CN211315195U

CN211315195U - Water heater and blowoff valve thereof

Info

Publication number: CN211315195U
Application number: CN201922100559.2U
Authority: CN
Inventors: 梁荣顺; 周教生
Original assignee: Guangdong Aorong Electric Appliance Co ltd
Current assignee: Guangdong Aorong Electric Appliance Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-21
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a water heater and a blowoff valve thereof, wherein the blowoff valve comprises a valve body, a valve core and a valve rod, the valve body is provided with a containing cavity, a water inlet and a water outlet which are communicated with the containing cavity; the valve core is arranged in the accommodating cavity and is provided with a water through hole; one end of the valve rod is connected with the valve core, the other end of the valve rod is provided with an outer matching part, the outer matching part is provided with at least two arc contact surfaces which are contacted with an external tool, the at least two arc contact surfaces extend along the axial direction of the valve rod, and the valve rod and the valve core are driven to rotate under the action of the external tool, so that the water inlet, the water passing hole and the water outlet are communicated to form a sewage discharge channel. The utility model provides a blowoff valve simple structure, occupation space is little, is used in it on the water heater, enables the blowdown and operates more portably.

Description

Water heater and blowoff valve thereof

Technical Field

The utility model relates to a technical field is made to the water heater, especially relates to a water heater and blowoff valve thereof.

Background

After the water heater product is used for a certain time, the water heater water tank needs to be drained, but the water heater drain valve in the prior art is complex in structure, large in occupied space and troublesome in operation, and the aesthetic feeling of the product appearance is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a blowoff valve for water heater, this blowoff valve can solve one of above-mentioned technical problem at least.

In order to realize the purpose, the technical scheme of the utility model is that:

a blowoff valve for a water heater, which comprises a valve body, a valve core and a valve rod,

the valve body is provided with an accommodating cavity, and a water inlet and a water outlet which are communicated with the accommodating cavity;

the valve core is arranged in the accommodating cavity and is provided with a water through hole;

one end of the valve rod is connected with the valve core, the other end of the valve rod comprises an outer matching portion, the cross section of the outer matching portion comprises a plurality of end-to-end curve sections, the curve sections extend along the axis of the valve rod to form a plurality of contact curved surfaces in contact with an external tool, and the valve rod and the valve core are driven to rotate under the action of the external tool, so that the water inlet, the water passing hole and the water outlet are communicated to form a sewage discharge channel.

Compared with the water heater blowoff valve of prior art, the utility model discloses a set up one on the valve rod have can with the contact curved surface's of outside instrument cooperation contact outer cooperation portion to make the user just can realize the switch of blowoff valve through outside instrument, simplified the blowoff valve structure, and reduce blowoff valve occupation space.

In some embodiments, the plurality of contact curved surfaces are equal in size and are uniformly arranged on the outer peripheral surface of the other end of the valve rod to form straight knurls.

In some embodiments, the other end of the valve stem further comprises a body portion on which the outer mating portion is disposed along the axis of the valve stem extending outwardly of the valve body, and a horizontal contact surface for contact with an external tool is formed at the intersection of the body portion and the outer mating portion.

Further, the vertical distance from the vertex of the contact curved surface to the center of the valve rod is smaller than or equal to the radius of the valve rod.

In some embodiments, the valve body has a protrusion protruding outward from the valve body in a radial direction of the valve body, and at least one rotation limiting groove cooperating with an external tool to limit the rotation amplitude of the valve stem is formed.

Furthermore, the bulge is arranged outwards along the radial direction of the valve body to form a rotary limiting groove; on the cross section of the convex part, an angle alpha is formed between the left limit and the right limit of the rotation limit groove, and the angle alpha satisfies the following conditions: alpha is more than or equal to 15 degrees and less than or equal to 180 degrees.

Preferably, the angle α satisfies: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees

Through setting up rotate the spacing groove, external tool is restricted the spacing inslot rotation drives the valve rod rotates in order to realize the opening and closing of blowoff valve, the simple operation.

In some embodiments, the protrusion protrudes outward from the valve body along a radial direction of the valve body to form two rotation limiting grooves of the valve rod, and the two rotation limiting grooves are radially symmetrical.

Further, on the cross section of the protruding part, an angle alpha is formed between the left limit position and the right limit position of each rotation limit groove, and the angle alpha satisfies the following conditions: alpha is more than or equal to 15 degrees and less than 180 degrees.

In some embodiments, the vertical distance from the vertex of the contact curved surface to the center of the valve stem is larger than the radius of the valve stem, and a horizontal contact surface for contacting with an external tool is formed on the end surface of the protrusion. Preferably, an end surface of the outer fitting portion is higher than an end surface of the projection portion in a radial direction of the valve body.

Another object of the present invention is to provide a water heater, which includes the blowoff valve for a water heater of any one of the above embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a block diagram of a blowdown valve for a water heater according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a waste valve for a water heater according to an embodiment of the present invention;

fig. 3 is a sectional view of a valve stem in embodiment 1 of the present invention;

fig. 4 is a cross-sectional view of a valve stem and a projection (having a rotation-restricting groove) according to embodiment 2 of the present invention;

fig. 5 is a sectional view of a valve stem and a projection (having two rotation limiting grooves) according to embodiment 2 of the present invention.

Fig. 6 is a partially enlarged view of a valve stem and a projection according to embodiment 3 of the present invention;

fig. 7 is a cross-sectional view of a valve stem and a projection according to embodiment 3 of the present invention;

FIG. 8 is a schematic view of an external tool of the present invention;

fig. 9 is a schematic view of the external tool installation of the present invention.

[ reference numerals ]

100 valve body 110 water inlet 120 water outlet

200 valve core 210 water through hole

300 valve rod 310 external fitting part 311 contact curved surface

312 horizontal contact surface 313 screw hole

400 the lug 410 rotates the left limit of the limit slot 411

412 right stop 420 nose face

500 special tool 510 fixing hole 520 sleeve

530 stop

Detailed Description

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 9.

Example 1

As shown in fig. 1-2, a blowoff valve for a water heater according to an embodiment of the present invention includes:

including the valve body 100, the valve cartridge 200, and the valve stem 300.

Wherein the valve body 100 has a receiving cavity, and a water inlet 110 and a water outlet 120 communicated with the receiving cavity;

the valve core 200 is arranged in the accommodating cavity and is provided with a water through hole 210;

one end of the valve rod 300 is connected with the valve core 200, the other end of the valve rod 300 comprises an outer matching part 310, the cross section of the outer matching part comprises a plurality of end-to-end curve sections, the curve sections extend along the axis of the valve rod to form a plurality of contact curved surfaces 311 contacted with an external tool, and under the action of the external tool, the valve rod 300 and the valve core 200 are driven to rotate, so that the water inlet 110, the water through hole 210 and the water outlet 120 are communicated to form a sewage discharge channel.

In a specific embodiment, as shown in fig. 3, the plurality of curved contact surfaces 311 have the same size and are uniformly arranged on the outer circumferential surface of the other end of the valve stem 300 to form straight knurls. It should be noted that the fingerprint knurl is only an example of the present embodiment, and is not a limitation to the technical solution of the present invention, for example, a plurality of contact curved surfaces of the embodiment of the present invention may also be formed in a gear shape on the outer peripheral surface of the other end of the valve rod.

The external fitting part 310 is fixedly connected to the valve rod 300, and the connection manner may be welding or other connection manners with the same effect. Preferably, the external fitting part 310 is integrally formed with the valve stem 300.

Example 2

The embodiment 2 is basically the same as the embodiment 1 in technical scheme, and the difference is mainly that:

the valve body is provided with a projection 400, the projection 400 is arranged to be protruded outwards from the valve body 100 along the radial direction of the valve body 100, and at least one rotation limiting groove 410 which is matched with an external tool to limit the rotation amplitude of the valve rod 300 is formed.

In some embodiments, as shown in fig. 4, the protrusion 400 protrudes outward from the valve body 100 in the radial direction of the valve body 100 to form a rotation-limiting groove 410. In the cross section of the protrusion 400, an angle α is formed between the left stopper 411 and the right stopper 412 of the rotation stopper groove 410, and the angle α satisfies: alpha is more than or equal to 15 degrees and less than or equal to 180 degrees. Preferably, the angle α satisfies: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees. When the rotation angle of the valve rod 300 is equal to 15 degrees, the water inlet 110, the water through hole 210 and the water outlet 120 are communicated, and the sewage discharge channel is opened; as the valve stem 300 continues to rotate to 90 °, the trapway becomes wider and reaches a maximum at 90 °; as the valve stem 300 continues to rotate to 180 deg., the trapway narrows and closes completely at 180 deg.. Preferably, when the angle α is equal to 90 °, the blow-down valve is closed when the valve stem 300 is located at the left limit 411, and is fully opened when the valve stem 300 is located at the right limit 412.

Through setting up rotate spacing groove 410, external instrument is restricted at spacing inslot 410 and rotates, drives valve rod 300 and rotates in order to realize the opening and closing of blowoff valve, the simple operation.

Further, as shown in fig. 5, the protrusion 400 protrudes outward from the valve body 100 along the radial direction of the valve body 100 to form two rotation limiting grooves 410 of the valve rod 300, and the two rotation limiting grooves 410 are radially symmetrical. In the cross section of the protrusion 400, an angle α is formed between the left stopper 411 and the right stopper 412 of each rotation stopper groove 410, and the angle α satisfies: alpha is more than or equal to 15 degrees and less than 180 degrees. When the angle is 180 degrees, the two rotary limiting grooves are both semicircular, form a complete circle and lose the limiting effect.

Likewise, preferred angles for angle α are: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees.

Through setting up two spacing grooves, can use different direction rotations according to actual installation condition the valve rod improves the practicality.

Example 3

Embodiment 3 is substantially the same as the technical solution of embodiment 1 or 2, and mainly differs from this embodiment in that on the basis of embodiment 1 or 2, the blowdown valve for a water heater of this embodiment further includes a horizontal contact surface contacting with an external tool, specifically:

as shown in fig. 1-5, in some embodiments, the other end of the valve stem 300 further includes a body portion, and the external fitting portion 310 is disposed on the body portion along the axis of the valve stem 300 and extends outward of the valve body, and a horizontal contact surface 312 for contacting an external tool is formed at the interface of the body portion and the external fitting portion 310.

Further, the vertical distance from the vertex of the curved contact surface 311 to the center of the stem is equal to or less than the radius of the stem 300.

Because the area of the end surface of the external fitting part 310 is smaller than that of the end surface 300 of the valve rod to form a horizontal contact surface 312, when an external tool is in contact fitting with the external fitting part, the horizontal contact surface forms a bearing surface of the external tool and is in contact with the external tool, and the operation is convenient.

In other embodiments, as shown in fig. 6 to 7, the vertical distance from the vertex of the curved contact surface 311 to the center of the valve stem is greater than the radius of the valve stem, and a horizontal contact surface (i.e., a protrusion end surface 420) for contacting an external tool is formed on the end surface of the protrusion 400. Wherein an end surface of the outer fitting portion 310 is higher than the projection end surface 420 in a radial direction of the valve body.

Wherein, the external tool according to any of embodiments 1-3 can be a special tool 500 having a fixing hole capable of being matched with the external matching part 310. For example, as shown in fig. 8-9, the fixing hole 510 is located near the middle of the special tool 500, and both ends of the special tool 500 are respectively provided with a sleeve 520 and a stopper 530.

In the actual use process, the special tool 500 is matched with the outer matching part 310, a cylindrical rod-shaped object such as a screwdriver is inserted into the sleeve 520, and the screwdriver is rotated to drive the special tool 500 to rotate, so as to drive the valve rod to rotate, and control the opening and closing of the blow-down valve. The stopper 530 is restricted in the rotation restricting groove 410, thereby restricting the rotation angle of the valve rod 300 and facilitating the operation.

Preferably, a threaded hole 313 axially extending from the other end of the valve rod 300 toward the valve body is further formed in the valve rod 300. After the screw is threaded through the special tool 500, the screw is screwed on the end surface of the valve rod 300, so that the special tool 500 is fixedly connected with the valve rod 300.

The above description is only an exemplary illustration of the specific tool and not a limitation of the external tool structure.

Furthermore, the utility model discloses a still provide a water heater, it includes the blowoff valve for water heater of any above-mentioned embodiment.

In the description of the present invention, it is to be understood that the terms "radial", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like refer to the orientation or positional relationship as shown in the drawings, and are used for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. A blowoff valve for a water heater is characterized by comprising a valve body, a valve core and a valve rod, wherein the valve body is provided with an accommodating cavity, a water inlet and a water outlet which are communicated with the accommodating cavity;

2. A waste valve for a water heater as claimed in claim 1, wherein the plurality of contact curved surfaces are equally sized and uniformly arranged on the outer peripheral surface of the other end of the valve stem to form a straight knurl.

3. A waste valve for a water heater as claimed in claim 1, wherein:

the other end of the valve rod further comprises a body part, the outer matching part extends outwards of the valve body along the axis of the valve rod and is arranged on the body part, and a horizontal contact surface which is in contact with an external tool is formed at the junction of the body part and the outer matching part.

4. A waste valve for a water heater as claimed in claim 3, wherein:

the vertical distance from the vertex of the contact curved surface to the center of the valve rod is smaller than or equal to the radius of the valve rod.

5. A waste valve for a water heater as claimed in claim 1, wherein the valve body has a projection projecting outwardly therefrom in a radial direction of the valve body to form at least one rotation limiting groove for engaging with an external tool to limit the rotational amplitude of the valve stem.

6. A waste valve for a water heater as claimed in claim 5, wherein the projection forms a rotation limiting groove; on the cross section of the convex part, an angle alpha is formed between the left limit and the right limit of the rotation limit groove, and the angle alpha satisfies the following conditions: alpha is more than or equal to 15 degrees and less than or equal to 180 degrees.

7. A waste valve for a water heater as claimed in claim 5, wherein the projection forms two rotational limit grooves of the valve stem, and the two rotational limit grooves are radially symmetrical.

8. A waste valve for a water heater according to claim 7, wherein, in the cross section of the protrusion, an angle α is formed between the left limit and the right limit of each rotation limit groove, and the angle α satisfies: alpha is more than or equal to 15 degrees and less than 180 degrees.

9. A waste valve for a water heater as claimed in claim 5, wherein the vertical distance from the apex of the curved contact surface to the center of the valve stem is greater than the radius of the valve stem, and a horizontal contact surface with an external tool is formed on the end surface of the projection.

10. A water heater comprising a waste valve for a water heater as claimed in any one of claims 1 to 9.