CN210266048U

CN210266048U - Negative pressure valve and water supply system with same

Info

Publication number: CN210266048U
Application number: CN201920884803.6U
Authority: CN
Inventors: 吴瑞昌; 佘群
Original assignee: Guangdong Jibao Electrical Appliance Technology Co ltd
Current assignee: Guangdong Jibao Electrical Appliance Technology Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-04-07
Anticipated expiration: 2029-06-12

Abstract

The utility model relates to a negative pressure valve, which comprises a valve body provided with a water inlet, a water outlet and a valve cavity, wherein the valve cavity is vertically arranged in the valve body, the side part of the valve cavity is provided with a water inlet communicated with the water inlet, and the head end is provided with a water outlet communicated with the water outlet; the valve cavity is internally provided with a valve rod capable of sliding up and down to control the opening degree of the water outlet hole, an elastic resetting device is arranged between the tail end of the valve rod and the tail end of the valve cavity, the head end of the valve rod is provided with a flexible balance ring, and the inner side surface of the flexible balance ring is hermetically arranged at the head end of the valve cavity and communicated with the outside of the valve body. The utility model discloses still relate to a water supply system, include water pump, heating member and the play water mechanism that connects gradually through the water route, its characterized in that, the end of intaking of water pump is equipped with as aforementioned negative pressure valve, and the end of intaking of water pump is connected through the delivery port of water route with the negative pressure valve, and the water inlet of negative pressure valve passes through the water route and is connected with the water source.

Description

Negative pressure valve and water supply system with same

Technical Field

The utility model relates to a water supply system field specifically is a negative pressure valve and have its water supply system.

Background

Products such as water dispensers, coffee makers and the like are provided with water supply systems. The water supply system in the prior art is generally divided into a non-pressure water source type water supply system (such as water tank water supply) and a pressure water source type water supply system (such as tap water supply).

When a water supply system of a non-pressure water source type is adopted, a water pump is arranged on a water path of the water supply system, and the control of variable water supply flow is realized by controlling the power of the water pump.

When a water supply system of a pressurized water source type is adopted, as shown in fig. 1, a pressure reducing valve 100, an electromagnetic valve 101 and a flow regulating valve 102 (as the instant water dispenser is adopted, a heating body 103 and a water outlet mechanism 104 are also arranged on a water path) are required to be arranged on a water path of the water supply system.

In the prior art, a water supply system adopting a non-pressure water source and a water supply system adopting a pressure water source cannot coexist in the same water supply system, the universality is poor, and the production cost of an enterprise is higher.

In addition, in the prior art, when a pressure water source type water supply system is adopted to work, when the pressure of a water source changes, the pressure of a water path entering a pressure reducing valve after pressure reduction can be changed, and the control of the water supply flow is inaccurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a negative pressure valve, it can be used for water supply system in, adapts to the use that has pressure water source class water supply system or no pressure water source class water supply system.

The purpose of the utility model is realized like this:

a negative pressure valve comprises a valve body provided with a water inlet, a water outlet and a valve cavity, wherein the valve cavity is vertically arranged in the valve body, the side part of the valve cavity is provided with a water inlet hole communicated with the water inlet, and the head end of the valve cavity is provided with a water outlet hole communicated with the water outlet; a valve rod capable of sliding up and down to control the opening degree of the water outlet hole is arranged in the valve cavity, an elastic resetting device is arranged between the tail end of the valve rod and the tail end of the valve cavity, a flexible balance ring is arranged at the head end of the valve rod, the inner side surface of the flexible balance ring is arranged at the head end of the valve cavity in a sealing mode, and the outer side surface of the flexible balance ring is communicated with the; when the water outlet has no water inlet negative pressure, the elastic resetting device resets the valve rod to control the water outlet hole to be closed, when the water outlet has water inlet negative pressure, the same negative pressure is generated in the valve cavity, and the negative pressure enables the valve rod to compress the elastic resetting device to control the water outlet hole to be opened.

A gap is reserved between the valve cavity and the valve rod, a sealing groove is formed in the side portion of the valve cavity and is respectively formed in the upper side and the lower side of the water inlet hole, a sealing ring is arranged in the sealing groove and is abutted against the middle portion of the valve rod to seal the valve cavity into an upper portion, a middle portion and a lower portion, the valve cavity in the upper portion is communicated with the water outlet, the valve cavity in the middle portion is communicated with the water inlet, the valve cavity in the lower portion contains an elastic resetting device, and a first water flow groove is formed; when the water outlet has no water inlet negative pressure, the first water flow groove is communicated with the valve cavity at the upper part, and when the water outlet has water inlet negative pressure, the first water flow groove is communicated with the valve cavity at the upper part and the valve cavity at the lower part.

And the middle part of the valve rod is provided with a second flow groove for increasing the section of a gap formed between the valve rod and the valve cavity.

The opening cross-section size of the seal groove of the upper and lower both sides of inlet opening is the same, and the cross-section size of sealing washer is the same, and the area of contact of sealing washer and valve rod is the same.

The two ends of the valve cavity are respectively communicated with the two ends of the valve body, the head end of the valve cavity is sealed by the flexible balance ring through the pressing cover, the tail end of the valve body is provided with the bottom cover, the tail end of the valve cavity is sealed by the bottom cover, and the middle cover is arranged at the position, corresponding to the sealing groove on the lower side of the water inlet hole, of the valve cavity.

And a balance cavity communicated with the outside of the valve body and the outer side surface of the flexible balance ring is formed in the gland.

The elastic reset device is a first spring.

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a negative water supply system, it can adapt to the use that has pressure water source class water supply system or no pressure water source class water supply system.

The utility model provides a water supply system, includes water pump, heating member and the play water mechanism that connects gradually through the water route, its characterized in that, the end of intaking of water pump is equipped with as aforementioned negative pressure valve, and the end of intaking of water pump is connected with the delivery port of negative pressure valve through the water route, and the water inlet of negative pressure valve passes through the water route and is connected with the water source.

The water inlet of the negative pressure valve is connected with a water source switching valve through a water path, the water source switching valve comprises a three-way main body, a switching cavity is arranged in the main body, a first water inlet channel and a second water inlet channel are arranged on two opposite sides of the side wall of the switching cavity, a first water inlet end, a second water inlet end and a water outlet end are respectively arranged at three ends of the main body, the axial direction of the second water inlet end is the same as that of the water outlet end, the first water inlet end is vertical to the axial direction of the second water inlet end and the water outlet end, the first water inlet end is communicated with the first water inlet channel, the second water inlet end is communicated with the second water inlet channel, the water outlet end is communicated with the switching cavity, a piston is movably arranged in the switching cavity, sealing rings abutted against the side wall of the switching cavity are arranged at two ends of the piston, and a; the piston resets under the action of the elastic resetting force of the second spring, in the state, the piston opens the first water inlet channel and closes the second water inlet channel, after the pipeline is inserted into the second water inlet channel, the pipeline enables the piston to move and compress the second spring, and in the state, the piston closes the first water inlet channel and opens the second water inlet channel.

And the first water inlet end and the second water inlet end are respectively provided with a pipeline quick-connection mechanism.

The utility model has the advantages as follows:

when the negative pressure valve is used, after negative pressure is generated at the water outlet through components such as a water pump and the like, the water outlet hole is opened by the valve rod inside the negative pressure valve under the action of negative pressure to realize water supply, the opening degree of the negative pressure valve is controlled by the negative pressure and is irrelevant to whether a water source has pressure or not, namely the negative pressure valve can be suitable for a pressure water source type water supply system or a non-pressure water source type water supply system, a pressure reducing device is not required to be arranged in the water supply system, so that the water supply system is simpler, the volume is smaller, the universality is strong, and the.

When the negative pressure valve is applied to a water supply system, only a conventional component capable of generating negative pressure, such as a water pump, needs to be arranged on a water path, so that the structure of the water supply system is simpler, the negative pressure valve can be suitable for various water supply systems with pressure sources or water supply systems without pressure sources, the components are smaller, and the volume is smaller.

After the negative pressure valve is adopted by the water supply system, the negative pressure valve can be suitable for a pressure water source type water supply system or a non-pressure water source type water supply system, so that the water supply system can become the water supply system with a pressure water source and a non-pressure water source at the same time by arranging the water source switching valve at the water source input end, and the application range of the water supply system is enlarged.

The utility model is suitable for various water supply systems, such as a water dispenser, a coffee machine and the like, and has wide application.

Drawings

Fig. 1 is a schematic diagram of a water supply system using a pressurized water source in the prior art.

Fig. 2 is a schematic structural view of a negative pressure valve according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a negative pressure valve applied to a water supply system according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a negative pressure valve applied to another water supply system according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram 1 of a water source switching valve according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a water source switching valve according to an embodiment of the present invention 2.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

First embodiment

Referring to fig. 2, the negative pressure valve comprises a valve body 1 provided with a water inlet 11, a water outlet 12 and a valve cavity 13, wherein the valve cavity 13 is vertically arranged in the valve body 1, a water inlet 131 communicated with the water inlet 11 is arranged at the side part of the valve cavity 13, and a water outlet 121 communicated with the water outlet 12 is arranged at the head end of the valve cavity 13; a valve rod 15 capable of sliding up and down to control the opening of the water outlet hole 121 is arranged in the valve cavity 13, an elastic resetting device is arranged between the tail end of the valve rod 15 and the tail end of the valve cavity 13, a flexible balance ring 16 is arranged at the head end of the valve rod 15, the inner side surface of the flexible balance ring 16 is hermetically arranged at the head end of the valve cavity 13, and the outer side surface of the flexible balance ring is communicated with the outside of the valve body 1; when no water inlet negative pressure exists at the water outlet 12, the pressures at the inner side and the outer side of the flexible balance ring 16 need to be restored to balance, the elastic reset device is driven to enable the valve rod 15 to reset upwards, the water outlet hole 121 is controlled to be closed, and therefore a water path is cut off, and water source continuous conveying is stopped; when water inlet negative pressure exists at the water outlet 12, the same negative pressure is generated in the valve cavity 13, the valve rod 15 compresses the elastic resetting device under the combined action of atmospheric pressure and the negative pressure, and the valve rod 14 slides downwards to control the water outlet hole 121 to be opened, so that a water path is communicated, and water sources are conveyed continuously. Whether or not the water source can be delivered on a waterway depends on whether or not there is a negative pressure at the water outlet 12.

More specifically, a gap is formed between the valve cavity 13 and the valve rod 15, so that the assembly of the valve cavity 13 and the valve rod 15 is facilitated, the valve rod 15 can slide up and down conveniently, a sealing groove 132 is arranged at the side part of the valve cavity 13, the sealing groove 132 is respectively arranged at the upper side and the lower side of the water inlet 131, a sealing ring 133 is arranged in the sealing groove 132, the sealing ring 133 and the middle part of the valve rod 15 are abutted and sealed and separate the valve cavity 13 into an upper part, a middle part and a lower part, the valve cavity 13 at the upper part is communicated with the water outlet 12, the valve cavity 13 at the middle part is communicated with the water inlet 131, the; when the water outlet 12 has no negative pressure of water inlet, the first water flow groove 151 is communicated with the upper valve cavity 13, so that the water path is cut off, and the water source is stopped to be conveyed continuously, and when the water outlet 12 has negative pressure of water inlet, the first water flow groove 151 is communicated with the upper valve cavity 13 and the lower valve cavity 13, so that the water path is communicated, and the water source is conveyed continuously. The middle part of the valve rod 15 is provided with a second runner 152 for increasing the section of the gap formed between the valve rod and the valve cavity 13, so as to increase the flow area of the valve cavity 13 in which water can flow in the middle part.

Further, the opening cross sections of the sealing grooves 132 on the upper side and the lower side of the water inlet 131 are the same, the cross sections of the sealing rings 133 are the same, and the contact areas of the sealing rings 133 and the valve rod 15 are the same, at this time, the sealing forces of the sealing rings 133 on the upper side and the lower side to the valve rod 15 are the same, so that the valve rod 15 is ensured to have the same acting force of a pressure water source located in the middle valve cavity 13 to the periphery of the valve rod 15 in a reset state, and the phenomenon that the valve rod 15 is accidentally opened due to the fact that the acting force of the existing pressure water source to the periphery of.

Further, the two ends of the valve cavity 13 penetrate through the two ends of the valve body 1 respectively, the head end of the valve cavity 13 is sealed by the flexible balance ring 16 through the pressing cover 141, the tail end of the valve body 1 is provided with the bottom cover 17, the tail end of the valve cavity 13 is sealed by the bottom cover 17, the valve body 1, the valve rod 15, the flexible balance ring 16 and the lower side sealing ring 133 are convenient to assemble and seal through the technical scheme, the middle cover 18 is arranged at the position, corresponding to the sealing groove 133 on the lower side of the water inlet hole 131, of the valve cavity 13, and the upper side sealing.

Further, a balance cavity 14 communicating the outside of the valve body 1 and the outer side surface of the flexible balance ring 16 is formed in the gland 141, and the balance cavity 14 prevents the flexible balance ring 16 from being directly exposed and pressed by other parts.

Further, the elastic return means is a first spring 19.

Referring to fig. 3, this water supply system includes water pump 2, heating member 3 and play water mechanism 4, heating device and the mechanism of going out water that connects gradually through the water route, water pump 2's the end of intaking is equipped with like aforementioned negative pressure valve, and water pump 2's the end of intaking is connected with negative pressure valve's delivery port 12 through the water route, and negative pressure valve's water inlet 11 is connected with the water source through the water route. When the negative pressure valve is applied to a water supply system, only a conventional part capable of generating negative pressure needs to be arranged on a water path, such as the water pump 2, so that the structure of the water supply system is simpler, the negative pressure valve can be suitable for various water supply systems with pressure sources or water supply systems without pressure sources, parts formed by the whole water supply system are smaller, and the volume of the water supply system is smaller.

Second embodiment

Referring to fig. 4 to 6, the main difference of the present negative pressure valve from the first embodiment is that a water inlet 11 of the negative pressure valve is connected to a water source switching valve through a water path, and after the water supply system adopts the present negative pressure valve, the present negative pressure valve can be applied to a pressurized water source type water supply system or a non-pressurized water source type water supply system, so that the switching of the pressurized water source or the non-pressurized water source is realized by additionally arranging the water source switching valve at the water source input end, that is, the present negative pressure valve can realize that the water supply system becomes a water supply system with both pressurized water source and non-pressurized water source supply, and.

More specifically, the water source switching valve comprises a three-way main body 5, a switching cavity 50 is arranged in the main body 5, a first water inlet channel 56 and a second water inlet channel 57 are arranged on two opposite sides of the side wall of the switching cavity 50, a first water inlet end 51, a second water inlet end 52 and a water outlet end 53 are respectively arranged at three ends of the main body 5, the axial directions of the second water inlet end 52 and the water outlet end 53 are the same, the first water inlet end 51 is vertical to the axial directions of the second water inlet end 52 and the water outlet end 53, the first water inlet end 51 is communicated with the first water inlet channel 56, the second water inlet end 52 is communicated with the second water inlet channel 57, the water outlet end 53 is communicated with the switching cavity 50, a piston 54 is movably arranged in the switching cavity 50, sealing rings 58 which are abutted and sealed with the side wall of the switching cavity 50 are arranged at two ends of the piston 54, and a second spring 55 is arranged between the end of the; the piston 54 is reset under the action of the elastic reset force of the second spring 55, in this state, the piston 54 opens the first water inlet channel 56 and closes the second water inlet channel 57, as shown in fig. 5, so as to realize the connection of the first water source, and the first water inlet end 51 is suitable for the connection of a non-pressure water source, such as a water tank; after the second water inlet channel 57 is inserted into the pipeline, the pipeline makes the piston 54 move and compress the second spring 55, in this state, the piston 54 closes the first water inlet channel 56 and opens the second water inlet channel 57, as shown in fig. 6, the second water inlet end 52 is suitable for the connection of a non-pressure water source or a pressure water source, such as a water tank or tap water; after the second water inlet end 52 is inserted into the pipeline, the supply of the other water source is automatically switched, so that the water supply system can be changed into a water supply system with a pressure water source and a non-pressure water source simultaneously, and the application range of the water supply system is enlarged.

In addition, the first water inlet end 51 and the second water inlet end 52 are respectively provided with a pipeline quick-connection mechanism, which is convenient for quick insertion and sealing of pipelines, and can be understood by those skilled in the art.

Other parts not described above, like the first embodiment, are not repeated.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A negative pressure valve comprises a valve body (1) provided with a water inlet (11), a water outlet (12) and a valve cavity (13), and is characterized in that the valve cavity (13) is vertically arranged in the valve body (1), the side part of the valve cavity (13) is provided with a water inlet hole (131) communicated with the water inlet (11), and the head end of the valve cavity is provided with a water outlet hole (121) communicated with the water outlet (12); a valve rod (15) capable of sliding up and down to control the opening of the water outlet hole (121) is arranged in the valve cavity (13), an elastic resetting device is arranged between the tail end of the valve rod (15) and the tail end of the valve cavity (13), a flexible balance ring (16) is arranged at the head end of the valve rod, the inner side surface of the flexible balance ring (16) is hermetically arranged at the head end of the valve cavity (13), and the outer side surface of the flexible balance ring is communicated with the outside of the valve body (1); when no water inlet negative pressure exists in the water outlet (12), the elastic reset device enables the valve rod (15) to reset to control the water outlet hole (121) to be closed, when the water inlet negative pressure exists in the water outlet (12), the same negative pressure is generated in the valve cavity (13), and the negative pressure enables the valve rod (15) to compress the elastic reset device to control the water outlet hole (121) to be opened.

2. The negative pressure valve of claim 1, wherein: a gap is reserved between the valve cavity (13) and the valve rod (15), a sealing groove (132) is arranged on the lateral part of the valve cavity (13), the sealing groove (132) is respectively arranged on the upper side and the lower side of the water inlet hole (131), a sealing ring (133) is arranged in the sealing groove (132), the sealing ring (133) is abutted against and sealed with the middle part of the valve rod (15), the valve cavity (13) is divided into an upper part, a middle part and a lower part, the valve cavity (13) on the upper part is communicated with the water outlet (12), the valve cavity (13) in the middle part is communicated with the water inlet hole (131), the valve cavity (13) on the lower part contains an elastic resetting device, and a first water flow groove (151; when the water outlet (12) has no water inlet negative pressure, the first water flow groove (151) is communicated with the valve cavity (13) at the upper part, and when the water outlet (12) has water inlet negative pressure, the first water flow groove (151) is communicated with the valve cavity (13) at the upper part and the lower part.

3. The negative pressure valve of claim 2, wherein: and a second runner (152) for increasing the section of a gap formed between the valve rod (15) and the valve cavity (13) is arranged in the middle of the valve rod.

4. The negative pressure valve of claim 2, wherein: the opening cross sections of the sealing grooves (132) on the upper side and the lower side of the water inlet hole (131) are the same, the cross sections of the sealing rings (133) are the same, and the contact areas of the sealing rings (133) and the valve rod (15) are the same.

5. The negative pressure valve of claim 2, wherein: the valve chamber (13) both ends link up the both ends of valve body (1) respectively, flexible balance circle (16) are sealed the head end of valve chamber (13) through gland (141), and the tail end of valve body (1) is equipped with bottom (17), and bottom (17) are sealed the tail end of valve chamber (13), and the position that valve chamber (13) correspond seal groove (132) that are located inlet opening (131) downside is equipped with well lid (18).

6. The negative pressure valve of claim 5, wherein: and a balance cavity (14) communicated with the outside of the valve body (1) and the outer side surface of the flexible balance ring (16) is formed in the gland (141).

7. The negative pressure valve of claim 1, wherein: the elastic reset device is a first spring (19).

8. A water supply system comprises a water pump (2), a heating body (3) and a water outlet mechanism (4) which are sequentially connected through a water path, and is characterized in that a negative pressure valve according to any one of claims 1 to 7 is arranged at the water inlet end of the water pump (2), the water inlet end of the water pump (2) is connected with a water outlet (12) of the negative pressure valve through the water path, and a water inlet (11) of the negative pressure valve is connected with a water source through the water path.

9. The water supply system according to claim 8, wherein: the water inlet (11) of the negative pressure valve is connected with a water source switching valve through a water path, the water source switching valve comprises a three-way main body (5), a switching cavity (50) is arranged in the main body (5), a first water inlet channel (56) and a second water inlet channel (57) are arranged on two opposite sides of the side wall of the switching cavity (50), a first water inlet end (51), a second water inlet end (52) and a water outlet end (53) are respectively arranged at three ends of the main body (5), the axial directions of the second water inlet end (52) and the water outlet end (53) are the same, the first water inlet end (51) is vertical to the axial directions of the second water inlet end (52) and the water outlet end (53), the first water inlet end (51) is communicated with the first water inlet channel (56), the second water inlet end (52) is communicated with the second water inlet channel (57), the water outlet end (53) is communicated with the switching cavity (50), a piston (54) is movably arranged in the switching cavity (50, sealing rings (58) which are sealed against the side wall of the switching cavity (50) are arranged at two ends of the piston (54), and a second spring (55) is arranged between the end part of the piston (54) close to the water outlet end (53) and the switching cavity (50); the piston (54) is reset under the action of elastic reset force of the second spring (55), in the state, the piston (54) opens the first water inlet channel (56) and closes the second water inlet channel (57), after the pipeline is inserted into the second water inlet channel (57), the pipeline enables the piston (54) to move and compress the second spring (55), and in the state, the piston (54) closes the first water inlet channel (56) and opens the second water inlet channel (57).

10. The water supply system according to claim 9, wherein: and the first water inlet end (51) and the second water inlet end (52) are respectively provided with a pipeline quick-connecting mechanism.