CN211779088U - Water heater and blowoff valve thereof - Google Patents
Water heater and blowoff valve thereof Download PDFInfo
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- CN211779088U CN211779088U CN201922100557.3U CN201922100557U CN211779088U CN 211779088 U CN211779088 U CN 211779088U CN 201922100557 U CN201922100557 U CN 201922100557U CN 211779088 U CN211779088 U CN 211779088U
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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 end face of the other end of the valve rod is provided with at least two grooves or bulges which are in fit contact with an external tool, so that an external fit part is formed at the other end of the valve rod and is used for being matched with the 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. 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
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 end face of the other end of the valve rod is provided with at least two grooves or bulges which are in fit contact with an external tool, so that an external fit part is formed at the other end of the valve rod and is used for being matched with the 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.
Compare with prior art's water heater blowoff valve, the utility model discloses an at least two recesses or the arch of contacting with the cooperation of external instrument are seted up to the terminal surface at the valve rod other end to make the user just can realize the switch of blowoff valve through external instrument, simplified the blowoff valve structure, and reduce blowoff valve occupation space.
In some embodiments, the at least two grooves or projections are symmetrically disposed about the center of the valve stem.
Optionally, the end surface of the other end of the valve rod is provided with two grooves or two protrusions.
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.
Preferably, the angle α satisfies: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees.
Another object of the present invention is to provide a water heater, which includes any one of the above blowoff valves for water heaters.
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 partially enlarged view of a valve stem and a projection according to embodiment 2 of the present invention;
fig. 5 is a cross-sectional view of a valve stem and a projection (having a rotation-restricting groove) according to embodiment 3 of the present invention;
fig. 6 is a cross-sectional view of a valve stem and a projection (having two rotation-restricting grooves) according to embodiment 3 of the present invention;
FIG. 7 is a schematic view of a first external tool;
FIG. 8 is a schematic view of a second external tool;
fig. 9 is a schematic view of the installation of the drain valve and external tool for a water heater of the present invention.
[ reference numerals ]
100 valve body 110 water inlet 120 water outlet
200 valve core 210 water through hole
300 valve stem 310 external mating portion 311 recess
312 convex 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 matching protrusion 520 sleeve
530 stop 540 fixing hole
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, and the end surface of the other end of the valve rod 300 is provided with at least two grooves 311 or protrusions 312 which are in fit contact with an external tool, so that an external fitting part 310 is formed at the other end of the valve rod and is used for being matched with the 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, the water passing hole and the water outlet are communicated to form a sewage discharge channel.
Compare with prior art's water heater blowoff valve, the utility model discloses an at least two recesses or the arch of contacting with the cooperation of external instrument are seted up to the terminal surface at the valve rod other end to make the user just can realize the switch of blowoff valve through external instrument, simplified the blowoff valve structure, and reduce blowoff valve occupation space.
In one embodiment, as shown in fig. 3, the end surface of the other end of the valve rod 300 is provided with two grooves 311. Alternatively, the recess 311 on the outer fitting part 310 may be a threaded hole.
Example 2
The embodiment 2 is basically the same as the embodiment 1 in technical scheme, and the difference is mainly that:
the end surface of the other end of the valve rod 300 is provided with at least two protrusions 312.
Specifically, as shown in fig. 4, the end surface of the other end of the valve rod 300 is provided with two protrusions 312, which form an external engagement portion capable of engaging with an external tool.
Example 3
Embodiment 3 in addition to embodiment 1 or embodiment 2, a protrusion 400 is added to the valve body 100.
The protrusion 400 protrudes outward from the valve body 100 along the radial direction of the valve body 100 to form at least one rotation-limiting groove 410 of the valve rod 300.
In some embodiments, as shown in fig. 5, 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. 6, 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.
Wherein, as shown in fig. 7, the external tool may be a special tool having at least two engaging protrusions and capable of engaging with at least two recesses 311 of the external engaging portion 310. The fitting protrusion 540 is located near the middle of the special fitting tool, and both ends of the special fitting tool are respectively provided with a sleeve 520 and a stopper 530. 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 a screw or a bolt is threaded through the special tool 500, the special tool 500 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.
As shown in fig. 8, the external tool may be a special tool having at least two fixing holes 510 and capable of being engaged with at least two recesses 311 or at least two protrusions 312 of the external engaging portion 310. The fixing hole 510 is located near the middle of the special tool, and both ends of the special tool are respectively provided with a sleeve 520 and a stop 530.
The special tool can be fixed to the valve stem when the at least two fixing holes 510 of the external tool are engaged with the at least two protrusions 312 of the external engagement portion 310. 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 a screw or a bolt is threaded through the special tool 500, the special tool 500 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.
When the at least two fixing holes 510 on the external tool are matched with the at least two grooves 311 on the external matching part 310, the grooves 311 on the external matching part 310 are threaded holes, and the special matching tool can be fixed on the valve rod through screws or bolts, as shown in fig. 9.
In the actual use process, after the special tool is matched with the external matching part, 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 to rotate, so as to drive the valve rod to rotate and control the opening and closing of the blow-down valve. Preferably, when the waste valve of this embodiment has the rotation-limiting groove, the stopper 530 is limited in the rotation-limiting groove 410, so as to limit the rotation angle of the valve rod 300, thereby facilitating the operation.
Furthermore, the utility model discloses a still provide a water heater, it includes the water heater blowoff valve 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 (10)
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;
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 end face of the other end of the valve rod is provided with at least two grooves or bulges which are in fit contact with an external tool, so that an external fit part is formed at the other end of the valve rod and is used for being matched with the 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.
2. A waste valve for a water heater as claimed in claim 1, wherein the at least two recesses or projections are arranged centrally symmetrically about the valve stem.
3. A waste valve for a water heater as claimed in claim 2, wherein:
the end face of the other end of the valve rod is provided with two grooves or two bulges.
4. 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.
5. A waste valve for a water heater as claimed in claim 4, wherein the projection forms a rotational limit groove.
6. A waste valve for a water heater according to claim 5, wherein an angle α is formed between the left limit to the right limit of the rotation limit groove on the cross section of the projection, and the angle α satisfies: 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 4, 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 according to claim 8, wherein said angle α satisfies: alpha is more than or equal to 45 degrees and less than or equal to 90 degrees.
10. A water heater comprising a waste valve for a water heater as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100557.3U CN211779088U (en) | 2019-11-27 | 2019-11-27 | Water heater and blowoff valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100557.3U CN211779088U (en) | 2019-11-27 | 2019-11-27 | Water heater and blowoff valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211779088U true CN211779088U (en) | 2020-10-27 |
Family
ID=72961868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922100557.3U Active CN211779088U (en) | 2019-11-27 | 2019-11-27 | Water heater and blowoff valve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211779088U (en) |
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2019
- 2019-11-27 CN CN201922100557.3U patent/CN211779088U/en active Active
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