be noted that the valve core mechanism 40 is used for controlling the open/close state of the whole exhaust valve, the valve core mechanism 40 of the present application includes an upper portion and a lower portion, which are respectively the valve core main body 410 located at the lower portion and the valve core guide rod 430 located at the upper portion of the valve core main body 410, and it should be noted that the valve core main body 410 and the seating groove 332 are correspondingly disposed, the seating groove 332 can accommodate the valve core main body 410, and a gap liquid inlet distance is provided between the valve core main body 410 and a groove wall of the seating groove 332, so that after a large amount of exhaust, liquid can enter the groove bottom of the seating groove 332 through a gap having the gap liquid inlet distance, thereby providing sufficient buoyancy for the floating mechanism 50.

The floating mechanism 50 includes a floating body 510 for providing buoyancy to the valve core mechanism 40 and a float guide rod 520 upwardly protruded from the top of the floating body 510, the float guide rod 520 being movably disposed within the valve core guide rod 430. The floating body 510 may be made of plastic, and the inside of the floating body 510 is hollow, so that sufficient buoyancy may be provided.

The application provides a technical scheme, can be rapid in time get rid of the air in the electronic water pump water circulating system, prevent electronic water pump idle running, effectively avoided water circulating system liquid to reveal to can also carry out the trace and exhaust, in time get rid of a small amount of gas in the system.

The working process is as follows: when the exhaust valve is in a large amount of exhaust state, gas from the water inlet pipe of the electronic water pump flows from the bottom of the valve body 10 into the overflow chamber 114 through the overflow hole 322 on the middle overflow section 320 of the base 30, and due to the limited buoyancy provided by the gas to the floating mechanism 50, the floating mechanism 50 cannot push the valve core mechanism 40 to move vertically, at this time, the valve core mechanism 40 and the floating mechanism 50 are located in the seating groove 332, at this time, the first exhaust hole 210 on the valve cover 20 is in an open state, and a large amount of gas is exhausted from the first exhaust hole 210 to the atmosphere outside the electronic water pump, so that a large amount of gas inside the electronic water pump is actively exhausted.

When the exhaust valve is in a sealed state, when the exhaust valve is in the sealed state, gas is exhausted, at the moment, liquid entering from a water inlet pipe of the electronic water pump enters and fills the overflowing cavity 114 through the overflowing hole 322 of the middle overflowing section, at the moment, the liquid flows into the seating groove 332, at the moment, the floating mechanism 50 generates enough buoyancy under the action of the liquid, at the moment, the buoyancy acts on the valve core mechanism 40, at the moment, the valve core mechanism 40 vertically moves a path, namely the valve core guide rod 430 upwards moves along the through hole until the top of the valve core main body 410 is abutted to the bottom of the valve cover 20, at the moment, the first exhausting hole 210 and the through hole in the valve cover 20 are plugged to be in a closed state, the liquid is ensured not to be exhausted, and liquid leakage of a water circulation system is effectively avoided.

In addition, as a supplementary effect, it should be understood by those skilled in the art that the present application can also achieve micro air discharge, specifically, when the air discharge valve is in a micro air discharge state, that is, when a small amount of air overflows from the water inlet pipe of the electronic water pump and enters the overflow chamber 114 through the overflow hole 322 of the base 30, because of the low density and small mass of the air, the air will gather around the floating body 510, so that the buoyancy received by the floating body 510 will be reduced, and at this time, the position of the floating mechanism 50 will also be reduced, and at this time, a gap will be formed between the floating body 510 and the valve core main body 410, and this part of air can be discharged to the atmosphere through the gap between the floating body guide rod 520 and the valve core guide rod 430, so as to discharge the air in the electronic water pump in time.

As a preferred embodiment of the present invention, the base 30 further includes a wind deflector assembly 60 disposed in the overflow groove 321, and a first liquid inlet hole 323 communicating with the seating groove 332 is formed at the bottom of the overflow groove 321; the wind deflector assembly 60 comprises a disc-shaped wind deflector 610 and a plurality of vertical partition plates 620 arranged around the wind deflector 610 at intervals, the wind deflector 610 is arranged below the bottom of the overflow groove 321 at intervals in parallel, and the vertical partition plates 620 are connected between the bottom of the overflow groove 321 and the wind deflector 610 to form a plurality of second liquid inlet holes 630 corresponding to the first liquid inlet holes 323. It should be noted by those skilled in the art that the arrangement of the wind shielding assembly 60 can prevent a large amount of gas from directly blowing up the floating mechanism 50 through the first liquid inlet 323 under a large amount of exhaust conditions, and on the other hand, after the gas is completely exhausted, the liquid can enter the flow chamber 114 through the flow hole 322 into the seating groove 332 and can also enter the seating groove 332 through the first liquid inlet 323, so that the floating mechanism 50 is quickly floated, and the response sensitivity of the exhaust valve is improved.

As a preferred embodiment, the overflow device further comprises a protection assembly 70 for preventing foreign matters from entering the overflow chamber 114, wherein the protection assembly 70 comprises a mesh pipe 710 arranged vertically and a cover plate 720 sealed at the top of the mesh pipe 710; the mesh pipe 710 is fixedly arranged at the top of the valve cover 20, the cover plate 720 is fixedly connected with the mesh pipe 710, the mesh pipe 710 comprises a top outlet and a bottom inlet which are oppositely arranged, and the first drainage hole 210 and the through hole are communicated with the bottom inlet of the mesh pipe 710. It should be noted that, by providing the protection assembly 70, by providing the mesh pipe 710 on the top of the valve cover 20, and by providing the cover plate 720 on the top of the mesh pipe 710, the embodiment of the present invention can prevent external foreign matters from entering into the overflowing chamber 114 and affecting the normal operation of the valve core mechanism 40 and the floating mechanism 50, thereby improving the service life and stability of the exhaust valve. It should be noted that the mesh tube 710 is a tubular object with a plurality of mesh holes on the tube wall. It will be appreciated that the first drain hole 210 and the through hole are both in communication with the bottom inlet of the mesh tube 710, ensuring that the fluid medium from the flow-through chamber 114 is drained to the external environment after passing through the mesh tube 710.

Further, the top of the cover plate 720 is convexly provided with a connecting ear plate 730, the exhaust valve further comprises a posture fixing support 80, the fixing support comprises a middle frame 810 fixedly connected with the connecting ear plate 730 and a top plate 820 fixedly arranged at the top of the middle frame 810, and the top plate 820 is provided with a plurality of first connecting holes 821 for bolts to penetrate through. It should be noted that, in this embodiment, the exhaust valve can be in a vertical working state by arranging the posture fixing bracket 80, so as to ensure the stability and reliability of the exhaust valve during working.

As an alternative embodiment, the valve cover 20 has a circular plate shape, the number of the first exhaust holes 210 is four, and four first exhaust holes 210 are uniformly arranged around the through hole. It can be understood that the number and arrangement of the first exhaust holes 210 can be set by those skilled in the art according to actual needs, and preferably, the exhaust performance of the exhaust valve can be further optimized by uniformly arranging a plurality of the first exhaust holes 210 around the through hole.

As an optional implementation manner, the surrounding barrier 331 is an annular surrounding barrier 331, the valve core main body 410 is cylindrical, the valve core main body 410 and the annular surrounding barrier 331 are arranged coaxially, and a gap liquid inlet distance is provided between the annular surrounding barrier 331 and the valve core main body 410. It should be noted that the shape of the enclosure 331 can be set as desired, including but not limited to the ring shape in this embodiment.

In a preferred embodiment, a guide tube 220 for guiding the valve core guide rod 430 to move vertically is protruded from a top of the valve cover 20, the guide tube 220 is coaxially disposed with the through hole, and an inner diameter of the guide tube 220 is larger than an outer diameter of the valve core guide rod 430. According to the embodiment of the application, the valve core guide rod 430 can be guided to be movably arranged along the vertical direction through the guide pipe 220, and clamping stagnation is prevented.

As another preferred embodiment, a receiving groove 411 matched with the floating body 510 is recessed upwards from the bottom of the valve core main body 410, the second drainage hole 440 is formed in the middle of the bottom of the receiving groove 411, an annular groove surrounding the second drainage hole 440 is further formed in the bottom of the receiving groove 411, a second sealing ring 420 is installed in the annular groove, and the linear diameter of the second sealing ring 420 is greater than the depth of the annular groove. By arranging the second sealing ring 420 between the bottom of the valve core main body 410 and the top of the floating body 510, when the exhaust valve is in a sealed state, the top of the floating body 510 is in sealed connection with the bottom of the valve core main body 410, so that the sealing performance between the floating body 510 and the valve core main body 410 is improved, and liquid is ensured not to be discharged.

The invention also provides an electronic water pump (not shown in the figure), which comprises a water pump water circulation system (not shown in the figure), wherein the water pump water circulation system comprises a water inlet pipe (not shown in the figure) and also comprises the exhaust valve for the water circulation system of the electronic water pump; wherein the water inlet pipe is fixedly connected with the bottom surface of the connecting flange section of the base 30 in a sealing manner. Through setting up discharge valve to with the inlet tube with the sealed fixed connection in bottom of discharge valve's base 30, can be in time initiative get rid of the gas in the electronic pump water circulating system in time through discharge valve, avoid the water pump idle running.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. An exhaust valve for a water circulation system of an electronic water pump is characterized by comprising a valve body, a valve cover, a base, a valve core mechanism and a floating mechanism; wherein the content of the first and second substances,

the valve body comprises a valve main body, a top connecting flange and a bottom connecting flange which are oppositely arranged at two ends of the valve main body, and the valve main body is provided with a vertically through overflowing channel; the valve cover is arranged at the top of the valve body and fixedly connected with the top surface of the top connecting flange in a sealing manner, the valve cover is provided with a first drainage hole communicated with the overflowing channel, and the middle part of the valve cover is provided with a through hole for the valve core mechanism to vertically penetrate through;

the base, the valve main body and the valve cover jointly surround to form an overflowing chamber for fluid media to flow, and the first exhaust hole is communicated with the overflowing chamber; the base comprises a bottom flange section, a middle overflowing section and a top placing section, wherein the bottom flange section, the middle overflowing section and the top placing section are arranged in the overflowing channel and are sequentially connected from bottom to top; the bottom flange section is fixedly connected with the bottom connecting flange in a sealing manner;

the middle overflowing section is columnar, the bottom of the middle overflowing section is upwards sunken with an overflowing groove, and the side wall of the overflowing groove is provided with a plurality of overflowing holes communicated with the overflowing chamber; the top placing section comprises an enclosure arranged around the top of the middle overflowing section, and the enclosure and the top of the middle overflowing section enclose to form a seating groove with an opening at the top and used for seating the valve core mechanism;

the valve core mechanism is arranged in the overflowing channel and comprises a valve core main body and a valve core guide rod which is arranged at the top of the valve core main body in an upward protruding mode, the valve core main body is arranged right above the setting groove, a liquid feeding distance is arranged between the valve core main body and the groove wall of the setting groove at intervals, and the valve core guide rod is hollow and movably arranged along the through hole; the bottom of the valve core main body is upwards provided with a second drainage hole communicated with the interior of the valve core guide rod;

the floating mechanism comprises a floating body for providing buoyancy for the valve core mechanism and a floating body guide rod protruding upwards from the top of the floating body, and the floating body guide rod is movably arranged in the valve core guide rod.

2. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein the base further comprises a wind shield assembly disposed in the overflow groove, and a first liquid inlet hole communicated with the seating groove is formed at the bottom of the overflow groove; wherein, the wind deflector subassembly encircles including being discoid deep bead and polylith the perpendicular baffle that the deep bead interval set up, the wind deflector parallel interval set up in the below of the tank bottom of overflow groove, perpendicular baffle is connected the tank bottom of overflow groove with between the deep bead to form a plurality ofly with the corresponding second feed liquor hole in first feed liquor hole.

3. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 2, further comprising a protection assembly for preventing foreign matters from entering the overflowing chamber, wherein the protection assembly comprises a mesh pipe vertically arranged and a cover plate plugged at the top of the mesh pipe; wherein, the mesh pipe is fixed to be located the top of valve gap, the apron with mesh pipe fixed connection, the mesh pipe is including the top export and the bottom import of relative setting, first drainage hole the through hole all with the mesh pipe the bottom import intercommunication.

4. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 3, wherein a connecting ear plate is convexly provided on the top of the cover plate, the exhaust valve further comprises a posture fixing support, the fixing support comprises a middle frame fixedly connected with the connecting ear plate and a top plate fixedly provided on the top of the middle frame, and a plurality of first connecting holes for bolts to penetrate through are provided on the top plate.

5. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein the valve cover is in a circular plate shape, the number of the first exhaust holes is four, and the four first exhaust holes are uniformly distributed around the through hole.

6. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein the surrounding barrier is an annular surrounding barrier, the valve core body is cylindrical, the valve core body and the annular surrounding barrier are arranged coaxially, and a spaced liquid inlet distance is formed between the annular surrounding barrier and the valve core body.

7. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein a guide pipe for guiding the valve core guide rod to move vertically is protruded from a top of the valve cover, the guide pipe is coaxially arranged with the through hole, and an inner diameter of the guide pipe is larger than an outer diameter of the valve core guide rod.

8. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein a first sealing ring is padded between the valve cover and the top connection flange, the top connection flange is provided with a plurality of second connection holes for bolt connection, the plurality of second connection holes are uniformly distributed around the through hole, the valve cover is provided with third connection holes which are distributed in one-to-one correspondence with the second connection holes, the valve cover is connected with the top connection flange in a sealing manner through the first sealing ring, and the valve cover is fixedly connected with the top connection flange through the second connection holes and the third connection holes by bolts.

9. The exhaust valve for the water circulation system of the electronic water pump as claimed in claim 1, wherein a receiving groove matched with the floating body is recessed upwards from the bottom of the valve core main body, the second drainage hole is formed in the middle of the bottom of the receiving groove, an annular groove surrounding the second drainage hole is further formed in the bottom of the receiving groove, a second sealing ring is installed in the annular groove, and the linear diameter of the second sealing ring is greater than the depth of the annular groove.

10. An electronic water pump, comprising a water pump body, wherein the water pump body comprises a water inlet pipe, and the electronic water pump is characterized by further comprising an exhaust valve for the water circulation system of the electronic water pump as claimed in any one of claims 1 to 9; wherein, the inlet tube with the base the bottom surface sealing fixed connection of flange section.

Images